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annotate src/share/vm/memory/metaspace.cpp @ 13068:11b116661830

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Merge
author mgerdin
date Mon, 11 Nov 2013 16:20:48 +0100
parents 610be0309a79 c8fc12209830
children fa76dce60db7 ce86c36b8921
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1 /*
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2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24 #include "precompiled.hpp"
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25 #include "gc_interface/collectedHeap.hpp"
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26 #include "memory/allocation.hpp"
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27 #include "memory/binaryTreeDictionary.hpp"
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28 #include "memory/freeList.hpp"
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29 #include "memory/collectorPolicy.hpp"
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30 #include "memory/filemap.hpp"
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31 #include "memory/freeList.hpp"
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32 #include "memory/gcLocker.hpp"
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33 #include "memory/metachunk.hpp"
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34 #include "memory/metaspace.hpp"
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35 #include "memory/metaspaceShared.hpp"
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36 #include "memory/resourceArea.hpp"
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37 #include "memory/universe.hpp"
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38 #include "runtime/atomic.inline.hpp"
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39 #include "runtime/globals.hpp"
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40 #include "runtime/init.hpp"
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41 #include "runtime/java.hpp"
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42 #include "runtime/mutex.hpp"
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43 #include "runtime/orderAccess.hpp"
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44 #include "services/memTracker.hpp"
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45 #include "services/memoryService.hpp"
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46 #include "utilities/copy.hpp"
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47 #include "utilities/debug.hpp"
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48
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49 typedef BinaryTreeDictionary<Metablock, FreeList> BlockTreeDictionary;
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50 typedef BinaryTreeDictionary<Metachunk, FreeList> ChunkTreeDictionary;
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51
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52 // Set this constant to enable slow integrity checking of the free chunk lists
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53 const bool metaspace_slow_verify = false;
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54
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55 size_t const allocation_from_dictionary_limit = 4 * K;
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56
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57 MetaWord* last_allocated = 0;
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58
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59 size_t Metaspace::_compressed_class_space_size;
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60
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61 // Used in declarations in SpaceManager and ChunkManager
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62 enum ChunkIndex {
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63 ZeroIndex = 0,
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64 SpecializedIndex = ZeroIndex,
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65 SmallIndex = SpecializedIndex + 1,
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66 MediumIndex = SmallIndex + 1,
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67 HumongousIndex = MediumIndex + 1,
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68 NumberOfFreeLists = 3,
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69 NumberOfInUseLists = 4
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70 };
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71
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72 enum ChunkSizes { // in words.
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73 ClassSpecializedChunk = 128,
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74 SpecializedChunk = 128,
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75 ClassSmallChunk = 256,
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76 SmallChunk = 512,
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77 ClassMediumChunk = 4 * K,
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78 MediumChunk = 8 * K
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79 };
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80
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81 static ChunkIndex next_chunk_index(ChunkIndex i) {
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82 assert(i < NumberOfInUseLists, "Out of bound");
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83 return (ChunkIndex) (i+1);
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84 }
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85
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86 volatile intptr_t MetaspaceGC::_capacity_until_GC = 0;
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87 uint MetaspaceGC::_shrink_factor = 0;
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88 bool MetaspaceGC::_should_concurrent_collect = false;
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89
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90 typedef class FreeList<Metachunk> ChunkList;
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91
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92 // Manages the global free lists of chunks.
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93 class ChunkManager : public CHeapObj<mtInternal> {
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94 friend class TestVirtualSpaceNodeTest;
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95
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96 // Free list of chunks of different sizes.
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97 // SpecializedChunk
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98 // SmallChunk
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99 // MediumChunk
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100 // HumongousChunk
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101 ChunkList _free_chunks[NumberOfFreeLists];
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102
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103 // HumongousChunk
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104 ChunkTreeDictionary _humongous_dictionary;
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105
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106 // ChunkManager in all lists of this type
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107 size_t _free_chunks_total;
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108 size_t _free_chunks_count;
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109
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110 void dec_free_chunks_total(size_t v) {
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111 assert(_free_chunks_count > 0 &&
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112 _free_chunks_total > 0,
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113 "About to go negative");
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114 Atomic::add_ptr(-1, &_free_chunks_count);
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115 jlong minus_v = (jlong) - (jlong) v;
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116 Atomic::add_ptr(minus_v, &_free_chunks_total);
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117 }
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118
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119 // Debug support
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120
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121 size_t sum_free_chunks();
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122 size_t sum_free_chunks_count();
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123
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124 void locked_verify_free_chunks_total();
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125 void slow_locked_verify_free_chunks_total() {
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126 if (metaspace_slow_verify) {
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127 locked_verify_free_chunks_total();
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128 }
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129 }
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130 void locked_verify_free_chunks_count();
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131 void slow_locked_verify_free_chunks_count() {
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132 if (metaspace_slow_verify) {
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133 locked_verify_free_chunks_count();
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134 }
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135 }
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136 void verify_free_chunks_count();
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137
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138 public:
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139
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140 ChunkManager(size_t specialized_size, size_t small_size, size_t medium_size)
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141 : _free_chunks_total(0), _free_chunks_count(0) {
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142 _free_chunks[SpecializedIndex].set_size(specialized_size);
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143 _free_chunks[SmallIndex].set_size(small_size);
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144 _free_chunks[MediumIndex].set_size(medium_size);
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145 }
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146
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147 // add or delete (return) a chunk to the global freelist.
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148 Metachunk* chunk_freelist_allocate(size_t word_size);
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149
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150 // Map a size to a list index assuming that there are lists
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151 // for special, small, medium, and humongous chunks.
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152 static ChunkIndex list_index(size_t size);
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153
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154 // Remove the chunk from its freelist. It is
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155 // expected to be on one of the _free_chunks[] lists.
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156 void remove_chunk(Metachunk* chunk);
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157
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158 // Add the simple linked list of chunks to the freelist of chunks
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159 // of type index.
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160 void return_chunks(ChunkIndex index, Metachunk* chunks);
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161
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162 // Total of the space in the free chunks list
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163 size_t free_chunks_total_words();
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164 size_t free_chunks_total_bytes();
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165
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166 // Number of chunks in the free chunks list
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167 size_t free_chunks_count();
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168
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169 void inc_free_chunks_total(size_t v, size_t count = 1) {
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170 Atomic::add_ptr(count, &_free_chunks_count);
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171 Atomic::add_ptr(v, &_free_chunks_total);
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172 }
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173 ChunkTreeDictionary* humongous_dictionary() {
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174 return &_humongous_dictionary;
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175 }
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176
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177 ChunkList* free_chunks(ChunkIndex index);
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178
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179 // Returns the list for the given chunk word size.
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180 ChunkList* find_free_chunks_list(size_t word_size);
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181
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182 // Remove from a list by size. Selects list based on size of chunk.
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183 Metachunk* free_chunks_get(size_t chunk_word_size);
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184
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185 // Debug support
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186 void verify();
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187 void slow_verify() {
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188 if (metaspace_slow_verify) {
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189 verify();
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190 }
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191 }
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192 void locked_verify();
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193 void slow_locked_verify() {
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194 if (metaspace_slow_verify) {
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195 locked_verify();
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196 }
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197 }
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198 void verify_free_chunks_total();
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199
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200 void locked_print_free_chunks(outputStream* st);
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201 void locked_print_sum_free_chunks(outputStream* st);
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202
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203 void print_on(outputStream* st) const;
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204 };
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205
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206 // Used to manage the free list of Metablocks (a block corresponds
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207 // to the allocation of a quantum of metadata).
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208 class BlockFreelist VALUE_OBJ_CLASS_SPEC {
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209 BlockTreeDictionary* _dictionary;
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210
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211 // Only allocate and split from freelist if the size of the allocation
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212 // is at least 1/4th the size of the available block.
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213 const static int WasteMultiplier = 4;
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214
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215 // Accessors
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216 BlockTreeDictionary* dictionary() const { return _dictionary; }
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217
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218 public:
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219 BlockFreelist();
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220 ~BlockFreelist();
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221
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222 // Get and return a block to the free list
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223 MetaWord* get_block(size_t word_size);
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224 void return_block(MetaWord* p, size_t word_size);
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225
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226 size_t total_size() {
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227 if (dictionary() == NULL) {
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228 return 0;
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229 } else {
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230 return dictionary()->total_size();
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231 }
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232 }
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233
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234 void print_on(outputStream* st) const;
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235 };
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236
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237 // A VirtualSpaceList node.
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238 class VirtualSpaceNode : public CHeapObj<mtClass> {
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239 friend class VirtualSpaceList;
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240
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241 // Link to next VirtualSpaceNode
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242 VirtualSpaceNode* _next;
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243
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244 // total in the VirtualSpace
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245 MemRegion _reserved;
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246 ReservedSpace _rs;
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247 VirtualSpace _virtual_space;
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248 MetaWord* _top;
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249 // count of chunks contained in this VirtualSpace
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250 uintx _container_count;
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251
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252 // Convenience functions to access the _virtual_space
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253 char* low() const { return virtual_space()->low(); }
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254 char* high() const { return virtual_space()->high(); }
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255
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256 // The first Metachunk will be allocated at the bottom of the
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257 // VirtualSpace
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258 Metachunk* first_chunk() { return (Metachunk*) bottom(); }
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259
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260 // Committed but unused space in the virtual space
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261 size_t free_words_in_vs() const;
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262 public:
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263
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264 VirtualSpaceNode(size_t byte_size);
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265 VirtualSpaceNode(ReservedSpace rs) : _top(NULL), _next(NULL), _rs(rs), _container_count(0) {}
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266 ~VirtualSpaceNode();
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267
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268 // Convenience functions for logical bottom and end
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269 MetaWord* bottom() const { return (MetaWord*) _virtual_space.low(); }
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270 MetaWord* end() const { return (MetaWord*) _virtual_space.high(); }
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271
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272 size_t reserved_words() const { return _virtual_space.reserved_size() / BytesPerWord; }
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273 size_t committed_words() const { return _virtual_space.actual_committed_size() / BytesPerWord; }
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274
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275 bool is_pre_committed() const { return _virtual_space.special(); }
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276
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277 // address of next available space in _virtual_space;
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278 // Accessors
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279 VirtualSpaceNode* next() { return _next; }
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280 void set_next(VirtualSpaceNode* v) { _next = v; }
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281
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282 void set_reserved(MemRegion const v) { _reserved = v; }
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283 void set_top(MetaWord* v) { _top = v; }
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284
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285 // Accessors
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286 MemRegion* reserved() { return &_reserved; }
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287 VirtualSpace* virtual_space() const { return (VirtualSpace*) &_virtual_space; }
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288
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289 // Returns true if "word_size" is available in the VirtualSpace
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290 bool is_available(size_t word_size) { return _top + word_size <= end(); }
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291
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292 MetaWord* top() const { return _top; }
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293 void inc_top(size_t word_size) { _top += word_size; }
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294
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295 uintx container_count() { return _container_count; }
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296 void inc_container_count();
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297 void dec_container_count();
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298 #ifdef ASSERT
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299 uint container_count_slow();
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300 void verify_container_count();
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301 #endif
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302
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303 // used and capacity in this single entry in the list
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304 size_t used_words_in_vs() const;
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305 size_t capacity_words_in_vs() const;
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306
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307 bool initialize();
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308
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309 // get space from the virtual space
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310 Metachunk* take_from_committed(size_t chunk_word_size);
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311
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312 // Allocate a chunk from the virtual space and return it.
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313 Metachunk* get_chunk_vs(size_t chunk_word_size);
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314
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315 // Expands/shrinks the committed space in a virtual space. Delegates
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316 // to Virtualspace
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317 bool expand_by(size_t min_words, size_t preferred_words);
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318
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319 // In preparation for deleting this node, remove all the chunks
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320 // in the node from any freelist.
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321 void purge(ChunkManager* chunk_manager);
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322
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323 // If an allocation doesn't fit in the current node a new node is created.
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324 // Allocate chunks out of the remaining committed space in this node
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325 // to avoid wasting that memory.
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326 // This always adds up because all the chunk sizes are multiples of
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327 // the smallest chunk size.
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328 void retire(ChunkManager* chunk_manager);
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329
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330 #ifdef ASSERT
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331 // Debug support
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332 void mangle();
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333 #endif
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334
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335 void print_on(outputStream* st) const;
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336 };
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337
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338 #define assert_is_ptr_aligned(ptr, alignment) \
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339 assert(is_ptr_aligned(ptr, alignment), \
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340 err_msg(PTR_FORMAT " is not aligned to " \
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341 SIZE_FORMAT, ptr, alignment))
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342
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343 #define assert_is_size_aligned(size, alignment) \
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344 assert(is_size_aligned(size, alignment), \
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345 err_msg(SIZE_FORMAT " is not aligned to " \
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346 SIZE_FORMAT, size, alignment))
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347
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348
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349 // Decide if large pages should be committed when the memory is reserved.
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350 static bool should_commit_large_pages_when_reserving(size_t bytes) {
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351 if (UseLargePages && UseLargePagesInMetaspace && !os::can_commit_large_page_memory()) {
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352 size_t words = bytes / BytesPerWord;
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353 bool is_class = false; // We never reserve large pages for the class space.
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354 if (MetaspaceGC::can_expand(words, is_class) &&
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355 MetaspaceGC::allowed_expansion() >= words) {
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356 return true;
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357 }
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358 }
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359
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360 return false;
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361 }
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362
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363 // byte_size is the size of the associated virtualspace.
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364 VirtualSpaceNode::VirtualSpaceNode(size_t bytes) : _top(NULL), _next(NULL), _rs(), _container_count(0) {
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365 assert_is_size_aligned(bytes, Metaspace::reserve_alignment());
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366
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367 // This allocates memory with mmap. For DumpSharedspaces, try to reserve
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368 // configurable address, generally at the top of the Java heap so other
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369 // memory addresses don't conflict.
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370 if (DumpSharedSpaces) {
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371 bool large_pages = false; // No large pages when dumping the CDS archive.
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372 char* shared_base = (char*)align_ptr_up((char*)SharedBaseAddress, Metaspace::reserve_alignment());
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373
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374 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages, shared_base, 0);
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375 if (_rs.is_reserved()) {
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376 assert(shared_base == 0 || _rs.base() == shared_base, "should match");
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377 } else {
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378 // Get a mmap region anywhere if the SharedBaseAddress fails.
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379 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages);
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380 }
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381 MetaspaceShared::set_shared_rs(&_rs);
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382 } else {
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383 bool large_pages = should_commit_large_pages_when_reserving(bytes);
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384
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385 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages);
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386 }
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387
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388 if (_rs.is_reserved()) {
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389 assert(_rs.base() != NULL, "Catch if we get a NULL address");
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390 assert(_rs.size() != 0, "Catch if we get a 0 size");
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391 assert_is_ptr_aligned(_rs.base(), Metaspace::reserve_alignment());
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392 assert_is_size_aligned(_rs.size(), Metaspace::reserve_alignment());
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393
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394 MemTracker::record_virtual_memory_type((address)_rs.base(), mtClass);
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395 }
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396 }
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397
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398 void VirtualSpaceNode::purge(ChunkManager* chunk_manager) {
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399 Metachunk* chunk = first_chunk();
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400 Metachunk* invalid_chunk = (Metachunk*) top();
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401 while (chunk < invalid_chunk ) {
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402 assert(chunk->is_tagged_free(), "Should be tagged free");
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403 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size();
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404 chunk_manager->remove_chunk(chunk);
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405 assert(chunk->next() == NULL &&
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406 chunk->prev() == NULL,
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407 "Was not removed from its list");
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408 chunk = (Metachunk*) next;
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409 }
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410 }
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411
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412 #ifdef ASSERT
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413 uint VirtualSpaceNode::container_count_slow() {
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414 uint count = 0;
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415 Metachunk* chunk = first_chunk();
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416 Metachunk* invalid_chunk = (Metachunk*) top();
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417 while (chunk < invalid_chunk ) {
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418 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size();
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419 // Don't count the chunks on the free lists. Those are
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420 // still part of the VirtualSpaceNode but not currently
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421 // counted.
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422 if (!chunk->is_tagged_free()) {
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423 count++;
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424 }
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425 chunk = (Metachunk*) next;
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426 }
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427 return count;
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428 }
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429 #endif
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430
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431 // List of VirtualSpaces for metadata allocation.
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432 class VirtualSpaceList : public CHeapObj<mtClass> {
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433 friend class VirtualSpaceNode;
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434
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435 enum VirtualSpaceSizes {
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436 VirtualSpaceSize = 256 * K
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437 };
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438
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439 // Head of the list
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440 VirtualSpaceNode* _virtual_space_list;
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441 // virtual space currently being used for allocations
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442 VirtualSpaceNode* _current_virtual_space;
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443
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444 // Is this VirtualSpaceList used for the compressed class space
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445 bool _is_class;
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446
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447 // Sum of reserved and committed memory in the virtual spaces
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448 size_t _reserved_words;
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449 size_t _committed_words;
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450
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451 // Number of virtual spaces
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452 size_t _virtual_space_count;
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453
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454 ~VirtualSpaceList();
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455
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456 VirtualSpaceNode* virtual_space_list() const { return _virtual_space_list; }
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457
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458 void set_virtual_space_list(VirtualSpaceNode* v) {
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459 _virtual_space_list = v;
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460 }
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461 void set_current_virtual_space(VirtualSpaceNode* v) {
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462 _current_virtual_space = v;
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463 }
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464
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465 void link_vs(VirtualSpaceNode* new_entry);
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466
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467 // Get another virtual space and add it to the list. This
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468 // is typically prompted by a failed attempt to allocate a chunk
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469 // and is typically followed by the allocation of a chunk.
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470 bool create_new_virtual_space(size_t vs_word_size);
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471
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472 // Chunk up the unused committed space in the current
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473 // virtual space and add the chunks to the free list.
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474 void retire_current_virtual_space();
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475
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476 public:
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477 VirtualSpaceList(size_t word_size);
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478 VirtualSpaceList(ReservedSpace rs);
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479
10183
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480 size_t free_bytes();
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481
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482 Metachunk* get_new_chunk(size_t word_size,
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483 size_t grow_chunks_by_words,
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484 size_t medium_chunk_bunch);
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485
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486 bool expand_node_by(VirtualSpaceNode* node,
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487 size_t min_words,
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488 size_t preferred_words);
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489
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490 bool expand_by(size_t min_words,
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491 size_t preferred_words);
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492
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493 VirtualSpaceNode* current_virtual_space() {
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494 return _current_virtual_space;
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495 }
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496
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497 bool is_class() const { return _is_class; }
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498
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499 bool initialization_succeeded() { return _virtual_space_list != NULL; }
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500
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501 size_t reserved_words() { return _reserved_words; }
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502 size_t reserved_bytes() { return reserved_words() * BytesPerWord; }
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503 size_t committed_words() { return _committed_words; }
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504 size_t committed_bytes() { return committed_words() * BytesPerWord; }
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505
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506 void inc_reserved_words(size_t v);
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507 void dec_reserved_words(size_t v);
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508 void inc_committed_words(size_t v);
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509 void dec_committed_words(size_t v);
10175
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510 void inc_virtual_space_count();
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511 void dec_virtual_space_count();
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512
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513 // Unlink empty VirtualSpaceNodes and free it.
12303
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514 void purge(ChunkManager* chunk_manager);
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515
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516 bool contains(const void *ptr);
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517
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518 void print_on(outputStream* st) const;
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519
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520 class VirtualSpaceListIterator : public StackObj {
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521 VirtualSpaceNode* _virtual_spaces;
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522 public:
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523 VirtualSpaceListIterator(VirtualSpaceNode* virtual_spaces) :
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524 _virtual_spaces(virtual_spaces) {}
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525
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526 bool repeat() {
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527 return _virtual_spaces != NULL;
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528 }
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529
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530 VirtualSpaceNode* get_next() {
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531 VirtualSpaceNode* result = _virtual_spaces;
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532 if (_virtual_spaces != NULL) {
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533 _virtual_spaces = _virtual_spaces->next();
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534 }
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535 return result;
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536 }
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537 };
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538 };
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539
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540 class Metadebug : AllStatic {
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coleenp
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541 // Debugging support for Metaspaces
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542 static int _allocation_fail_alot_count;
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543
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544 public:
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545
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546 static void init_allocation_fail_alot_count();
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547 #ifdef ASSERT
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548 static bool test_metadata_failure();
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549 #endif
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550 };
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551
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552 int Metadebug::_allocation_fail_alot_count = 0;
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553
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coleenp
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554 // SpaceManager - used by Metaspace to handle allocations
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diff changeset
555 class SpaceManager : public CHeapObj<mtClass> {
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556 friend class Metaspace;
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diff changeset
557 friend class Metadebug;
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558
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559 private:
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diff changeset
560
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561 // protects allocations and contains.
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562 Mutex* const _lock;
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diff changeset
563
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
564 // Type of metadata allocated.
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565 Metaspace::MetadataType _mdtype;
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566
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567 // List of chunks in use by this SpaceManager. Allocations
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568 // are done from the current chunk. The list is used for deallocating
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569 // chunks when the SpaceManager is freed.
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
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570 Metachunk* _chunks_in_use[NumberOfInUseLists];
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571 Metachunk* _current_chunk;
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572
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coleenp
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573 // Number of small chunks to allocate to a manager
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coleenp
parents:
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574 // If class space manager, small chunks are unlimited
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575 static uint const _small_chunk_limit;
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576
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577 // Sum of all space in allocated chunks
10183
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578 size_t _allocated_blocks_words;
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579
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jmasa
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diff changeset
580 // Sum of all allocated chunks
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jmasa
parents: 10175
diff changeset
581 size_t _allocated_chunks_words;
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diff changeset
582 size_t _allocated_chunks_count;
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583
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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diff changeset
584 // Free lists of blocks are per SpaceManager since they
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
585 // are assumed to be in chunks in use by the SpaceManager
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coleenp
parents:
diff changeset
586 // and all chunks in use by a SpaceManager are freed when
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coleenp
parents:
diff changeset
587 // the class loader using the SpaceManager is collected.
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diff changeset
588 BlockFreelist _block_freelists;
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parents:
diff changeset
589
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
590 // protects virtualspace and chunk expansions
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coleenp
parents:
diff changeset
591 static const char* _expand_lock_name;
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coleenp
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diff changeset
592 static const int _expand_lock_rank;
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coleenp
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593 static Mutex* const _expand_lock;
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coleenp
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diff changeset
594
7446
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diff changeset
595 private:
6725
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596 // Accessors
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
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597 Metachunk* chunks_in_use(ChunkIndex index) const { return _chunks_in_use[index]; }
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598 void set_chunks_in_use(ChunkIndex index, Metachunk* v) { _chunks_in_use[index] = v; }
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coleenp
parents:
diff changeset
599
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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600 BlockFreelist* block_freelists() const {
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coleenp
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601 return (BlockFreelist*) &_block_freelists;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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602 }
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603
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604 Metaspace::MetadataType mdtype() { return _mdtype; }
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605
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diff changeset
606 VirtualSpaceList* vs_list() const { return Metaspace::get_space_list(_mdtype); }
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607 ChunkManager* chunk_manager() const { return Metaspace::get_chunk_manager(_mdtype); }
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608
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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609 Metachunk* current_chunk() const { return _current_chunk; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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610 void set_current_chunk(Metachunk* v) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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611 _current_chunk = v;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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612 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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613
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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614 Metachunk* find_current_chunk(size_t word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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615
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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616 // Add chunk to the list of chunks in use
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617 void add_chunk(Metachunk* v, bool make_current);
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diff changeset
618 void retire_current_chunk();
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619
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620 Mutex* lock() const { return _lock; }
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621
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diff changeset
622 const char* chunk_size_name(ChunkIndex index) const;
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diff changeset
623
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624 protected:
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625 void initialize();
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626
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627 public:
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628 SpaceManager(Metaspace::MetadataType mdtype,
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diff changeset
629 Mutex* lock);
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630 ~SpaceManager();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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631
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632 enum ChunkMultiples {
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633 MediumChunkMultiple = 4
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634 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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635
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636 bool is_class() { return _mdtype == Metaspace::ClassType; }
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diff changeset
637
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638 // Accessors
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639 size_t specialized_chunk_size() { return (size_t) is_class() ? ClassSpecializedChunk : SpecializedChunk; }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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640 size_t small_chunk_size() { return (size_t) is_class() ? ClassSmallChunk : SmallChunk; }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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parents: 12906
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641 size_t medium_chunk_size() { return (size_t) is_class() ? ClassMediumChunk : MediumChunk; }
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mgerdin
parents: 12906
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642 size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
643
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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parents: 12906
diff changeset
644 size_t smallest_chunk_size() { return specialized_chunk_size(); }
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parents: 7435
diff changeset
645
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646 size_t allocated_blocks_words() const { return _allocated_blocks_words; }
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647 size_t allocated_blocks_bytes() const { return _allocated_blocks_words * BytesPerWord; }
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648 size_t allocated_chunks_words() const { return _allocated_chunks_words; }
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649 size_t allocated_chunks_count() const { return _allocated_chunks_count; }
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diff changeset
650
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651 bool is_humongous(size_t word_size) { return word_size > medium_chunk_size(); }
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652
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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653 static Mutex* expand_lock() { return _expand_lock; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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654
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655 // Increment the per Metaspace and global running sums for Metachunks
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656 // by the given size. This is used when a Metachunk to added to
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parents: 10175
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657 // the in-use list.
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parents: 10175
diff changeset
658 void inc_size_metrics(size_t words);
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diff changeset
659 // Increment the per Metaspace and global running sums Metablocks by the given
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parents: 10175
diff changeset
660 // size. This is used when a Metablock is allocated.
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parents: 10175
diff changeset
661 void inc_used_metrics(size_t words);
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parents: 10175
diff changeset
662 // Delete the portion of the running sums for this SpaceManager. That is,
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
663 // the globals running sums for the Metachunks and Metablocks are
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
664 // decremented for all the Metachunks in-use by this SpaceManager.
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
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665 void dec_total_from_size_metrics();
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parents: 10175
diff changeset
666
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667 // Set the sizes for the initial chunks.
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
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parents: 7435
diff changeset
668 void get_initial_chunk_sizes(Metaspace::MetaspaceType type,
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jmasa
parents: 7435
diff changeset
669 size_t* chunk_word_size,
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jmasa
parents: 7435
diff changeset
670 size_t* class_chunk_word_size);
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parents: 7435
diff changeset
671
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672 size_t sum_capacity_in_chunks_in_use() const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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673 size_t sum_used_in_chunks_in_use() const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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674 size_t sum_free_in_chunks_in_use() const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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parents:
diff changeset
675 size_t sum_waste_in_chunks_in_use() const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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parents:
diff changeset
676 size_t sum_waste_in_chunks_in_use(ChunkIndex index ) const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
677
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
678 size_t sum_count_in_chunks_in_use();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
679 size_t sum_count_in_chunks_in_use(ChunkIndex i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
680
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
681 Metachunk* get_new_chunk(size_t word_size, size_t grow_chunks_by_words);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
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parents: 7435
diff changeset
682
6725
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parents:
diff changeset
683 // Block allocation and deallocation.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
684 // Allocates a block from the current chunk
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
685 MetaWord* allocate(size_t word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
686
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
687 // Helper for allocations
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
688 MetaWord* allocate_work(size_t word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
689
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
690 // Returns a block to the per manager freelist
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
691 void deallocate(MetaWord* p, size_t word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
692
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
693 // Based on the allocation size and a minimum chunk size,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
694 // returned chunk size (for expanding space for chunk allocation).
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
695 size_t calc_chunk_size(size_t allocation_word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
696
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
697 // Called when an allocation from the current chunk fails.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
698 // Gets a new chunk (may require getting a new virtual space),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
699 // and allocates from that chunk.
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
700 MetaWord* grow_and_allocate(size_t word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
701
12839
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
702 // Notify memory usage to MemoryService.
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
703 void track_metaspace_memory_usage();
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
704
6725
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coleenp
parents:
diff changeset
705 // debugging support.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
706
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
707 void dump(outputStream* const out) const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
708 void print_on(outputStream* st) const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
709 void locked_print_chunks_in_use_on(outputStream* st) const;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
710
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
711 void verify();
7208
eade6b2e4782 8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents: 7187
diff changeset
712 void verify_chunk_size(Metachunk* chunk);
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6969
diff changeset
713 NOT_PRODUCT(void mangle_freed_chunks();)
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
714 #ifdef ASSERT
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
715 void verify_allocated_blocks_words();
6725
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coleenp
parents:
diff changeset
716 #endif
10376
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iklam
parents: 10330
diff changeset
717
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
718 size_t get_raw_word_size(size_t word_size) {
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
719 size_t byte_size = word_size * BytesPerWord;
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
720
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
721 size_t raw_bytes_size = MAX2(byte_size, sizeof(Metablock));
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
722 raw_bytes_size = align_size_up(raw_bytes_size, Metachunk::object_alignment());
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
723
10376
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iklam
parents: 10330
diff changeset
724 size_t raw_word_size = raw_bytes_size / BytesPerWord;
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iklam
parents: 10330
diff changeset
725 assert(raw_word_size * BytesPerWord == raw_bytes_size, "Size problem");
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
726
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
727 return raw_word_size;
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iklam
parents: 10330
diff changeset
728 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
729 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
730
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
731 uint const SpaceManager::_small_chunk_limit = 4;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
732
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
733 const char* SpaceManager::_expand_lock_name =
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
734 "SpaceManager chunk allocation lock";
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
735 const int SpaceManager::_expand_lock_rank = Monitor::leaf - 1;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
736 Mutex* const SpaceManager::_expand_lock =
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
737 new Mutex(SpaceManager::_expand_lock_rank,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
738 SpaceManager::_expand_lock_name,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
739 Mutex::_allow_vm_block_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
740
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
741 void VirtualSpaceNode::inc_container_count() {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
742 assert_lock_strong(SpaceManager::expand_lock());
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
743 _container_count++;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
744 assert(_container_count == container_count_slow(),
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
745 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
746 " container_count_slow() " SIZE_FORMAT,
10175
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jmasa
parents: 10101
diff changeset
747 _container_count, container_count_slow()));
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
748 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
749
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
750 void VirtualSpaceNode::dec_container_count() {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
751 assert_lock_strong(SpaceManager::expand_lock());
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
752 _container_count--;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
753 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
754
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
755 #ifdef ASSERT
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
756 void VirtualSpaceNode::verify_container_count() {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
757 assert(_container_count == container_count_slow(),
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
758 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
759 " container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow()));
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
760 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
761 #endif
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
762
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
763 // BlockFreelist methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
764
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
765 BlockFreelist::BlockFreelist() : _dictionary(NULL) {}
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
766
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
767 BlockFreelist::~BlockFreelist() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
768 if (_dictionary != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
769 if (Verbose && TraceMetadataChunkAllocation) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
770 _dictionary->print_free_lists(gclog_or_tty);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
771 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
772 delete _dictionary;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
773 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
774 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
775
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
776 void BlockFreelist::return_block(MetaWord* p, size_t word_size) {
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
777 Metablock* free_chunk = ::new (p) Metablock(word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
778 if (dictionary() == NULL) {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
779 _dictionary = new BlockTreeDictionary();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
780 }
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
781 dictionary()->return_chunk(free_chunk);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
782 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
783
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
784 MetaWord* BlockFreelist::get_block(size_t word_size) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
785 if (dictionary() == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
786 return NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
787 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
788
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
789 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
790 // Dark matter. Too small for dictionary.
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
791 return NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
792 }
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
793
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
794 Metablock* free_block =
12231
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
795 dictionary()->get_chunk(word_size, FreeBlockDictionary<Metablock>::atLeast);
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
796 if (free_block == NULL) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
797 return NULL;
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
798 }
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
799
12231
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
800 const size_t block_size = free_block->size();
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
801 if (block_size > WasteMultiplier * word_size) {
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
802 return_block((MetaWord*)free_block, block_size);
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
803 return NULL;
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
804 }
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
805
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
806 MetaWord* new_block = (MetaWord*)free_block;
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
807 assert(block_size >= word_size, "Incorrect size of block from freelist");
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
808 const size_t unused = block_size - word_size;
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
809 if (unused >= TreeChunk<Metablock, FreeList>::min_size()) {
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
810 return_block(new_block + word_size, unused);
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
811 }
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
812
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
813 return new_block;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
814 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
815
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
816 void BlockFreelist::print_on(outputStream* st) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
817 if (dictionary() == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
818 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
819 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
820 dictionary()->print_free_lists(st);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
821 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
822
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
823 // VirtualSpaceNode methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
824
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
825 VirtualSpaceNode::~VirtualSpaceNode() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
826 _rs.release();
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
827 #ifdef ASSERT
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
828 size_t word_size = sizeof(*this) / BytesPerWord;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
829 Copy::fill_to_words((HeapWord*) this, word_size, 0xf1f1f1f1);
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
830 #endif
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
831 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
832
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
833 size_t VirtualSpaceNode::used_words_in_vs() const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
834 return pointer_delta(top(), bottom(), sizeof(MetaWord));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
835 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
836
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
837 // Space committed in the VirtualSpace
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
838 size_t VirtualSpaceNode::capacity_words_in_vs() const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
839 return pointer_delta(end(), bottom(), sizeof(MetaWord));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
840 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
841
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
842 size_t VirtualSpaceNode::free_words_in_vs() const {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
843 return pointer_delta(end(), top(), sizeof(MetaWord));
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
844 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
845
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
846 // Allocates the chunk from the virtual space only.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
847 // This interface is also used internally for debugging. Not all
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
848 // chunks removed here are necessarily used for allocation.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
849 Metachunk* VirtualSpaceNode::take_from_committed(size_t chunk_word_size) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
850 // Bottom of the new chunk
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
851 MetaWord* chunk_limit = top();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
852 assert(chunk_limit != NULL, "Not safe to call this method");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
853
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
854 // The virtual spaces are always expanded by the
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
855 // commit granularity to enforce the following condition.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
856 // Without this the is_available check will not work correctly.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
857 assert(_virtual_space.committed_size() == _virtual_space.actual_committed_size(),
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
858 "The committed memory doesn't match the expanded memory.");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
859
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
860 if (!is_available(chunk_word_size)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
861 if (TraceMetadataChunkAllocation) {
12240
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
862 gclog_or_tty->print("VirtualSpaceNode::take_from_committed() not available %d words ", chunk_word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
863 // Dump some information about the virtual space that is nearly full
12240
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
864 print_on(gclog_or_tty);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
865 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
866 return NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
867 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
868
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
869 // Take the space (bump top on the current virtual space).
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
870 inc_top(chunk_word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
871
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
872 // Initialize the chunk
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
873 Metachunk* result = ::new (chunk_limit) Metachunk(chunk_word_size, this);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
874 return result;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
875 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
876
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
877
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
878 // Expand the virtual space (commit more of the reserved space)
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
879 bool VirtualSpaceNode::expand_by(size_t min_words, size_t preferred_words) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
880 size_t min_bytes = min_words * BytesPerWord;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
881 size_t preferred_bytes = preferred_words * BytesPerWord;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
882
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
883 size_t uncommitted = virtual_space()->reserved_size() - virtual_space()->actual_committed_size();
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
884
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
885 if (uncommitted < min_bytes) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
886 return false;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
887 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
888
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
889 size_t commit = MIN2(preferred_bytes, uncommitted);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
890 bool result = virtual_space()->expand_by(commit, false);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
891
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
892 assert(result, "Failed to commit memory");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
893
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
894 return result;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
895 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
896
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
897 Metachunk* VirtualSpaceNode::get_chunk_vs(size_t chunk_word_size) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
898 assert_lock_strong(SpaceManager::expand_lock());
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
899 Metachunk* result = take_from_committed(chunk_word_size);
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
900 if (result != NULL) {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
901 inc_container_count();
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
902 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
903 return result;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
904 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
905
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
906 bool VirtualSpaceNode::initialize() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
907
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
908 if (!_rs.is_reserved()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
909 return false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
910 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
911
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
912 // These are necessary restriction to make sure that the virtual space always
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
913 // grows in steps of Metaspace::commit_alignment(). If both base and size are
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
914 // aligned only the middle alignment of the VirtualSpace is used.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
915 assert_is_ptr_aligned(_rs.base(), Metaspace::commit_alignment());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
916 assert_is_size_aligned(_rs.size(), Metaspace::commit_alignment());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
917
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
918 // ReservedSpaces marked as special will have the entire memory
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
919 // pre-committed. Setting a committed size will make sure that
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
920 // committed_size and actual_committed_size agrees.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
921 size_t pre_committed_size = _rs.special() ? _rs.size() : 0;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
922
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
923 bool result = virtual_space()->initialize_with_granularity(_rs, pre_committed_size,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
924 Metaspace::commit_alignment());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
925 if (result) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
926 assert(virtual_space()->committed_size() == virtual_space()->actual_committed_size(),
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
927 "Checking that the pre-committed memory was registered by the VirtualSpace");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
928
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
929 set_top((MetaWord*)virtual_space()->low());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
930 set_reserved(MemRegion((HeapWord*)_rs.base(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
931 (HeapWord*)(_rs.base() + _rs.size())));
6726
03049e0e8544 7195823: NPG: CMS reserved() doesn't match _rs.base().
coleenp
parents: 6725
diff changeset
932
03049e0e8544 7195823: NPG: CMS reserved() doesn't match _rs.base().
coleenp
parents: 6725
diff changeset
933 assert(reserved()->start() == (HeapWord*) _rs.base(),
03049e0e8544 7195823: NPG: CMS reserved() doesn't match _rs.base().
coleenp
parents: 6725
diff changeset
934 err_msg("Reserved start was not set properly " PTR_FORMAT
03049e0e8544 7195823: NPG: CMS reserved() doesn't match _rs.base().
coleenp
parents: 6725
diff changeset
935 " != " PTR_FORMAT, reserved()->start(), _rs.base()));
03049e0e8544 7195823: NPG: CMS reserved() doesn't match _rs.base().
coleenp
parents: 6725
diff changeset
936 assert(reserved()->word_size() == _rs.size() / BytesPerWord,
03049e0e8544 7195823: NPG: CMS reserved() doesn't match _rs.base().
coleenp
parents: 6725
diff changeset
937 err_msg("Reserved size was not set properly " SIZE_FORMAT
03049e0e8544 7195823: NPG: CMS reserved() doesn't match _rs.base().
coleenp
parents: 6725
diff changeset
938 " != " SIZE_FORMAT, reserved()->word_size(),
03049e0e8544 7195823: NPG: CMS reserved() doesn't match _rs.base().
coleenp
parents: 6725
diff changeset
939 _rs.size() / BytesPerWord));
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
940 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
941
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
942 return result;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
943 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
944
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
945 void VirtualSpaceNode::print_on(outputStream* st) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
946 size_t used = used_words_in_vs();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
947 size_t capacity = capacity_words_in_vs();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
948 VirtualSpace* vs = virtual_space();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
949 st->print_cr(" space @ " PTR_FORMAT " " SIZE_FORMAT "K, %3d%% used "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
950 "[" PTR_FORMAT ", " PTR_FORMAT ", "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
951 PTR_FORMAT ", " PTR_FORMAT ")",
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
952 vs, capacity / K,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
953 capacity == 0 ? 0 : used * 100 / capacity,
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
954 bottom(), top(), end(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
955 vs->high_boundary());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
956 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
957
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6969
diff changeset
958 #ifdef ASSERT
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
959 void VirtualSpaceNode::mangle() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
960 size_t word_size = capacity_words_in_vs();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
961 Copy::fill_to_words((HeapWord*) low(), word_size, 0xf1f1f1f1);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
962 }
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6969
diff changeset
963 #endif // ASSERT
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
964
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
965 // VirtualSpaceList methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
966 // Space allocated from the VirtualSpace
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
967
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
968 VirtualSpaceList::~VirtualSpaceList() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
969 VirtualSpaceListIterator iter(virtual_space_list());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
970 while (iter.repeat()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
971 VirtualSpaceNode* vsl = iter.get_next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
972 delete vsl;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
973 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
974 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
975
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
976 void VirtualSpaceList::inc_reserved_words(size_t v) {
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
977 assert_lock_strong(SpaceManager::expand_lock());
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
978 _reserved_words = _reserved_words + v;
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
979 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
980 void VirtualSpaceList::dec_reserved_words(size_t v) {
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
981 assert_lock_strong(SpaceManager::expand_lock());
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
982 _reserved_words = _reserved_words - v;
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
983 }
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
984
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
985 #define assert_committed_below_limit() \
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
986 assert(MetaspaceAux::committed_bytes() <= MaxMetaspaceSize, \
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
987 err_msg("Too much committed memory. Committed: " SIZE_FORMAT \
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
988 " limit (MaxMetaspaceSize): " SIZE_FORMAT, \
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
989 MetaspaceAux::committed_bytes(), MaxMetaspaceSize));
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
990
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
991 void VirtualSpaceList::inc_committed_words(size_t v) {
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
992 assert_lock_strong(SpaceManager::expand_lock());
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
993 _committed_words = _committed_words + v;
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
994
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
995 assert_committed_below_limit();
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
996 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
997 void VirtualSpaceList::dec_committed_words(size_t v) {
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
998 assert_lock_strong(SpaceManager::expand_lock());
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
999 _committed_words = _committed_words - v;
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1000
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1001 assert_committed_below_limit();
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1002 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1003
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1004 void VirtualSpaceList::inc_virtual_space_count() {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1005 assert_lock_strong(SpaceManager::expand_lock());
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1006 _virtual_space_count++;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1007 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1008 void VirtualSpaceList::dec_virtual_space_count() {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1009 assert_lock_strong(SpaceManager::expand_lock());
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1010 _virtual_space_count--;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1011 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1012
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1013 void ChunkManager::remove_chunk(Metachunk* chunk) {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1014 size_t word_size = chunk->word_size();
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1015 ChunkIndex index = list_index(word_size);
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1016 if (index != HumongousIndex) {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1017 free_chunks(index)->remove_chunk(chunk);
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1018 } else {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1019 humongous_dictionary()->remove_chunk(chunk);
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1020 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1021
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1022 // Chunk is being removed from the chunks free list.
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
1023 dec_free_chunks_total(chunk->word_size());
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1024 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1025
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1026 // Walk the list of VirtualSpaceNodes and delete
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1027 // nodes with a 0 container_count. Remove Metachunks in
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1028 // the node from their respective freelists.
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1029 void VirtualSpaceList::purge(ChunkManager* chunk_manager) {
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1030 assert_lock_strong(SpaceManager::expand_lock());
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1031 // Don't use a VirtualSpaceListIterator because this
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1032 // list is being changed and a straightforward use of an iterator is not safe.
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1033 VirtualSpaceNode* purged_vsl = NULL;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1034 VirtualSpaceNode* prev_vsl = virtual_space_list();
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1035 VirtualSpaceNode* next_vsl = prev_vsl;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1036 while (next_vsl != NULL) {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1037 VirtualSpaceNode* vsl = next_vsl;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1038 next_vsl = vsl->next();
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1039 // Don't free the current virtual space since it will likely
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1040 // be needed soon.
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1041 if (vsl->container_count() == 0 && vsl != current_virtual_space()) {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1042 // Unlink it from the list
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1043 if (prev_vsl == vsl) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1044 // This is the case of the current node being the first node.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1045 assert(vsl == virtual_space_list(), "Expected to be the first node");
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1046 set_virtual_space_list(vsl->next());
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1047 } else {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1048 prev_vsl->set_next(vsl->next());
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1049 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1050
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1051 vsl->purge(chunk_manager);
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1052 dec_reserved_words(vsl->reserved_words());
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1053 dec_committed_words(vsl->committed_words());
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1054 dec_virtual_space_count();
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1055 purged_vsl = vsl;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1056 delete vsl;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1057 } else {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1058 prev_vsl = vsl;
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1059 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1060 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1061 #ifdef ASSERT
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1062 if (purged_vsl != NULL) {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1063 // List should be stable enough to use an iterator here.
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1064 VirtualSpaceListIterator iter(virtual_space_list());
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1065 while (iter.repeat()) {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1066 VirtualSpaceNode* vsl = iter.get_next();
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1067 assert(vsl != purged_vsl, "Purge of vsl failed");
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1068 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1069 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1070 #endif
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1071 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1072
12979
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1073 void VirtualSpaceList::retire_current_virtual_space() {
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1074 assert_lock_strong(SpaceManager::expand_lock());
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1075
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1076 VirtualSpaceNode* vsn = current_virtual_space();
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1077
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1078 ChunkManager* cm = is_class() ? Metaspace::chunk_manager_class() :
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1079 Metaspace::chunk_manager_metadata();
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1080
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1081 vsn->retire(cm);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1082 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1083
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1084 void VirtualSpaceNode::retire(ChunkManager* chunk_manager) {
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1085 for (int i = (int)MediumIndex; i >= (int)ZeroIndex; --i) {
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1086 ChunkIndex index = (ChunkIndex)i;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1087 size_t chunk_size = chunk_manager->free_chunks(index)->size();
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1088
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1089 while (free_words_in_vs() >= chunk_size) {
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1090 DEBUG_ONLY(verify_container_count();)
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1091 Metachunk* chunk = get_chunk_vs(chunk_size);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1092 assert(chunk != NULL, "allocation should have been successful");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1093
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1094 chunk_manager->return_chunks(index, chunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1095 chunk_manager->inc_free_chunks_total(chunk_size);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1096 DEBUG_ONLY(verify_container_count();)
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1097 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1098 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1099 assert(free_words_in_vs() == 0, "should be empty now");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1100 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1101
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1102 VirtualSpaceList::VirtualSpaceList(size_t word_size) :
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1103 _is_class(false),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1104 _virtual_space_list(NULL),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1105 _current_virtual_space(NULL),
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1106 _reserved_words(0),
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1107 _committed_words(0),
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1108 _virtual_space_count(0) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1109 MutexLockerEx cl(SpaceManager::expand_lock(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1110 Mutex::_no_safepoint_check_flag);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1111 create_new_virtual_space(word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1112 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1113
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1114 VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) :
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1115 _is_class(true),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1116 _virtual_space_list(NULL),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1117 _current_virtual_space(NULL),
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1118 _reserved_words(0),
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1119 _committed_words(0),
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1120 _virtual_space_count(0) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1121 MutexLockerEx cl(SpaceManager::expand_lock(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1122 Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1123 VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1124 bool succeeded = class_entry->initialize();
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1125 if (succeeded) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1126 link_vs(class_entry);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1127 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1128 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1129
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1130 size_t VirtualSpaceList::free_bytes() {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1131 return virtual_space_list()->free_words_in_vs() * BytesPerWord;
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1132 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1133
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1134 // Allocate another meta virtual space and add it to the list.
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1135 bool VirtualSpaceList::create_new_virtual_space(size_t vs_word_size) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1136 assert_lock_strong(SpaceManager::expand_lock());
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1137
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1138 if (is_class()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1139 assert(false, "We currently don't support more than one VirtualSpace for"
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1140 " the compressed class space. The initialization of the"
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1141 " CCS uses another code path and should not hit this path.");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1142 return false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1143 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1144
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1145 if (vs_word_size == 0) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1146 assert(false, "vs_word_size should always be at least _reserve_alignment large.");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1147 return false;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1148 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1149
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1150 // Reserve the space
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1151 size_t vs_byte_size = vs_word_size * BytesPerWord;
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1152 assert_is_size_aligned(vs_byte_size, Metaspace::reserve_alignment());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1153
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1154 // Allocate the meta virtual space and initialize it.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1155 VirtualSpaceNode* new_entry = new VirtualSpaceNode(vs_byte_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1156 if (!new_entry->initialize()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1157 delete new_entry;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1158 return false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1159 } else {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1160 assert(new_entry->reserved_words() == vs_word_size,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1161 "Reserved memory size differs from requested memory size");
7176
59c790074993 8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents: 6969
diff changeset
1162 // ensure lock-free iteration sees fully initialized node
59c790074993 8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents: 6969
diff changeset
1163 OrderAccess::storestore();
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1164 link_vs(new_entry);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1165 return true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1166 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1167 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1168
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1169 void VirtualSpaceList::link_vs(VirtualSpaceNode* new_entry) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1170 if (virtual_space_list() == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1171 set_virtual_space_list(new_entry);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1172 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1173 current_virtual_space()->set_next(new_entry);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1174 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1175 set_current_virtual_space(new_entry);
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1176 inc_reserved_words(new_entry->reserved_words());
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1177 inc_committed_words(new_entry->committed_words());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1178 inc_virtual_space_count();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1179 #ifdef ASSERT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1180 new_entry->mangle();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1181 #endif
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1182 if (TraceMetavirtualspaceAllocation && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1183 VirtualSpaceNode* vsl = current_virtual_space();
12240
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
1184 vsl->print_on(gclog_or_tty);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1185 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1186 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1187
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1188 bool VirtualSpaceList::expand_node_by(VirtualSpaceNode* node,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1189 size_t min_words,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1190 size_t preferred_words) {
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1191 size_t before = node->committed_words();
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1192
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1193 bool result = node->expand_by(min_words, preferred_words);
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1194
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1195 size_t after = node->committed_words();
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1196
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1197 // after and before can be the same if the memory was pre-committed.
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1198 assert(after >= before, "Inconsistency");
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1199 inc_committed_words(after - before);
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1200
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1201 return result;
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1202 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
1203
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1204 bool VirtualSpaceList::expand_by(size_t min_words, size_t preferred_words) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1205 assert_is_size_aligned(min_words, Metaspace::commit_alignment_words());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1206 assert_is_size_aligned(preferred_words, Metaspace::commit_alignment_words());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1207 assert(min_words <= preferred_words, "Invalid arguments");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1208
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1209 if (!MetaspaceGC::can_expand(min_words, this->is_class())) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1210 return false;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1211 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1212
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1213 size_t allowed_expansion_words = MetaspaceGC::allowed_expansion();
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1214 if (allowed_expansion_words < min_words) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1215 return false;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1216 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1217
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1218 size_t max_expansion_words = MIN2(preferred_words, allowed_expansion_words);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1219
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1220 // Commit more memory from the the current virtual space.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1221 bool vs_expanded = expand_node_by(current_virtual_space(),
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1222 min_words,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1223 max_expansion_words);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1224 if (vs_expanded) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1225 return true;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1226 }
12979
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1227 retire_current_virtual_space();
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1228
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1229 // Get another virtual space.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1230 size_t grow_vs_words = MAX2((size_t)VirtualSpaceSize, preferred_words);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1231 grow_vs_words = align_size_up(grow_vs_words, Metaspace::reserve_alignment_words());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1232
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1233 if (create_new_virtual_space(grow_vs_words)) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1234 if (current_virtual_space()->is_pre_committed()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1235 // The memory was pre-committed, so we are done here.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1236 assert(min_words <= current_virtual_space()->committed_words(),
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1237 "The new VirtualSpace was pre-committed, so it"
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1238 "should be large enough to fit the alloc request.");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1239 return true;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1240 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1241
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1242 return expand_node_by(current_virtual_space(),
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1243 min_words,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1244 max_expansion_words);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1245 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1246
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1247 return false;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1248 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1249
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1250 Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size,
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1251 size_t grow_chunks_by_words,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1252 size_t medium_chunk_bunch) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1253
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1254 // Allocate a chunk out of the current virtual space.
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1255 Metachunk* next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1256
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1257 if (next != NULL) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1258 return next;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1259 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1260
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1261 // The expand amount is currently only determined by the requested sizes
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1262 // and not how much committed memory is left in the current virtual space.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1263
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1264 size_t min_word_size = align_size_up(grow_chunks_by_words, Metaspace::commit_alignment_words());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1265 size_t preferred_word_size = align_size_up(medium_chunk_bunch, Metaspace::commit_alignment_words());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1266 if (min_word_size >= preferred_word_size) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1267 // Can happen when humongous chunks are allocated.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1268 preferred_word_size = min_word_size;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1269 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1270
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1271 bool expanded = expand_by(min_word_size, preferred_word_size);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1272 if (expanded) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1273 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1274 assert(next != NULL, "The allocation was expected to succeed after the expansion");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1275 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1276
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1277 return next;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1278 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1279
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1280 void VirtualSpaceList::print_on(outputStream* st) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1281 if (TraceMetadataChunkAllocation && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1282 VirtualSpaceListIterator iter(virtual_space_list());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1283 while (iter.repeat()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1284 VirtualSpaceNode* node = iter.get_next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1285 node->print_on(st);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1286 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1287 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1288 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1289
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1290 bool VirtualSpaceList::contains(const void *ptr) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1291 VirtualSpaceNode* list = virtual_space_list();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1292 VirtualSpaceListIterator iter(list);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1293 while (iter.repeat()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1294 VirtualSpaceNode* node = iter.get_next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1295 if (node->reserved()->contains(ptr)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1296 return true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1297 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1298 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1299 return false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1300 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1301
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1302
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1303 // MetaspaceGC methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1304
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1305 // VM_CollectForMetadataAllocation is the vm operation used to GC.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1306 // Within the VM operation after the GC the attempt to allocate the metadata
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1307 // should succeed. If the GC did not free enough space for the metaspace
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1308 // allocation, the HWM is increased so that another virtualspace will be
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1309 // allocated for the metadata. With perm gen the increase in the perm
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1310 // gen had bounds, MinMetaspaceExpansion and MaxMetaspaceExpansion. The
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1311 // metaspace policy uses those as the small and large steps for the HWM.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1312 //
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1313 // After the GC the compute_new_size() for MetaspaceGC is called to
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1314 // resize the capacity of the metaspaces. The current implementation
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1315 // is based on the flags MinMetaspaceFreeRatio and MaxMetaspaceFreeRatio used
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1316 // to resize the Java heap by some GC's. New flags can be implemented
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1317 // if really needed. MinMetaspaceFreeRatio is used to calculate how much
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1318 // free space is desirable in the metaspace capacity to decide how much
8040
a83cd101fd62 8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
parents: 8007
diff changeset
1319 // to increase the HWM. MaxMetaspaceFreeRatio is used to decide how much
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1320 // free space is desirable in the metaspace capacity before decreasing
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1321 // the HWM.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1322
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1323 // Calculate the amount to increase the high water mark (HWM).
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1324 // Increase by a minimum amount (MinMetaspaceExpansion) so that
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1325 // another expansion is not requested too soon. If that is not
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1326 // enough to satisfy the allocation, increase by MaxMetaspaceExpansion.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1327 // If that is still not enough, expand by the size of the allocation
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1328 // plus some.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1329 size_t MetaspaceGC::delta_capacity_until_GC(size_t bytes) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1330 size_t min_delta = MinMetaspaceExpansion;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1331 size_t max_delta = MaxMetaspaceExpansion;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1332 size_t delta = align_size_up(bytes, Metaspace::commit_alignment());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1333
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1334 if (delta <= min_delta) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1335 delta = min_delta;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1336 } else if (delta <= max_delta) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1337 // Don't want to hit the high water mark on the next
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1338 // allocation so make the delta greater than just enough
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1339 // for this allocation.
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1340 delta = max_delta;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1341 } else {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1342 // This allocation is large but the next ones are probably not
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1343 // so increase by the minimum.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1344 delta = delta + min_delta;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1345 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1346
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1347 assert_is_size_aligned(delta, Metaspace::commit_alignment());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1348
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1349 return delta;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1350 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1351
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1352 size_t MetaspaceGC::capacity_until_GC() {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1353 size_t value = (size_t)OrderAccess::load_ptr_acquire(&_capacity_until_GC);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1354 assert(value >= MetaspaceSize, "Not initialied properly?");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1355 return value;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1356 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1357
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1358 size_t MetaspaceGC::inc_capacity_until_GC(size_t v) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1359 assert_is_size_aligned(v, Metaspace::commit_alignment());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1360
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1361 return (size_t)Atomic::add_ptr(v, &_capacity_until_GC);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1362 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1363
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1364 size_t MetaspaceGC::dec_capacity_until_GC(size_t v) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1365 assert_is_size_aligned(v, Metaspace::commit_alignment());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1366
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1367 return (size_t)Atomic::add_ptr(-(intptr_t)v, &_capacity_until_GC);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1368 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1369
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1370 bool MetaspaceGC::can_expand(size_t word_size, bool is_class) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1371 // Check if the compressed class space is full.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1372 if (is_class && Metaspace::using_class_space()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1373 size_t class_committed = MetaspaceAux::committed_bytes(Metaspace::ClassType);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1374 if (class_committed + word_size * BytesPerWord > CompressedClassSpaceSize) {
11064
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
1375 return false;
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
1376 }
8790
7f0cb32dd233 8004241: NPG: Metaspace occupies more memory than specified by -XX:MaxMetaspaceSize option
mgerdin
parents: 8786
diff changeset
1377 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1378
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1379 // Check if the user has imposed a limit on the metaspace memory.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1380 size_t committed_bytes = MetaspaceAux::committed_bytes();
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1381 if (committed_bytes + word_size * BytesPerWord > MaxMetaspaceSize) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1382 return false;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1383 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1384
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1385 return true;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1386 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1387
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1388 size_t MetaspaceGC::allowed_expansion() {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1389 size_t committed_bytes = MetaspaceAux::committed_bytes();
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1390
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1391 size_t left_until_max = MaxMetaspaceSize - committed_bytes;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1392
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1393 // Always grant expansion if we are initiating the JVM,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1394 // or if the GC_locker is preventing GCs.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1395 if (!is_init_completed() || GC_locker::is_active_and_needs_gc()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1396 return left_until_max / BytesPerWord;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1397 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1398
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1399 size_t capacity_until_gc = capacity_until_GC();
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1400
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1401 if (capacity_until_gc <= committed_bytes) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1402 return 0;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1403 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1404
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1405 size_t left_until_GC = capacity_until_gc - committed_bytes;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1406 size_t left_to_commit = MIN2(left_until_GC, left_until_max);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1407
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1408 return left_to_commit / BytesPerWord;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1409 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1410
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1411 void MetaspaceGC::compute_new_size() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1412 assert(_shrink_factor <= 100, "invalid shrink factor");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1413 uint current_shrink_factor = _shrink_factor;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1414 _shrink_factor = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1415
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1416 const size_t used_after_gc = MetaspaceAux::allocated_capacity_bytes();
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1417 const size_t capacity_until_GC = MetaspaceGC::capacity_until_GC();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1418
8040
a83cd101fd62 8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
parents: 8007
diff changeset
1419 const double minimum_free_percentage = MinMetaspaceFreeRatio / 100.0;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1420 const double maximum_used_percentage = 1.0 - minimum_free_percentage;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1421
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1422 const double min_tmp = used_after_gc / maximum_used_percentage;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1423 size_t minimum_desired_capacity =
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1424 (size_t)MIN2(min_tmp, double(max_uintx));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1425 // Don't shrink less than the initial generation size
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1426 minimum_desired_capacity = MAX2(minimum_desired_capacity,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1427 MetaspaceSize);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1428
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1429 if (PrintGCDetails && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1430 gclog_or_tty->print_cr("\nMetaspaceGC::compute_new_size: ");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1431 gclog_or_tty->print_cr(" "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1432 " minimum_free_percentage: %6.2f"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1433 " maximum_used_percentage: %6.2f",
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1434 minimum_free_percentage,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1435 maximum_used_percentage);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1436 gclog_or_tty->print_cr(" "
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1437 " used_after_gc : %6.1fKB",
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1438 used_after_gc / (double) K);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1439 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1440
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1441
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1442 size_t shrink_bytes = 0;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1443 if (capacity_until_GC < minimum_desired_capacity) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1444 // If we have less capacity below the metaspace HWM, then
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1445 // increment the HWM.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1446 size_t expand_bytes = minimum_desired_capacity - capacity_until_GC;
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1447 expand_bytes = align_size_up(expand_bytes, Metaspace::commit_alignment());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1448 // Don't expand unless it's significant
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1449 if (expand_bytes >= MinMetaspaceExpansion) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1450 MetaspaceGC::inc_capacity_until_GC(expand_bytes);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1451 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1452 if (PrintGCDetails && Verbose) {
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1453 size_t new_capacity_until_GC = capacity_until_GC;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1454 gclog_or_tty->print_cr(" expanding:"
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1455 " minimum_desired_capacity: %6.1fKB"
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1456 " expand_bytes: %6.1fKB"
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1457 " MinMetaspaceExpansion: %6.1fKB"
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1458 " new metaspace HWM: %6.1fKB",
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1459 minimum_desired_capacity / (double) K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1460 expand_bytes / (double) K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1461 MinMetaspaceExpansion / (double) K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1462 new_capacity_until_GC / (double) K);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1463 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1464 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1465 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1466
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1467 // No expansion, now see if we want to shrink
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1468 // We would never want to shrink more than this
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1469 size_t max_shrink_bytes = capacity_until_GC - minimum_desired_capacity;
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1470 assert(max_shrink_bytes >= 0, err_msg("max_shrink_bytes " SIZE_FORMAT,
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1471 max_shrink_bytes));
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1472
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1473 // Should shrinking be considered?
8040
a83cd101fd62 8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
parents: 8007
diff changeset
1474 if (MaxMetaspaceFreeRatio < 100) {
a83cd101fd62 8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
parents: 8007
diff changeset
1475 const double maximum_free_percentage = MaxMetaspaceFreeRatio / 100.0;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1476 const double minimum_used_percentage = 1.0 - maximum_free_percentage;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1477 const double max_tmp = used_after_gc / minimum_used_percentage;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1478 size_t maximum_desired_capacity = (size_t)MIN2(max_tmp, double(max_uintx));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1479 maximum_desired_capacity = MAX2(maximum_desired_capacity,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1480 MetaspaceSize);
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1481 if (PrintGCDetails && Verbose) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1482 gclog_or_tty->print_cr(" "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1483 " maximum_free_percentage: %6.2f"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1484 " minimum_used_percentage: %6.2f",
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1485 maximum_free_percentage,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1486 minimum_used_percentage);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1487 gclog_or_tty->print_cr(" "
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1488 " minimum_desired_capacity: %6.1fKB"
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1489 " maximum_desired_capacity: %6.1fKB",
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1490 minimum_desired_capacity / (double) K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1491 maximum_desired_capacity / (double) K);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1492 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1493
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1494 assert(minimum_desired_capacity <= maximum_desired_capacity,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1495 "sanity check");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1496
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1497 if (capacity_until_GC > maximum_desired_capacity) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1498 // Capacity too large, compute shrinking size
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1499 shrink_bytes = capacity_until_GC - maximum_desired_capacity;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1500 // We don't want shrink all the way back to initSize if people call
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1501 // System.gc(), because some programs do that between "phases" and then
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1502 // we'd just have to grow the heap up again for the next phase. So we
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1503 // damp the shrinking: 0% on the first call, 10% on the second call, 40%
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1504 // on the third call, and 100% by the fourth call. But if we recompute
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1505 // size without shrinking, it goes back to 0%.
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1506 shrink_bytes = shrink_bytes / 100 * current_shrink_factor;
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1507
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1508 shrink_bytes = align_size_down(shrink_bytes, Metaspace::commit_alignment());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1509
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1510 assert(shrink_bytes <= max_shrink_bytes,
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1511 err_msg("invalid shrink size " SIZE_FORMAT " not <= " SIZE_FORMAT,
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1512 shrink_bytes, max_shrink_bytes));
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1513 if (current_shrink_factor == 0) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1514 _shrink_factor = 10;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1515 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1516 _shrink_factor = MIN2(current_shrink_factor * 4, (uint) 100);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1517 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1518 if (PrintGCDetails && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1519 gclog_or_tty->print_cr(" "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1520 " shrinking:"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1521 " initSize: %.1fK"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1522 " maximum_desired_capacity: %.1fK",
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1523 MetaspaceSize / (double) K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1524 maximum_desired_capacity / (double) K);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1525 gclog_or_tty->print_cr(" "
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1526 " shrink_bytes: %.1fK"
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1527 " current_shrink_factor: %d"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1528 " new shrink factor: %d"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1529 " MinMetaspaceExpansion: %.1fK",
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1530 shrink_bytes / (double) K,
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1531 current_shrink_factor,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1532 _shrink_factor,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1533 MinMetaspaceExpansion / (double) K);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1534 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1535 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1536 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1537
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1538 // Don't shrink unless it's significant
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1539 if (shrink_bytes >= MinMetaspaceExpansion &&
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1540 ((capacity_until_GC - shrink_bytes) >= MetaspaceSize)) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1541 MetaspaceGC::dec_capacity_until_GC(shrink_bytes);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1542 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1543 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1544
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1545 // Metadebug methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1546
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1547 void Metadebug::init_allocation_fail_alot_count() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1548 if (MetadataAllocationFailALot) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1549 _allocation_fail_alot_count =
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1550 1+(long)((double)MetadataAllocationFailALotInterval*os::random()/(max_jint+1.0));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1551 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1552 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1553
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1554 #ifdef ASSERT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1555 bool Metadebug::test_metadata_failure() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1556 if (MetadataAllocationFailALot &&
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1557 Threads::is_vm_complete()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1558 if (_allocation_fail_alot_count > 0) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1559 _allocation_fail_alot_count--;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1560 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1561 if (TraceMetadataChunkAllocation && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1562 gclog_or_tty->print_cr("Metadata allocation failing for "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1563 "MetadataAllocationFailALot");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1564 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1565 init_allocation_fail_alot_count();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1566 return true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1567 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1568 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1569 return false;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1570 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1571 #endif
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1572
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1573 // ChunkManager methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1574
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
1575 size_t ChunkManager::free_chunks_total_words() {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1576 return _free_chunks_total;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1577 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1578
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
1579 size_t ChunkManager::free_chunks_total_bytes() {
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
1580 return free_chunks_total_words() * BytesPerWord;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1581 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1582
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1583 size_t ChunkManager::free_chunks_count() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1584 #ifdef ASSERT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1585 if (!UseConcMarkSweepGC && !SpaceManager::expand_lock()->is_locked()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1586 MutexLockerEx cl(SpaceManager::expand_lock(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1587 Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1588 // This lock is only needed in debug because the verification
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1589 // of the _free_chunks_totals walks the list of free chunks
6969
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
1590 slow_locked_verify_free_chunks_count();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1591 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1592 #endif
6969
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
1593 return _free_chunks_count;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1594 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1595
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1596 void ChunkManager::locked_verify_free_chunks_total() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1597 assert_lock_strong(SpaceManager::expand_lock());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1598 assert(sum_free_chunks() == _free_chunks_total,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1599 err_msg("_free_chunks_total " SIZE_FORMAT " is not the"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1600 " same as sum " SIZE_FORMAT, _free_chunks_total,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1601 sum_free_chunks()));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1602 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1603
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1604 void ChunkManager::verify_free_chunks_total() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1605 MutexLockerEx cl(SpaceManager::expand_lock(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1606 Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1607 locked_verify_free_chunks_total();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1608 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1609
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1610 void ChunkManager::locked_verify_free_chunks_count() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1611 assert_lock_strong(SpaceManager::expand_lock());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1612 assert(sum_free_chunks_count() == _free_chunks_count,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1613 err_msg("_free_chunks_count " SIZE_FORMAT " is not the"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1614 " same as sum " SIZE_FORMAT, _free_chunks_count,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1615 sum_free_chunks_count()));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1616 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1617
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1618 void ChunkManager::verify_free_chunks_count() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1619 #ifdef ASSERT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1620 MutexLockerEx cl(SpaceManager::expand_lock(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1621 Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1622 locked_verify_free_chunks_count();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1623 #endif
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1624 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1625
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1626 void ChunkManager::verify() {
6969
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
1627 MutexLockerEx cl(SpaceManager::expand_lock(),
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
1628 Mutex::_no_safepoint_check_flag);
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
1629 locked_verify();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1630 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1631
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1632 void ChunkManager::locked_verify() {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1633 locked_verify_free_chunks_count();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1634 locked_verify_free_chunks_total();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1635 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1636
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1637 void ChunkManager::locked_print_free_chunks(outputStream* st) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1638 assert_lock_strong(SpaceManager::expand_lock());
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1639 st->print_cr("Free chunk total " SIZE_FORMAT " count " SIZE_FORMAT,
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1640 _free_chunks_total, _free_chunks_count);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1641 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1642
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1643 void ChunkManager::locked_print_sum_free_chunks(outputStream* st) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1644 assert_lock_strong(SpaceManager::expand_lock());
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1645 st->print_cr("Sum free chunk total " SIZE_FORMAT " count " SIZE_FORMAT,
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1646 sum_free_chunks(), sum_free_chunks_count());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1647 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1648 ChunkList* ChunkManager::free_chunks(ChunkIndex index) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1649 return &_free_chunks[index];
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1650 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1651
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1652 // These methods that sum the free chunk lists are used in printing
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1653 // methods that are used in product builds.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1654 size_t ChunkManager::sum_free_chunks() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1655 assert_lock_strong(SpaceManager::expand_lock());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1656 size_t result = 0;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1657 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1658 ChunkList* list = free_chunks(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1659
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1660 if (list == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1661 continue;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1662 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1663
10101
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
1664 result = result + list->count() * list->size();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1665 }
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1666 result = result + humongous_dictionary()->total_size();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1667 return result;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1668 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1669
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1670 size_t ChunkManager::sum_free_chunks_count() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1671 assert_lock_strong(SpaceManager::expand_lock());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1672 size_t count = 0;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1673 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1674 ChunkList* list = free_chunks(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1675 if (list == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1676 continue;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1677 }
10101
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
1678 count = count + list->count();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1679 }
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1680 count = count + humongous_dictionary()->total_free_blocks();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1681 return count;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1682 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1683
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1684 ChunkList* ChunkManager::find_free_chunks_list(size_t word_size) {
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1685 ChunkIndex index = list_index(word_size);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1686 assert(index < HumongousIndex, "No humongous list");
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1687 return free_chunks(index);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1688 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1689
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1690 Metachunk* ChunkManager::free_chunks_get(size_t word_size) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1691 assert_lock_strong(SpaceManager::expand_lock());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1692
6969
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
1693 slow_locked_verify();
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1694
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1695 Metachunk* chunk = NULL;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1696 if (list_index(word_size) != HumongousIndex) {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1697 ChunkList* free_list = find_free_chunks_list(word_size);
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1698 assert(free_list != NULL, "Sanity check");
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1699
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1700 chunk = free_list->head();
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1701
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1702 if (chunk == NULL) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1703 return NULL;
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1704 }
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1705
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1706 // Remove the chunk as the head of the list.
10101
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
1707 free_list->remove_chunk(chunk);
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1708
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1709 if (TraceMetadataChunkAllocation && Verbose) {
12240
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
1710 gclog_or_tty->print_cr("ChunkManager::free_chunks_get: free_list "
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
1711 PTR_FORMAT " head " PTR_FORMAT " size " SIZE_FORMAT,
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
1712 free_list, chunk, chunk->word_size());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1713 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1714 } else {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1715 chunk = humongous_dictionary()->get_chunk(
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1716 word_size,
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1717 FreeBlockDictionary<Metachunk>::atLeast);
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1718
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1719 if (chunk == NULL) {
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1720 return NULL;
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1721 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1722
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1723 if (TraceMetadataHumongousAllocation) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1724 size_t waste = chunk->word_size() - word_size;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1725 gclog_or_tty->print_cr("Free list allocate humongous chunk size "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1726 SIZE_FORMAT " for requested size " SIZE_FORMAT
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1727 " waste " SIZE_FORMAT,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1728 chunk->word_size(), word_size, waste);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1729 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1730 }
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1731
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1732 // Chunk is being removed from the chunks free list.
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
1733 dec_free_chunks_total(chunk->word_size());
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
1734
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1735 // Remove it from the links to this freelist
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1736 chunk->set_next(NULL);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1737 chunk->set_prev(NULL);
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1738 #ifdef ASSERT
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1739 // Chunk is no longer on any freelist. Setting to false make container_count_slow()
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1740 // work.
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
1741 chunk->set_is_tagged_free(false);
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
1742 #endif
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1743 chunk->container()->inc_container_count();
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1744
6969
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
1745 slow_locked_verify();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1746 return chunk;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1747 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1748
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1749 Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1750 assert_lock_strong(SpaceManager::expand_lock());
6969
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
1751 slow_locked_verify();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1752
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1753 // Take from the beginning of the list
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1754 Metachunk* chunk = free_chunks_get(word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1755 if (chunk == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1756 return NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1757 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1758
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1759 assert((word_size <= chunk->word_size()) ||
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1760 list_index(chunk->word_size() == HumongousIndex),
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1761 "Non-humongous variable sized chunk");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1762 if (TraceMetadataChunkAllocation) {
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1763 size_t list_count;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1764 if (list_index(word_size) < HumongousIndex) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1765 ChunkList* list = find_free_chunks_list(word_size);
10101
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
1766 list_count = list->count();
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1767 } else {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1768 list_count = humongous_dictionary()->total_count();
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1769 }
12240
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
1770 gclog_or_tty->print("ChunkManager::chunk_freelist_allocate: " PTR_FORMAT " chunk "
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
1771 PTR_FORMAT " size " SIZE_FORMAT " count " SIZE_FORMAT " ",
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
1772 this, chunk, chunk->word_size(), list_count);
8c5e6482cbfc 8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
stefank
parents: 12239
diff changeset
1773 locked_print_free_chunks(gclog_or_tty);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1774 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1775
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1776 return chunk;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1777 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1778
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1779 void ChunkManager::print_on(outputStream* out) const {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1780 if (PrintFLSStatistics != 0) {
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1781 const_cast<ChunkManager *>(this)->humongous_dictionary()->report_statistics();
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1782 }
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1783 }
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1784
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1785 // SpaceManager methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1786
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1787 void SpaceManager::get_initial_chunk_sizes(Metaspace::MetaspaceType type,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1788 size_t* chunk_word_size,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1789 size_t* class_chunk_word_size) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1790 switch (type) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1791 case Metaspace::BootMetaspaceType:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1792 *chunk_word_size = Metaspace::first_chunk_word_size();
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1793 *class_chunk_word_size = Metaspace::first_class_chunk_word_size();
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1794 break;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1795 case Metaspace::ROMetaspaceType:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1796 *chunk_word_size = SharedReadOnlySize / wordSize;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1797 *class_chunk_word_size = ClassSpecializedChunk;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1798 break;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1799 case Metaspace::ReadWriteMetaspaceType:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1800 *chunk_word_size = SharedReadWriteSize / wordSize;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1801 *class_chunk_word_size = ClassSpecializedChunk;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1802 break;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1803 case Metaspace::AnonymousMetaspaceType:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1804 case Metaspace::ReflectionMetaspaceType:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1805 *chunk_word_size = SpecializedChunk;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1806 *class_chunk_word_size = ClassSpecializedChunk;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1807 break;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1808 default:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1809 *chunk_word_size = SmallChunk;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1810 *class_chunk_word_size = ClassSmallChunk;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1811 break;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1812 }
8007
d9058e388631 8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents: 7447
diff changeset
1813 assert(*chunk_word_size != 0 && *class_chunk_word_size != 0,
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1814 err_msg("Initial chunks sizes bad: data " SIZE_FORMAT
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1815 " class " SIZE_FORMAT,
8007
d9058e388631 8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents: 7447
diff changeset
1816 *chunk_word_size, *class_chunk_word_size));
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1817 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1818
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1819 size_t SpaceManager::sum_free_in_chunks_in_use() const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1820 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1821 size_t free = 0;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1822 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1823 Metachunk* chunk = chunks_in_use(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1824 while (chunk != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1825 free += chunk->free_word_size();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1826 chunk = chunk->next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1827 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1828 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1829 return free;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1830 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1831
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1832 size_t SpaceManager::sum_waste_in_chunks_in_use() const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1833 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1834 size_t result = 0;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1835 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1836 result += sum_waste_in_chunks_in_use(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1837 }
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1838
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1839 return result;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1840 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1841
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1842 size_t SpaceManager::sum_waste_in_chunks_in_use(ChunkIndex index) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1843 size_t result = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1844 Metachunk* chunk = chunks_in_use(index);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1845 // Count the free space in all the chunk but not the
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1846 // current chunk from which allocations are still being done.
11064
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
1847 while (chunk != NULL) {
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
1848 if (chunk != current_chunk()) {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1849 result += chunk->free_word_size();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1850 }
11064
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
1851 chunk = chunk->next();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1852 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1853 return result;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1854 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1855
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1856 size_t SpaceManager::sum_capacity_in_chunks_in_use() const {
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1857 // For CMS use "allocated_chunks_words()" which does not need the
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1858 // Metaspace lock. For the other collectors sum over the
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1859 // lists. Use both methods as a check that "allocated_chunks_words()"
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1860 // is correct. That is, sum_capacity_in_chunks() is too expensive
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1861 // to use in the product and allocated_chunks_words() should be used
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1862 // but allow for checking that allocated_chunks_words() returns the same
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1863 // value as sum_capacity_in_chunks_in_use() which is the definitive
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1864 // answer.
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1865 if (UseConcMarkSweepGC) {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1866 return allocated_chunks_words();
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1867 } else {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1868 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag);
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1869 size_t sum = 0;
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1870 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1871 Metachunk* chunk = chunks_in_use(i);
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1872 while (chunk != NULL) {
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
1873 sum += chunk->word_size();
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1874 chunk = chunk->next();
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1875 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1876 }
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
1877 return sum;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1878 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1879 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1880
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1881 size_t SpaceManager::sum_count_in_chunks_in_use() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1882 size_t count = 0;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1883 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1884 count = count + sum_count_in_chunks_in_use(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1885 }
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1886
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1887 return count;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1888 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1889
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1890 size_t SpaceManager::sum_count_in_chunks_in_use(ChunkIndex i) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1891 size_t count = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1892 Metachunk* chunk = chunks_in_use(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1893 while (chunk != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1894 count++;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1895 chunk = chunk->next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1896 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1897 return count;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1898 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1899
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1900
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1901 size_t SpaceManager::sum_used_in_chunks_in_use() const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1902 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1903 size_t used = 0;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1904 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1905 Metachunk* chunk = chunks_in_use(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1906 while (chunk != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1907 used += chunk->used_word_size();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1908 chunk = chunk->next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1909 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1910 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1911 return used;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1912 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1913
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1914 void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1915
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1916 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1917 Metachunk* chunk = chunks_in_use(i);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1918 st->print("SpaceManager: %s " PTR_FORMAT,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1919 chunk_size_name(i), chunk);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1920 if (chunk != NULL) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1921 st->print_cr(" free " SIZE_FORMAT,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1922 chunk->free_word_size());
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1923 } else {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1924 st->print_cr("");
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1925 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1926 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1927
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1928 chunk_manager()->locked_print_free_chunks(st);
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
1929 chunk_manager()->locked_print_sum_free_chunks(st);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1930 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1931
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1932 size_t SpaceManager::calc_chunk_size(size_t word_size) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1933
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1934 // Decide between a small chunk and a medium chunk. Up to
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1935 // _small_chunk_limit small chunks can be allocated but
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1936 // once a medium chunk has been allocated, no more small
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1937 // chunks will be allocated.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1938 size_t chunk_word_size;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1939 if (chunks_in_use(MediumIndex) == NULL &&
11064
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
1940 sum_count_in_chunks_in_use(SmallIndex) < _small_chunk_limit) {
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1941 chunk_word_size = (size_t) small_chunk_size();
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1942 if (word_size + Metachunk::overhead() > small_chunk_size()) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1943 chunk_word_size = medium_chunk_size();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1944 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1945 } else {
7446
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jmasa
parents: 7435
diff changeset
1946 chunk_word_size = medium_chunk_size();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1947 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1948
12979
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1949 // Might still need a humongous chunk. Enforce
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1950 // humongous allocations sizes to be aligned up to
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1951 // the smallest chunk size.
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1952 size_t if_humongous_sized_chunk =
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1953 align_size_up(word_size + Metachunk::overhead(),
12979
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
1954 smallest_chunk_size());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1955 chunk_word_size =
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1956 MAX2((size_t) chunk_word_size, if_humongous_sized_chunk);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1957
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1958 assert(!SpaceManager::is_humongous(word_size) ||
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1959 chunk_word_size == if_humongous_sized_chunk,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1960 err_msg("Size calculation is wrong, word_size " SIZE_FORMAT
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1961 " chunk_word_size " SIZE_FORMAT,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1962 word_size, chunk_word_size));
6725
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coleenp
parents:
diff changeset
1963 if (TraceMetadataHumongousAllocation &&
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1964 SpaceManager::is_humongous(word_size)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1965 gclog_or_tty->print_cr("Metadata humongous allocation:");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1966 gclog_or_tty->print_cr(" word_size " PTR_FORMAT, word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1967 gclog_or_tty->print_cr(" chunk_word_size " PTR_FORMAT,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1968 chunk_word_size);
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1969 gclog_or_tty->print_cr(" chunk overhead " PTR_FORMAT,
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1970 Metachunk::overhead());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1971 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1972 return chunk_word_size;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1973 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1974
12839
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1975 void SpaceManager::track_metaspace_memory_usage() {
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1976 if (is_init_completed()) {
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1977 if (is_class()) {
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1978 MemoryService::track_compressed_class_memory_usage();
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1979 }
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1980 MemoryService::track_metaspace_memory_usage();
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1981 }
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1982 }
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
1983
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
1984 MetaWord* SpaceManager::grow_and_allocate(size_t word_size) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1985 assert(vs_list()->current_virtual_space() != NULL,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1986 "Should have been set");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1987 assert(current_chunk() == NULL ||
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1988 current_chunk()->allocate(word_size) == NULL,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1989 "Don't need to expand");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1990 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1991
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1992 if (TraceMetadataChunkAllocation && Verbose) {
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1993 size_t words_left = 0;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1994 size_t words_used = 0;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1995 if (current_chunk() != NULL) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1996 words_left = current_chunk()->free_word_size();
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1997 words_used = current_chunk()->used_word_size();
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
1998 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
1999 gclog_or_tty->print_cr("SpaceManager::grow_and_allocate for " SIZE_FORMAT
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2000 " words " SIZE_FORMAT " words used " SIZE_FORMAT
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2001 " words left",
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2002 word_size, words_used, words_left);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2003 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2004
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2005 // Get another chunk out of the virtual space
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2006 size_t grow_chunks_by_words = calc_chunk_size(word_size);
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2007 Metachunk* next = get_new_chunk(word_size, grow_chunks_by_words);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2008
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2009 MetaWord* mem = NULL;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2010
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2011 // If a chunk was available, add it to the in-use chunk list
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2012 // and do an allocation from it.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2013 if (next != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2014 // Add to this manager's list of chunks in use.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2015 add_chunk(next, false);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2016 mem = next->allocate(word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2017 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2018
12839
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
2019 // Track metaspace memory usage statistic.
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
2020 track_metaspace_memory_usage();
a6414751d537 8025996: Track metaspace usage when metaspace is expanded
stefank
parents: 12838
diff changeset
2021
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2022 return mem;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2023 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2024
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2025 void SpaceManager::print_on(outputStream* st) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2026
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2027 for (ChunkIndex i = ZeroIndex;
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2028 i < NumberOfInUseLists ;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2029 i = next_chunk_index(i) ) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2030 st->print_cr(" chunks_in_use " PTR_FORMAT " chunk size " PTR_FORMAT,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2031 chunks_in_use(i),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2032 chunks_in_use(i) == NULL ? 0 : chunks_in_use(i)->word_size());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2033 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2034 st->print_cr(" waste: Small " SIZE_FORMAT " Medium " SIZE_FORMAT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2035 " Humongous " SIZE_FORMAT,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2036 sum_waste_in_chunks_in_use(SmallIndex),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2037 sum_waste_in_chunks_in_use(MediumIndex),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2038 sum_waste_in_chunks_in_use(HumongousIndex));
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2039 // block free lists
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2040 if (block_freelists() != NULL) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2041 st->print_cr("total in block free lists " SIZE_FORMAT,
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2042 block_freelists()->total_size());
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2043 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2044 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2045
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2046 SpaceManager::SpaceManager(Metaspace::MetadataType mdtype,
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2047 Mutex* lock) :
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2048 _mdtype(mdtype),
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2049 _allocated_blocks_words(0),
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2050 _allocated_chunks_words(0),
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2051 _allocated_chunks_count(0),
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2052 _lock(lock)
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2053 {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2054 initialize();
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2055 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2056
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2057 void SpaceManager::inc_size_metrics(size_t words) {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2058 assert_lock_strong(SpaceManager::expand_lock());
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2059 // Total of allocated Metachunks and allocated Metachunks count
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2060 // for each SpaceManager
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2061 _allocated_chunks_words = _allocated_chunks_words + words;
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2062 _allocated_chunks_count++;
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2063 // Global total of capacity in allocated Metachunks
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2064 MetaspaceAux::inc_capacity(mdtype(), words);
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2065 // Global total of allocated Metablocks.
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2066 // used_words_slow() includes the overhead in each
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2067 // Metachunk so include it in the used when the
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2068 // Metachunk is first added (so only added once per
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2069 // Metachunk).
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2070 MetaspaceAux::inc_used(mdtype(), Metachunk::overhead());
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2071 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2072
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2073 void SpaceManager::inc_used_metrics(size_t words) {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2074 // Add to the per SpaceManager total
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2075 Atomic::add_ptr(words, &_allocated_blocks_words);
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2076 // Add to the global total
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2077 MetaspaceAux::inc_used(mdtype(), words);
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2078 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2079
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2080 void SpaceManager::dec_total_from_size_metrics() {
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2081 MetaspaceAux::dec_capacity(mdtype(), allocated_chunks_words());
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2082 MetaspaceAux::dec_used(mdtype(), allocated_blocks_words());
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2083 // Also deduct the overhead per Metachunk
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2084 MetaspaceAux::dec_used(mdtype(), allocated_chunks_count() * Metachunk::overhead());
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2085 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2086
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2087 void SpaceManager::initialize() {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2088 Metadebug::init_allocation_fail_alot_count();
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2089 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2090 _chunks_in_use[i] = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2091 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2092 _current_chunk = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2093 if (TraceMetadataChunkAllocation && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2094 gclog_or_tty->print_cr("SpaceManager(): " PTR_FORMAT, this);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2095 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2096 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2097
10101
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2098 void ChunkManager::return_chunks(ChunkIndex index, Metachunk* chunks) {
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2099 if (chunks == NULL) {
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2100 return;
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2101 }
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2102 ChunkList* list = free_chunks(index);
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2103 assert(list->size() == chunks->word_size(), "Mismatch in chunk sizes");
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2104 assert_lock_strong(SpaceManager::expand_lock());
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2105 Metachunk* cur = chunks;
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2106
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
2107 // This returns chunks one at a time. If a new
10101
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2108 // class List can be created that is a base class
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2109 // of FreeList then something like FreeList::prepend()
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2110 // can be used in place of this loop
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2111 while (cur != NULL) {
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
2112 assert(cur->container() != NULL, "Container should have been set");
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
2113 cur->container()->dec_container_count();
10101
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2114 // Capture the next link before it is changed
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2115 // by the call to return_chunk_at_head();
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2116 Metachunk* next = cur->next();
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
2117 DEBUG_ONLY(cur->set_is_tagged_free(true);)
10101
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2118 list->return_chunk_at_head(cur);
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2119 cur = next;
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2120 }
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2121 }
df254344edf1 8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
parents: 8813
diff changeset
2122
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2123 SpaceManager::~SpaceManager() {
8784
79af1312fc2c 8005602: NPG: classunloading does not happen while CMS GC with -XX:+CMSClassUnloadingEnabled is used
mgerdin
parents: 8738
diff changeset
2124 // This call this->_lock which can't be done while holding expand_lock()
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2125 assert(sum_capacity_in_chunks_in_use() == allocated_chunks_words(),
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2126 err_msg("sum_capacity_in_chunks_in_use() " SIZE_FORMAT
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2127 " allocated_chunks_words() " SIZE_FORMAT,
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2128 sum_capacity_in_chunks_in_use(), allocated_chunks_words()));
8784
79af1312fc2c 8005602: NPG: classunloading does not happen while CMS GC with -XX:+CMSClassUnloadingEnabled is used
mgerdin
parents: 8738
diff changeset
2129
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2130 MutexLockerEx fcl(SpaceManager::expand_lock(),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2131 Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2132
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2133 chunk_manager()->slow_locked_verify();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2134
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2135 dec_total_from_size_metrics();
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2136
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2137 if (TraceMetadataChunkAllocation && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2138 gclog_or_tty->print_cr("~SpaceManager(): " PTR_FORMAT, this);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2139 locked_print_chunks_in_use_on(gclog_or_tty);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2140 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2141
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
2142 // Do not mangle freed Metachunks. The chunk size inside Metachunks
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
2143 // is during the freeing of a VirtualSpaceNodes.
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6969
diff changeset
2144
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2145 // Have to update before the chunks_in_use lists are emptied
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2146 // below.
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2147 chunk_manager()->inc_free_chunks_total(allocated_chunks_words(),
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2148 sum_count_in_chunks_in_use());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2149
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2150 // Add all the chunks in use by this space manager
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2151 // to the global list of free chunks.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2152
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2153 // Follow each list of chunks-in-use and add them to the
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2154 // free lists. Each list is NULL terminated.
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2155
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2156 for (ChunkIndex i = ZeroIndex; i < HumongousIndex; i = next_chunk_index(i)) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2157 if (TraceMetadataChunkAllocation && Verbose) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2158 gclog_or_tty->print_cr("returned %d %s chunks to freelist",
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2159 sum_count_in_chunks_in_use(i),
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2160 chunk_size_name(i));
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2161 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2162 Metachunk* chunks = chunks_in_use(i);
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2163 chunk_manager()->return_chunks(i, chunks);
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2164 set_chunks_in_use(i, NULL);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2165 if (TraceMetadataChunkAllocation && Verbose) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2166 gclog_or_tty->print_cr("updated freelist count %d %s",
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2167 chunk_manager()->free_chunks(i)->count(),
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2168 chunk_size_name(i));
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2169 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2170 assert(i != HumongousIndex, "Humongous chunks are handled explicitly later");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2171 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2172
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2173 // The medium chunk case may be optimized by passing the head and
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2174 // tail of the medium chunk list to add_at_head(). The tail is often
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2175 // the current chunk but there are probably exceptions.
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2176
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2177 // Humongous chunks
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2178 if (TraceMetadataChunkAllocation && Verbose) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2179 gclog_or_tty->print_cr("returned %d %s humongous chunks to dictionary",
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2180 sum_count_in_chunks_in_use(HumongousIndex),
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2181 chunk_size_name(HumongousIndex));
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2182 gclog_or_tty->print("Humongous chunk dictionary: ");
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2183 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2184 // Humongous chunks are never the current chunk.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2185 Metachunk* humongous_chunks = chunks_in_use(HumongousIndex);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2186
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2187 while (humongous_chunks != NULL) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2188 #ifdef ASSERT
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
2189 humongous_chunks->set_is_tagged_free(true);
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2190 #endif
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2191 if (TraceMetadataChunkAllocation && Verbose) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2192 gclog_or_tty->print(PTR_FORMAT " (" SIZE_FORMAT ") ",
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2193 humongous_chunks,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2194 humongous_chunks->word_size());
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2195 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2196 assert(humongous_chunks->word_size() == (size_t)
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2197 align_size_up(humongous_chunks->word_size(),
12979
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
2198 smallest_chunk_size()),
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2199 err_msg("Humongous chunk size is wrong: word size " SIZE_FORMAT
8007
d9058e388631 8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents: 7447
diff changeset
2200 " granularity %d",
12979
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
2201 humongous_chunks->word_size(), smallest_chunk_size()));
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2202 Metachunk* next_humongous_chunks = humongous_chunks->next();
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
2203 humongous_chunks->container()->dec_container_count();
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2204 chunk_manager()->humongous_dictionary()->return_chunk(humongous_chunks);
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2205 humongous_chunks = next_humongous_chunks;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2206 }
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2207 if (TraceMetadataChunkAllocation && Verbose) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2208 gclog_or_tty->print_cr("");
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2209 gclog_or_tty->print_cr("updated dictionary count %d %s",
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2210 chunk_manager()->humongous_dictionary()->total_count(),
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2211 chunk_size_name(HumongousIndex));
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2212 }
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2213 chunk_manager()->slow_locked_verify();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2214 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2215
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2216 const char* SpaceManager::chunk_size_name(ChunkIndex index) const {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2217 switch (index) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2218 case SpecializedIndex:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2219 return "Specialized";
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2220 case SmallIndex:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2221 return "Small";
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2222 case MediumIndex:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2223 return "Medium";
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2224 case HumongousIndex:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2225 return "Humongous";
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2226 default:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2227 return NULL;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2228 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2229 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2230
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2231 ChunkIndex ChunkManager::list_index(size_t size) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2232 switch (size) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2233 case SpecializedChunk:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2234 assert(SpecializedChunk == ClassSpecializedChunk,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2235 "Need branch for ClassSpecializedChunk");
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2236 return SpecializedIndex;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2237 case SmallChunk:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2238 case ClassSmallChunk:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2239 return SmallIndex;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2240 case MediumChunk:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2241 case ClassMediumChunk:
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2242 return MediumIndex;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2243 default:
7447
1de1b145f6bc 8005486: NPG: Incorrect assertion in ChunkManager::list_index()
jmasa
parents: 7446
diff changeset
2244 assert(size > MediumChunk || size > ClassMediumChunk,
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2245 "Not a humongous chunk");
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2246 return HumongousIndex;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2247 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2248 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2249
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2250 void SpaceManager::deallocate(MetaWord* p, size_t word_size) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2251 assert_lock_strong(_lock);
11966
83ca9dc4564d 8019845: Memory leak during class redefinition
fparain
parents: 11065
diff changeset
2252 size_t raw_word_size = get_raw_word_size(word_size);
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2253 size_t min_size = TreeChunk<Metablock, FreeList>::min_size();
11966
83ca9dc4564d 8019845: Memory leak during class redefinition
fparain
parents: 11065
diff changeset
2254 assert(raw_word_size >= min_size,
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2255 err_msg("Should not deallocate dark matter " SIZE_FORMAT "<" SIZE_FORMAT, word_size, min_size));
11966
83ca9dc4564d 8019845: Memory leak during class redefinition
fparain
parents: 11065
diff changeset
2256 block_freelists()->return_block(p, raw_word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2257 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2258
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2259 // Adds a chunk to the list of chunks in use.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2260 void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2261
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2262 assert(new_chunk != NULL, "Should not be NULL");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2263 assert(new_chunk->next() == NULL, "Should not be on a list");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2264
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2265 new_chunk->reset_empty();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2266
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2267 // Find the correct list and and set the current
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2268 // chunk for that list.
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2269 ChunkIndex index = ChunkManager::list_index(new_chunk->word_size());
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2270
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2271 if (index != HumongousIndex) {
12231
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2272 retire_current_chunk();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2273 set_current_chunk(new_chunk);
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2274 new_chunk->set_next(chunks_in_use(index));
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2275 set_chunks_in_use(index, new_chunk);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2276 } else {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2277 // For null class loader data and DumpSharedSpaces, the first chunk isn't
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2278 // small, so small will be null. Link this first chunk as the current
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2279 // chunk.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2280 if (make_current) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2281 // Set as the current chunk but otherwise treat as a humongous chunk.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2282 set_current_chunk(new_chunk);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2283 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2284 // Link at head. The _current_chunk only points to a humongous chunk for
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2285 // the null class loader metaspace (class and data virtual space managers)
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2286 // any humongous chunks so will not point to the tail
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2287 // of the humongous chunks list.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2288 new_chunk->set_next(chunks_in_use(HumongousIndex));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2289 set_chunks_in_use(HumongousIndex, new_chunk);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2290
7447
1de1b145f6bc 8005486: NPG: Incorrect assertion in ChunkManager::list_index()
jmasa
parents: 7446
diff changeset
2291 assert(new_chunk->word_size() > medium_chunk_size(), "List inconsistency");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2292 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2293
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2294 // Add to the running sum of capacity
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2295 inc_size_metrics(new_chunk->word_size());
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2296
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2297 assert(new_chunk->is_empty(), "Not ready for reuse");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2298 if (TraceMetadataChunkAllocation && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2299 gclog_or_tty->print("SpaceManager::add_chunk: %d) ",
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2300 sum_count_in_chunks_in_use());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2301 new_chunk->print_on(gclog_or_tty);
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2302 chunk_manager()->locked_print_free_chunks(gclog_or_tty);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2303 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2304 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2305
12231
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2306 void SpaceManager::retire_current_chunk() {
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2307 if (current_chunk() != NULL) {
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2308 size_t remaining_words = current_chunk()->free_word_size();
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2309 if (remaining_words >= TreeChunk<Metablock, FreeList>::min_size()) {
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2310 block_freelists()->return_block(current_chunk()->allocate(remaining_words), remaining_words);
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2311 inc_used_metrics(remaining_words);
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2312 }
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2313 }
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2314 }
24e87613ee58 8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents: 12226
diff changeset
2315
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2316 Metachunk* SpaceManager::get_new_chunk(size_t word_size,
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2317 size_t grow_chunks_by_words) {
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2318 // Get a chunk from the chunk freelist
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2319 Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words);
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2320
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2321 if (next == NULL) {
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2322 next = vs_list()->get_new_chunk(word_size,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2323 grow_chunks_by_words,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2324 medium_chunk_bunch());
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2325 }
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2326
12239
8227700da288 8024751: Fix bugs in TraceMetadata
stefank
parents: 12237
diff changeset
2327 if (TraceMetadataHumongousAllocation && next != NULL &&
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2328 SpaceManager::is_humongous(next->word_size())) {
12239
8227700da288 8024751: Fix bugs in TraceMetadata
stefank
parents: 12237
diff changeset
2329 gclog_or_tty->print_cr(" new humongous chunk word size "
8227700da288 8024751: Fix bugs in TraceMetadata
stefank
parents: 12237
diff changeset
2330 PTR_FORMAT, next->word_size());
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2331 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2332
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2333 return next;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2334 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2335
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2336 MetaWord* SpaceManager::allocate(size_t word_size) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2337 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2338
10376
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
2339 size_t raw_word_size = get_raw_word_size(word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2340 BlockFreelist* fl = block_freelists();
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2341 MetaWord* p = NULL;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2342 // Allocation from the dictionary is expensive in the sense that
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2343 // the dictionary has to be searched for a size. Don't allocate
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2344 // from the dictionary until it starts to get fat. Is this
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2345 // a reasonable policy? Maybe an skinny dictionary is fast enough
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2346 // for allocations. Do some profiling. JJJ
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2347 if (fl->total_size() > allocation_from_dictionary_limit) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2348 p = fl->get_block(raw_word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2349 }
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2350 if (p == NULL) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2351 p = allocate_work(raw_word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2352 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2353
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2354 return p;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2355 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2356
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2357 // Returns the address of spaced allocated for "word_size".
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2358 // This methods does not know about blocks (Metablocks)
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2359 MetaWord* SpaceManager::allocate_work(size_t word_size) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2360 assert_lock_strong(_lock);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2361 #ifdef ASSERT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2362 if (Metadebug::test_metadata_failure()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2363 return NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2364 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2365 #endif
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2366 // Is there space in the current chunk?
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2367 MetaWord* result = NULL;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2368
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2369 // For DumpSharedSpaces, only allocate out of the current chunk which is
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2370 // never null because we gave it the size we wanted. Caller reports out
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2371 // of memory if this returns null.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2372 if (DumpSharedSpaces) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2373 assert(current_chunk() != NULL, "should never happen");
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2374 inc_used_metrics(word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2375 return current_chunk()->allocate(word_size); // caller handles null result
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2376 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2377
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2378 if (current_chunk() != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2379 result = current_chunk()->allocate(word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2380 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2381
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2382 if (result == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2383 result = grow_and_allocate(word_size);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2384 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2385
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2386 if (result != NULL) {
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2387 inc_used_metrics(word_size);
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2388 assert(result != (MetaWord*) chunks_in_use(MediumIndex),
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2389 "Head of the list is being allocated");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2390 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2391
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2392 return result;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2393 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2394
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2395 void SpaceManager::verify() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2396 // If there are blocks in the dictionary, then
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2397 // verfication of chunks does not work since
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2398 // being in the dictionary alters a chunk.
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2399 if (block_freelists()->total_size() == 0) {
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2400 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2401 Metachunk* curr = chunks_in_use(i);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2402 while (curr != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2403 curr->verify();
7208
eade6b2e4782 8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents: 7187
diff changeset
2404 verify_chunk_size(curr);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2405 curr = curr->next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2406 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2407 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2408 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2409 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2410
7208
eade6b2e4782 8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents: 7187
diff changeset
2411 void SpaceManager::verify_chunk_size(Metachunk* chunk) {
eade6b2e4782 8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents: 7187
diff changeset
2412 assert(is_humongous(chunk->word_size()) ||
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2413 chunk->word_size() == medium_chunk_size() ||
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2414 chunk->word_size() == small_chunk_size() ||
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2415 chunk->word_size() == specialized_chunk_size(),
7208
eade6b2e4782 8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents: 7187
diff changeset
2416 "Chunk size is wrong");
eade6b2e4782 8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents: 7187
diff changeset
2417 return;
eade6b2e4782 8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents: 7187
diff changeset
2418 }
eade6b2e4782 8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents: 7187
diff changeset
2419
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2420 #ifdef ASSERT
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2421 void SpaceManager::verify_allocated_blocks_words() {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2422 // Verification is only guaranteed at a safepoint.
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2423 assert(SafepointSynchronize::is_at_safepoint() || !Universe::is_fully_initialized(),
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2424 "Verification can fail if the applications is running");
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2425 assert(allocated_blocks_words() == sum_used_in_chunks_in_use(),
8007
d9058e388631 8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents: 7447
diff changeset
2426 err_msg("allocation total is not consistent " SIZE_FORMAT
d9058e388631 8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents: 7447
diff changeset
2427 " vs " SIZE_FORMAT,
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2428 allocated_blocks_words(), sum_used_in_chunks_in_use()));
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2429 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2430
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2431 #endif
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2432
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2433 void SpaceManager::dump(outputStream* const out) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2434 size_t curr_total = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2435 size_t waste = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2436 uint i = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2437 size_t used = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2438 size_t capacity = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2439
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2440 // Add up statistics for all chunks in this SpaceManager.
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2441 for (ChunkIndex index = ZeroIndex;
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2442 index < NumberOfInUseLists;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2443 index = next_chunk_index(index)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2444 for (Metachunk* curr = chunks_in_use(index);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2445 curr != NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2446 curr = curr->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2447 out->print("%d) ", i++);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2448 curr->print_on(out);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2449 curr_total += curr->word_size();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2450 used += curr->used_word_size();
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
2451 capacity += curr->word_size();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2452 waste += curr->free_word_size() + curr->overhead();;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2453 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2454 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2455
12239
8227700da288 8024751: Fix bugs in TraceMetadata
stefank
parents: 12237
diff changeset
2456 if (TraceMetadataChunkAllocation && Verbose) {
8227700da288 8024751: Fix bugs in TraceMetadata
stefank
parents: 12237
diff changeset
2457 block_freelists()->print_on(out);
8227700da288 8024751: Fix bugs in TraceMetadata
stefank
parents: 12237
diff changeset
2458 }
8227700da288 8024751: Fix bugs in TraceMetadata
stefank
parents: 12237
diff changeset
2459
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2460 size_t free = current_chunk() == NULL ? 0 : current_chunk()->free_word_size();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2461 // Free space isn't wasted.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2462 waste -= free;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2463
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2464 out->print_cr("total of all chunks " SIZE_FORMAT " used " SIZE_FORMAT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2465 " free " SIZE_FORMAT " capacity " SIZE_FORMAT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2466 " waste " SIZE_FORMAT, curr_total, used, free, capacity, waste);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2467 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2468
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6969
diff changeset
2469 #ifndef PRODUCT
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2470 void SpaceManager::mangle_freed_chunks() {
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2471 for (ChunkIndex index = ZeroIndex;
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
2472 index < NumberOfInUseLists;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2473 index = next_chunk_index(index)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2474 for (Metachunk* curr = chunks_in_use(index);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2475 curr != NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2476 curr = curr->next()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2477 curr->mangle();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2478 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2479 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2480 }
7185
90273fc0a981 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 6969
diff changeset
2481 #endif // PRODUCT
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2482
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2483 // MetaspaceAux
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2484
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2485
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2486 size_t MetaspaceAux::_allocated_capacity_words[] = {0, 0};
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2487 size_t MetaspaceAux::_allocated_used_words[] = {0, 0};
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2488
12063
1a8fb39bdbc4 8014659: NPG: performance counters for compressed klass space
ehelin
parents: 12056
diff changeset
2489 size_t MetaspaceAux::free_bytes(Metaspace::MetadataType mdtype) {
1a8fb39bdbc4 8014659: NPG: performance counters for compressed klass space
ehelin
parents: 12056
diff changeset
2490 VirtualSpaceList* list = Metaspace::get_space_list(mdtype);
1a8fb39bdbc4 8014659: NPG: performance counters for compressed klass space
ehelin
parents: 12056
diff changeset
2491 return list == NULL ? 0 : list->free_bytes();
1a8fb39bdbc4 8014659: NPG: performance counters for compressed klass space
ehelin
parents: 12056
diff changeset
2492 }
1a8fb39bdbc4 8014659: NPG: performance counters for compressed klass space
ehelin
parents: 12056
diff changeset
2493
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2494 size_t MetaspaceAux::free_bytes() {
12063
1a8fb39bdbc4 8014659: NPG: performance counters for compressed klass space
ehelin
parents: 12056
diff changeset
2495 return free_bytes(Metaspace::ClassType) + free_bytes(Metaspace::NonClassType);
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2496 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2497
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2498 void MetaspaceAux::dec_capacity(Metaspace::MetadataType mdtype, size_t words) {
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2499 assert_lock_strong(SpaceManager::expand_lock());
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2500 assert(words <= allocated_capacity_words(mdtype),
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2501 err_msg("About to decrement below 0: words " SIZE_FORMAT
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2502 " is greater than _allocated_capacity_words[%u] " SIZE_FORMAT,
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2503 words, mdtype, allocated_capacity_words(mdtype)));
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2504 _allocated_capacity_words[mdtype] -= words;
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2505 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2506
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2507 void MetaspaceAux::inc_capacity(Metaspace::MetadataType mdtype, size_t words) {
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2508 assert_lock_strong(SpaceManager::expand_lock());
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2509 // Needs to be atomic
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2510 _allocated_capacity_words[mdtype] += words;
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2511 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2512
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2513 void MetaspaceAux::dec_used(Metaspace::MetadataType mdtype, size_t words) {
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2514 assert(words <= allocated_used_words(mdtype),
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2515 err_msg("About to decrement below 0: words " SIZE_FORMAT
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2516 " is greater than _allocated_used_words[%u] " SIZE_FORMAT,
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2517 words, mdtype, allocated_used_words(mdtype)));
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2518 // For CMS deallocation of the Metaspaces occurs during the
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2519 // sweep which is a concurrent phase. Protection by the expand_lock()
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2520 // is not enough since allocation is on a per Metaspace basis
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2521 // and protected by the Metaspace lock.
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2522 jlong minus_words = (jlong) - (jlong) words;
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2523 Atomic::add_ptr(minus_words, &_allocated_used_words[mdtype]);
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2524 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2525
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2526 void MetaspaceAux::inc_used(Metaspace::MetadataType mdtype, size_t words) {
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2527 // _allocated_used_words tracks allocations for
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2528 // each piece of metadata. Those allocations are
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2529 // generally done concurrently by different application
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2530 // threads so must be done atomically.
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2531 Atomic::add_ptr(words, &_allocated_used_words[mdtype]);
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2532 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2533
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2534 size_t MetaspaceAux::used_bytes_slow(Metaspace::MetadataType mdtype) {
6730
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2535 size_t used = 0;
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2536 ClassLoaderDataGraphMetaspaceIterator iter;
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2537 while (iter.repeat()) {
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2538 Metaspace* msp = iter.get_next();
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2539 // Sum allocated_blocks_words for each metaspace
6730
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2540 if (msp != NULL) {
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2541 used += msp->used_words_slow(mdtype);
6730
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2542 }
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2543 }
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2544 return used * BytesPerWord;
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2545 }
5d2156bcb78b 7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents: 6726
diff changeset
2546
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2547 size_t MetaspaceAux::free_bytes_slow(Metaspace::MetadataType mdtype) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2548 size_t free = 0;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2549 ClassLoaderDataGraphMetaspaceIterator iter;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2550 while (iter.repeat()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2551 Metaspace* msp = iter.get_next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2552 if (msp != NULL) {
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2553 free += msp->free_words_slow(mdtype);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2554 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2555 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2556 return free * BytesPerWord;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2557 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2558
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2559 size_t MetaspaceAux::capacity_bytes_slow(Metaspace::MetadataType mdtype) {
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2560 if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2561 return 0;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2562 }
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2563 // Don't count the space in the freelists. That space will be
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2564 // added to the capacity calculation as needed.
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2565 size_t capacity = 0;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2566 ClassLoaderDataGraphMetaspaceIterator iter;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2567 while (iter.repeat()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2568 Metaspace* msp = iter.get_next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2569 if (msp != NULL) {
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2570 capacity += msp->capacity_words_slow(mdtype);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2571 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2572 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2573 return capacity * BytesPerWord;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2574 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2575
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2576 size_t MetaspaceAux::capacity_bytes_slow() {
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2577 #ifdef PRODUCT
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2578 // Use allocated_capacity_bytes() in PRODUCT instead of this function.
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2579 guarantee(false, "Should not call capacity_bytes_slow() in the PRODUCT");
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2580 #endif
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2581 size_t class_capacity = capacity_bytes_slow(Metaspace::ClassType);
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2582 size_t non_class_capacity = capacity_bytes_slow(Metaspace::NonClassType);
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2583 assert(allocated_capacity_bytes() == class_capacity + non_class_capacity,
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2584 err_msg("bad accounting: allocated_capacity_bytes() " SIZE_FORMAT
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2585 " class_capacity + non_class_capacity " SIZE_FORMAT
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2586 " class_capacity " SIZE_FORMAT " non_class_capacity " SIZE_FORMAT,
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2587 allocated_capacity_bytes(), class_capacity + non_class_capacity,
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2588 class_capacity, non_class_capacity));
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2589
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2590 return class_capacity + non_class_capacity;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2591 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2592
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2593 size_t MetaspaceAux::reserved_bytes(Metaspace::MetadataType mdtype) {
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2594 VirtualSpaceList* list = Metaspace::get_space_list(mdtype);
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
2595 return list == NULL ? 0 : list->reserved_bytes();
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
2596 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
2597
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
2598 size_t MetaspaceAux::committed_bytes(Metaspace::MetadataType mdtype) {
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
2599 VirtualSpaceList* list = Metaspace::get_space_list(mdtype);
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
2600 return list == NULL ? 0 : list->committed_bytes();
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2601 }
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2602
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2603 size_t MetaspaceAux::min_chunk_size_words() { return Metaspace::first_chunk_word_size(); }
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2604
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2605 size_t MetaspaceAux::free_chunks_total_words(Metaspace::MetadataType mdtype) {
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2606 ChunkManager* chunk_manager = Metaspace::get_chunk_manager(mdtype);
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2607 if (chunk_manager == NULL) {
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2608 return 0;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2609 }
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2610 chunk_manager->slow_verify();
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2611 return chunk_manager->free_chunks_total_words();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2612 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2613
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2614 size_t MetaspaceAux::free_chunks_total_bytes(Metaspace::MetadataType mdtype) {
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2615 return free_chunks_total_words(mdtype) * BytesPerWord;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2616 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2617
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2618 size_t MetaspaceAux::free_chunks_total_words() {
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2619 return free_chunks_total_words(Metaspace::ClassType) +
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2620 free_chunks_total_words(Metaspace::NonClassType);
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2621 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2622
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2623 size_t MetaspaceAux::free_chunks_total_bytes() {
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2624 return free_chunks_total_words() * BytesPerWord;
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2625 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2626
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2627 void MetaspaceAux::print_metaspace_change(size_t prev_metadata_used) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2628 gclog_or_tty->print(", [Metaspace:");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2629 if (PrintGCDetails && Verbose) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2630 gclog_or_tty->print(" " SIZE_FORMAT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2631 "->" SIZE_FORMAT
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2632 "(" SIZE_FORMAT ")",
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2633 prev_metadata_used,
11037
df7e1c0e3dc1 8014546: MetaspaceAux print_metaspace_change() should print "used" after GC not capacity
jmasa
parents: 10376
diff changeset
2634 allocated_used_bytes(),
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2635 reserved_bytes());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2636 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2637 gclog_or_tty->print(" " SIZE_FORMAT "K"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2638 "->" SIZE_FORMAT "K"
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2639 "(" SIZE_FORMAT "K)",
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2640 prev_metadata_used/K,
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2641 allocated_used_bytes()/K,
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2642 reserved_bytes()/K);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2643 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2644
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2645 gclog_or_tty->print("]");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2646 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2647
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2648 // This is printed when PrintGCDetails
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2649 void MetaspaceAux::print_on(outputStream* out) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2650 Metaspace::MetadataType nct = Metaspace::NonClassType;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2651
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2652 out->print_cr(" Metaspace "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2653 "used " SIZE_FORMAT "K, "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2654 "capacity " SIZE_FORMAT "K, "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2655 "committed " SIZE_FORMAT "K, "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2656 "reserved " SIZE_FORMAT "K",
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2657 allocated_used_bytes()/K,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2658 allocated_capacity_bytes()/K,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2659 committed_bytes()/K,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2660 reserved_bytes()/K);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2661
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2662 if (Metaspace::using_class_space()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2663 Metaspace::MetadataType ct = Metaspace::ClassType;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2664 out->print_cr(" class space "
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2665 "used " SIZE_FORMAT "K, "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2666 "capacity " SIZE_FORMAT "K, "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2667 "committed " SIZE_FORMAT "K, "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2668 "reserved " SIZE_FORMAT "K",
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2669 allocated_used_bytes(ct)/K,
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2670 allocated_capacity_bytes(ct)/K,
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2671 committed_bytes(ct)/K,
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2672 reserved_bytes(ct)/K);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2673 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2674 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2675
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2676 // Print information for class space and data space separately.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2677 // This is almost the same as above.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2678 void MetaspaceAux::print_on(outputStream* out, Metaspace::MetadataType mdtype) {
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2679 size_t free_chunks_capacity_bytes = free_chunks_total_bytes(mdtype);
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2680 size_t capacity_bytes = capacity_bytes_slow(mdtype);
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2681 size_t used_bytes = used_bytes_slow(mdtype);
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
2682 size_t free_bytes = free_bytes_slow(mdtype);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2683 size_t used_and_free = used_bytes + free_bytes +
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2684 free_chunks_capacity_bytes;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2685 out->print_cr(" Chunk accounting: used in chunks " SIZE_FORMAT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2686 "K + unused in chunks " SIZE_FORMAT "K + "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2687 " capacity in free chunks " SIZE_FORMAT "K = " SIZE_FORMAT
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2688 "K capacity in allocated chunks " SIZE_FORMAT "K",
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2689 used_bytes / K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2690 free_bytes / K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2691 free_chunks_capacity_bytes / K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2692 used_and_free / K,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2693 capacity_bytes / K);
8738
1c88b99a2b01 8009282: Assertion "assert(used_and_free == capacity_bytes) failed: Accounting is wrong" failed with -XX:+Verbose -XX:+TraceMetadataChunkAllocation
mgerdin
parents: 8040
diff changeset
2694 // Accounting can only be correct if we got the values during a safepoint
1c88b99a2b01 8009282: Assertion "assert(used_and_free == capacity_bytes) failed: Accounting is wrong" failed with -XX:+Verbose -XX:+TraceMetadataChunkAllocation
mgerdin
parents: 8040
diff changeset
2695 assert(!SafepointSynchronize::is_at_safepoint() || used_and_free == capacity_bytes, "Accounting is wrong");
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2696 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2697
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2698 // Print total fragmentation for class metaspaces
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2699 void MetaspaceAux::print_class_waste(outputStream* out) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2700 assert(Metaspace::using_class_space(), "class metaspace not used");
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2701 size_t cls_specialized_waste = 0, cls_small_waste = 0, cls_medium_waste = 0;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2702 size_t cls_specialized_count = 0, cls_small_count = 0, cls_medium_count = 0, cls_humongous_count = 0;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2703 ClassLoaderDataGraphMetaspaceIterator iter;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2704 while (iter.repeat()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2705 Metaspace* msp = iter.get_next();
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2706 if (msp != NULL) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2707 cls_specialized_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(SpecializedIndex);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2708 cls_specialized_count += msp->class_vsm()->sum_count_in_chunks_in_use(SpecializedIndex);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2709 cls_small_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(SmallIndex);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2710 cls_small_count += msp->class_vsm()->sum_count_in_chunks_in_use(SmallIndex);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2711 cls_medium_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(MediumIndex);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2712 cls_medium_count += msp->class_vsm()->sum_count_in_chunks_in_use(MediumIndex);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2713 cls_humongous_count += msp->class_vsm()->sum_count_in_chunks_in_use(HumongousIndex);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2714 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2715 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2716 out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", "
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2717 SIZE_FORMAT " small(s) " SIZE_FORMAT ", "
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2718 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", "
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2719 "large count " SIZE_FORMAT,
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2720 cls_specialized_count, cls_specialized_waste,
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2721 cls_small_count, cls_small_waste,
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2722 cls_medium_count, cls_medium_waste, cls_humongous_count);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2723 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2724
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2725 // Print total fragmentation for data and class metaspaces separately
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2726 void MetaspaceAux::print_waste(outputStream* out) {
11064
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
2727 size_t specialized_waste = 0, small_waste = 0, medium_waste = 0;
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
2728 size_t specialized_count = 0, small_count = 0, medium_count = 0, humongous_count = 0;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2729
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2730 ClassLoaderDataGraphMetaspaceIterator iter;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2731 while (iter.repeat()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2732 Metaspace* msp = iter.get_next();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2733 if (msp != NULL) {
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2734 specialized_waste += msp->vsm()->sum_waste_in_chunks_in_use(SpecializedIndex);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2735 specialized_count += msp->vsm()->sum_count_in_chunks_in_use(SpecializedIndex);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2736 small_waste += msp->vsm()->sum_waste_in_chunks_in_use(SmallIndex);
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2737 small_count += msp->vsm()->sum_count_in_chunks_in_use(SmallIndex);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2738 medium_waste += msp->vsm()->sum_waste_in_chunks_in_use(MediumIndex);
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2739 medium_count += msp->vsm()->sum_count_in_chunks_in_use(MediumIndex);
11064
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
2740 humongous_count += msp->vsm()->sum_count_in_chunks_in_use(HumongousIndex);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2741 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2742 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2743 out->print_cr("Total fragmentation waste (words) doesn't count free space");
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2744 out->print_cr(" data: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", "
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2745 SIZE_FORMAT " small(s) " SIZE_FORMAT ", "
11064
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
2746 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", "
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
2747 "large count " SIZE_FORMAT,
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2748 specialized_count, specialized_waste, small_count,
11064
de2d15ce3d4a 8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents: 10376
diff changeset
2749 small_waste, medium_count, medium_waste, humongous_count);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2750 if (Metaspace::using_class_space()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2751 print_class_waste(out);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2752 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2753 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2754
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2755 // Dump global metaspace things from the end of ClassLoaderDataGraph
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2756 void MetaspaceAux::dump(outputStream* out) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2757 out->print_cr("All Metaspace:");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2758 out->print("data space: "); print_on(out, Metaspace::NonClassType);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2759 out->print("class space: "); print_on(out, Metaspace::ClassType);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2760 print_waste(out);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2761 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2762
6969
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
2763 void MetaspaceAux::verify_free_chunks() {
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2764 Metaspace::chunk_manager_metadata()->verify();
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2765 if (Metaspace::using_class_space()) {
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2766 Metaspace::chunk_manager_class()->verify();
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2767 }
6969
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
2768 }
6bc207d87e5d 7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents: 6885
diff changeset
2769
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2770 void MetaspaceAux::verify_capacity() {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2771 #ifdef ASSERT
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2772 size_t running_sum_capacity_bytes = allocated_capacity_bytes();
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2773 // For purposes of the running sum of capacity, verify against capacity
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2774 size_t capacity_in_use_bytes = capacity_bytes_slow();
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2775 assert(running_sum_capacity_bytes == capacity_in_use_bytes,
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2776 err_msg("allocated_capacity_words() * BytesPerWord " SIZE_FORMAT
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2777 " capacity_bytes_slow()" SIZE_FORMAT,
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2778 running_sum_capacity_bytes, capacity_in_use_bytes));
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2779 for (Metaspace::MetadataType i = Metaspace::ClassType;
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2780 i < Metaspace:: MetadataTypeCount;
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2781 i = (Metaspace::MetadataType)(i + 1)) {
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2782 size_t capacity_in_use_bytes = capacity_bytes_slow(i);
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2783 assert(allocated_capacity_bytes(i) == capacity_in_use_bytes,
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2784 err_msg("allocated_capacity_bytes(%u) " SIZE_FORMAT
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2785 " capacity_bytes_slow(%u)" SIZE_FORMAT,
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2786 i, allocated_capacity_bytes(i), i, capacity_in_use_bytes));
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2787 }
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2788 #endif
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2789 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2790
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2791 void MetaspaceAux::verify_used() {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2792 #ifdef ASSERT
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2793 size_t running_sum_used_bytes = allocated_used_bytes();
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2794 // For purposes of the running sum of used, verify against used
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2795 size_t used_in_use_bytes = used_bytes_slow();
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2796 assert(allocated_used_bytes() == used_in_use_bytes,
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2797 err_msg("allocated_used_bytes() " SIZE_FORMAT
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2798 " used_bytes_slow()" SIZE_FORMAT,
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2799 allocated_used_bytes(), used_in_use_bytes));
10330
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2800 for (Metaspace::MetadataType i = Metaspace::ClassType;
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2801 i < Metaspace:: MetadataTypeCount;
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2802 i = (Metaspace::MetadataType)(i + 1)) {
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2803 size_t used_in_use_bytes = used_bytes_slow(i);
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2804 assert(allocated_used_bytes(i) == used_in_use_bytes,
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2805 err_msg("allocated_used_bytes(%u) " SIZE_FORMAT
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2806 " used_bytes_slow(%u)" SIZE_FORMAT,
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2807 i, allocated_used_bytes(i), i, used_in_use_bytes));
2b1a9d972fc2 8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents: 10191
diff changeset
2808 }
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2809 #endif
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2810 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2811
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2812 void MetaspaceAux::verify_metrics() {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2813 verify_capacity();
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2814 verify_used();
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2815 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2816
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
2817
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2818 // Metaspace methods
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2819
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2820 size_t Metaspace::_first_chunk_word_size = 0;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2821 size_t Metaspace::_first_class_chunk_word_size = 0;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2822
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2823 size_t Metaspace::_commit_alignment = 0;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2824 size_t Metaspace::_reserve_alignment = 0;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2825
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2826 Metaspace::Metaspace(Mutex* lock, MetaspaceType type) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
2827 initialize(lock, type);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2828 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2829
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2830 Metaspace::~Metaspace() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2831 delete _vsm;
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2832 if (using_class_space()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2833 delete _class_vsm;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2834 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2835 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2836
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2837 VirtualSpaceList* Metaspace::_space_list = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2838 VirtualSpaceList* Metaspace::_class_space_list = NULL;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2839
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2840 ChunkManager* Metaspace::_chunk_manager_metadata = NULL;
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2841 ChunkManager* Metaspace::_chunk_manager_class = NULL;
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2842
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2843 #define VIRTUALSPACEMULTIPLIER 2
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
2844
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2845 #ifdef _LP64
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2846 static const uint64_t UnscaledClassSpaceMax = (uint64_t(max_juint) + 1);
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2847
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2848 void Metaspace::set_narrow_klass_base_and_shift(address metaspace_base, address cds_base) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2849 // Figure out the narrow_klass_base and the narrow_klass_shift. The
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2850 // narrow_klass_base is the lower of the metaspace base and the cds base
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2851 // (if cds is enabled). The narrow_klass_shift depends on the distance
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2852 // between the lower base and higher address.
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2853 address lower_base;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2854 address higher_address;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2855 if (UseSharedSpaces) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2856 higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()),
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2857 (address)(metaspace_base + compressed_class_space_size()));
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2858 lower_base = MIN2(metaspace_base, cds_base);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2859 } else {
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2860 higher_address = metaspace_base + compressed_class_space_size();
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2861 lower_base = metaspace_base;
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2862
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2863 uint64_t klass_encoding_max = UnscaledClassSpaceMax << LogKlassAlignmentInBytes;
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2864 // If compressed class space fits in lower 32G, we don't need a base.
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2865 if (higher_address <= (address)klass_encoding_max) {
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2866 lower_base = 0; // effectively lower base is zero.
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2867 }
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2868 }
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2869
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2870 Universe::set_narrow_klass_base(lower_base);
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2871
13037
c8fc12209830 8027616: Off by one error in putback for compressed oops nashorn performance improvement
coleenp
parents: 13001
diff changeset
2872 if ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax) {
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2873 Universe::set_narrow_klass_shift(0);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2874 } else {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2875 assert(!UseSharedSpaces, "Cannot shift with UseSharedSpaces");
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2876 Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2877 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2878 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2879
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2880 // Return TRUE if the specified metaspace_base and cds_base are close enough
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2881 // to work with compressed klass pointers.
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2882 bool Metaspace::can_use_cds_with_metaspace_addr(char* metaspace_base, address cds_base) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2883 assert(cds_base != 0 && UseSharedSpaces, "Only use with CDS");
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
2884 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs");
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2885 address lower_base = MIN2((address)metaspace_base, cds_base);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2886 address higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()),
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2887 (address)(metaspace_base + compressed_class_space_size()));
13037
c8fc12209830 8027616: Off by one error in putback for compressed oops nashorn performance improvement
coleenp
parents: 13001
diff changeset
2888 return ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2889 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2890
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2891 // Try to allocate the metaspace at the requested addr.
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2892 void Metaspace::allocate_metaspace_compressed_klass_ptrs(char* requested_addr, address cds_base) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2893 assert(using_class_space(), "called improperly");
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
2894 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs");
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2895 assert(compressed_class_space_size() < KlassEncodingMetaspaceMax,
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2896 "Metaspace size is too big");
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2897 assert_is_ptr_aligned(requested_addr, _reserve_alignment);
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2898 assert_is_ptr_aligned(cds_base, _reserve_alignment);
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2899 assert_is_size_aligned(compressed_class_space_size(), _reserve_alignment);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2900
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2901 // Don't use large pages for the class space.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2902 bool large_pages = false;
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2903
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2904 ReservedSpace metaspace_rs = ReservedSpace(compressed_class_space_size(),
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2905 _reserve_alignment,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2906 large_pages,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2907 requested_addr, 0);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2908 if (!metaspace_rs.is_reserved()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2909 if (UseSharedSpaces) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2910 size_t increment = align_size_up(1*G, _reserve_alignment);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2911
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2912 // Keep trying to allocate the metaspace, increasing the requested_addr
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2913 // by 1GB each time, until we reach an address that will no longer allow
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2914 // use of CDS with compressed klass pointers.
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2915 char *addr = requested_addr;
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2916 while (!metaspace_rs.is_reserved() && (addr + increment > addr) &&
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2917 can_use_cds_with_metaspace_addr(addr + increment, cds_base)) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2918 addr = addr + increment;
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2919 metaspace_rs = ReservedSpace(compressed_class_space_size(),
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2920 _reserve_alignment, large_pages, addr, 0);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2921 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2922 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2923
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2924 // If no successful allocation then try to allocate the space anywhere. If
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2925 // that fails then OOM doom. At this point we cannot try allocating the
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
2926 // metaspace as if UseCompressedClassPointers is off because too much
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
2927 // initialization has happened that depends on UseCompressedClassPointers.
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
2928 // So, UseCompressedClassPointers cannot be turned off at this point.
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2929 if (!metaspace_rs.is_reserved()) {
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2930 metaspace_rs = ReservedSpace(compressed_class_space_size(),
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2931 _reserve_alignment, large_pages);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2932 if (!metaspace_rs.is_reserved()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2933 vm_exit_during_initialization(err_msg("Could not allocate metaspace: %d bytes",
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2934 compressed_class_space_size()));
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2935 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2936 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2937 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2938
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2939 // If we got here then the metaspace got allocated.
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2940 MemTracker::record_virtual_memory_type((address)metaspace_rs.base(), mtClass);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2941
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2942 // Verify that we can use shared spaces. Otherwise, turn off CDS.
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2943 if (UseSharedSpaces && !can_use_cds_with_metaspace_addr(metaspace_rs.base(), cds_base)) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2944 FileMapInfo::stop_sharing_and_unmap(
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2945 "Could not allocate metaspace at a compatible address");
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2946 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2947
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2948 set_narrow_klass_base_and_shift((address)metaspace_rs.base(),
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2949 UseSharedSpaces ? (address)cds_base : 0);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2950
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2951 initialize_class_space(metaspace_rs);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2952
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2953 if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2954 gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: " SIZE_FORMAT,
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2955 Universe::narrow_klass_base(), Universe::narrow_klass_shift());
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2956 gclog_or_tty->print_cr("Compressed class space size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT,
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
2957 compressed_class_space_size(), metaspace_rs.base(), requested_addr);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2958 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2959 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2960
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
2961 // For UseCompressedClassPointers the class space is reserved above the top of
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2962 // the Java heap. The argument passed in is at the base of the compressed space.
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2963 void Metaspace::initialize_class_space(ReservedSpace rs) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2964 // The reserved space size may be bigger because of alignment, esp with UseLargePages
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
2965 assert(rs.size() >= CompressedClassSpaceSize,
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
2966 err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize));
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2967 assert(using_class_space(), "Must be using class space");
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2968 _class_space_list = new VirtualSpaceList(rs);
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
2969 _chunk_manager_class = new ChunkManager(SpecializedChunk, ClassSmallChunk, ClassMediumChunk);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2970
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2971 if (!_class_space_list->initialization_succeeded()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2972 vm_exit_during_initialization("Failed to setup compressed class space virtual space list.");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2973 }
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2974 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2975
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2976 #endif
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
2977
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2978 void Metaspace::ergo_initialize() {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2979 if (DumpSharedSpaces) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2980 // Using large pages when dumping the shared archive is currently not implemented.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2981 FLAG_SET_ERGO(bool, UseLargePagesInMetaspace, false);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2982 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2983
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2984 size_t page_size = os::vm_page_size();
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2985 if (UseLargePages && UseLargePagesInMetaspace) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2986 page_size = os::large_page_size();
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2987 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2988
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2989 _commit_alignment = page_size;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2990 _reserve_alignment = MAX2(page_size, (size_t)os::vm_allocation_granularity());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2991
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2992 // Do not use FLAG_SET_ERGO to update MaxMetaspaceSize, since this will
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2993 // override if MaxMetaspaceSize was set on the command line or not.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2994 // This information is needed later to conform to the specification of the
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2995 // java.lang.management.MemoryUsage API.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2996 //
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2997 // Ideally, we would be able to set the default value of MaxMetaspaceSize in
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2998 // globals.hpp to the aligned value, but this is not possible, since the
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
2999 // alignment depends on other flags being parsed.
13058
3aee6bc29547 8026852: Use restricted_align_down in collector policy code
jwilhelm
parents: 12980
diff changeset
3000 MaxMetaspaceSize = align_size_down_bounded(MaxMetaspaceSize, _reserve_alignment);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3001
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3002 if (MetaspaceSize > MaxMetaspaceSize) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3003 MetaspaceSize = MaxMetaspaceSize;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3004 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3005
13058
3aee6bc29547 8026852: Use restricted_align_down in collector policy code
jwilhelm
parents: 12980
diff changeset
3006 MetaspaceSize = align_size_down_bounded(MetaspaceSize, _commit_alignment);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3007
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3008 assert(MetaspaceSize <= MaxMetaspaceSize, "MetaspaceSize should be limited by MaxMetaspaceSize");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3009
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3010 if (MetaspaceSize < 256*K) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3011 vm_exit_during_initialization("Too small initial Metaspace size");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3012 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3013
13058
3aee6bc29547 8026852: Use restricted_align_down in collector policy code
jwilhelm
parents: 12980
diff changeset
3014 MinMetaspaceExpansion = align_size_down_bounded(MinMetaspaceExpansion, _commit_alignment);
3aee6bc29547 8026852: Use restricted_align_down in collector policy code
jwilhelm
parents: 12980
diff changeset
3015 MaxMetaspaceExpansion = align_size_down_bounded(MaxMetaspaceExpansion, _commit_alignment);
3aee6bc29547 8026852: Use restricted_align_down in collector policy code
jwilhelm
parents: 12980
diff changeset
3016
3aee6bc29547 8026852: Use restricted_align_down in collector policy code
jwilhelm
parents: 12980
diff changeset
3017 CompressedClassSpaceSize = align_size_down_bounded(CompressedClassSpaceSize, _reserve_alignment);
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
3018 set_compressed_class_space_size(CompressedClassSpaceSize);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3019 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3020
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3021 void Metaspace::global_initialize() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3022 // Initialize the alignment for shared spaces.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3023 int max_alignment = os::vm_page_size();
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3024 size_t cds_total = 0;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3025
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3026 MetaspaceShared::set_max_alignment(max_alignment);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3027
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3028 if (DumpSharedSpaces) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3029 SharedReadOnlySize = align_size_up(SharedReadOnlySize, max_alignment);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3030 SharedReadWriteSize = align_size_up(SharedReadWriteSize, max_alignment);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3031 SharedMiscDataSize = align_size_up(SharedMiscDataSize, max_alignment);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3032 SharedMiscCodeSize = align_size_up(SharedMiscCodeSize, max_alignment);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3033
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3034 // Initialize with the sum of the shared space sizes. The read-only
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3035 // and read write metaspace chunks will be allocated out of this and the
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3036 // remainder is the misc code and data chunks.
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3037 cds_total = FileMapInfo::shared_spaces_size();
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3038 cds_total = align_size_up(cds_total, _reserve_alignment);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3039 _space_list = new VirtualSpaceList(cds_total/wordSize);
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3040 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3041
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3042 if (!_space_list->initialization_succeeded()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3043 vm_exit_during_initialization("Unable to dump shared archive.", NULL);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3044 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3045
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3046 #ifdef _LP64
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
3047 if (cds_total + compressed_class_space_size() > UnscaledClassSpaceMax) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3048 vm_exit_during_initialization("Unable to dump shared archive.",
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3049 err_msg("Size of archive (" SIZE_FORMAT ") + compressed class space ("
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3050 SIZE_FORMAT ") == total (" SIZE_FORMAT ") is larger than compressed "
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
3051 "klass limit: " SIZE_FORMAT, cds_total, compressed_class_space_size(),
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
3052 cds_total + compressed_class_space_size(), UnscaledClassSpaceMax));
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3053 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3054
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3055 // Set the compressed klass pointer base so that decoding of these pointers works
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3056 // properly when creating the shared archive.
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
3057 assert(UseCompressedOops && UseCompressedClassPointers,
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
3058 "UseCompressedOops and UseCompressedClassPointers must be set");
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3059 Universe::set_narrow_klass_base((address)_space_list->current_virtual_space()->bottom());
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3060 if (TraceMetavirtualspaceAllocation && Verbose) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3061 gclog_or_tty->print_cr("Setting_narrow_klass_base to Address: " PTR_FORMAT,
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3062 _space_list->current_virtual_space()->bottom());
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3063 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3064
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3065 Universe::set_narrow_klass_shift(0);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3066 #endif
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3067
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3068 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3069 // If using shared space, open the file that contains the shared space
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3070 // and map in the memory before initializing the rest of metaspace (so
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3071 // the addresses don't conflict)
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3072 address cds_address = NULL;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3073 if (UseSharedSpaces) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3074 FileMapInfo* mapinfo = new FileMapInfo();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3075 memset(mapinfo, 0, sizeof(FileMapInfo));
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3076
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3077 // Open the shared archive file, read and validate the header. If
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3078 // initialization fails, shared spaces [UseSharedSpaces] are
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3079 // disabled and the file is closed.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3080 // Map in spaces now also
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3081 if (mapinfo->initialize() && MetaspaceShared::map_shared_spaces(mapinfo)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3082 FileMapInfo::set_current_info(mapinfo);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3083 cds_total = FileMapInfo::shared_spaces_size();
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3084 cds_address = (address)mapinfo->region_base(0);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3085 } else {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3086 assert(!mapinfo->is_open() && !UseSharedSpaces,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3087 "archive file not closed or shared spaces not disabled.");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3088 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3089 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3090
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3091 #ifdef _LP64
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
3092 // If UseCompressedClassPointers is set then allocate the metaspace area
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3093 // above the heap and above the CDS area (if it exists).
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3094 if (using_class_space()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3095 if (UseSharedSpaces) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3096 char* cds_end = (char*)(cds_address + cds_total);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3097 cds_end = (char *)align_ptr_up(cds_end, _reserve_alignment);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3098 allocate_metaspace_compressed_klass_ptrs(cds_end, cds_address);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3099 } else {
13000
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
3100 char* base = (char*)align_ptr_up(Universe::heap()->reserved_region().end(), _reserve_alignment);
209aa13ab8c0 8024927: Nashorn performance regression with CompressedOops
coleenp
parents: 12998
diff changeset
3101 allocate_metaspace_compressed_klass_ptrs(base, 0);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3102 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3103 }
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3104 #endif
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3105
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3106 // Initialize these before initializing the VirtualSpaceList
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3107 _first_chunk_word_size = InitialBootClassLoaderMetaspaceSize / BytesPerWord;
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3108 _first_chunk_word_size = align_word_size_up(_first_chunk_word_size);
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3109 // Make the first class chunk bigger than a medium chunk so it's not put
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3110 // on the medium chunk list. The next chunk will be small and progress
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3111 // from there. This size calculated by -version.
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3112 _first_class_chunk_word_size = MIN2((size_t)MediumChunk*6,
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
3113 (CompressedClassSpaceSize/BytesPerWord)*2);
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3114 _first_class_chunk_word_size = align_word_size_up(_first_class_chunk_word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3115 // Arbitrarily set the initial virtual space to a multiple
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3116 // of the boot class loader size.
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3117 size_t word_size = VIRTUALSPACEMULTIPLIER * _first_chunk_word_size;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3118 word_size = align_size_up(word_size, Metaspace::reserve_alignment_words());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3119
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3120 // Initialize the list of virtual spaces.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3121 _space_list = new VirtualSpaceList(word_size);
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3122 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3123
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3124 if (!_space_list->initialization_succeeded()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3125 vm_exit_during_initialization("Unable to setup metadata virtual space list.", NULL);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3126 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3127 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3128
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3129 MetaspaceGC::initialize();
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3130 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3131
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3132 Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3133 size_t chunk_word_size,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3134 size_t chunk_bunch) {
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3135 // Get a chunk from the chunk freelist
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3136 Metachunk* chunk = get_chunk_manager(mdtype)->chunk_freelist_allocate(chunk_word_size);
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3137 if (chunk != NULL) {
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3138 return chunk;
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3139 }
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3140
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3141 return get_space_list(mdtype)->get_new_chunk(chunk_word_size, chunk_word_size, chunk_bunch);
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3142 }
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3143
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3144 void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3145
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3146 assert(space_list() != NULL,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3147 "Metadata VirtualSpaceList has not been initialized");
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3148 assert(chunk_manager_metadata() != NULL,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3149 "Metadata ChunkManager has not been initialized");
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3150
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3151 _vsm = new SpaceManager(NonClassType, lock);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3152 if (_vsm == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3153 return;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3154 }
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3155 size_t word_size;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3156 size_t class_word_size;
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3157 vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3158
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3159 if (using_class_space()) {
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3160 assert(class_space_list() != NULL,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3161 "Class VirtualSpaceList has not been initialized");
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3162 assert(chunk_manager_class() != NULL,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3163 "Class ChunkManager has not been initialized");
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3164
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3165 // Allocate SpaceManager for classes.
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3166 _class_vsm = new SpaceManager(ClassType, lock);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3167 if (_class_vsm == NULL) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3168 return;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3169 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3170 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3171
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3172 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3173
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3174 // Allocate chunk for metadata objects
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3175 Metachunk* new_chunk = get_initialization_chunk(NonClassType,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3176 word_size,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3177 vsm()->medium_chunk_bunch());
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3178 assert(!DumpSharedSpaces || new_chunk != NULL, "should have enough space for both chunks");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3179 if (new_chunk != NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3180 // Add to this manager's list of chunks in use and current_chunk().
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3181 vsm()->add_chunk(new_chunk, true);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3182 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3183
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3184 // Allocate chunk for class metadata objects
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3185 if (using_class_space()) {
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3186 Metachunk* class_chunk = get_initialization_chunk(ClassType,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3187 class_word_size,
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3188 class_vsm()->medium_chunk_bunch());
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3189 if (class_chunk != NULL) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3190 class_vsm()->add_chunk(class_chunk, true);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3191 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3192 }
10376
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3193
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3194 _alloc_record_head = NULL;
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3195 _alloc_record_tail = NULL;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3196 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3197
7446
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3198 size_t Metaspace::align_word_size_up(size_t word_size) {
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3199 size_t byte_size = word_size * wordSize;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3200 return ReservedSpace::allocation_align_size_up(byte_size) / wordSize;
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3201 }
e51c9860cf66 8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents: 7435
diff changeset
3202
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3203 MetaWord* Metaspace::allocate(size_t word_size, MetadataType mdtype) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3204 // DumpSharedSpaces doesn't use class metadata area (yet)
12226
7944aba7ba41 8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents: 12110
diff changeset
3205 // Also, don't use class_vsm() unless UseCompressedClassPointers is true.
12340
bc918fd1e584 8025279: metaspace/flags/maxMetaspaceSize throws OOM: out of Compressed Klass space
mgerdin
parents: 12306
diff changeset
3206 if (is_class_space_allocation(mdtype)) {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3207 return class_vsm()->allocate(word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3208 } else {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3209 return vsm()->allocate(word_size);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3210 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3211 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3212
6753
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents: 6736
diff changeset
3213 MetaWord* Metaspace::expand_and_allocate(size_t word_size, MetadataType mdtype) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3214 size_t delta_bytes = MetaspaceGC::delta_capacity_until_GC(word_size * BytesPerWord);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3215 assert(delta_bytes > 0, "Must be");
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3216
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3217 size_t after_inc = MetaspaceGC::inc_capacity_until_GC(delta_bytes);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3218 size_t before_inc = after_inc - delta_bytes;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3219
6753
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents: 6736
diff changeset
3220 if (PrintGCDetails && Verbose) {
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents: 6736
diff changeset
3221 gclog_or_tty->print_cr("Increase capacity to GC from " SIZE_FORMAT
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3222 " to " SIZE_FORMAT, before_inc, after_inc);
6753
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents: 6736
diff changeset
3223 }
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3224
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3225 return allocate(word_size, mdtype);
6753
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents: 6736
diff changeset
3226 }
8da5e203b993 7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents: 6736
diff changeset
3227
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3228 // Space allocated in the Metaspace. This may
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3229 // be across several metadata virtual spaces.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3230 char* Metaspace::bottom() const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3231 assert(DumpSharedSpaces, "only useful and valid for dumping shared spaces");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3232 return (char*)vsm()->current_chunk()->bottom();
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3233 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3234
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3235 size_t Metaspace::used_words_slow(MetadataType mdtype) const {
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3236 if (mdtype == ClassType) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3237 return using_class_space() ? class_vsm()->sum_used_in_chunks_in_use() : 0;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3238 } else {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3239 return vsm()->sum_used_in_chunks_in_use(); // includes overhead!
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3240 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3241 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3242
12235
d6c266999345 8023476: Metaspace capacity > reserved
ehelin
parents: 12231
diff changeset
3243 size_t Metaspace::free_words_slow(MetadataType mdtype) const {
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3244 if (mdtype == ClassType) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3245 return using_class_space() ? class_vsm()->sum_free_in_chunks_in_use() : 0;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3246 } else {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3247 return vsm()->sum_free_in_chunks_in_use();
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3248 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3249 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3250
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3251 // Space capacity in the Metaspace. It includes
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3252 // space in the list of chunks from which allocations
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3253 // have been made. Don't include space in the global freelist and
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3254 // in the space available in the dictionary which
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3255 // is already counted in some chunk.
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3256 size_t Metaspace::capacity_words_slow(MetadataType mdtype) const {
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3257 if (mdtype == ClassType) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3258 return using_class_space() ? class_vsm()->sum_capacity_in_chunks_in_use() : 0;
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3259 } else {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3260 return vsm()->sum_capacity_in_chunks_in_use();
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3261 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3262 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3263
10183
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3264 size_t Metaspace::used_bytes_slow(MetadataType mdtype) const {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3265 return used_words_slow(mdtype) * BytesPerWord;
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3266 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3267
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3268 size_t Metaspace::capacity_bytes_slow(MetadataType mdtype) const {
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3269 return capacity_words_slow(mdtype) * BytesPerWord;
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3270 }
868d87ed63c8 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 10175
diff changeset
3271
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3272 void Metaspace::deallocate(MetaWord* ptr, size_t word_size, bool is_class) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3273 if (SafepointSynchronize::is_at_safepoint()) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3274 assert(Thread::current()->is_VM_thread(), "should be the VM thread");
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3275 // Don't take Heap_lock
10191
601183f604b2 8013129: Possible deadlock with Metaspace locks due to mixed usage of safepoint aware and non-safepoint aware locking
mgerdin
parents: 10183
diff changeset
3276 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag);
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3277 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3278 // Dark matter. Too small for dictionary.
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3279 #ifdef ASSERT
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3280 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5);
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3281 #endif
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3282 return;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3283 }
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3284 if (is_class && using_class_space()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3285 class_vsm()->deallocate(ptr, word_size);
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3286 } else {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3287 vsm()->deallocate(ptr, word_size);
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3288 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3289 } else {
10191
601183f604b2 8013129: Possible deadlock with Metaspace locks due to mixed usage of safepoint aware and non-safepoint aware locking
mgerdin
parents: 10183
diff changeset
3290 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3291
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3292 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3293 // Dark matter. Too small for dictionary.
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3294 #ifdef ASSERT
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3295 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5);
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3296 #endif
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3297 return;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3298 }
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3299 if (is_class && using_class_space()) {
6885
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3300 class_vsm()->deallocate(ptr, word_size);
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3301 } else {
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3302 vsm()->deallocate(ptr, word_size);
685df3c6f84b 7045397: NPG: Add freelists to class loader arenas.
jmasa
parents: 6786
diff changeset
3303 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3304 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3305 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3306
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3307
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3308 MetaWord* Metaspace::allocate(ClassLoaderData* loader_data, size_t word_size,
10376
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3309 bool read_only, MetaspaceObj::Type type, TRAPS) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3310 if (HAS_PENDING_EXCEPTION) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3311 assert(false, "Should not allocate with exception pending");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3312 return NULL; // caller does a CHECK_NULL too
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3313 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3314
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3315 assert(loader_data != NULL, "Should never pass around a NULL loader_data. "
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3316 "ClassLoaderData::the_null_class_loader_data() should have been used.");
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3317
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3318 // Allocate in metaspaces without taking out a lock, because it deadlocks
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3319 // with the SymbolTable_lock. Dumping is single threaded for now. We'll have
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3320 // to revisit this for application class data sharing.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3321 if (DumpSharedSpaces) {
10376
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3322 assert(type > MetaspaceObj::UnknownType && type < MetaspaceObj::_number_of_types, "sanity");
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3323 Metaspace* space = read_only ? loader_data->ro_metaspace() : loader_data->rw_metaspace();
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3324 MetaWord* result = space->allocate(word_size, NonClassType);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3325 if (result == NULL) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3326 report_out_of_shared_space(read_only ? SharedReadOnly : SharedReadWrite);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3327 }
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3328
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3329 space->record_allocation(result, type, space->vsm()->get_raw_word_size(word_size));
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3330
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3331 // Zero initialize.
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3332 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0);
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3333
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3334 return result;
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3335 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3336
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3337 MetadataType mdtype = (type == MetaspaceObj::ClassType) ? ClassType : NonClassType;
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3338
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3339 // Try to allocate metadata.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3340 MetaWord* result = loader_data->metaspace_non_null()->allocate(word_size, mdtype);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3341
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3342 if (result == NULL) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3343 // Allocation failed.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3344 if (is_init_completed()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3345 // Only start a GC if the bootstrapping has completed.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3346
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3347 // Try to clean out some memory and retry.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3348 result = Universe::heap()->collector_policy()->satisfy_failed_metadata_allocation(
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3349 loader_data, word_size, mdtype);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3350 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3351 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3352
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3353 if (result == NULL) {
12980
91a88c8450f4 8026698: Incorrect error handling in Metaspace::allocate
mgerdin
parents: 12979
diff changeset
3354 report_metadata_oome(loader_data, word_size, mdtype, CHECK_NULL);
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3355 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3356
12902
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3357 // Zero initialize.
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3358 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0);
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3359
bdfbb1fb19ca 8026391: The Metachunk header wastes memory
stefank
parents: 12839
diff changeset
3360 return result;
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3361 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3362
12998
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3363 size_t Metaspace::class_chunk_size(size_t word_size) {
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3364 assert(using_class_space(), "Has to use class space");
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3365 return class_vsm()->calc_chunk_size(word_size);
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3366 }
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3367
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3368 void Metaspace::report_metadata_oome(ClassLoaderData* loader_data, size_t word_size, MetadataType mdtype, TRAPS) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3369 // If result is still null, we are out of memory.
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3370 if (Verbose && TraceMetadataChunkAllocation) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3371 gclog_or_tty->print_cr("Metaspace allocation failed for size "
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3372 SIZE_FORMAT, word_size);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3373 if (loader_data->metaspace_or_null() != NULL) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3374 loader_data->dump(gclog_or_tty);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3375 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3376 MetaspaceAux::dump(gclog_or_tty);
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3377 }
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3378
12998
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3379 bool out_of_compressed_class_space = false;
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3380 if (is_class_space_allocation(mdtype)) {
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3381 Metaspace* metaspace = loader_data->metaspace_non_null();
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3382 out_of_compressed_class_space =
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3383 MetaspaceAux::committed_bytes(Metaspace::ClassType) +
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3384 (metaspace->class_chunk_size(word_size) * BytesPerWord) >
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3385 CompressedClassSpaceSize;
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3386 }
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3387
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3388 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support
12998
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3389 const char* space_string = out_of_compressed_class_space ?
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3390 "Compressed class space" : "Metaspace";
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3391
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3392 report_java_out_of_memory(space_string);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3393
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3394 if (JvmtiExport::should_post_resource_exhausted()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3395 JvmtiExport::post_resource_exhausted(
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3396 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR,
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3397 space_string);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3398 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3399
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3400 if (!is_init_completed()) {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3401 vm_exit_during_initialization("OutOfMemoryError", space_string);
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3402 }
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3403
12998
a6177f601c64 8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents: 12906
diff changeset
3404 if (out_of_compressed_class_space) {
12838
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3405 THROW_OOP(Universe::out_of_memory_error_class_metaspace());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3406 } else {
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3407 THROW_OOP(Universe::out_of_memory_error_metaspace());
85c1ca43713f 8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents: 12340
diff changeset
3408 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3409 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3410
10376
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3411 void Metaspace::record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size) {
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3412 assert(DumpSharedSpaces, "sanity");
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3413
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3414 AllocRecord *rec = new AllocRecord((address)ptr, type, (int)word_size * HeapWordSize);
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3415 if (_alloc_record_head == NULL) {
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3416 _alloc_record_head = _alloc_record_tail = rec;
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3417 } else {
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3418 _alloc_record_tail->_next = rec;
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3419 _alloc_record_tail = rec;
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3420 }
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3421 }
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3422
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3423 void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) {
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3424 assert(DumpSharedSpaces, "unimplemented for !DumpSharedSpaces");
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3425
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3426 address last_addr = (address)bottom();
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3427
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3428 for (AllocRecord *rec = _alloc_record_head; rec; rec = rec->_next) {
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3429 address ptr = rec->_ptr;
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3430 if (last_addr < ptr) {
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3431 closure->doit(last_addr, MetaspaceObj::UnknownType, ptr - last_addr);
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3432 }
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3433 closure->doit(ptr, rec->_type, rec->_byte_size);
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3434 last_addr = ptr + rec->_byte_size;
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3435 }
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3436
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3437 address top = ((address)bottom()) + used_bytes_slow(Metaspace::NonClassType);
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3438 if (last_addr < top) {
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3439 closure->doit(last_addr, MetaspaceObj::UnknownType, top - last_addr);
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3440 }
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3441 }
a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 10330
diff changeset
3442
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3443 void Metaspace::purge(MetadataType mdtype) {
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3444 get_space_list(mdtype)->purge(get_chunk_manager(mdtype));
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3445 }
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3446
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
3447 void Metaspace::purge() {
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
3448 MutexLockerEx cl(SpaceManager::expand_lock(),
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
3449 Mutex::_no_safepoint_check_flag);
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3450 purge(NonClassType);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3451 if (using_class_space()) {
12303
b960c9df4f11 8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents: 12302
diff changeset
3452 purge(ClassType);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3453 }
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
3454 }
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
3455
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3456 void Metaspace::print_on(outputStream* out) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3457 // Print both class virtual space counts and metaspace.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3458 if (Verbose) {
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3459 vsm()->print_on(out);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3460 if (using_class_space()) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3461 class_vsm()->print_on(out);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3462 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3463 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3464 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3465
7176
59c790074993 8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents: 6969
diff changeset
3466 bool Metaspace::contains(const void * ptr) {
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3467 if (MetaspaceShared::is_in_shared_space(ptr)) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3468 return true;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3469 }
7176
59c790074993 8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents: 6969
diff changeset
3470 // This is checked while unlocked. As long as the virtualspaces are added
59c790074993 8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents: 6969
diff changeset
3471 // at the end, the pointer will be in one of them. The virtual spaces
59c790074993 8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents: 6969
diff changeset
3472 // aren't deleted presently. When they are, some sort of locking might
59c790074993 8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents: 6969
diff changeset
3473 // be needed. Note, locking this can cause inversion problems with the
59c790074993 8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents: 6969
diff changeset
3474 // caller in MetaspaceObj::is_metadata() function.
10175
c23dbf0e8ab7 8011268: NPG: Free unused VirtualSpaceNodes
jmasa
parents: 10101
diff changeset
3475 return space_list()->contains(ptr) ||
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3476 (using_class_space() && class_space_list()->contains(ptr));
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3477 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3478
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3479 void Metaspace::verify() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3480 vsm()->verify();
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3481 if (using_class_space()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3482 class_vsm()->verify();
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3483 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3484 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3485
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3486 void Metaspace::dump(outputStream* const out) const {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3487 out->print_cr("\nVirtual space manager: " INTPTR_FORMAT, vsm());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3488 vsm()->dump(out);
12056
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3489 if (using_class_space()) {
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3490 out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm());
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3491 class_vsm()->dump(out);
740e263c80c6 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 11966
diff changeset
3492 }
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
3493 }
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3494
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3495 /////////////// Unit tests ///////////////
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3496
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3497 #ifndef PRODUCT
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3498
12306
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3499 class TestMetaspaceAuxTest : AllStatic {
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3500 public:
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3501 static void test_reserved() {
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3502 size_t reserved = MetaspaceAux::reserved_bytes();
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3503
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3504 assert(reserved > 0, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3505
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3506 size_t committed = MetaspaceAux::committed_bytes();
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3507 assert(committed <= reserved, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3508
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3509 size_t reserved_metadata = MetaspaceAux::reserved_bytes(Metaspace::NonClassType);
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3510 assert(reserved_metadata > 0, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3511 assert(reserved_metadata <= reserved, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3512
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3513 if (UseCompressedClassPointers) {
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3514 size_t reserved_class = MetaspaceAux::reserved_bytes(Metaspace::ClassType);
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3515 assert(reserved_class > 0, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3516 assert(reserved_class < reserved, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3517 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3518 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3519
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3520 static void test_committed() {
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3521 size_t committed = MetaspaceAux::committed_bytes();
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3522
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3523 assert(committed > 0, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3524
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3525 size_t reserved = MetaspaceAux::reserved_bytes();
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3526 assert(committed <= reserved, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3527
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3528 size_t committed_metadata = MetaspaceAux::committed_bytes(Metaspace::NonClassType);
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3529 assert(committed_metadata > 0, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3530 assert(committed_metadata <= committed, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3531
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3532 if (UseCompressedClassPointers) {
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3533 size_t committed_class = MetaspaceAux::committed_bytes(Metaspace::ClassType);
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3534 assert(committed_class > 0, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3535 assert(committed_class < committed, "assert");
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3536 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3537 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3538
12306
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3539 static void test_virtual_space_list_large_chunk() {
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3540 VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity());
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3541 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag);
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3542 // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3543 // vm_allocation_granularity aligned on Windows.
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3544 size_t large_size = (size_t)(2*256*K + (os::vm_page_size()/BytesPerWord));
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3545 large_size += (os::vm_page_size()/BytesPerWord);
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3546 vs_list->get_new_chunk(large_size, large_size, 0);
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3547 }
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3548
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3549 static void test() {
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3550 test_reserved();
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3551 test_committed();
12306
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3552 test_virtual_space_list_large_chunk();
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3553 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3554 };
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3555
12306
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3556 void TestMetaspaceAux_test() {
03f493ce3a71 8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents: 12303
diff changeset
3557 TestMetaspaceAuxTest::test();
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3558 }
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3559
12979
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3560 class TestVirtualSpaceNodeTest {
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3561 static void chunk_up(size_t words_left, size_t& num_medium_chunks,
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3562 size_t& num_small_chunks,
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3563 size_t& num_specialized_chunks) {
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3564 num_medium_chunks = words_left / MediumChunk;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3565 words_left = words_left % MediumChunk;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3566
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3567 num_small_chunks = words_left / SmallChunk;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3568 words_left = words_left % SmallChunk;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3569 // how many specialized chunks can we get?
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3570 num_specialized_chunks = words_left / SpecializedChunk;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3571 assert(words_left % SpecializedChunk == 0, "should be nothing left");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3572 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3573
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3574 public:
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3575 static void test() {
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3576 MutexLockerEx ml(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3577 const size_t vsn_test_size_words = MediumChunk * 4;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3578 const size_t vsn_test_size_bytes = vsn_test_size_words * BytesPerWord;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3579
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3580 // The chunk sizes must be multiples of eachother, or this will fail
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3581 STATIC_ASSERT(MediumChunk % SmallChunk == 0);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3582 STATIC_ASSERT(SmallChunk % SpecializedChunk == 0);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3583
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3584 { // No committed memory in VSN
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3585 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3586 VirtualSpaceNode vsn(vsn_test_size_bytes);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3587 vsn.initialize();
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3588 vsn.retire(&cm);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3589 assert(cm.sum_free_chunks_count() == 0, "did not commit any memory in the VSN");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3590 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3591
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3592 { // All of VSN is committed, half is used by chunks
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3593 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3594 VirtualSpaceNode vsn(vsn_test_size_bytes);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3595 vsn.initialize();
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3596 vsn.expand_by(vsn_test_size_words, vsn_test_size_words);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3597 vsn.get_chunk_vs(MediumChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3598 vsn.get_chunk_vs(MediumChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3599 vsn.retire(&cm);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3600 assert(cm.sum_free_chunks_count() == 2, "should have been memory left for 2 medium chunks");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3601 assert(cm.sum_free_chunks() == 2*MediumChunk, "sizes should add up");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3602 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3603
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3604 { // 4 pages of VSN is committed, some is used by chunks
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3605 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3606 VirtualSpaceNode vsn(vsn_test_size_bytes);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3607 const size_t page_chunks = 4 * (size_t)os::vm_page_size() / BytesPerWord;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3608 assert(page_chunks < MediumChunk, "Test expects medium chunks to be at least 4*page_size");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3609 vsn.initialize();
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3610 vsn.expand_by(page_chunks, page_chunks);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3611 vsn.get_chunk_vs(SmallChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3612 vsn.get_chunk_vs(SpecializedChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3613 vsn.retire(&cm);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3614
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3615 // committed - used = words left to retire
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3616 const size_t words_left = page_chunks - SmallChunk - SpecializedChunk;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3617
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3618 size_t num_medium_chunks, num_small_chunks, num_spec_chunks;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3619 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3620
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3621 assert(num_medium_chunks == 0, "should not get any medium chunks");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3622 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3623 assert(cm.sum_free_chunks() == words_left, "sizes should add up");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3624 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3625
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3626 { // Half of VSN is committed, a humongous chunk is used
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3627 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3628 VirtualSpaceNode vsn(vsn_test_size_bytes);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3629 vsn.initialize();
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3630 vsn.expand_by(MediumChunk * 2, MediumChunk * 2);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3631 vsn.get_chunk_vs(MediumChunk + SpecializedChunk); // Humongous chunks will be aligned up to MediumChunk + SpecializedChunk
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3632 vsn.retire(&cm);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3633
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3634 const size_t words_left = MediumChunk * 2 - (MediumChunk + SpecializedChunk);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3635 size_t num_medium_chunks, num_small_chunks, num_spec_chunks;
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3636 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks);
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3637
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3638 assert(num_medium_chunks == 0, "should not get any medium chunks");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3639 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3640 assert(cm.sum_free_chunks() == words_left, "sizes should add up");
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3641 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3642
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3643 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3644 };
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3645
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3646 void TestVirtualSpaceNode_test() {
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3647 TestVirtualSpaceNodeTest::test();
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3648 }
1d1ea10fe09f 8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
parents: 12906
diff changeset
3649
12236
c4c768305a8f 8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents: 12235
diff changeset
3650 #endif