Mercurial > hg > truffle
annotate src/share/vm/memory/metaspace.cpp @ 18070:a2221bbf6812
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author | asaha |
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date | Tue, 17 Jun 2014 16:12:09 -0700 |
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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.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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107 | |
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 // This allocates memory with mmap. For DumpSharedspaces, try to reserve |
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417 // configurable address, generally at the top of the Java heap so other |
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418 // memory addresses don't conflict. |
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419 if (DumpSharedSpaces) { |
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420 bool large_pages = false; // No large pages when dumping the CDS archive. |
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421 char* shared_base = (char*)align_ptr_up((char*)SharedBaseAddress, Metaspace::reserve_alignment()); |
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422 |
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423 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages, shared_base, 0); |
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424 if (_rs.is_reserved()) { |
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425 assert(shared_base == 0 || _rs.base() == shared_base, "should match"); |
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426 } else { |
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427 // Get a mmap region anywhere if the SharedBaseAddress fails. |
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428 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages); |
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429 } |
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430 MetaspaceShared::set_shared_rs(&_rs); |
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431 } else { |
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432 bool large_pages = should_commit_large_pages_when_reserving(bytes); |
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433 |
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434 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages); |
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435 } |
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436 |
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437 if (_rs.is_reserved()) { |
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438 assert(_rs.base() != NULL, "Catch if we get a NULL address"); |
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439 assert(_rs.size() != 0, "Catch if we get a 0 size"); |
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440 assert_is_ptr_aligned(_rs.base(), Metaspace::reserve_alignment()); |
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441 assert_is_size_aligned(_rs.size(), Metaspace::reserve_alignment()); |
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442 |
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443 MemTracker::record_virtual_memory_type((address)_rs.base(), mtClass); |
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444 } |
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445 } |
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446 |
10175 | 447 void VirtualSpaceNode::purge(ChunkManager* chunk_manager) { |
448 Metachunk* chunk = first_chunk(); | |
449 Metachunk* invalid_chunk = (Metachunk*) top(); | |
450 while (chunk < invalid_chunk ) { | |
12902 | 451 assert(chunk->is_tagged_free(), "Should be tagged free"); |
452 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
453 chunk_manager->remove_chunk(chunk); | |
454 assert(chunk->next() == NULL && | |
455 chunk->prev() == NULL, | |
456 "Was not removed from its list"); | |
457 chunk = (Metachunk*) next; | |
10175 | 458 } |
459 } | |
460 | |
461 #ifdef ASSERT | |
462 uint VirtualSpaceNode::container_count_slow() { | |
463 uint count = 0; | |
464 Metachunk* chunk = first_chunk(); | |
465 Metachunk* invalid_chunk = (Metachunk*) top(); | |
466 while (chunk < invalid_chunk ) { | |
467 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
468 // Don't count the chunks on the free lists. Those are | |
469 // still part of the VirtualSpaceNode but not currently | |
470 // counted. | |
12902 | 471 if (!chunk->is_tagged_free()) { |
10175 | 472 count++; |
473 } | |
474 chunk = (Metachunk*) next; | |
475 } | |
476 return count; | |
477 } | |
478 #endif | |
479 | |
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480 // List of VirtualSpaces for metadata allocation. |
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481 class VirtualSpaceList : public CHeapObj<mtClass> { |
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482 friend class VirtualSpaceNode; |
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483 |
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484 enum VirtualSpaceSizes { |
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485 VirtualSpaceSize = 256 * K |
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486 }; |
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487 |
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488 // Head of the list |
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489 VirtualSpaceNode* _virtual_space_list; |
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490 // virtual space currently being used for allocations |
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491 VirtualSpaceNode* _current_virtual_space; |
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492 |
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493 // Is this VirtualSpaceList used for the compressed class space |
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494 bool _is_class; |
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495 |
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496 // Sum of reserved and committed memory in the virtual spaces |
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497 size_t _reserved_words; |
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498 size_t _committed_words; |
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499 |
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500 // Number of virtual spaces |
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501 size_t _virtual_space_count; |
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502 |
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503 ~VirtualSpaceList(); |
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504 |
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505 VirtualSpaceNode* virtual_space_list() const { return _virtual_space_list; } |
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506 |
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507 void set_virtual_space_list(VirtualSpaceNode* v) { |
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508 _virtual_space_list = v; |
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509 } |
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510 void set_current_virtual_space(VirtualSpaceNode* v) { |
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511 _current_virtual_space = v; |
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512 } |
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513 |
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514 void link_vs(VirtualSpaceNode* new_entry); |
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515 |
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516 // Get another virtual space and add it to the list. This |
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517 // is typically prompted by a failed attempt to allocate a chunk |
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518 // and is typically followed by the allocation of a chunk. |
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519 bool create_new_virtual_space(size_t vs_word_size); |
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520 |
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521 // Chunk up the unused committed space in the current |
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522 // virtual space and add the chunks to the free list. |
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523 void retire_current_virtual_space(); |
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524 |
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525 public: |
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526 VirtualSpaceList(size_t word_size); |
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527 VirtualSpaceList(ReservedSpace rs); |
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528 |
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529 size_t free_bytes(); |
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530 |
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531 Metachunk* get_new_chunk(size_t word_size, |
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532 size_t grow_chunks_by_words, |
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533 size_t medium_chunk_bunch); |
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534 |
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535 bool expand_node_by(VirtualSpaceNode* node, |
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536 size_t min_words, |
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537 size_t preferred_words); |
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538 |
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539 bool expand_by(size_t min_words, |
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540 size_t preferred_words); |
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541 |
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542 VirtualSpaceNode* current_virtual_space() { |
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543 return _current_virtual_space; |
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544 } |
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545 |
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546 bool is_class() const { return _is_class; } |
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547 |
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548 bool initialization_succeeded() { return _virtual_space_list != NULL; } |
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549 |
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550 size_t reserved_words() { return _reserved_words; } |
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551 size_t reserved_bytes() { return reserved_words() * BytesPerWord; } |
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552 size_t committed_words() { return _committed_words; } |
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553 size_t committed_bytes() { return committed_words() * BytesPerWord; } |
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554 |
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555 void inc_reserved_words(size_t v); |
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556 void dec_reserved_words(size_t v); |
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557 void inc_committed_words(size_t v); |
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558 void dec_committed_words(size_t v); |
10175 | 559 void inc_virtual_space_count(); |
560 void dec_virtual_space_count(); | |
561 | |
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562 bool contains(const void* ptr); |
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563 |
10175 | 564 // Unlink empty VirtualSpaceNodes and free it. |
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565 void purge(ChunkManager* chunk_manager); |
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566 |
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567 void print_on(outputStream* st) const; |
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568 |
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569 class VirtualSpaceListIterator : public StackObj { |
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570 VirtualSpaceNode* _virtual_spaces; |
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571 public: |
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572 VirtualSpaceListIterator(VirtualSpaceNode* virtual_spaces) : |
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573 _virtual_spaces(virtual_spaces) {} |
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574 |
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575 bool repeat() { |
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576 return _virtual_spaces != NULL; |
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577 } |
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578 |
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579 VirtualSpaceNode* get_next() { |
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580 VirtualSpaceNode* result = _virtual_spaces; |
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581 if (_virtual_spaces != NULL) { |
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582 _virtual_spaces = _virtual_spaces->next(); |
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583 } |
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584 return result; |
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585 } |
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586 }; |
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587 }; |
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588 |
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589 class Metadebug : AllStatic { |
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590 // Debugging support for Metaspaces |
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591 static int _allocation_fail_alot_count; |
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592 |
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593 public: |
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594 |
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595 static void init_allocation_fail_alot_count(); |
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596 #ifdef ASSERT |
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597 static bool test_metadata_failure(); |
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598 #endif |
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599 }; |
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600 |
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601 int Metadebug::_allocation_fail_alot_count = 0; |
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602 |
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603 // SpaceManager - used by Metaspace to handle allocations |
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604 class SpaceManager : public CHeapObj<mtClass> { |
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605 friend class Metaspace; |
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606 friend class Metadebug; |
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607 |
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608 private: |
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609 |
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610 // protects allocations |
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611 Mutex* const _lock; |
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612 |
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613 // Type of metadata allocated. |
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614 Metaspace::MetadataType _mdtype; |
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615 |
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616 // List of chunks in use by this SpaceManager. Allocations |
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617 // are done from the current chunk. The list is used for deallocating |
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618 // chunks when the SpaceManager is freed. |
6885 | 619 Metachunk* _chunks_in_use[NumberOfInUseLists]; |
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620 Metachunk* _current_chunk; |
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621 |
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622 // Number of small chunks to allocate to a manager |
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623 // If class space manager, small chunks are unlimited |
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624 static uint const _small_chunk_limit; |
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625 |
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626 // Sum of all space in allocated chunks |
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627 size_t _allocated_blocks_words; |
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628 |
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629 // Sum of all allocated chunks |
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630 size_t _allocated_chunks_words; |
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631 size_t _allocated_chunks_count; |
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632 |
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633 // Free lists of blocks are per SpaceManager since they |
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634 // are assumed to be in chunks in use by the SpaceManager |
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635 // and all chunks in use by a SpaceManager are freed when |
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636 // the class loader using the SpaceManager is collected. |
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637 BlockFreelist _block_freelists; |
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638 |
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639 // protects virtualspace and chunk expansions |
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640 static const char* _expand_lock_name; |
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641 static const int _expand_lock_rank; |
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642 static Mutex* const _expand_lock; |
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643 |
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644 private: |
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645 // Accessors |
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646 Metachunk* chunks_in_use(ChunkIndex index) const { return _chunks_in_use[index]; } |
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647 void set_chunks_in_use(ChunkIndex index, Metachunk* v) { |
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648 _chunks_in_use[index] = v; |
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649 } |
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650 |
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651 BlockFreelist* block_freelists() const { |
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652 return (BlockFreelist*) &_block_freelists; |
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653 } |
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654 |
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655 Metaspace::MetadataType mdtype() { return _mdtype; } |
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656 |
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657 VirtualSpaceList* vs_list() const { return Metaspace::get_space_list(_mdtype); } |
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658 ChunkManager* chunk_manager() const { return Metaspace::get_chunk_manager(_mdtype); } |
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659 |
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660 Metachunk* current_chunk() const { return _current_chunk; } |
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661 void set_current_chunk(Metachunk* v) { |
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662 _current_chunk = v; |
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663 } |
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664 |
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665 Metachunk* find_current_chunk(size_t word_size); |
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666 |
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667 // Add chunk to the list of chunks in use |
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668 void add_chunk(Metachunk* v, bool make_current); |
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669 void retire_current_chunk(); |
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670 |
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671 Mutex* lock() const { return _lock; } |
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672 |
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673 const char* chunk_size_name(ChunkIndex index) const; |
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674 |
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675 protected: |
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676 void initialize(); |
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677 |
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678 public: |
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679 SpaceManager(Metaspace::MetadataType mdtype, |
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680 Mutex* lock); |
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681 ~SpaceManager(); |
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682 |
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683 enum ChunkMultiples { |
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684 MediumChunkMultiple = 4 |
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685 }; |
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686 |
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687 bool is_class() { return _mdtype == Metaspace::ClassType; } |
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688 |
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689 // Accessors |
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690 size_t specialized_chunk_size() { return (size_t) is_class() ? ClassSpecializedChunk : SpecializedChunk; } |
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691 size_t small_chunk_size() { return (size_t) is_class() ? ClassSmallChunk : SmallChunk; } |
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692 size_t medium_chunk_size() { return (size_t) is_class() ? ClassMediumChunk : MediumChunk; } |
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693 size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; } |
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694 |
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695 size_t smallest_chunk_size() { return specialized_chunk_size(); } |
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696 |
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697 size_t allocated_blocks_words() const { return _allocated_blocks_words; } |
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698 size_t allocated_blocks_bytes() const { return _allocated_blocks_words * BytesPerWord; } |
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699 size_t allocated_chunks_words() const { return _allocated_chunks_words; } |
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700 size_t allocated_chunks_count() const { return _allocated_chunks_count; } |
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701 |
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702 bool is_humongous(size_t word_size) { return word_size > medium_chunk_size(); } |
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703 |
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704 static Mutex* expand_lock() { return _expand_lock; } |
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705 |
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706 // Increment the per Metaspace and global running sums for Metachunks |
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707 // by the given size. This is used when a Metachunk to added to |
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708 // the in-use list. |
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709 void inc_size_metrics(size_t words); |
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710 // Increment the per Metaspace and global running sums Metablocks by the given |
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711 // size. This is used when a Metablock is allocated. |
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712 void inc_used_metrics(size_t words); |
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713 // Delete the portion of the running sums for this SpaceManager. That is, |
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714 // the globals running sums for the Metachunks and Metablocks are |
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715 // decremented for all the Metachunks in-use by this SpaceManager. |
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716 void dec_total_from_size_metrics(); |
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717 |
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718 // Set the sizes for the initial chunks. |
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719 void get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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720 size_t* chunk_word_size, |
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721 size_t* class_chunk_word_size); |
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722 |
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723 size_t sum_capacity_in_chunks_in_use() const; |
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724 size_t sum_used_in_chunks_in_use() const; |
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725 size_t sum_free_in_chunks_in_use() const; |
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726 size_t sum_waste_in_chunks_in_use() const; |
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727 size_t sum_waste_in_chunks_in_use(ChunkIndex index ) const; |
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728 |
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729 size_t sum_count_in_chunks_in_use(); |
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730 size_t sum_count_in_chunks_in_use(ChunkIndex i); |
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731 |
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732 Metachunk* get_new_chunk(size_t word_size, size_t grow_chunks_by_words); |
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733 |
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734 // Block allocation and deallocation. |
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735 // Allocates a block from the current chunk |
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736 MetaWord* allocate(size_t word_size); |
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737 |
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738 // Helper for allocations |
6885 | 739 MetaWord* allocate_work(size_t word_size); |
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740 |
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741 // Returns a block to the per manager freelist |
6885 | 742 void deallocate(MetaWord* p, size_t word_size); |
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743 |
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744 // Based on the allocation size and a minimum chunk size, |
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745 // returned chunk size (for expanding space for chunk allocation). |
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746 size_t calc_chunk_size(size_t allocation_word_size); |
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747 |
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748 // Called when an allocation from the current chunk fails. |
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749 // Gets a new chunk (may require getting a new virtual space), |
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750 // and allocates from that chunk. |
6885 | 751 MetaWord* grow_and_allocate(size_t word_size); |
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752 |
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753 // Notify memory usage to MemoryService. |
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754 void track_metaspace_memory_usage(); |
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755 |
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756 // debugging support. |
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757 |
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758 void dump(outputStream* const out) const; |
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759 void print_on(outputStream* st) const; |
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760 void locked_print_chunks_in_use_on(outputStream* st) const; |
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761 |
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762 void verify(); |
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763 void verify_chunk_size(Metachunk* chunk); |
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764 NOT_PRODUCT(void mangle_freed_chunks();) |
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765 #ifdef ASSERT |
10183
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766 void verify_allocated_blocks_words(); |
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767 #endif |
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768 |
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769 size_t get_raw_word_size(size_t word_size) { |
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770 size_t byte_size = word_size * BytesPerWord; |
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771 |
12902 | 772 size_t raw_bytes_size = MAX2(byte_size, sizeof(Metablock)); |
773 raw_bytes_size = align_size_up(raw_bytes_size, Metachunk::object_alignment()); | |
774 | |
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775 size_t raw_word_size = raw_bytes_size / BytesPerWord; |
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776 assert(raw_word_size * BytesPerWord == raw_bytes_size, "Size problem"); |
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777 |
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778 return raw_word_size; |
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779 } |
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780 }; |
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781 |
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782 uint const SpaceManager::_small_chunk_limit = 4; |
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783 |
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784 const char* SpaceManager::_expand_lock_name = |
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785 "SpaceManager chunk allocation lock"; |
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786 const int SpaceManager::_expand_lock_rank = Monitor::leaf - 1; |
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787 Mutex* const SpaceManager::_expand_lock = |
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788 new Mutex(SpaceManager::_expand_lock_rank, |
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789 SpaceManager::_expand_lock_name, |
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790 Mutex::_allow_vm_block_flag); |
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791 |
10175 | 792 void VirtualSpaceNode::inc_container_count() { |
793 assert_lock_strong(SpaceManager::expand_lock()); | |
794 _container_count++; | |
795 assert(_container_count == container_count_slow(), | |
796 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
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797 " container_count_slow() " SIZE_FORMAT, |
10175 | 798 _container_count, container_count_slow())); |
799 } | |
800 | |
801 void VirtualSpaceNode::dec_container_count() { | |
802 assert_lock_strong(SpaceManager::expand_lock()); | |
803 _container_count--; | |
804 } | |
805 | |
806 #ifdef ASSERT | |
807 void VirtualSpaceNode::verify_container_count() { | |
808 assert(_container_count == container_count_slow(), | |
809 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
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810 " container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow())); |
10175 | 811 } |
812 #endif | |
813 | |
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814 // BlockFreelist methods |
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815 |
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816 BlockFreelist::BlockFreelist() : _dictionary(NULL) {} |
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817 |
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818 BlockFreelist::~BlockFreelist() { |
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819 if (_dictionary != NULL) { |
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820 if (Verbose && TraceMetadataChunkAllocation) { |
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821 _dictionary->print_free_lists(gclog_or_tty); |
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822 } |
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823 delete _dictionary; |
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824 } |
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825 } |
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826 |
6885 | 827 void BlockFreelist::return_block(MetaWord* p, size_t word_size) { |
12902 | 828 Metablock* free_chunk = ::new (p) Metablock(word_size); |
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829 if (dictionary() == NULL) { |
6885 | 830 _dictionary = new BlockTreeDictionary(); |
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831 } |
6885 | 832 dictionary()->return_chunk(free_chunk); |
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833 } |
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834 |
6885 | 835 MetaWord* BlockFreelist::get_block(size_t word_size) { |
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836 if (dictionary() == NULL) { |
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837 return NULL; |
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838 } |
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839 |
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840 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 841 // Dark matter. Too small for dictionary. |
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842 return NULL; |
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843 } |
6885 | 844 |
845 Metablock* free_block = | |
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846 dictionary()->get_chunk(word_size, FreeBlockDictionary<Metablock>::atLeast); |
6885 | 847 if (free_block == NULL) { |
848 return NULL; | |
849 } | |
850 | |
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851 const size_t block_size = free_block->size(); |
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852 if (block_size > WasteMultiplier * word_size) { |
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853 return_block((MetaWord*)free_block, block_size); |
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854 return NULL; |
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855 } |
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856 |
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857 MetaWord* new_block = (MetaWord*)free_block; |
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858 assert(block_size >= word_size, "Incorrect size of block from freelist"); |
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859 const size_t unused = block_size - word_size; |
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860 if (unused >= TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
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861 return_block(new_block + word_size, unused); |
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862 } |
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863 |
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864 return new_block; |
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865 } |
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866 |
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867 void BlockFreelist::print_on(outputStream* st) const { |
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868 if (dictionary() == NULL) { |
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869 return; |
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870 } |
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871 dictionary()->print_free_lists(st); |
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872 } |
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873 |
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874 // VirtualSpaceNode methods |
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875 |
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876 VirtualSpaceNode::~VirtualSpaceNode() { |
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877 _rs.release(); |
10175 | 878 #ifdef ASSERT |
879 size_t word_size = sizeof(*this) / BytesPerWord; | |
880 Copy::fill_to_words((HeapWord*) this, word_size, 0xf1f1f1f1); | |
881 #endif | |
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882 } |
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883 |
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884 size_t VirtualSpaceNode::used_words_in_vs() const { |
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885 return pointer_delta(top(), bottom(), sizeof(MetaWord)); |
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886 } |
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887 |
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888 // Space committed in the VirtualSpace |
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889 size_t VirtualSpaceNode::capacity_words_in_vs() const { |
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890 return pointer_delta(end(), bottom(), sizeof(MetaWord)); |
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891 } |
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892 |
10183
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893 size_t VirtualSpaceNode::free_words_in_vs() const { |
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894 return pointer_delta(end(), top(), sizeof(MetaWord)); |
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895 } |
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896 |
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897 // Allocates the chunk from the virtual space only. |
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898 // This interface is also used internally for debugging. Not all |
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899 // chunks removed here are necessarily used for allocation. |
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900 Metachunk* VirtualSpaceNode::take_from_committed(size_t chunk_word_size) { |
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901 // Bottom of the new chunk |
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902 MetaWord* chunk_limit = top(); |
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903 assert(chunk_limit != NULL, "Not safe to call this method"); |
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904 |
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905 // The virtual spaces are always expanded by the |
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906 // commit granularity to enforce the following condition. |
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907 // Without this the is_available check will not work correctly. |
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908 assert(_virtual_space.committed_size() == _virtual_space.actual_committed_size(), |
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909 "The committed memory doesn't match the expanded memory."); |
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910 |
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911 if (!is_available(chunk_word_size)) { |
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912 if (TraceMetadataChunkAllocation) { |
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913 gclog_or_tty->print("VirtualSpaceNode::take_from_committed() not available %d words ", chunk_word_size); |
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914 // Dump some information about the virtual space that is nearly full |
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915 print_on(gclog_or_tty); |
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916 } |
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917 return NULL; |
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918 } |
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919 |
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920 // Take the space (bump top on the current virtual space). |
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921 inc_top(chunk_word_size); |
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922 |
10175 | 923 // Initialize the chunk |
924 Metachunk* result = ::new (chunk_limit) Metachunk(chunk_word_size, this); | |
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925 return result; |
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926 } |
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927 |
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928 |
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929 // Expand the virtual space (commit more of the reserved space) |
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930 bool VirtualSpaceNode::expand_by(size_t min_words, size_t preferred_words) { |
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931 size_t min_bytes = min_words * BytesPerWord; |
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932 size_t preferred_bytes = preferred_words * BytesPerWord; |
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933 |
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934 size_t uncommitted = virtual_space()->reserved_size() - virtual_space()->actual_committed_size(); |
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935 |
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936 if (uncommitted < min_bytes) { |
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937 return false; |
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938 } |
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939 |
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940 size_t commit = MIN2(preferred_bytes, uncommitted); |
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941 bool result = virtual_space()->expand_by(commit, false); |
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942 |
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943 assert(result, "Failed to commit memory"); |
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944 |
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945 return result; |
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946 } |
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947 |
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948 Metachunk* VirtualSpaceNode::get_chunk_vs(size_t chunk_word_size) { |
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949 assert_lock_strong(SpaceManager::expand_lock()); |
10175 | 950 Metachunk* result = take_from_committed(chunk_word_size); |
951 if (result != NULL) { | |
952 inc_container_count(); | |
953 } | |
954 return result; | |
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955 } |
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956 |
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957 bool VirtualSpaceNode::initialize() { |
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958 |
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959 if (!_rs.is_reserved()) { |
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960 return false; |
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961 } |
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962 |
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963 // These are necessary restriction to make sure that the virtual space always |
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964 // grows in steps of Metaspace::commit_alignment(). If both base and size are |
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965 // aligned only the middle alignment of the VirtualSpace is used. |
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966 assert_is_ptr_aligned(_rs.base(), Metaspace::commit_alignment()); |
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967 assert_is_size_aligned(_rs.size(), Metaspace::commit_alignment()); |
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968 |
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969 // ReservedSpaces marked as special will have the entire memory |
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970 // pre-committed. Setting a committed size will make sure that |
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971 // committed_size and actual_committed_size agrees. |
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972 size_t pre_committed_size = _rs.special() ? _rs.size() : 0; |
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973 |
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974 bool result = virtual_space()->initialize_with_granularity(_rs, pre_committed_size, |
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975 Metaspace::commit_alignment()); |
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976 if (result) { |
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977 assert(virtual_space()->committed_size() == virtual_space()->actual_committed_size(), |
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978 "Checking that the pre-committed memory was registered by the VirtualSpace"); |
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979 |
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980 set_top((MetaWord*)virtual_space()->low()); |
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981 set_reserved(MemRegion((HeapWord*)_rs.base(), |
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982 (HeapWord*)(_rs.base() + _rs.size()))); |
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983 |
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984 assert(reserved()->start() == (HeapWord*) _rs.base(), |
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985 err_msg("Reserved start was not set properly " PTR_FORMAT |
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986 " != " PTR_FORMAT, reserved()->start(), _rs.base())); |
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987 assert(reserved()->word_size() == _rs.size() / BytesPerWord, |
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988 err_msg("Reserved size was not set properly " SIZE_FORMAT |
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989 " != " SIZE_FORMAT, reserved()->word_size(), |
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990 _rs.size() / BytesPerWord)); |
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991 } |
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992 |
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993 return result; |
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994 } |
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995 |
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996 void VirtualSpaceNode::print_on(outputStream* st) const { |
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997 size_t used = used_words_in_vs(); |
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998 size_t capacity = capacity_words_in_vs(); |
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999 VirtualSpace* vs = virtual_space(); |
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1000 st->print_cr(" space @ " PTR_FORMAT " " SIZE_FORMAT "K, %3d%% used " |
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1001 "[" PTR_FORMAT ", " PTR_FORMAT ", " |
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1002 PTR_FORMAT ", " PTR_FORMAT ")", |
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1003 vs, capacity / K, |
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1004 capacity == 0 ? 0 : used * 100 / capacity, |
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1005 bottom(), top(), end(), |
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1006 vs->high_boundary()); |
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1007 } |
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1008 |
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1009 #ifdef ASSERT |
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1010 void VirtualSpaceNode::mangle() { |
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1011 size_t word_size = capacity_words_in_vs(); |
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1012 Copy::fill_to_words((HeapWord*) low(), word_size, 0xf1f1f1f1); |
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1013 } |
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1014 #endif // ASSERT |
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1015 |
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1016 // VirtualSpaceList methods |
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1017 // Space allocated from the VirtualSpace |
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1018 |
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1019 VirtualSpaceList::~VirtualSpaceList() { |
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1020 VirtualSpaceListIterator iter(virtual_space_list()); |
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1021 while (iter.repeat()) { |
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1022 VirtualSpaceNode* vsl = iter.get_next(); |
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1023 delete vsl; |
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1024 } |
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1025 } |
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1026 |
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1027 void VirtualSpaceList::inc_reserved_words(size_t v) { |
10175 | 1028 assert_lock_strong(SpaceManager::expand_lock()); |
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1029 _reserved_words = _reserved_words + v; |
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1030 } |
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1031 void VirtualSpaceList::dec_reserved_words(size_t v) { |
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1032 assert_lock_strong(SpaceManager::expand_lock()); |
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1033 _reserved_words = _reserved_words - v; |
10175 | 1034 } |
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1035 |
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1036 #define assert_committed_below_limit() \ |
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1037 assert(MetaspaceAux::committed_bytes() <= MaxMetaspaceSize, \ |
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1038 err_msg("Too much committed memory. Committed: " SIZE_FORMAT \ |
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1039 " limit (MaxMetaspaceSize): " SIZE_FORMAT, \ |
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1040 MetaspaceAux::committed_bytes(), MaxMetaspaceSize)); |
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1041 |
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1042 void VirtualSpaceList::inc_committed_words(size_t v) { |
10175 | 1043 assert_lock_strong(SpaceManager::expand_lock()); |
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1044 _committed_words = _committed_words + v; |
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1045 |
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1046 assert_committed_below_limit(); |
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1047 } |
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1048 void VirtualSpaceList::dec_committed_words(size_t v) { |
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1049 assert_lock_strong(SpaceManager::expand_lock()); |
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1050 _committed_words = _committed_words - v; |
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1051 |
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1052 assert_committed_below_limit(); |
10175 | 1053 } |
1054 | |
1055 void VirtualSpaceList::inc_virtual_space_count() { | |
1056 assert_lock_strong(SpaceManager::expand_lock()); | |
1057 _virtual_space_count++; | |
1058 } | |
1059 void VirtualSpaceList::dec_virtual_space_count() { | |
1060 assert_lock_strong(SpaceManager::expand_lock()); | |
1061 _virtual_space_count--; | |
1062 } | |
1063 | |
1064 void ChunkManager::remove_chunk(Metachunk* chunk) { | |
1065 size_t word_size = chunk->word_size(); | |
1066 ChunkIndex index = list_index(word_size); | |
1067 if (index != HumongousIndex) { | |
1068 free_chunks(index)->remove_chunk(chunk); | |
1069 } else { | |
1070 humongous_dictionary()->remove_chunk(chunk); | |
1071 } | |
1072 | |
1073 // Chunk is being removed from the chunks free list. | |
12902 | 1074 dec_free_chunks_total(chunk->word_size()); |
10175 | 1075 } |
1076 | |
1077 // Walk the list of VirtualSpaceNodes and delete | |
1078 // nodes with a 0 container_count. Remove Metachunks in | |
1079 // the node from their respective freelists. | |
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1080 void VirtualSpaceList::purge(ChunkManager* chunk_manager) { |
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1081 assert(SafepointSynchronize::is_at_safepoint(), "must be called at safepoint for contains to work"); |
10175 | 1082 assert_lock_strong(SpaceManager::expand_lock()); |
1083 // Don't use a VirtualSpaceListIterator because this | |
1084 // list is being changed and a straightforward use of an iterator is not safe. | |
1085 VirtualSpaceNode* purged_vsl = NULL; | |
1086 VirtualSpaceNode* prev_vsl = virtual_space_list(); | |
1087 VirtualSpaceNode* next_vsl = prev_vsl; | |
1088 while (next_vsl != NULL) { | |
1089 VirtualSpaceNode* vsl = next_vsl; | |
1090 next_vsl = vsl->next(); | |
1091 // Don't free the current virtual space since it will likely | |
1092 // be needed soon. | |
1093 if (vsl->container_count() == 0 && vsl != current_virtual_space()) { | |
1094 // Unlink it from the list | |
1095 if (prev_vsl == vsl) { | |
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1096 // This is the case of the current node being the first node. |
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1097 assert(vsl == virtual_space_list(), "Expected to be the first node"); |
10175 | 1098 set_virtual_space_list(vsl->next()); |
1099 } else { | |
1100 prev_vsl->set_next(vsl->next()); | |
1101 } | |
1102 | |
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1103 vsl->purge(chunk_manager); |
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1104 dec_reserved_words(vsl->reserved_words()); |
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1105 dec_committed_words(vsl->committed_words()); |
10175 | 1106 dec_virtual_space_count(); |
1107 purged_vsl = vsl; | |
1108 delete vsl; | |
1109 } else { | |
1110 prev_vsl = vsl; | |
1111 } | |
1112 } | |
1113 #ifdef ASSERT | |
1114 if (purged_vsl != NULL) { | |
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1115 // List should be stable enough to use an iterator here. |
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1116 VirtualSpaceListIterator iter(virtual_space_list()); |
10175 | 1117 while (iter.repeat()) { |
1118 VirtualSpaceNode* vsl = iter.get_next(); | |
1119 assert(vsl != purged_vsl, "Purge of vsl failed"); | |
1120 } | |
1121 } | |
1122 #endif | |
1123 } | |
1124 | |
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1125 |
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1126 // This function looks at the mmap regions in the metaspace without locking. |
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1127 // The chunks are added with store ordering and not deleted except for at |
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1128 // unloading time during a safepoint. |
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1129 bool VirtualSpaceList::contains(const void* ptr) { |
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1130 // List should be stable enough to use an iterator here because removing virtual |
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1131 // space nodes is only allowed at a safepoint. |
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1132 VirtualSpaceListIterator iter(virtual_space_list()); |
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1133 while (iter.repeat()) { |
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1134 VirtualSpaceNode* vsn = iter.get_next(); |
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1135 if (vsn->contains(ptr)) { |
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1136 return true; |
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1137 } |
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1138 } |
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1139 return false; |
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1140 } |
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1141 |
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1142 void VirtualSpaceList::retire_current_virtual_space() { |
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1143 assert_lock_strong(SpaceManager::expand_lock()); |
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1144 |
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1145 VirtualSpaceNode* vsn = current_virtual_space(); |
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1146 |
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1147 ChunkManager* cm = is_class() ? Metaspace::chunk_manager_class() : |
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1148 Metaspace::chunk_manager_metadata(); |
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1149 |
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1150 vsn->retire(cm); |
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1151 } |
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1152 |
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1153 void VirtualSpaceNode::retire(ChunkManager* chunk_manager) { |
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1154 for (int i = (int)MediumIndex; i >= (int)ZeroIndex; --i) { |
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1155 ChunkIndex index = (ChunkIndex)i; |
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1156 size_t chunk_size = chunk_manager->free_chunks(index)->size(); |
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1157 |
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1158 while (free_words_in_vs() >= chunk_size) { |
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1159 DEBUG_ONLY(verify_container_count();) |
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1160 Metachunk* chunk = get_chunk_vs(chunk_size); |
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1161 assert(chunk != NULL, "allocation should have been successful"); |
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1162 |
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1163 chunk_manager->return_chunks(index, chunk); |
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1164 chunk_manager->inc_free_chunks_total(chunk_size); |
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1165 DEBUG_ONLY(verify_container_count();) |
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1166 } |
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1167 } |
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1168 assert(free_words_in_vs() == 0, "should be empty now"); |
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1169 } |
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1170 |
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1171 VirtualSpaceList::VirtualSpaceList(size_t word_size) : |
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1172 _is_class(false), |
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1173 _virtual_space_list(NULL), |
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1174 _current_virtual_space(NULL), |
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1175 _reserved_words(0), |
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1176 _committed_words(0), |
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1177 _virtual_space_count(0) { |
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1178 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1179 Mutex::_no_safepoint_check_flag); |
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1180 create_new_virtual_space(word_size); |
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1181 } |
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1182 |
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1183 VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) : |
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1184 _is_class(true), |
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1185 _virtual_space_list(NULL), |
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1186 _current_virtual_space(NULL), |
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1187 _reserved_words(0), |
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1188 _committed_words(0), |
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1189 _virtual_space_count(0) { |
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1190 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1191 Mutex::_no_safepoint_check_flag); |
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1192 VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs); |
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1193 bool succeeded = class_entry->initialize(); |
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1194 if (succeeded) { |
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1195 link_vs(class_entry); |
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1196 } |
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1197 } |
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1198 |
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1199 size_t VirtualSpaceList::free_bytes() { |
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1200 return virtual_space_list()->free_words_in_vs() * BytesPerWord; |
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1201 } |
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1202 |
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1203 // Allocate another meta virtual space and add it to the list. |
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1204 bool VirtualSpaceList::create_new_virtual_space(size_t vs_word_size) { |
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1205 assert_lock_strong(SpaceManager::expand_lock()); |
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1206 |
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1207 if (is_class()) { |
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1208 assert(false, "We currently don't support more than one VirtualSpace for" |
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1209 " the compressed class space. The initialization of the" |
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1210 " CCS uses another code path and should not hit this path."); |
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1211 return false; |
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1212 } |
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1213 |
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1214 if (vs_word_size == 0) { |
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1215 assert(false, "vs_word_size should always be at least _reserve_alignment large."); |
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1216 return false; |
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1217 } |
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1218 |
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1219 // Reserve the space |
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1220 size_t vs_byte_size = vs_word_size * BytesPerWord; |
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1221 assert_is_size_aligned(vs_byte_size, Metaspace::reserve_alignment()); |
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1222 |
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1223 // Allocate the meta virtual space and initialize it. |
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1224 VirtualSpaceNode* new_entry = new VirtualSpaceNode(vs_byte_size); |
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1225 if (!new_entry->initialize()) { |
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1226 delete new_entry; |
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1227 return false; |
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1228 } else { |
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1229 assert(new_entry->reserved_words() == vs_word_size, |
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1230 "Reserved memory size differs from requested memory size"); |
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1231 // ensure lock-free iteration sees fully initialized node |
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1232 OrderAccess::storestore(); |
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1233 link_vs(new_entry); |
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1234 return true; |
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1235 } |
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1236 } |
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1237 |
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1238 void VirtualSpaceList::link_vs(VirtualSpaceNode* new_entry) { |
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1239 if (virtual_space_list() == NULL) { |
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1240 set_virtual_space_list(new_entry); |
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1241 } else { |
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1242 current_virtual_space()->set_next(new_entry); |
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1243 } |
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1244 set_current_virtual_space(new_entry); |
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1245 inc_reserved_words(new_entry->reserved_words()); |
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1246 inc_committed_words(new_entry->committed_words()); |
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1247 inc_virtual_space_count(); |
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1248 #ifdef ASSERT |
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1249 new_entry->mangle(); |
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1250 #endif |
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1251 if (TraceMetavirtualspaceAllocation && Verbose) { |
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1252 VirtualSpaceNode* vsl = current_virtual_space(); |
12240
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1253 vsl->print_on(gclog_or_tty); |
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1254 } |
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1255 } |
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1256 |
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1257 bool VirtualSpaceList::expand_node_by(VirtualSpaceNode* node, |
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1258 size_t min_words, |
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1259 size_t preferred_words) { |
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1260 size_t before = node->committed_words(); |
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1261 |
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1262 bool result = node->expand_by(min_words, preferred_words); |
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1263 |
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1264 size_t after = node->committed_words(); |
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1265 |
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1266 // after and before can be the same if the memory was pre-committed. |
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1267 assert(after >= before, "Inconsistency"); |
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1268 inc_committed_words(after - before); |
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1269 |
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1270 return result; |
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1271 } |
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1272 |
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1273 bool VirtualSpaceList::expand_by(size_t min_words, size_t preferred_words) { |
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1274 assert_is_size_aligned(min_words, Metaspace::commit_alignment_words()); |
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1275 assert_is_size_aligned(preferred_words, Metaspace::commit_alignment_words()); |
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1276 assert(min_words <= preferred_words, "Invalid arguments"); |
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1277 |
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1278 if (!MetaspaceGC::can_expand(min_words, this->is_class())) { |
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1279 return false; |
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1280 } |
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1281 |
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1282 size_t allowed_expansion_words = MetaspaceGC::allowed_expansion(); |
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1283 if (allowed_expansion_words < min_words) { |
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1284 return false; |
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1285 } |
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1286 |
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1287 size_t max_expansion_words = MIN2(preferred_words, allowed_expansion_words); |
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1288 |
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1289 // Commit more memory from the the current virtual space. |
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1290 bool vs_expanded = expand_node_by(current_virtual_space(), |
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1291 min_words, |
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1292 max_expansion_words); |
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1293 if (vs_expanded) { |
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1294 return true; |
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1295 } |
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1296 retire_current_virtual_space(); |
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1297 |
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1298 // Get another virtual space. |
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1299 size_t grow_vs_words = MAX2((size_t)VirtualSpaceSize, preferred_words); |
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1300 grow_vs_words = align_size_up(grow_vs_words, Metaspace::reserve_alignment_words()); |
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1301 |
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1302 if (create_new_virtual_space(grow_vs_words)) { |
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1303 if (current_virtual_space()->is_pre_committed()) { |
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1304 // The memory was pre-committed, so we are done here. |
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1305 assert(min_words <= current_virtual_space()->committed_words(), |
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1306 "The new VirtualSpace was pre-committed, so it" |
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1307 "should be large enough to fit the alloc request."); |
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1308 return true; |
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1309 } |
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1310 |
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1311 return expand_node_by(current_virtual_space(), |
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1312 min_words, |
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1313 max_expansion_words); |
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1314 } |
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1315 |
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1316 return false; |
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1317 } |
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1318 |
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1319 Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size, |
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1320 size_t grow_chunks_by_words, |
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1321 size_t medium_chunk_bunch) { |
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1322 |
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1323 // Allocate a chunk out of the current virtual space. |
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1324 Metachunk* next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1325 |
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1326 if (next != NULL) { |
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1327 return next; |
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1328 } |
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1329 |
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1330 // The expand amount is currently only determined by the requested sizes |
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1331 // and not how much committed memory is left in the current virtual space. |
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1332 |
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1333 size_t min_word_size = align_size_up(grow_chunks_by_words, Metaspace::commit_alignment_words()); |
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1334 size_t preferred_word_size = align_size_up(medium_chunk_bunch, Metaspace::commit_alignment_words()); |
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1335 if (min_word_size >= preferred_word_size) { |
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1336 // Can happen when humongous chunks are allocated. |
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1337 preferred_word_size = min_word_size; |
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1338 } |
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1339 |
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1340 bool expanded = expand_by(min_word_size, preferred_word_size); |
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1341 if (expanded) { |
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1342 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1343 assert(next != NULL, "The allocation was expected to succeed after the expansion"); |
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1344 } |
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1345 |
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1346 return next; |
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1347 } |
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1348 |
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1349 void VirtualSpaceList::print_on(outputStream* st) const { |
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1350 if (TraceMetadataChunkAllocation && Verbose) { |
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1351 VirtualSpaceListIterator iter(virtual_space_list()); |
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1352 while (iter.repeat()) { |
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1353 VirtualSpaceNode* node = iter.get_next(); |
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1354 node->print_on(st); |
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1355 } |
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1356 } |
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1357 } |
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1358 |
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1359 // MetaspaceGC methods |
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1360 |
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1361 // VM_CollectForMetadataAllocation is the vm operation used to GC. |
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1362 // Within the VM operation after the GC the attempt to allocate the metadata |
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1363 // should succeed. If the GC did not free enough space for the metaspace |
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1364 // allocation, the HWM is increased so that another virtualspace will be |
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1365 // allocated for the metadata. With perm gen the increase in the perm |
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1366 // gen had bounds, MinMetaspaceExpansion and MaxMetaspaceExpansion. The |
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1367 // metaspace policy uses those as the small and large steps for the HWM. |
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1368 // |
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1369 // After the GC the compute_new_size() for MetaspaceGC is called to |
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1370 // resize the capacity of the metaspaces. The current implementation |
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1371 // is based on the flags MinMetaspaceFreeRatio and MaxMetaspaceFreeRatio used |
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1372 // to resize the Java heap by some GC's. New flags can be implemented |
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1373 // if really needed. MinMetaspaceFreeRatio is used to calculate how much |
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1374 // free space is desirable in the metaspace capacity to decide how much |
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1375 // to increase the HWM. MaxMetaspaceFreeRatio is used to decide how much |
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1376 // free space is desirable in the metaspace capacity before decreasing |
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1377 // the HWM. |
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1378 |
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1379 // Calculate the amount to increase the high water mark (HWM). |
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1380 // Increase by a minimum amount (MinMetaspaceExpansion) so that |
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1381 // another expansion is not requested too soon. If that is not |
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1382 // enough to satisfy the allocation, increase by MaxMetaspaceExpansion. |
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1383 // If that is still not enough, expand by the size of the allocation |
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1384 // plus some. |
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1385 size_t MetaspaceGC::delta_capacity_until_GC(size_t bytes) { |
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1386 size_t min_delta = MinMetaspaceExpansion; |
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1387 size_t max_delta = MaxMetaspaceExpansion; |
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1388 size_t delta = align_size_up(bytes, Metaspace::commit_alignment()); |
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1389 |
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1390 if (delta <= min_delta) { |
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1391 delta = min_delta; |
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1392 } else if (delta <= max_delta) { |
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1393 // Don't want to hit the high water mark on the next |
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1394 // allocation so make the delta greater than just enough |
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1395 // for this allocation. |
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1396 delta = max_delta; |
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1397 } else { |
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1398 // This allocation is large but the next ones are probably not |
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1399 // so increase by the minimum. |
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1400 delta = delta + min_delta; |
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1401 } |
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1402 |
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1403 assert_is_size_aligned(delta, Metaspace::commit_alignment()); |
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1404 |
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1405 return delta; |
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1406 } |
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1407 |
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1408 size_t MetaspaceGC::capacity_until_GC() { |
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1409 size_t value = (size_t)OrderAccess::load_ptr_acquire(&_capacity_until_GC); |
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1410 assert(value >= MetaspaceSize, "Not initialied properly?"); |
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1411 return value; |
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1412 } |
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1413 |
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1414 size_t MetaspaceGC::inc_capacity_until_GC(size_t v) { |
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1415 assert_is_size_aligned(v, Metaspace::commit_alignment()); |
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1416 |
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1417 return (size_t)Atomic::add_ptr(v, &_capacity_until_GC); |
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1418 } |
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1419 |
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1420 size_t MetaspaceGC::dec_capacity_until_GC(size_t v) { |
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1421 assert_is_size_aligned(v, Metaspace::commit_alignment()); |
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1422 |
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1423 return (size_t)Atomic::add_ptr(-(intptr_t)v, &_capacity_until_GC); |
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1424 } |
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1425 |
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1426 bool MetaspaceGC::can_expand(size_t word_size, bool is_class) { |
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1427 // Check if the compressed class space is full. |
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1428 if (is_class && Metaspace::using_class_space()) { |
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1429 size_t class_committed = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
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1430 if (class_committed + word_size * BytesPerWord > CompressedClassSpaceSize) { |
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1431 return false; |
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1432 } |
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1433 } |
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1434 |
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1435 // Check if the user has imposed a limit on the metaspace memory. |
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1436 size_t committed_bytes = MetaspaceAux::committed_bytes(); |
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1437 if (committed_bytes + word_size * BytesPerWord > MaxMetaspaceSize) { |
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1438 return false; |
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1439 } |
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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::allowed_expansion() { |
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1445 size_t committed_bytes = MetaspaceAux::committed_bytes(); |
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1446 |
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1447 size_t left_until_max = MaxMetaspaceSize - committed_bytes; |
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1448 |
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1449 // Always grant expansion if we are initiating the JVM, |
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1450 // or if the GC_locker is preventing GCs. |
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1451 if (!is_init_completed() || GC_locker::is_active_and_needs_gc()) { |
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1452 return left_until_max / BytesPerWord; |
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1453 } |
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1454 |
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1455 size_t capacity_until_gc = capacity_until_GC(); |
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1456 |
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1457 if (capacity_until_gc <= committed_bytes) { |
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1458 return 0; |
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1459 } |
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1460 |
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1461 size_t left_until_GC = capacity_until_gc - committed_bytes; |
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1462 size_t left_to_commit = MIN2(left_until_GC, left_until_max); |
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1463 |
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1464 return left_to_commit / BytesPerWord; |
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1465 } |
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1466 |
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1467 void MetaspaceGC::compute_new_size() { |
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1468 assert(_shrink_factor <= 100, "invalid shrink factor"); |
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1469 uint current_shrink_factor = _shrink_factor; |
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1470 _shrink_factor = 0; |
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1471 |
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1472 const size_t used_after_gc = MetaspaceAux::capacity_bytes(); |
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1473 const size_t capacity_until_GC = MetaspaceGC::capacity_until_GC(); |
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1474 |
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1475 const double minimum_free_percentage = MinMetaspaceFreeRatio / 100.0; |
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1476 const double maximum_used_percentage = 1.0 - minimum_free_percentage; |
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1477 |
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1478 const double min_tmp = used_after_gc / maximum_used_percentage; |
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1479 size_t minimum_desired_capacity = |
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1480 (size_t)MIN2(min_tmp, double(max_uintx)); |
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1481 // Don't shrink less than the initial generation size |
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1482 minimum_desired_capacity = MAX2(minimum_desired_capacity, |
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1483 MetaspaceSize); |
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1484 |
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1485 if (PrintGCDetails && Verbose) { |
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1486 gclog_or_tty->print_cr("\nMetaspaceGC::compute_new_size: "); |
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1487 gclog_or_tty->print_cr(" " |
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1488 " minimum_free_percentage: %6.2f" |
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1489 " maximum_used_percentage: %6.2f", |
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1490 minimum_free_percentage, |
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1491 maximum_used_percentage); |
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1492 gclog_or_tty->print_cr(" " |
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1493 " used_after_gc : %6.1fKB", |
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1494 used_after_gc / (double) K); |
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1495 } |
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1496 |
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1497 |
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1498 size_t shrink_bytes = 0; |
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1499 if (capacity_until_GC < minimum_desired_capacity) { |
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1500 // If we have less capacity below the metaspace HWM, then |
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1501 // increment the HWM. |
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1502 size_t expand_bytes = minimum_desired_capacity - capacity_until_GC; |
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1503 expand_bytes = align_size_up(expand_bytes, Metaspace::commit_alignment()); |
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1504 // Don't expand unless it's significant |
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1505 if (expand_bytes >= MinMetaspaceExpansion) { |
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1506 size_t new_capacity_until_GC = MetaspaceGC::inc_capacity_until_GC(expand_bytes); |
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1507 Metaspace::tracer()->report_gc_threshold(capacity_until_GC, |
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1508 new_capacity_until_GC, |
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1509 MetaspaceGCThresholdUpdater::ComputeNewSize); |
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1510 if (PrintGCDetails && Verbose) { |
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1511 gclog_or_tty->print_cr(" expanding:" |
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1512 " minimum_desired_capacity: %6.1fKB" |
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1513 " expand_bytes: %6.1fKB" |
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1514 " MinMetaspaceExpansion: %6.1fKB" |
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1515 " new metaspace HWM: %6.1fKB", |
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1516 minimum_desired_capacity / (double) K, |
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1517 expand_bytes / (double) K, |
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1518 MinMetaspaceExpansion / (double) K, |
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1519 new_capacity_until_GC / (double) K); |
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1520 } |
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1521 } |
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1522 return; |
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1523 } |
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1524 |
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1525 // No expansion, now see if we want to shrink |
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1526 // We would never want to shrink more than this |
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1527 size_t max_shrink_bytes = capacity_until_GC - minimum_desired_capacity; |
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1528 assert(max_shrink_bytes >= 0, err_msg("max_shrink_bytes " SIZE_FORMAT, |
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1529 max_shrink_bytes)); |
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1530 |
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1531 // Should shrinking be considered? |
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1532 if (MaxMetaspaceFreeRatio < 100) { |
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1533 const double maximum_free_percentage = MaxMetaspaceFreeRatio / 100.0; |
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1534 const double minimum_used_percentage = 1.0 - maximum_free_percentage; |
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1535 const double max_tmp = used_after_gc / minimum_used_percentage; |
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1536 size_t maximum_desired_capacity = (size_t)MIN2(max_tmp, double(max_uintx)); |
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1537 maximum_desired_capacity = MAX2(maximum_desired_capacity, |
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1538 MetaspaceSize); |
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1539 if (PrintGCDetails && Verbose) { |
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1540 gclog_or_tty->print_cr(" " |
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1541 " maximum_free_percentage: %6.2f" |
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1542 " minimum_used_percentage: %6.2f", |
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1543 maximum_free_percentage, |
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1544 minimum_used_percentage); |
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1545 gclog_or_tty->print_cr(" " |
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1546 " minimum_desired_capacity: %6.1fKB" |
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1547 " maximum_desired_capacity: %6.1fKB", |
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1548 minimum_desired_capacity / (double) K, |
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1549 maximum_desired_capacity / (double) K); |
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1550 } |
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1551 |
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1552 assert(minimum_desired_capacity <= maximum_desired_capacity, |
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1553 "sanity check"); |
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1554 |
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1555 if (capacity_until_GC > maximum_desired_capacity) { |
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1556 // Capacity too large, compute shrinking size |
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1557 shrink_bytes = capacity_until_GC - maximum_desired_capacity; |
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1558 // We don't want shrink all the way back to initSize if people call |
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1559 // System.gc(), because some programs do that between "phases" and then |
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1560 // we'd just have to grow the heap up again for the next phase. So we |
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1561 // damp the shrinking: 0% on the first call, 10% on the second call, 40% |
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1562 // on the third call, and 100% by the fourth call. But if we recompute |
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1563 // size without shrinking, it goes back to 0%. |
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1564 shrink_bytes = shrink_bytes / 100 * current_shrink_factor; |
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1565 |
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1566 shrink_bytes = align_size_down(shrink_bytes, Metaspace::commit_alignment()); |
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1567 |
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1568 assert(shrink_bytes <= max_shrink_bytes, |
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1569 err_msg("invalid shrink size " SIZE_FORMAT " not <= " SIZE_FORMAT, |
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1570 shrink_bytes, max_shrink_bytes)); |
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1571 if (current_shrink_factor == 0) { |
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1572 _shrink_factor = 10; |
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1573 } else { |
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1574 _shrink_factor = MIN2(current_shrink_factor * 4, (uint) 100); |
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1575 } |
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1576 if (PrintGCDetails && Verbose) { |
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1577 gclog_or_tty->print_cr(" " |
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1578 " shrinking:" |
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1579 " initSize: %.1fK" |
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1580 " maximum_desired_capacity: %.1fK", |
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1581 MetaspaceSize / (double) K, |
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1582 maximum_desired_capacity / (double) K); |
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1583 gclog_or_tty->print_cr(" " |
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1584 " shrink_bytes: %.1fK" |
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1585 " current_shrink_factor: %d" |
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1586 " new shrink factor: %d" |
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1587 " MinMetaspaceExpansion: %.1fK", |
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1588 shrink_bytes / (double) K, |
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1589 current_shrink_factor, |
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1590 _shrink_factor, |
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1591 MinMetaspaceExpansion / (double) K); |
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1592 } |
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1593 } |
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1594 } |
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1595 |
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1596 // Don't shrink unless it's significant |
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1597 if (shrink_bytes >= MinMetaspaceExpansion && |
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1598 ((capacity_until_GC - shrink_bytes) >= MetaspaceSize)) { |
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1599 size_t new_capacity_until_GC = MetaspaceGC::dec_capacity_until_GC(shrink_bytes); |
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1600 Metaspace::tracer()->report_gc_threshold(capacity_until_GC, |
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1601 new_capacity_until_GC, |
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1602 MetaspaceGCThresholdUpdater::ComputeNewSize); |
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1603 } |
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1604 } |
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1605 |
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1606 // Metadebug methods |
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1607 |
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1608 void Metadebug::init_allocation_fail_alot_count() { |
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1609 if (MetadataAllocationFailALot) { |
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1610 _allocation_fail_alot_count = |
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1611 1+(long)((double)MetadataAllocationFailALotInterval*os::random()/(max_jint+1.0)); |
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1612 } |
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1613 } |
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1614 |
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1615 #ifdef ASSERT |
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1616 bool Metadebug::test_metadata_failure() { |
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1617 if (MetadataAllocationFailALot && |
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1618 Threads::is_vm_complete()) { |
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1619 if (_allocation_fail_alot_count > 0) { |
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1620 _allocation_fail_alot_count--; |
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1621 } else { |
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1622 if (TraceMetadataChunkAllocation && Verbose) { |
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1623 gclog_or_tty->print_cr("Metadata allocation failing for " |
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1624 "MetadataAllocationFailALot"); |
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1625 } |
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1626 init_allocation_fail_alot_count(); |
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1627 return true; |
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|
1628 } |
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1629 } |
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1630 return false; |
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1631 } |
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1632 #endif |
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1633 |
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1634 // ChunkManager methods |
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1635 |
12235 | 1636 size_t ChunkManager::free_chunks_total_words() { |
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1637 return _free_chunks_total; |
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1638 } |
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1639 |
12235 | 1640 size_t ChunkManager::free_chunks_total_bytes() { |
1641 return free_chunks_total_words() * BytesPerWord; | |
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1642 } |
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1643 |
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1644 size_t ChunkManager::free_chunks_count() { |
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1645 #ifdef ASSERT |
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1646 if (!UseConcMarkSweepGC && !SpaceManager::expand_lock()->is_locked()) { |
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1647 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1648 Mutex::_no_safepoint_check_flag); |
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1649 // This lock is only needed in debug because the verification |
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1650 // of the _free_chunks_totals walks the list of free chunks |
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|
1651 slow_locked_verify_free_chunks_count(); |
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1652 } |
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1653 #endif |
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1654 return _free_chunks_count; |
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1655 } |
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1656 |
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1657 void ChunkManager::locked_verify_free_chunks_total() { |
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1658 assert_lock_strong(SpaceManager::expand_lock()); |
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1659 assert(sum_free_chunks() == _free_chunks_total, |
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1660 err_msg("_free_chunks_total " SIZE_FORMAT " is not the" |
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1661 " same as sum " SIZE_FORMAT, _free_chunks_total, |
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1662 sum_free_chunks())); |
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1663 } |
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|
1664 |
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1665 void ChunkManager::verify_free_chunks_total() { |
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1666 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1667 Mutex::_no_safepoint_check_flag); |
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1668 locked_verify_free_chunks_total(); |
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|
1669 } |
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1670 |
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1671 void ChunkManager::locked_verify_free_chunks_count() { |
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1672 assert_lock_strong(SpaceManager::expand_lock()); |
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1673 assert(sum_free_chunks_count() == _free_chunks_count, |
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1674 err_msg("_free_chunks_count " SIZE_FORMAT " is not the" |
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1675 " same as sum " SIZE_FORMAT, _free_chunks_count, |
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1676 sum_free_chunks_count())); |
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1677 } |
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1678 |
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1679 void ChunkManager::verify_free_chunks_count() { |
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1680 #ifdef ASSERT |
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1681 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1682 Mutex::_no_safepoint_check_flag); |
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1683 locked_verify_free_chunks_count(); |
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1684 #endif |
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1685 } |
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1686 |
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1687 void ChunkManager::verify() { |
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1688 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1689 Mutex::_no_safepoint_check_flag); |
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1690 locked_verify(); |
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1691 } |
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1692 |
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1693 void ChunkManager::locked_verify() { |
6885 | 1694 locked_verify_free_chunks_count(); |
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1695 locked_verify_free_chunks_total(); |
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1696 } |
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1697 |
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1698 void ChunkManager::locked_print_free_chunks(outputStream* st) { |
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1699 assert_lock_strong(SpaceManager::expand_lock()); |
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1700 st->print_cr("Free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1701 _free_chunks_total, _free_chunks_count); |
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1702 } |
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1703 |
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1704 void ChunkManager::locked_print_sum_free_chunks(outputStream* st) { |
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1705 assert_lock_strong(SpaceManager::expand_lock()); |
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1706 st->print_cr("Sum free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1707 sum_free_chunks(), sum_free_chunks_count()); |
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1708 } |
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1709 ChunkList* ChunkManager::free_chunks(ChunkIndex index) { |
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1710 return &_free_chunks[index]; |
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1711 } |
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1712 |
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1713 // These methods that sum the free chunk lists are used in printing |
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1714 // methods that are used in product builds. |
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1715 size_t ChunkManager::sum_free_chunks() { |
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1716 assert_lock_strong(SpaceManager::expand_lock()); |
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1717 size_t result = 0; |
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1718 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
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1719 ChunkList* list = free_chunks(i); |
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1720 |
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1721 if (list == NULL) { |
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1722 continue; |
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1723 } |
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1724 |
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1725 result = result + list->count() * list->size(); |
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1726 } |
6885 | 1727 result = result + humongous_dictionary()->total_size(); |
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1728 return result; |
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1729 } |
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1730 |
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1731 size_t ChunkManager::sum_free_chunks_count() { |
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1732 assert_lock_strong(SpaceManager::expand_lock()); |
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1733 size_t count = 0; |
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1734 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
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1735 ChunkList* list = free_chunks(i); |
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1736 if (list == NULL) { |
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1737 continue; |
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1738 } |
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1739 count = count + list->count(); |
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1740 } |
6885 | 1741 count = count + humongous_dictionary()->total_free_blocks(); |
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1742 return count; |
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1743 } |
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1744 |
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1745 ChunkList* ChunkManager::find_free_chunks_list(size_t word_size) { |
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1746 ChunkIndex index = list_index(word_size); |
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1747 assert(index < HumongousIndex, "No humongous list"); |
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1748 return free_chunks(index); |
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1749 } |
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1750 |
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1751 Metachunk* ChunkManager::free_chunks_get(size_t word_size) { |
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1752 assert_lock_strong(SpaceManager::expand_lock()); |
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1753 |
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1754 slow_locked_verify(); |
6885 | 1755 |
1756 Metachunk* chunk = NULL; | |
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1757 if (list_index(word_size) != HumongousIndex) { |
6885 | 1758 ChunkList* free_list = find_free_chunks_list(word_size); |
1759 assert(free_list != NULL, "Sanity check"); | |
1760 | |
1761 chunk = free_list->head(); | |
1762 | |
1763 if (chunk == NULL) { | |
1764 return NULL; | |
1765 } | |
1766 | |
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1767 // Remove the chunk as the head of the list. |
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1768 free_list->remove_chunk(chunk); |
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1769 |
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1770 if (TraceMetadataChunkAllocation && Verbose) { |
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1771 gclog_or_tty->print_cr("ChunkManager::free_chunks_get: free_list " |
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1772 PTR_FORMAT " head " PTR_FORMAT " size " SIZE_FORMAT, |
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1773 free_list, chunk, chunk->word_size()); |
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1774 } |
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1775 } else { |
6885 | 1776 chunk = humongous_dictionary()->get_chunk( |
1777 word_size, | |
1778 FreeBlockDictionary<Metachunk>::atLeast); | |
1779 | |
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1780 if (chunk == NULL) { |
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1781 return NULL; |
6885 | 1782 } |
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1783 |
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1784 if (TraceMetadataHumongousAllocation) { |
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1785 size_t waste = chunk->word_size() - word_size; |
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1786 gclog_or_tty->print_cr("Free list allocate humongous chunk size " |
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1787 SIZE_FORMAT " for requested size " SIZE_FORMAT |
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1788 " waste " SIZE_FORMAT, |
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1789 chunk->word_size(), word_size, waste); |
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1790 } |
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1791 } |
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1792 |
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1793 // Chunk is being removed from the chunks free list. |
12902 | 1794 dec_free_chunks_total(chunk->word_size()); |
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1795 |
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1796 // Remove it from the links to this freelist |
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1797 chunk->set_next(NULL); |
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1798 chunk->set_prev(NULL); |
10175 | 1799 #ifdef ASSERT |
1800 // Chunk is no longer on any freelist. Setting to false make container_count_slow() | |
1801 // work. | |
12902 | 1802 chunk->set_is_tagged_free(false); |
10175 | 1803 #endif |
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1804 chunk->container()->inc_container_count(); |
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1805 |
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1806 slow_locked_verify(); |
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1807 return chunk; |
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1808 } |
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1809 |
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1810 Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) { |
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1811 assert_lock_strong(SpaceManager::expand_lock()); |
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1812 slow_locked_verify(); |
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1813 |
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1814 // Take from the beginning of the list |
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1815 Metachunk* chunk = free_chunks_get(word_size); |
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1816 if (chunk == NULL) { |
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1817 return NULL; |
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1818 } |
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1819 |
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1820 assert((word_size <= chunk->word_size()) || |
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1821 list_index(chunk->word_size() == HumongousIndex), |
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1822 "Non-humongous variable sized chunk"); |
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1823 if (TraceMetadataChunkAllocation) { |
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1824 size_t list_count; |
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1825 if (list_index(word_size) < HumongousIndex) { |
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1826 ChunkList* list = find_free_chunks_list(word_size); |
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1827 list_count = list->count(); |
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1828 } else { |
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1829 list_count = humongous_dictionary()->total_count(); |
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1830 } |
12240
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1831 gclog_or_tty->print("ChunkManager::chunk_freelist_allocate: " PTR_FORMAT " chunk " |
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1832 PTR_FORMAT " size " SIZE_FORMAT " count " SIZE_FORMAT " ", |
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1833 this, chunk, chunk->word_size(), list_count); |
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1834 locked_print_free_chunks(gclog_or_tty); |
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1835 } |
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1836 |
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1837 return chunk; |
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1838 } |
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1839 |
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1840 void ChunkManager::print_on(outputStream* out) const { |
6885 | 1841 if (PrintFLSStatistics != 0) { |
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1842 const_cast<ChunkManager *>(this)->humongous_dictionary()->report_statistics(); |
6885 | 1843 } |
1844 } | |
1845 | |
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1846 // SpaceManager methods |
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1847 |
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1848 void SpaceManager::get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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1849 size_t* chunk_word_size, |
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1850 size_t* class_chunk_word_size) { |
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1851 switch (type) { |
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1852 case Metaspace::BootMetaspaceType: |
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1853 *chunk_word_size = Metaspace::first_chunk_word_size(); |
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1854 *class_chunk_word_size = Metaspace::first_class_chunk_word_size(); |
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1855 break; |
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1856 case Metaspace::ROMetaspaceType: |
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1857 *chunk_word_size = SharedReadOnlySize / wordSize; |
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1858 *class_chunk_word_size = ClassSpecializedChunk; |
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1859 break; |
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1860 case Metaspace::ReadWriteMetaspaceType: |
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1861 *chunk_word_size = SharedReadWriteSize / wordSize; |
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1862 *class_chunk_word_size = ClassSpecializedChunk; |
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1863 break; |
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1864 case Metaspace::AnonymousMetaspaceType: |
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1865 case Metaspace::ReflectionMetaspaceType: |
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1866 *chunk_word_size = SpecializedChunk; |
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1867 *class_chunk_word_size = ClassSpecializedChunk; |
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1868 break; |
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1869 default: |
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1870 *chunk_word_size = SmallChunk; |
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1871 *class_chunk_word_size = ClassSmallChunk; |
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1872 break; |
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1873 } |
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1874 assert(*chunk_word_size != 0 && *class_chunk_word_size != 0, |
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1875 err_msg("Initial chunks sizes bad: data " SIZE_FORMAT |
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1876 " class " SIZE_FORMAT, |
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1877 *chunk_word_size, *class_chunk_word_size)); |
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1878 } |
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1879 |
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1880 size_t SpaceManager::sum_free_in_chunks_in_use() const { |
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1881 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1882 size_t free = 0; |
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1883 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1884 Metachunk* chunk = chunks_in_use(i); |
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1885 while (chunk != NULL) { |
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1886 free += chunk->free_word_size(); |
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1887 chunk = chunk->next(); |
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1888 } |
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1889 } |
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1890 return free; |
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1891 } |
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1892 |
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1893 size_t SpaceManager::sum_waste_in_chunks_in_use() const { |
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1894 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1895 size_t result = 0; |
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1896 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1897 result += sum_waste_in_chunks_in_use(i); |
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1898 } |
6885 | 1899 |
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1900 return result; |
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1901 } |
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1902 |
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1903 size_t SpaceManager::sum_waste_in_chunks_in_use(ChunkIndex index) const { |
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1904 size_t result = 0; |
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1905 Metachunk* chunk = chunks_in_use(index); |
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1906 // Count the free space in all the chunk but not the |
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1907 // current chunk from which allocations are still being done. |
11064
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1908 while (chunk != NULL) { |
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1909 if (chunk != current_chunk()) { |
6885 | 1910 result += chunk->free_word_size(); |
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1911 } |
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1912 chunk = chunk->next(); |
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1913 } |
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1914 return result; |
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1915 } |
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1916 |
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1917 size_t SpaceManager::sum_capacity_in_chunks_in_use() const { |
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1918 // For CMS use "allocated_chunks_words()" which does not need the |
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1919 // Metaspace lock. For the other collectors sum over the |
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1920 // lists. Use both methods as a check that "allocated_chunks_words()" |
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1921 // is correct. That is, sum_capacity_in_chunks() is too expensive |
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1922 // to use in the product and allocated_chunks_words() should be used |
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1923 // but allow for checking that allocated_chunks_words() returns the same |
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1924 // value as sum_capacity_in_chunks_in_use() which is the definitive |
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1925 // answer. |
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1926 if (UseConcMarkSweepGC) { |
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1927 return allocated_chunks_words(); |
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1928 } else { |
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1929 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1930 size_t sum = 0; |
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1931 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1932 Metachunk* chunk = chunks_in_use(i); |
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1933 while (chunk != NULL) { |
12902 | 1934 sum += chunk->word_size(); |
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1935 chunk = chunk->next(); |
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1936 } |
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1937 } |
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1938 return sum; |
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1939 } |
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1940 } |
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1941 |
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1942 size_t SpaceManager::sum_count_in_chunks_in_use() { |
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1943 size_t count = 0; |
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1944 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1945 count = count + sum_count_in_chunks_in_use(i); |
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1946 } |
6885 | 1947 |
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1948 return count; |
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1949 } |
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1950 |
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1951 size_t SpaceManager::sum_count_in_chunks_in_use(ChunkIndex i) { |
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1952 size_t count = 0; |
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1953 Metachunk* chunk = chunks_in_use(i); |
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1954 while (chunk != NULL) { |
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1955 count++; |
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1956 chunk = chunk->next(); |
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1957 } |
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1958 return count; |
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1959 } |
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1960 |
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1961 |
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1962 size_t SpaceManager::sum_used_in_chunks_in_use() const { |
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1963 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1964 size_t used = 0; |
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1965 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1966 Metachunk* chunk = chunks_in_use(i); |
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1967 while (chunk != NULL) { |
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1968 used += chunk->used_word_size(); |
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1969 chunk = chunk->next(); |
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1970 } |
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1971 } |
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1972 return used; |
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1973 } |
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1974 |
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1975 void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const { |
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1976 |
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1977 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1978 Metachunk* chunk = chunks_in_use(i); |
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1979 st->print("SpaceManager: %s " PTR_FORMAT, |
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1980 chunk_size_name(i), chunk); |
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1981 if (chunk != NULL) { |
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1982 st->print_cr(" free " SIZE_FORMAT, |
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1983 chunk->free_word_size()); |
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1984 } else { |
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1985 st->cr(); |
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1986 } |
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1987 } |
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1988 |
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1989 chunk_manager()->locked_print_free_chunks(st); |
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1990 chunk_manager()->locked_print_sum_free_chunks(st); |
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1991 } |
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1992 |
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1993 size_t SpaceManager::calc_chunk_size(size_t word_size) { |
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1994 |
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1995 // Decide between a small chunk and a medium chunk. Up to |
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1996 // _small_chunk_limit small chunks can be allocated but |
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1997 // once a medium chunk has been allocated, no more small |
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1998 // chunks will be allocated. |
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1999 size_t chunk_word_size; |
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2000 if (chunks_in_use(MediumIndex) == NULL && |
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2001 sum_count_in_chunks_in_use(SmallIndex) < _small_chunk_limit) { |
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2002 chunk_word_size = (size_t) small_chunk_size(); |
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2003 if (word_size + Metachunk::overhead() > small_chunk_size()) { |
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2004 chunk_word_size = medium_chunk_size(); |
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2005 } |
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2006 } else { |
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2007 chunk_word_size = medium_chunk_size(); |
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2008 } |
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2009 |
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2010 // Might still need a humongous chunk. Enforce |
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2011 // humongous allocations sizes to be aligned up to |
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2012 // the smallest chunk size. |
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2013 size_t if_humongous_sized_chunk = |
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2014 align_size_up(word_size + Metachunk::overhead(), |
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2015 smallest_chunk_size()); |
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2016 chunk_word_size = |
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2017 MAX2((size_t) chunk_word_size, if_humongous_sized_chunk); |
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2018 |
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2019 assert(!SpaceManager::is_humongous(word_size) || |
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2020 chunk_word_size == if_humongous_sized_chunk, |
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2021 err_msg("Size calculation is wrong, word_size " SIZE_FORMAT |
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2022 " chunk_word_size " SIZE_FORMAT, |
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2023 word_size, chunk_word_size)); |
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2024 if (TraceMetadataHumongousAllocation && |
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2025 SpaceManager::is_humongous(word_size)) { |
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2026 gclog_or_tty->print_cr("Metadata humongous allocation:"); |
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2027 gclog_or_tty->print_cr(" word_size " PTR_FORMAT, word_size); |
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2028 gclog_or_tty->print_cr(" chunk_word_size " PTR_FORMAT, |
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2029 chunk_word_size); |
6885 | 2030 gclog_or_tty->print_cr(" chunk overhead " PTR_FORMAT, |
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2031 Metachunk::overhead()); |
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2032 } |
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2033 return chunk_word_size; |
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2034 } |
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2035 |
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2036 void SpaceManager::track_metaspace_memory_usage() { |
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2037 if (is_init_completed()) { |
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2038 if (is_class()) { |
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2039 MemoryService::track_compressed_class_memory_usage(); |
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2040 } |
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2041 MemoryService::track_metaspace_memory_usage(); |
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2042 } |
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2043 } |
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2044 |
6885 | 2045 MetaWord* SpaceManager::grow_and_allocate(size_t word_size) { |
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2046 assert(vs_list()->current_virtual_space() != NULL, |
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2047 "Should have been set"); |
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2048 assert(current_chunk() == NULL || |
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2049 current_chunk()->allocate(word_size) == NULL, |
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2050 "Don't need to expand"); |
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2051 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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2052 |
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2053 if (TraceMetadataChunkAllocation && Verbose) { |
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2054 size_t words_left = 0; |
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2055 size_t words_used = 0; |
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2056 if (current_chunk() != NULL) { |
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2057 words_left = current_chunk()->free_word_size(); |
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2058 words_used = current_chunk()->used_word_size(); |
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2059 } |
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2060 gclog_or_tty->print_cr("SpaceManager::grow_and_allocate for " SIZE_FORMAT |
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2061 " words " SIZE_FORMAT " words used " SIZE_FORMAT |
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2062 " words left", |
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2063 word_size, words_used, words_left); |
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2064 } |
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2065 |
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2066 // Get another chunk out of the virtual space |
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2067 size_t grow_chunks_by_words = calc_chunk_size(word_size); |
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2068 Metachunk* next = get_new_chunk(word_size, grow_chunks_by_words); |
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2069 |
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|
2070 MetaWord* mem = NULL; |
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2071 |
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2072 // If a chunk was available, add it to the in-use chunk list |
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2073 // and do an allocation from it. |
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2074 if (next != NULL) { |
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2075 // Add to this manager's list of chunks in use. |
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2076 add_chunk(next, false); |
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2077 mem = next->allocate(word_size); |
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2078 } |
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2079 |
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2080 // Track metaspace memory usage statistic. |
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2081 track_metaspace_memory_usage(); |
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2082 |
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2083 return mem; |
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2084 } |
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2085 |
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2086 void SpaceManager::print_on(outputStream* st) const { |
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2087 |
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2088 for (ChunkIndex i = ZeroIndex; |
6885 | 2089 i < NumberOfInUseLists ; |
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2090 i = next_chunk_index(i) ) { |
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2091 st->print_cr(" chunks_in_use " PTR_FORMAT " chunk size " PTR_FORMAT, |
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2092 chunks_in_use(i), |
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2093 chunks_in_use(i) == NULL ? 0 : chunks_in_use(i)->word_size()); |
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2094 } |
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2095 st->print_cr(" waste: Small " SIZE_FORMAT " Medium " SIZE_FORMAT |
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2096 " Humongous " SIZE_FORMAT, |
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2097 sum_waste_in_chunks_in_use(SmallIndex), |
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2098 sum_waste_in_chunks_in_use(MediumIndex), |
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2099 sum_waste_in_chunks_in_use(HumongousIndex)); |
6885 | 2100 // block free lists |
2101 if (block_freelists() != NULL) { | |
2102 st->print_cr("total in block free lists " SIZE_FORMAT, | |
2103 block_freelists()->total_size()); | |
2104 } | |
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2105 } |
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2106 |
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2107 SpaceManager::SpaceManager(Metaspace::MetadataType mdtype, |
12303
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2108 Mutex* lock) : |
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2109 _mdtype(mdtype), |
10183
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2110 _allocated_blocks_words(0), |
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2111 _allocated_chunks_words(0), |
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2112 _allocated_chunks_count(0), |
7446
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2113 _lock(lock) |
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2114 { |
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|
2115 initialize(); |
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2116 } |
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2117 |
10183
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2118 void SpaceManager::inc_size_metrics(size_t words) { |
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2119 assert_lock_strong(SpaceManager::expand_lock()); |
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2120 // Total of allocated Metachunks and allocated Metachunks count |
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2121 // for each SpaceManager |
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2122 _allocated_chunks_words = _allocated_chunks_words + words; |
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2123 _allocated_chunks_count++; |
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2124 // Global total of capacity in allocated Metachunks |
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2125 MetaspaceAux::inc_capacity(mdtype(), words); |
10183
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2126 // Global total of allocated Metablocks. |
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2127 // used_words_slow() includes the overhead in each |
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2128 // Metachunk so include it in the used when the |
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2129 // Metachunk is first added (so only added once per |
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2130 // Metachunk). |
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2131 MetaspaceAux::inc_used(mdtype(), Metachunk::overhead()); |
10183
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|
2132 } |
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|
2133 |
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|
2134 void SpaceManager::inc_used_metrics(size_t words) { |
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|
2135 // Add to the per SpaceManager total |
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|
2136 Atomic::add_ptr(words, &_allocated_blocks_words); |
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|
2137 // Add to the global total |
10330
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|
2138 MetaspaceAux::inc_used(mdtype(), words); |
10183
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|
2139 } |
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|
2140 |
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|
2141 void SpaceManager::dec_total_from_size_metrics() { |
10330
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|
2142 MetaspaceAux::dec_capacity(mdtype(), allocated_chunks_words()); |
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|
2143 MetaspaceAux::dec_used(mdtype(), allocated_blocks_words()); |
10183
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2144 // Also deduct the overhead per Metachunk |
10330
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|
2145 MetaspaceAux::dec_used(mdtype(), allocated_chunks_count() * Metachunk::overhead()); |
10183
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|
2146 } |
868d87ed63c8
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|
2147 |
7446
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|
2148 void SpaceManager::initialize() { |
6725
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|
2149 Metadebug::init_allocation_fail_alot_count(); |
7446
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|
2150 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
6725
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|
2151 _chunks_in_use[i] = NULL; |
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|
2152 } |
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|
2153 _current_chunk = NULL; |
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|
2154 if (TraceMetadataChunkAllocation && Verbose) { |
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|
2155 gclog_or_tty->print_cr("SpaceManager(): " PTR_FORMAT, this); |
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|
2156 } |
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|
2157 } |
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|
2158 |
10101
df254344edf1
8011173: NPG: Replace the ChunkList implementation with class FreeList<Metachunk>
jmasa
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8813
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|
2159 void ChunkManager::return_chunks(ChunkIndex index, Metachunk* chunks) { |
df254344edf1
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jmasa
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|
2160 if (chunks == NULL) { |
df254344edf1
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|
2161 return; |
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8813
diff
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|
2162 } |
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|
2163 ChunkList* list = free_chunks(index); |
df254344edf1
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|
2164 assert(list->size() == chunks->word_size(), "Mismatch in chunk sizes"); |
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|
2165 assert_lock_strong(SpaceManager::expand_lock()); |
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|
2166 Metachunk* cur = chunks; |
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|
2167 |
10175 | 2168 // This returns chunks one at a time. If a new |
10101
df254344edf1
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|
2169 // class List can be created that is a base class |
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|
2170 // of FreeList then something like FreeList::prepend() |
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|
2171 // can be used in place of this loop |
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|
2172 while (cur != NULL) { |
10175 | 2173 assert(cur->container() != NULL, "Container should have been set"); |
2174 cur->container()->dec_container_count(); | |
10101
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|
2175 // Capture the next link before it is changed |
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2176 // by the call to return_chunk_at_head(); |
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|
2177 Metachunk* next = cur->next(); |
12902 | 2178 DEBUG_ONLY(cur->set_is_tagged_free(true);) |
10101
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|
2179 list->return_chunk_at_head(cur); |
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|
2180 cur = next; |
df254344edf1
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8813
diff
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|
2181 } |
df254344edf1
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8813
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|
2182 } |
df254344edf1
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|
2183 |
6725
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|
2184 SpaceManager::~SpaceManager() { |
8784
79af1312fc2c
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|
2185 // This call this->_lock which can't be done while holding expand_lock() |
10183
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|
2186 assert(sum_capacity_in_chunks_in_use() == allocated_chunks_words(), |
868d87ed63c8
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|
2187 err_msg("sum_capacity_in_chunks_in_use() " SIZE_FORMAT |
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|
2188 " allocated_chunks_words() " SIZE_FORMAT, |
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|
2189 sum_capacity_in_chunks_in_use(), allocated_chunks_words())); |
8784
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|
2190 |
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|
2191 MutexLockerEx fcl(SpaceManager::expand_lock(), |
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|
2192 Mutex::_no_safepoint_check_flag); |
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|
2193 |
12303
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|
2194 chunk_manager()->slow_locked_verify(); |
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|
2195 |
10183
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|
2196 dec_total_from_size_metrics(); |
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|
2197 |
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2198 if (TraceMetadataChunkAllocation && Verbose) { |
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2199 gclog_or_tty->print_cr("~SpaceManager(): " PTR_FORMAT, this); |
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2200 locked_print_chunks_in_use_on(gclog_or_tty); |
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2201 } |
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2202 |
10175 | 2203 // Do not mangle freed Metachunks. The chunk size inside Metachunks |
2204 // is during the freeing of a VirtualSpaceNodes. | |
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2205 |
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2206 // Have to update before the chunks_in_use lists are emptied |
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2207 // below. |
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2208 chunk_manager()->inc_free_chunks_total(allocated_chunks_words(), |
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2209 sum_count_in_chunks_in_use()); |
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2210 |
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2211 // Add all the chunks in use by this space manager |
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2212 // to the global list of free chunks. |
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2213 |
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2214 // Follow each list of chunks-in-use and add them to the |
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2215 // free lists. Each list is NULL terminated. |
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2216 |
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2217 for (ChunkIndex i = ZeroIndex; i < HumongousIndex; i = next_chunk_index(i)) { |
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2218 if (TraceMetadataChunkAllocation && Verbose) { |
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2219 gclog_or_tty->print_cr("returned %d %s chunks to freelist", |
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2220 sum_count_in_chunks_in_use(i), |
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2221 chunk_size_name(i)); |
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2222 } |
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2223 Metachunk* chunks = chunks_in_use(i); |
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2224 chunk_manager()->return_chunks(i, chunks); |
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2225 set_chunks_in_use(i, NULL); |
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2226 if (TraceMetadataChunkAllocation && Verbose) { |
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2227 gclog_or_tty->print_cr("updated freelist count %d %s", |
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2228 chunk_manager()->free_chunks(i)->count(), |
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2229 chunk_size_name(i)); |
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2230 } |
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2231 assert(i != HumongousIndex, "Humongous chunks are handled explicitly later"); |
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2232 } |
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2233 |
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2234 // The medium chunk case may be optimized by passing the head and |
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2235 // tail of the medium chunk list to add_at_head(). The tail is often |
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2236 // the current chunk but there are probably exceptions. |
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2237 |
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2238 // Humongous chunks |
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2239 if (TraceMetadataChunkAllocation && Verbose) { |
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2240 gclog_or_tty->print_cr("returned %d %s humongous chunks to dictionary", |
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2241 sum_count_in_chunks_in_use(HumongousIndex), |
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2242 chunk_size_name(HumongousIndex)); |
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2243 gclog_or_tty->print("Humongous chunk dictionary: "); |
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2244 } |
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2245 // Humongous chunks are never the current chunk. |
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2246 Metachunk* humongous_chunks = chunks_in_use(HumongousIndex); |
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2247 |
6885 | 2248 while (humongous_chunks != NULL) { |
2249 #ifdef ASSERT | |
12902 | 2250 humongous_chunks->set_is_tagged_free(true); |
6885 | 2251 #endif |
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2252 if (TraceMetadataChunkAllocation && Verbose) { |
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2253 gclog_or_tty->print(PTR_FORMAT " (" SIZE_FORMAT ") ", |
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2254 humongous_chunks, |
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2255 humongous_chunks->word_size()); |
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2256 } |
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2257 assert(humongous_chunks->word_size() == (size_t) |
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2258 align_size_up(humongous_chunks->word_size(), |
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2259 smallest_chunk_size()), |
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2260 err_msg("Humongous chunk size is wrong: word size " SIZE_FORMAT |
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2261 " granularity %d", |
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2262 humongous_chunks->word_size(), smallest_chunk_size())); |
6885 | 2263 Metachunk* next_humongous_chunks = humongous_chunks->next(); |
10175 | 2264 humongous_chunks->container()->dec_container_count(); |
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2265 chunk_manager()->humongous_dictionary()->return_chunk(humongous_chunks); |
6885 | 2266 humongous_chunks = next_humongous_chunks; |
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2267 } |
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2268 if (TraceMetadataChunkAllocation && Verbose) { |
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2269 gclog_or_tty->cr(); |
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2270 gclog_or_tty->print_cr("updated dictionary count %d %s", |
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2271 chunk_manager()->humongous_dictionary()->total_count(), |
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2272 chunk_size_name(HumongousIndex)); |
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2273 } |
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2274 chunk_manager()->slow_locked_verify(); |
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2275 } |
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2276 |
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2277 const char* SpaceManager::chunk_size_name(ChunkIndex index) const { |
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2278 switch (index) { |
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2279 case SpecializedIndex: |
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2280 return "Specialized"; |
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2281 case SmallIndex: |
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2282 return "Small"; |
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2283 case MediumIndex: |
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2284 return "Medium"; |
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2285 case HumongousIndex: |
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2286 return "Humongous"; |
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2287 default: |
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2288 return NULL; |
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2289 } |
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2290 } |
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2291 |
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2292 ChunkIndex ChunkManager::list_index(size_t size) { |
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2293 switch (size) { |
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2294 case SpecializedChunk: |
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2295 assert(SpecializedChunk == ClassSpecializedChunk, |
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2296 "Need branch for ClassSpecializedChunk"); |
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2297 return SpecializedIndex; |
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2298 case SmallChunk: |
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2299 case ClassSmallChunk: |
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2300 return SmallIndex; |
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2301 case MediumChunk: |
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2302 case ClassMediumChunk: |
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2303 return MediumIndex; |
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2304 default: |
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2305 assert(size > MediumChunk || size > ClassMediumChunk, |
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2306 "Not a humongous chunk"); |
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2307 return HumongousIndex; |
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2308 } |
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2309 } |
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2310 |
6885 | 2311 void SpaceManager::deallocate(MetaWord* p, size_t word_size) { |
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2312 assert_lock_strong(_lock); |
11966 | 2313 size_t raw_word_size = get_raw_word_size(word_size); |
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2314 size_t min_size = TreeChunk<Metablock, FreeList<Metablock> >::min_size(); |
11966 | 2315 assert(raw_word_size >= min_size, |
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2316 err_msg("Should not deallocate dark matter " SIZE_FORMAT "<" SIZE_FORMAT, word_size, min_size)); |
11966 | 2317 block_freelists()->return_block(p, raw_word_size); |
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2318 } |
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2319 |
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2320 // Adds a chunk to the list of chunks in use. |
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2321 void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) { |
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2322 |
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2323 assert(new_chunk != NULL, "Should not be NULL"); |
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2324 assert(new_chunk->next() == NULL, "Should not be on a list"); |
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2325 |
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2326 new_chunk->reset_empty(); |
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2327 |
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coleenp
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diff
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|
2328 // Find the correct list and and set the current |
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parents:
diff
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|
2329 // chunk for that list. |
7446
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|
2330 ChunkIndex index = ChunkManager::list_index(new_chunk->word_size()); |
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|
2331 |
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diff
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|
2332 if (index != HumongousIndex) { |
12231
24e87613ee58
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|
2333 retire_current_chunk(); |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2334 set_current_chunk(new_chunk); |
7446
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|
2335 new_chunk->set_next(chunks_in_use(index)); |
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|
2336 set_chunks_in_use(index, new_chunk); |
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|
2337 } else { |
6725
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|
2338 // For null class loader data and DumpSharedSpaces, the first chunk isn't |
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parents:
diff
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|
2339 // small, so small will be null. Link this first chunk as the current |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2340 // chunk. |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2341 if (make_current) { |
da91efe96a93
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diff
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|
2342 // Set as the current chunk but otherwise treat as a humongous chunk. |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2343 set_current_chunk(new_chunk); |
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parents:
diff
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|
2344 } |
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diff
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|
2345 // Link at head. The _current_chunk only points to a humongous chunk for |
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parents:
diff
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|
2346 // the null class loader metaspace (class and data virtual space managers) |
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parents:
diff
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|
2347 // any humongous chunks so will not point to the tail |
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parents:
diff
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|
2348 // of the humongous chunks list. |
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diff
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|
2349 new_chunk->set_next(chunks_in_use(HumongousIndex)); |
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diff
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|
2350 set_chunks_in_use(HumongousIndex, new_chunk); |
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diff
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|
2351 |
7447
1de1b145f6bc
8005486: NPG: Incorrect assertion in ChunkManager::list_index()
jmasa
parents:
7446
diff
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|
2352 assert(new_chunk->word_size() > medium_chunk_size(), "List inconsistency"); |
6725
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diff
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|
2353 } |
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diff
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|
2354 |
10183
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|
2355 // Add to the running sum of capacity |
868d87ed63c8
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|
2356 inc_size_metrics(new_chunk->word_size()); |
868d87ed63c8
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10175
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|
2357 |
6725
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diff
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|
2358 assert(new_chunk->is_empty(), "Not ready for reuse"); |
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|
2359 if (TraceMetadataChunkAllocation && Verbose) { |
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diff
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|
2360 gclog_or_tty->print("SpaceManager::add_chunk: %d) ", |
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parents:
diff
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|
2361 sum_count_in_chunks_in_use()); |
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diff
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|
2362 new_chunk->print_on(gclog_or_tty); |
12303
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8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
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|
2363 chunk_manager()->locked_print_free_chunks(gclog_or_tty); |
6725
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diff
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|
2364 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2365 } |
da91efe96a93
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diff
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|
2366 |
12231
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|
2367 void SpaceManager::retire_current_chunk() { |
24e87613ee58
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|
2368 if (current_chunk() != NULL) { |
24e87613ee58
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|
2369 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
|
2370 if (remaining_words >= TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
12231
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|
2371 block_freelists()->return_block(current_chunk()->allocate(remaining_words), remaining_words); |
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|
2372 inc_used_metrics(remaining_words); |
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parents:
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diff
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|
2373 } |
24e87613ee58
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parents:
12226
diff
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|
2374 } |
24e87613ee58
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parents:
12226
diff
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|
2375 } |
24e87613ee58
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12226
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|
2376 |
7446
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|
2377 Metachunk* SpaceManager::get_new_chunk(size_t word_size, |
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parents:
7435
diff
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|
2378 size_t grow_chunks_by_words) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2379 // Get a chunk from the chunk freelist |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
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|
2380 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
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|
2381 |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
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|
2382 if (next == NULL) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2383 next = vs_list()->get_new_chunk(word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
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|
2384 grow_chunks_by_words, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2385 medium_chunk_bunch()); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
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|
2386 } |
7446
e51c9860cf66
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|
2387 |
12239 | 2388 if (TraceMetadataHumongousAllocation && next != NULL && |
7446
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jmasa
parents:
7435
diff
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|
2389 SpaceManager::is_humongous(next->word_size())) { |
12239 | 2390 gclog_or_tty->print_cr(" new humongous chunk word size " |
2391 PTR_FORMAT, next->word_size()); | |
7446
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jmasa
parents:
7435
diff
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|
2392 } |
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2393 |
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2394 return next; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
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|
2395 } |
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2396 |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2397 MetaWord* SpaceManager::allocate(size_t word_size) { |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2398 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2399 |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
2400 size_t raw_word_size = get_raw_word_size(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2401 BlockFreelist* fl = block_freelists(); |
6885 | 2402 MetaWord* p = NULL; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2403 // Allocation from the dictionary is expensive in the sense that |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2404 // the dictionary has to be searched for a size. Don't allocate |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2405 // 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
|
2406 // a reasonable policy? Maybe an skinny dictionary is fast enough |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2407 // for allocations. Do some profiling. JJJ |
6885 | 2408 if (fl->total_size() > allocation_from_dictionary_limit) { |
2409 p = fl->get_block(raw_word_size); | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2410 } |
6885 | 2411 if (p == NULL) { |
2412 p = allocate_work(raw_word_size); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2413 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2414 |
6885 | 2415 return p; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2416 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2417 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2418 // Returns the address of spaced allocated for "word_size". |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2419 // This methods does not know about blocks (Metablocks) |
6885 | 2420 MetaWord* SpaceManager::allocate_work(size_t word_size) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2421 assert_lock_strong(_lock); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2422 #ifdef ASSERT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2423 if (Metadebug::test_metadata_failure()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2424 return NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2425 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2426 #endif |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2427 // Is there space in the current chunk? |
6885 | 2428 MetaWord* result = NULL; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2429 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2430 // For DumpSharedSpaces, only allocate out of the current chunk which is |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2431 // never null because we gave it the size we wanted. Caller reports out |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2432 // of memory if this returns null. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2433 if (DumpSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2434 assert(current_chunk() != NULL, "should never happen"); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2435 inc_used_metrics(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2436 return current_chunk()->allocate(word_size); // caller handles null result |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2437 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2438 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2439 if (current_chunk() != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2440 result = current_chunk()->allocate(word_size); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2441 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2442 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2443 if (result == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2444 result = grow_and_allocate(word_size); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2445 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2446 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2447 if (result != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2448 inc_used_metrics(word_size); |
6885 | 2449 assert(result != (MetaWord*) chunks_in_use(MediumIndex), |
2450 "Head of the list is being allocated"); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2451 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2452 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2453 return result; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2454 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2455 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2456 void SpaceManager::verify() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2457 // If there are blocks in the dictionary, then |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2458 // verfication of chunks does not work since |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2459 // being in the dictionary alters a chunk. |
6885 | 2460 if (block_freelists()->total_size() == 0) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2461 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
6725
da91efe96a93
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coleenp
parents:
diff
changeset
|
2462 Metachunk* curr = chunks_in_use(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2463 while (curr != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2464 curr->verify(); |
7208
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jmasa
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|
2465 verify_chunk_size(curr); |
6725
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|
2466 curr = curr->next(); |
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|
2467 } |
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diff
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|
2468 } |
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diff
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|
2469 } |
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diff
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|
2470 } |
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diff
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|
2471 |
7208
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jmasa
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|
2472 void SpaceManager::verify_chunk_size(Metachunk* chunk) { |
eade6b2e4782
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|
2473 assert(is_humongous(chunk->word_size()) || |
7446
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jmasa
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diff
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|
2474 chunk->word_size() == medium_chunk_size() || |
e51c9860cf66
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diff
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|
2475 chunk->word_size() == small_chunk_size() || |
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2476 chunk->word_size() == specialized_chunk_size(), |
7208
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jmasa
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7187
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|
2477 "Chunk size is wrong"); |
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7187
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|
2478 return; |
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7187
diff
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|
2479 } |
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|
2480 |
6725
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diff
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|
2481 #ifdef ASSERT |
10183
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jmasa
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|
2482 void SpaceManager::verify_allocated_blocks_words() { |
6725
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diff
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|
2483 // Verification is only guaranteed at a safepoint. |
10183
868d87ed63c8
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|
2484 assert(SafepointSynchronize::is_at_safepoint() || !Universe::is_fully_initialized(), |
868d87ed63c8
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|
2485 "Verification can fail if the applications is running"); |
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10175
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|
2486 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
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|
2487 err_msg("allocation total is not consistent " SIZE_FORMAT |
d9058e388631
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mikael
parents:
7447
diff
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|
2488 " vs " SIZE_FORMAT, |
10183
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|
2489 allocated_blocks_words(), sum_used_in_chunks_in_use())); |
6725
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diff
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|
2490 } |
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diff
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|
2491 |
da91efe96a93
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parents:
diff
changeset
|
2492 #endif |
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diff
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|
2493 |
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diff
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|
2494 void SpaceManager::dump(outputStream* const out) const { |
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coleenp
parents:
diff
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|
2495 size_t curr_total = 0; |
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diff
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|
2496 size_t waste = 0; |
da91efe96a93
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parents:
diff
changeset
|
2497 uint i = 0; |
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coleenp
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diff
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|
2498 size_t used = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2499 size_t capacity = 0; |
da91efe96a93
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diff
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|
2500 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2501 // Add up statistics for all chunks in this SpaceManager. |
7446
e51c9860cf66
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diff
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|
2502 for (ChunkIndex index = ZeroIndex; |
6885 | 2503 index < NumberOfInUseLists; |
6725
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diff
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|
2504 index = next_chunk_index(index)) { |
da91efe96a93
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diff
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|
2505 for (Metachunk* curr = chunks_in_use(index); |
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parents:
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|
2506 curr != NULL; |
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diff
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|
2507 curr = curr->next()) { |
da91efe96a93
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coleenp
parents:
diff
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|
2508 out->print("%d) ", i++); |
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coleenp
parents:
diff
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|
2509 curr->print_on(out); |
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parents:
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|
2510 curr_total += curr->word_size(); |
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diff
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|
2511 used += curr->used_word_size(); |
12902 | 2512 capacity += curr->word_size(); |
6725
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diff
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|
2513 waste += curr->free_word_size() + curr->overhead();; |
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diff
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|
2514 } |
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diff
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|
2515 } |
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parents:
diff
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|
2516 |
12239 | 2517 if (TraceMetadataChunkAllocation && Verbose) { |
2518 block_freelists()->print_on(out); | |
2519 } | |
2520 | |
7446
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|
2521 size_t free = current_chunk() == NULL ? 0 : current_chunk()->free_word_size(); |
6725
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parents:
diff
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|
2522 // Free space isn't wasted. |
da91efe96a93
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diff
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|
2523 waste -= free; |
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diff
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|
2524 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2525 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
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|
2526 " free " SIZE_FORMAT " capacity " SIZE_FORMAT |
da91efe96a93
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coleenp
parents:
diff
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|
2527 " 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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|
2528 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2529 |
7185
90273fc0a981
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coleenp
parents:
6969
diff
changeset
|
2530 #ifndef PRODUCT |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2531 void SpaceManager::mangle_freed_chunks() { |
7446
e51c9860cf66
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jmasa
parents:
7435
diff
changeset
|
2532 for (ChunkIndex index = ZeroIndex; |
6885 | 2533 index < NumberOfInUseLists; |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2534 index = next_chunk_index(index)) { |
da91efe96a93
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coleenp
parents:
diff
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|
2535 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2536 curr != NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2537 curr = curr->next()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2538 curr->mangle(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2539 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2540 } |
da91efe96a93
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coleenp
parents:
diff
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|
2541 } |
7185
90273fc0a981
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coleenp
parents:
6969
diff
changeset
|
2542 #endif // PRODUCT |
6725
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coleenp
parents:
diff
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|
2543 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2544 // MetaspaceAux |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2545 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
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|
2546 |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2547 size_t MetaspaceAux::_capacity_words[] = {0, 0}; |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
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parents:
17771
diff
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|
2548 size_t MetaspaceAux::_used_words[] = {0, 0}; |
10183
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jmasa
parents:
10175
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|
2549 |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2550 size_t MetaspaceAux::free_bytes(Metaspace::MetadataType mdtype) { |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2551 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2552 return list == NULL ? 0 : list->free_bytes(); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2553 } |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2554 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2555 size_t MetaspaceAux::free_bytes() { |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2556 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
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|
2557 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2558 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2559 void MetaspaceAux::dec_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2560 assert_lock_strong(SpaceManager::expand_lock()); |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
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17771
diff
changeset
|
2561 assert(words <= capacity_words(mdtype), |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2562 err_msg("About to decrement below 0: words " SIZE_FORMAT |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
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17771
diff
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|
2563 " is greater than _capacity_words[%u] " SIZE_FORMAT, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
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17771
diff
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|
2564 words, mdtype, capacity_words(mdtype))); |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
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diff
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|
2565 _capacity_words[mdtype] -= words; |
10183
868d87ed63c8
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10175
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|
2566 } |
868d87ed63c8
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10175
diff
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|
2567 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2568 void MetaspaceAux::inc_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
868d87ed63c8
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jmasa
parents:
10175
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|
2569 assert_lock_strong(SpaceManager::expand_lock()); |
868d87ed63c8
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jmasa
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10175
diff
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|
2570 // Needs to be atomic |
17866
270d7cb38f40
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|
2571 _capacity_words[mdtype] += words; |
10183
868d87ed63c8
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10175
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|
2572 } |
868d87ed63c8
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|
2573 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
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|
2574 void MetaspaceAux::dec_used(Metaspace::MetadataType mdtype, size_t words) { |
17866
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8038934: Remove prefix allocated_ from methods and variables in Metaspace
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17771
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|
2575 assert(words <= used_words(mdtype), |
10183
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10175
diff
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|
2576 err_msg("About to decrement below 0: words " SIZE_FORMAT |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
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17771
diff
changeset
|
2577 " is greater than _used_words[%u] " SIZE_FORMAT, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
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|
2578 words, mdtype, used_words(mdtype))); |
10183
868d87ed63c8
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jmasa
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10175
diff
changeset
|
2579 // For CMS deallocation of the Metaspaces occurs during the |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
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10175
diff
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|
2580 // sweep which is a concurrent phase. Protection by the expand_lock() |
868d87ed63c8
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10175
diff
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|
2581 // is not enough since allocation is on a per Metaspace basis |
868d87ed63c8
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10175
diff
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|
2582 // and protected by the Metaspace lock. |
868d87ed63c8
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10175
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|
2583 jlong minus_words = (jlong) - (jlong) words; |
17866
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17771
diff
changeset
|
2584 Atomic::add_ptr(minus_words, &_used_words[mdtype]); |
10183
868d87ed63c8
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jmasa
parents:
10175
diff
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|
2585 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
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10175
diff
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|
2586 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2587 void MetaspaceAux::inc_used(Metaspace::MetadataType mdtype, size_t words) { |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
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diff
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|
2588 // _used_words tracks allocations for |
10183
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2589 // each piece of metadata. Those allocations are |
868d87ed63c8
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jmasa
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10175
diff
changeset
|
2590 // generally done concurrently by different application |
868d87ed63c8
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jmasa
parents:
10175
diff
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|
2591 // threads so must be done atomically. |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
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diff
changeset
|
2592 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
|
2593 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2594 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2595 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
|
2596 size_t used = 0; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2597 ClassLoaderDataGraphMetaspaceIterator iter; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2598 while (iter.repeat()) { |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2599 Metaspace* msp = iter.get_next(); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2600 // Sum allocated_blocks_words for each metaspace |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2601 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2602 used += msp->used_words_slow(mdtype); |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2603 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2604 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2605 return used * BytesPerWord; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2606 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2607 |
12235 | 2608 size_t MetaspaceAux::free_bytes_slow(Metaspace::MetadataType mdtype) { |
6725
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2609 size_t free = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2610 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2611 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2612 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2613 if (msp != NULL) { |
12235 | 2614 free += msp->free_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2615 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2616 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2617 return free * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2618 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2619 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2620 size_t MetaspaceAux::capacity_bytes_slow(Metaspace::MetadataType mdtype) { |
12056
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8003424: Enable Class Data Sharing for CompressedOops
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changeset
|
2621 if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2622 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2623 } |
10183
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2624 // 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
|
2625 // added to the capacity calculation as needed. |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2626 size_t capacity = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2627 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2628 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2629 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2630 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2631 capacity += msp->capacity_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2632 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2633 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2634 return capacity * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2635 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2636 |
12235 | 2637 size_t MetaspaceAux::capacity_bytes_slow() { |
2638 #ifdef PRODUCT | |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2639 // Use capacity_bytes() in PRODUCT instead of this function. |
12235 | 2640 guarantee(false, "Should not call capacity_bytes_slow() in the PRODUCT"); |
2641 #endif | |
2642 size_t class_capacity = capacity_bytes_slow(Metaspace::ClassType); | |
2643 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
|
2644 assert(capacity_bytes() == class_capacity + non_class_capacity, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2645 err_msg("bad accounting: capacity_bytes() " SIZE_FORMAT |
12235 | 2646 " class_capacity + non_class_capacity " SIZE_FORMAT |
2647 " 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
|
2648 capacity_bytes(), class_capacity + non_class_capacity, |
12235 | 2649 class_capacity, non_class_capacity)); |
2650 | |
2651 return class_capacity + non_class_capacity; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2652 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2653 |
12235 | 2654 size_t MetaspaceAux::reserved_bytes(Metaspace::MetadataType mdtype) { |
2655 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
|
2656 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
|
2657 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2658 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2659 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
|
2660 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
|
2661 return list == NULL ? 0 : list->committed_bytes(); |
12235 | 2662 } |
2663 | |
2664 size_t MetaspaceAux::min_chunk_size_words() { return Metaspace::first_chunk_word_size(); } | |
2665 | |
2666 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
|
2667 ChunkManager* chunk_manager = Metaspace::get_chunk_manager(mdtype); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2668 if (chunk_manager == NULL) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2669 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2670 } |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2671 chunk_manager->slow_verify(); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2672 return chunk_manager->free_chunks_total_words(); |
6725
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::free_chunks_total_bytes(Metaspace::MetadataType mdtype) { |
2676 return free_chunks_total_words(mdtype) * BytesPerWord; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2677 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2678 |
12235 | 2679 size_t MetaspaceAux::free_chunks_total_words() { |
2680 return free_chunks_total_words(Metaspace::ClassType) + | |
2681 free_chunks_total_words(Metaspace::NonClassType); | |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2682 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2683 |
12235 | 2684 size_t MetaspaceAux::free_chunks_total_bytes() { |
2685 return free_chunks_total_words() * BytesPerWord; | |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2686 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2687 |
17771
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2688 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
|
2689 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
|
2690 } |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2691 |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2692 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
|
2693 if (!has_chunk_free_list(mdtype)) { |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2694 return MetaspaceChunkFreeListSummary(); |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2695 } |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2696 |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2697 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
|
2698 return cm->chunk_free_list_summary(); |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2699 } |
9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
ehelin
parents:
17770
diff
changeset
|
2700 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2701 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
|
2702 gclog_or_tty->print(", [Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2703 if (PrintGCDetails && Verbose) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2704 gclog_or_tty->print(" " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2705 "->" SIZE_FORMAT |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2706 "(" SIZE_FORMAT ")", |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2707 prev_metadata_used, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2708 used_bytes(), |
12235 | 2709 reserved_bytes()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2710 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2711 gclog_or_tty->print(" " SIZE_FORMAT "K" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2712 "->" SIZE_FORMAT "K" |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2713 "(" SIZE_FORMAT "K)", |
12235 | 2714 prev_metadata_used/K, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2715 used_bytes()/K, |
12235 | 2716 reserved_bytes()/K); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2717 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2718 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2719 gclog_or_tty->print("]"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2720 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2721 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2722 // This is printed when PrintGCDetails |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2723 void MetaspaceAux::print_on(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2724 Metaspace::MetadataType nct = Metaspace::NonClassType; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2725 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2726 out->print_cr(" Metaspace " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2727 "used " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2728 "capacity " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2729 "committed " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2730 "reserved " SIZE_FORMAT "K", |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2731 used_bytes()/K, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2732 capacity_bytes()/K, |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2733 committed_bytes()/K, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2734 reserved_bytes()/K); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2735 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2736 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2737 Metaspace::MetadataType ct = Metaspace::ClassType; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2738 out->print_cr(" class space " |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2739 "used " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2740 "capacity " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2741 "committed " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2742 "reserved " SIZE_FORMAT "K", |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2743 used_bytes(ct)/K, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2744 capacity_bytes(ct)/K, |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2745 committed_bytes(ct)/K, |
12235 | 2746 reserved_bytes(ct)/K); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2747 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2748 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2749 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2750 // Print information for class space and data space separately. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2751 // This is almost the same as above. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2752 void MetaspaceAux::print_on(outputStream* out, Metaspace::MetadataType mdtype) { |
12235 | 2753 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
|
2754 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
|
2755 size_t used_bytes = used_bytes_slow(mdtype); |
12235 | 2756 size_t free_bytes = free_bytes_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2757 size_t used_and_free = used_bytes + free_bytes + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2758 free_chunks_capacity_bytes; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2759 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
|
2760 "K + unused in chunks " SIZE_FORMAT "K + " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2761 " capacity in free chunks " SIZE_FORMAT "K = " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2762 "K capacity in allocated chunks " SIZE_FORMAT "K", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2763 used_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2764 free_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2765 free_chunks_capacity_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2766 used_and_free / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2767 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
|
2768 // 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
|
2769 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
|
2770 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2771 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2772 // Print total fragmentation for class metaspaces |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2773 void MetaspaceAux::print_class_waste(outputStream* out) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2774 assert(Metaspace::using_class_space(), "class metaspace not used"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2775 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
|
2776 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
|
2777 ClassLoaderDataGraphMetaspaceIterator iter; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2778 while (iter.repeat()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2779 Metaspace* msp = iter.get_next(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2780 if (msp != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2781 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
|
2782 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
|
2783 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
|
2784 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
|
2785 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
|
2786 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
|
2787 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
|
2788 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2789 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2790 out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2791 SIZE_FORMAT " small(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2792 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2793 "large count " SIZE_FORMAT, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2794 cls_specialized_count, cls_specialized_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2795 cls_small_count, cls_small_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2796 cls_medium_count, cls_medium_waste, cls_humongous_count); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2797 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2798 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2799 // 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
|
2800 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
|
2801 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
|
2802 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
|
2803 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2804 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2805 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2806 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2807 if (msp != NULL) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2808 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
|
2809 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
|
2810 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
|
2811 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
|
2812 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
|
2813 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
|
2814 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
|
2815 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2816 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2817 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
|
2818 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
|
2819 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
|
2820 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
|
2821 "large count " SIZE_FORMAT, |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2822 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
|
2823 small_waste, medium_count, medium_waste, humongous_count); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2824 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2825 print_class_waste(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2826 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2827 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2828 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2829 // Dump global metaspace things from the end of ClassLoaderDataGraph |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2830 void MetaspaceAux::dump(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2831 out->print_cr("All Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2832 out->print("data space: "); print_on(out, Metaspace::NonClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2833 out->print("class space: "); print_on(out, Metaspace::ClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2834 print_waste(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2835 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2836 |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2837 void MetaspaceAux::verify_free_chunks() { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2838 Metaspace::chunk_manager_metadata()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2839 if (Metaspace::using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2840 Metaspace::chunk_manager_class()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2841 } |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2842 } |
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2843 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2844 void MetaspaceAux::verify_capacity() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2845 #ifdef ASSERT |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2846 size_t running_sum_capacity_bytes = capacity_bytes(); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2847 // 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
|
2848 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
|
2849 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
|
2850 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
|
2851 " capacity_bytes_slow()" SIZE_FORMAT, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2852 running_sum_capacity_bytes, capacity_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2853 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2854 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2855 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2856 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
|
2857 assert(capacity_bytes(i) == capacity_in_use_bytes, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2858 err_msg("capacity_bytes(%u) " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2859 " capacity_bytes_slow(%u)" SIZE_FORMAT, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2860 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
|
2861 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2862 #endif |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2863 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2864 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2865 void MetaspaceAux::verify_used() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2866 #ifdef ASSERT |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2867 size_t running_sum_used_bytes = used_bytes(); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2868 // 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
|
2869 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
|
2870 assert(used_bytes() == used_in_use_bytes, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2871 err_msg("used_bytes() " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2872 " used_bytes_slow()" SIZE_FORMAT, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2873 used_bytes(), used_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2874 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2875 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2876 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2877 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
|
2878 assert(used_bytes(i) == used_in_use_bytes, |
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2879 err_msg("used_bytes(%u) " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2880 " used_bytes_slow(%u)" SIZE_FORMAT, |
17866
270d7cb38f40
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
17771
diff
changeset
|
2881 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
|
2882 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2883 #endif |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2884 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2885 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2886 void MetaspaceAux::verify_metrics() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2887 verify_capacity(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2888 verify_used(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2889 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2890 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2891 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2892 // Metaspace methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2893 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2894 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
|
2895 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
|
2896 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2897 size_t Metaspace::_commit_alignment = 0; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2898 size_t Metaspace::_reserve_alignment = 0; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2899 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2900 Metaspace::Metaspace(Mutex* lock, MetaspaceType type) { |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2901 initialize(lock, type); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2902 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2903 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2904 Metaspace::~Metaspace() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2905 delete _vsm; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2906 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2907 delete _class_vsm; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2908 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2909 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2910 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2911 VirtualSpaceList* Metaspace::_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2912 VirtualSpaceList* Metaspace::_class_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2913 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2914 ChunkManager* Metaspace::_chunk_manager_metadata = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2915 ChunkManager* Metaspace::_chunk_manager_class = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2916 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2917 #define VIRTUALSPACEMULTIPLIER 2 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2918 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2919 #ifdef _LP64 |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2920 static const uint64_t UnscaledClassSpaceMax = (uint64_t(max_juint) + 1); |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2921 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2922 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
|
2923 // 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
|
2924 // 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
|
2925 // (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
|
2926 // between the lower base and higher address. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2927 address lower_base; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2928 address higher_address; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2929 if (UseSharedSpaces) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2930 higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2931 (address)(metaspace_base + compressed_class_space_size())); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2932 lower_base = MIN2(metaspace_base, cds_base); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2933 } else { |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2934 higher_address = metaspace_base + compressed_class_space_size(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2935 lower_base = metaspace_base; |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2936 |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2937 uint64_t klass_encoding_max = UnscaledClassSpaceMax << LogKlassAlignmentInBytes; |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2938 // If compressed class space fits in lower 32G, we don't need a base. |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2939 if (higher_address <= (address)klass_encoding_max) { |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2940 lower_base = 0; // effectively lower base is zero. |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2941 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2942 } |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2943 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2944 Universe::set_narrow_klass_base(lower_base); |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2945 |
13037
c8fc12209830
8027616: Off by one error in putback for compressed oops nashorn performance improvement
coleenp
parents:
13001
diff
changeset
|
2946 if ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2947 Universe::set_narrow_klass_shift(0); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2948 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2949 assert(!UseSharedSpaces, "Cannot shift with UseSharedSpaces"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2950 Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2951 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2952 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2953 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2954 // Return TRUE if the specified metaspace_base and cds_base are close enough |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2955 // to work with compressed klass pointers. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2956 bool Metaspace::can_use_cds_with_metaspace_addr(char* metaspace_base, address cds_base) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2957 assert(cds_base != 0 && UseSharedSpaces, "Only use with CDS"); |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2958 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2959 address lower_base = MIN2((address)metaspace_base, cds_base); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2960 address higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2961 (address)(metaspace_base + compressed_class_space_size())); |
13037
c8fc12209830
8027616: Off by one error in putback for compressed oops nashorn performance improvement
coleenp
parents:
13001
diff
changeset
|
2962 return ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2963 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2964 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2965 // Try to allocate the metaspace at the requested addr. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2966 void Metaspace::allocate_metaspace_compressed_klass_ptrs(char* requested_addr, address cds_base) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2967 assert(using_class_space(), "called improperly"); |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2968 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2969 assert(compressed_class_space_size() < KlassEncodingMetaspaceMax, |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2970 "Metaspace size is too big"); |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2971 assert_is_ptr_aligned(requested_addr, _reserve_alignment); |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2972 assert_is_ptr_aligned(cds_base, _reserve_alignment); |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
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2973 assert_is_size_aligned(compressed_class_space_size(), _reserve_alignment); |
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2974 |
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2975 // Don't use large pages for the class space. |
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2976 bool large_pages = false; |
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2977 |
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2978 ReservedSpace metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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2979 _reserve_alignment, |
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2980 large_pages, |
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2981 requested_addr, 0); |
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2982 if (!metaspace_rs.is_reserved()) { |
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2983 if (UseSharedSpaces) { |
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2984 size_t increment = align_size_up(1*G, _reserve_alignment); |
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2985 |
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2986 // Keep trying to allocate the metaspace, increasing the requested_addr |
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2987 // by 1GB each time, until we reach an address that will no longer allow |
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2988 // use of CDS with compressed klass pointers. |
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2989 char *addr = requested_addr; |
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2990 while (!metaspace_rs.is_reserved() && (addr + increment > addr) && |
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2991 can_use_cds_with_metaspace_addr(addr + increment, cds_base)) { |
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2992 addr = addr + increment; |
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2993 metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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2994 _reserve_alignment, large_pages, addr, 0); |
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2995 } |
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2996 } |
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2997 |
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2998 // If no successful allocation then try to allocate the space anywhere. If |
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2999 // that fails then OOM doom. At this point we cannot try allocating the |
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3000 // metaspace as if UseCompressedClassPointers is off because too much |
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3001 // initialization has happened that depends on UseCompressedClassPointers. |
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3002 // So, UseCompressedClassPointers cannot be turned off at this point. |
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3003 if (!metaspace_rs.is_reserved()) { |
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3004 metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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3005 _reserve_alignment, large_pages); |
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3006 if (!metaspace_rs.is_reserved()) { |
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3007 vm_exit_during_initialization(err_msg("Could not allocate metaspace: %d bytes", |
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3008 compressed_class_space_size())); |
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3009 } |
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3010 } |
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3011 } |
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3012 |
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3013 // If we got here then the metaspace got allocated. |
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3014 MemTracker::record_virtual_memory_type((address)metaspace_rs.base(), mtClass); |
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3015 |
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3016 // Verify that we can use shared spaces. Otherwise, turn off CDS. |
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3017 if (UseSharedSpaces && !can_use_cds_with_metaspace_addr(metaspace_rs.base(), cds_base)) { |
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3018 FileMapInfo::stop_sharing_and_unmap( |
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3019 "Could not allocate metaspace at a compatible address"); |
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3020 } |
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3021 |
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3022 set_narrow_klass_base_and_shift((address)metaspace_rs.base(), |
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3023 UseSharedSpaces ? (address)cds_base : 0); |
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3024 |
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3025 initialize_class_space(metaspace_rs); |
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3026 |
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3027 if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) { |
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3028 gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: " SIZE_FORMAT, |
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3029 Universe::narrow_klass_base(), Universe::narrow_klass_shift()); |
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3030 gclog_or_tty->print_cr("Compressed class space size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT, |
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3031 compressed_class_space_size(), metaspace_rs.base(), requested_addr); |
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3032 } |
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3033 } |
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3034 |
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3035 // For UseCompressedClassPointers the class space is reserved above the top of |
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3036 // the Java heap. The argument passed in is at the base of the compressed space. |
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3037 void Metaspace::initialize_class_space(ReservedSpace rs) { |
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3038 // The reserved space size may be bigger because of alignment, esp with UseLargePages |
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3039 assert(rs.size() >= CompressedClassSpaceSize, |
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3040 err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize)); |
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3041 assert(using_class_space(), "Must be using class space"); |
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3042 _class_space_list = new VirtualSpaceList(rs); |
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3043 _chunk_manager_class = new ChunkManager(SpecializedChunk, ClassSmallChunk, ClassMediumChunk); |
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3044 |
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3045 if (!_class_space_list->initialization_succeeded()) { |
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3046 vm_exit_during_initialization("Failed to setup compressed class space virtual space list."); |
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3047 } |
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3048 } |
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3049 |
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|
3050 #endif |
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3051 |
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3052 void Metaspace::ergo_initialize() { |
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3053 if (DumpSharedSpaces) { |
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3054 // Using large pages when dumping the shared archive is currently not implemented. |
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3055 FLAG_SET_ERGO(bool, UseLargePagesInMetaspace, false); |
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3056 } |
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3057 |
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3058 size_t page_size = os::vm_page_size(); |
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3059 if (UseLargePages && UseLargePagesInMetaspace) { |
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3060 page_size = os::large_page_size(); |
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3061 } |
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3062 |
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3063 _commit_alignment = page_size; |
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3064 _reserve_alignment = MAX2(page_size, (size_t)os::vm_allocation_granularity()); |
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3065 |
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3066 // Do not use FLAG_SET_ERGO to update MaxMetaspaceSize, since this will |
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3067 // override if MaxMetaspaceSize was set on the command line or not. |
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3068 // This information is needed later to conform to the specification of the |
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3069 // java.lang.management.MemoryUsage API. |
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3070 // |
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3071 // Ideally, we would be able to set the default value of MaxMetaspaceSize in |
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3072 // globals.hpp to the aligned value, but this is not possible, since the |
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3073 // alignment depends on other flags being parsed. |
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3074 MaxMetaspaceSize = align_size_down_bounded(MaxMetaspaceSize, _reserve_alignment); |
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3075 |
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3076 if (MetaspaceSize > MaxMetaspaceSize) { |
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3077 MetaspaceSize = MaxMetaspaceSize; |
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3078 } |
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|
3079 |
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|
3080 MetaspaceSize = align_size_down_bounded(MetaspaceSize, _commit_alignment); |
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3081 |
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3082 assert(MetaspaceSize <= MaxMetaspaceSize, "MetaspaceSize should be limited by MaxMetaspaceSize"); |
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3083 |
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3084 if (MetaspaceSize < 256*K) { |
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3085 vm_exit_during_initialization("Too small initial Metaspace size"); |
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3086 } |
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3087 |
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|
3088 MinMetaspaceExpansion = align_size_down_bounded(MinMetaspaceExpansion, _commit_alignment); |
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|
3089 MaxMetaspaceExpansion = align_size_down_bounded(MaxMetaspaceExpansion, _commit_alignment); |
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|
3090 |
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|
3091 CompressedClassSpaceSize = align_size_down_bounded(CompressedClassSpaceSize, _reserve_alignment); |
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3092 set_compressed_class_space_size(CompressedClassSpaceSize); |
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3093 } |
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|
3094 |
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|
3095 void Metaspace::global_initialize() { |
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|
3096 // Initialize the alignment for shared spaces. |
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|
3097 int max_alignment = os::vm_page_size(); |
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3098 size_t cds_total = 0; |
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3099 |
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3100 MetaspaceShared::set_max_alignment(max_alignment); |
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3101 |
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3102 if (DumpSharedSpaces) { |
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3103 SharedReadOnlySize = align_size_up(SharedReadOnlySize, max_alignment); |
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3104 SharedReadWriteSize = align_size_up(SharedReadWriteSize, max_alignment); |
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3105 SharedMiscDataSize = align_size_up(SharedMiscDataSize, max_alignment); |
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3106 SharedMiscCodeSize = align_size_up(SharedMiscCodeSize, max_alignment); |
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3107 |
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|
3108 // Initialize with the sum of the shared space sizes. The read-only |
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|
3109 // and read write metaspace chunks will be allocated out of this and the |
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|
3110 // remainder is the misc code and data chunks. |
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3111 cds_total = FileMapInfo::shared_spaces_size(); |
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3112 cds_total = align_size_up(cds_total, _reserve_alignment); |
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3113 _space_list = new VirtualSpaceList(cds_total/wordSize); |
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3114 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk); |
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3115 |
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3116 if (!_space_list->initialization_succeeded()) { |
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3117 vm_exit_during_initialization("Unable to dump shared archive.", NULL); |
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3118 } |
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|
3119 |
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3120 #ifdef _LP64 |
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3121 if (cds_total + compressed_class_space_size() > UnscaledClassSpaceMax) { |
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3122 vm_exit_during_initialization("Unable to dump shared archive.", |
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3123 err_msg("Size of archive (" SIZE_FORMAT ") + compressed class space (" |
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3124 SIZE_FORMAT ") == total (" SIZE_FORMAT ") is larger than compressed " |
13000
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3125 "klass limit: " SIZE_FORMAT, cds_total, compressed_class_space_size(), |
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3126 cds_total + compressed_class_space_size(), UnscaledClassSpaceMax)); |
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|
3127 } |
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|
3128 |
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3129 // Set the compressed klass pointer base so that decoding of these pointers works |
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|
3130 // properly when creating the shared archive. |
12226
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3131 assert(UseCompressedOops && UseCompressedClassPointers, |
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3132 "UseCompressedOops and UseCompressedClassPointers must be set"); |
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|
3133 Universe::set_narrow_klass_base((address)_space_list->current_virtual_space()->bottom()); |
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|
3134 if (TraceMetavirtualspaceAllocation && Verbose) { |
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|
3135 gclog_or_tty->print_cr("Setting_narrow_klass_base to Address: " PTR_FORMAT, |
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|
3136 _space_list->current_virtual_space()->bottom()); |
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|
3137 } |
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|
3138 |
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|
3139 Universe::set_narrow_klass_shift(0); |
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|
3140 #endif |
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|
3141 |
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|
3142 } else { |
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|
3143 // If using shared space, open the file that contains the shared space |
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|
3144 // and map in the memory before initializing the rest of metaspace (so |
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|
3145 // the addresses don't conflict) |
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|
3146 address cds_address = NULL; |
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|
3147 if (UseSharedSpaces) { |
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|
3148 FileMapInfo* mapinfo = new FileMapInfo(); |
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|
3149 memset(mapinfo, 0, sizeof(FileMapInfo)); |
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|
3150 |
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|
3151 // Open the shared archive file, read and validate the header. If |
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|
3152 // initialization fails, shared spaces [UseSharedSpaces] are |
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|
3153 // disabled and the file is closed. |
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|
3154 // Map in spaces now also |
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|
3155 if (mapinfo->initialize() && MetaspaceShared::map_shared_spaces(mapinfo)) { |
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|
3156 FileMapInfo::set_current_info(mapinfo); |
12838
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|
3157 cds_total = FileMapInfo::shared_spaces_size(); |
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|
3158 cds_address = (address)mapinfo->region_base(0); |
6725
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|
3159 } else { |
da91efe96a93
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|
3160 assert(!mapinfo->is_open() && !UseSharedSpaces, |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3161 "archive file not closed or shared spaces not disabled."); |
da91efe96a93
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diff
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|
3162 } |
da91efe96a93
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parents:
diff
changeset
|
3163 } |
da91efe96a93
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|
3164 |
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|
3165 #ifdef _LP64 |
12226
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|
3166 // If UseCompressedClassPointers is set then allocate the metaspace area |
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|
3167 // above the heap and above the CDS area (if it exists). |
740e263c80c6
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|
3168 if (using_class_space()) { |
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|
3169 if (UseSharedSpaces) { |
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|
3170 char* cds_end = (char*)(cds_address + cds_total); |
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|
3171 cds_end = (char *)align_ptr_up(cds_end, _reserve_alignment); |
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|
3172 allocate_metaspace_compressed_klass_ptrs(cds_end, cds_address); |
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|
3173 } else { |
13000
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|
3174 char* base = (char*)align_ptr_up(Universe::heap()->reserved_region().end(), _reserve_alignment); |
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|
3175 allocate_metaspace_compressed_klass_ptrs(base, 0); |
12056
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|
3176 } |
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|
3177 } |
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|
3178 #endif |
740e263c80c6
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|
3179 |
7446
e51c9860cf66
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jmasa
parents:
7435
diff
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|
3180 // Initialize these before initializing the VirtualSpaceList |
6725
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|
3181 _first_chunk_word_size = InitialBootClassLoaderMetaspaceSize / BytesPerWord; |
7446
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|
3182 _first_chunk_word_size = align_word_size_up(_first_chunk_word_size); |
e51c9860cf66
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|
3183 // Make the first class chunk bigger than a medium chunk so it's not put |
e51c9860cf66
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|
3184 // on the medium chunk list. The next chunk will be small and progress |
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|
3185 // from there. This size calculated by -version. |
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|
3186 _first_class_chunk_word_size = MIN2((size_t)MediumChunk*6, |
12226
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ehelin
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|
3187 (CompressedClassSpaceSize/BytesPerWord)*2); |
7446
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|
3188 _first_class_chunk_word_size = align_word_size_up(_first_class_chunk_word_size); |
6725
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|
3189 // Arbitrarily set the initial virtual space to a multiple |
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coleenp
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|
3190 // of the boot class loader size. |
12838
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3191 size_t word_size = VIRTUALSPACEMULTIPLIER * _first_chunk_word_size; |
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|
3192 word_size = align_size_up(word_size, Metaspace::reserve_alignment_words()); |
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|
3193 |
6725
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|
3194 // Initialize the list of virtual spaces. |
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|
3195 _space_list = new VirtualSpaceList(word_size); |
12303
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|
3196 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk); |
12838
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|
3197 |
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|
3198 if (!_space_list->initialization_succeeded()) { |
85c1ca43713f
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|
3199 vm_exit_during_initialization("Unable to setup metadata virtual space list.", NULL); |
85c1ca43713f
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|
3200 } |
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|
3201 } |
12838
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|
3202 |
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|
3203 MetaspaceGC::initialize(); |
17768
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
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17695
diff
changeset
|
3204 _tracer = new MetaspaceTracer(); |
6725
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|
3205 } |
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changeset
|
3206 |
12303
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|
3207 Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype, |
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|
3208 size_t chunk_word_size, |
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|
3209 size_t chunk_bunch) { |
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|
3210 // Get a chunk from the chunk freelist |
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changeset
|
3211 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
|
3212 if (chunk != NULL) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3213 return chunk; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3214 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3215 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3216 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
|
3217 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3218 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3219 void Metaspace::initialize(Mutex* lock, MetaspaceType type) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3220 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3221 assert(space_list() != NULL, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3222 "Metadata VirtualSpaceList has not been initialized"); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3223 assert(chunk_manager_metadata() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3224 "Metadata ChunkManager has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3225 |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3226 _vsm = new SpaceManager(NonClassType, lock); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3227 if (_vsm == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3228 return; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3229 } |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3230 size_t word_size; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3231 size_t class_word_size; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3232 vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3233 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3234 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3235 assert(class_space_list() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3236 "Class VirtualSpaceList has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3237 assert(chunk_manager_class() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3238 "Class ChunkManager has not been initialized"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3239 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3240 // Allocate SpaceManager for classes. |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3241 _class_vsm = new SpaceManager(ClassType, lock); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3242 if (_class_vsm == NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3243 return; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3244 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3245 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3246 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3247 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
|
3248 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3249 // Allocate chunk for metadata objects |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3250 Metachunk* new_chunk = get_initialization_chunk(NonClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3251 word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3252 vsm()->medium_chunk_bunch()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3253 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
|
3254 if (new_chunk != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3255 // 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
|
3256 vsm()->add_chunk(new_chunk, true); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3257 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3258 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3259 // Allocate chunk for class metadata objects |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3260 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3261 Metachunk* class_chunk = get_initialization_chunk(ClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3262 class_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3263 class_vsm()->medium_chunk_bunch()); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3264 if (class_chunk != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3265 class_vsm()->add_chunk(class_chunk, true); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3266 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3267 } |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3268 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3269 _alloc_record_head = NULL; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3270 _alloc_record_tail = NULL; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3271 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3272 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3273 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
|
3274 size_t byte_size = word_size * wordSize; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3275 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
|
3276 } |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3277 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3278 MetaWord* Metaspace::allocate(size_t word_size, MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3279 // DumpSharedSpaces doesn't use class metadata area (yet) |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3280 // 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
|
3281 if (is_class_space_allocation(mdtype)) { |
6885 | 3282 return class_vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3283 } else { |
6885 | 3284 return vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3285 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3286 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3287 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3288 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
|
3289 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
|
3290 assert(delta_bytes > 0, "Must be"); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3291 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3292 size_t after_inc = MetaspaceGC::inc_capacity_until_GC(delta_bytes); |
17768
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3293 |
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3294 // capacity_until_GC might be updated concurrently, must calculate previous value. |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3295 size_t before_inc = after_inc - delta_bytes; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3296 |
17768
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3297 tracer()->report_gc_threshold(before_inc, after_inc, |
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3298 MetaspaceGCThresholdUpdater::ExpandAndAllocate); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3299 if (PrintGCDetails && Verbose) { |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3300 gclog_or_tty->print_cr("Increase capacity to GC from " SIZE_FORMAT |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3301 " to " SIZE_FORMAT, before_inc, after_inc); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3302 } |
6885 | 3303 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3304 return allocate(word_size, mdtype); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3305 } |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3306 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3307 // Space allocated in the Metaspace. This may |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3308 // be across several metadata virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3309 char* Metaspace::bottom() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3310 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
|
3311 return (char*)vsm()->current_chunk()->bottom(); |
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 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3314 size_t Metaspace::used_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3315 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3316 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
|
3317 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3318 return vsm()->sum_used_in_chunks_in_use(); // includes overhead! |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3319 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3320 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3321 |
12235 | 3322 size_t Metaspace::free_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3323 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3324 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
|
3325 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3326 return vsm()->sum_free_in_chunks_in_use(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3327 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3328 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3329 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3330 // Space capacity in the Metaspace. It includes |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3331 // space in the list of chunks from which allocations |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3332 // 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
|
3333 // in the space available in the dictionary which |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3334 // is already counted in some chunk. |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3335 size_t Metaspace::capacity_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3336 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3337 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
|
3338 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3339 return vsm()->sum_capacity_in_chunks_in_use(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3340 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3341 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3342 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3343 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
|
3344 return used_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3345 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3346 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3347 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
|
3348 return capacity_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3349 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3350 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3351 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
|
3352 if (SafepointSynchronize::is_at_safepoint()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3353 assert(Thread::current()->is_VM_thread(), "should be the VM thread"); |
6885 | 3354 // 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
|
3355 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
|
3356 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 3357 // Dark matter. Too small for dictionary. |
3358 #ifdef ASSERT | |
3359 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3360 #endif | |
3361 return; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3362 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3363 if (is_class && using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3364 class_vsm()->deallocate(ptr, word_size); |
6885 | 3365 } else { |
3366 vsm()->deallocate(ptr, word_size); | |
3367 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3368 } 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
|
3369 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
|
3370 |
17695
ab36007d6358
8034171: Remove use of template template parameters from binaryTreeDictionary.
goetz
parents:
17663
diff
changeset
|
3371 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 3372 // Dark matter. Too small for dictionary. |
3373 #ifdef ASSERT | |
3374 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3375 #endif | |
3376 return; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3377 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3378 if (is_class && using_class_space()) { |
6885 | 3379 class_vsm()->deallocate(ptr, word_size); |
3380 } else { | |
3381 vsm()->deallocate(ptr, word_size); | |
3382 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3383 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3384 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3385 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3386 |
12902 | 3387 MetaWord* Metaspace::allocate(ClassLoaderData* loader_data, size_t word_size, |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3388 bool read_only, MetaspaceObj::Type type, TRAPS) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3389 if (HAS_PENDING_EXCEPTION) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3390 assert(false, "Should not allocate with exception pending"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3391 return NULL; // caller does a CHECK_NULL too |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3392 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3393 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3394 assert(loader_data != NULL, "Should never pass around a NULL loader_data. " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3395 "ClassLoaderData::the_null_class_loader_data() should have been used."); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3396 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3397 // Allocate in metaspaces without taking out a lock, because it deadlocks |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3398 // with the SymbolTable_lock. Dumping is single threaded for now. We'll have |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3399 // to revisit this for application class data sharing. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3400 if (DumpSharedSpaces) { |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3401 assert(type > MetaspaceObj::UnknownType && type < MetaspaceObj::_number_of_types, "sanity"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3402 Metaspace* space = read_only ? loader_data->ro_metaspace() : loader_data->rw_metaspace(); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3403 MetaWord* result = space->allocate(word_size, NonClassType); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3404 if (result == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3405 report_out_of_shared_space(read_only ? SharedReadOnly : SharedReadWrite); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3406 } |
12902 | 3407 |
3408 space->record_allocation(result, type, space->vsm()->get_raw_word_size(word_size)); | |
3409 | |
3410 // Zero initialize. | |
3411 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0); | |
3412 | |
3413 return result; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3414 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3415 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3416 MetadataType mdtype = (type == MetaspaceObj::ClassType) ? ClassType : NonClassType; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3417 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3418 // Try to allocate metadata. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3419 MetaWord* result = loader_data->metaspace_non_null()->allocate(word_size, mdtype); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3420 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3421 if (result == NULL) { |
17769
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3422 tracer()->report_metaspace_allocation_failure(loader_data, word_size, type, mdtype); |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3423 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3424 // Allocation failed. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3425 if (is_init_completed()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3426 // Only start a GC if the bootstrapping has completed. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3427 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3428 // Try to clean out some memory and retry. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3429 result = Universe::heap()->collector_policy()->satisfy_failed_metadata_allocation( |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3430 loader_data, word_size, mdtype); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3431 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3432 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3433 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3434 if (result == NULL) { |
17770
5af31f70a866
8036701: Add trace event when a metaspace throws out of memory error
ehelin
parents:
17769
diff
changeset
|
3435 report_metadata_oome(loader_data, word_size, type, mdtype, CHECK_NULL); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3436 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3437 |
12902 | 3438 // Zero initialize. |
3439 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0); | |
3440 | |
3441 return result; | |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3442 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3443 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3444 size_t Metaspace::class_chunk_size(size_t word_size) { |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3445 assert(using_class_space(), "Has to use class space"); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3446 return class_vsm()->calc_chunk_size(word_size); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3447 } |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3448 |
17770
5af31f70a866
8036701: Add trace event when a metaspace throws out of memory error
ehelin
parents:
17769
diff
changeset
|
3449 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
ehelin
parents:
17769
diff
changeset
|
3450 tracer()->report_metadata_oom(loader_data, word_size, type, mdtype); |
5af31f70a866
8036701: Add trace event when a metaspace throws out of memory error
ehelin
parents:
17769
diff
changeset
|
3451 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3452 // If result is still null, we are out of memory. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3453 if (Verbose && TraceMetadataChunkAllocation) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3454 gclog_or_tty->print_cr("Metaspace allocation failed for size " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3455 SIZE_FORMAT, word_size); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3456 if (loader_data->metaspace_or_null() != NULL) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3457 loader_data->dump(gclog_or_tty); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3458 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3459 MetaspaceAux::dump(gclog_or_tty); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3460 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3461 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3462 bool out_of_compressed_class_space = false; |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3463 if (is_class_space_allocation(mdtype)) { |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3464 Metaspace* metaspace = loader_data->metaspace_non_null(); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3465 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
|
3466 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
|
3467 (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
|
3468 CompressedClassSpaceSize; |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3469 } |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3470 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3471 // -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
|
3472 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
|
3473 "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
|
3474 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3475 report_java_out_of_memory(space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3476 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3477 if (JvmtiExport::should_post_resource_exhausted()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3478 JvmtiExport::post_resource_exhausted( |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3479 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3480 space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3481 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3482 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3483 if (!is_init_completed()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3484 vm_exit_during_initialization("OutOfMemoryError", space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3485 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3486 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3487 if (out_of_compressed_class_space) { |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3488 THROW_OOP(Universe::out_of_memory_error_class_metaspace()); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3489 } else { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3490 THROW_OOP(Universe::out_of_memory_error_metaspace()); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3491 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3492 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3493 |
17769
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3494 const char* Metaspace::metadata_type_name(Metaspace::MetadataType mdtype) { |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3495 switch (mdtype) { |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3496 case Metaspace::ClassType: return "Class"; |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3497 case Metaspace::NonClassType: return "Metadata"; |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3498 default: |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3499 assert(false, err_msg("Got bad mdtype: %d", (int) mdtype)); |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3500 return NULL; |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3501 } |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3502 } |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3503 |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3504 void Metaspace::record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3505 assert(DumpSharedSpaces, "sanity"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3506 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3507 AllocRecord *rec = new AllocRecord((address)ptr, type, (int)word_size * HeapWordSize); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3508 if (_alloc_record_head == NULL) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3509 _alloc_record_head = _alloc_record_tail = rec; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3510 } else { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3511 _alloc_record_tail->_next = rec; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3512 _alloc_record_tail = rec; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3513 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3514 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3515 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3516 void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3517 assert(DumpSharedSpaces, "unimplemented for !DumpSharedSpaces"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3518 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3519 address last_addr = (address)bottom(); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3520 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3521 for (AllocRecord *rec = _alloc_record_head; rec; rec = rec->_next) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3522 address ptr = rec->_ptr; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3523 if (last_addr < ptr) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3524 closure->doit(last_addr, MetaspaceObj::UnknownType, ptr - last_addr); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3525 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3526 closure->doit(ptr, rec->_type, rec->_byte_size); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3527 last_addr = ptr + rec->_byte_size; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3528 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3529 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3530 address top = ((address)bottom()) + used_bytes_slow(Metaspace::NonClassType); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3531 if (last_addr < top) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3532 closure->doit(last_addr, MetaspaceObj::UnknownType, top - last_addr); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3533 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3534 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3535 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3536 void Metaspace::purge(MetadataType mdtype) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3537 get_space_list(mdtype)->purge(get_chunk_manager(mdtype)); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3538 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3539 |
10175 | 3540 void Metaspace::purge() { |
3541 MutexLockerEx cl(SpaceManager::expand_lock(), | |
3542 Mutex::_no_safepoint_check_flag); | |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3543 purge(NonClassType); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3544 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3545 purge(ClassType); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3546 } |
10175 | 3547 } |
3548 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3549 void Metaspace::print_on(outputStream* out) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3550 // Print both class virtual space counts and metaspace. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3551 if (Verbose) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3552 vsm()->print_on(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3553 if (using_class_space()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3554 class_vsm()->print_on(out); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3555 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3556 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3557 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3558 |
17663
40353abd7984
8029178: Parallel class loading test anonymous-simple gets SIGSEGV in Metaspace::contains
coleenp
parents:
13439
diff
changeset
|
3559 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
|
3560 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
|
3561 return true; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3562 } |
17935
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3563 |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3564 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
|
3565 return true; |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3566 } |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3567 |
7384f6a12fc1
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
17866
diff
changeset
|
3568 return get_space_list(NonClassType)->contains(ptr); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3569 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3570 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3571 void Metaspace::verify() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3572 vsm()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3573 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3574 class_vsm()->verify(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3575 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3576 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3577 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3578 void Metaspace::dump(outputStream* const out) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3579 out->print_cr("\nVirtual space manager: " INTPTR_FORMAT, vsm()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3580 vsm()->dump(out); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3581 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3582 out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm()); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3583 class_vsm()->dump(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3584 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3585 } |
12236
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3586 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3587 /////////////// Unit tests /////////////// |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3588 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3589 #ifndef PRODUCT |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3590 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3591 class TestMetaspaceAuxTest : AllStatic { |
12236
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3592 public: |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3593 static void test_reserved() { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3594 size_t reserved = MetaspaceAux::reserved_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3595 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3596 assert(reserved > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3597 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3598 size_t committed = MetaspaceAux::committed_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3599 assert(committed <= reserved, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3600 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3601 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
|
3602 assert(reserved_metadata > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3603 assert(reserved_metadata <= reserved, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3604 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3605 if (UseCompressedClassPointers) { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3606 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
|
3607 assert(reserved_class > 0, "assert"); |
c4c768305a8f
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|
3608 assert(reserved_class < reserved, "assert"); |
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|
3609 } |
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|
3610 } |
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|
3611 |
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|
3612 static void test_committed() { |
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|
3613 size_t committed = MetaspaceAux::committed_bytes(); |
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|
3614 |
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|
3615 assert(committed > 0, "assert"); |
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|
3616 |
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|
3617 size_t reserved = MetaspaceAux::reserved_bytes(); |
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|
3618 assert(committed <= reserved, "assert"); |
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|
3619 |
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|
3620 size_t committed_metadata = MetaspaceAux::committed_bytes(Metaspace::NonClassType); |
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|
3621 assert(committed_metadata > 0, "assert"); |
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|
3622 assert(committed_metadata <= committed, "assert"); |
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|
3623 |
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|
3624 if (UseCompressedClassPointers) { |
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|
3625 size_t committed_class = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
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|
3626 assert(committed_class > 0, "assert"); |
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|
3627 assert(committed_class < committed, "assert"); |
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|
3628 } |
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|
3629 } |
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|
3630 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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|
3631 static void test_virtual_space_list_large_chunk() { |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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|
3632 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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|
3633 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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|
3634 // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be |
03f493ce3a71
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brutisso
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|
3635 // vm_allocation_granularity aligned on Windows. |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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|
3636 size_t large_size = (size_t)(2*256*K + (os::vm_page_size()/BytesPerWord)); |
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|
3637 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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|
3638 vs_list->get_new_chunk(large_size, large_size, 0); |
03f493ce3a71
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parents:
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diff
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|
3639 } |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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parents:
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|
3640 |
12236
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|
3641 static void test() { |
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|
3642 test_reserved(); |
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|
3643 test_committed(); |
12306
03f493ce3a71
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|
3644 test_virtual_space_list_large_chunk(); |
12236
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|
3645 } |
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|
3646 }; |
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|
3647 |
12306
03f493ce3a71
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parents:
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diff
changeset
|
3648 void TestMetaspaceAux_test() { |
03f493ce3a71
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parents:
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diff
changeset
|
3649 TestMetaspaceAuxTest::test(); |
12236
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|
3650 } |
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|
3651 |
12979
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8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3652 class TestVirtualSpaceNodeTest { |
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|
3653 static void chunk_up(size_t words_left, size_t& num_medium_chunks, |
1d1ea10fe09f
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|
3654 size_t& num_small_chunks, |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3655 size_t& num_specialized_chunks) { |
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|
3656 num_medium_chunks = words_left / MediumChunk; |
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|
3657 words_left = words_left % MediumChunk; |
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8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3658 |
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|
3659 num_small_chunks = words_left / SmallChunk; |
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|
3660 words_left = words_left % SmallChunk; |
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8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3661 // how many specialized chunks can we get? |
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|
3662 num_specialized_chunks = words_left / SpecializedChunk; |
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|
3663 assert(words_left % SpecializedChunk == 0, "should be nothing left"); |
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|
3664 } |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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changeset
|
3665 |
1d1ea10fe09f
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|
3666 public: |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3667 static void test() { |
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|
3668 MutexLockerEx ml(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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|
3669 const size_t vsn_test_size_words = MediumChunk * 4; |
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|
3670 const size_t vsn_test_size_bytes = vsn_test_size_words * BytesPerWord; |
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|
3671 |
1d1ea10fe09f
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|
3672 // The chunk sizes must be multiples of eachother, or this will fail |
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|
3673 STATIC_ASSERT(MediumChunk % SmallChunk == 0); |
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|
3674 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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|
3675 |
1d1ea10fe09f
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mgerdin
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diff
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|
3676 { // No committed memory in VSN |
1d1ea10fe09f
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mgerdin
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diff
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|
3677 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
1d1ea10fe09f
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mgerdin
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diff
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|
3678 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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mgerdin
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|
3679 vsn.initialize(); |
1d1ea10fe09f
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|
3680 vsn.retire(&cm); |
1d1ea10fe09f
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diff
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|
3681 assert(cm.sum_free_chunks_count() == 0, "did not commit any memory in the VSN"); |
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|
3682 } |
1d1ea10fe09f
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diff
changeset
|
3683 |
1d1ea10fe09f
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diff
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|
3684 { // All of VSN is committed, half is used by chunks |
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|
3685 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
1d1ea10fe09f
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diff
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|
3686 VirtualSpaceNode vsn(vsn_test_size_bytes); |
1d1ea10fe09f
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|
3687 vsn.initialize(); |
1d1ea10fe09f
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|
3688 vsn.expand_by(vsn_test_size_words, vsn_test_size_words); |
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|
3689 vsn.get_chunk_vs(MediumChunk); |
1d1ea10fe09f
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|
3690 vsn.get_chunk_vs(MediumChunk); |
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|
3691 vsn.retire(&cm); |
1d1ea10fe09f
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|
3692 assert(cm.sum_free_chunks_count() == 2, "should have been memory left for 2 medium chunks"); |
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|
3693 assert(cm.sum_free_chunks() == 2*MediumChunk, "sizes should add up"); |
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|
3694 } |
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|
3695 |
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|
3696 { // 4 pages of VSN is committed, some is used by chunks |
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|
3697 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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|
3698 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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|
3699 const size_t page_chunks = 4 * (size_t)os::vm_page_size() / BytesPerWord; |
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|
3700 assert(page_chunks < MediumChunk, "Test expects medium chunks to be at least 4*page_size"); |
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|
3701 vsn.initialize(); |
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|
3702 vsn.expand_by(page_chunks, page_chunks); |
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|
3703 vsn.get_chunk_vs(SmallChunk); |
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|
3704 vsn.get_chunk_vs(SpecializedChunk); |
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|
3705 vsn.retire(&cm); |
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|
3706 |
1d1ea10fe09f
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|
3707 // committed - used = words left to retire |
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|
3708 const size_t words_left = page_chunks - SmallChunk - SpecializedChunk; |
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|
3709 |
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|
3710 size_t num_medium_chunks, num_small_chunks, num_spec_chunks; |
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|
3711 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks); |
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|
3712 |
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|
3713 assert(num_medium_chunks == 0, "should not get any medium chunks"); |
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|
3714 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks"); |
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|
3715 assert(cm.sum_free_chunks() == words_left, "sizes should add up"); |
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|
3716 } |
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|
3717 |
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|
3718 { // Half of VSN is committed, a humongous chunk is used |
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|
3719 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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3720 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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3721 vsn.initialize(); |
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3722 vsn.expand_by(MediumChunk * 2, MediumChunk * 2); |
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3723 vsn.get_chunk_vs(MediumChunk + SpecializedChunk); // Humongous chunks will be aligned up to MediumChunk + SpecializedChunk |
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3724 vsn.retire(&cm); |
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3725 |
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3726 const size_t words_left = MediumChunk * 2 - (MediumChunk + SpecializedChunk); |
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3727 size_t num_medium_chunks, num_small_chunks, num_spec_chunks; |
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3728 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks); |
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3729 |
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3730 assert(num_medium_chunks == 0, "should not get any medium chunks"); |
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3731 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks"); |
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3732 assert(cm.sum_free_chunks() == words_left, "sizes should add up"); |
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3733 } |
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3734 |
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3735 } |
13439
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3736 |
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3737 #define assert_is_available_positive(word_size) \ |
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3738 assert(vsn.is_available(word_size), \ |
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3739 err_msg(#word_size ": " PTR_FORMAT " bytes were not available in " \ |
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3740 "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \ |
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3741 (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end())); |
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3742 |
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3743 #define assert_is_available_negative(word_size) \ |
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3744 assert(!vsn.is_available(word_size), \ |
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3745 err_msg(#word_size ": " PTR_FORMAT " bytes should not be available in " \ |
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3746 "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \ |
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3747 (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end())); |
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3748 |
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3749 static void test_is_available_positive() { |
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3750 // Reserve some memory. |
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3751 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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3752 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3753 |
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3754 // Commit some memory. |
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3755 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3756 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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3757 assert(expanded, "Failed to commit"); |
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3758 |
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3759 // Check that is_available accepts the committed size. |
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3760 assert_is_available_positive(commit_word_size); |
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3761 |
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3762 // Check that is_available accepts half the committed size. |
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3763 size_t expand_word_size = commit_word_size / 2; |
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3764 assert_is_available_positive(expand_word_size); |
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3765 } |
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3766 |
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3767 static void test_is_available_negative() { |
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3768 // Reserve some memory. |
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3769 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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|
3770 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3771 |
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3772 // Commit some memory. |
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3773 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3774 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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|
3775 assert(expanded, "Failed to commit"); |
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3776 |
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3777 // Check that is_available doesn't accept a too large size. |
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3778 size_t two_times_commit_word_size = commit_word_size * 2; |
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|
3779 assert_is_available_negative(two_times_commit_word_size); |
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3780 } |
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3781 |
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3782 static void test_is_available_overflow() { |
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3783 // Reserve some memory. |
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3784 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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|
3785 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3786 |
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3787 // Commit some memory. |
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3788 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3789 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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|
3790 assert(expanded, "Failed to commit"); |
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3791 |
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3792 // Calculate a size that will overflow the virtual space size. |
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3793 void* virtual_space_max = (void*)(uintptr_t)-1; |
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3794 size_t bottom_to_max = pointer_delta(virtual_space_max, vsn.bottom(), 1); |
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3795 size_t overflow_size = bottom_to_max + BytesPerWord; |
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3796 size_t overflow_word_size = overflow_size / BytesPerWord; |
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3797 |
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3798 // Check that is_available can handle the overflow. |
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3799 assert_is_available_negative(overflow_word_size); |
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3800 } |
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3801 |
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3802 static void test_is_available() { |
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3803 TestVirtualSpaceNodeTest::test_is_available_positive(); |
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3804 TestVirtualSpaceNodeTest::test_is_available_negative(); |
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3805 TestVirtualSpaceNodeTest::test_is_available_overflow(); |
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3806 } |
12979
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3807 }; |
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3808 |
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3809 void TestVirtualSpaceNode_test() { |
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3810 TestVirtualSpaceNodeTest::test(); |
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3811 TestVirtualSpaceNodeTest::test_is_available(); |
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3812 } |
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3813 #endif |