Mercurial > hg > graal-compiler
annotate src/share/vm/memory/metaspace.cpp @ 20619:b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
Reviewed-by: mgerdin, coleenp, bdelsart
author | stefank |
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date | Thu, 02 Oct 2014 10:55:36 +0200 |
parents | 03e6d34be1f5 |
children | 7848fc12602b |
rev | line source |
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1 /* |
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2 * Copyright (c) 2011, 2014, 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" |
6885 | 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" |
6885 | 33 #include "memory/metachunk.hpp" |
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34 #include "memory/metaspace.hpp" |
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35 #include "memory/metaspaceGCThresholdUpdater.hpp" |
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36 #include "memory/metaspaceShared.hpp" |
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37 #include "memory/metaspaceTracer.hpp" |
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38 #include "memory/resourceArea.hpp" |
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39 #include "memory/universe.hpp" |
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40 #include "runtime/atomic.inline.hpp" |
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41 #include "runtime/globals.hpp" |
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42 #include "runtime/init.hpp" |
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43 #include "runtime/java.hpp" |
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44 #include "runtime/mutex.hpp" |
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45 #include "runtime/orderAccess.inline.hpp" |
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46 #include "services/memTracker.hpp" |
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47 #include "services/memoryService.hpp" |
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48 #include "utilities/copy.hpp" |
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49 #include "utilities/debug.hpp" |
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50 |
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51 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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52 |
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53 typedef BinaryTreeDictionary<Metablock, FreeList<Metablock> > BlockTreeDictionary; |
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54 typedef BinaryTreeDictionary<Metachunk, FreeList<Metachunk> > ChunkTreeDictionary; |
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56 // Set this constant to enable slow integrity checking of the free chunk lists | |
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57 const bool metaspace_slow_verify = false; |
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58 |
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59 size_t const allocation_from_dictionary_limit = 4 * K; |
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60 |
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61 MetaWord* last_allocated = 0; |
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62 |
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63 size_t Metaspace::_compressed_class_space_size; |
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64 const MetaspaceTracer* Metaspace::_tracer = NULL; |
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65 |
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66 // Used in declarations in SpaceManager and ChunkManager |
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67 enum ChunkIndex { |
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68 ZeroIndex = 0, |
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69 SpecializedIndex = ZeroIndex, |
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70 SmallIndex = SpecializedIndex + 1, |
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71 MediumIndex = SmallIndex + 1, |
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72 HumongousIndex = MediumIndex + 1, |
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73 NumberOfFreeLists = 3, |
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74 NumberOfInUseLists = 4 |
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75 }; |
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76 |
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77 enum ChunkSizes { // in words. |
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78 ClassSpecializedChunk = 128, |
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79 SpecializedChunk = 128, |
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80 ClassSmallChunk = 256, |
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81 SmallChunk = 512, |
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82 ClassMediumChunk = 4 * K, |
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83 MediumChunk = 8 * K |
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84 }; |
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85 |
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86 static ChunkIndex next_chunk_index(ChunkIndex i) { |
6885 | 87 assert(i < NumberOfInUseLists, "Out of bound"); |
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88 return (ChunkIndex) (i+1); |
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89 } |
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90 |
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91 volatile intptr_t MetaspaceGC::_capacity_until_GC = 0; |
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92 uint MetaspaceGC::_shrink_factor = 0; |
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93 bool MetaspaceGC::_should_concurrent_collect = false; |
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94 |
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95 typedef class FreeList<Metachunk> ChunkList; |
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96 |
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97 // Manages the global free lists of chunks. |
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98 class ChunkManager : public CHeapObj<mtInternal> { |
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99 friend class TestVirtualSpaceNodeTest; |
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100 |
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101 // Free list of chunks of different sizes. |
10175 | 102 // SpecializedChunk |
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103 // SmallChunk |
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104 // MediumChunk |
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105 // HumongousChunk |
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108 // HumongousChunk | |
109 ChunkTreeDictionary _humongous_dictionary; | |
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110 |
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111 // ChunkManager in all lists of this type |
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112 size_t _free_chunks_total; |
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113 size_t _free_chunks_count; |
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114 |
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115 void dec_free_chunks_total(size_t v) { |
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116 assert(_free_chunks_count > 0 && |
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117 _free_chunks_total > 0, |
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118 "About to go negative"); |
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119 Atomic::add_ptr(-1, &_free_chunks_count); |
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120 jlong minus_v = (jlong) - (jlong) v; |
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121 Atomic::add_ptr(minus_v, &_free_chunks_total); |
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122 } |
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123 |
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124 // Debug support |
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125 |
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126 size_t sum_free_chunks(); |
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127 size_t sum_free_chunks_count(); |
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128 |
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129 void locked_verify_free_chunks_total(); |
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130 void slow_locked_verify_free_chunks_total() { |
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131 if (metaspace_slow_verify) { |
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132 locked_verify_free_chunks_total(); |
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133 } |
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134 } |
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135 void locked_verify_free_chunks_count(); |
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136 void slow_locked_verify_free_chunks_count() { |
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137 if (metaspace_slow_verify) { |
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138 locked_verify_free_chunks_count(); |
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139 } |
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140 } |
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141 void verify_free_chunks_count(); |
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142 |
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143 public: |
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144 |
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145 ChunkManager(size_t specialized_size, size_t small_size, size_t medium_size) |
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146 : _free_chunks_total(0), _free_chunks_count(0) { |
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147 _free_chunks[SpecializedIndex].set_size(specialized_size); |
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148 _free_chunks[SmallIndex].set_size(small_size); |
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149 _free_chunks[MediumIndex].set_size(medium_size); |
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150 } |
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151 |
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152 // add or delete (return) a chunk to the global freelist. |
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153 Metachunk* chunk_freelist_allocate(size_t word_size); |
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154 |
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155 // Map a size to a list index assuming that there are lists |
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156 // for special, small, medium, and humongous chunks. |
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157 static ChunkIndex list_index(size_t size); |
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158 |
10175 | 159 // Remove the chunk from its freelist. It is |
160 // expected to be on one of the _free_chunks[] lists. | |
161 void remove_chunk(Metachunk* chunk); | |
162 | |
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163 // Add the simple linked list of chunks to the freelist of chunks |
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164 // of type index. |
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165 void return_chunks(ChunkIndex index, Metachunk* chunks); |
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166 |
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167 // Total of the space in the free chunks list |
12235 | 168 size_t free_chunks_total_words(); |
169 size_t free_chunks_total_bytes(); | |
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170 |
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171 // Number of chunks in the free chunks list |
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172 size_t free_chunks_count(); |
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173 |
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174 void inc_free_chunks_total(size_t v, size_t count = 1) { |
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175 Atomic::add_ptr(count, &_free_chunks_count); |
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176 Atomic::add_ptr(v, &_free_chunks_total); |
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177 } |
6885 | 178 ChunkTreeDictionary* humongous_dictionary() { |
179 return &_humongous_dictionary; | |
180 } | |
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181 |
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182 ChunkList* free_chunks(ChunkIndex index); |
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183 |
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184 // Returns the list for the given chunk word size. |
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185 ChunkList* find_free_chunks_list(size_t word_size); |
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186 |
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187 // Remove from a list by size. Selects list based on size of chunk. |
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188 Metachunk* free_chunks_get(size_t chunk_word_size); |
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189 |
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190 #define index_bounds_check(index) \ |
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191 assert(index == SpecializedIndex || \ |
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192 index == SmallIndex || \ |
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193 index == MediumIndex || \ |
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194 index == HumongousIndex, err_msg("Bad index: %d", (int) index)) |
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195 |
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196 size_t num_free_chunks(ChunkIndex index) const { |
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197 index_bounds_check(index); |
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198 |
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199 if (index == HumongousIndex) { |
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200 return _humongous_dictionary.total_free_blocks(); |
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201 } |
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202 |
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203 ssize_t count = _free_chunks[index].count(); |
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204 return count == -1 ? 0 : (size_t) count; |
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205 } |
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206 |
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207 size_t size_free_chunks_in_bytes(ChunkIndex index) const { |
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208 index_bounds_check(index); |
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209 |
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210 size_t word_size = 0; |
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211 if (index == HumongousIndex) { |
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212 word_size = _humongous_dictionary.total_size(); |
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213 } else { |
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214 const size_t size_per_chunk_in_words = _free_chunks[index].size(); |
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215 word_size = size_per_chunk_in_words * num_free_chunks(index); |
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216 } |
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217 |
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218 return word_size * BytesPerWord; |
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219 } |
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220 |
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221 MetaspaceChunkFreeListSummary chunk_free_list_summary() const { |
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222 return MetaspaceChunkFreeListSummary(num_free_chunks(SpecializedIndex), |
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223 num_free_chunks(SmallIndex), |
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224 num_free_chunks(MediumIndex), |
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225 num_free_chunks(HumongousIndex), |
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226 size_free_chunks_in_bytes(SpecializedIndex), |
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227 size_free_chunks_in_bytes(SmallIndex), |
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228 size_free_chunks_in_bytes(MediumIndex), |
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229 size_free_chunks_in_bytes(HumongousIndex)); |
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230 } |
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231 |
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232 // Debug support |
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233 void verify(); |
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234 void slow_verify() { |
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235 if (metaspace_slow_verify) { |
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236 verify(); |
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237 } |
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238 } |
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239 void locked_verify(); |
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240 void slow_locked_verify() { |
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241 if (metaspace_slow_verify) { |
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242 locked_verify(); |
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243 } |
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244 } |
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245 void verify_free_chunks_total(); |
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246 |
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247 void locked_print_free_chunks(outputStream* st); |
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248 void locked_print_sum_free_chunks(outputStream* st); |
6885 | 249 |
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250 void print_on(outputStream* st) const; |
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251 }; |
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252 |
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253 // Used to manage the free list of Metablocks (a block corresponds |
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254 // to the allocation of a quantum of metadata). |
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255 class BlockFreelist VALUE_OBJ_CLASS_SPEC { |
6885 | 256 BlockTreeDictionary* _dictionary; |
257 | |
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258 // Only allocate and split from freelist if the size of the allocation |
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259 // is at least 1/4th the size of the available block. |
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260 const static int WasteMultiplier = 4; |
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261 |
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262 // Accessors |
6885 | 263 BlockTreeDictionary* dictionary() const { return _dictionary; } |
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264 |
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265 public: |
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266 BlockFreelist(); |
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267 ~BlockFreelist(); |
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268 |
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269 // Get and return a block to the free list |
6885 | 270 MetaWord* get_block(size_t word_size); |
271 void return_block(MetaWord* p, size_t word_size); | |
272 | |
273 size_t total_size() { | |
274 if (dictionary() == NULL) { | |
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275 return 0; |
6885 | 276 } else { |
277 return dictionary()->total_size(); | |
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278 } |
6885 | 279 } |
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280 |
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281 void print_on(outputStream* st) const; |
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282 }; |
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283 |
12902 | 284 // A VirtualSpaceList node. |
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285 class VirtualSpaceNode : public CHeapObj<mtClass> { |
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286 friend class VirtualSpaceList; |
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287 |
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288 // Link to next VirtualSpaceNode |
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289 VirtualSpaceNode* _next; |
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290 |
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291 // total in the VirtualSpace |
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292 MemRegion _reserved; |
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293 ReservedSpace _rs; |
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294 VirtualSpace _virtual_space; |
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295 MetaWord* _top; |
10175 | 296 // count of chunks contained in this VirtualSpace |
297 uintx _container_count; | |
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298 |
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299 // Convenience functions to access the _virtual_space |
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300 char* low() const { return virtual_space()->low(); } |
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301 char* high() const { return virtual_space()->high(); } |
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302 |
10175 | 303 // The first Metachunk will be allocated at the bottom of the |
304 // VirtualSpace | |
305 Metachunk* first_chunk() { return (Metachunk*) bottom(); } | |
306 | |
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307 // Committed but unused space in the virtual space |
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308 size_t free_words_in_vs() const; |
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309 public: |
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310 |
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311 VirtualSpaceNode(size_t byte_size); |
10175 | 312 VirtualSpaceNode(ReservedSpace rs) : _top(NULL), _next(NULL), _rs(rs), _container_count(0) {} |
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313 ~VirtualSpaceNode(); |
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314 |
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315 // Convenience functions for logical bottom and end |
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316 MetaWord* bottom() const { return (MetaWord*) _virtual_space.low(); } |
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317 MetaWord* end() const { return (MetaWord*) _virtual_space.high(); } |
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318 |
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319 bool contains(const void* ptr) { return ptr >= low() && ptr < high(); } |
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320 |
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321 size_t reserved_words() const { return _virtual_space.reserved_size() / BytesPerWord; } |
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322 size_t committed_words() const { return _virtual_space.actual_committed_size() / BytesPerWord; } |
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323 |
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324 bool is_pre_committed() const { return _virtual_space.special(); } |
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325 |
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326 // address of next available space in _virtual_space; |
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327 // Accessors |
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328 VirtualSpaceNode* next() { return _next; } |
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329 void set_next(VirtualSpaceNode* v) { _next = v; } |
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330 |
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331 void set_reserved(MemRegion const v) { _reserved = v; } |
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332 void set_top(MetaWord* v) { _top = v; } |
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333 |
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334 // Accessors |
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335 MemRegion* reserved() { return &_reserved; } |
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336 VirtualSpace* virtual_space() const { return (VirtualSpace*) &_virtual_space; } |
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337 |
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338 // Returns true if "word_size" is available in the VirtualSpace |
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339 bool is_available(size_t word_size) { return word_size <= pointer_delta(end(), _top, sizeof(MetaWord)); } |
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340 |
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341 MetaWord* top() const { return _top; } |
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342 void inc_top(size_t word_size) { _top += word_size; } |
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343 |
10175 | 344 uintx container_count() { return _container_count; } |
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345 void inc_container_count(); |
10175 | 346 void dec_container_count(); |
347 #ifdef ASSERT | |
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348 uint container_count_slow(); |
10175 | 349 void verify_container_count(); |
350 #endif | |
351 | |
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352 // used and capacity in this single entry in the list |
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353 size_t used_words_in_vs() const; |
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354 size_t capacity_words_in_vs() const; |
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355 |
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356 bool initialize(); |
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357 |
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358 // get space from the virtual space |
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359 Metachunk* take_from_committed(size_t chunk_word_size); |
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360 |
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361 // Allocate a chunk from the virtual space and return it. |
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362 Metachunk* get_chunk_vs(size_t chunk_word_size); |
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363 |
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364 // Expands/shrinks the committed space in a virtual space. Delegates |
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365 // to Virtualspace |
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366 bool expand_by(size_t min_words, size_t preferred_words); |
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367 |
10175 | 368 // In preparation for deleting this node, remove all the chunks |
369 // in the node from any freelist. | |
370 void purge(ChunkManager* chunk_manager); | |
371 | |
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372 // If an allocation doesn't fit in the current node a new node is created. |
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373 // Allocate chunks out of the remaining committed space in this node |
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374 // to avoid wasting that memory. |
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375 // This always adds up because all the chunk sizes are multiples of |
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376 // the smallest chunk size. |
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377 void retire(ChunkManager* chunk_manager); |
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378 |
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379 #ifdef ASSERT |
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380 // Debug support |
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381 void mangle(); |
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382 #endif |
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383 |
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384 void print_on(outputStream* st) const; |
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385 }; |
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386 |
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387 #define assert_is_ptr_aligned(ptr, alignment) \ |
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388 assert(is_ptr_aligned(ptr, alignment), \ |
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389 err_msg(PTR_FORMAT " is not aligned to " \ |
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390 SIZE_FORMAT, ptr, alignment)) |
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391 |
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392 #define assert_is_size_aligned(size, alignment) \ |
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393 assert(is_size_aligned(size, alignment), \ |
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394 err_msg(SIZE_FORMAT " is not aligned to " \ |
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395 SIZE_FORMAT, size, alignment)) |
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396 |
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397 |
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398 // Decide if large pages should be committed when the memory is reserved. |
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399 static bool should_commit_large_pages_when_reserving(size_t bytes) { |
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400 if (UseLargePages && UseLargePagesInMetaspace && !os::can_commit_large_page_memory()) { |
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401 size_t words = bytes / BytesPerWord; |
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402 bool is_class = false; // We never reserve large pages for the class space. |
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403 if (MetaspaceGC::can_expand(words, is_class) && |
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404 MetaspaceGC::allowed_expansion() >= words) { |
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405 return true; |
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406 } |
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407 } |
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408 |
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409 return false; |
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410 } |
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411 |
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412 // byte_size is the size of the associated virtualspace. |
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413 VirtualSpaceNode::VirtualSpaceNode(size_t bytes) : _top(NULL), _next(NULL), _rs(), _container_count(0) { |
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414 assert_is_size_aligned(bytes, Metaspace::reserve_alignment()); |
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415 |
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416 #if INCLUDE_CDS |
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417 // This allocates memory with mmap. For DumpSharedspaces, try to reserve |
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418 // configurable address, generally at the top of the Java heap so other |
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419 // memory addresses don't conflict. |
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420 if (DumpSharedSpaces) { |
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421 bool large_pages = false; // No large pages when dumping the CDS archive. |
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422 char* shared_base = (char*)align_ptr_up((char*)SharedBaseAddress, Metaspace::reserve_alignment()); |
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423 |
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424 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages, shared_base, 0); |
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425 if (_rs.is_reserved()) { |
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426 assert(shared_base == 0 || _rs.base() == shared_base, "should match"); |
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427 } else { |
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428 // Get a mmap region anywhere if the SharedBaseAddress fails. |
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429 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages); |
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430 } |
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431 MetaspaceShared::set_shared_rs(&_rs); |
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432 } else |
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433 #endif |
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434 { |
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435 bool large_pages = should_commit_large_pages_when_reserving(bytes); |
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436 |
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437 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages); |
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438 } |
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439 |
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440 if (_rs.is_reserved()) { |
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441 assert(_rs.base() != NULL, "Catch if we get a NULL address"); |
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442 assert(_rs.size() != 0, "Catch if we get a 0 size"); |
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443 assert_is_ptr_aligned(_rs.base(), Metaspace::reserve_alignment()); |
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444 assert_is_size_aligned(_rs.size(), Metaspace::reserve_alignment()); |
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445 |
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446 MemTracker::record_virtual_memory_type((address)_rs.base(), mtClass); |
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447 } |
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448 } |
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449 |
10175 | 450 void VirtualSpaceNode::purge(ChunkManager* chunk_manager) { |
451 Metachunk* chunk = first_chunk(); | |
452 Metachunk* invalid_chunk = (Metachunk*) top(); | |
453 while (chunk < invalid_chunk ) { | |
12902 | 454 assert(chunk->is_tagged_free(), "Should be tagged free"); |
455 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
456 chunk_manager->remove_chunk(chunk); | |
457 assert(chunk->next() == NULL && | |
458 chunk->prev() == NULL, | |
459 "Was not removed from its list"); | |
460 chunk = (Metachunk*) next; | |
10175 | 461 } |
462 } | |
463 | |
464 #ifdef ASSERT | |
465 uint VirtualSpaceNode::container_count_slow() { | |
466 uint count = 0; | |
467 Metachunk* chunk = first_chunk(); | |
468 Metachunk* invalid_chunk = (Metachunk*) top(); | |
469 while (chunk < invalid_chunk ) { | |
470 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
471 // Don't count the chunks on the free lists. Those are | |
472 // still part of the VirtualSpaceNode but not currently | |
473 // counted. | |
12902 | 474 if (!chunk->is_tagged_free()) { |
10175 | 475 count++; |
476 } | |
477 chunk = (Metachunk*) next; | |
478 } | |
479 return count; | |
480 } | |
481 #endif | |
482 | |
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483 // List of VirtualSpaces for metadata allocation. |
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484 class VirtualSpaceList : public CHeapObj<mtClass> { |
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485 friend class VirtualSpaceNode; |
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486 |
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487 enum VirtualSpaceSizes { |
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488 VirtualSpaceSize = 256 * K |
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489 }; |
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490 |
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491 // Head of the list |
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492 VirtualSpaceNode* _virtual_space_list; |
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493 // virtual space currently being used for allocations |
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494 VirtualSpaceNode* _current_virtual_space; |
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495 |
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496 // Is this VirtualSpaceList used for the compressed class space |
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497 bool _is_class; |
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498 |
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499 // Sum of reserved and committed memory in the virtual spaces |
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500 size_t _reserved_words; |
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501 size_t _committed_words; |
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502 |
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503 // Number of virtual spaces |
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504 size_t _virtual_space_count; |
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505 |
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506 ~VirtualSpaceList(); |
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507 |
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508 VirtualSpaceNode* virtual_space_list() const { return _virtual_space_list; } |
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509 |
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510 void set_virtual_space_list(VirtualSpaceNode* v) { |
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511 _virtual_space_list = v; |
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512 } |
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513 void set_current_virtual_space(VirtualSpaceNode* v) { |
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514 _current_virtual_space = v; |
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515 } |
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516 |
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517 void link_vs(VirtualSpaceNode* new_entry); |
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518 |
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519 // Get another virtual space and add it to the list. This |
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520 // is typically prompted by a failed attempt to allocate a chunk |
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521 // and is typically followed by the allocation of a chunk. |
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522 bool create_new_virtual_space(size_t vs_word_size); |
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523 |
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524 // Chunk up the unused committed space in the current |
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525 // virtual space and add the chunks to the free list. |
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526 void retire_current_virtual_space(); |
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527 |
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528 public: |
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529 VirtualSpaceList(size_t word_size); |
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530 VirtualSpaceList(ReservedSpace rs); |
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531 |
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532 size_t free_bytes(); |
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533 |
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534 Metachunk* get_new_chunk(size_t word_size, |
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535 size_t grow_chunks_by_words, |
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536 size_t medium_chunk_bunch); |
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537 |
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538 bool expand_node_by(VirtualSpaceNode* node, |
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539 size_t min_words, |
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540 size_t preferred_words); |
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541 |
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542 bool expand_by(size_t min_words, |
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543 size_t preferred_words); |
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544 |
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545 VirtualSpaceNode* current_virtual_space() { |
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546 return _current_virtual_space; |
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547 } |
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548 |
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549 bool is_class() const { return _is_class; } |
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550 |
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551 bool initialization_succeeded() { return _virtual_space_list != NULL; } |
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552 |
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553 size_t reserved_words() { return _reserved_words; } |
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554 size_t reserved_bytes() { return reserved_words() * BytesPerWord; } |
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555 size_t committed_words() { return _committed_words; } |
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556 size_t committed_bytes() { return committed_words() * BytesPerWord; } |
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557 |
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558 void inc_reserved_words(size_t v); |
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559 void dec_reserved_words(size_t v); |
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560 void inc_committed_words(size_t v); |
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561 void dec_committed_words(size_t v); |
10175 | 562 void inc_virtual_space_count(); |
563 void dec_virtual_space_count(); | |
564 | |
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565 bool contains(const void* ptr); |
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566 |
10175 | 567 // Unlink empty VirtualSpaceNodes and free it. |
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568 void purge(ChunkManager* chunk_manager); |
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569 |
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570 void print_on(outputStream* st) const; |
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571 |
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572 class VirtualSpaceListIterator : public StackObj { |
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573 VirtualSpaceNode* _virtual_spaces; |
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574 public: |
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575 VirtualSpaceListIterator(VirtualSpaceNode* virtual_spaces) : |
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576 _virtual_spaces(virtual_spaces) {} |
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577 |
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578 bool repeat() { |
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579 return _virtual_spaces != NULL; |
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580 } |
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581 |
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582 VirtualSpaceNode* get_next() { |
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583 VirtualSpaceNode* result = _virtual_spaces; |
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584 if (_virtual_spaces != NULL) { |
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585 _virtual_spaces = _virtual_spaces->next(); |
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586 } |
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587 return result; |
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588 } |
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589 }; |
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590 }; |
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591 |
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592 class Metadebug : AllStatic { |
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593 // Debugging support for Metaspaces |
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594 static int _allocation_fail_alot_count; |
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595 |
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596 public: |
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597 |
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598 static void init_allocation_fail_alot_count(); |
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599 #ifdef ASSERT |
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600 static bool test_metadata_failure(); |
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601 #endif |
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602 }; |
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603 |
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604 int Metadebug::_allocation_fail_alot_count = 0; |
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605 |
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606 // SpaceManager - used by Metaspace to handle allocations |
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607 class SpaceManager : public CHeapObj<mtClass> { |
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608 friend class Metaspace; |
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609 friend class Metadebug; |
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610 |
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611 private: |
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612 |
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613 // protects allocations |
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614 Mutex* const _lock; |
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615 |
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616 // Type of metadata allocated. |
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617 Metaspace::MetadataType _mdtype; |
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618 |
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619 // List of chunks in use by this SpaceManager. Allocations |
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620 // are done from the current chunk. The list is used for deallocating |
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621 // chunks when the SpaceManager is freed. |
6885 | 622 Metachunk* _chunks_in_use[NumberOfInUseLists]; |
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623 Metachunk* _current_chunk; |
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624 |
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625 // Number of small chunks to allocate to a manager |
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626 // If class space manager, small chunks are unlimited |
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627 static uint const _small_chunk_limit; |
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628 |
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629 // Sum of all space in allocated chunks |
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630 size_t _allocated_blocks_words; |
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631 |
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632 // Sum of all allocated chunks |
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633 size_t _allocated_chunks_words; |
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634 size_t _allocated_chunks_count; |
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635 |
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636 // Free lists of blocks are per SpaceManager since they |
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637 // are assumed to be in chunks in use by the SpaceManager |
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638 // and all chunks in use by a SpaceManager are freed when |
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639 // the class loader using the SpaceManager is collected. |
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640 BlockFreelist _block_freelists; |
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641 |
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642 // protects virtualspace and chunk expansions |
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643 static const char* _expand_lock_name; |
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644 static const int _expand_lock_rank; |
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645 static Mutex* const _expand_lock; |
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646 |
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647 private: |
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648 // Accessors |
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649 Metachunk* chunks_in_use(ChunkIndex index) const { return _chunks_in_use[index]; } |
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650 void set_chunks_in_use(ChunkIndex index, Metachunk* v) { |
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651 _chunks_in_use[index] = v; |
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652 } |
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653 |
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654 BlockFreelist* block_freelists() const { |
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655 return (BlockFreelist*) &_block_freelists; |
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656 } |
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657 |
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658 Metaspace::MetadataType mdtype() { return _mdtype; } |
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659 |
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660 VirtualSpaceList* vs_list() const { return Metaspace::get_space_list(_mdtype); } |
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661 ChunkManager* chunk_manager() const { return Metaspace::get_chunk_manager(_mdtype); } |
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662 |
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663 Metachunk* current_chunk() const { return _current_chunk; } |
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664 void set_current_chunk(Metachunk* v) { |
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665 _current_chunk = v; |
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666 } |
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667 |
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668 Metachunk* find_current_chunk(size_t word_size); |
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669 |
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670 // Add chunk to the list of chunks in use |
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671 void add_chunk(Metachunk* v, bool make_current); |
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672 void retire_current_chunk(); |
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673 |
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674 Mutex* lock() const { return _lock; } |
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675 |
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676 const char* chunk_size_name(ChunkIndex index) const; |
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677 |
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678 protected: |
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679 void initialize(); |
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680 |
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681 public: |
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682 SpaceManager(Metaspace::MetadataType mdtype, |
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683 Mutex* lock); |
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684 ~SpaceManager(); |
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685 |
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686 enum ChunkMultiples { |
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687 MediumChunkMultiple = 4 |
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688 }; |
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689 |
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690 bool is_class() { return _mdtype == Metaspace::ClassType; } |
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691 |
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692 // Accessors |
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693 size_t specialized_chunk_size() { return (size_t) is_class() ? ClassSpecializedChunk : SpecializedChunk; } |
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694 size_t small_chunk_size() { return (size_t) is_class() ? ClassSmallChunk : SmallChunk; } |
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695 size_t medium_chunk_size() { return (size_t) is_class() ? ClassMediumChunk : MediumChunk; } |
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696 size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; } |
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697 |
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698 size_t smallest_chunk_size() { return specialized_chunk_size(); } |
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699 |
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700 size_t allocated_blocks_words() const { return _allocated_blocks_words; } |
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701 size_t allocated_blocks_bytes() const { return _allocated_blocks_words * BytesPerWord; } |
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702 size_t allocated_chunks_words() const { return _allocated_chunks_words; } |
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703 size_t allocated_chunks_count() const { return _allocated_chunks_count; } |
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704 |
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705 bool is_humongous(size_t word_size) { return word_size > medium_chunk_size(); } |
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706 |
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707 static Mutex* expand_lock() { return _expand_lock; } |
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708 |
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709 // Increment the per Metaspace and global running sums for Metachunks |
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710 // by the given size. This is used when a Metachunk to added to |
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711 // the in-use list. |
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712 void inc_size_metrics(size_t words); |
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713 // Increment the per Metaspace and global running sums Metablocks by the given |
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714 // size. This is used when a Metablock is allocated. |
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715 void inc_used_metrics(size_t words); |
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716 // Delete the portion of the running sums for this SpaceManager. That is, |
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717 // the globals running sums for the Metachunks and Metablocks are |
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718 // decremented for all the Metachunks in-use by this SpaceManager. |
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719 void dec_total_from_size_metrics(); |
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720 |
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721 // Set the sizes for the initial chunks. |
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722 void get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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723 size_t* chunk_word_size, |
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724 size_t* class_chunk_word_size); |
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725 |
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726 size_t sum_capacity_in_chunks_in_use() const; |
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727 size_t sum_used_in_chunks_in_use() const; |
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728 size_t sum_free_in_chunks_in_use() const; |
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729 size_t sum_waste_in_chunks_in_use() const; |
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730 size_t sum_waste_in_chunks_in_use(ChunkIndex index ) const; |
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731 |
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732 size_t sum_count_in_chunks_in_use(); |
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733 size_t sum_count_in_chunks_in_use(ChunkIndex i); |
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734 |
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735 Metachunk* get_new_chunk(size_t word_size, size_t grow_chunks_by_words); |
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736 |
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737 // Block allocation and deallocation. |
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738 // Allocates a block from the current chunk |
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739 MetaWord* allocate(size_t word_size); |
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740 |
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741 // Helper for allocations |
6885 | 742 MetaWord* allocate_work(size_t word_size); |
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743 |
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744 // Returns a block to the per manager freelist |
6885 | 745 void deallocate(MetaWord* p, size_t word_size); |
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746 |
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747 // Based on the allocation size and a minimum chunk size, |
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748 // returned chunk size (for expanding space for chunk allocation). |
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749 size_t calc_chunk_size(size_t allocation_word_size); |
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750 |
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751 // Called when an allocation from the current chunk fails. |
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752 // Gets a new chunk (may require getting a new virtual space), |
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753 // and allocates from that chunk. |
6885 | 754 MetaWord* grow_and_allocate(size_t word_size); |
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755 |
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756 // Notify memory usage to MemoryService. |
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757 void track_metaspace_memory_usage(); |
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758 |
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759 // debugging support. |
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760 |
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761 void dump(outputStream* const out) const; |
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762 void print_on(outputStream* st) const; |
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763 void locked_print_chunks_in_use_on(outputStream* st) const; |
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764 |
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765 void verify(); |
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766 void verify_chunk_size(Metachunk* chunk); |
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767 NOT_PRODUCT(void mangle_freed_chunks();) |
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768 #ifdef ASSERT |
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769 void verify_allocated_blocks_words(); |
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770 #endif |
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771 |
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772 size_t get_raw_word_size(size_t word_size) { |
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773 size_t byte_size = word_size * BytesPerWord; |
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774 |
12902 | 775 size_t raw_bytes_size = MAX2(byte_size, sizeof(Metablock)); |
776 raw_bytes_size = align_size_up(raw_bytes_size, Metachunk::object_alignment()); | |
777 | |
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778 size_t raw_word_size = raw_bytes_size / BytesPerWord; |
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779 assert(raw_word_size * BytesPerWord == raw_bytes_size, "Size problem"); |
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780 |
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781 return raw_word_size; |
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782 } |
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783 }; |
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784 |
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785 uint const SpaceManager::_small_chunk_limit = 4; |
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786 |
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787 const char* SpaceManager::_expand_lock_name = |
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788 "SpaceManager chunk allocation lock"; |
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789 const int SpaceManager::_expand_lock_rank = Monitor::leaf - 1; |
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790 Mutex* const SpaceManager::_expand_lock = |
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791 new Mutex(SpaceManager::_expand_lock_rank, |
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792 SpaceManager::_expand_lock_name, |
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793 Mutex::_allow_vm_block_flag); |
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794 |
10175 | 795 void VirtualSpaceNode::inc_container_count() { |
796 assert_lock_strong(SpaceManager::expand_lock()); | |
797 _container_count++; | |
798 assert(_container_count == container_count_slow(), | |
799 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
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800 " container_count_slow() " SIZE_FORMAT, |
10175 | 801 _container_count, container_count_slow())); |
802 } | |
803 | |
804 void VirtualSpaceNode::dec_container_count() { | |
805 assert_lock_strong(SpaceManager::expand_lock()); | |
806 _container_count--; | |
807 } | |
808 | |
809 #ifdef ASSERT | |
810 void VirtualSpaceNode::verify_container_count() { | |
811 assert(_container_count == container_count_slow(), | |
812 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
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813 " container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow())); |
10175 | 814 } |
815 #endif | |
816 | |
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817 // BlockFreelist methods |
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818 |
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819 BlockFreelist::BlockFreelist() : _dictionary(NULL) {} |
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820 |
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821 BlockFreelist::~BlockFreelist() { |
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822 if (_dictionary != NULL) { |
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823 if (Verbose && TraceMetadataChunkAllocation) { |
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824 _dictionary->print_free_lists(gclog_or_tty); |
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825 } |
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826 delete _dictionary; |
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827 } |
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828 } |
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829 |
6885 | 830 void BlockFreelist::return_block(MetaWord* p, size_t word_size) { |
12902 | 831 Metablock* free_chunk = ::new (p) Metablock(word_size); |
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832 if (dictionary() == NULL) { |
6885 | 833 _dictionary = new BlockTreeDictionary(); |
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834 } |
6885 | 835 dictionary()->return_chunk(free_chunk); |
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836 } |
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837 |
6885 | 838 MetaWord* BlockFreelist::get_block(size_t word_size) { |
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839 if (dictionary() == NULL) { |
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840 return NULL; |
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841 } |
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842 |
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843 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 844 // Dark matter. Too small for dictionary. |
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845 return NULL; |
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846 } |
6885 | 847 |
848 Metablock* free_block = | |
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849 dictionary()->get_chunk(word_size, FreeBlockDictionary<Metablock>::atLeast); |
6885 | 850 if (free_block == NULL) { |
851 return NULL; | |
852 } | |
853 | |
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854 const size_t block_size = free_block->size(); |
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855 if (block_size > WasteMultiplier * word_size) { |
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856 return_block((MetaWord*)free_block, block_size); |
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857 return NULL; |
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858 } |
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859 |
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860 MetaWord* new_block = (MetaWord*)free_block; |
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861 assert(block_size >= word_size, "Incorrect size of block from freelist"); |
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862 const size_t unused = block_size - word_size; |
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863 if (unused >= TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
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864 return_block(new_block + word_size, unused); |
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865 } |
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866 |
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867 return new_block; |
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868 } |
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869 |
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870 void BlockFreelist::print_on(outputStream* st) const { |
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871 if (dictionary() == NULL) { |
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872 return; |
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873 } |
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874 dictionary()->print_free_lists(st); |
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875 } |
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876 |
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877 // VirtualSpaceNode methods |
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878 |
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879 VirtualSpaceNode::~VirtualSpaceNode() { |
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880 _rs.release(); |
10175 | 881 #ifdef ASSERT |
882 size_t word_size = sizeof(*this) / BytesPerWord; | |
883 Copy::fill_to_words((HeapWord*) this, word_size, 0xf1f1f1f1); | |
884 #endif | |
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885 } |
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886 |
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887 size_t VirtualSpaceNode::used_words_in_vs() const { |
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888 return pointer_delta(top(), bottom(), sizeof(MetaWord)); |
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889 } |
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890 |
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891 // Space committed in the VirtualSpace |
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892 size_t VirtualSpaceNode::capacity_words_in_vs() const { |
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893 return pointer_delta(end(), bottom(), sizeof(MetaWord)); |
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894 } |
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895 |
10183
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896 size_t VirtualSpaceNode::free_words_in_vs() const { |
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897 return pointer_delta(end(), top(), sizeof(MetaWord)); |
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898 } |
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899 |
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900 // Allocates the chunk from the virtual space only. |
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901 // This interface is also used internally for debugging. Not all |
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902 // chunks removed here are necessarily used for allocation. |
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903 Metachunk* VirtualSpaceNode::take_from_committed(size_t chunk_word_size) { |
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904 // Bottom of the new chunk |
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905 MetaWord* chunk_limit = top(); |
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906 assert(chunk_limit != NULL, "Not safe to call this method"); |
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907 |
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908 // The virtual spaces are always expanded by the |
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909 // commit granularity to enforce the following condition. |
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910 // Without this the is_available check will not work correctly. |
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911 assert(_virtual_space.committed_size() == _virtual_space.actual_committed_size(), |
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912 "The committed memory doesn't match the expanded memory."); |
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913 |
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914 if (!is_available(chunk_word_size)) { |
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915 if (TraceMetadataChunkAllocation) { |
12240
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916 gclog_or_tty->print("VirtualSpaceNode::take_from_committed() not available %d words ", chunk_word_size); |
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917 // Dump some information about the virtual space that is nearly full |
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918 print_on(gclog_or_tty); |
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919 } |
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920 return NULL; |
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921 } |
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922 |
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923 // Take the space (bump top on the current virtual space). |
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924 inc_top(chunk_word_size); |
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925 |
10175 | 926 // Initialize the chunk |
927 Metachunk* result = ::new (chunk_limit) Metachunk(chunk_word_size, this); | |
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928 return result; |
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929 } |
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930 |
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931 |
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932 // Expand the virtual space (commit more of the reserved space) |
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933 bool VirtualSpaceNode::expand_by(size_t min_words, size_t preferred_words) { |
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934 size_t min_bytes = min_words * BytesPerWord; |
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935 size_t preferred_bytes = preferred_words * BytesPerWord; |
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936 |
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937 size_t uncommitted = virtual_space()->reserved_size() - virtual_space()->actual_committed_size(); |
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938 |
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939 if (uncommitted < min_bytes) { |
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940 return false; |
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941 } |
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942 |
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943 size_t commit = MIN2(preferred_bytes, uncommitted); |
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944 bool result = virtual_space()->expand_by(commit, false); |
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945 |
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946 assert(result, "Failed to commit memory"); |
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947 |
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948 return result; |
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949 } |
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950 |
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951 Metachunk* VirtualSpaceNode::get_chunk_vs(size_t chunk_word_size) { |
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952 assert_lock_strong(SpaceManager::expand_lock()); |
10175 | 953 Metachunk* result = take_from_committed(chunk_word_size); |
954 if (result != NULL) { | |
955 inc_container_count(); | |
956 } | |
957 return result; | |
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958 } |
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959 |
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960 bool VirtualSpaceNode::initialize() { |
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961 |
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962 if (!_rs.is_reserved()) { |
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963 return false; |
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964 } |
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965 |
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966 // These are necessary restriction to make sure that the virtual space always |
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967 // grows in steps of Metaspace::commit_alignment(). If both base and size are |
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968 // aligned only the middle alignment of the VirtualSpace is used. |
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969 assert_is_ptr_aligned(_rs.base(), Metaspace::commit_alignment()); |
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970 assert_is_size_aligned(_rs.size(), Metaspace::commit_alignment()); |
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971 |
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972 // ReservedSpaces marked as special will have the entire memory |
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973 // pre-committed. Setting a committed size will make sure that |
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974 // committed_size and actual_committed_size agrees. |
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975 size_t pre_committed_size = _rs.special() ? _rs.size() : 0; |
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976 |
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977 bool result = virtual_space()->initialize_with_granularity(_rs, pre_committed_size, |
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978 Metaspace::commit_alignment()); |
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979 if (result) { |
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980 assert(virtual_space()->committed_size() == virtual_space()->actual_committed_size(), |
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981 "Checking that the pre-committed memory was registered by the VirtualSpace"); |
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982 |
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983 set_top((MetaWord*)virtual_space()->low()); |
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984 set_reserved(MemRegion((HeapWord*)_rs.base(), |
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985 (HeapWord*)(_rs.base() + _rs.size()))); |
6726
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986 |
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987 assert(reserved()->start() == (HeapWord*) _rs.base(), |
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988 err_msg("Reserved start was not set properly " PTR_FORMAT |
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989 " != " PTR_FORMAT, reserved()->start(), _rs.base())); |
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990 assert(reserved()->word_size() == _rs.size() / BytesPerWord, |
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991 err_msg("Reserved size was not set properly " SIZE_FORMAT |
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992 " != " SIZE_FORMAT, reserved()->word_size(), |
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993 _rs.size() / BytesPerWord)); |
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994 } |
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995 |
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996 return result; |
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997 } |
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998 |
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999 void VirtualSpaceNode::print_on(outputStream* st) const { |
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1000 size_t used = used_words_in_vs(); |
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1001 size_t capacity = capacity_words_in_vs(); |
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1002 VirtualSpace* vs = virtual_space(); |
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1003 st->print_cr(" space @ " PTR_FORMAT " " SIZE_FORMAT "K, %3d%% used " |
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1004 "[" PTR_FORMAT ", " PTR_FORMAT ", " |
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1005 PTR_FORMAT ", " PTR_FORMAT ")", |
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1006 vs, capacity / K, |
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1007 capacity == 0 ? 0 : used * 100 / capacity, |
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1008 bottom(), top(), end(), |
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1009 vs->high_boundary()); |
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1010 } |
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1011 |
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1012 #ifdef ASSERT |
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1013 void VirtualSpaceNode::mangle() { |
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1014 size_t word_size = capacity_words_in_vs(); |
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1015 Copy::fill_to_words((HeapWord*) low(), word_size, 0xf1f1f1f1); |
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1016 } |
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1017 #endif // ASSERT |
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1018 |
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1019 // VirtualSpaceList methods |
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1020 // Space allocated from the VirtualSpace |
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1021 |
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1022 VirtualSpaceList::~VirtualSpaceList() { |
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1023 VirtualSpaceListIterator iter(virtual_space_list()); |
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1024 while (iter.repeat()) { |
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1025 VirtualSpaceNode* vsl = iter.get_next(); |
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1026 delete vsl; |
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1027 } |
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1028 } |
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1029 |
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1030 void VirtualSpaceList::inc_reserved_words(size_t v) { |
10175 | 1031 assert_lock_strong(SpaceManager::expand_lock()); |
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1032 _reserved_words = _reserved_words + v; |
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1033 } |
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1034 void VirtualSpaceList::dec_reserved_words(size_t v) { |
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1035 assert_lock_strong(SpaceManager::expand_lock()); |
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1036 _reserved_words = _reserved_words - v; |
10175 | 1037 } |
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1038 |
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1039 #define assert_committed_below_limit() \ |
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1040 assert(MetaspaceAux::committed_bytes() <= MaxMetaspaceSize, \ |
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1041 err_msg("Too much committed memory. Committed: " SIZE_FORMAT \ |
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1042 " limit (MaxMetaspaceSize): " SIZE_FORMAT, \ |
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1043 MetaspaceAux::committed_bytes(), MaxMetaspaceSize)); |
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1044 |
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1045 void VirtualSpaceList::inc_committed_words(size_t v) { |
10175 | 1046 assert_lock_strong(SpaceManager::expand_lock()); |
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1047 _committed_words = _committed_words + v; |
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1048 |
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1049 assert_committed_below_limit(); |
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1050 } |
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1051 void VirtualSpaceList::dec_committed_words(size_t v) { |
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1052 assert_lock_strong(SpaceManager::expand_lock()); |
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1053 _committed_words = _committed_words - v; |
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1054 |
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1055 assert_committed_below_limit(); |
10175 | 1056 } |
1057 | |
1058 void VirtualSpaceList::inc_virtual_space_count() { | |
1059 assert_lock_strong(SpaceManager::expand_lock()); | |
1060 _virtual_space_count++; | |
1061 } | |
1062 void VirtualSpaceList::dec_virtual_space_count() { | |
1063 assert_lock_strong(SpaceManager::expand_lock()); | |
1064 _virtual_space_count--; | |
1065 } | |
1066 | |
1067 void ChunkManager::remove_chunk(Metachunk* chunk) { | |
1068 size_t word_size = chunk->word_size(); | |
1069 ChunkIndex index = list_index(word_size); | |
1070 if (index != HumongousIndex) { | |
1071 free_chunks(index)->remove_chunk(chunk); | |
1072 } else { | |
1073 humongous_dictionary()->remove_chunk(chunk); | |
1074 } | |
1075 | |
1076 // Chunk is being removed from the chunks free list. | |
12902 | 1077 dec_free_chunks_total(chunk->word_size()); |
10175 | 1078 } |
1079 | |
1080 // Walk the list of VirtualSpaceNodes and delete | |
1081 // nodes with a 0 container_count. Remove Metachunks in | |
1082 // the node from their respective freelists. | |
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1083 void VirtualSpaceList::purge(ChunkManager* chunk_manager) { |
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1084 assert(SafepointSynchronize::is_at_safepoint(), "must be called at safepoint for contains to work"); |
10175 | 1085 assert_lock_strong(SpaceManager::expand_lock()); |
1086 // Don't use a VirtualSpaceListIterator because this | |
1087 // list is being changed and a straightforward use of an iterator is not safe. | |
1088 VirtualSpaceNode* purged_vsl = NULL; | |
1089 VirtualSpaceNode* prev_vsl = virtual_space_list(); | |
1090 VirtualSpaceNode* next_vsl = prev_vsl; | |
1091 while (next_vsl != NULL) { | |
1092 VirtualSpaceNode* vsl = next_vsl; | |
1093 next_vsl = vsl->next(); | |
1094 // Don't free the current virtual space since it will likely | |
1095 // be needed soon. | |
1096 if (vsl->container_count() == 0 && vsl != current_virtual_space()) { | |
1097 // Unlink it from the list | |
1098 if (prev_vsl == vsl) { | |
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1099 // This is the case of the current node being the first node. |
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1100 assert(vsl == virtual_space_list(), "Expected to be the first node"); |
10175 | 1101 set_virtual_space_list(vsl->next()); |
1102 } else { | |
1103 prev_vsl->set_next(vsl->next()); | |
1104 } | |
1105 | |
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1106 vsl->purge(chunk_manager); |
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1107 dec_reserved_words(vsl->reserved_words()); |
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1108 dec_committed_words(vsl->committed_words()); |
10175 | 1109 dec_virtual_space_count(); |
1110 purged_vsl = vsl; | |
1111 delete vsl; | |
1112 } else { | |
1113 prev_vsl = vsl; | |
1114 } | |
1115 } | |
1116 #ifdef ASSERT | |
1117 if (purged_vsl != NULL) { | |
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1118 // List should be stable enough to use an iterator here. |
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1119 VirtualSpaceListIterator iter(virtual_space_list()); |
10175 | 1120 while (iter.repeat()) { |
1121 VirtualSpaceNode* vsl = iter.get_next(); | |
1122 assert(vsl != purged_vsl, "Purge of vsl failed"); | |
1123 } | |
1124 } | |
1125 #endif | |
1126 } | |
1127 | |
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1128 |
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1129 // This function looks at the mmap regions in the metaspace without locking. |
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1130 // The chunks are added with store ordering and not deleted except for at |
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1131 // unloading time during a safepoint. |
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1132 bool VirtualSpaceList::contains(const void* ptr) { |
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1133 // List should be stable enough to use an iterator here because removing virtual |
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1134 // space nodes is only allowed at a safepoint. |
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1135 VirtualSpaceListIterator iter(virtual_space_list()); |
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1136 while (iter.repeat()) { |
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1137 VirtualSpaceNode* vsn = iter.get_next(); |
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1138 if (vsn->contains(ptr)) { |
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1139 return true; |
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1140 } |
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1141 } |
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1142 return false; |
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1143 } |
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1144 |
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1145 void VirtualSpaceList::retire_current_virtual_space() { |
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1146 assert_lock_strong(SpaceManager::expand_lock()); |
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1147 |
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1148 VirtualSpaceNode* vsn = current_virtual_space(); |
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1149 |
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1150 ChunkManager* cm = is_class() ? Metaspace::chunk_manager_class() : |
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1151 Metaspace::chunk_manager_metadata(); |
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1152 |
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1153 vsn->retire(cm); |
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1154 } |
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1155 |
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1156 void VirtualSpaceNode::retire(ChunkManager* chunk_manager) { |
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1157 for (int i = (int)MediumIndex; i >= (int)ZeroIndex; --i) { |
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1158 ChunkIndex index = (ChunkIndex)i; |
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1159 size_t chunk_size = chunk_manager->free_chunks(index)->size(); |
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1160 |
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1161 while (free_words_in_vs() >= chunk_size) { |
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1162 DEBUG_ONLY(verify_container_count();) |
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1163 Metachunk* chunk = get_chunk_vs(chunk_size); |
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1164 assert(chunk != NULL, "allocation should have been successful"); |
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1165 |
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1166 chunk_manager->return_chunks(index, chunk); |
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1167 chunk_manager->inc_free_chunks_total(chunk_size); |
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1168 DEBUG_ONLY(verify_container_count();) |
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1169 } |
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1170 } |
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1171 assert(free_words_in_vs() == 0, "should be empty now"); |
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1172 } |
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1173 |
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1174 VirtualSpaceList::VirtualSpaceList(size_t word_size) : |
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1175 _is_class(false), |
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1176 _virtual_space_list(NULL), |
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1177 _current_virtual_space(NULL), |
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1178 _reserved_words(0), |
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1179 _committed_words(0), |
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1180 _virtual_space_count(0) { |
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1181 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1182 Mutex::_no_safepoint_check_flag); |
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1183 create_new_virtual_space(word_size); |
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1184 } |
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1185 |
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1186 VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) : |
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1187 _is_class(true), |
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1188 _virtual_space_list(NULL), |
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1189 _current_virtual_space(NULL), |
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1190 _reserved_words(0), |
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1191 _committed_words(0), |
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1192 _virtual_space_count(0) { |
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1193 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1194 Mutex::_no_safepoint_check_flag); |
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1195 VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs); |
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1196 bool succeeded = class_entry->initialize(); |
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1197 if (succeeded) { |
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1198 link_vs(class_entry); |
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1199 } |
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1200 } |
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1201 |
10183
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1202 size_t VirtualSpaceList::free_bytes() { |
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1203 return virtual_space_list()->free_words_in_vs() * BytesPerWord; |
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1204 } |
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1205 |
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1206 // Allocate another meta virtual space and add it to the list. |
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1207 bool VirtualSpaceList::create_new_virtual_space(size_t vs_word_size) { |
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1208 assert_lock_strong(SpaceManager::expand_lock()); |
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1209 |
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1210 if (is_class()) { |
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1211 assert(false, "We currently don't support more than one VirtualSpace for" |
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1212 " the compressed class space. The initialization of the" |
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1213 " CCS uses another code path and should not hit this path."); |
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1214 return false; |
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1215 } |
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1216 |
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1217 if (vs_word_size == 0) { |
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1218 assert(false, "vs_word_size should always be at least _reserve_alignment large."); |
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1219 return false; |
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1220 } |
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1221 |
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1222 // Reserve the space |
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1223 size_t vs_byte_size = vs_word_size * BytesPerWord; |
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1224 assert_is_size_aligned(vs_byte_size, Metaspace::reserve_alignment()); |
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1225 |
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1226 // Allocate the meta virtual space and initialize it. |
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1227 VirtualSpaceNode* new_entry = new VirtualSpaceNode(vs_byte_size); |
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1228 if (!new_entry->initialize()) { |
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1229 delete new_entry; |
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|
1230 return false; |
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1231 } else { |
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1232 assert(new_entry->reserved_words() == vs_word_size, |
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1233 "Reserved memory size differs from requested memory size"); |
17935
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
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|
1234 // ensure lock-free iteration sees fully initialized node |
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|
1235 OrderAccess::storestore(); |
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1236 link_vs(new_entry); |
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|
1237 return true; |
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|
1238 } |
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|
1239 } |
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|
1240 |
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1241 void VirtualSpaceList::link_vs(VirtualSpaceNode* new_entry) { |
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|
1242 if (virtual_space_list() == NULL) { |
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|
1243 set_virtual_space_list(new_entry); |
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|
1244 } else { |
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|
1245 current_virtual_space()->set_next(new_entry); |
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|
1246 } |
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|
1247 set_current_virtual_space(new_entry); |
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1248 inc_reserved_words(new_entry->reserved_words()); |
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1249 inc_committed_words(new_entry->committed_words()); |
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|
1250 inc_virtual_space_count(); |
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|
1251 #ifdef ASSERT |
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|
1252 new_entry->mangle(); |
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|
1253 #endif |
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|
1254 if (TraceMetavirtualspaceAllocation && Verbose) { |
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|
1255 VirtualSpaceNode* vsl = current_virtual_space(); |
12240
8c5e6482cbfc
8024752: Log TraceMetadata* output to gclog_or_tty instead of tty
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1256 vsl->print_on(gclog_or_tty); |
6725
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|
1257 } |
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|
1258 } |
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|
1259 |
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1260 bool VirtualSpaceList::expand_node_by(VirtualSpaceNode* node, |
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1261 size_t min_words, |
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1262 size_t preferred_words) { |
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1263 size_t before = node->committed_words(); |
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1264 |
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1265 bool result = node->expand_by(min_words, preferred_words); |
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|
1266 |
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1267 size_t after = node->committed_words(); |
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1268 |
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1269 // after and before can be the same if the memory was pre-committed. |
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1270 assert(after >= before, "Inconsistency"); |
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1271 inc_committed_words(after - before); |
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|
1272 |
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|
1273 return result; |
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|
1274 } |
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|
1275 |
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1276 bool VirtualSpaceList::expand_by(size_t min_words, size_t preferred_words) { |
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1277 assert_is_size_aligned(min_words, Metaspace::commit_alignment_words()); |
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1278 assert_is_size_aligned(preferred_words, Metaspace::commit_alignment_words()); |
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1279 assert(min_words <= preferred_words, "Invalid arguments"); |
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1280 |
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1281 if (!MetaspaceGC::can_expand(min_words, this->is_class())) { |
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|
1282 return false; |
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|
1283 } |
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|
1284 |
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1285 size_t allowed_expansion_words = MetaspaceGC::allowed_expansion(); |
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1286 if (allowed_expansion_words < min_words) { |
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1287 return false; |
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|
1288 } |
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|
1289 |
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|
1290 size_t max_expansion_words = MIN2(preferred_words, allowed_expansion_words); |
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|
1291 |
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|
1292 // Commit more memory from the the current virtual space. |
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|
1293 bool vs_expanded = expand_node_by(current_virtual_space(), |
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|
1294 min_words, |
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1295 max_expansion_words); |
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1296 if (vs_expanded) { |
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1297 return true; |
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1298 } |
12979
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1299 retire_current_virtual_space(); |
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1300 |
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1301 // Get another virtual space. |
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1302 size_t grow_vs_words = MAX2((size_t)VirtualSpaceSize, preferred_words); |
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1303 grow_vs_words = align_size_up(grow_vs_words, Metaspace::reserve_alignment_words()); |
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1304 |
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1305 if (create_new_virtual_space(grow_vs_words)) { |
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1306 if (current_virtual_space()->is_pre_committed()) { |
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1307 // The memory was pre-committed, so we are done here. |
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1308 assert(min_words <= current_virtual_space()->committed_words(), |
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1309 "The new VirtualSpace was pre-committed, so it" |
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1310 "should be large enough to fit the alloc request."); |
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1311 return true; |
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1312 } |
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1313 |
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1314 return expand_node_by(current_virtual_space(), |
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1315 min_words, |
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1316 max_expansion_words); |
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1317 } |
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1318 |
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1319 return false; |
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1320 } |
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1321 |
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1322 Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size, |
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1323 size_t grow_chunks_by_words, |
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1324 size_t medium_chunk_bunch) { |
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1325 |
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1326 // Allocate a chunk out of the current virtual space. |
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1327 Metachunk* next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1328 |
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1329 if (next != NULL) { |
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1330 return next; |
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1331 } |
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1332 |
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1333 // The expand amount is currently only determined by the requested sizes |
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1334 // and not how much committed memory is left in the current virtual space. |
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1335 |
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1336 size_t min_word_size = align_size_up(grow_chunks_by_words, Metaspace::commit_alignment_words()); |
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1337 size_t preferred_word_size = align_size_up(medium_chunk_bunch, Metaspace::commit_alignment_words()); |
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1338 if (min_word_size >= preferred_word_size) { |
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1339 // Can happen when humongous chunks are allocated. |
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1340 preferred_word_size = min_word_size; |
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1341 } |
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1342 |
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1343 bool expanded = expand_by(min_word_size, preferred_word_size); |
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1344 if (expanded) { |
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1345 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1346 assert(next != NULL, "The allocation was expected to succeed after the expansion"); |
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1347 } |
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1348 |
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1349 return next; |
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1350 } |
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1351 |
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1352 void VirtualSpaceList::print_on(outputStream* st) const { |
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1353 if (TraceMetadataChunkAllocation && Verbose) { |
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1354 VirtualSpaceListIterator iter(virtual_space_list()); |
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1355 while (iter.repeat()) { |
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1356 VirtualSpaceNode* node = iter.get_next(); |
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1357 node->print_on(st); |
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1358 } |
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1359 } |
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1360 } |
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1361 |
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1362 // MetaspaceGC methods |
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1363 |
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1364 // VM_CollectForMetadataAllocation is the vm operation used to GC. |
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1365 // Within the VM operation after the GC the attempt to allocate the metadata |
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1366 // should succeed. If the GC did not free enough space for the metaspace |
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1367 // allocation, the HWM is increased so that another virtualspace will be |
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1368 // allocated for the metadata. With perm gen the increase in the perm |
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1369 // gen had bounds, MinMetaspaceExpansion and MaxMetaspaceExpansion. The |
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1370 // metaspace policy uses those as the small and large steps for the HWM. |
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1371 // |
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1372 // After the GC the compute_new_size() for MetaspaceGC is called to |
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1373 // resize the capacity of the metaspaces. The current implementation |
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1374 // is based on the flags MinMetaspaceFreeRatio and MaxMetaspaceFreeRatio used |
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1375 // to resize the Java heap by some GC's. New flags can be implemented |
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1376 // if really needed. MinMetaspaceFreeRatio is used to calculate how much |
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1377 // free space is desirable in the metaspace capacity to decide how much |
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1378 // to increase the HWM. MaxMetaspaceFreeRatio is used to decide how much |
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1379 // free space is desirable in the metaspace capacity before decreasing |
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1380 // the HWM. |
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1381 |
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1382 // Calculate the amount to increase the high water mark (HWM). |
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1383 // Increase by a minimum amount (MinMetaspaceExpansion) so that |
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1384 // another expansion is not requested too soon. If that is not |
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1385 // enough to satisfy the allocation, increase by MaxMetaspaceExpansion. |
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1386 // If that is still not enough, expand by the size of the allocation |
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1387 // plus some. |
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1388 size_t MetaspaceGC::delta_capacity_until_GC(size_t bytes) { |
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1389 size_t min_delta = MinMetaspaceExpansion; |
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1390 size_t max_delta = MaxMetaspaceExpansion; |
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1391 size_t delta = align_size_up(bytes, Metaspace::commit_alignment()); |
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1392 |
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1393 if (delta <= min_delta) { |
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1394 delta = min_delta; |
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1395 } else if (delta <= max_delta) { |
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1396 // Don't want to hit the high water mark on the next |
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1397 // allocation so make the delta greater than just enough |
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1398 // for this allocation. |
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1399 delta = max_delta; |
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1400 } else { |
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1401 // This allocation is large but the next ones are probably not |
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1402 // so increase by the minimum. |
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1403 delta = delta + min_delta; |
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1404 } |
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1405 |
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1406 assert_is_size_aligned(delta, Metaspace::commit_alignment()); |
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1407 |
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1408 return delta; |
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1409 } |
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1410 |
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1411 size_t MetaspaceGC::capacity_until_GC() { |
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1412 size_t value = (size_t)OrderAccess::load_ptr_acquire(&_capacity_until_GC); |
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1413 assert(value >= MetaspaceSize, "Not initialied properly?"); |
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1414 return value; |
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1415 } |
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1416 |
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1417 bool MetaspaceGC::inc_capacity_until_GC(size_t v, size_t* new_cap_until_GC, size_t* old_cap_until_GC) { |
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1418 assert_is_size_aligned(v, Metaspace::commit_alignment()); |
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1419 |
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1420 size_t capacity_until_GC = (size_t) _capacity_until_GC; |
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1421 size_t new_value = capacity_until_GC + v; |
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1422 |
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1423 if (new_value < capacity_until_GC) { |
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1424 // The addition wrapped around, set new_value to aligned max value. |
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1425 new_value = align_size_down(max_uintx, Metaspace::commit_alignment()); |
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1426 } |
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1427 |
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1428 intptr_t expected = (intptr_t) capacity_until_GC; |
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1429 intptr_t actual = Atomic::cmpxchg_ptr((intptr_t) new_value, &_capacity_until_GC, expected); |
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1430 |
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1431 if (expected != actual) { |
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1432 return false; |
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1433 } |
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1434 |
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1435 if (new_cap_until_GC != NULL) { |
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1436 *new_cap_until_GC = new_value; |
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1437 } |
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1438 if (old_cap_until_GC != NULL) { |
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1439 *old_cap_until_GC = capacity_until_GC; |
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1440 } |
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1441 return true; |
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1442 } |
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1443 |
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1444 size_t MetaspaceGC::dec_capacity_until_GC(size_t v) { |
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1445 assert_is_size_aligned(v, Metaspace::commit_alignment()); |
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1446 |
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1447 return (size_t)Atomic::add_ptr(-(intptr_t)v, &_capacity_until_GC); |
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1448 } |
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1449 |
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1450 void MetaspaceGC::initialize() { |
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1451 // Set the high-water mark to MaxMetapaceSize during VM initializaton since |
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1452 // we can't do a GC during initialization. |
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1453 _capacity_until_GC = MaxMetaspaceSize; |
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1454 } |
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1455 |
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1456 void MetaspaceGC::post_initialize() { |
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1457 // Reset the high-water mark once the VM initialization is done. |
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1458 _capacity_until_GC = MAX2(MetaspaceAux::committed_bytes(), MetaspaceSize); |
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1459 } |
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1460 |
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1461 bool MetaspaceGC::can_expand(size_t word_size, bool is_class) { |
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1462 // Check if the compressed class space is full. |
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1463 if (is_class && Metaspace::using_class_space()) { |
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1464 size_t class_committed = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
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1465 if (class_committed + word_size * BytesPerWord > CompressedClassSpaceSize) { |
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1466 return false; |
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1467 } |
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1468 } |
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1469 |
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1470 // Check if the user has imposed a limit on the metaspace memory. |
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1471 size_t committed_bytes = MetaspaceAux::committed_bytes(); |
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1472 if (committed_bytes + word_size * BytesPerWord > MaxMetaspaceSize) { |
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1473 return false; |
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1474 } |
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1475 |
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1476 return true; |
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1477 } |
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1478 |
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1479 size_t MetaspaceGC::allowed_expansion() { |
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1480 size_t committed_bytes = MetaspaceAux::committed_bytes(); |
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1481 size_t capacity_until_gc = capacity_until_GC(); |
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1482 |
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1483 assert(capacity_until_gc >= committed_bytes, |
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1484 err_msg("capacity_until_gc: " SIZE_FORMAT " < committed_bytes: " SIZE_FORMAT, |
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1485 capacity_until_gc, committed_bytes)); |
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1486 |
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1487 size_t left_until_max = MaxMetaspaceSize - committed_bytes; |
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1488 size_t left_until_GC = capacity_until_gc - committed_bytes; |
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1489 size_t left_to_commit = MIN2(left_until_GC, left_until_max); |
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1490 |
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1491 return left_to_commit / BytesPerWord; |
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1492 } |
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1493 |
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1494 void MetaspaceGC::compute_new_size() { |
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1495 assert(_shrink_factor <= 100, "invalid shrink factor"); |
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1496 uint current_shrink_factor = _shrink_factor; |
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1497 _shrink_factor = 0; |
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1498 |
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1499 // Using committed_bytes() for used_after_gc is an overestimation, since the |
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1500 // chunk free lists are included in committed_bytes() and the memory in an |
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1501 // un-fragmented chunk free list is available for future allocations. |
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1502 // However, if the chunk free lists becomes fragmented, then the memory may |
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1503 // not be available for future allocations and the memory is therefore "in use". |
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1504 // Including the chunk free lists in the definition of "in use" is therefore |
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1505 // necessary. Not including the chunk free lists can cause capacity_until_GC to |
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1506 // shrink below committed_bytes() and this has caused serious bugs in the past. |
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1507 const size_t used_after_gc = MetaspaceAux::committed_bytes(); |
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1508 const size_t capacity_until_GC = MetaspaceGC::capacity_until_GC(); |
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1509 |
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1510 const double minimum_free_percentage = MinMetaspaceFreeRatio / 100.0; |
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1511 const double maximum_used_percentage = 1.0 - minimum_free_percentage; |
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1512 |
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1513 const double min_tmp = used_after_gc / maximum_used_percentage; |
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1514 size_t minimum_desired_capacity = |
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1515 (size_t)MIN2(min_tmp, double(max_uintx)); |
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1516 // Don't shrink less than the initial generation size |
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1517 minimum_desired_capacity = MAX2(minimum_desired_capacity, |
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1518 MetaspaceSize); |
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1519 |
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1520 if (PrintGCDetails && Verbose) { |
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1521 gclog_or_tty->print_cr("\nMetaspaceGC::compute_new_size: "); |
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1522 gclog_or_tty->print_cr(" " |
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1523 " minimum_free_percentage: %6.2f" |
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1524 " maximum_used_percentage: %6.2f", |
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1525 minimum_free_percentage, |
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1526 maximum_used_percentage); |
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1527 gclog_or_tty->print_cr(" " |
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1528 " used_after_gc : %6.1fKB", |
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1529 used_after_gc / (double) K); |
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1530 } |
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1531 |
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1532 |
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1533 size_t shrink_bytes = 0; |
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1534 if (capacity_until_GC < minimum_desired_capacity) { |
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1535 // If we have less capacity below the metaspace HWM, then |
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1536 // increment the HWM. |
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1537 size_t expand_bytes = minimum_desired_capacity - capacity_until_GC; |
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|
1538 expand_bytes = align_size_up(expand_bytes, Metaspace::commit_alignment()); |
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1539 // Don't expand unless it's significant |
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|
1540 if (expand_bytes >= MinMetaspaceExpansion) { |
20540
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
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|
1541 size_t new_capacity_until_GC = 0; |
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|
1542 bool succeeded = MetaspaceGC::inc_capacity_until_GC(expand_bytes, &new_capacity_until_GC); |
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|
1543 assert(succeeded, "Should always succesfully increment HWM when at safepoint"); |
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|
1544 |
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|
1545 Metaspace::tracer()->report_gc_threshold(capacity_until_GC, |
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|
1546 new_capacity_until_GC, |
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diff
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|
1547 MetaspaceGCThresholdUpdater::ComputeNewSize); |
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|
1548 if (PrintGCDetails && Verbose) { |
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|
1549 gclog_or_tty->print_cr(" expanding:" |
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|
1550 " minimum_desired_capacity: %6.1fKB" |
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|
1551 " expand_bytes: %6.1fKB" |
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diff
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|
1552 " MinMetaspaceExpansion: %6.1fKB" |
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|
1553 " new metaspace HWM: %6.1fKB", |
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|
1554 minimum_desired_capacity / (double) K, |
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|
1555 expand_bytes / (double) K, |
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17695
diff
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|
1556 MinMetaspaceExpansion / (double) K, |
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|
1557 new_capacity_until_GC / (double) K); |
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|
1558 } |
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|
1559 } |
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|
1560 return; |
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diff
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|
1561 } |
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|
1562 |
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|
1563 // No expansion, now see if we want to shrink |
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1564 // We would never want to shrink more than this |
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1565 size_t max_shrink_bytes = capacity_until_GC - minimum_desired_capacity; |
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1566 assert(max_shrink_bytes >= 0, err_msg("max_shrink_bytes " SIZE_FORMAT, |
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|
1567 max_shrink_bytes)); |
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|
1568 |
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|
1569 // Should shrinking be considered? |
8040
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
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8007
diff
changeset
|
1570 if (MaxMetaspaceFreeRatio < 100) { |
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
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8007
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|
1571 const double maximum_free_percentage = MaxMetaspaceFreeRatio / 100.0; |
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1572 const double minimum_used_percentage = 1.0 - maximum_free_percentage; |
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1573 const double max_tmp = used_after_gc / minimum_used_percentage; |
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1574 size_t maximum_desired_capacity = (size_t)MIN2(max_tmp, double(max_uintx)); |
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1575 maximum_desired_capacity = MAX2(maximum_desired_capacity, |
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1576 MetaspaceSize); |
10183
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1577 if (PrintGCDetails && Verbose) { |
6725
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|
1578 gclog_or_tty->print_cr(" " |
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|
1579 " maximum_free_percentage: %6.2f" |
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|
1580 " minimum_used_percentage: %6.2f", |
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|
1581 maximum_free_percentage, |
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|
1582 minimum_used_percentage); |
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|
1583 gclog_or_tty->print_cr(" " |
10183
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1584 " minimum_desired_capacity: %6.1fKB" |
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|
1585 " maximum_desired_capacity: %6.1fKB", |
6725
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|
1586 minimum_desired_capacity / (double) K, |
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|
1587 maximum_desired_capacity / (double) K); |
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|
1588 } |
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|
1589 |
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|
1590 assert(minimum_desired_capacity <= maximum_desired_capacity, |
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|
1591 "sanity check"); |
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|
1592 |
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|
1593 if (capacity_until_GC > maximum_desired_capacity) { |
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1594 // Capacity too large, compute shrinking size |
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1595 shrink_bytes = capacity_until_GC - maximum_desired_capacity; |
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1596 // We don't want shrink all the way back to initSize if people call |
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1597 // System.gc(), because some programs do that between "phases" and then |
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1598 // we'd just have to grow the heap up again for the next phase. So we |
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|
1599 // damp the shrinking: 0% on the first call, 10% on the second call, 40% |
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1600 // on the third call, and 100% by the fourth call. But if we recompute |
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1601 // size without shrinking, it goes back to 0%. |
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|
1602 shrink_bytes = shrink_bytes / 100 * current_shrink_factor; |
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|
1603 |
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|
1604 shrink_bytes = align_size_down(shrink_bytes, Metaspace::commit_alignment()); |
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|
1605 |
10183
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|
1606 assert(shrink_bytes <= max_shrink_bytes, |
6725
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|
1607 err_msg("invalid shrink size " SIZE_FORMAT " not <= " SIZE_FORMAT, |
10183
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|
1608 shrink_bytes, max_shrink_bytes)); |
6725
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|
1609 if (current_shrink_factor == 0) { |
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|
1610 _shrink_factor = 10; |
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|
1611 } else { |
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|
1612 _shrink_factor = MIN2(current_shrink_factor * 4, (uint) 100); |
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|
1613 } |
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|
1614 if (PrintGCDetails && Verbose) { |
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|
1615 gclog_or_tty->print_cr(" " |
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|
1616 " shrinking:" |
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|
1617 " initSize: %.1fK" |
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|
1618 " maximum_desired_capacity: %.1fK", |
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|
1619 MetaspaceSize / (double) K, |
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|
1620 maximum_desired_capacity / (double) K); |
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|
1621 gclog_or_tty->print_cr(" " |
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|
1622 " shrink_bytes: %.1fK" |
6725
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|
1623 " current_shrink_factor: %d" |
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|
1624 " new shrink factor: %d" |
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|
1625 " MinMetaspaceExpansion: %.1fK", |
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|
1626 shrink_bytes / (double) K, |
6725
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|
1627 current_shrink_factor, |
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|
1628 _shrink_factor, |
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|
1629 MinMetaspaceExpansion / (double) K); |
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|
1630 } |
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|
1631 } |
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|
1632 } |
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|
1633 |
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|
1634 // Don't shrink unless it's significant |
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|
1635 if (shrink_bytes >= MinMetaspaceExpansion && |
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|
1636 ((capacity_until_GC - shrink_bytes) >= MetaspaceSize)) { |
17768
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|
1637 size_t new_capacity_until_GC = MetaspaceGC::dec_capacity_until_GC(shrink_bytes); |
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|
1638 Metaspace::tracer()->report_gc_threshold(capacity_until_GC, |
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|
1639 new_capacity_until_GC, |
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|
1640 MetaspaceGCThresholdUpdater::ComputeNewSize); |
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|
1641 } |
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|
1642 } |
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|
1643 |
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|
1644 // Metadebug methods |
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|
1645 |
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|
1646 void Metadebug::init_allocation_fail_alot_count() { |
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diff
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|
1647 if (MetadataAllocationFailALot) { |
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|
1648 _allocation_fail_alot_count = |
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diff
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|
1649 1+(long)((double)MetadataAllocationFailALotInterval*os::random()/(max_jint+1.0)); |
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|
1650 } |
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|
1651 } |
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|
1652 |
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|
1653 #ifdef ASSERT |
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|
1654 bool Metadebug::test_metadata_failure() { |
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diff
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|
1655 if (MetadataAllocationFailALot && |
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diff
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|
1656 Threads::is_vm_complete()) { |
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|
1657 if (_allocation_fail_alot_count > 0) { |
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parents:
diff
changeset
|
1658 _allocation_fail_alot_count--; |
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diff
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|
1659 } else { |
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|
1660 if (TraceMetadataChunkAllocation && Verbose) { |
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parents:
diff
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|
1661 gclog_or_tty->print_cr("Metadata allocation failing for " |
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|
1662 "MetadataAllocationFailALot"); |
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|
1663 } |
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1664 init_allocation_fail_alot_count(); |
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|
1665 return true; |
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|
1666 } |
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|
1667 } |
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|
1668 return false; |
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|
1669 } |
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|
1670 #endif |
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|
1671 |
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1672 // ChunkManager methods |
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1673 |
12235 | 1674 size_t ChunkManager::free_chunks_total_words() { |
6725
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1675 return _free_chunks_total; |
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|
1676 } |
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|
1677 |
12235 | 1678 size_t ChunkManager::free_chunks_total_bytes() { |
1679 return free_chunks_total_words() * BytesPerWord; | |
6725
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|
1680 } |
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|
1681 |
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1682 size_t ChunkManager::free_chunks_count() { |
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|
1683 #ifdef ASSERT |
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1684 if (!UseConcMarkSweepGC && !SpaceManager::expand_lock()->is_locked()) { |
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1685 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1686 Mutex::_no_safepoint_check_flag); |
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1687 // This lock is only needed in debug because the verification |
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1688 // of the _free_chunks_totals walks the list of free chunks |
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1689 slow_locked_verify_free_chunks_count(); |
6725
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1690 } |
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1691 #endif |
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1692 return _free_chunks_count; |
6725
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|
1693 } |
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|
1694 |
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1695 void ChunkManager::locked_verify_free_chunks_total() { |
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1696 assert_lock_strong(SpaceManager::expand_lock()); |
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1697 assert(sum_free_chunks() == _free_chunks_total, |
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1698 err_msg("_free_chunks_total " SIZE_FORMAT " is not the" |
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1699 " same as sum " SIZE_FORMAT, _free_chunks_total, |
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1700 sum_free_chunks())); |
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|
1701 } |
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|
1702 |
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1703 void ChunkManager::verify_free_chunks_total() { |
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1704 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1705 Mutex::_no_safepoint_check_flag); |
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1706 locked_verify_free_chunks_total(); |
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|
1707 } |
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|
1708 |
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1709 void ChunkManager::locked_verify_free_chunks_count() { |
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1710 assert_lock_strong(SpaceManager::expand_lock()); |
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1711 assert(sum_free_chunks_count() == _free_chunks_count, |
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1712 err_msg("_free_chunks_count " SIZE_FORMAT " is not the" |
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1713 " same as sum " SIZE_FORMAT, _free_chunks_count, |
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|
1714 sum_free_chunks_count())); |
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|
1715 } |
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|
1716 |
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|
1717 void ChunkManager::verify_free_chunks_count() { |
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|
1718 #ifdef ASSERT |
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1719 MutexLockerEx cl(SpaceManager::expand_lock(), |
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|
1720 Mutex::_no_safepoint_check_flag); |
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|
1721 locked_verify_free_chunks_count(); |
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|
1722 #endif |
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|
1723 } |
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|
1724 |
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|
1725 void ChunkManager::verify() { |
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|
1726 MutexLockerEx cl(SpaceManager::expand_lock(), |
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|
1727 Mutex::_no_safepoint_check_flag); |
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|
1728 locked_verify(); |
6725
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|
1729 } |
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|
1730 |
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|
1731 void ChunkManager::locked_verify() { |
6885 | 1732 locked_verify_free_chunks_count(); |
6725
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|
1733 locked_verify_free_chunks_total(); |
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|
1734 } |
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|
1735 |
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|
1736 void ChunkManager::locked_print_free_chunks(outputStream* st) { |
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|
1737 assert_lock_strong(SpaceManager::expand_lock()); |
7446
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1738 st->print_cr("Free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1739 _free_chunks_total, _free_chunks_count); |
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|
1740 } |
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|
1741 |
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1742 void ChunkManager::locked_print_sum_free_chunks(outputStream* st) { |
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|
1743 assert_lock_strong(SpaceManager::expand_lock()); |
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1744 st->print_cr("Sum free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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|
1745 sum_free_chunks(), sum_free_chunks_count()); |
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|
1746 } |
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|
1747 ChunkList* ChunkManager::free_chunks(ChunkIndex index) { |
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|
1748 return &_free_chunks[index]; |
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|
1749 } |
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|
1750 |
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1751 // These methods that sum the free chunk lists are used in printing |
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|
1752 // methods that are used in product builds. |
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|
1753 size_t ChunkManager::sum_free_chunks() { |
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|
1754 assert_lock_strong(SpaceManager::expand_lock()); |
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|
1755 size_t result = 0; |
7446
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1756 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
6725
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|
1757 ChunkList* list = free_chunks(i); |
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|
1758 |
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|
1759 if (list == NULL) { |
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|
1760 continue; |
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|
1761 } |
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|
1762 |
10101
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|
1763 result = result + list->count() * list->size(); |
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1764 } |
6885 | 1765 result = result + humongous_dictionary()->total_size(); |
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|
1766 return result; |
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|
1767 } |
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|
1768 |
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|
1769 size_t ChunkManager::sum_free_chunks_count() { |
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|
1770 assert_lock_strong(SpaceManager::expand_lock()); |
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|
1771 size_t count = 0; |
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1772 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
6725
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1773 ChunkList* list = free_chunks(i); |
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1774 if (list == NULL) { |
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|
1775 continue; |
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|
1776 } |
10101
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|
1777 count = count + list->count(); |
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|
1778 } |
6885 | 1779 count = count + humongous_dictionary()->total_free_blocks(); |
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|
1780 return count; |
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|
1781 } |
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|
1782 |
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|
1783 ChunkList* ChunkManager::find_free_chunks_list(size_t word_size) { |
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1784 ChunkIndex index = list_index(word_size); |
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1785 assert(index < HumongousIndex, "No humongous list"); |
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1786 return free_chunks(index); |
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|
1787 } |
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|
1788 |
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|
1789 Metachunk* ChunkManager::free_chunks_get(size_t word_size) { |
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|
1790 assert_lock_strong(SpaceManager::expand_lock()); |
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|
1791 |
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|
1792 slow_locked_verify(); |
6885 | 1793 |
1794 Metachunk* chunk = NULL; | |
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1795 if (list_index(word_size) != HumongousIndex) { |
6885 | 1796 ChunkList* free_list = find_free_chunks_list(word_size); |
1797 assert(free_list != NULL, "Sanity check"); | |
1798 | |
1799 chunk = free_list->head(); | |
1800 | |
1801 if (chunk == NULL) { | |
1802 return NULL; | |
1803 } | |
1804 | |
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1805 // Remove the chunk as the head of the list. |
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1806 free_list->remove_chunk(chunk); |
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1807 |
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1808 if (TraceMetadataChunkAllocation && Verbose) { |
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1809 gclog_or_tty->print_cr("ChunkManager::free_chunks_get: free_list " |
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1810 PTR_FORMAT " head " PTR_FORMAT " size " SIZE_FORMAT, |
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1811 free_list, chunk, chunk->word_size()); |
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1812 } |
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1813 } else { |
6885 | 1814 chunk = humongous_dictionary()->get_chunk( |
1815 word_size, | |
1816 FreeBlockDictionary<Metachunk>::atLeast); | |
1817 | |
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1818 if (chunk == NULL) { |
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1819 return NULL; |
6885 | 1820 } |
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1821 |
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1822 if (TraceMetadataHumongousAllocation) { |
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1823 size_t waste = chunk->word_size() - word_size; |
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1824 gclog_or_tty->print_cr("Free list allocate humongous chunk size " |
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1825 SIZE_FORMAT " for requested size " SIZE_FORMAT |
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1826 " waste " SIZE_FORMAT, |
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1827 chunk->word_size(), word_size, waste); |
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1828 } |
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1829 } |
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1830 |
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1831 // Chunk is being removed from the chunks free list. |
12902 | 1832 dec_free_chunks_total(chunk->word_size()); |
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1833 |
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1834 // Remove it from the links to this freelist |
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1835 chunk->set_next(NULL); |
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1836 chunk->set_prev(NULL); |
10175 | 1837 #ifdef ASSERT |
1838 // Chunk is no longer on any freelist. Setting to false make container_count_slow() | |
1839 // work. | |
12902 | 1840 chunk->set_is_tagged_free(false); |
10175 | 1841 #endif |
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1842 chunk->container()->inc_container_count(); |
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1843 |
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1844 slow_locked_verify(); |
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1845 return chunk; |
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1846 } |
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1847 |
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1848 Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) { |
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1849 assert_lock_strong(SpaceManager::expand_lock()); |
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1850 slow_locked_verify(); |
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1851 |
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1852 // Take from the beginning of the list |
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1853 Metachunk* chunk = free_chunks_get(word_size); |
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1854 if (chunk == NULL) { |
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1855 return NULL; |
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1856 } |
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1857 |
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1858 assert((word_size <= chunk->word_size()) || |
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1859 list_index(chunk->word_size() == HumongousIndex), |
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1860 "Non-humongous variable sized chunk"); |
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1861 if (TraceMetadataChunkAllocation) { |
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1862 size_t list_count; |
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1863 if (list_index(word_size) < HumongousIndex) { |
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1864 ChunkList* list = find_free_chunks_list(word_size); |
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1865 list_count = list->count(); |
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1866 } else { |
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1867 list_count = humongous_dictionary()->total_count(); |
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1868 } |
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1869 gclog_or_tty->print("ChunkManager::chunk_freelist_allocate: " PTR_FORMAT " chunk " |
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1870 PTR_FORMAT " size " SIZE_FORMAT " count " SIZE_FORMAT " ", |
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1871 this, chunk, chunk->word_size(), list_count); |
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1872 locked_print_free_chunks(gclog_or_tty); |
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1873 } |
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1874 |
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1875 return chunk; |
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1876 } |
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1877 |
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1878 void ChunkManager::print_on(outputStream* out) const { |
6885 | 1879 if (PrintFLSStatistics != 0) { |
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1880 const_cast<ChunkManager *>(this)->humongous_dictionary()->report_statistics(); |
6885 | 1881 } |
1882 } | |
1883 | |
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1884 // SpaceManager methods |
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1885 |
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1886 void SpaceManager::get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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1887 size_t* chunk_word_size, |
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1888 size_t* class_chunk_word_size) { |
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1889 switch (type) { |
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1890 case Metaspace::BootMetaspaceType: |
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1891 *chunk_word_size = Metaspace::first_chunk_word_size(); |
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1892 *class_chunk_word_size = Metaspace::first_class_chunk_word_size(); |
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1893 break; |
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1894 case Metaspace::ROMetaspaceType: |
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1895 *chunk_word_size = SharedReadOnlySize / wordSize; |
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1896 *class_chunk_word_size = ClassSpecializedChunk; |
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1897 break; |
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1898 case Metaspace::ReadWriteMetaspaceType: |
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1899 *chunk_word_size = SharedReadWriteSize / wordSize; |
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1900 *class_chunk_word_size = ClassSpecializedChunk; |
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1901 break; |
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1902 case Metaspace::AnonymousMetaspaceType: |
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1903 case Metaspace::ReflectionMetaspaceType: |
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1904 *chunk_word_size = SpecializedChunk; |
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1905 *class_chunk_word_size = ClassSpecializedChunk; |
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1906 break; |
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1907 default: |
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1908 *chunk_word_size = SmallChunk; |
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1909 *class_chunk_word_size = ClassSmallChunk; |
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1910 break; |
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1911 } |
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1912 assert(*chunk_word_size != 0 && *class_chunk_word_size != 0, |
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1913 err_msg("Initial chunks sizes bad: data " SIZE_FORMAT |
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1914 " class " SIZE_FORMAT, |
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1915 *chunk_word_size, *class_chunk_word_size)); |
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1916 } |
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1917 |
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1918 size_t SpaceManager::sum_free_in_chunks_in_use() const { |
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1919 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1920 size_t free = 0; |
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1921 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1922 Metachunk* chunk = chunks_in_use(i); |
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1923 while (chunk != NULL) { |
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1924 free += chunk->free_word_size(); |
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1925 chunk = chunk->next(); |
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1926 } |
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1927 } |
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1928 return free; |
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1929 } |
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1930 |
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1931 size_t SpaceManager::sum_waste_in_chunks_in_use() const { |
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1932 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1933 size_t result = 0; |
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1934 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1935 result += sum_waste_in_chunks_in_use(i); |
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1936 } |
6885 | 1937 |
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1938 return result; |
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1939 } |
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1940 |
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1941 size_t SpaceManager::sum_waste_in_chunks_in_use(ChunkIndex index) const { |
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1942 size_t result = 0; |
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1943 Metachunk* chunk = chunks_in_use(index); |
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1944 // Count the free space in all the chunk but not the |
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1945 // current chunk from which allocations are still being done. |
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1946 while (chunk != NULL) { |
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1947 if (chunk != current_chunk()) { |
6885 | 1948 result += chunk->free_word_size(); |
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1949 } |
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1950 chunk = chunk->next(); |
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1951 } |
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1952 return result; |
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1953 } |
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1954 |
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1955 size_t SpaceManager::sum_capacity_in_chunks_in_use() const { |
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1956 // For CMS use "allocated_chunks_words()" which does not need the |
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1957 // Metaspace lock. For the other collectors sum over the |
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1958 // lists. Use both methods as a check that "allocated_chunks_words()" |
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1959 // is correct. That is, sum_capacity_in_chunks() is too expensive |
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1960 // to use in the product and allocated_chunks_words() should be used |
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1961 // but allow for checking that allocated_chunks_words() returns the same |
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1962 // value as sum_capacity_in_chunks_in_use() which is the definitive |
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1963 // answer. |
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1964 if (UseConcMarkSweepGC) { |
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1965 return allocated_chunks_words(); |
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1966 } else { |
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1967 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1968 size_t sum = 0; |
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1969 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1970 Metachunk* chunk = chunks_in_use(i); |
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1971 while (chunk != NULL) { |
12902 | 1972 sum += chunk->word_size(); |
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1973 chunk = chunk->next(); |
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1974 } |
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1975 } |
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1976 return sum; |
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1977 } |
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1978 } |
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1979 |
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1980 size_t SpaceManager::sum_count_in_chunks_in_use() { |
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1981 size_t count = 0; |
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1982 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1983 count = count + sum_count_in_chunks_in_use(i); |
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1984 } |
6885 | 1985 |
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1986 return count; |
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1987 } |
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1988 |
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1989 size_t SpaceManager::sum_count_in_chunks_in_use(ChunkIndex i) { |
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1990 size_t count = 0; |
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1991 Metachunk* chunk = chunks_in_use(i); |
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1992 while (chunk != NULL) { |
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1993 count++; |
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1994 chunk = chunk->next(); |
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1995 } |
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1996 return count; |
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1997 } |
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1998 |
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1999 |
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2000 size_t SpaceManager::sum_used_in_chunks_in_use() const { |
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2001 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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2002 size_t used = 0; |
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2003 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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2004 Metachunk* chunk = chunks_in_use(i); |
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2005 while (chunk != NULL) { |
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2006 used += chunk->used_word_size(); |
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2007 chunk = chunk->next(); |
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2008 } |
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2009 } |
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2010 return used; |
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2011 } |
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2012 |
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2013 void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const { |
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2014 |
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2015 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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2016 Metachunk* chunk = chunks_in_use(i); |
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2017 st->print("SpaceManager: %s " PTR_FORMAT, |
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2018 chunk_size_name(i), chunk); |
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2019 if (chunk != NULL) { |
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2020 st->print_cr(" free " SIZE_FORMAT, |
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2021 chunk->free_word_size()); |
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2022 } else { |
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2023 st->cr(); |
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2024 } |
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2025 } |
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2026 |
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2027 chunk_manager()->locked_print_free_chunks(st); |
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2028 chunk_manager()->locked_print_sum_free_chunks(st); |
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2029 } |
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2030 |
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2031 size_t SpaceManager::calc_chunk_size(size_t word_size) { |
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2032 |
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2033 // Decide between a small chunk and a medium chunk. Up to |
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2034 // _small_chunk_limit small chunks can be allocated but |
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2035 // once a medium chunk has been allocated, no more small |
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2036 // chunks will be allocated. |
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2037 size_t chunk_word_size; |
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2038 if (chunks_in_use(MediumIndex) == NULL && |
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2039 sum_count_in_chunks_in_use(SmallIndex) < _small_chunk_limit) { |
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2040 chunk_word_size = (size_t) small_chunk_size(); |
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2041 if (word_size + Metachunk::overhead() > small_chunk_size()) { |
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2042 chunk_word_size = medium_chunk_size(); |
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2043 } |
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2044 } else { |
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2045 chunk_word_size = medium_chunk_size(); |
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2046 } |
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2047 |
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2048 // Might still need a humongous chunk. Enforce |
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2049 // humongous allocations sizes to be aligned up to |
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2050 // the smallest chunk size. |
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2051 size_t if_humongous_sized_chunk = |
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2052 align_size_up(word_size + Metachunk::overhead(), |
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2053 smallest_chunk_size()); |
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2054 chunk_word_size = |
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2055 MAX2((size_t) chunk_word_size, if_humongous_sized_chunk); |
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2056 |
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2057 assert(!SpaceManager::is_humongous(word_size) || |
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2058 chunk_word_size == if_humongous_sized_chunk, |
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2059 err_msg("Size calculation is wrong, word_size " SIZE_FORMAT |
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2060 " chunk_word_size " SIZE_FORMAT, |
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2061 word_size, chunk_word_size)); |
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2062 if (TraceMetadataHumongousAllocation && |
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2063 SpaceManager::is_humongous(word_size)) { |
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2064 gclog_or_tty->print_cr("Metadata humongous allocation:"); |
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2065 gclog_or_tty->print_cr(" word_size " PTR_FORMAT, word_size); |
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2066 gclog_or_tty->print_cr(" chunk_word_size " PTR_FORMAT, |
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2067 chunk_word_size); |
6885 | 2068 gclog_or_tty->print_cr(" chunk overhead " PTR_FORMAT, |
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2069 Metachunk::overhead()); |
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2070 } |
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2071 return chunk_word_size; |
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2072 } |
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2073 |
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2074 void SpaceManager::track_metaspace_memory_usage() { |
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2075 if (is_init_completed()) { |
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2076 if (is_class()) { |
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2077 MemoryService::track_compressed_class_memory_usage(); |
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2078 } |
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2079 MemoryService::track_metaspace_memory_usage(); |
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2080 } |
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2081 } |
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2082 |
6885 | 2083 MetaWord* SpaceManager::grow_and_allocate(size_t word_size) { |
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2084 assert(vs_list()->current_virtual_space() != NULL, |
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2085 "Should have been set"); |
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2086 assert(current_chunk() == NULL || |
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2087 current_chunk()->allocate(word_size) == NULL, |
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2088 "Don't need to expand"); |
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2089 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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2090 |
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2091 if (TraceMetadataChunkAllocation && Verbose) { |
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2092 size_t words_left = 0; |
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2093 size_t words_used = 0; |
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2094 if (current_chunk() != NULL) { |
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2095 words_left = current_chunk()->free_word_size(); |
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2096 words_used = current_chunk()->used_word_size(); |
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2097 } |
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2098 gclog_or_tty->print_cr("SpaceManager::grow_and_allocate for " SIZE_FORMAT |
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2099 " words " SIZE_FORMAT " words used " SIZE_FORMAT |
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2100 " words left", |
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2101 word_size, words_used, words_left); |
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2102 } |
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2103 |
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2104 // Get another chunk out of the virtual space |
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2105 size_t grow_chunks_by_words = calc_chunk_size(word_size); |
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2106 Metachunk* next = get_new_chunk(word_size, grow_chunks_by_words); |
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2107 |
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2108 MetaWord* mem = NULL; |
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2109 |
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2110 // If a chunk was available, add it to the in-use chunk list |
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2111 // and do an allocation from it. |
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2112 if (next != NULL) { |
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2113 // Add to this manager's list of chunks in use. |
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2114 add_chunk(next, false); |
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2115 mem = next->allocate(word_size); |
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2116 } |
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2117 |
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2118 // Track metaspace memory usage statistic. |
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2119 track_metaspace_memory_usage(); |
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2120 |
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2121 return mem; |
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2122 } |
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2123 |
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2124 void SpaceManager::print_on(outputStream* st) const { |
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2125 |
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2126 for (ChunkIndex i = ZeroIndex; |
6885 | 2127 i < NumberOfInUseLists ; |
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2128 i = next_chunk_index(i) ) { |
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2129 st->print_cr(" chunks_in_use " PTR_FORMAT " chunk size " PTR_FORMAT, |
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2130 chunks_in_use(i), |
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2131 chunks_in_use(i) == NULL ? 0 : chunks_in_use(i)->word_size()); |
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2132 } |
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2133 st->print_cr(" waste: Small " SIZE_FORMAT " Medium " SIZE_FORMAT |
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2134 " Humongous " SIZE_FORMAT, |
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2135 sum_waste_in_chunks_in_use(SmallIndex), |
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2136 sum_waste_in_chunks_in_use(MediumIndex), |
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2137 sum_waste_in_chunks_in_use(HumongousIndex)); |
6885 | 2138 // block free lists |
2139 if (block_freelists() != NULL) { | |
2140 st->print_cr("total in block free lists " SIZE_FORMAT, | |
2141 block_freelists()->total_size()); | |
2142 } | |
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2143 } |
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2144 |
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2145 SpaceManager::SpaceManager(Metaspace::MetadataType mdtype, |
12303
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2146 Mutex* lock) : |
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2147 _mdtype(mdtype), |
10183
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2148 _allocated_blocks_words(0), |
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2149 _allocated_chunks_words(0), |
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2150 _allocated_chunks_count(0), |
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2151 _lock(lock) |
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|
2152 { |
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|
2153 initialize(); |
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|
2154 } |
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|
2155 |
10183
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2156 void SpaceManager::inc_size_metrics(size_t words) { |
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2157 assert_lock_strong(SpaceManager::expand_lock()); |
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2158 // Total of allocated Metachunks and allocated Metachunks count |
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2159 // for each SpaceManager |
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2160 _allocated_chunks_words = _allocated_chunks_words + words; |
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2161 _allocated_chunks_count++; |
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2162 // Global total of capacity in allocated Metachunks |
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2163 MetaspaceAux::inc_capacity(mdtype(), words); |
10183
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2164 // Global total of allocated Metablocks. |
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2165 // used_words_slow() includes the overhead in each |
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2166 // Metachunk so include it in the used when the |
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2167 // Metachunk is first added (so only added once per |
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2168 // Metachunk). |
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2169 MetaspaceAux::inc_used(mdtype(), Metachunk::overhead()); |
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2170 } |
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2171 |
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2172 void SpaceManager::inc_used_metrics(size_t words) { |
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2173 // Add to the per SpaceManager total |
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2174 Atomic::add_ptr(words, &_allocated_blocks_words); |
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2175 // Add to the global total |
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2176 MetaspaceAux::inc_used(mdtype(), words); |
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2177 } |
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|
2178 |
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2179 void SpaceManager::dec_total_from_size_metrics() { |
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2180 MetaspaceAux::dec_capacity(mdtype(), allocated_chunks_words()); |
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2181 MetaspaceAux::dec_used(mdtype(), allocated_blocks_words()); |
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2182 // Also deduct the overhead per Metachunk |
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2183 MetaspaceAux::dec_used(mdtype(), allocated_chunks_count() * Metachunk::overhead()); |
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2184 } |
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2185 |
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2186 void SpaceManager::initialize() { |
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2187 Metadebug::init_allocation_fail_alot_count(); |
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2188 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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2189 _chunks_in_use[i] = NULL; |
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|
2190 } |
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|
2191 _current_chunk = NULL; |
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2192 if (TraceMetadataChunkAllocation && Verbose) { |
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2193 gclog_or_tty->print_cr("SpaceManager(): " PTR_FORMAT, this); |
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|
2194 } |
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2195 } |
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2196 |
10101
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2197 void ChunkManager::return_chunks(ChunkIndex index, Metachunk* chunks) { |
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2198 if (chunks == NULL) { |
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2199 return; |
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|
2200 } |
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2201 ChunkList* list = free_chunks(index); |
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2202 assert(list->size() == chunks->word_size(), "Mismatch in chunk sizes"); |
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2203 assert_lock_strong(SpaceManager::expand_lock()); |
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2204 Metachunk* cur = chunks; |
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2205 |
10175 | 2206 // This returns chunks one at a time. If a new |
10101
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2207 // class List can be created that is a base class |
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2208 // of FreeList then something like FreeList::prepend() |
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2209 // can be used in place of this loop |
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2210 while (cur != NULL) { |
10175 | 2211 assert(cur->container() != NULL, "Container should have been set"); |
2212 cur->container()->dec_container_count(); | |
10101
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2213 // Capture the next link before it is changed |
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2214 // by the call to return_chunk_at_head(); |
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2215 Metachunk* next = cur->next(); |
12902 | 2216 DEBUG_ONLY(cur->set_is_tagged_free(true);) |
10101
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2217 list->return_chunk_at_head(cur); |
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2218 cur = next; |
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2219 } |
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2220 } |
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2221 |
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2222 SpaceManager::~SpaceManager() { |
8784
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2223 // This call this->_lock which can't be done while holding expand_lock() |
10183
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2224 assert(sum_capacity_in_chunks_in_use() == allocated_chunks_words(), |
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2225 err_msg("sum_capacity_in_chunks_in_use() " SIZE_FORMAT |
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2226 " allocated_chunks_words() " SIZE_FORMAT, |
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2227 sum_capacity_in_chunks_in_use(), allocated_chunks_words())); |
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2228 |
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2229 MutexLockerEx fcl(SpaceManager::expand_lock(), |
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2230 Mutex::_no_safepoint_check_flag); |
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2231 |
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2232 chunk_manager()->slow_locked_verify(); |
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2233 |
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|
2234 dec_total_from_size_metrics(); |
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2235 |
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2236 if (TraceMetadataChunkAllocation && Verbose) { |
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2237 gclog_or_tty->print_cr("~SpaceManager(): " PTR_FORMAT, this); |
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2238 locked_print_chunks_in_use_on(gclog_or_tty); |
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2239 } |
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2240 |
10175 | 2241 // Do not mangle freed Metachunks. The chunk size inside Metachunks |
2242 // is during the freeing of a VirtualSpaceNodes. | |
7185
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2243 |
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2244 // Have to update before the chunks_in_use lists are emptied |
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2245 // below. |
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2246 chunk_manager()->inc_free_chunks_total(allocated_chunks_words(), |
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2247 sum_count_in_chunks_in_use()); |
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2248 |
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2249 // Add all the chunks in use by this space manager |
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2250 // to the global list of free chunks. |
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2251 |
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2252 // Follow each list of chunks-in-use and add them to the |
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2253 // free lists. Each list is NULL terminated. |
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2254 |
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2255 for (ChunkIndex i = ZeroIndex; i < HumongousIndex; i = next_chunk_index(i)) { |
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2256 if (TraceMetadataChunkAllocation && Verbose) { |
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2257 gclog_or_tty->print_cr("returned %d %s chunks to freelist", |
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2258 sum_count_in_chunks_in_use(i), |
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2259 chunk_size_name(i)); |
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2260 } |
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2261 Metachunk* chunks = chunks_in_use(i); |
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2262 chunk_manager()->return_chunks(i, chunks); |
7446
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2263 set_chunks_in_use(i, NULL); |
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2264 if (TraceMetadataChunkAllocation && Verbose) { |
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2265 gclog_or_tty->print_cr("updated freelist count %d %s", |
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2266 chunk_manager()->free_chunks(i)->count(), |
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2267 chunk_size_name(i)); |
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2268 } |
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2269 assert(i != HumongousIndex, "Humongous chunks are handled explicitly later"); |
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2270 } |
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2271 |
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2272 // The medium chunk case may be optimized by passing the head and |
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2273 // tail of the medium chunk list to add_at_head(). The tail is often |
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2274 // the current chunk but there are probably exceptions. |
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2275 |
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2276 // Humongous chunks |
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2277 if (TraceMetadataChunkAllocation && Verbose) { |
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2278 gclog_or_tty->print_cr("returned %d %s humongous chunks to dictionary", |
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2279 sum_count_in_chunks_in_use(HumongousIndex), |
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2280 chunk_size_name(HumongousIndex)); |
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2281 gclog_or_tty->print("Humongous chunk dictionary: "); |
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2282 } |
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2283 // Humongous chunks are never the current chunk. |
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2284 Metachunk* humongous_chunks = chunks_in_use(HumongousIndex); |
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2285 |
6885 | 2286 while (humongous_chunks != NULL) { |
2287 #ifdef ASSERT | |
12902 | 2288 humongous_chunks->set_is_tagged_free(true); |
6885 | 2289 #endif |
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2290 if (TraceMetadataChunkAllocation && Verbose) { |
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2291 gclog_or_tty->print(PTR_FORMAT " (" SIZE_FORMAT ") ", |
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2292 humongous_chunks, |
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2293 humongous_chunks->word_size()); |
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2294 } |
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2295 assert(humongous_chunks->word_size() == (size_t) |
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2296 align_size_up(humongous_chunks->word_size(), |
12979
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2297 smallest_chunk_size()), |
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2298 err_msg("Humongous chunk size is wrong: word size " SIZE_FORMAT |
8007
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2299 " granularity %d", |
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2300 humongous_chunks->word_size(), smallest_chunk_size())); |
6885 | 2301 Metachunk* next_humongous_chunks = humongous_chunks->next(); |
10175 | 2302 humongous_chunks->container()->dec_container_count(); |
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2303 chunk_manager()->humongous_dictionary()->return_chunk(humongous_chunks); |
6885 | 2304 humongous_chunks = next_humongous_chunks; |
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2305 } |
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2306 if (TraceMetadataChunkAllocation && Verbose) { |
17937
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2307 gclog_or_tty->cr(); |
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2308 gclog_or_tty->print_cr("updated dictionary count %d %s", |
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2309 chunk_manager()->humongous_dictionary()->total_count(), |
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2310 chunk_size_name(HumongousIndex)); |
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2311 } |
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2312 chunk_manager()->slow_locked_verify(); |
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2313 } |
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2314 |
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2315 const char* SpaceManager::chunk_size_name(ChunkIndex index) const { |
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2316 switch (index) { |
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2317 case SpecializedIndex: |
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2318 return "Specialized"; |
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2319 case SmallIndex: |
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2320 return "Small"; |
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2321 case MediumIndex: |
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2322 return "Medium"; |
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2323 case HumongousIndex: |
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2324 return "Humongous"; |
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|
2325 default: |
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|
2326 return NULL; |
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|
2327 } |
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|
2328 } |
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|
2329 |
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|
2330 ChunkIndex ChunkManager::list_index(size_t size) { |
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|
2331 switch (size) { |
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|
2332 case SpecializedChunk: |
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|
2333 assert(SpecializedChunk == ClassSpecializedChunk, |
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|
2334 "Need branch for ClassSpecializedChunk"); |
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|
2335 return SpecializedIndex; |
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|
2336 case SmallChunk: |
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|
2337 case ClassSmallChunk: |
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|
2338 return SmallIndex; |
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|
2339 case MediumChunk: |
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|
2340 case ClassMediumChunk: |
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|
2341 return MediumIndex; |
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|
2342 default: |
7447
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|
2343 assert(size > MediumChunk || size > ClassMediumChunk, |
7446
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2344 "Not a humongous chunk"); |
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2345 return HumongousIndex; |
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|
2346 } |
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|
2347 } |
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|
2348 |
6885 | 2349 void SpaceManager::deallocate(MetaWord* p, size_t word_size) { |
6725
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2350 assert_lock_strong(_lock); |
11966 | 2351 size_t raw_word_size = get_raw_word_size(word_size); |
17695
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|
2352 size_t min_size = TreeChunk<Metablock, FreeList<Metablock> >::min_size(); |
11966 | 2353 assert(raw_word_size >= min_size, |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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parents:
11966
diff
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|
2354 err_msg("Should not deallocate dark matter " SIZE_FORMAT "<" SIZE_FORMAT, word_size, min_size)); |
11966 | 2355 block_freelists()->return_block(p, raw_word_size); |
6725
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|
2356 } |
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|
2357 |
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|
2358 // Adds a chunk to the list of chunks in use. |
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|
2359 void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) { |
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diff
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|
2360 |
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|
2361 assert(new_chunk != NULL, "Should not be NULL"); |
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|
2362 assert(new_chunk->next() == NULL, "Should not be on a list"); |
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|
2363 |
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parents:
diff
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|
2364 new_chunk->reset_empty(); |
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|
2365 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2366 // Find the correct list and and set the current |
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parents:
diff
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|
2367 // chunk for that list. |
7446
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|
2368 ChunkIndex index = ChunkManager::list_index(new_chunk->word_size()); |
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|
2369 |
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|
2370 if (index != HumongousIndex) { |
12231
24e87613ee58
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parents:
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|
2371 retire_current_chunk(); |
6725
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|
2372 set_current_chunk(new_chunk); |
7446
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|
2373 new_chunk->set_next(chunks_in_use(index)); |
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|
2374 set_chunks_in_use(index, new_chunk); |
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|
2375 } else { |
6725
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|
2376 // For null class loader data and DumpSharedSpaces, the first chunk isn't |
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parents:
diff
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|
2377 // small, so small will be null. Link this first chunk as the current |
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parents:
diff
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|
2378 // chunk. |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2379 if (make_current) { |
da91efe96a93
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parents:
diff
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|
2380 // Set as the current chunk but otherwise treat as a humongous chunk. |
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parents:
diff
changeset
|
2381 set_current_chunk(new_chunk); |
da91efe96a93
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parents:
diff
changeset
|
2382 } |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2383 // 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
|
2384 // the null class loader metaspace (class and data virtual space managers) |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2385 // any humongous chunks so will not point to the tail |
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coleenp
parents:
diff
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|
2386 // of the humongous chunks list. |
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parents:
diff
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|
2387 new_chunk->set_next(chunks_in_use(HumongousIndex)); |
da91efe96a93
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parents:
diff
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|
2388 set_chunks_in_use(HumongousIndex, new_chunk); |
da91efe96a93
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parents:
diff
changeset
|
2389 |
7447
1de1b145f6bc
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jmasa
parents:
7446
diff
changeset
|
2390 assert(new_chunk->word_size() > medium_chunk_size(), "List inconsistency"); |
6725
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parents:
diff
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|
2391 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2392 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2393 // Add to the running sum of capacity |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2394 inc_size_metrics(new_chunk->word_size()); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2395 |
6725
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diff
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|
2396 assert(new_chunk->is_empty(), "Not ready for reuse"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2397 if (TraceMetadataChunkAllocation && Verbose) { |
da91efe96a93
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parents:
diff
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|
2398 gclog_or_tty->print("SpaceManager::add_chunk: %d) ", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2399 sum_count_in_chunks_in_use()); |
da91efe96a93
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coleenp
parents:
diff
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|
2400 new_chunk->print_on(gclog_or_tty); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2401 chunk_manager()->locked_print_free_chunks(gclog_or_tty); |
6725
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coleenp
parents:
diff
changeset
|
2402 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2403 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2404 |
12231
24e87613ee58
8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents:
12226
diff
changeset
|
2405 void SpaceManager::retire_current_chunk() { |
24e87613ee58
8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents:
12226
diff
changeset
|
2406 if (current_chunk() != NULL) { |
24e87613ee58
8009561: NPG: Metaspace fragmentation when retiring a Metachunk
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parents:
12226
diff
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|
2407 size_t remaining_words = current_chunk()->free_word_size(); |
17695
ab36007d6358
8034171: Remove use of template template parameters from binaryTreeDictionary.
goetz
parents:
17663
diff
changeset
|
2408 if (remaining_words >= TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
12231
24e87613ee58
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mgerdin
parents:
12226
diff
changeset
|
2409 block_freelists()->return_block(current_chunk()->allocate(remaining_words), remaining_words); |
24e87613ee58
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mgerdin
parents:
12226
diff
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|
2410 inc_used_metrics(remaining_words); |
24e87613ee58
8009561: NPG: Metaspace fragmentation when retiring a Metachunk
mgerdin
parents:
12226
diff
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|
2411 } |
24e87613ee58
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mgerdin
parents:
12226
diff
changeset
|
2412 } |
24e87613ee58
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mgerdin
parents:
12226
diff
changeset
|
2413 } |
24e87613ee58
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mgerdin
parents:
12226
diff
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|
2414 |
7446
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7435
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|
2415 Metachunk* SpaceManager::get_new_chunk(size_t word_size, |
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parents:
7435
diff
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|
2416 size_t grow_chunks_by_words) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2417 // Get a chunk from the chunk freelist |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2418 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
|
2419 |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2420 if (next == NULL) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2421 next = vs_list()->get_new_chunk(word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2422 grow_chunks_by_words, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2423 medium_chunk_bunch()); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2424 } |
7446
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|
2425 |
12239 | 2426 if (TraceMetadataHumongousAllocation && next != NULL && |
7446
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jmasa
parents:
7435
diff
changeset
|
2427 SpaceManager::is_humongous(next->word_size())) { |
12239 | 2428 gclog_or_tty->print_cr(" new humongous chunk word size " |
2429 PTR_FORMAT, next->word_size()); | |
7446
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jmasa
parents:
7435
diff
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|
2430 } |
e51c9860cf66
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jmasa
parents:
7435
diff
changeset
|
2431 |
e51c9860cf66
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jmasa
parents:
7435
diff
changeset
|
2432 return next; |
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2433 } |
e51c9860cf66
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|
2434 |
6725
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parents:
diff
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|
2435 MetaWord* SpaceManager::allocate(size_t word_size) { |
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parents:
diff
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|
2436 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
da91efe96a93
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coleenp
parents:
diff
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|
2437 |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
2438 size_t raw_word_size = get_raw_word_size(word_size); |
6725
da91efe96a93
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coleenp
parents:
diff
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|
2439 BlockFreelist* fl = block_freelists(); |
6885 | 2440 MetaWord* p = NULL; |
6725
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coleenp
parents:
diff
changeset
|
2441 // Allocation from the dictionary is expensive in the sense that |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2442 // the dictionary has to be searched for a size. Don't allocate |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2443 // 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
|
2444 // a reasonable policy? Maybe an skinny dictionary is fast enough |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2445 // for allocations. Do some profiling. JJJ |
6885 | 2446 if (fl->total_size() > allocation_from_dictionary_limit) { |
2447 p = fl->get_block(raw_word_size); | |
6725
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diff
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|
2448 } |
6885 | 2449 if (p == NULL) { |
2450 p = allocate_work(raw_word_size); | |
6725
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coleenp
parents:
diff
changeset
|
2451 } |
da91efe96a93
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coleenp
parents:
diff
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|
2452 |
6885 | 2453 return p; |
6725
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parents:
diff
changeset
|
2454 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2455 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2456 // Returns the address of spaced allocated for "word_size". |
da91efe96a93
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coleenp
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|
2457 // This methods does not know about blocks (Metablocks) |
6885 | 2458 MetaWord* SpaceManager::allocate_work(size_t word_size) { |
6725
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|
2459 assert_lock_strong(_lock); |
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6964458: Reimplement class meta-data storage to use native memory
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|
2460 #ifdef ASSERT |
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|
2461 if (Metadebug::test_metadata_failure()) { |
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|
2462 return NULL; |
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diff
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|
2463 } |
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diff
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|
2464 #endif |
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|
2465 // Is there space in the current chunk? |
6885 | 2466 MetaWord* result = NULL; |
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|
2467 |
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|
2468 // For DumpSharedSpaces, only allocate out of the current chunk which is |
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|
2469 // never null because we gave it the size we wanted. Caller reports out |
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diff
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|
2470 // of memory if this returns null. |
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|
2471 if (DumpSharedSpaces) { |
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|
2472 assert(current_chunk() != NULL, "should never happen"); |
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|
2473 inc_used_metrics(word_size); |
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2474 return current_chunk()->allocate(word_size); // caller handles null result |
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|
2475 } |
12838
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stefank
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diff
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|
2476 |
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|
2477 if (current_chunk() != NULL) { |
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|
2478 result = current_chunk()->allocate(word_size); |
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diff
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|
2479 } |
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|
2480 |
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|
2481 if (result == NULL) { |
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|
2482 result = grow_and_allocate(word_size); |
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coleenp
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|
2483 } |
12838
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diff
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|
2484 |
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|
2485 if (result != NULL) { |
10183
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2486 inc_used_metrics(word_size); |
6885 | 2487 assert(result != (MetaWord*) chunks_in_use(MediumIndex), |
2488 "Head of the list is being allocated"); | |
6725
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|
2489 } |
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|
2490 |
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|
2491 return result; |
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diff
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|
2492 } |
da91efe96a93
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diff
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|
2493 |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2494 void SpaceManager::verify() { |
da91efe96a93
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diff
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|
2495 // If there are blocks in the dictionary, then |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2496 // verfication of chunks does not work since |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2497 // being in the dictionary alters a chunk. |
6885 | 2498 if (block_freelists()->total_size() == 0) { |
7446
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|
2499 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
6725
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|
2500 Metachunk* curr = chunks_in_use(i); |
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|
2501 while (curr != NULL) { |
da91efe96a93
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diff
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|
2502 curr->verify(); |
7208
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jmasa
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7187
diff
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|
2503 verify_chunk_size(curr); |
6725
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diff
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|
2504 curr = curr->next(); |
da91efe96a93
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diff
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|
2505 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2506 } |
da91efe96a93
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diff
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|
2507 } |
da91efe96a93
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parents:
diff
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|
2508 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2509 |
7208
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jmasa
parents:
7187
diff
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|
2510 void SpaceManager::verify_chunk_size(Metachunk* chunk) { |
eade6b2e4782
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jmasa
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7187
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|
2511 assert(is_humongous(chunk->word_size()) || |
7446
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jmasa
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7435
diff
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|
2512 chunk->word_size() == medium_chunk_size() || |
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2513 chunk->word_size() == small_chunk_size() || |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
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|
2514 chunk->word_size() == specialized_chunk_size(), |
7208
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jmasa
parents:
7187
diff
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|
2515 "Chunk size is wrong"); |
eade6b2e4782
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jmasa
parents:
7187
diff
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|
2516 return; |
eade6b2e4782
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jmasa
parents:
7187
diff
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|
2517 } |
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7187
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|
2518 |
6725
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diff
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|
2519 #ifdef ASSERT |
10183
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jmasa
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10175
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|
2520 void SpaceManager::verify_allocated_blocks_words() { |
6725
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diff
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|
2521 // Verification is only guaranteed at a safepoint. |
10183
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10175
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|
2522 assert(SafepointSynchronize::is_at_safepoint() || !Universe::is_fully_initialized(), |
868d87ed63c8
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|
2523 "Verification can fail if the applications is running"); |
868d87ed63c8
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jmasa
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10175
diff
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|
2524 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
|
2525 err_msg("allocation total is not consistent " SIZE_FORMAT |
d9058e388631
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mikael
parents:
7447
diff
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|
2526 " vs " SIZE_FORMAT, |
10183
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10175
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|
2527 allocated_blocks_words(), sum_used_in_chunks_in_use())); |
6725
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parents:
diff
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|
2528 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2529 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2530 #endif |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2531 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2532 void SpaceManager::dump(outputStream* const out) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2533 size_t curr_total = 0; |
da91efe96a93
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parents:
diff
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|
2534 size_t waste = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2535 uint i = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2536 size_t used = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2537 size_t capacity = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2538 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2539 // Add up statistics for all chunks in this SpaceManager. |
7446
e51c9860cf66
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jmasa
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7435
diff
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|
2540 for (ChunkIndex index = ZeroIndex; |
6885 | 2541 index < NumberOfInUseLists; |
6725
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coleenp
parents:
diff
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|
2542 index = next_chunk_index(index)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2543 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2544 curr != NULL; |
da91efe96a93
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coleenp
parents:
diff
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|
2545 curr = curr->next()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2546 out->print("%d) ", i++); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2547 curr->print_on(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2548 curr_total += curr->word_size(); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2549 used += curr->used_word_size(); |
12902 | 2550 capacity += curr->word_size(); |
6725
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coleenp
parents:
diff
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|
2551 waste += curr->free_word_size() + curr->overhead();; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2552 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
2553 } |
da91efe96a93
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parents:
diff
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|
2554 |
12239 | 2555 if (TraceMetadataChunkAllocation && Verbose) { |
2556 block_freelists()->print_on(out); | |
2557 } | |
2558 | |
7446
e51c9860cf66
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diff
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|
2559 size_t free = current_chunk() == NULL ? 0 : current_chunk()->free_word_size(); |
6725
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coleenp
parents:
diff
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|
2560 // Free space isn't wasted. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2561 waste -= free; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2562 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2563 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
|
2564 " free " SIZE_FORMAT " capacity " SIZE_FORMAT |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2565 " waste " SIZE_FORMAT, curr_total, used, free, capacity, waste); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2566 } |
da91efe96a93
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coleenp
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diff
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|
2567 |
7185
90273fc0a981
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coleenp
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6969
diff
changeset
|
2568 #ifndef PRODUCT |
6725
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coleenp
parents:
diff
changeset
|
2569 void SpaceManager::mangle_freed_chunks() { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
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7435
diff
changeset
|
2570 for (ChunkIndex index = ZeroIndex; |
6885 | 2571 index < NumberOfInUseLists; |
6725
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coleenp
parents:
diff
changeset
|
2572 index = next_chunk_index(index)) { |
da91efe96a93
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coleenp
parents:
diff
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|
2573 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2574 curr != NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2575 curr = curr->next()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2576 curr->mangle(); |
da91efe96a93
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coleenp
parents:
diff
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|
2577 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2578 } |
da91efe96a93
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coleenp
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diff
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|
2579 } |
7185
90273fc0a981
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coleenp
parents:
6969
diff
changeset
|
2580 #endif // PRODUCT |
6725
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coleenp
parents:
diff
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|
2581 |
da91efe96a93
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coleenp
parents:
diff
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|
2582 // MetaspaceAux |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2583 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
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10175
diff
changeset
|
2584 |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2585 size_t MetaspaceAux::_capacity_words[] = {0, 0}; |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2586 size_t MetaspaceAux::_used_words[] = {0, 0}; |
10183
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jmasa
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10175
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|
2587 |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2588 size_t MetaspaceAux::free_bytes(Metaspace::MetadataType mdtype) { |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2589 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2590 return list == NULL ? 0 : list->free_bytes(); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2591 } |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2592 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2593 size_t MetaspaceAux::free_bytes() { |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2594 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
|
2595 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2596 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2597 void MetaspaceAux::dec_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2598 assert_lock_strong(SpaceManager::expand_lock()); |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2599 assert(words <= capacity_words(mdtype), |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2600 err_msg("About to decrement below 0: words " SIZE_FORMAT |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2601 " is greater than _capacity_words[%u] " SIZE_FORMAT, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2602 words, mdtype, capacity_words(mdtype))); |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2603 _capacity_words[mdtype] -= words; |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2604 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2605 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2606 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
|
2607 assert_lock_strong(SpaceManager::expand_lock()); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2608 // Needs to be atomic |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2609 _capacity_words[mdtype] += words; |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2610 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2611 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2612 void MetaspaceAux::dec_used(Metaspace::MetadataType mdtype, size_t words) { |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2613 assert(words <= used_words(mdtype), |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2614 err_msg("About to decrement below 0: words " SIZE_FORMAT |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2615 " is greater than _used_words[%u] " SIZE_FORMAT, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2616 words, mdtype, used_words(mdtype))); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2617 // 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
|
2618 // 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
|
2619 // 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
|
2620 // and protected by the Metaspace lock. |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2621 jlong minus_words = (jlong) - (jlong) words; |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2622 Atomic::add_ptr(minus_words, &_used_words[mdtype]); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2623 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2624 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2625 void MetaspaceAux::inc_used(Metaspace::MetadataType mdtype, size_t words) { |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2626 // _used_words tracks allocations for |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2627 // each piece of metadata. Those allocations are |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2628 // generally done concurrently by different application |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2629 // threads so must be done atomically. |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2630 Atomic::add_ptr(words, &_used_words[mdtype]); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2631 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2632 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2633 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
|
2634 size_t used = 0; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2635 ClassLoaderDataGraphMetaspaceIterator iter; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2636 while (iter.repeat()) { |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2637 Metaspace* msp = iter.get_next(); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2638 // Sum allocated_blocks_words for each metaspace |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2639 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2640 used += msp->used_words_slow(mdtype); |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2641 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2642 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2643 return used * BytesPerWord; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2644 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2645 |
12235 | 2646 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
|
2647 size_t free = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2648 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2649 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2650 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2651 if (msp != NULL) { |
12235 | 2652 free += msp->free_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2653 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2654 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2655 return free * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2656 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2657 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2658 size_t MetaspaceAux::capacity_bytes_slow(Metaspace::MetadataType mdtype) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2659 if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2660 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2661 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2662 // 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
|
2663 // added to the capacity calculation as needed. |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2664 size_t capacity = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2665 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2666 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2667 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2668 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2669 capacity += msp->capacity_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2670 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2671 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2672 return capacity * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2673 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2674 |
12235 | 2675 size_t MetaspaceAux::capacity_bytes_slow() { |
2676 #ifdef PRODUCT | |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2677 // Use capacity_bytes() in PRODUCT instead of this function. |
12235 | 2678 guarantee(false, "Should not call capacity_bytes_slow() in the PRODUCT"); |
2679 #endif | |
2680 size_t class_capacity = capacity_bytes_slow(Metaspace::ClassType); | |
2681 size_t non_class_capacity = capacity_bytes_slow(Metaspace::NonClassType); | |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2682 assert(capacity_bytes() == class_capacity + non_class_capacity, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2683 err_msg("bad accounting: capacity_bytes() " SIZE_FORMAT |
12235 | 2684 " class_capacity + non_class_capacity " SIZE_FORMAT |
2685 " class_capacity " SIZE_FORMAT " non_class_capacity " SIZE_FORMAT, | |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2686 capacity_bytes(), class_capacity + non_class_capacity, |
12235 | 2687 class_capacity, non_class_capacity)); |
2688 | |
2689 return class_capacity + non_class_capacity; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2690 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2691 |
12235 | 2692 size_t MetaspaceAux::reserved_bytes(Metaspace::MetadataType mdtype) { |
2693 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
|
2694 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
|
2695 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2696 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2697 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
|
2698 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
|
2699 return list == NULL ? 0 : list->committed_bytes(); |
12235 | 2700 } |
2701 | |
2702 size_t MetaspaceAux::min_chunk_size_words() { return Metaspace::first_chunk_word_size(); } | |
2703 | |
2704 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
|
2705 ChunkManager* chunk_manager = Metaspace::get_chunk_manager(mdtype); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2706 if (chunk_manager == NULL) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2707 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2708 } |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2709 chunk_manager->slow_verify(); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2710 return chunk_manager->free_chunks_total_words(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2711 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2712 |
12235 | 2713 size_t MetaspaceAux::free_chunks_total_bytes(Metaspace::MetadataType mdtype) { |
2714 return free_chunks_total_words(mdtype) * BytesPerWord; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2715 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2716 |
12235 | 2717 size_t MetaspaceAux::free_chunks_total_words() { |
2718 return free_chunks_total_words(Metaspace::ClassType) + | |
2719 free_chunks_total_words(Metaspace::NonClassType); | |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2720 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2721 |
12235 | 2722 size_t MetaspaceAux::free_chunks_total_bytes() { |
2723 return free_chunks_total_words() * BytesPerWord; | |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2724 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2725 |
17771
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2726 bool MetaspaceAux::has_chunk_free_list(Metaspace::MetadataType mdtype) { |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2727 return Metaspace::get_chunk_manager(mdtype) != NULL; |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2728 } |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2729 |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2730 MetaspaceChunkFreeListSummary MetaspaceAux::chunk_free_list_summary(Metaspace::MetadataType mdtype) { |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2731 if (!has_chunk_free_list(mdtype)) { |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2732 return MetaspaceChunkFreeListSummary(); |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2733 } |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2734 |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2735 const ChunkManager* cm = Metaspace::get_chunk_manager(mdtype); |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2736 return cm->chunk_free_list_summary(); |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2737 } |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2738 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2739 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
|
2740 gclog_or_tty->print(", [Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2741 if (PrintGCDetails && Verbose) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2742 gclog_or_tty->print(" " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2743 "->" SIZE_FORMAT |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2744 "(" SIZE_FORMAT ")", |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2745 prev_metadata_used, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2746 used_bytes(), |
12235 | 2747 reserved_bytes()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2748 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2749 gclog_or_tty->print(" " SIZE_FORMAT "K" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2750 "->" SIZE_FORMAT "K" |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2751 "(" SIZE_FORMAT "K)", |
12235 | 2752 prev_metadata_used/K, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2753 used_bytes()/K, |
12235 | 2754 reserved_bytes()/K); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2755 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2756 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2757 gclog_or_tty->print("]"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2758 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2759 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2760 // This is printed when PrintGCDetails |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2761 void MetaspaceAux::print_on(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2762 Metaspace::MetadataType nct = Metaspace::NonClassType; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2763 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2764 out->print_cr(" Metaspace " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2765 "used " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2766 "capacity " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2767 "committed " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2768 "reserved " SIZE_FORMAT "K", |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2769 used_bytes()/K, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2770 capacity_bytes()/K, |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2771 committed_bytes()/K, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2772 reserved_bytes()/K); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2773 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2774 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2775 Metaspace::MetadataType ct = Metaspace::ClassType; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2776 out->print_cr(" class space " |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2777 "used " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2778 "capacity " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2779 "committed " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2780 "reserved " SIZE_FORMAT "K", |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2781 used_bytes(ct)/K, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2782 capacity_bytes(ct)/K, |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2783 committed_bytes(ct)/K, |
12235 | 2784 reserved_bytes(ct)/K); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2785 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2786 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2787 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2788 // Print information for class space and data space separately. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2789 // This is almost the same as above. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2790 void MetaspaceAux::print_on(outputStream* out, Metaspace::MetadataType mdtype) { |
12235 | 2791 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
|
2792 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
|
2793 size_t used_bytes = used_bytes_slow(mdtype); |
12235 | 2794 size_t free_bytes = free_bytes_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2795 size_t used_and_free = used_bytes + free_bytes + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2796 free_chunks_capacity_bytes; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2797 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
|
2798 "K + unused in chunks " SIZE_FORMAT "K + " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2799 " capacity in free chunks " SIZE_FORMAT "K = " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2800 "K capacity in allocated chunks " SIZE_FORMAT "K", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2801 used_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2802 free_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2803 free_chunks_capacity_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2804 used_and_free / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2805 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
|
2806 // 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
|
2807 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
|
2808 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2809 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2810 // Print total fragmentation for class metaspaces |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2811 void MetaspaceAux::print_class_waste(outputStream* out) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2812 assert(Metaspace::using_class_space(), "class metaspace not used"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2813 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
|
2814 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
|
2815 ClassLoaderDataGraphMetaspaceIterator iter; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2816 while (iter.repeat()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2817 Metaspace* msp = iter.get_next(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2818 if (msp != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2819 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
|
2820 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
|
2821 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
|
2822 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
|
2823 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
|
2824 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
|
2825 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
|
2826 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2827 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2828 out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2829 SIZE_FORMAT " small(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2830 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2831 "large count " SIZE_FORMAT, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2832 cls_specialized_count, cls_specialized_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2833 cls_small_count, cls_small_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2834 cls_medium_count, cls_medium_waste, cls_humongous_count); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2835 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2836 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2837 // 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
|
2838 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
|
2839 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
|
2840 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
|
2841 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2842 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2843 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2844 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2845 if (msp != NULL) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2846 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
|
2847 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
|
2848 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
|
2849 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
|
2850 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
|
2851 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
|
2852 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
|
2853 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2854 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2855 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
|
2856 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
|
2857 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
|
2858 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
|
2859 "large count " SIZE_FORMAT, |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2860 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
|
2861 small_waste, medium_count, medium_waste, humongous_count); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2862 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2863 print_class_waste(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2864 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2865 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2866 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2867 // Dump global metaspace things from the end of ClassLoaderDataGraph |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2868 void MetaspaceAux::dump(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2869 out->print_cr("All Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2870 out->print("data space: "); print_on(out, Metaspace::NonClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2871 out->print("class space: "); print_on(out, Metaspace::ClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2872 print_waste(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2873 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2874 |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2875 void MetaspaceAux::verify_free_chunks() { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2876 Metaspace::chunk_manager_metadata()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2877 if (Metaspace::using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2878 Metaspace::chunk_manager_class()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2879 } |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2880 } |
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2881 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2882 void MetaspaceAux::verify_capacity() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2883 #ifdef ASSERT |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2884 size_t running_sum_capacity_bytes = capacity_bytes(); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2885 // 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
|
2886 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
|
2887 assert(running_sum_capacity_bytes == capacity_in_use_bytes, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2888 err_msg("capacity_words() * BytesPerWord " SIZE_FORMAT |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2889 " capacity_bytes_slow()" SIZE_FORMAT, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2890 running_sum_capacity_bytes, capacity_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2891 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2892 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2893 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2894 size_t capacity_in_use_bytes = capacity_bytes_slow(i); |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2895 assert(capacity_bytes(i) == capacity_in_use_bytes, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2896 err_msg("capacity_bytes(%u) " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2897 " capacity_bytes_slow(%u)" SIZE_FORMAT, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2898 i, capacity_bytes(i), i, capacity_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2899 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2900 #endif |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2901 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2902 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2903 void MetaspaceAux::verify_used() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2904 #ifdef ASSERT |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2905 size_t running_sum_used_bytes = used_bytes(); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2906 // 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
|
2907 size_t used_in_use_bytes = used_bytes_slow(); |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2908 assert(used_bytes() == used_in_use_bytes, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2909 err_msg("used_bytes() " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2910 " used_bytes_slow()" SIZE_FORMAT, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2911 used_bytes(), used_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2912 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2913 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2914 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2915 size_t used_in_use_bytes = used_bytes_slow(i); |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2916 assert(used_bytes(i) == used_in_use_bytes, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2917 err_msg("used_bytes(%u) " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2918 " used_bytes_slow(%u)" SIZE_FORMAT, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2919 i, used_bytes(i), i, used_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2920 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2921 #endif |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2922 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2923 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2924 void MetaspaceAux::verify_metrics() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2925 verify_capacity(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2926 verify_used(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2927 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2928 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2929 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2930 // Metaspace methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2931 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2932 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
|
2933 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
|
2934 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2935 size_t Metaspace::_commit_alignment = 0; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2936 size_t Metaspace::_reserve_alignment = 0; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2937 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2938 Metaspace::Metaspace(Mutex* lock, MetaspaceType type) { |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2939 initialize(lock, type); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2940 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2941 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2942 Metaspace::~Metaspace() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2943 delete _vsm; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2944 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2945 delete _class_vsm; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2946 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2947 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2948 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2949 VirtualSpaceList* Metaspace::_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2950 VirtualSpaceList* Metaspace::_class_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2951 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2952 ChunkManager* Metaspace::_chunk_manager_metadata = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2953 ChunkManager* Metaspace::_chunk_manager_class = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2954 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2955 #define VIRTUALSPACEMULTIPLIER 2 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2956 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2957 #ifdef _LP64 |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2958 static const uint64_t UnscaledClassSpaceMax = (uint64_t(max_juint) + 1); |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2959 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2960 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
|
2961 // 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
|
2962 // 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
|
2963 // (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
|
2964 // between the lower base and higher address. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2965 address lower_base; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2966 address higher_address; |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
2967 #if INCLUDE_CDS |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2968 if (UseSharedSpaces) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2969 higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2970 (address)(metaspace_base + compressed_class_space_size())); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2971 lower_base = MIN2(metaspace_base, cds_base); |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
2972 } else |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
2973 #endif |
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2974 { |
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2975 higher_address = metaspace_base + compressed_class_space_size(); |
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2976 lower_base = metaspace_base; |
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|
2977 |
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2978 uint64_t klass_encoding_max = UnscaledClassSpaceMax << LogKlassAlignmentInBytes; |
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2979 // If compressed class space fits in lower 32G, we don't need a base. |
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2980 if (higher_address <= (address)klass_encoding_max) { |
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2981 lower_base = 0; // effectively lower base is zero. |
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|
2982 } |
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|
2983 } |
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|
2984 |
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2985 Universe::set_narrow_klass_base(lower_base); |
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|
2986 |
13037
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|
2987 if ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax) { |
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2988 Universe::set_narrow_klass_shift(0); |
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2989 } else { |
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2990 assert(!UseSharedSpaces, "Cannot shift with UseSharedSpaces"); |
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2991 Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes); |
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2992 } |
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|
2993 } |
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2994 |
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2995 #if INCLUDE_CDS |
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2996 // Return TRUE if the specified metaspace_base and cds_base are close enough |
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2997 // to work with compressed klass pointers. |
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2998 bool Metaspace::can_use_cds_with_metaspace_addr(char* metaspace_base, address cds_base) { |
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2999 assert(cds_base != 0 && UseSharedSpaces, "Only use with CDS"); |
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3000 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
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3001 address lower_base = MIN2((address)metaspace_base, cds_base); |
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3002 address higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
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3003 (address)(metaspace_base + compressed_class_space_size())); |
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3004 return ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax); |
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3005 } |
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|
3006 #endif |
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|
3007 |
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|
3008 // Try to allocate the metaspace at the requested addr. |
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3009 void Metaspace::allocate_metaspace_compressed_klass_ptrs(char* requested_addr, address cds_base) { |
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3010 assert(using_class_space(), "called improperly"); |
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3011 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
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3012 assert(compressed_class_space_size() < KlassEncodingMetaspaceMax, |
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|
3013 "Metaspace size is too big"); |
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3014 assert_is_ptr_aligned(requested_addr, _reserve_alignment); |
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3015 assert_is_ptr_aligned(cds_base, _reserve_alignment); |
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|
3016 assert_is_size_aligned(compressed_class_space_size(), _reserve_alignment); |
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3017 |
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|
3018 // Don't use large pages for the class space. |
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|
3019 bool large_pages = false; |
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|
3020 |
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3021 ReservedSpace metaspace_rs = ReservedSpace(compressed_class_space_size(), |
12838
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|
3022 _reserve_alignment, |
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|
3023 large_pages, |
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|
3024 requested_addr, 0); |
12056
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|
3025 if (!metaspace_rs.is_reserved()) { |
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3026 #if INCLUDE_CDS |
12056
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|
3027 if (UseSharedSpaces) { |
12838
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|
3028 size_t increment = align_size_up(1*G, _reserve_alignment); |
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|
3029 |
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|
3030 // Keep trying to allocate the metaspace, increasing the requested_addr |
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|
3031 // by 1GB each time, until we reach an address that will no longer allow |
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|
3032 // use of CDS with compressed klass pointers. |
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|
3033 char *addr = requested_addr; |
12838
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|
3034 while (!metaspace_rs.is_reserved() && (addr + increment > addr) && |
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|
3035 can_use_cds_with_metaspace_addr(addr + increment, cds_base)) { |
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|
3036 addr = addr + increment; |
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|
3037 metaspace_rs = ReservedSpace(compressed_class_space_size(), |
12838
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|
3038 _reserve_alignment, large_pages, addr, 0); |
12056
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|
3039 } |
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|
3040 } |
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|
3041 #endif |
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|
3042 // If no successful allocation then try to allocate the space anywhere. If |
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|
3043 // that fails then OOM doom. At this point we cannot try allocating the |
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3044 // metaspace as if UseCompressedClassPointers is off because too much |
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3045 // initialization has happened that depends on UseCompressedClassPointers. |
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3046 // So, UseCompressedClassPointers cannot be turned off at this point. |
12056
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|
3047 if (!metaspace_rs.is_reserved()) { |
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|
3048 metaspace_rs = ReservedSpace(compressed_class_space_size(), |
12838
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|
3049 _reserve_alignment, large_pages); |
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|
3050 if (!metaspace_rs.is_reserved()) { |
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diff
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|
3051 vm_exit_during_initialization(err_msg("Could not allocate metaspace: %d bytes", |
13000
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|
3052 compressed_class_space_size())); |
12056
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|
3053 } |
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|
3054 } |
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|
3055 } |
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|
3056 |
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|
3057 // If we got here then the metaspace got allocated. |
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|
3058 MemTracker::record_virtual_memory_type((address)metaspace_rs.base(), mtClass); |
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|
3059 |
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|
3060 #if INCLUDE_CDS |
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|
3061 // Verify that we can use shared spaces. Otherwise, turn off CDS. |
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|
3062 if (UseSharedSpaces && !can_use_cds_with_metaspace_addr(metaspace_rs.base(), cds_base)) { |
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|
3063 FileMapInfo::stop_sharing_and_unmap( |
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|
3064 "Could not allocate metaspace at a compatible address"); |
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|
3065 } |
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|
3066 #endif |
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|
3067 set_narrow_klass_base_and_shift((address)metaspace_rs.base(), |
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|
3068 UseSharedSpaces ? (address)cds_base : 0); |
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|
3069 |
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|
3070 initialize_class_space(metaspace_rs); |
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|
3071 |
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|
3072 if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) { |
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|
3073 gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: " SIZE_FORMAT, |
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|
3074 Universe::narrow_klass_base(), Universe::narrow_klass_shift()); |
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|
3075 gclog_or_tty->print_cr("Compressed class space size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT, |
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|
3076 compressed_class_space_size(), metaspace_rs.base(), requested_addr); |
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|
3077 } |
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|
3078 } |
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|
3079 |
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|
3080 // For UseCompressedClassPointers the class space is reserved above the top of |
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|
3081 // the Java heap. The argument passed in is at the base of the compressed space. |
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|
3082 void Metaspace::initialize_class_space(ReservedSpace rs) { |
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|
3083 // The reserved space size may be bigger because of alignment, esp with UseLargePages |
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|
3084 assert(rs.size() >= CompressedClassSpaceSize, |
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|
3085 err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize)); |
12056
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|
3086 assert(using_class_space(), "Must be using class space"); |
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|
3087 _class_space_list = new VirtualSpaceList(rs); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
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12302
diff
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|
3088 _chunk_manager_class = new ChunkManager(SpecializedChunk, ClassSmallChunk, ClassMediumChunk); |
12838
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|
3089 |
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|
3090 if (!_class_space_list->initialization_succeeded()) { |
85c1ca43713f
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|
3091 vm_exit_during_initialization("Failed to setup compressed class space virtual space list."); |
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|
3092 } |
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|
3093 } |
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diff
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|
3094 |
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diff
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|
3095 #endif |
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|
3096 |
12838
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|
3097 void Metaspace::ergo_initialize() { |
85c1ca43713f
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|
3098 if (DumpSharedSpaces) { |
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|
3099 // Using large pages when dumping the shared archive is currently not implemented. |
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|
3100 FLAG_SET_ERGO(bool, UseLargePagesInMetaspace, false); |
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|
3101 } |
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|
3102 |
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|
3103 size_t page_size = os::vm_page_size(); |
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|
3104 if (UseLargePages && UseLargePagesInMetaspace) { |
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3105 page_size = os::large_page_size(); |
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|
3106 } |
85c1ca43713f
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|
3107 |
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|
3108 _commit_alignment = page_size; |
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|
3109 _reserve_alignment = MAX2(page_size, (size_t)os::vm_allocation_granularity()); |
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|
3110 |
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|
3111 // Do not use FLAG_SET_ERGO to update MaxMetaspaceSize, since this will |
85c1ca43713f
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3112 // override if MaxMetaspaceSize was set on the command line or not. |
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|
3113 // This information is needed later to conform to the specification of the |
85c1ca43713f
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3114 // java.lang.management.MemoryUsage API. |
85c1ca43713f
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|
3115 // |
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3116 // Ideally, we would be able to set the default value of MaxMetaspaceSize in |
85c1ca43713f
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3117 // globals.hpp to the aligned value, but this is not possible, since the |
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|
3118 // alignment depends on other flags being parsed. |
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|
3119 MaxMetaspaceSize = align_size_down_bounded(MaxMetaspaceSize, _reserve_alignment); |
12838
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3120 |
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|
3121 if (MetaspaceSize > MaxMetaspaceSize) { |
85c1ca43713f
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3122 MetaspaceSize = MaxMetaspaceSize; |
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|
3123 } |
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|
3124 |
13058
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|
3125 MetaspaceSize = align_size_down_bounded(MetaspaceSize, _commit_alignment); |
12838
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|
3126 |
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|
3127 assert(MetaspaceSize <= MaxMetaspaceSize, "MetaspaceSize should be limited by MaxMetaspaceSize"); |
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|
3128 |
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|
3129 if (MetaspaceSize < 256*K) { |
85c1ca43713f
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|
3130 vm_exit_during_initialization("Too small initial Metaspace size"); |
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|
3131 } |
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|
3132 |
13058
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|
3133 MinMetaspaceExpansion = align_size_down_bounded(MinMetaspaceExpansion, _commit_alignment); |
3aee6bc29547
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|
3134 MaxMetaspaceExpansion = align_size_down_bounded(MaxMetaspaceExpansion, _commit_alignment); |
3aee6bc29547
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jwilhelm
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|
3135 |
3aee6bc29547
8026852: Use restricted_align_down in collector policy code
jwilhelm
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|
3136 CompressedClassSpaceSize = align_size_down_bounded(CompressedClassSpaceSize, _reserve_alignment); |
13000
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8024927: Nashorn performance regression with CompressedOops
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|
3137 set_compressed_class_space_size(CompressedClassSpaceSize); |
12838
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3138 } |
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|
3139 |
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|
3140 void Metaspace::global_initialize() { |
17979
e204777ac770
8042933: assert(capacity_until_gc >= committed_bytes) failed
ehelin
parents:
17937
diff
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|
3141 MetaspaceGC::initialize(); |
e204777ac770
8042933: assert(capacity_until_gc >= committed_bytes) failed
ehelin
parents:
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diff
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|
3142 |
6725
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|
3143 // Initialize the alignment for shared spaces. |
20583
678a467a733b
8038422: CDS test failed: assert((size % os::vm_allocation_granularity()) == 0) failed when limiting SharedMiscDataSize
minqi
parents:
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diff
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|
3144 int max_alignment = os::vm_allocation_granularity(); |
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|
3145 size_t cds_total = 0; |
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|
3146 |
6725
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3147 MetaspaceShared::set_max_alignment(max_alignment); |
da91efe96a93
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coleenp
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diff
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|
3148 |
da91efe96a93
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|
3149 if (DumpSharedSpaces) { |
20375
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8046070: Class Data Sharing clean up and refactoring
iklam
parents:
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diff
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|
3150 #if INCLUDE_CDS |
20389
622c6e0ad4d6
8048150: Allow easy configurations for large CDS archives
ccheung
parents:
20375
diff
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|
3151 MetaspaceShared::estimate_regions_size(); |
622c6e0ad4d6
8048150: Allow easy configurations for large CDS archives
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|
3152 |
12838
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3153 SharedReadOnlySize = align_size_up(SharedReadOnlySize, max_alignment); |
6725
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3154 SharedReadWriteSize = align_size_up(SharedReadWriteSize, max_alignment); |
12838
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3155 SharedMiscDataSize = align_size_up(SharedMiscDataSize, max_alignment); |
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3156 SharedMiscCodeSize = align_size_up(SharedMiscCodeSize, max_alignment); |
6725
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coleenp
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diff
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|
3157 |
20586
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
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|
3158 // the min_misc_code_size estimate is based on MetaspaceShared::generate_vtable_methods() |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
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|
3159 uintx min_misc_code_size = align_size_up( |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
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|
3160 (MetaspaceShared::num_virtuals * MetaspaceShared::vtbl_list_size) * |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
changeset
|
3161 (sizeof(void*) + MetaspaceShared::vtbl_method_size) + MetaspaceShared::vtbl_common_code_size, |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
changeset
|
3162 max_alignment); |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
changeset
|
3163 |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
changeset
|
3164 if (SharedMiscCodeSize < min_misc_code_size) { |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
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|
3165 report_out_of_shared_space(SharedMiscCode); |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
changeset
|
3166 } |
03e6d34be1f5
8038268: VM Crashes in MetaspaceShared::generate_vtable_methods while creating CDS archive with limiting SharedMiscCodeSize
ccheung
parents:
20583
diff
changeset
|
3167 |
6725
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coleenp
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diff
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|
3168 // 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
|
3169 // and read write metaspace chunks will be allocated out of this and the |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3170 // remainder is the misc code and data chunks. |
12056
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hseigel
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diff
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|
3171 cds_total = FileMapInfo::shared_spaces_size(); |
12838
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3172 cds_total = align_size_up(cds_total, _reserve_alignment); |
12056
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|
3173 _space_list = new VirtualSpaceList(cds_total/wordSize); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3174 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk); |
12056
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|
3175 |
12838
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|
3176 if (!_space_list->initialization_succeeded()) { |
85c1ca43713f
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|
3177 vm_exit_during_initialization("Unable to dump shared archive.", NULL); |
85c1ca43713f
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|
3178 } |
85c1ca43713f
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|
3179 |
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hseigel
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diff
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|
3180 #ifdef _LP64 |
13000
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|
3181 if (cds_total + compressed_class_space_size() > UnscaledClassSpaceMax) { |
12838
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|
3182 vm_exit_during_initialization("Unable to dump shared archive.", |
85c1ca43713f
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|
3183 err_msg("Size of archive (" SIZE_FORMAT ") + compressed class space (" |
85c1ca43713f
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|
3184 SIZE_FORMAT ") == total (" SIZE_FORMAT ") is larger than compressed " |
13000
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8024927: Nashorn performance regression with CompressedOops
coleenp
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12998
diff
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|
3185 "klass limit: " SIZE_FORMAT, cds_total, compressed_class_space_size(), |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
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diff
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|
3186 cds_total + compressed_class_space_size(), UnscaledClassSpaceMax)); |
12838
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|
3187 } |
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diff
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|
3188 |
12056
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hseigel
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11966
diff
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|
3189 // Set the compressed klass pointer base so that decoding of these pointers works |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
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diff
changeset
|
3190 // properly when creating the shared archive. |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3191 assert(UseCompressedOops && UseCompressedClassPointers, |
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3192 "UseCompressedOops and UseCompressedClassPointers must be set"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
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|
3193 Universe::set_narrow_klass_base((address)_space_list->current_virtual_space()->bottom()); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
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|
3194 if (TraceMetavirtualspaceAllocation && Verbose) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3195 gclog_or_tty->print_cr("Setting_narrow_klass_base to Address: " PTR_FORMAT, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
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11966
diff
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|
3196 _space_list->current_virtual_space()->bottom()); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
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diff
changeset
|
3197 } |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
3198 |
740e263c80c6
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hseigel
parents:
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diff
changeset
|
3199 Universe::set_narrow_klass_shift(0); |
20375
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8046070: Class Data Sharing clean up and refactoring
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20197
diff
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|
3200 #endif // _LP64 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
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20197
diff
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|
3201 #endif // INCLUDE_CDS |
6725
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diff
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|
3202 } else { |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
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20197
diff
changeset
|
3203 #if INCLUDE_CDS |
6725
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coleenp
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diff
changeset
|
3204 // If using shared space, open the file that contains the shared space |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3205 // 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
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|
3206 // the addresses don't conflict) |
12056
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hseigel
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|
3207 address cds_address = NULL; |
6725
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coleenp
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diff
changeset
|
3208 if (UseSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3209 FileMapInfo* mapinfo = new FileMapInfo(); |
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 // 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
|
3212 // initialization fails, shared spaces [UseSharedSpaces] are |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3213 // disabled and the file is closed. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3214 // Map in spaces now also |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3215 if (mapinfo->initialize() && MetaspaceShared::map_shared_spaces(mapinfo)) { |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3216 cds_total = FileMapInfo::shared_spaces_size(); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3217 cds_address = (address)mapinfo->region_base(0); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3218 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3219 assert(!mapinfo->is_open() && !UseSharedSpaces, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3220 "archive file not closed or shared spaces not disabled."); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3221 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3222 } |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3223 #endif // INCLUDE_CDS |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3224 #ifdef _LP64 |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3225 // If UseCompressedClassPointers is set then allocate the metaspace area |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3226 // above the heap and above the CDS area (if it exists). |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3227 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3228 if (UseSharedSpaces) { |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3229 #if INCLUDE_CDS |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3230 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
|
3231 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
|
3232 allocate_metaspace_compressed_klass_ptrs(cds_end, cds_address); |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3233 #endif |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3234 } else { |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
3235 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
|
3236 allocate_metaspace_compressed_klass_ptrs(base, 0); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3237 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3238 } |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3239 #endif // _LP64 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3240 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3241 // Initialize these before initializing the VirtualSpaceList |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3242 _first_chunk_word_size = InitialBootClassLoaderMetaspaceSize / BytesPerWord; |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3243 _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
|
3244 // 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
|
3245 // 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
|
3246 // from there. This size calculated by -version. |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3247 _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
|
3248 (CompressedClassSpaceSize/BytesPerWord)*2); |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3249 _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
|
3250 // Arbitrarily set the initial virtual space to a multiple |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3251 // of the boot class loader size. |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3252 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
|
3253 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
|
3254 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3255 // Initialize the list of virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3256 _space_list = new VirtualSpaceList(word_size); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3257 _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
|
3258 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3259 if (!_space_list->initialization_succeeded()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3260 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
|
3261 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3262 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3263 |
17768
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3264 _tracer = new MetaspaceTracer(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3265 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3266 |
17979
e204777ac770
8042933: assert(capacity_until_gc >= committed_bytes) failed
ehelin
parents:
17937
diff
changeset
|
3267 void Metaspace::post_initialize() { |
e204777ac770
8042933: assert(capacity_until_gc >= committed_bytes) failed
ehelin
parents:
17937
diff
changeset
|
3268 MetaspaceGC::post_initialize(); |
e204777ac770
8042933: assert(capacity_until_gc >= committed_bytes) failed
ehelin
parents:
17937
diff
changeset
|
3269 } |
e204777ac770
8042933: assert(capacity_until_gc >= committed_bytes) failed
ehelin
parents:
17937
diff
changeset
|
3270 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3271 Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3272 size_t chunk_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3273 size_t chunk_bunch) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3274 // Get a chunk from the chunk freelist |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3275 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
|
3276 if (chunk != NULL) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3277 return chunk; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3278 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3279 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3280 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
|
3281 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3282 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3283 void Metaspace::initialize(Mutex* lock, MetaspaceType type) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3284 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3285 assert(space_list() != NULL, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3286 "Metadata VirtualSpaceList has not been initialized"); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3287 assert(chunk_manager_metadata() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3288 "Metadata ChunkManager has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3289 |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3290 _vsm = new SpaceManager(NonClassType, lock); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3291 if (_vsm == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3292 return; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3293 } |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3294 size_t word_size; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3295 size_t class_word_size; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3296 vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3297 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3298 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3299 assert(class_space_list() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3300 "Class VirtualSpaceList has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3301 assert(chunk_manager_class() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3302 "Class ChunkManager has not been initialized"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3303 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3304 // Allocate SpaceManager for classes. |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3305 _class_vsm = new SpaceManager(ClassType, lock); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3306 if (_class_vsm == NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3307 return; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3308 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3309 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3310 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3311 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
|
3312 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3313 // Allocate chunk for metadata objects |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3314 Metachunk* new_chunk = get_initialization_chunk(NonClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3315 word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3316 vsm()->medium_chunk_bunch()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3317 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
|
3318 if (new_chunk != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3319 // 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
|
3320 vsm()->add_chunk(new_chunk, true); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3321 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3322 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3323 // Allocate chunk for class metadata objects |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3324 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3325 Metachunk* class_chunk = get_initialization_chunk(ClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3326 class_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3327 class_vsm()->medium_chunk_bunch()); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3328 if (class_chunk != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3329 class_vsm()->add_chunk(class_chunk, true); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3330 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3331 } |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3332 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3333 _alloc_record_head = NULL; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3334 _alloc_record_tail = NULL; |
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 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3337 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
|
3338 size_t byte_size = word_size * wordSize; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3339 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
|
3340 } |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3341 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3342 MetaWord* Metaspace::allocate(size_t word_size, MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3343 // DumpSharedSpaces doesn't use class metadata area (yet) |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3344 // 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
|
3345 if (is_class_space_allocation(mdtype)) { |
6885 | 3346 return class_vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3347 } else { |
6885 | 3348 return vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3349 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3350 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3351 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3352 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
|
3353 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
|
3354 assert(delta_bytes > 0, "Must be"); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3355 |
20540
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3356 size_t before = 0; |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3357 size_t after = 0; |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3358 MetaWord* res; |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3359 bool incremented; |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3360 |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3361 // Each thread increments the HWM at most once. Even if the thread fails to increment |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3362 // the HWM, an allocation is still attempted. This is because another thread must then |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3363 // have incremented the HWM and therefore the allocation might still succeed. |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3364 do { |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3365 incremented = MetaspaceGC::inc_capacity_until_GC(delta_bytes, &after, &before); |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3366 res = allocate(word_size, mdtype); |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3367 } while (!incremented && res == NULL); |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3368 |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3369 if (incremented) { |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3370 tracer()->report_gc_threshold(before, after, |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3371 MetaspaceGCThresholdUpdater::ExpandAndAllocate); |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3372 if (PrintGCDetails && Verbose) { |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3373 gclog_or_tty->print_cr("Increase capacity to GC from " SIZE_FORMAT |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3374 " to " SIZE_FORMAT, before, after); |
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3375 } |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3376 } |
6885 | 3377 |
20540
b509b7ff561c
8049599: MetaspaceGC::_capacity_until_GC can overflow
ehelin
parents:
20389
diff
changeset
|
3378 return res; |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3379 } |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3380 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3381 // Space allocated in the Metaspace. This may |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3382 // be across several metadata virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3383 char* Metaspace::bottom() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3384 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
|
3385 return (char*)vsm()->current_chunk()->bottom(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3386 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3387 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3388 size_t Metaspace::used_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3389 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3390 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
|
3391 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3392 return vsm()->sum_used_in_chunks_in_use(); // includes overhead! |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3393 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3394 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3395 |
12235 | 3396 size_t Metaspace::free_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3397 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3398 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
|
3399 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3400 return vsm()->sum_free_in_chunks_in_use(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3401 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3402 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3403 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3404 // Space capacity in the Metaspace. It includes |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3405 // space in the list of chunks from which allocations |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3406 // 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
|
3407 // in the space available in the dictionary which |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3408 // is already counted in some chunk. |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3409 size_t Metaspace::capacity_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3410 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3411 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
|
3412 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3413 return vsm()->sum_capacity_in_chunks_in_use(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3414 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3415 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3416 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3417 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
|
3418 return used_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3419 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3420 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3421 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
|
3422 return capacity_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3423 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3424 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3425 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
|
3426 if (SafepointSynchronize::is_at_safepoint()) { |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3427 if (DumpSharedSpaces && PrintSharedSpaces) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3428 record_deallocation(ptr, vsm()->get_raw_word_size(word_size)); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3429 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3430 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3431 assert(Thread::current()->is_VM_thread(), "should be the VM thread"); |
6885 | 3432 // 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
|
3433 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
17695
ab36007d6358
8034171: Remove use of template template parameters from binaryTreeDictionary.
goetz
parents:
17663
diff
changeset
|
3434 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 3435 // Dark matter. Too small for dictionary. |
3436 #ifdef ASSERT | |
3437 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3438 #endif | |
3439 return; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3440 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3441 if (is_class && using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3442 class_vsm()->deallocate(ptr, word_size); |
6885 | 3443 } else { |
3444 vsm()->deallocate(ptr, word_size); | |
3445 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3446 } 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
|
3447 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
|
3448 |
17695
ab36007d6358
8034171: Remove use of template template parameters from binaryTreeDictionary.
goetz
parents:
17663
diff
changeset
|
3449 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 3450 // Dark matter. Too small for dictionary. |
3451 #ifdef ASSERT | |
3452 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3453 #endif | |
3454 return; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3455 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3456 if (is_class && using_class_space()) { |
6885 | 3457 class_vsm()->deallocate(ptr, word_size); |
3458 } else { | |
3459 vsm()->deallocate(ptr, word_size); | |
3460 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3461 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3462 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3463 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3464 |
12902 | 3465 MetaWord* Metaspace::allocate(ClassLoaderData* loader_data, size_t word_size, |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3466 bool read_only, MetaspaceObj::Type type, TRAPS) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3467 if (HAS_PENDING_EXCEPTION) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3468 assert(false, "Should not allocate with exception pending"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3469 return NULL; // caller does a CHECK_NULL too |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3470 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3471 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3472 assert(loader_data != NULL, "Should never pass around a NULL loader_data. " |
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3473 "ClassLoaderData::the_null_class_loader_data() should have been used."); |
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3474 |
6725
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|
3475 // Allocate in metaspaces without taking out a lock, because it deadlocks |
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|
3476 // with the SymbolTable_lock. Dumping is single threaded for now. We'll have |
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parents:
diff
changeset
|
3477 // to revisit this for application class data sharing. |
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|
3478 if (DumpSharedSpaces) { |
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|
3479 assert(type > MetaspaceObj::UnknownType && type < MetaspaceObj::_number_of_types, "sanity"); |
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|
3480 Metaspace* space = read_only ? loader_data->ro_metaspace() : loader_data->rw_metaspace(); |
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3481 MetaWord* result = space->allocate(word_size, NonClassType); |
6725
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|
3482 if (result == NULL) { |
da91efe96a93
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diff
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|
3483 report_out_of_shared_space(read_only ? SharedReadOnly : SharedReadWrite); |
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|
3484 } |
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|
3485 if (PrintSharedSpaces) { |
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diff
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|
3486 space->record_allocation(result, type, space->vsm()->get_raw_word_size(word_size)); |
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|
3487 } |
12902 | 3488 |
3489 // Zero initialize. | |
3490 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0); | |
3491 | |
3492 return result; | |
6725
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|
3493 } |
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changeset
|
3494 |
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|
3495 MetadataType mdtype = (type == MetaspaceObj::ClassType) ? ClassType : NonClassType; |
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|
3496 |
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|
3497 // Try to allocate metadata. |
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|
3498 MetaWord* result = loader_data->metaspace_non_null()->allocate(word_size, mdtype); |
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|
3499 |
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|
3500 if (result == NULL) { |
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|
3501 tracer()->report_metaspace_allocation_failure(loader_data, word_size, type, mdtype); |
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|
3502 |
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|
3503 // Allocation failed. |
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|
3504 if (is_init_completed()) { |
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|
3505 // Only start a GC if the bootstrapping has completed. |
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3506 |
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|
3507 // Try to clean out some memory and retry. |
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|
3508 result = Universe::heap()->collector_policy()->satisfy_failed_metadata_allocation( |
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|
3509 loader_data, word_size, mdtype); |
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|
3510 } |
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|
3511 } |
6725
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parents:
diff
changeset
|
3512 |
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changeset
|
3513 if (result == NULL) { |
17770
5af31f70a866
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diff
changeset
|
3514 report_metadata_oome(loader_data, word_size, type, mdtype, CHECK_NULL); |
12838
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|
3515 } |
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|
3516 |
12902 | 3517 // Zero initialize. |
3518 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0); | |
3519 | |
3520 return result; | |
12838
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diff
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|
3521 } |
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diff
changeset
|
3522 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
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diff
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|
3523 size_t Metaspace::class_chunk_size(size_t word_size) { |
a6177f601c64
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changeset
|
3524 assert(using_class_space(), "Has to use class space"); |
a6177f601c64
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diff
changeset
|
3525 return class_vsm()->calc_chunk_size(word_size); |
a6177f601c64
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diff
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|
3526 } |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
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diff
changeset
|
3527 |
17770
5af31f70a866
8036701: Add trace event when a metaspace throws out of memory error
ehelin
parents:
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diff
changeset
|
3528 void Metaspace::report_metadata_oome(ClassLoaderData* loader_data, size_t word_size, MetaspaceObj::Type type, MetadataType mdtype, TRAPS) { |
5af31f70a866
8036701: Add trace event when a metaspace throws out of memory error
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diff
changeset
|
3529 tracer()->report_metadata_oom(loader_data, word_size, type, mdtype); |
5af31f70a866
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parents:
17769
diff
changeset
|
3530 |
12838
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changeset
|
3531 // If result is still null, we are out of memory. |
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diff
changeset
|
3532 if (Verbose && TraceMetadataChunkAllocation) { |
85c1ca43713f
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changeset
|
3533 gclog_or_tty->print_cr("Metaspace allocation failed for size " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
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changeset
|
3534 SIZE_FORMAT, word_size); |
85c1ca43713f
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|
3535 if (loader_data->metaspace_or_null() != NULL) { |
85c1ca43713f
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changeset
|
3536 loader_data->dump(gclog_or_tty); |
6725
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diff
changeset
|
3537 } |
12838
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diff
changeset
|
3538 MetaspaceAux::dump(gclog_or_tty); |
6725
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diff
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|
3539 } |
12838
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|
3540 |
12998
a6177f601c64
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hseigel
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12906
diff
changeset
|
3541 bool out_of_compressed_class_space = false; |
a6177f601c64
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hseigel
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diff
changeset
|
3542 if (is_class_space_allocation(mdtype)) { |
a6177f601c64
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hseigel
parents:
12906
diff
changeset
|
3543 Metaspace* metaspace = loader_data->metaspace_non_null(); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
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12906
diff
changeset
|
3544 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
|
3545 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
|
3546 (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
|
3547 CompressedClassSpaceSize; |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3548 } |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3549 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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diff
changeset
|
3550 // -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
|
3551 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
|
3552 "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
|
3553 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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diff
changeset
|
3554 report_java_out_of_memory(space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3555 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3556 if (JvmtiExport::should_post_resource_exhausted()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3557 JvmtiExport::post_resource_exhausted( |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3558 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3559 space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3560 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3561 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3562 if (!is_init_completed()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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diff
changeset
|
3563 vm_exit_during_initialization("OutOfMemoryError", space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3564 } |
85c1ca43713f
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stefank
parents:
12340
diff
changeset
|
3565 |
12998
a6177f601c64
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hseigel
parents:
12906
diff
changeset
|
3566 if (out_of_compressed_class_space) { |
12838
85c1ca43713f
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stefank
parents:
12340
diff
changeset
|
3567 THROW_OOP(Universe::out_of_memory_error_class_metaspace()); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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diff
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|
3568 } else { |
85c1ca43713f
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stefank
parents:
12340
diff
changeset
|
3569 THROW_OOP(Universe::out_of_memory_error_metaspace()); |
85c1ca43713f
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stefank
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|
3570 } |
6725
da91efe96a93
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coleenp
parents:
diff
changeset
|
3571 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3572 |
17769
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3573 const char* Metaspace::metadata_type_name(Metaspace::MetadataType mdtype) { |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3574 switch (mdtype) { |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3575 case Metaspace::ClassType: return "Class"; |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3576 case Metaspace::NonClassType: return "Metadata"; |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3577 default: |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3578 assert(false, err_msg("Got bad mdtype: %d", (int) mdtype)); |
bc7714614ad8
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ehelin
parents:
17768
diff
changeset
|
3579 return NULL; |
bc7714614ad8
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ehelin
parents:
17768
diff
changeset
|
3580 } |
bc7714614ad8
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parents:
17768
diff
changeset
|
3581 } |
bc7714614ad8
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parents:
17768
diff
changeset
|
3582 |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
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10330
diff
changeset
|
3583 void Metaspace::record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
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10330
diff
changeset
|
3584 assert(DumpSharedSpaces, "sanity"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3585 |
20375
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20197
diff
changeset
|
3586 int byte_size = (int)word_size * HeapWordSize; |
6e0cb14ce59b
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iklam
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20197
diff
changeset
|
3587 AllocRecord *rec = new AllocRecord((address)ptr, type, byte_size); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
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diff
changeset
|
3588 |
10376
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iklam
parents:
10330
diff
changeset
|
3589 if (_alloc_record_head == NULL) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3590 _alloc_record_head = _alloc_record_tail = rec; |
20375
6e0cb14ce59b
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iklam
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20197
diff
changeset
|
3591 } else if (_alloc_record_tail->_ptr + _alloc_record_tail->_byte_size == (address)ptr) { |
10376
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iklam
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10330
diff
changeset
|
3592 _alloc_record_tail->_next = rec; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3593 _alloc_record_tail = rec; |
20375
6e0cb14ce59b
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iklam
parents:
20197
diff
changeset
|
3594 } else { |
6e0cb14ce59b
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iklam
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diff
changeset
|
3595 // slow linear search, but this doesn't happen that often, and only when dumping |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3596 for (AllocRecord *old = _alloc_record_head; old; old = old->_next) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3597 if (old->_ptr == ptr) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3598 assert(old->_type == MetaspaceObj::DeallocatedType, "sanity"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3599 int remain_bytes = old->_byte_size - byte_size; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3600 assert(remain_bytes >= 0, "sanity"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3601 old->_type = type; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3602 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3603 if (remain_bytes == 0) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3604 delete(rec); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3605 } else { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3606 address remain_ptr = address(ptr) + byte_size; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3607 rec->_ptr = remain_ptr; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3608 rec->_byte_size = remain_bytes; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3609 rec->_type = MetaspaceObj::DeallocatedType; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3610 rec->_next = old->_next; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3611 old->_byte_size = byte_size; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3612 old->_next = rec; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3613 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3614 return; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3615 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3616 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3617 assert(0, "reallocating a freed pointer that was not recorded"); |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3618 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3619 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3620 |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3621 void Metaspace::record_deallocation(void* ptr, size_t word_size) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3622 assert(DumpSharedSpaces, "sanity"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3623 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3624 for (AllocRecord *rec = _alloc_record_head; rec; rec = rec->_next) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3625 if (rec->_ptr == ptr) { |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3626 assert(rec->_byte_size == (int)word_size * HeapWordSize, "sanity"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3627 rec->_type = MetaspaceObj::DeallocatedType; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3628 return; |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3629 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3630 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3631 |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3632 assert(0, "deallocating a pointer that was not recorded"); |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3633 } |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20197
diff
changeset
|
3634 |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3635 void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3636 assert(DumpSharedSpaces, "unimplemented for !DumpSharedSpaces"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3637 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3638 address last_addr = (address)bottom(); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3639 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3640 for (AllocRecord *rec = _alloc_record_head; rec; rec = rec->_next) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3641 address ptr = rec->_ptr; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3642 if (last_addr < ptr) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3643 closure->doit(last_addr, MetaspaceObj::UnknownType, ptr - last_addr); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3644 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3645 closure->doit(ptr, rec->_type, rec->_byte_size); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3646 last_addr = ptr + rec->_byte_size; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3647 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3648 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3649 address top = ((address)bottom()) + used_bytes_slow(Metaspace::NonClassType); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3650 if (last_addr < top) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3651 closure->doit(last_addr, MetaspaceObj::UnknownType, top - last_addr); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3652 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3653 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3654 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3655 void Metaspace::purge(MetadataType mdtype) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3656 get_space_list(mdtype)->purge(get_chunk_manager(mdtype)); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3657 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3658 |
10175 | 3659 void Metaspace::purge() { |
3660 MutexLockerEx cl(SpaceManager::expand_lock(), | |
3661 Mutex::_no_safepoint_check_flag); | |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3662 purge(NonClassType); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3663 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3664 purge(ClassType); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3665 } |
10175 | 3666 } |
3667 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3668 void Metaspace::print_on(outputStream* out) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3669 // Print both class virtual space counts and metaspace. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3670 if (Verbose) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3671 vsm()->print_on(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3672 if (using_class_space()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3673 class_vsm()->print_on(out); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3674 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3675 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3676 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3677 |
17663
40353abd7984
8029178: Parallel class loading test anonymous-simple gets SIGSEGV in Metaspace::contains
coleenp
parents:
13439
diff
changeset
|
3678 bool Metaspace::contains(const void* ptr) { |
17935
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3679 if (UseSharedSpaces && MetaspaceShared::is_in_shared_space(ptr)) { |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3680 return true; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3681 } |
17935
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3682 |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3683 if (using_class_space() && get_space_list(ClassType)->contains(ptr)) { |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3684 return true; |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3685 } |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3686 |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3687 return get_space_list(NonClassType)->contains(ptr); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3688 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3689 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3690 void Metaspace::verify() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3691 vsm()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3692 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3693 class_vsm()->verify(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3694 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3695 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3696 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3697 void Metaspace::dump(outputStream* const out) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3698 out->print_cr("\nVirtual space manager: " INTPTR_FORMAT, vsm()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3699 vsm()->dump(out); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3700 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3701 out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm()); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3702 class_vsm()->dump(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3703 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3704 } |
12236
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3705 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3706 /////////////// Unit tests /////////////// |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3707 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3708 #ifndef PRODUCT |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3709 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3710 class TestMetaspaceAuxTest : AllStatic { |
12236
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3711 public: |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3712 static void test_reserved() { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3713 size_t reserved = MetaspaceAux::reserved_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3714 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3715 assert(reserved > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3716 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3717 size_t committed = MetaspaceAux::committed_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3718 assert(committed <= reserved, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3719 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3720 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
|
3721 assert(reserved_metadata > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3722 assert(reserved_metadata <= reserved, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3723 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3724 if (UseCompressedClassPointers) { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3725 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
|
3726 assert(reserved_class > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3727 assert(reserved_class < reserved, "assert"); |
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diff
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|
3728 } |
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diff
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|
3729 } |
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diff
changeset
|
3730 |
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diff
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|
3731 static void test_committed() { |
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diff
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|
3732 size_t committed = MetaspaceAux::committed_bytes(); |
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diff
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|
3733 |
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8024638: Count and expose the amount of committed memory in the metaspaces
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diff
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|
3734 assert(committed > 0, "assert"); |
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8024638: Count and expose the amount of committed memory in the metaspaces
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diff
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|
3735 |
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diff
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|
3736 size_t reserved = MetaspaceAux::reserved_bytes(); |
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diff
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|
3737 assert(committed <= reserved, "assert"); |
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8024638: Count and expose the amount of committed memory in the metaspaces
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diff
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|
3738 |
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|
3739 size_t committed_metadata = MetaspaceAux::committed_bytes(Metaspace::NonClassType); |
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|
3740 assert(committed_metadata > 0, "assert"); |
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|
3741 assert(committed_metadata <= committed, "assert"); |
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|
3742 |
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|
3743 if (UseCompressedClassPointers) { |
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|
3744 size_t committed_class = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
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|
3745 assert(committed_class > 0, "assert"); |
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|
3746 assert(committed_class < committed, "assert"); |
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|
3747 } |
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diff
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|
3748 } |
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|
3749 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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12303
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|
3750 static void test_virtual_space_list_large_chunk() { |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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|
3751 VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity()); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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parents:
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|
3752 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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diff
changeset
|
3753 // 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:
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diff
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|
3754 // vm_allocation_granularity aligned on Windows. |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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diff
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|
3755 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
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parents:
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diff
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|
3756 large_size += (os::vm_page_size()/BytesPerWord); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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diff
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|
3757 vs_list->get_new_chunk(large_size, large_size, 0); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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parents:
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diff
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|
3758 } |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3759 |
12236
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|
3760 static void test() { |
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diff
changeset
|
3761 test_reserved(); |
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diff
changeset
|
3762 test_committed(); |
12306
03f493ce3a71
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brutisso
parents:
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diff
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|
3763 test_virtual_space_list_large_chunk(); |
12236
c4c768305a8f
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|
3764 } |
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|
3765 }; |
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|
3766 |
12306
03f493ce3a71
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parents:
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diff
changeset
|
3767 void TestMetaspaceAux_test() { |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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parents:
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diff
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|
3768 TestMetaspaceAuxTest::test(); |
12236
c4c768305a8f
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|
3769 } |
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|
3770 |
12979
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3771 class TestVirtualSpaceNodeTest { |
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|
3772 static void chunk_up(size_t words_left, size_t& num_medium_chunks, |
1d1ea10fe09f
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|
3773 size_t& num_small_chunks, |
1d1ea10fe09f
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|
3774 size_t& num_specialized_chunks) { |
1d1ea10fe09f
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|
3775 num_medium_chunks = words_left / MediumChunk; |
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|
3776 words_left = words_left % MediumChunk; |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3777 |
1d1ea10fe09f
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|
3778 num_small_chunks = words_left / SmallChunk; |
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|
3779 words_left = words_left % SmallChunk; |
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|
3780 // how many specialized chunks can we get? |
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|
3781 num_specialized_chunks = words_left / SpecializedChunk; |
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|
3782 assert(words_left % SpecializedChunk == 0, "should be nothing left"); |
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|
3783 } |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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changeset
|
3784 |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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diff
changeset
|
3785 public: |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3786 static void test() { |
1d1ea10fe09f
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|
3787 MutexLockerEx ml(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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|
3788 const size_t vsn_test_size_words = MediumChunk * 4; |
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|
3789 const size_t vsn_test_size_bytes = vsn_test_size_words * BytesPerWord; |
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8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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parents:
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|
3790 |
1d1ea10fe09f
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mgerdin
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diff
changeset
|
3791 // The chunk sizes must be multiples of eachother, or this will fail |
1d1ea10fe09f
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mgerdin
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|
3792 STATIC_ASSERT(MediumChunk % SmallChunk == 0); |
1d1ea10fe09f
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|
3793 STATIC_ASSERT(SmallChunk % SpecializedChunk == 0); |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3794 |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
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diff
changeset
|
3795 { // No committed memory in VSN |
1d1ea10fe09f
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mgerdin
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diff
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|
3796 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
1d1ea10fe09f
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mgerdin
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diff
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|
3797 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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|
3798 vsn.initialize(); |
1d1ea10fe09f
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|
3799 vsn.retire(&cm); |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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diff
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|
3800 assert(cm.sum_free_chunks_count() == 0, "did not commit any memory in the VSN"); |
1d1ea10fe09f
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|
3801 } |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
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diff
changeset
|
3802 |
1d1ea10fe09f
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mgerdin
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diff
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|
3803 { // All of VSN is committed, half is used by chunks |
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diff
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|
3804 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
1d1ea10fe09f
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diff
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|
3805 VirtualSpaceNode vsn(vsn_test_size_bytes); |
1d1ea10fe09f
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diff
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|
3806 vsn.initialize(); |
1d1ea10fe09f
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|
3807 vsn.expand_by(vsn_test_size_words, vsn_test_size_words); |
1d1ea10fe09f
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|
3808 vsn.get_chunk_vs(MediumChunk); |
1d1ea10fe09f
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|
3809 vsn.get_chunk_vs(MediumChunk); |
1d1ea10fe09f
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|
3810 vsn.retire(&cm); |
1d1ea10fe09f
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|
3811 assert(cm.sum_free_chunks_count() == 2, "should have been memory left for 2 medium chunks"); |
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|
3812 assert(cm.sum_free_chunks() == 2*MediumChunk, "sizes should add up"); |
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8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3813 } |
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8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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diff
changeset
|
3814 |
1d1ea10fe09f
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diff
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|
3815 { // 4 pages of VSN is committed, some is used by chunks |
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|
3816 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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|
3817 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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|
3818 const size_t page_chunks = 4 * (size_t)os::vm_page_size() / BytesPerWord; |
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|
3819 assert(page_chunks < MediumChunk, "Test expects medium chunks to be at least 4*page_size"); |
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|
3820 vsn.initialize(); |
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diff
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|
3821 vsn.expand_by(page_chunks, page_chunks); |
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|
3822 vsn.get_chunk_vs(SmallChunk); |
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|
3823 vsn.get_chunk_vs(SpecializedChunk); |
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|
3824 vsn.retire(&cm); |
1d1ea10fe09f
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|
3825 |
1d1ea10fe09f
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changeset
|
3826 // committed - used = words left to retire |
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|
3827 const size_t words_left = page_chunks - SmallChunk - SpecializedChunk; |
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|
3828 |
1d1ea10fe09f
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diff
changeset
|
3829 size_t num_medium_chunks, num_small_chunks, num_spec_chunks; |
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|
3830 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks); |
1d1ea10fe09f
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|
3831 |
1d1ea10fe09f
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changeset
|
3832 assert(num_medium_chunks == 0, "should not get any medium chunks"); |
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|
3833 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks"); |
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|
3834 assert(cm.sum_free_chunks() == words_left, "sizes should add up"); |
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|
3835 } |
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diff
changeset
|
3836 |
1d1ea10fe09f
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diff
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|
3837 { // Half of VSN is committed, a humongous chunk is used |
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|
3838 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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3839 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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3840 vsn.initialize(); |
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3841 vsn.expand_by(MediumChunk * 2, MediumChunk * 2); |
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3842 vsn.get_chunk_vs(MediumChunk + SpecializedChunk); // Humongous chunks will be aligned up to MediumChunk + SpecializedChunk |
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3843 vsn.retire(&cm); |
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3844 |
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3845 const size_t words_left = MediumChunk * 2 - (MediumChunk + SpecializedChunk); |
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3846 size_t num_medium_chunks, num_small_chunks, num_spec_chunks; |
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3847 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks); |
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3848 |
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3849 assert(num_medium_chunks == 0, "should not get any medium chunks"); |
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3850 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks"); |
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3851 assert(cm.sum_free_chunks() == words_left, "sizes should add up"); |
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3852 } |
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3853 |
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3854 } |
13439
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3855 |
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3856 #define assert_is_available_positive(word_size) \ |
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3857 assert(vsn.is_available(word_size), \ |
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3858 err_msg(#word_size ": " PTR_FORMAT " bytes were not available in " \ |
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3859 "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \ |
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3860 (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end())); |
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3861 |
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3862 #define assert_is_available_negative(word_size) \ |
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3863 assert(!vsn.is_available(word_size), \ |
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3864 err_msg(#word_size ": " PTR_FORMAT " bytes should not be available in " \ |
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3865 "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \ |
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3866 (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end())); |
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3867 |
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3868 static void test_is_available_positive() { |
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3869 // Reserve some memory. |
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3870 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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3871 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3872 |
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3873 // Commit some memory. |
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3874 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3875 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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3876 assert(expanded, "Failed to commit"); |
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3877 |
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3878 // Check that is_available accepts the committed size. |
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3879 assert_is_available_positive(commit_word_size); |
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3880 |
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3881 // Check that is_available accepts half the committed size. |
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3882 size_t expand_word_size = commit_word_size / 2; |
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3883 assert_is_available_positive(expand_word_size); |
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3884 } |
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3885 |
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3886 static void test_is_available_negative() { |
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3887 // Reserve some memory. |
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3888 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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3889 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3890 |
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3891 // Commit some memory. |
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3892 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3893 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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|
3894 assert(expanded, "Failed to commit"); |
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3895 |
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3896 // Check that is_available doesn't accept a too large size. |
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3897 size_t two_times_commit_word_size = commit_word_size * 2; |
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3898 assert_is_available_negative(two_times_commit_word_size); |
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3899 } |
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3900 |
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3901 static void test_is_available_overflow() { |
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3902 // Reserve some memory. |
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3903 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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3904 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3905 |
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3906 // Commit some memory. |
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3907 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3908 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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3909 assert(expanded, "Failed to commit"); |
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3910 |
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3911 // Calculate a size that will overflow the virtual space size. |
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3912 void* virtual_space_max = (void*)(uintptr_t)-1; |
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3913 size_t bottom_to_max = pointer_delta(virtual_space_max, vsn.bottom(), 1); |
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3914 size_t overflow_size = bottom_to_max + BytesPerWord; |
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3915 size_t overflow_word_size = overflow_size / BytesPerWord; |
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3916 |
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3917 // Check that is_available can handle the overflow. |
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3918 assert_is_available_negative(overflow_word_size); |
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3919 } |
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3920 |
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3921 static void test_is_available() { |
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3922 TestVirtualSpaceNodeTest::test_is_available_positive(); |
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3923 TestVirtualSpaceNodeTest::test_is_available_negative(); |
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3924 TestVirtualSpaceNodeTest::test_is_available_overflow(); |
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3925 } |
12979
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3926 }; |
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3927 |
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3928 void TestVirtualSpaceNode_test() { |
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3929 TestVirtualSpaceNodeTest::test(); |
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3930 TestVirtualSpaceNodeTest::test_is_available(); |
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3931 } |
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3932 #endif |