Mercurial > hg > graal-jvmci-8
annotate src/share/vm/memory/metaspace.cpp @ 12226:7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel
author | ehelin |
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date | Mon, 12 Aug 2013 17:37:02 +0200 |
parents | 4c84d351cca9 |
children | 24e87613ee58 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 #include "precompiled.hpp" |
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25 #include "gc_interface/collectedHeap.hpp" |
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26 #include "memory/binaryTreeDictionary.hpp" |
6885 | 27 #include "memory/freeList.hpp" |
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28 #include "memory/collectorPolicy.hpp" |
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29 #include "memory/filemap.hpp" |
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30 #include "memory/freeList.hpp" |
6885 | 31 #include "memory/metablock.hpp" |
32 #include "memory/metachunk.hpp" | |
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33 #include "memory/metaspace.hpp" |
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34 #include "memory/metaspaceShared.hpp" |
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35 #include "memory/resourceArea.hpp" |
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36 #include "memory/universe.hpp" |
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37 #include "runtime/globals.hpp" |
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38 #include "runtime/java.hpp" |
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39 #include "runtime/mutex.hpp" |
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40 #include "runtime/orderAccess.hpp" |
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41 #include "services/memTracker.hpp" |
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42 #include "utilities/copy.hpp" |
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43 #include "utilities/debug.hpp" |
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44 |
6885 | 45 typedef BinaryTreeDictionary<Metablock, FreeList> BlockTreeDictionary; |
46 typedef BinaryTreeDictionary<Metachunk, FreeList> ChunkTreeDictionary; | |
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47 // Define this macro to enable slow integrity checking of |
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48 // the free chunk lists |
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49 const bool metaspace_slow_verify = false; |
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50 |
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51 // Parameters for stress mode testing |
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52 const uint metadata_deallocate_a_lot_block = 10; |
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53 const uint metadata_deallocate_a_lock_chunk = 3; |
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54 size_t const allocation_from_dictionary_limit = 64 * K; |
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55 |
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56 MetaWord* last_allocated = 0; |
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57 |
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58 size_t Metaspace::_class_metaspace_size; |
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59 |
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60 // Used in declarations in SpaceManager and ChunkManager |
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61 enum ChunkIndex { |
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62 ZeroIndex = 0, |
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63 SpecializedIndex = ZeroIndex, |
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64 SmallIndex = SpecializedIndex + 1, |
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65 MediumIndex = SmallIndex + 1, |
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66 HumongousIndex = MediumIndex + 1, |
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67 NumberOfFreeLists = 3, |
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68 NumberOfInUseLists = 4 |
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69 }; |
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70 |
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71 enum ChunkSizes { // in words. |
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72 ClassSpecializedChunk = 128, |
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73 SpecializedChunk = 128, |
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74 ClassSmallChunk = 256, |
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75 SmallChunk = 512, |
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76 ClassMediumChunk = 4 * K, |
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77 MediumChunk = 8 * K, |
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78 HumongousChunkGranularity = 8 |
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79 }; |
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80 |
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81 static ChunkIndex next_chunk_index(ChunkIndex i) { |
6885 | 82 assert(i < NumberOfInUseLists, "Out of bound"); |
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83 return (ChunkIndex) (i+1); |
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84 } |
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85 |
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86 // Originally _capacity_until_GC was set to MetaspaceSize here but |
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87 // the default MetaspaceSize before argument processing was being |
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88 // used which was not the desired value. See the code |
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89 // in should_expand() to see how the initialization is handled |
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90 // now. |
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91 size_t MetaspaceGC::_capacity_until_GC = 0; |
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92 bool MetaspaceGC::_expand_after_GC = false; |
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93 uint MetaspaceGC::_shrink_factor = 0; |
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94 bool MetaspaceGC::_should_concurrent_collect = false; |
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95 |
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96 // Blocks of space for metadata are allocated out of Metachunks. |
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97 // |
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98 // Metachunk are allocated out of MetadataVirtualspaces and once |
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99 // allocated there is no explicit link between a Metachunk and |
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100 // the MetadataVirtualspaces from which it was allocated. |
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101 // |
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102 // Each SpaceManager maintains a |
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103 // list of the chunks it is using and the current chunk. The current |
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104 // chunk is the chunk from which allocations are done. Space freed in |
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105 // a chunk is placed on the free list of blocks (BlockFreelist) and |
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106 // reused from there. |
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107 |
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108 typedef class FreeList<Metachunk> ChunkList; |
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109 |
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110 // Manages the global free lists of chunks. |
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111 // Has three lists of free chunks, and a total size and |
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112 // count that includes all three |
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113 |
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114 class ChunkManager VALUE_OBJ_CLASS_SPEC { |
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115 |
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116 // Free list of chunks of different sizes. |
10175 | 117 // SpecializedChunk |
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118 // SmallChunk |
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119 // MediumChunk |
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120 // HumongousChunk |
6885 | 121 ChunkList _free_chunks[NumberOfFreeLists]; |
122 | |
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123 |
6885 | 124 // HumongousChunk |
125 ChunkTreeDictionary _humongous_dictionary; | |
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126 |
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127 // ChunkManager in all lists of this type |
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128 size_t _free_chunks_total; |
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129 size_t _free_chunks_count; |
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130 |
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131 void dec_free_chunks_total(size_t v) { |
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132 assert(_free_chunks_count > 0 && |
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133 _free_chunks_total > 0, |
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134 "About to go negative"); |
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135 Atomic::add_ptr(-1, &_free_chunks_count); |
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136 jlong minus_v = (jlong) - (jlong) v; |
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137 Atomic::add_ptr(minus_v, &_free_chunks_total); |
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138 } |
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139 |
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140 // Debug support |
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141 |
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142 size_t sum_free_chunks(); |
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143 size_t sum_free_chunks_count(); |
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144 |
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145 void locked_verify_free_chunks_total(); |
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146 void slow_locked_verify_free_chunks_total() { |
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147 if (metaspace_slow_verify) { |
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148 locked_verify_free_chunks_total(); |
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149 } |
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150 } |
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151 void locked_verify_free_chunks_count(); |
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152 void slow_locked_verify_free_chunks_count() { |
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153 if (metaspace_slow_verify) { |
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154 locked_verify_free_chunks_count(); |
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155 } |
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156 } |
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157 void verify_free_chunks_count(); |
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158 |
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159 public: |
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160 |
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161 ChunkManager() : _free_chunks_total(0), _free_chunks_count(0) {} |
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162 |
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163 // add or delete (return) a chunk to the global freelist. |
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164 Metachunk* chunk_freelist_allocate(size_t word_size); |
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165 void chunk_freelist_deallocate(Metachunk* chunk); |
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166 |
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167 // Map a size to a list index assuming that there are lists |
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168 // for special, small, medium, and humongous chunks. |
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169 static ChunkIndex list_index(size_t size); |
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170 |
10175 | 171 // Remove the chunk from its freelist. It is |
172 // expected to be on one of the _free_chunks[] lists. | |
173 void remove_chunk(Metachunk* chunk); | |
174 | |
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175 // Add the simple linked list of chunks to the freelist of chunks |
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176 // of type index. |
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177 void return_chunks(ChunkIndex index, Metachunk* chunks); |
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178 |
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179 // Total of the space in the free chunks list |
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180 size_t free_chunks_total(); |
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181 size_t free_chunks_total_in_bytes(); |
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182 |
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183 // Number of chunks in the free chunks list |
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184 size_t free_chunks_count(); |
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185 |
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186 void inc_free_chunks_total(size_t v, size_t count = 1) { |
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187 Atomic::add_ptr(count, &_free_chunks_count); |
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188 Atomic::add_ptr(v, &_free_chunks_total); |
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189 } |
6885 | 190 ChunkTreeDictionary* humongous_dictionary() { |
191 return &_humongous_dictionary; | |
192 } | |
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193 |
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194 ChunkList* free_chunks(ChunkIndex index); |
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195 |
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196 // Returns the list for the given chunk word size. |
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197 ChunkList* find_free_chunks_list(size_t word_size); |
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198 |
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199 // Add and remove from a list by size. Selects |
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200 // list based on size of chunk. |
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201 void free_chunks_put(Metachunk* chuck); |
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202 Metachunk* free_chunks_get(size_t chunk_word_size); |
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203 |
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204 // Debug support |
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205 void verify(); |
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206 void slow_verify() { |
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207 if (metaspace_slow_verify) { |
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208 verify(); |
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209 } |
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210 } |
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211 void locked_verify(); |
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212 void slow_locked_verify() { |
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213 if (metaspace_slow_verify) { |
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214 locked_verify(); |
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215 } |
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216 } |
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217 void verify_free_chunks_total(); |
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218 |
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219 void locked_print_free_chunks(outputStream* st); |
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220 void locked_print_sum_free_chunks(outputStream* st); |
6885 | 221 |
222 void print_on(outputStream* st); | |
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223 }; |
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224 |
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225 // Used to manage the free list of Metablocks (a block corresponds |
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226 // to the allocation of a quantum of metadata). |
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227 class BlockFreelist VALUE_OBJ_CLASS_SPEC { |
6885 | 228 BlockTreeDictionary* _dictionary; |
229 static Metablock* initialize_free_chunk(MetaWord* p, size_t word_size); | |
230 | |
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231 // Accessors |
6885 | 232 BlockTreeDictionary* dictionary() const { return _dictionary; } |
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233 |
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234 public: |
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235 BlockFreelist(); |
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236 ~BlockFreelist(); |
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237 |
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238 // Get and return a block to the free list |
6885 | 239 MetaWord* get_block(size_t word_size); |
240 void return_block(MetaWord* p, size_t word_size); | |
241 | |
242 size_t total_size() { | |
243 if (dictionary() == NULL) { | |
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244 return 0; |
6885 | 245 } else { |
246 return dictionary()->total_size(); | |
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247 } |
6885 | 248 } |
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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 class VirtualSpaceNode : public CHeapObj<mtClass> { |
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254 friend class VirtualSpaceList; |
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255 |
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256 // Link to next VirtualSpaceNode |
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257 VirtualSpaceNode* _next; |
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258 |
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259 // total in the VirtualSpace |
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260 MemRegion _reserved; |
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261 ReservedSpace _rs; |
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262 VirtualSpace _virtual_space; |
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263 MetaWord* _top; |
10175 | 264 // count of chunks contained in this VirtualSpace |
265 uintx _container_count; | |
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266 |
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267 // Convenience functions to access the _virtual_space |
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268 char* low() const { return virtual_space()->low(); } |
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269 char* high() const { return virtual_space()->high(); } |
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270 |
10175 | 271 // The first Metachunk will be allocated at the bottom of the |
272 // VirtualSpace | |
273 Metachunk* first_chunk() { return (Metachunk*) bottom(); } | |
274 | |
275 void inc_container_count(); | |
276 #ifdef ASSERT | |
277 uint container_count_slow(); | |
278 #endif | |
279 | |
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280 public: |
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281 |
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282 VirtualSpaceNode(size_t byte_size); |
10175 | 283 VirtualSpaceNode(ReservedSpace rs) : _top(NULL), _next(NULL), _rs(rs), _container_count(0) {} |
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284 ~VirtualSpaceNode(); |
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285 |
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286 // Convenience functions for logical bottom and end |
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287 MetaWord* bottom() const { return (MetaWord*) _virtual_space.low(); } |
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288 MetaWord* end() const { return (MetaWord*) _virtual_space.high(); } |
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289 |
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290 // address of next available space in _virtual_space; |
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291 // Accessors |
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292 VirtualSpaceNode* next() { return _next; } |
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293 void set_next(VirtualSpaceNode* v) { _next = v; } |
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294 |
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295 void set_reserved(MemRegion const v) { _reserved = v; } |
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296 void set_top(MetaWord* v) { _top = v; } |
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297 |
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298 // Accessors |
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299 MemRegion* reserved() { return &_reserved; } |
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300 VirtualSpace* virtual_space() const { return (VirtualSpace*) &_virtual_space; } |
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301 |
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302 // Returns true if "word_size" is available in the VirtualSpace |
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303 bool is_available(size_t word_size) { return _top + word_size <= end(); } |
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304 |
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305 MetaWord* top() const { return _top; } |
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306 void inc_top(size_t word_size) { _top += word_size; } |
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307 |
10175 | 308 uintx container_count() { return _container_count; } |
309 void dec_container_count(); | |
310 #ifdef ASSERT | |
311 void verify_container_count(); | |
312 #endif | |
313 | |
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314 // used and capacity in this single entry in the list |
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315 size_t used_words_in_vs() const; |
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316 size_t capacity_words_in_vs() const; |
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317 size_t free_words_in_vs() const; |
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318 |
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319 bool initialize(); |
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320 |
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321 // get space from the virtual space |
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322 Metachunk* take_from_committed(size_t chunk_word_size); |
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323 |
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324 // Allocate a chunk from the virtual space and return it. |
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325 Metachunk* get_chunk_vs(size_t chunk_word_size); |
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326 Metachunk* get_chunk_vs_with_expand(size_t chunk_word_size); |
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327 |
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328 // Expands/shrinks the committed space in a virtual space. Delegates |
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329 // to Virtualspace |
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330 bool expand_by(size_t words, bool pre_touch = false); |
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331 bool shrink_by(size_t words); |
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332 |
10175 | 333 // In preparation for deleting this node, remove all the chunks |
334 // in the node from any freelist. | |
335 void purge(ChunkManager* chunk_manager); | |
336 | |
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337 #ifdef ASSERT |
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338 // Debug support |
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339 static void verify_virtual_space_total(); |
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340 static void verify_virtual_space_count(); |
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341 void mangle(); |
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342 #endif |
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343 |
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344 void print_on(outputStream* st) const; |
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345 }; |
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346 |
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347 // byte_size is the size of the associated virtualspace. |
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348 VirtualSpaceNode::VirtualSpaceNode(size_t byte_size) : _top(NULL), _next(NULL), _rs(), _container_count(0) { |
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349 // align up to vm allocation granularity |
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350 byte_size = align_size_up(byte_size, os::vm_allocation_granularity()); |
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351 |
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352 // This allocates memory with mmap. For DumpSharedspaces, try to reserve |
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353 // configurable address, generally at the top of the Java heap so other |
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354 // memory addresses don't conflict. |
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355 if (DumpSharedSpaces) { |
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356 char* shared_base = (char*)SharedBaseAddress; |
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357 _rs = ReservedSpace(byte_size, 0, false, shared_base, 0); |
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358 if (_rs.is_reserved()) { |
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359 assert(shared_base == 0 || _rs.base() == shared_base, "should match"); |
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360 } else { |
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361 // Get a mmap region anywhere if the SharedBaseAddress fails. |
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362 _rs = ReservedSpace(byte_size); |
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363 } |
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364 MetaspaceShared::set_shared_rs(&_rs); |
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365 } else { |
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366 _rs = ReservedSpace(byte_size); |
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367 } |
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368 |
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369 MemTracker::record_virtual_memory_type((address)_rs.base(), mtClass); |
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370 } |
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371 |
10175 | 372 void VirtualSpaceNode::purge(ChunkManager* chunk_manager) { |
373 Metachunk* chunk = first_chunk(); | |
374 Metachunk* invalid_chunk = (Metachunk*) top(); | |
375 while (chunk < invalid_chunk ) { | |
376 assert(chunk->is_free(), "Should be marked free"); | |
377 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
378 chunk_manager->remove_chunk(chunk); | |
379 assert(chunk->next() == NULL && | |
380 chunk->prev() == NULL, | |
381 "Was not removed from its list"); | |
382 chunk = (Metachunk*) next; | |
383 } | |
384 } | |
385 | |
386 #ifdef ASSERT | |
387 uint VirtualSpaceNode::container_count_slow() { | |
388 uint count = 0; | |
389 Metachunk* chunk = first_chunk(); | |
390 Metachunk* invalid_chunk = (Metachunk*) top(); | |
391 while (chunk < invalid_chunk ) { | |
392 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
393 // Don't count the chunks on the free lists. Those are | |
394 // still part of the VirtualSpaceNode but not currently | |
395 // counted. | |
396 if (!chunk->is_free()) { | |
397 count++; | |
398 } | |
399 chunk = (Metachunk*) next; | |
400 } | |
401 return count; | |
402 } | |
403 #endif | |
404 | |
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405 // List of VirtualSpaces for metadata allocation. |
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406 // It has a _next link for singly linked list and a MemRegion |
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407 // for total space in the VirtualSpace. |
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408 class VirtualSpaceList : public CHeapObj<mtClass> { |
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409 friend class VirtualSpaceNode; |
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410 |
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411 enum VirtualSpaceSizes { |
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412 VirtualSpaceSize = 256 * K |
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413 }; |
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414 |
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415 // Global list of virtual spaces |
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416 // Head of the list |
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417 VirtualSpaceNode* _virtual_space_list; |
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418 // virtual space currently being used for allocations |
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419 VirtualSpaceNode* _current_virtual_space; |
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420 // Free chunk list for all other metadata |
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421 ChunkManager _chunk_manager; |
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422 |
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423 // Can this virtual list allocate >1 spaces? Also, used to determine |
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424 // whether to allocate unlimited small chunks in this virtual space |
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425 bool _is_class; |
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426 bool can_grow() const { return !is_class() || !UseCompressedClassPointers; } |
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427 |
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428 // Sum of space in all virtual spaces and number of virtual spaces |
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429 size_t _virtual_space_total; |
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430 size_t _virtual_space_count; |
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431 |
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432 ~VirtualSpaceList(); |
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433 |
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434 VirtualSpaceNode* virtual_space_list() const { return _virtual_space_list; } |
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435 |
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436 void set_virtual_space_list(VirtualSpaceNode* v) { |
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437 _virtual_space_list = v; |
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438 } |
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439 void set_current_virtual_space(VirtualSpaceNode* v) { |
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440 _current_virtual_space = v; |
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441 } |
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442 |
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443 void link_vs(VirtualSpaceNode* new_entry, size_t vs_word_size); |
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444 |
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445 // Get another virtual space and add it to the list. This |
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446 // is typically prompted by a failed attempt to allocate a chunk |
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447 // and is typically followed by the allocation of a chunk. |
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448 bool grow_vs(size_t vs_word_size); |
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449 |
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450 public: |
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451 VirtualSpaceList(size_t word_size); |
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452 VirtualSpaceList(ReservedSpace rs); |
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453 |
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454 size_t free_bytes(); |
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455 |
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456 Metachunk* get_new_chunk(size_t word_size, |
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457 size_t grow_chunks_by_words, |
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458 size_t medium_chunk_bunch); |
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459 |
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460 // Get the first chunk for a Metaspace. Used for |
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461 // special cases such as the boot class loader, reflection |
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462 // class loader and anonymous class loader. |
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463 Metachunk* get_initialization_chunk(size_t word_size, size_t chunk_bunch); |
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464 |
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465 VirtualSpaceNode* current_virtual_space() { |
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466 return _current_virtual_space; |
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467 } |
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468 |
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469 ChunkManager* chunk_manager() { return &_chunk_manager; } |
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470 bool is_class() const { return _is_class; } |
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471 |
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472 // Allocate the first virtualspace. |
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473 void initialize(size_t word_size); |
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474 |
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475 size_t virtual_space_total() { return _virtual_space_total; } |
10175 | 476 |
477 void inc_virtual_space_total(size_t v); | |
478 void dec_virtual_space_total(size_t v); | |
479 void inc_virtual_space_count(); | |
480 void dec_virtual_space_count(); | |
481 | |
482 // Unlink empty VirtualSpaceNodes and free it. | |
483 void purge(); | |
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484 |
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485 // Used and capacity in the entire list of virtual spaces. |
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486 // These are global values shared by all Metaspaces |
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487 size_t capacity_words_sum(); |
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488 size_t capacity_bytes_sum() { return capacity_words_sum() * BytesPerWord; } |
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489 size_t used_words_sum(); |
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490 size_t used_bytes_sum() { return used_words_sum() * BytesPerWord; } |
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491 |
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492 bool contains(const void *ptr); |
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493 |
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494 void print_on(outputStream* st) const; |
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495 |
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496 class VirtualSpaceListIterator : public StackObj { |
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497 VirtualSpaceNode* _virtual_spaces; |
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498 public: |
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499 VirtualSpaceListIterator(VirtualSpaceNode* virtual_spaces) : |
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500 _virtual_spaces(virtual_spaces) {} |
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501 |
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502 bool repeat() { |
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503 return _virtual_spaces != NULL; |
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504 } |
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505 |
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506 VirtualSpaceNode* get_next() { |
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507 VirtualSpaceNode* result = _virtual_spaces; |
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508 if (_virtual_spaces != NULL) { |
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509 _virtual_spaces = _virtual_spaces->next(); |
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510 } |
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511 return result; |
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512 } |
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513 }; |
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514 }; |
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515 |
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516 class Metadebug : AllStatic { |
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517 // Debugging support for Metaspaces |
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518 static int _deallocate_block_a_lot_count; |
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519 static int _deallocate_chunk_a_lot_count; |
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520 static int _allocation_fail_alot_count; |
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521 |
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522 public: |
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523 static int deallocate_block_a_lot_count() { |
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524 return _deallocate_block_a_lot_count; |
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525 } |
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526 static void set_deallocate_block_a_lot_count(int v) { |
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527 _deallocate_block_a_lot_count = v; |
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528 } |
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529 static void inc_deallocate_block_a_lot_count() { |
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530 _deallocate_block_a_lot_count++; |
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531 } |
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532 static int deallocate_chunk_a_lot_count() { |
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533 return _deallocate_chunk_a_lot_count; |
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534 } |
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535 static void reset_deallocate_chunk_a_lot_count() { |
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536 _deallocate_chunk_a_lot_count = 1; |
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537 } |
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538 static void inc_deallocate_chunk_a_lot_count() { |
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539 _deallocate_chunk_a_lot_count++; |
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540 } |
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541 |
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542 static void init_allocation_fail_alot_count(); |
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543 #ifdef ASSERT |
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544 static bool test_metadata_failure(); |
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545 #endif |
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546 |
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547 static void deallocate_chunk_a_lot(SpaceManager* sm, |
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548 size_t chunk_word_size); |
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549 static void deallocate_block_a_lot(SpaceManager* sm, |
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550 size_t chunk_word_size); |
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551 |
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552 }; |
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553 |
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554 int Metadebug::_deallocate_block_a_lot_count = 0; |
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555 int Metadebug::_deallocate_chunk_a_lot_count = 0; |
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556 int Metadebug::_allocation_fail_alot_count = 0; |
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557 |
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558 // SpaceManager - used by Metaspace to handle allocations |
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559 class SpaceManager : public CHeapObj<mtClass> { |
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560 friend class Metaspace; |
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561 friend class Metadebug; |
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562 |
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563 private: |
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564 |
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565 // protects allocations and contains. |
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566 Mutex* const _lock; |
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567 |
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568 // Type of metadata allocated. |
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569 Metaspace::MetadataType _mdtype; |
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570 |
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571 // Chunk related size |
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572 size_t _medium_chunk_bunch; |
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573 |
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574 // List of chunks in use by this SpaceManager. Allocations |
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575 // are done from the current chunk. The list is used for deallocating |
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576 // chunks when the SpaceManager is freed. |
6885 | 577 Metachunk* _chunks_in_use[NumberOfInUseLists]; |
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578 Metachunk* _current_chunk; |
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579 |
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580 // Virtual space where allocation comes from. |
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581 VirtualSpaceList* _vs_list; |
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582 |
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583 // Number of small chunks to allocate to a manager |
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584 // If class space manager, small chunks are unlimited |
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585 static uint const _small_chunk_limit; |
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586 |
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587 // Sum of all space in allocated chunks |
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588 size_t _allocated_blocks_words; |
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589 |
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590 // Sum of all allocated chunks |
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591 size_t _allocated_chunks_words; |
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592 size_t _allocated_chunks_count; |
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593 |
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594 // Free lists of blocks are per SpaceManager since they |
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595 // are assumed to be in chunks in use by the SpaceManager |
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596 // and all chunks in use by a SpaceManager are freed when |
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597 // the class loader using the SpaceManager is collected. |
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598 BlockFreelist _block_freelists; |
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599 |
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600 // protects virtualspace and chunk expansions |
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601 static const char* _expand_lock_name; |
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602 static const int _expand_lock_rank; |
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603 static Mutex* const _expand_lock; |
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604 |
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605 private: |
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606 // Accessors |
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607 Metachunk* chunks_in_use(ChunkIndex index) const { return _chunks_in_use[index]; } |
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608 void set_chunks_in_use(ChunkIndex index, Metachunk* v) { _chunks_in_use[index] = v; } |
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609 |
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610 BlockFreelist* block_freelists() const { |
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611 return (BlockFreelist*) &_block_freelists; |
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612 } |
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613 |
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614 Metaspace::MetadataType mdtype() { return _mdtype; } |
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615 VirtualSpaceList* vs_list() const { return _vs_list; } |
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616 |
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617 Metachunk* current_chunk() const { return _current_chunk; } |
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618 void set_current_chunk(Metachunk* v) { |
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619 _current_chunk = v; |
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620 } |
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621 |
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622 Metachunk* find_current_chunk(size_t word_size); |
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623 |
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624 // Add chunk to the list of chunks in use |
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625 void add_chunk(Metachunk* v, bool make_current); |
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626 |
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627 Mutex* lock() const { return _lock; } |
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628 |
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629 const char* chunk_size_name(ChunkIndex index) const; |
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630 |
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631 protected: |
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632 void initialize(); |
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633 |
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634 public: |
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635 SpaceManager(Metaspace::MetadataType mdtype, |
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636 Mutex* lock, |
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637 VirtualSpaceList* vs_list); |
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638 ~SpaceManager(); |
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639 |
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640 enum ChunkMultiples { |
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641 MediumChunkMultiple = 4 |
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642 }; |
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643 |
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644 // Accessors |
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645 size_t specialized_chunk_size() { return SpecializedChunk; } |
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646 size_t small_chunk_size() { return (size_t) vs_list()->is_class() ? ClassSmallChunk : SmallChunk; } |
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647 size_t medium_chunk_size() { return (size_t) vs_list()->is_class() ? ClassMediumChunk : MediumChunk; } |
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648 size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; } |
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649 |
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650 size_t allocated_blocks_words() const { return _allocated_blocks_words; } |
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651 size_t allocated_blocks_bytes() const { return _allocated_blocks_words * BytesPerWord; } |
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652 size_t allocated_chunks_words() const { return _allocated_chunks_words; } |
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653 size_t allocated_chunks_count() const { return _allocated_chunks_count; } |
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654 |
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655 bool is_humongous(size_t word_size) { return word_size > medium_chunk_size(); } |
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656 |
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657 static Mutex* expand_lock() { return _expand_lock; } |
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658 |
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659 // Increment the per Metaspace and global running sums for Metachunks |
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660 // by the given size. This is used when a Metachunk to added to |
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661 // the in-use list. |
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662 void inc_size_metrics(size_t words); |
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663 // Increment the per Metaspace and global running sums Metablocks by the given |
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664 // size. This is used when a Metablock is allocated. |
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665 void inc_used_metrics(size_t words); |
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666 // Delete the portion of the running sums for this SpaceManager. That is, |
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667 // the globals running sums for the Metachunks and Metablocks are |
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668 // decremented for all the Metachunks in-use by this SpaceManager. |
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669 void dec_total_from_size_metrics(); |
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670 |
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671 // Set the sizes for the initial chunks. |
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672 void get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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673 size_t* chunk_word_size, |
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674 size_t* class_chunk_word_size); |
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675 |
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676 size_t sum_capacity_in_chunks_in_use() const; |
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677 size_t sum_used_in_chunks_in_use() const; |
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678 size_t sum_free_in_chunks_in_use() const; |
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679 size_t sum_waste_in_chunks_in_use() const; |
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680 size_t sum_waste_in_chunks_in_use(ChunkIndex index ) const; |
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681 |
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682 size_t sum_count_in_chunks_in_use(); |
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683 size_t sum_count_in_chunks_in_use(ChunkIndex i); |
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684 |
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685 Metachunk* get_new_chunk(size_t word_size, size_t grow_chunks_by_words); |
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686 |
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687 // Block allocation and deallocation. |
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688 // Allocates a block from the current chunk |
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689 MetaWord* allocate(size_t word_size); |
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690 |
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691 // Helper for allocations |
6885 | 692 MetaWord* allocate_work(size_t word_size); |
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693 |
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694 // Returns a block to the per manager freelist |
6885 | 695 void deallocate(MetaWord* p, size_t word_size); |
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696 |
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697 // Based on the allocation size and a minimum chunk size, |
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698 // returned chunk size (for expanding space for chunk allocation). |
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699 size_t calc_chunk_size(size_t allocation_word_size); |
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700 |
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701 // Called when an allocation from the current chunk fails. |
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702 // Gets a new chunk (may require getting a new virtual space), |
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703 // and allocates from that chunk. |
6885 | 704 MetaWord* grow_and_allocate(size_t word_size); |
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705 |
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706 // debugging support. |
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707 |
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708 void dump(outputStream* const out) const; |
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709 void print_on(outputStream* st) const; |
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710 void locked_print_chunks_in_use_on(outputStream* st) const; |
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711 |
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712 void verify(); |
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713 void verify_chunk_size(Metachunk* chunk); |
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714 NOT_PRODUCT(void mangle_freed_chunks();) |
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715 #ifdef ASSERT |
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716 void verify_allocated_blocks_words(); |
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717 #endif |
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718 |
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719 size_t get_raw_word_size(size_t word_size) { |
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720 // If only the dictionary is going to be used (i.e., no |
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721 // indexed free list), then there is a minimum size requirement. |
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722 // MinChunkSize is a placeholder for the real minimum size JJJ |
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723 size_t byte_size = word_size * BytesPerWord; |
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724 |
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725 size_t byte_size_with_overhead = byte_size + Metablock::overhead(); |
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726 |
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727 size_t raw_bytes_size = MAX2(byte_size_with_overhead, |
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728 Metablock::min_block_byte_size()); |
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729 raw_bytes_size = ARENA_ALIGN(raw_bytes_size); |
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730 size_t raw_word_size = raw_bytes_size / BytesPerWord; |
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731 assert(raw_word_size * BytesPerWord == raw_bytes_size, "Size problem"); |
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732 |
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733 return raw_word_size; |
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734 } |
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735 }; |
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736 |
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737 uint const SpaceManager::_small_chunk_limit = 4; |
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738 |
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739 const char* SpaceManager::_expand_lock_name = |
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740 "SpaceManager chunk allocation lock"; |
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741 const int SpaceManager::_expand_lock_rank = Monitor::leaf - 1; |
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742 Mutex* const SpaceManager::_expand_lock = |
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743 new Mutex(SpaceManager::_expand_lock_rank, |
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744 SpaceManager::_expand_lock_name, |
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745 Mutex::_allow_vm_block_flag); |
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746 |
10175 | 747 void VirtualSpaceNode::inc_container_count() { |
748 assert_lock_strong(SpaceManager::expand_lock()); | |
749 _container_count++; | |
750 assert(_container_count == container_count_slow(), | |
751 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
752 "container_count_slow() " SIZE_FORMAT, | |
753 _container_count, container_count_slow())); | |
754 } | |
755 | |
756 void VirtualSpaceNode::dec_container_count() { | |
757 assert_lock_strong(SpaceManager::expand_lock()); | |
758 _container_count--; | |
759 } | |
760 | |
761 #ifdef ASSERT | |
762 void VirtualSpaceNode::verify_container_count() { | |
763 assert(_container_count == container_count_slow(), | |
764 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
765 "container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow())); | |
766 } | |
767 #endif | |
768 | |
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769 // BlockFreelist methods |
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770 |
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771 BlockFreelist::BlockFreelist() : _dictionary(NULL) {} |
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772 |
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773 BlockFreelist::~BlockFreelist() { |
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774 if (_dictionary != NULL) { |
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775 if (Verbose && TraceMetadataChunkAllocation) { |
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776 _dictionary->print_free_lists(gclog_or_tty); |
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777 } |
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778 delete _dictionary; |
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779 } |
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780 } |
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781 |
6885 | 782 Metablock* BlockFreelist::initialize_free_chunk(MetaWord* p, size_t word_size) { |
783 Metablock* block = (Metablock*) p; | |
784 block->set_word_size(word_size); | |
785 block->set_prev(NULL); | |
786 block->set_next(NULL); | |
787 | |
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788 return block; |
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789 } |
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790 |
6885 | 791 void BlockFreelist::return_block(MetaWord* p, size_t word_size) { |
792 Metablock* free_chunk = initialize_free_chunk(p, word_size); | |
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793 if (dictionary() == NULL) { |
6885 | 794 _dictionary = new BlockTreeDictionary(); |
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795 } |
6885 | 796 dictionary()->return_chunk(free_chunk); |
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797 } |
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798 |
6885 | 799 MetaWord* BlockFreelist::get_block(size_t word_size) { |
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800 if (dictionary() == NULL) { |
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801 return NULL; |
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802 } |
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803 |
6885 | 804 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
805 // Dark matter. Too small for dictionary. | |
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806 return NULL; |
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807 } |
6885 | 808 |
809 Metablock* free_block = | |
810 dictionary()->get_chunk(word_size, FreeBlockDictionary<Metablock>::exactly); | |
811 if (free_block == NULL) { | |
812 return NULL; | |
813 } | |
814 | |
815 return (MetaWord*) free_block; | |
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816 } |
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817 |
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818 void BlockFreelist::print_on(outputStream* st) const { |
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819 if (dictionary() == NULL) { |
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820 return; |
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821 } |
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822 dictionary()->print_free_lists(st); |
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823 } |
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824 |
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825 // VirtualSpaceNode methods |
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826 |
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827 VirtualSpaceNode::~VirtualSpaceNode() { |
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828 _rs.release(); |
10175 | 829 #ifdef ASSERT |
830 size_t word_size = sizeof(*this) / BytesPerWord; | |
831 Copy::fill_to_words((HeapWord*) this, word_size, 0xf1f1f1f1); | |
832 #endif | |
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833 } |
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834 |
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835 size_t VirtualSpaceNode::used_words_in_vs() const { |
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836 return pointer_delta(top(), bottom(), sizeof(MetaWord)); |
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837 } |
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838 |
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839 // Space committed in the VirtualSpace |
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840 size_t VirtualSpaceNode::capacity_words_in_vs() const { |
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841 return pointer_delta(end(), bottom(), sizeof(MetaWord)); |
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842 } |
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843 |
10183
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844 size_t VirtualSpaceNode::free_words_in_vs() const { |
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845 return pointer_delta(end(), top(), sizeof(MetaWord)); |
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846 } |
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847 |
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848 // Allocates the chunk from the virtual space only. |
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849 // This interface is also used internally for debugging. Not all |
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850 // chunks removed here are necessarily used for allocation. |
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851 Metachunk* VirtualSpaceNode::take_from_committed(size_t chunk_word_size) { |
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852 // Bottom of the new chunk |
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853 MetaWord* chunk_limit = top(); |
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854 assert(chunk_limit != NULL, "Not safe to call this method"); |
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855 |
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856 if (!is_available(chunk_word_size)) { |
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857 if (TraceMetadataChunkAllocation) { |
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858 tty->print("VirtualSpaceNode::take_from_committed() not available %d words ", chunk_word_size); |
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859 // Dump some information about the virtual space that is nearly full |
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860 print_on(tty); |
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861 } |
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862 return NULL; |
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863 } |
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864 |
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865 // Take the space (bump top on the current virtual space). |
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866 inc_top(chunk_word_size); |
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867 |
10175 | 868 // Initialize the chunk |
869 Metachunk* result = ::new (chunk_limit) Metachunk(chunk_word_size, this); | |
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870 return result; |
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871 } |
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872 |
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873 |
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874 // Expand the virtual space (commit more of the reserved space) |
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875 bool VirtualSpaceNode::expand_by(size_t words, bool pre_touch) { |
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876 size_t bytes = words * BytesPerWord; |
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877 bool result = virtual_space()->expand_by(bytes, pre_touch); |
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878 if (TraceMetavirtualspaceAllocation && !result) { |
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879 gclog_or_tty->print_cr("VirtualSpaceNode::expand_by() failed " |
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880 "for byte size " SIZE_FORMAT, bytes); |
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881 virtual_space()->print(); |
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882 } |
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883 return result; |
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884 } |
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885 |
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886 // Shrink the virtual space (commit more of the reserved space) |
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887 bool VirtualSpaceNode::shrink_by(size_t words) { |
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888 size_t bytes = words * BytesPerWord; |
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889 virtual_space()->shrink_by(bytes); |
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890 return true; |
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891 } |
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892 |
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893 // Add another chunk to the chunk list. |
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894 |
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895 Metachunk* VirtualSpaceNode::get_chunk_vs(size_t chunk_word_size) { |
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896 assert_lock_strong(SpaceManager::expand_lock()); |
10175 | 897 Metachunk* result = take_from_committed(chunk_word_size); |
898 if (result != NULL) { | |
899 inc_container_count(); | |
900 } | |
901 return result; | |
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902 } |
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903 |
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904 Metachunk* VirtualSpaceNode::get_chunk_vs_with_expand(size_t chunk_word_size) { |
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905 assert_lock_strong(SpaceManager::expand_lock()); |
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906 |
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907 Metachunk* new_chunk = get_chunk_vs(chunk_word_size); |
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908 |
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909 if (new_chunk == NULL) { |
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910 // Only a small part of the virtualspace is committed when first |
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911 // allocated so committing more here can be expected. |
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912 size_t page_size_words = os::vm_page_size() / BytesPerWord; |
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913 size_t aligned_expand_vs_by_words = align_size_up(chunk_word_size, |
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914 page_size_words); |
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915 expand_by(aligned_expand_vs_by_words, false); |
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916 new_chunk = get_chunk_vs(chunk_word_size); |
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917 } |
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918 return new_chunk; |
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919 } |
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920 |
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921 bool VirtualSpaceNode::initialize() { |
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922 |
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923 if (!_rs.is_reserved()) { |
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924 return false; |
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925 } |
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926 |
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927 // An allocation out of this Virtualspace that is larger |
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928 // than an initial commit size can waste that initial committed |
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929 // space. |
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930 size_t committed_byte_size = 0; |
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931 bool result = virtual_space()->initialize(_rs, committed_byte_size); |
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932 if (result) { |
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933 set_top((MetaWord*)virtual_space()->low()); |
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934 set_reserved(MemRegion((HeapWord*)_rs.base(), |
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935 (HeapWord*)(_rs.base() + _rs.size()))); |
6726
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936 |
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937 assert(reserved()->start() == (HeapWord*) _rs.base(), |
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938 err_msg("Reserved start was not set properly " PTR_FORMAT |
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939 " != " PTR_FORMAT, reserved()->start(), _rs.base())); |
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940 assert(reserved()->word_size() == _rs.size() / BytesPerWord, |
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941 err_msg("Reserved size was not set properly " SIZE_FORMAT |
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942 " != " SIZE_FORMAT, reserved()->word_size(), |
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943 _rs.size() / BytesPerWord)); |
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944 } |
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945 |
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946 return result; |
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947 } |
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948 |
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949 void VirtualSpaceNode::print_on(outputStream* st) const { |
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950 size_t used = used_words_in_vs(); |
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951 size_t capacity = capacity_words_in_vs(); |
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952 VirtualSpace* vs = virtual_space(); |
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953 st->print_cr(" space @ " PTR_FORMAT " " SIZE_FORMAT "K, %3d%% used " |
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954 "[" PTR_FORMAT ", " PTR_FORMAT ", " |
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955 PTR_FORMAT ", " PTR_FORMAT ")", |
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956 vs, capacity / K, |
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957 capacity == 0 ? 0 : used * 100 / capacity, |
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958 bottom(), top(), end(), |
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959 vs->high_boundary()); |
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960 } |
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961 |
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962 #ifdef ASSERT |
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963 void VirtualSpaceNode::mangle() { |
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964 size_t word_size = capacity_words_in_vs(); |
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965 Copy::fill_to_words((HeapWord*) low(), word_size, 0xf1f1f1f1); |
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966 } |
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967 #endif // ASSERT |
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968 |
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969 // VirtualSpaceList methods |
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970 // Space allocated from the VirtualSpace |
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971 |
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972 VirtualSpaceList::~VirtualSpaceList() { |
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973 VirtualSpaceListIterator iter(virtual_space_list()); |
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974 while (iter.repeat()) { |
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975 VirtualSpaceNode* vsl = iter.get_next(); |
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976 delete vsl; |
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977 } |
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978 } |
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979 |
10175 | 980 void VirtualSpaceList::inc_virtual_space_total(size_t v) { |
981 assert_lock_strong(SpaceManager::expand_lock()); | |
982 _virtual_space_total = _virtual_space_total + v; | |
983 } | |
984 void VirtualSpaceList::dec_virtual_space_total(size_t v) { | |
985 assert_lock_strong(SpaceManager::expand_lock()); | |
986 _virtual_space_total = _virtual_space_total - v; | |
987 } | |
988 | |
989 void VirtualSpaceList::inc_virtual_space_count() { | |
990 assert_lock_strong(SpaceManager::expand_lock()); | |
991 _virtual_space_count++; | |
992 } | |
993 void VirtualSpaceList::dec_virtual_space_count() { | |
994 assert_lock_strong(SpaceManager::expand_lock()); | |
995 _virtual_space_count--; | |
996 } | |
997 | |
998 void ChunkManager::remove_chunk(Metachunk* chunk) { | |
999 size_t word_size = chunk->word_size(); | |
1000 ChunkIndex index = list_index(word_size); | |
1001 if (index != HumongousIndex) { | |
1002 free_chunks(index)->remove_chunk(chunk); | |
1003 } else { | |
1004 humongous_dictionary()->remove_chunk(chunk); | |
1005 } | |
1006 | |
1007 // Chunk is being removed from the chunks free list. | |
1008 dec_free_chunks_total(chunk->capacity_word_size()); | |
1009 } | |
1010 | |
1011 // Walk the list of VirtualSpaceNodes and delete | |
1012 // nodes with a 0 container_count. Remove Metachunks in | |
1013 // the node from their respective freelists. | |
1014 void VirtualSpaceList::purge() { | |
1015 assert_lock_strong(SpaceManager::expand_lock()); | |
1016 // Don't use a VirtualSpaceListIterator because this | |
1017 // list is being changed and a straightforward use of an iterator is not safe. | |
1018 VirtualSpaceNode* purged_vsl = NULL; | |
1019 VirtualSpaceNode* prev_vsl = virtual_space_list(); | |
1020 VirtualSpaceNode* next_vsl = prev_vsl; | |
1021 while (next_vsl != NULL) { | |
1022 VirtualSpaceNode* vsl = next_vsl; | |
1023 next_vsl = vsl->next(); | |
1024 // Don't free the current virtual space since it will likely | |
1025 // be needed soon. | |
1026 if (vsl->container_count() == 0 && vsl != current_virtual_space()) { | |
1027 // Unlink it from the list | |
1028 if (prev_vsl == vsl) { | |
1029 // This is the case of the current note being the first note. | |
1030 assert(vsl == virtual_space_list(), "Expected to be the first note"); | |
1031 set_virtual_space_list(vsl->next()); | |
1032 } else { | |
1033 prev_vsl->set_next(vsl->next()); | |
1034 } | |
1035 | |
1036 vsl->purge(chunk_manager()); | |
1037 dec_virtual_space_total(vsl->reserved()->word_size()); | |
1038 dec_virtual_space_count(); | |
1039 purged_vsl = vsl; | |
1040 delete vsl; | |
1041 } else { | |
1042 prev_vsl = vsl; | |
1043 } | |
1044 } | |
1045 #ifdef ASSERT | |
1046 if (purged_vsl != NULL) { | |
1047 // List should be stable enough to use an iterator here. | |
1048 VirtualSpaceListIterator iter(virtual_space_list()); | |
1049 while (iter.repeat()) { | |
1050 VirtualSpaceNode* vsl = iter.get_next(); | |
1051 assert(vsl != purged_vsl, "Purge of vsl failed"); | |
1052 } | |
1053 } | |
1054 #endif | |
1055 } | |
1056 | |
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1057 size_t VirtualSpaceList::used_words_sum() { |
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1058 size_t allocated_by_vs = 0; |
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1059 VirtualSpaceListIterator iter(virtual_space_list()); |
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1060 while (iter.repeat()) { |
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1061 VirtualSpaceNode* vsl = iter.get_next(); |
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1062 // Sum used region [bottom, top) in each virtualspace |
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1063 allocated_by_vs += vsl->used_words_in_vs(); |
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1064 } |
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1065 assert(allocated_by_vs >= chunk_manager()->free_chunks_total(), |
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1066 err_msg("Total in free chunks " SIZE_FORMAT |
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1067 " greater than total from virtual_spaces " SIZE_FORMAT, |
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1068 allocated_by_vs, chunk_manager()->free_chunks_total())); |
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1069 size_t used = |
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1070 allocated_by_vs - chunk_manager()->free_chunks_total(); |
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1071 return used; |
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1072 } |
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1073 |
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1074 // Space available in all MetadataVirtualspaces allocated |
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1075 // for metadata. This is the upper limit on the capacity |
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1076 // of chunks allocated out of all the MetadataVirtualspaces. |
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1077 size_t VirtualSpaceList::capacity_words_sum() { |
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1078 size_t capacity = 0; |
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1079 VirtualSpaceListIterator iter(virtual_space_list()); |
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1080 while (iter.repeat()) { |
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1081 VirtualSpaceNode* vsl = iter.get_next(); |
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1082 capacity += vsl->capacity_words_in_vs(); |
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1083 } |
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1084 return capacity; |
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1085 } |
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1086 |
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1087 VirtualSpaceList::VirtualSpaceList(size_t word_size ) : |
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1088 _is_class(false), |
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1089 _virtual_space_list(NULL), |
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1090 _current_virtual_space(NULL), |
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1091 _virtual_space_total(0), |
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1092 _virtual_space_count(0) { |
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1093 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1094 Mutex::_no_safepoint_check_flag); |
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1095 bool initialization_succeeded = grow_vs(word_size); |
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1096 |
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1097 _chunk_manager.free_chunks(SpecializedIndex)->set_size(SpecializedChunk); |
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1098 _chunk_manager.free_chunks(SmallIndex)->set_size(SmallChunk); |
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1099 _chunk_manager.free_chunks(MediumIndex)->set_size(MediumChunk); |
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1100 assert(initialization_succeeded, |
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1101 " VirtualSpaceList initialization should not fail"); |
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1102 } |
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1103 |
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1104 VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) : |
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1105 _is_class(true), |
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1106 _virtual_space_list(NULL), |
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1107 _current_virtual_space(NULL), |
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1108 _virtual_space_total(0), |
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1109 _virtual_space_count(0) { |
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1110 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1111 Mutex::_no_safepoint_check_flag); |
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1112 VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs); |
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1113 bool succeeded = class_entry->initialize(); |
10101
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1114 _chunk_manager.free_chunks(SpecializedIndex)->set_size(SpecializedChunk); |
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1115 _chunk_manager.free_chunks(SmallIndex)->set_size(ClassSmallChunk); |
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1116 _chunk_manager.free_chunks(MediumIndex)->set_size(ClassMediumChunk); |
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1117 assert(succeeded, " VirtualSpaceList initialization should not fail"); |
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1118 link_vs(class_entry, rs.size()/BytesPerWord); |
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1119 } |
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1120 |
10183
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1121 size_t VirtualSpaceList::free_bytes() { |
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1122 return virtual_space_list()->free_words_in_vs() * BytesPerWord; |
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1123 } |
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1124 |
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1125 // Allocate another meta virtual space and add it to the list. |
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1126 bool VirtualSpaceList::grow_vs(size_t vs_word_size) { |
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1127 assert_lock_strong(SpaceManager::expand_lock()); |
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1128 if (vs_word_size == 0) { |
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1129 return false; |
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1130 } |
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1131 // Reserve the space |
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1132 size_t vs_byte_size = vs_word_size * BytesPerWord; |
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1133 assert(vs_byte_size % os::vm_page_size() == 0, "Not aligned"); |
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1134 |
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1135 // Allocate the meta virtual space and initialize it. |
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1136 VirtualSpaceNode* new_entry = new VirtualSpaceNode(vs_byte_size); |
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1137 if (!new_entry->initialize()) { |
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1138 delete new_entry; |
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1139 return false; |
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1140 } else { |
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1141 // ensure lock-free iteration sees fully initialized node |
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1142 OrderAccess::storestore(); |
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1143 link_vs(new_entry, vs_word_size); |
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1144 return true; |
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1145 } |
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1146 } |
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1147 |
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1148 void VirtualSpaceList::link_vs(VirtualSpaceNode* new_entry, size_t vs_word_size) { |
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1149 if (virtual_space_list() == NULL) { |
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1150 set_virtual_space_list(new_entry); |
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1151 } else { |
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1152 current_virtual_space()->set_next(new_entry); |
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1153 } |
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1154 set_current_virtual_space(new_entry); |
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1155 inc_virtual_space_total(vs_word_size); |
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1156 inc_virtual_space_count(); |
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1157 #ifdef ASSERT |
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1158 new_entry->mangle(); |
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1159 #endif |
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1160 if (TraceMetavirtualspaceAllocation && Verbose) { |
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1161 VirtualSpaceNode* vsl = current_virtual_space(); |
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1162 vsl->print_on(tty); |
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1163 } |
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1164 } |
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1165 |
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1166 Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size, |
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1167 size_t grow_chunks_by_words, |
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1168 size_t medium_chunk_bunch) { |
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1169 |
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1170 // Get a chunk from the chunk freelist |
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1171 Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words); |
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1172 |
10175 | 1173 if (next != NULL) { |
1174 next->container()->inc_container_count(); | |
1175 } else { | |
1176 // Allocate a chunk out of the current virtual space. | |
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1177 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1178 } |
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1179 |
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1180 if (next == NULL) { |
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1181 // Not enough room in current virtual space. Try to commit |
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1182 // more space. |
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1183 size_t expand_vs_by_words = MAX2(medium_chunk_bunch, |
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1184 grow_chunks_by_words); |
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1185 size_t page_size_words = os::vm_page_size() / BytesPerWord; |
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1186 size_t aligned_expand_vs_by_words = align_size_up(expand_vs_by_words, |
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1187 page_size_words); |
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1188 bool vs_expanded = |
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1189 current_virtual_space()->expand_by(aligned_expand_vs_by_words, false); |
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1190 if (!vs_expanded) { |
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1191 // Should the capacity of the metaspaces be expanded for |
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1192 // this allocation? If it's the virtual space for classes and is |
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1193 // being used for CompressedHeaders, don't allocate a new virtualspace. |
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1194 if (can_grow() && MetaspaceGC::should_expand(this, word_size)) { |
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1195 // Get another virtual space. |
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1196 size_t grow_vs_words = |
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1197 MAX2((size_t)VirtualSpaceSize, aligned_expand_vs_by_words); |
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1198 if (grow_vs(grow_vs_words)) { |
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1199 // Got it. It's on the list now. Get a chunk from it. |
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1200 next = current_virtual_space()->get_chunk_vs_with_expand(grow_chunks_by_words); |
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1201 } |
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1202 } else { |
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1203 // Allocation will fail and induce a GC |
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1204 if (TraceMetadataChunkAllocation && Verbose) { |
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1205 gclog_or_tty->print_cr("VirtualSpaceList::get_new_chunk():" |
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1206 " Fail instead of expand the metaspace"); |
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1207 } |
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1208 } |
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1209 } else { |
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1210 // The virtual space expanded, get a new chunk |
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1211 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1212 assert(next != NULL, "Just expanded, should succeed"); |
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1213 } |
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1214 } |
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1215 |
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1216 assert(next == NULL || (next->next() == NULL && next->prev() == NULL), |
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1217 "New chunk is still on some list"); |
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1218 return next; |
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1219 } |
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1220 |
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1221 Metachunk* VirtualSpaceList::get_initialization_chunk(size_t chunk_word_size, |
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1222 size_t chunk_bunch) { |
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1223 // Get a chunk from the chunk freelist |
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1224 Metachunk* new_chunk = get_new_chunk(chunk_word_size, |
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1225 chunk_word_size, |
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1226 chunk_bunch); |
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1227 return new_chunk; |
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1228 } |
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1229 |
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1230 void VirtualSpaceList::print_on(outputStream* st) const { |
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1231 if (TraceMetadataChunkAllocation && Verbose) { |
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1232 VirtualSpaceListIterator iter(virtual_space_list()); |
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1233 while (iter.repeat()) { |
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1234 VirtualSpaceNode* node = iter.get_next(); |
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1235 node->print_on(st); |
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1236 } |
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1237 } |
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1238 } |
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1239 |
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1240 bool VirtualSpaceList::contains(const void *ptr) { |
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1241 VirtualSpaceNode* list = virtual_space_list(); |
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1242 VirtualSpaceListIterator iter(list); |
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1243 while (iter.repeat()) { |
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1244 VirtualSpaceNode* node = iter.get_next(); |
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1245 if (node->reserved()->contains(ptr)) { |
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1246 return true; |
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1247 } |
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1248 } |
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1249 return false; |
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1250 } |
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1251 |
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1252 |
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1253 // MetaspaceGC methods |
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1254 |
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1255 // VM_CollectForMetadataAllocation is the vm operation used to GC. |
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1256 // Within the VM operation after the GC the attempt to allocate the metadata |
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1257 // should succeed. If the GC did not free enough space for the metaspace |
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1258 // allocation, the HWM is increased so that another virtualspace will be |
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1259 // allocated for the metadata. With perm gen the increase in the perm |
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1260 // gen had bounds, MinMetaspaceExpansion and MaxMetaspaceExpansion. The |
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1261 // metaspace policy uses those as the small and large steps for the HWM. |
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1262 // |
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1263 // After the GC the compute_new_size() for MetaspaceGC is called to |
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1264 // resize the capacity of the metaspaces. The current implementation |
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1265 // is based on the flags MinMetaspaceFreeRatio and MaxMetaspaceFreeRatio used |
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1266 // to resize the Java heap by some GC's. New flags can be implemented |
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1267 // if really needed. MinMetaspaceFreeRatio is used to calculate how much |
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1268 // free space is desirable in the metaspace capacity to decide how much |
8040
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8005452: NPG: Create new flags for Metaspace resizing policy
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1269 // to increase the HWM. MaxMetaspaceFreeRatio is used to decide how much |
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1270 // free space is desirable in the metaspace capacity before decreasing |
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1271 // the HWM. |
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1272 |
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1273 // Calculate the amount to increase the high water mark (HWM). |
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1274 // Increase by a minimum amount (MinMetaspaceExpansion) so that |
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1275 // another expansion is not requested too soon. If that is not |
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1276 // enough to satisfy the allocation (i.e. big enough for a word_size |
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1277 // allocation), increase by MaxMetaspaceExpansion. If that is still |
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1278 // not enough, expand by the size of the allocation (word_size) plus |
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1279 // some. |
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1280 size_t MetaspaceGC::delta_capacity_until_GC(size_t word_size) { |
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1281 size_t before_inc = MetaspaceGC::capacity_until_GC(); |
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1282 size_t min_delta_words = MinMetaspaceExpansion / BytesPerWord; |
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1283 size_t max_delta_words = MaxMetaspaceExpansion / BytesPerWord; |
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1284 size_t page_size_words = os::vm_page_size() / BytesPerWord; |
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1285 size_t size_delta_words = align_size_up(word_size, page_size_words); |
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1286 size_t delta_words = MAX2(size_delta_words, min_delta_words); |
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1287 if (delta_words > min_delta_words) { |
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1288 // Don't want to hit the high water mark on the next |
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1289 // allocation so make the delta greater than just enough |
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1290 // for this allocation. |
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1291 delta_words = MAX2(delta_words, max_delta_words); |
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1292 if (delta_words > max_delta_words) { |
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1293 // This allocation is large but the next ones are probably not |
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1294 // so increase by the minimum. |
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1295 delta_words = delta_words + min_delta_words; |
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1296 } |
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1297 } |
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1298 return delta_words; |
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1299 } |
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1300 |
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1301 bool MetaspaceGC::should_expand(VirtualSpaceList* vsl, size_t word_size) { |
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1302 |
8790
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|
1303 // If the user wants a limit, impose one. |
11064
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1304 // The reason for someone using this flag is to limit reserved space. So |
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1305 // for non-class virtual space, compare against virtual spaces that are reserved. |
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1306 // For class virtual space, we only compare against the committed space, not |
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1307 // reserved space, because this is a larger space prereserved for compressed |
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1308 // class pointers. |
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1309 if (!FLAG_IS_DEFAULT(MaxMetaspaceSize)) { |
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1310 size_t real_allocated = Metaspace::space_list()->virtual_space_total() + |
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1311 MetaspaceAux::allocated_capacity_bytes(Metaspace::ClassType); |
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1312 if (real_allocated >= MaxMetaspaceSize) { |
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1313 return false; |
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1314 } |
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1315 } |
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1316 |
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1317 // Class virtual space should always be expanded. Call GC for the other |
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1318 // metadata virtual space. |
12056
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1319 if (Metaspace::using_class_space() && |
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1320 (vsl == Metaspace::class_space_list())) return true; |
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1321 |
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1322 // If this is part of an allocation after a GC, expand |
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1323 // unconditionally. |
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1324 if (MetaspaceGC::expand_after_GC()) { |
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1325 return true; |
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1326 } |
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1327 |
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1328 |
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1329 // If the capacity is below the minimum capacity, allow the |
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1330 // expansion. Also set the high-water-mark (capacity_until_GC) |
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1331 // to that minimum capacity so that a GC will not be induced |
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1332 // until that minimum capacity is exceeded. |
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1333 size_t committed_capacity_bytes = MetaspaceAux::allocated_capacity_bytes(); |
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1334 size_t metaspace_size_bytes = MetaspaceSize; |
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1335 if (committed_capacity_bytes < metaspace_size_bytes || |
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1336 capacity_until_GC() == 0) { |
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1337 set_capacity_until_GC(metaspace_size_bytes); |
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1338 return true; |
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1339 } else { |
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1340 if (committed_capacity_bytes < capacity_until_GC()) { |
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1341 return true; |
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1342 } else { |
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1343 if (TraceMetadataChunkAllocation && Verbose) { |
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1344 gclog_or_tty->print_cr(" allocation request size " SIZE_FORMAT |
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1345 " capacity_until_GC " SIZE_FORMAT |
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1346 " allocated_capacity_bytes " SIZE_FORMAT, |
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1347 word_size, |
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1348 capacity_until_GC(), |
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1349 MetaspaceAux::allocated_capacity_bytes()); |
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1350 } |
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1351 return false; |
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1352 } |
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1353 } |
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1354 } |
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1355 |
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1356 |
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1357 |
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1358 void MetaspaceGC::compute_new_size() { |
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1359 assert(_shrink_factor <= 100, "invalid shrink factor"); |
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1360 uint current_shrink_factor = _shrink_factor; |
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1361 _shrink_factor = 0; |
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1362 |
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1363 // Until a faster way of calculating the "used" quantity is implemented, |
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1364 // use "capacity". |
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1365 const size_t used_after_gc = MetaspaceAux::allocated_capacity_bytes(); |
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1366 const size_t capacity_until_GC = MetaspaceGC::capacity_until_GC(); |
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1367 |
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1368 const double minimum_free_percentage = MinMetaspaceFreeRatio / 100.0; |
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1369 const double maximum_used_percentage = 1.0 - minimum_free_percentage; |
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1370 |
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1371 const double min_tmp = used_after_gc / maximum_used_percentage; |
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1372 size_t minimum_desired_capacity = |
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1373 (size_t)MIN2(min_tmp, double(max_uintx)); |
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1374 // Don't shrink less than the initial generation size |
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1375 minimum_desired_capacity = MAX2(minimum_desired_capacity, |
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1376 MetaspaceSize); |
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1377 |
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1378 if (PrintGCDetails && Verbose) { |
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1379 gclog_or_tty->print_cr("\nMetaspaceGC::compute_new_size: "); |
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1380 gclog_or_tty->print_cr(" " |
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1381 " minimum_free_percentage: %6.2f" |
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1382 " maximum_used_percentage: %6.2f", |
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1383 minimum_free_percentage, |
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1384 maximum_used_percentage); |
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1385 gclog_or_tty->print_cr(" " |
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1386 " used_after_gc : %6.1fKB", |
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1387 used_after_gc / (double) K); |
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1388 } |
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1389 |
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1390 |
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1391 size_t shrink_bytes = 0; |
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1392 if (capacity_until_GC < minimum_desired_capacity) { |
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1393 // If we have less capacity below the metaspace HWM, then |
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1394 // increment the HWM. |
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1395 size_t expand_bytes = minimum_desired_capacity - capacity_until_GC; |
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1396 // Don't expand unless it's significant |
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1397 if (expand_bytes >= MinMetaspaceExpansion) { |
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1398 MetaspaceGC::set_capacity_until_GC(capacity_until_GC + expand_bytes); |
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1399 } |
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1400 if (PrintGCDetails && Verbose) { |
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1401 size_t new_capacity_until_GC = capacity_until_GC; |
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1402 gclog_or_tty->print_cr(" expanding:" |
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1403 " minimum_desired_capacity: %6.1fKB" |
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1404 " expand_bytes: %6.1fKB" |
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1405 " MinMetaspaceExpansion: %6.1fKB" |
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1406 " new metaspace HWM: %6.1fKB", |
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1407 minimum_desired_capacity / (double) K, |
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1408 expand_bytes / (double) K, |
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1409 MinMetaspaceExpansion / (double) K, |
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1410 new_capacity_until_GC / (double) K); |
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1411 } |
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1412 return; |
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1413 } |
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1414 |
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1415 // No expansion, now see if we want to shrink |
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1416 // We would never want to shrink more than this |
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1417 size_t max_shrink_bytes = capacity_until_GC - minimum_desired_capacity; |
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1418 assert(max_shrink_bytes >= 0, err_msg("max_shrink_bytes " SIZE_FORMAT, |
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1419 max_shrink_bytes)); |
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1420 |
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1421 // Should shrinking be considered? |
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1422 if (MaxMetaspaceFreeRatio < 100) { |
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1423 const double maximum_free_percentage = MaxMetaspaceFreeRatio / 100.0; |
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1424 const double minimum_used_percentage = 1.0 - maximum_free_percentage; |
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1425 const double max_tmp = used_after_gc / minimum_used_percentage; |
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1426 size_t maximum_desired_capacity = (size_t)MIN2(max_tmp, double(max_uintx)); |
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1427 maximum_desired_capacity = MAX2(maximum_desired_capacity, |
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1428 MetaspaceSize); |
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1429 if (PrintGCDetails && Verbose) { |
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1430 gclog_or_tty->print_cr(" " |
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1431 " maximum_free_percentage: %6.2f" |
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1432 " minimum_used_percentage: %6.2f", |
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1433 maximum_free_percentage, |
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1434 minimum_used_percentage); |
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1435 gclog_or_tty->print_cr(" " |
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1436 " minimum_desired_capacity: %6.1fKB" |
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1437 " maximum_desired_capacity: %6.1fKB", |
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1438 minimum_desired_capacity / (double) K, |
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1439 maximum_desired_capacity / (double) K); |
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1440 } |
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1441 |
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1442 assert(minimum_desired_capacity <= maximum_desired_capacity, |
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1443 "sanity check"); |
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1444 |
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1445 if (capacity_until_GC > maximum_desired_capacity) { |
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1446 // Capacity too large, compute shrinking size |
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1447 shrink_bytes = capacity_until_GC - maximum_desired_capacity; |
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1448 // We don't want shrink all the way back to initSize if people call |
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1449 // System.gc(), because some programs do that between "phases" and then |
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1450 // we'd just have to grow the heap up again for the next phase. So we |
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1451 // damp the shrinking: 0% on the first call, 10% on the second call, 40% |
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1452 // on the third call, and 100% by the fourth call. But if we recompute |
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1453 // size without shrinking, it goes back to 0%. |
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1454 shrink_bytes = shrink_bytes / 100 * current_shrink_factor; |
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1455 assert(shrink_bytes <= max_shrink_bytes, |
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1456 err_msg("invalid shrink size " SIZE_FORMAT " not <= " SIZE_FORMAT, |
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1457 shrink_bytes, max_shrink_bytes)); |
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1458 if (current_shrink_factor == 0) { |
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1459 _shrink_factor = 10; |
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1460 } else { |
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1461 _shrink_factor = MIN2(current_shrink_factor * 4, (uint) 100); |
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1462 } |
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1463 if (PrintGCDetails && Verbose) { |
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1464 gclog_or_tty->print_cr(" " |
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1465 " shrinking:" |
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1466 " initSize: %.1fK" |
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1467 " maximum_desired_capacity: %.1fK", |
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1468 MetaspaceSize / (double) K, |
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1469 maximum_desired_capacity / (double) K); |
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1470 gclog_or_tty->print_cr(" " |
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1471 " shrink_bytes: %.1fK" |
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1472 " current_shrink_factor: %d" |
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1473 " new shrink factor: %d" |
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1474 " MinMetaspaceExpansion: %.1fK", |
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10175
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|
1475 shrink_bytes / (double) K, |
6725
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parents:
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|
1476 current_shrink_factor, |
da91efe96a93
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coleenp
parents:
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|
1477 _shrink_factor, |
da91efe96a93
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coleenp
parents:
diff
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|
1478 MinMetaspaceExpansion / (double) K); |
da91efe96a93
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parents:
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|
1479 } |
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parents:
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|
1480 } |
da91efe96a93
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parents:
diff
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|
1481 } |
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parents:
diff
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|
1482 |
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parents:
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|
1483 // Don't shrink unless it's significant |
10183
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parents:
10175
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|
1484 if (shrink_bytes >= MinMetaspaceExpansion && |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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parents:
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1485 ((capacity_until_GC - shrink_bytes) >= MetaspaceSize)) { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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|
1486 MetaspaceGC::set_capacity_until_GC(capacity_until_GC - shrink_bytes); |
6725
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|
1487 } |
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parents:
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|
1488 } |
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parents:
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|
1489 |
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|
1490 // Metadebug methods |
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|
1491 |
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1492 void Metadebug::deallocate_chunk_a_lot(SpaceManager* sm, |
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|
1493 size_t chunk_word_size){ |
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|
1494 #ifdef ASSERT |
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1495 VirtualSpaceList* vsl = sm->vs_list(); |
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1496 if (MetaDataDeallocateALot && |
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1497 Metadebug::deallocate_chunk_a_lot_count() % MetaDataDeallocateALotInterval == 0 ) { |
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1498 Metadebug::reset_deallocate_chunk_a_lot_count(); |
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1499 for (uint i = 0; i < metadata_deallocate_a_lock_chunk; i++) { |
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1500 Metachunk* dummy_chunk = vsl->current_virtual_space()->take_from_committed(chunk_word_size); |
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parents:
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|
1501 if (dummy_chunk == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
1502 break; |
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parents:
diff
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|
1503 } |
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|
1504 vsl->chunk_manager()->chunk_freelist_deallocate(dummy_chunk); |
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|
1505 |
da91efe96a93
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|
1506 if (TraceMetadataChunkAllocation && Verbose) { |
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parents:
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|
1507 gclog_or_tty->print("Metadebug::deallocate_chunk_a_lot: %d) ", |
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1508 sm->sum_count_in_chunks_in_use()); |
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|
1509 dummy_chunk->print_on(gclog_or_tty); |
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1510 gclog_or_tty->print_cr(" Free chunks total %d count %d", |
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parents:
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|
1511 vsl->chunk_manager()->free_chunks_total(), |
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parents:
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|
1512 vsl->chunk_manager()->free_chunks_count()); |
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parents:
diff
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|
1513 } |
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parents:
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|
1514 } |
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|
1515 } else { |
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|
1516 Metadebug::inc_deallocate_chunk_a_lot_count(); |
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parents:
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|
1517 } |
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parents:
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|
1518 #endif |
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|
1519 } |
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|
1520 |
da91efe96a93
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|
1521 void Metadebug::deallocate_block_a_lot(SpaceManager* sm, |
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parents:
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|
1522 size_t raw_word_size){ |
da91efe96a93
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diff
changeset
|
1523 #ifdef ASSERT |
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|
1524 if (MetaDataDeallocateALot && |
da91efe96a93
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|
1525 Metadebug::deallocate_block_a_lot_count() % MetaDataDeallocateALotInterval == 0 ) { |
da91efe96a93
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coleenp
parents:
diff
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|
1526 Metadebug::set_deallocate_block_a_lot_count(0); |
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coleenp
parents:
diff
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|
1527 for (uint i = 0; i < metadata_deallocate_a_lot_block; i++) { |
6885 | 1528 MetaWord* dummy_block = sm->allocate_work(raw_word_size); |
6725
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coleenp
parents:
diff
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|
1529 if (dummy_block == 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1530 break; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1531 } |
6885 | 1532 sm->deallocate(dummy_block, raw_word_size); |
6725
da91efe96a93
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parents:
diff
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|
1533 } |
da91efe96a93
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coleenp
parents:
diff
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|
1534 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1535 Metadebug::inc_deallocate_block_a_lot_count(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1536 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1537 #endif |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1538 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1539 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
1540 void Metadebug::init_allocation_fail_alot_count() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1541 if (MetadataAllocationFailALot) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1542 _allocation_fail_alot_count = |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
1543 1+(long)((double)MetadataAllocationFailALotInterval*os::random()/(max_jint+1.0)); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1544 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1545 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1546 |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1547 #ifdef ASSERT |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1548 bool Metadebug::test_metadata_failure() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1549 if (MetadataAllocationFailALot && |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1550 Threads::is_vm_complete()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1551 if (_allocation_fail_alot_count > 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1552 _allocation_fail_alot_count--; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1553 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1554 if (TraceMetadataChunkAllocation && Verbose) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1555 gclog_or_tty->print_cr("Metadata allocation failing for " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1556 "MetadataAllocationFailALot"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1557 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1558 init_allocation_fail_alot_count(); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1559 return true; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1560 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1561 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1562 return false; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1563 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1564 #endif |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1565 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1566 // ChunkManager methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1567 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1568 size_t ChunkManager::free_chunks_total() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1569 return _free_chunks_total; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1570 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1571 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1572 size_t ChunkManager::free_chunks_total_in_bytes() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1573 return free_chunks_total() * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1574 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1575 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1576 size_t ChunkManager::free_chunks_count() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1577 #ifdef ASSERT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1578 if (!UseConcMarkSweepGC && !SpaceManager::expand_lock()->is_locked()) { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1579 MutexLockerEx cl(SpaceManager::expand_lock(), |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1580 Mutex::_no_safepoint_check_flag); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1581 // This lock is only needed in debug because the verification |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1582 // of the _free_chunks_totals walks the list of free chunks |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
1583 slow_locked_verify_free_chunks_count(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1584 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1585 #endif |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
1586 return _free_chunks_count; |
6725
da91efe96a93
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coleenp
parents:
diff
changeset
|
1587 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1588 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1589 void ChunkManager::locked_verify_free_chunks_total() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1590 assert_lock_strong(SpaceManager::expand_lock()); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1591 assert(sum_free_chunks() == _free_chunks_total, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1592 err_msg("_free_chunks_total " SIZE_FORMAT " is not the" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1593 " same as sum " SIZE_FORMAT, _free_chunks_total, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1594 sum_free_chunks())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1595 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1596 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
1597 void ChunkManager::verify_free_chunks_total() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
1598 MutexLockerEx cl(SpaceManager::expand_lock(), |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1599 Mutex::_no_safepoint_check_flag); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1600 locked_verify_free_chunks_total(); |
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parents:
diff
changeset
|
1601 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1602 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1603 void ChunkManager::locked_verify_free_chunks_count() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1604 assert_lock_strong(SpaceManager::expand_lock()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1605 assert(sum_free_chunks_count() == _free_chunks_count, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1606 err_msg("_free_chunks_count " SIZE_FORMAT " is not the" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1607 " same as sum " SIZE_FORMAT, _free_chunks_count, |
da91efe96a93
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1608 sum_free_chunks_count())); |
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1609 } |
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1610 |
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1611 void ChunkManager::verify_free_chunks_count() { |
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1612 #ifdef ASSERT |
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1613 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1614 Mutex::_no_safepoint_check_flag); |
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1615 locked_verify_free_chunks_count(); |
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1616 #endif |
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1617 } |
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1618 |
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1619 void ChunkManager::verify() { |
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1620 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1621 Mutex::_no_safepoint_check_flag); |
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1622 locked_verify(); |
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1623 } |
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1624 |
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1625 void ChunkManager::locked_verify() { |
6885 | 1626 locked_verify_free_chunks_count(); |
6725
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1627 locked_verify_free_chunks_total(); |
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|
1628 } |
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|
1629 |
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1630 void ChunkManager::locked_print_free_chunks(outputStream* st) { |
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1631 assert_lock_strong(SpaceManager::expand_lock()); |
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1632 st->print_cr("Free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1633 _free_chunks_total, _free_chunks_count); |
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1634 } |
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1635 |
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1636 void ChunkManager::locked_print_sum_free_chunks(outputStream* st) { |
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1637 assert_lock_strong(SpaceManager::expand_lock()); |
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1638 st->print_cr("Sum free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1639 sum_free_chunks(), sum_free_chunks_count()); |
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1640 } |
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1641 ChunkList* ChunkManager::free_chunks(ChunkIndex index) { |
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1642 return &_free_chunks[index]; |
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1643 } |
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1644 |
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1645 // These methods that sum the free chunk lists are used in printing |
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1646 // methods that are used in product builds. |
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1647 size_t ChunkManager::sum_free_chunks() { |
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1648 assert_lock_strong(SpaceManager::expand_lock()); |
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1649 size_t result = 0; |
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1650 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
6725
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1651 ChunkList* list = free_chunks(i); |
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1652 |
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1653 if (list == NULL) { |
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1654 continue; |
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1655 } |
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1656 |
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1657 result = result + list->count() * list->size(); |
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1658 } |
6885 | 1659 result = result + humongous_dictionary()->total_size(); |
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1660 return result; |
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1661 } |
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1662 |
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1663 size_t ChunkManager::sum_free_chunks_count() { |
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1664 assert_lock_strong(SpaceManager::expand_lock()); |
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1665 size_t count = 0; |
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1666 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
6725
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1667 ChunkList* list = free_chunks(i); |
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1668 if (list == NULL) { |
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1669 continue; |
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1670 } |
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1671 count = count + list->count(); |
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1672 } |
6885 | 1673 count = count + humongous_dictionary()->total_free_blocks(); |
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1674 return count; |
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1675 } |
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1676 |
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1677 ChunkList* ChunkManager::find_free_chunks_list(size_t word_size) { |
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1678 ChunkIndex index = list_index(word_size); |
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1679 assert(index < HumongousIndex, "No humongous list"); |
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1680 return free_chunks(index); |
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1681 } |
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1682 |
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1683 void ChunkManager::free_chunks_put(Metachunk* chunk) { |
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1684 assert_lock_strong(SpaceManager::expand_lock()); |
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1685 ChunkList* free_list = find_free_chunks_list(chunk->word_size()); |
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1686 chunk->set_next(free_list->head()); |
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1687 free_list->set_head(chunk); |
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1688 // chunk is being returned to the chunk free list |
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1689 inc_free_chunks_total(chunk->capacity_word_size()); |
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1690 slow_locked_verify(); |
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1691 } |
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1692 |
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1693 void ChunkManager::chunk_freelist_deallocate(Metachunk* chunk) { |
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1694 // The deallocation of a chunk originates in the freelist |
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1695 // manangement code for a Metaspace and does not hold the |
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1696 // lock. |
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1697 assert(chunk != NULL, "Deallocating NULL"); |
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1698 assert_lock_strong(SpaceManager::expand_lock()); |
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|
1699 slow_locked_verify(); |
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1700 if (TraceMetadataChunkAllocation) { |
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1701 tty->print_cr("ChunkManager::chunk_freelist_deallocate: chunk " |
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1702 PTR_FORMAT " size " SIZE_FORMAT, |
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1703 chunk, chunk->word_size()); |
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|
1704 } |
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1705 free_chunks_put(chunk); |
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|
1706 } |
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1707 |
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1708 Metachunk* ChunkManager::free_chunks_get(size_t word_size) { |
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1709 assert_lock_strong(SpaceManager::expand_lock()); |
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1710 |
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1711 slow_locked_verify(); |
6885 | 1712 |
1713 Metachunk* chunk = NULL; | |
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1714 if (list_index(word_size) != HumongousIndex) { |
6885 | 1715 ChunkList* free_list = find_free_chunks_list(word_size); |
1716 assert(free_list != NULL, "Sanity check"); | |
1717 | |
1718 chunk = free_list->head(); | |
1719 debug_only(Metachunk* debug_head = chunk;) | |
1720 | |
1721 if (chunk == NULL) { | |
1722 return NULL; | |
1723 } | |
1724 | |
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1725 // Remove the chunk as the head of the list. |
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1726 free_list->remove_chunk(chunk); |
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1727 |
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1728 // Chunk is being removed from the chunks free list. |
6885 | 1729 dec_free_chunks_total(chunk->capacity_word_size()); |
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1730 |
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1731 if (TraceMetadataChunkAllocation && Verbose) { |
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1732 tty->print_cr("ChunkManager::free_chunks_get: free_list " |
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1733 PTR_FORMAT " head " PTR_FORMAT " size " SIZE_FORMAT, |
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1734 free_list, chunk, chunk->word_size()); |
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|
1735 } |
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1736 } else { |
6885 | 1737 chunk = humongous_dictionary()->get_chunk( |
1738 word_size, | |
1739 FreeBlockDictionary<Metachunk>::atLeast); | |
1740 | |
1741 if (chunk != NULL) { | |
1742 if (TraceMetadataHumongousAllocation) { | |
1743 size_t waste = chunk->word_size() - word_size; | |
1744 tty->print_cr("Free list allocate humongous chunk size " SIZE_FORMAT | |
1745 " for requested size " SIZE_FORMAT | |
1746 " waste " SIZE_FORMAT, | |
1747 chunk->word_size(), word_size, waste); | |
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1748 } |
6885 | 1749 // Chunk is being removed from the chunks free list. |
1750 dec_free_chunks_total(chunk->capacity_word_size()); | |
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1751 } else { |
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1752 return NULL; |
6885 | 1753 } |
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1754 } |
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1755 |
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1756 // Remove it from the links to this freelist |
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1757 chunk->set_next(NULL); |
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1758 chunk->set_prev(NULL); |
10175 | 1759 #ifdef ASSERT |
1760 // Chunk is no longer on any freelist. Setting to false make container_count_slow() | |
1761 // work. | |
1762 chunk->set_is_free(false); | |
1763 #endif | |
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1764 slow_locked_verify(); |
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1765 return chunk; |
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1766 } |
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1767 |
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1768 Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) { |
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1769 assert_lock_strong(SpaceManager::expand_lock()); |
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1770 slow_locked_verify(); |
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1771 |
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1772 // Take from the beginning of the list |
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1773 Metachunk* chunk = free_chunks_get(word_size); |
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1774 if (chunk == NULL) { |
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1775 return NULL; |
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1776 } |
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1777 |
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1778 assert((word_size <= chunk->word_size()) || |
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1779 list_index(chunk->word_size() == HumongousIndex), |
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1780 "Non-humongous variable sized chunk"); |
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1781 if (TraceMetadataChunkAllocation) { |
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1782 size_t list_count; |
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1783 if (list_index(word_size) < HumongousIndex) { |
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1784 ChunkList* list = find_free_chunks_list(word_size); |
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1785 list_count = list->count(); |
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1786 } else { |
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1787 list_count = humongous_dictionary()->total_count(); |
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1788 } |
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1789 tty->print("ChunkManager::chunk_freelist_allocate: " PTR_FORMAT " chunk " |
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1790 PTR_FORMAT " size " SIZE_FORMAT " count " SIZE_FORMAT " ", |
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1791 this, chunk, chunk->word_size(), list_count); |
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1792 locked_print_free_chunks(tty); |
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1793 } |
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1794 |
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1795 return chunk; |
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1796 } |
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1797 |
6885 | 1798 void ChunkManager::print_on(outputStream* out) { |
1799 if (PrintFLSStatistics != 0) { | |
1800 humongous_dictionary()->report_statistics(); | |
1801 } | |
1802 } | |
1803 | |
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1804 // SpaceManager methods |
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1805 |
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1806 void SpaceManager::get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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1807 size_t* chunk_word_size, |
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1808 size_t* class_chunk_word_size) { |
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1809 switch (type) { |
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1810 case Metaspace::BootMetaspaceType: |
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1811 *chunk_word_size = Metaspace::first_chunk_word_size(); |
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1812 *class_chunk_word_size = Metaspace::first_class_chunk_word_size(); |
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1813 break; |
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1814 case Metaspace::ROMetaspaceType: |
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1815 *chunk_word_size = SharedReadOnlySize / wordSize; |
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1816 *class_chunk_word_size = ClassSpecializedChunk; |
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1817 break; |
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1818 case Metaspace::ReadWriteMetaspaceType: |
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1819 *chunk_word_size = SharedReadWriteSize / wordSize; |
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1820 *class_chunk_word_size = ClassSpecializedChunk; |
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1821 break; |
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1822 case Metaspace::AnonymousMetaspaceType: |
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1823 case Metaspace::ReflectionMetaspaceType: |
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1824 *chunk_word_size = SpecializedChunk; |
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1825 *class_chunk_word_size = ClassSpecializedChunk; |
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1826 break; |
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1827 default: |
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1828 *chunk_word_size = SmallChunk; |
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1829 *class_chunk_word_size = ClassSmallChunk; |
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1830 break; |
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1831 } |
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1832 assert(*chunk_word_size != 0 && *class_chunk_word_size != 0, |
7446
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1833 err_msg("Initial chunks sizes bad: data " SIZE_FORMAT |
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1834 " class " SIZE_FORMAT, |
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1835 *chunk_word_size, *class_chunk_word_size)); |
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1836 } |
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1837 |
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1838 size_t SpaceManager::sum_free_in_chunks_in_use() const { |
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1839 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1840 size_t free = 0; |
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1841 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1842 Metachunk* chunk = chunks_in_use(i); |
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1843 while (chunk != NULL) { |
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1844 free += chunk->free_word_size(); |
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1845 chunk = chunk->next(); |
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1846 } |
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1847 } |
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1848 return free; |
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1849 } |
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1850 |
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1851 size_t SpaceManager::sum_waste_in_chunks_in_use() const { |
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1852 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1853 size_t result = 0; |
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1854 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1855 result += sum_waste_in_chunks_in_use(i); |
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1856 } |
6885 | 1857 |
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1858 return result; |
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1859 } |
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1860 |
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1861 size_t SpaceManager::sum_waste_in_chunks_in_use(ChunkIndex index) const { |
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1862 size_t result = 0; |
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1863 Metachunk* chunk = chunks_in_use(index); |
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1864 // Count the free space in all the chunk but not the |
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1865 // current chunk from which allocations are still being done. |
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1866 while (chunk != NULL) { |
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1867 if (chunk != current_chunk()) { |
6885 | 1868 result += chunk->free_word_size(); |
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1869 } |
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1870 chunk = chunk->next(); |
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1871 } |
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1872 return result; |
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1873 } |
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1874 |
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1875 size_t SpaceManager::sum_capacity_in_chunks_in_use() const { |
10183
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1876 // For CMS use "allocated_chunks_words()" which does not need the |
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1877 // Metaspace lock. For the other collectors sum over the |
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1878 // lists. Use both methods as a check that "allocated_chunks_words()" |
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1879 // is correct. That is, sum_capacity_in_chunks() is too expensive |
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1880 // to use in the product and allocated_chunks_words() should be used |
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1881 // but allow for checking that allocated_chunks_words() returns the same |
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1882 // value as sum_capacity_in_chunks_in_use() which is the definitive |
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1883 // answer. |
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1884 if (UseConcMarkSweepGC) { |
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1885 return allocated_chunks_words(); |
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1886 } else { |
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1887 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1888 size_t sum = 0; |
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1889 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1890 Metachunk* chunk = chunks_in_use(i); |
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1891 while (chunk != NULL) { |
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1892 sum += chunk->capacity_word_size(); |
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1893 chunk = chunk->next(); |
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1894 } |
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1895 } |
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1896 return sum; |
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1897 } |
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1898 } |
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1899 |
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1900 size_t SpaceManager::sum_count_in_chunks_in_use() { |
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1901 size_t count = 0; |
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1902 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1903 count = count + sum_count_in_chunks_in_use(i); |
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1904 } |
6885 | 1905 |
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1906 return count; |
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1907 } |
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1908 |
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1909 size_t SpaceManager::sum_count_in_chunks_in_use(ChunkIndex i) { |
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1910 size_t count = 0; |
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1911 Metachunk* chunk = chunks_in_use(i); |
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1912 while (chunk != NULL) { |
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1913 count++; |
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1914 chunk = chunk->next(); |
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1915 } |
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1916 return count; |
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1917 } |
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1918 |
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1919 |
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1920 size_t SpaceManager::sum_used_in_chunks_in_use() const { |
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1921 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1922 size_t used = 0; |
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1923 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1924 Metachunk* chunk = chunks_in_use(i); |
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1925 while (chunk != NULL) { |
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1926 used += chunk->used_word_size(); |
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1927 chunk = chunk->next(); |
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1928 } |
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1929 } |
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1930 return used; |
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1931 } |
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1932 |
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1933 void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const { |
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1934 |
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1935 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1936 Metachunk* chunk = chunks_in_use(i); |
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1937 st->print("SpaceManager: %s " PTR_FORMAT, |
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1938 chunk_size_name(i), chunk); |
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1939 if (chunk != NULL) { |
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1940 st->print_cr(" free " SIZE_FORMAT, |
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1941 chunk->free_word_size()); |
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1942 } else { |
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1943 st->print_cr(""); |
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1944 } |
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1945 } |
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1946 |
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1947 vs_list()->chunk_manager()->locked_print_free_chunks(st); |
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1948 vs_list()->chunk_manager()->locked_print_sum_free_chunks(st); |
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1949 } |
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1950 |
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1951 size_t SpaceManager::calc_chunk_size(size_t word_size) { |
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1952 |
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1953 // Decide between a small chunk and a medium chunk. Up to |
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1954 // _small_chunk_limit small chunks can be allocated but |
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1955 // once a medium chunk has been allocated, no more small |
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1956 // chunks will be allocated. |
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1957 size_t chunk_word_size; |
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1958 if (chunks_in_use(MediumIndex) == NULL && |
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1959 sum_count_in_chunks_in_use(SmallIndex) < _small_chunk_limit) { |
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1960 chunk_word_size = (size_t) small_chunk_size(); |
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1961 if (word_size + Metachunk::overhead() > small_chunk_size()) { |
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1962 chunk_word_size = medium_chunk_size(); |
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1963 } |
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1964 } else { |
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1965 chunk_word_size = medium_chunk_size(); |
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1966 } |
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1967 |
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1968 // Might still need a humongous chunk. Enforce an |
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1969 // eight word granularity to facilitate reuse (some |
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1970 // wastage but better chance of reuse). |
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1971 size_t if_humongous_sized_chunk = |
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1972 align_size_up(word_size + Metachunk::overhead(), |
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1973 HumongousChunkGranularity); |
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1974 chunk_word_size = |
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1975 MAX2((size_t) chunk_word_size, if_humongous_sized_chunk); |
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1976 |
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1977 assert(!SpaceManager::is_humongous(word_size) || |
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1978 chunk_word_size == if_humongous_sized_chunk, |
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1979 err_msg("Size calculation is wrong, word_size " SIZE_FORMAT |
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1980 " chunk_word_size " SIZE_FORMAT, |
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1981 word_size, chunk_word_size)); |
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1982 if (TraceMetadataHumongousAllocation && |
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1983 SpaceManager::is_humongous(word_size)) { |
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1984 gclog_or_tty->print_cr("Metadata humongous allocation:"); |
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1985 gclog_or_tty->print_cr(" word_size " PTR_FORMAT, word_size); |
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1986 gclog_or_tty->print_cr(" chunk_word_size " PTR_FORMAT, |
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1987 chunk_word_size); |
6885 | 1988 gclog_or_tty->print_cr(" chunk overhead " PTR_FORMAT, |
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1989 Metachunk::overhead()); |
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1990 } |
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1991 return chunk_word_size; |
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1992 } |
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1993 |
6885 | 1994 MetaWord* SpaceManager::grow_and_allocate(size_t word_size) { |
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1995 assert(vs_list()->current_virtual_space() != NULL, |
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1996 "Should have been set"); |
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1997 assert(current_chunk() == NULL || |
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1998 current_chunk()->allocate(word_size) == NULL, |
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1999 "Don't need to expand"); |
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2000 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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2001 |
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2002 if (TraceMetadataChunkAllocation && Verbose) { |
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2003 size_t words_left = 0; |
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2004 size_t words_used = 0; |
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2005 if (current_chunk() != NULL) { |
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2006 words_left = current_chunk()->free_word_size(); |
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2007 words_used = current_chunk()->used_word_size(); |
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2008 } |
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2009 gclog_or_tty->print_cr("SpaceManager::grow_and_allocate for " SIZE_FORMAT |
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2010 " words " SIZE_FORMAT " words used " SIZE_FORMAT |
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2011 " words left", |
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2012 word_size, words_used, words_left); |
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2013 } |
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2014 |
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2015 // Get another chunk out of the virtual space |
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2016 size_t grow_chunks_by_words = calc_chunk_size(word_size); |
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2017 Metachunk* next = get_new_chunk(word_size, grow_chunks_by_words); |
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2018 |
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2019 // If a chunk was available, add it to the in-use chunk list |
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2020 // and do an allocation from it. |
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2021 if (next != NULL) { |
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2022 Metadebug::deallocate_chunk_a_lot(this, grow_chunks_by_words); |
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2023 // Add to this manager's list of chunks in use. |
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2024 add_chunk(next, false); |
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2025 return next->allocate(word_size); |
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2026 } |
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2027 return NULL; |
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2028 } |
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2029 |
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2030 void SpaceManager::print_on(outputStream* st) const { |
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2031 |
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2032 for (ChunkIndex i = ZeroIndex; |
6885 | 2033 i < NumberOfInUseLists ; |
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2034 i = next_chunk_index(i) ) { |
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2035 st->print_cr(" chunks_in_use " PTR_FORMAT " chunk size " PTR_FORMAT, |
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2036 chunks_in_use(i), |
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2037 chunks_in_use(i) == NULL ? 0 : chunks_in_use(i)->word_size()); |
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2038 } |
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2039 st->print_cr(" waste: Small " SIZE_FORMAT " Medium " SIZE_FORMAT |
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2040 " Humongous " SIZE_FORMAT, |
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2041 sum_waste_in_chunks_in_use(SmallIndex), |
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2042 sum_waste_in_chunks_in_use(MediumIndex), |
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2043 sum_waste_in_chunks_in_use(HumongousIndex)); |
6885 | 2044 // block free lists |
2045 if (block_freelists() != NULL) { | |
2046 st->print_cr("total in block free lists " SIZE_FORMAT, | |
2047 block_freelists()->total_size()); | |
2048 } | |
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2049 } |
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2050 |
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2051 SpaceManager::SpaceManager(Metaspace::MetadataType mdtype, |
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2052 Mutex* lock, |
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2053 VirtualSpaceList* vs_list) : |
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2054 _vs_list(vs_list), |
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2055 _mdtype(mdtype), |
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2056 _allocated_blocks_words(0), |
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2057 _allocated_chunks_words(0), |
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2058 _allocated_chunks_count(0), |
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2059 _lock(lock) |
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2060 { |
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2061 initialize(); |
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2062 } |
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2063 |
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2064 void SpaceManager::inc_size_metrics(size_t words) { |
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2065 assert_lock_strong(SpaceManager::expand_lock()); |
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2066 // Total of allocated Metachunks and allocated Metachunks count |
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2067 // for each SpaceManager |
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2068 _allocated_chunks_words = _allocated_chunks_words + words; |
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2069 _allocated_chunks_count++; |
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2070 // Global total of capacity in allocated Metachunks |
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2071 MetaspaceAux::inc_capacity(mdtype(), words); |
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2072 // Global total of allocated Metablocks. |
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2073 // used_words_slow() includes the overhead in each |
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2074 // Metachunk so include it in the used when the |
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2075 // Metachunk is first added (so only added once per |
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2076 // Metachunk). |
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2077 MetaspaceAux::inc_used(mdtype(), Metachunk::overhead()); |
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2078 } |
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2079 |
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2080 void SpaceManager::inc_used_metrics(size_t words) { |
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2081 // Add to the per SpaceManager total |
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2082 Atomic::add_ptr(words, &_allocated_blocks_words); |
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2083 // Add to the global total |
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2084 MetaspaceAux::inc_used(mdtype(), words); |
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2085 } |
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2086 |
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2087 void SpaceManager::dec_total_from_size_metrics() { |
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2088 MetaspaceAux::dec_capacity(mdtype(), allocated_chunks_words()); |
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2089 MetaspaceAux::dec_used(mdtype(), allocated_blocks_words()); |
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2090 // Also deduct the overhead per Metachunk |
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2091 MetaspaceAux::dec_used(mdtype(), allocated_chunks_count() * Metachunk::overhead()); |
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2092 } |
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2093 |
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2094 void SpaceManager::initialize() { |
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2095 Metadebug::init_allocation_fail_alot_count(); |
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2096 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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2097 _chunks_in_use[i] = NULL; |
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2098 } |
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2099 _current_chunk = NULL; |
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2100 if (TraceMetadataChunkAllocation && Verbose) { |
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2101 gclog_or_tty->print_cr("SpaceManager(): " PTR_FORMAT, this); |
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2102 } |
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2103 } |
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2104 |
10101
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2105 void ChunkManager::return_chunks(ChunkIndex index, Metachunk* chunks) { |
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2106 if (chunks == NULL) { |
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2107 return; |
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|
2108 } |
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2109 ChunkList* list = free_chunks(index); |
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2110 assert(list->size() == chunks->word_size(), "Mismatch in chunk sizes"); |
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2111 assert_lock_strong(SpaceManager::expand_lock()); |
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2112 Metachunk* cur = chunks; |
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2113 |
10175 | 2114 // This returns chunks one at a time. If a new |
10101
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2115 // class List can be created that is a base class |
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2116 // of FreeList then something like FreeList::prepend() |
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2117 // can be used in place of this loop |
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2118 while (cur != NULL) { |
10175 | 2119 assert(cur->container() != NULL, "Container should have been set"); |
2120 cur->container()->dec_container_count(); | |
10101
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2121 // Capture the next link before it is changed |
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2122 // by the call to return_chunk_at_head(); |
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2123 Metachunk* next = cur->next(); |
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2124 cur->set_is_free(true); |
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2125 list->return_chunk_at_head(cur); |
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2126 cur = next; |
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2127 } |
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2128 } |
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2129 |
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2130 SpaceManager::~SpaceManager() { |
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2131 // This call this->_lock which can't be done while holding expand_lock() |
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2132 assert(sum_capacity_in_chunks_in_use() == allocated_chunks_words(), |
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2133 err_msg("sum_capacity_in_chunks_in_use() " SIZE_FORMAT |
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2134 " allocated_chunks_words() " SIZE_FORMAT, |
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2135 sum_capacity_in_chunks_in_use(), allocated_chunks_words())); |
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2136 |
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2137 MutexLockerEx fcl(SpaceManager::expand_lock(), |
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2138 Mutex::_no_safepoint_check_flag); |
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2139 |
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2140 ChunkManager* chunk_manager = vs_list()->chunk_manager(); |
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2141 |
6969
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|
2142 chunk_manager->slow_locked_verify(); |
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2143 |
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2144 dec_total_from_size_metrics(); |
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2145 |
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2146 if (TraceMetadataChunkAllocation && Verbose) { |
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2147 gclog_or_tty->print_cr("~SpaceManager(): " PTR_FORMAT, this); |
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2148 locked_print_chunks_in_use_on(gclog_or_tty); |
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2149 } |
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2150 |
10175 | 2151 // Do not mangle freed Metachunks. The chunk size inside Metachunks |
2152 // is during the freeing of a VirtualSpaceNodes. | |
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2153 |
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2154 // Have to update before the chunks_in_use lists are emptied |
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2155 // below. |
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2156 chunk_manager->inc_free_chunks_total(allocated_chunks_words(), |
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2157 sum_count_in_chunks_in_use()); |
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2158 |
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2159 // Add all the chunks in use by this space manager |
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2160 // to the global list of free chunks. |
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2161 |
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2162 // Follow each list of chunks-in-use and add them to the |
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2163 // free lists. Each list is NULL terminated. |
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2164 |
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2165 for (ChunkIndex i = ZeroIndex; i < HumongousIndex; i = next_chunk_index(i)) { |
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2166 if (TraceMetadataChunkAllocation && Verbose) { |
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2167 gclog_or_tty->print_cr("returned %d %s chunks to freelist", |
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2168 sum_count_in_chunks_in_use(i), |
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2169 chunk_size_name(i)); |
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2170 } |
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2171 Metachunk* chunks = chunks_in_use(i); |
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2172 chunk_manager->return_chunks(i, chunks); |
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2173 set_chunks_in_use(i, NULL); |
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2174 if (TraceMetadataChunkAllocation && Verbose) { |
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2175 gclog_or_tty->print_cr("updated freelist count %d %s", |
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2176 chunk_manager->free_chunks(i)->count(), |
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2177 chunk_size_name(i)); |
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2178 } |
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2179 assert(i != HumongousIndex, "Humongous chunks are handled explicitly later"); |
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2180 } |
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2181 |
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2182 // The medium chunk case may be optimized by passing the head and |
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2183 // tail of the medium chunk list to add_at_head(). The tail is often |
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2184 // the current chunk but there are probably exceptions. |
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2185 |
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2186 // Humongous chunks |
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2187 if (TraceMetadataChunkAllocation && Verbose) { |
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2188 gclog_or_tty->print_cr("returned %d %s humongous chunks to dictionary", |
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2189 sum_count_in_chunks_in_use(HumongousIndex), |
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2190 chunk_size_name(HumongousIndex)); |
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2191 gclog_or_tty->print("Humongous chunk dictionary: "); |
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2192 } |
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2193 // Humongous chunks are never the current chunk. |
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2194 Metachunk* humongous_chunks = chunks_in_use(HumongousIndex); |
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2195 |
6885 | 2196 while (humongous_chunks != NULL) { |
2197 #ifdef ASSERT | |
2198 humongous_chunks->set_is_free(true); | |
2199 #endif | |
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2200 if (TraceMetadataChunkAllocation && Verbose) { |
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2201 gclog_or_tty->print(PTR_FORMAT " (" SIZE_FORMAT ") ", |
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2202 humongous_chunks, |
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2203 humongous_chunks->word_size()); |
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2204 } |
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2205 assert(humongous_chunks->word_size() == (size_t) |
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2206 align_size_up(humongous_chunks->word_size(), |
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2207 HumongousChunkGranularity), |
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2208 err_msg("Humongous chunk size is wrong: word size " SIZE_FORMAT |
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2209 " granularity %d", |
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2210 humongous_chunks->word_size(), HumongousChunkGranularity)); |
6885 | 2211 Metachunk* next_humongous_chunks = humongous_chunks->next(); |
10175 | 2212 humongous_chunks->container()->dec_container_count(); |
6885 | 2213 chunk_manager->humongous_dictionary()->return_chunk(humongous_chunks); |
2214 humongous_chunks = next_humongous_chunks; | |
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2215 } |
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2216 if (TraceMetadataChunkAllocation && Verbose) { |
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2217 gclog_or_tty->print_cr(""); |
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2218 gclog_or_tty->print_cr("updated dictionary count %d %s", |
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2219 chunk_manager->humongous_dictionary()->total_count(), |
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2220 chunk_size_name(HumongousIndex)); |
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2221 } |
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2222 chunk_manager->slow_locked_verify(); |
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2223 } |
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2224 |
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2225 const char* SpaceManager::chunk_size_name(ChunkIndex index) const { |
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2226 switch (index) { |
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2227 case SpecializedIndex: |
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2228 return "Specialized"; |
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2229 case SmallIndex: |
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2230 return "Small"; |
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2231 case MediumIndex: |
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2232 return "Medium"; |
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2233 case HumongousIndex: |
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2234 return "Humongous"; |
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2235 default: |
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2236 return NULL; |
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2237 } |
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2238 } |
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2239 |
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2240 ChunkIndex ChunkManager::list_index(size_t size) { |
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2241 switch (size) { |
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2242 case SpecializedChunk: |
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2243 assert(SpecializedChunk == ClassSpecializedChunk, |
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2244 "Need branch for ClassSpecializedChunk"); |
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2245 return SpecializedIndex; |
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2246 case SmallChunk: |
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2247 case ClassSmallChunk: |
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2248 return SmallIndex; |
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2249 case MediumChunk: |
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2250 case ClassMediumChunk: |
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2251 return MediumIndex; |
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2252 default: |
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2253 assert(size > MediumChunk || size > ClassMediumChunk, |
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2254 "Not a humongous chunk"); |
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2255 return HumongousIndex; |
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2256 } |
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2257 } |
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2258 |
6885 | 2259 void SpaceManager::deallocate(MetaWord* p, size_t word_size) { |
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2260 assert_lock_strong(_lock); |
11966 | 2261 size_t raw_word_size = get_raw_word_size(word_size); |
6885 | 2262 size_t min_size = TreeChunk<Metablock, FreeList>::min_size(); |
11966 | 2263 assert(raw_word_size >= min_size, |
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2264 err_msg("Should not deallocate dark matter " SIZE_FORMAT "<" SIZE_FORMAT, word_size, min_size)); |
11966 | 2265 block_freelists()->return_block(p, raw_word_size); |
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2266 } |
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2267 |
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2268 // Adds a chunk to the list of chunks in use. |
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2269 void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) { |
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2270 |
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2271 assert(new_chunk != NULL, "Should not be NULL"); |
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2272 assert(new_chunk->next() == NULL, "Should not be on a list"); |
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2273 |
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2274 new_chunk->reset_empty(); |
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2275 |
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2276 // Find the correct list and and set the current |
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2277 // chunk for that list. |
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2278 ChunkIndex index = ChunkManager::list_index(new_chunk->word_size()); |
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2279 |
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2280 if (index != HumongousIndex) { |
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2281 set_current_chunk(new_chunk); |
7446
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2282 new_chunk->set_next(chunks_in_use(index)); |
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2283 set_chunks_in_use(index, new_chunk); |
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2284 } else { |
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2285 // For null class loader data and DumpSharedSpaces, the first chunk isn't |
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2286 // small, so small will be null. Link this first chunk as the current |
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|
2287 // chunk. |
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|
2288 if (make_current) { |
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2289 // Set as the current chunk but otherwise treat as a humongous chunk. |
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2290 set_current_chunk(new_chunk); |
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|
2291 } |
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2292 // Link at head. The _current_chunk only points to a humongous chunk for |
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2293 // the null class loader metaspace (class and data virtual space managers) |
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2294 // any humongous chunks so will not point to the tail |
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2295 // of the humongous chunks list. |
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2296 new_chunk->set_next(chunks_in_use(HumongousIndex)); |
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2297 set_chunks_in_use(HumongousIndex, new_chunk); |
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2298 |
7447
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|
2299 assert(new_chunk->word_size() > medium_chunk_size(), "List inconsistency"); |
6725
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2300 } |
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2301 |
10183
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2302 // Add to the running sum of capacity |
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2303 inc_size_metrics(new_chunk->word_size()); |
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2304 |
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2305 assert(new_chunk->is_empty(), "Not ready for reuse"); |
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2306 if (TraceMetadataChunkAllocation && Verbose) { |
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2307 gclog_or_tty->print("SpaceManager::add_chunk: %d) ", |
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2308 sum_count_in_chunks_in_use()); |
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2309 new_chunk->print_on(gclog_or_tty); |
10183
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2310 if (vs_list() != NULL) { |
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2311 vs_list()->chunk_manager()->locked_print_free_chunks(tty); |
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2312 } |
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|
2313 } |
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|
2314 } |
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2315 |
7446
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2316 Metachunk* SpaceManager::get_new_chunk(size_t word_size, |
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2317 size_t grow_chunks_by_words) { |
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2318 |
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2319 Metachunk* next = vs_list()->get_new_chunk(word_size, |
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2320 grow_chunks_by_words, |
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2321 medium_chunk_bunch()); |
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2322 |
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2323 if (TraceMetadataHumongousAllocation && |
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2324 SpaceManager::is_humongous(next->word_size())) { |
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2325 gclog_or_tty->print_cr(" new humongous chunk word size " PTR_FORMAT, |
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2326 next->word_size()); |
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|
2327 } |
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2328 |
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2329 return next; |
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|
2330 } |
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|
2331 |
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2332 MetaWord* SpaceManager::allocate(size_t word_size) { |
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2333 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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2334 |
10376
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2335 size_t raw_word_size = get_raw_word_size(word_size); |
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2336 BlockFreelist* fl = block_freelists(); |
6885 | 2337 MetaWord* p = NULL; |
6725
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2338 // Allocation from the dictionary is expensive in the sense that |
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2339 // the dictionary has to be searched for a size. Don't allocate |
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2340 // from the dictionary until it starts to get fat. Is this |
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2341 // a reasonable policy? Maybe an skinny dictionary is fast enough |
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|
2342 // for allocations. Do some profiling. JJJ |
6885 | 2343 if (fl->total_size() > allocation_from_dictionary_limit) { |
2344 p = fl->get_block(raw_word_size); | |
6725
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|
2345 } |
6885 | 2346 if (p == NULL) { |
2347 p = allocate_work(raw_word_size); | |
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2348 } |
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|
2349 Metadebug::deallocate_block_a_lot(this, raw_word_size); |
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2350 |
6885 | 2351 return p; |
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|
2352 } |
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|
2353 |
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2354 // Returns the address of spaced allocated for "word_size". |
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|
2355 // This methods does not know about blocks (Metablocks) |
6885 | 2356 MetaWord* SpaceManager::allocate_work(size_t word_size) { |
6725
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|
2357 assert_lock_strong(_lock); |
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|
2358 #ifdef ASSERT |
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|
2359 if (Metadebug::test_metadata_failure()) { |
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|
2360 return NULL; |
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|
2361 } |
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|
2362 #endif |
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|
2363 // Is there space in the current chunk? |
6885 | 2364 MetaWord* result = NULL; |
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|
2365 |
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2366 // For DumpSharedSpaces, only allocate out of the current chunk which is |
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|
2367 // never null because we gave it the size we wanted. Caller reports out |
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|
2368 // of memory if this returns null. |
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2369 if (DumpSharedSpaces) { |
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|
2370 assert(current_chunk() != NULL, "should never happen"); |
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2371 inc_used_metrics(word_size); |
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2372 return current_chunk()->allocate(word_size); // caller handles null result |
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|
2373 } |
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2374 if (current_chunk() != NULL) { |
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2375 result = current_chunk()->allocate(word_size); |
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|
2376 } |
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|
2377 |
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|
2378 if (result == NULL) { |
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|
2379 result = grow_and_allocate(word_size); |
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|
2380 } |
12056
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11966
diff
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|
2381 if (result != 0) { |
10183
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2382 inc_used_metrics(word_size); |
6885 | 2383 assert(result != (MetaWord*) chunks_in_use(MediumIndex), |
2384 "Head of the list is being allocated"); | |
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|
2385 } |
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|
2386 |
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|
2387 return result; |
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|
2388 } |
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|
2389 |
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|
2390 void SpaceManager::verify() { |
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|
2391 // If there are blocks in the dictionary, then |
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|
2392 // verfication of chunks does not work since |
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|
2393 // being in the dictionary alters a chunk. |
6885 | 2394 if (block_freelists()->total_size() == 0) { |
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2395 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
6725
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|
2396 Metachunk* curr = chunks_in_use(i); |
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|
2397 while (curr != NULL) { |
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|
2398 curr->verify(); |
7208
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|
2399 verify_chunk_size(curr); |
6725
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|
2400 curr = curr->next(); |
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|
2401 } |
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|
2402 } |
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|
2403 } |
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|
2404 } |
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|
2405 |
7208
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|
2406 void SpaceManager::verify_chunk_size(Metachunk* chunk) { |
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|
2407 assert(is_humongous(chunk->word_size()) || |
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2408 chunk->word_size() == medium_chunk_size() || |
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|
2409 chunk->word_size() == small_chunk_size() || |
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|
2410 chunk->word_size() == specialized_chunk_size(), |
7208
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|
2411 "Chunk size is wrong"); |
eade6b2e4782
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|
2412 return; |
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|
2413 } |
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|
2414 |
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|
2415 #ifdef ASSERT |
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2416 void SpaceManager::verify_allocated_blocks_words() { |
6725
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2417 // Verification is only guaranteed at a safepoint. |
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2418 assert(SafepointSynchronize::is_at_safepoint() || !Universe::is_fully_initialized(), |
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2419 "Verification can fail if the applications is running"); |
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2420 assert(allocated_blocks_words() == sum_used_in_chunks_in_use(), |
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|
2421 err_msg("allocation total is not consistent " SIZE_FORMAT |
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|
2422 " vs " SIZE_FORMAT, |
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2423 allocated_blocks_words(), sum_used_in_chunks_in_use())); |
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|
2424 } |
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|
2425 |
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|
2426 #endif |
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|
2427 |
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|
2428 void SpaceManager::dump(outputStream* const out) const { |
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|
2429 size_t curr_total = 0; |
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|
2430 size_t waste = 0; |
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|
2431 uint i = 0; |
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|
2432 size_t used = 0; |
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|
2433 size_t capacity = 0; |
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|
2434 |
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|
2435 // Add up statistics for all chunks in this SpaceManager. |
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|
2436 for (ChunkIndex index = ZeroIndex; |
6885 | 2437 index < NumberOfInUseLists; |
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2438 index = next_chunk_index(index)) { |
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|
2439 for (Metachunk* curr = chunks_in_use(index); |
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2440 curr != NULL; |
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|
2441 curr = curr->next()) { |
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|
2442 out->print("%d) ", i++); |
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|
2443 curr->print_on(out); |
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|
2444 if (TraceMetadataChunkAllocation && Verbose) { |
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|
2445 block_freelists()->print_on(out); |
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|
2446 } |
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|
2447 curr_total += curr->word_size(); |
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|
2448 used += curr->used_word_size(); |
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|
2449 capacity += curr->capacity_word_size(); |
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|
2450 waste += curr->free_word_size() + curr->overhead();; |
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|
2451 } |
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|
2452 } |
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|
2453 |
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|
2454 size_t free = current_chunk() == NULL ? 0 : current_chunk()->free_word_size(); |
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|
2455 // Free space isn't wasted. |
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|
2456 waste -= free; |
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|
2457 |
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|
2458 out->print_cr("total of all chunks " SIZE_FORMAT " used " SIZE_FORMAT |
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|
2459 " free " SIZE_FORMAT " capacity " SIZE_FORMAT |
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|
2460 " waste " SIZE_FORMAT, curr_total, used, free, capacity, waste); |
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|
2461 } |
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|
2462 |
7185
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|
2463 #ifndef PRODUCT |
6725
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|
2464 void SpaceManager::mangle_freed_chunks() { |
7446
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|
2465 for (ChunkIndex index = ZeroIndex; |
6885 | 2466 index < NumberOfInUseLists; |
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|
2467 index = next_chunk_index(index)) { |
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|
2468 for (Metachunk* curr = chunks_in_use(index); |
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|
2469 curr != NULL; |
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|
2470 curr = curr->next()) { |
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|
2471 curr->mangle(); |
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|
2472 } |
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|
2473 } |
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|
2474 } |
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|
2475 #endif // PRODUCT |
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|
2476 |
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|
2477 // MetaspaceAux |
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|
2478 |
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|
2479 |
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|
2480 size_t MetaspaceAux::_allocated_capacity_words[] = {0, 0}; |
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|
2481 size_t MetaspaceAux::_allocated_used_words[] = {0, 0}; |
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|
2482 |
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|
2483 size_t MetaspaceAux::free_bytes(Metaspace::MetadataType mdtype) { |
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|
2484 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
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|
2485 return list == NULL ? 0 : list->free_bytes(); |
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diff
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|
2486 } |
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|
2487 |
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|
2488 size_t MetaspaceAux::free_bytes() { |
12063
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diff
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|
2489 return free_bytes(Metaspace::ClassType) + free_bytes(Metaspace::NonClassType); |
10183
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|
2490 } |
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|
2491 |
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|
2492 void MetaspaceAux::dec_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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|
2493 assert_lock_strong(SpaceManager::expand_lock()); |
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|
2494 assert(words <= allocated_capacity_words(mdtype), |
10183
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10175
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|
2495 err_msg("About to decrement below 0: words " SIZE_FORMAT |
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8014862: Add fast Metasapce capacity and used per MetadataType
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|
2496 " is greater than _allocated_capacity_words[%u] " SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
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10191
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|
2497 words, mdtype, allocated_capacity_words(mdtype))); |
2b1a9d972fc2
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10191
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|
2498 _allocated_capacity_words[mdtype] -= words; |
10183
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|
2499 } |
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|
2500 |
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|
2501 void MetaspaceAux::inc_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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|
2502 assert_lock_strong(SpaceManager::expand_lock()); |
868d87ed63c8
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|
2503 // Needs to be atomic |
10330
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|
2504 _allocated_capacity_words[mdtype] += words; |
10183
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|
2505 } |
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|
2506 |
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|
2507 void MetaspaceAux::dec_used(Metaspace::MetadataType mdtype, size_t words) { |
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|
2508 assert(words <= allocated_used_words(mdtype), |
10183
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|
2509 err_msg("About to decrement below 0: words " SIZE_FORMAT |
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|
2510 " is greater than _allocated_used_words[%u] " SIZE_FORMAT, |
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|
2511 words, mdtype, allocated_used_words(mdtype))); |
10183
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|
2512 // For CMS deallocation of the Metaspaces occurs during the |
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|
2513 // sweep which is a concurrent phase. Protection by the expand_lock() |
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|
2514 // is not enough since allocation is on a per Metaspace basis |
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|
2515 // and protected by the Metaspace lock. |
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|
2516 jlong minus_words = (jlong) - (jlong) words; |
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|
2517 Atomic::add_ptr(minus_words, &_allocated_used_words[mdtype]); |
10183
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|
2518 } |
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|
2519 |
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|
2520 void MetaspaceAux::inc_used(Metaspace::MetadataType mdtype, size_t words) { |
10183
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|
2521 // _allocated_used_words tracks allocations for |
868d87ed63c8
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|
2522 // each piece of metadata. Those allocations are |
868d87ed63c8
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|
2523 // generally done concurrently by different application |
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|
2524 // threads so must be done atomically. |
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|
2525 Atomic::add_ptr(words, &_allocated_used_words[mdtype]); |
10183
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|
2526 } |
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|
2527 |
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|
2528 size_t MetaspaceAux::used_bytes_slow(Metaspace::MetadataType mdtype) { |
6730
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6726
diff
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|
2529 size_t used = 0; |
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|
2530 ClassLoaderDataGraphMetaspaceIterator iter; |
5d2156bcb78b
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6726
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|
2531 while (iter.repeat()) { |
5d2156bcb78b
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6726
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|
2532 Metaspace* msp = iter.get_next(); |
10183
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|
2533 // Sum allocated_blocks_words for each metaspace |
6730
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6726
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|
2534 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2535 used += msp->used_words_slow(mdtype); |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2536 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2537 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2538 return used * BytesPerWord; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2539 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2540 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2541 size_t MetaspaceAux::free_in_bytes(Metaspace::MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2542 size_t free = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2543 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2544 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2545 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2546 if (msp != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2547 free += msp->free_words(mdtype); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2548 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2549 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2550 return free * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2551 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2552 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2553 size_t MetaspaceAux::capacity_bytes_slow(Metaspace::MetadataType mdtype) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2554 if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2555 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2556 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2557 // 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
|
2558 // added to the capacity calculation as needed. |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2559 size_t capacity = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2560 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2561 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2562 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2563 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2564 capacity += msp->capacity_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2565 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2566 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2567 return capacity * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2568 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2569 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2570 size_t MetaspaceAux::reserved_in_bytes(Metaspace::MetadataType mdtype) { |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2571 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2572 return list == NULL ? 0 : list->virtual_space_total(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2573 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2574 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2575 size_t MetaspaceAux::min_chunk_size() { return Metaspace::first_chunk_word_size(); } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2576 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2577 size_t MetaspaceAux::free_chunks_total(Metaspace::MetadataType mdtype) { |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2578 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2579 if (list == NULL) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2580 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2581 } |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2582 ChunkManager* chunk = list->chunk_manager(); |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2583 chunk->slow_verify(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2584 return chunk->free_chunks_total(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2585 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2586 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2587 size_t MetaspaceAux::free_chunks_total_in_bytes(Metaspace::MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2588 return free_chunks_total(mdtype) * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2589 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2590 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2591 size_t MetaspaceAux::free_chunks_total() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2592 return free_chunks_total(Metaspace::ClassType) + |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2593 free_chunks_total(Metaspace::NonClassType); |
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 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2596 size_t MetaspaceAux::free_chunks_total_in_bytes() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2597 return free_chunks_total() * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2598 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2599 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2600 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
|
2601 gclog_or_tty->print(", [Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2602 if (PrintGCDetails && Verbose) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2603 gclog_or_tty->print(" " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2604 "->" SIZE_FORMAT |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2605 "(" SIZE_FORMAT ")", |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2606 prev_metadata_used, |
11037
df7e1c0e3dc1
8014546: MetaspaceAux print_metaspace_change() should print "used" after GC not capacity
jmasa
parents:
10376
diff
changeset
|
2607 allocated_used_bytes(), |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2608 reserved_in_bytes()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2609 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2610 gclog_or_tty->print(" " SIZE_FORMAT "K" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2611 "->" SIZE_FORMAT "K" |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2612 "(" SIZE_FORMAT "K)", |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2613 prev_metadata_used / K, |
11037
df7e1c0e3dc1
8014546: MetaspaceAux print_metaspace_change() should print "used" after GC not capacity
jmasa
parents:
10376
diff
changeset
|
2614 allocated_used_bytes() / K, |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2615 reserved_in_bytes()/ K); |
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 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2618 gclog_or_tty->print("]"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2619 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2620 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2621 // This is printed when PrintGCDetails |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2622 void MetaspaceAux::print_on(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2623 Metaspace::MetadataType nct = Metaspace::NonClassType; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2624 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2625 out->print_cr(" Metaspace total " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2626 SIZE_FORMAT "K, used " SIZE_FORMAT "K," |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2627 " reserved " SIZE_FORMAT "K", |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2628 allocated_capacity_bytes()/K, allocated_used_bytes()/K, reserved_in_bytes()/K); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2629 |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2630 out->print_cr(" data space " |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2631 SIZE_FORMAT "K, used " SIZE_FORMAT "K," |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2632 " reserved " SIZE_FORMAT "K", |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2633 allocated_capacity_bytes(nct)/K, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2634 allocated_used_bytes(nct)/K, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2635 reserved_in_bytes(nct)/K); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2636 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2637 Metaspace::MetadataType ct = Metaspace::ClassType; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2638 out->print_cr(" class space " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2639 SIZE_FORMAT "K, used " SIZE_FORMAT "K," |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2640 " reserved " SIZE_FORMAT "K", |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2641 allocated_capacity_bytes(ct)/K, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2642 allocated_used_bytes(ct)/K, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2643 reserved_in_bytes(ct)/K); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2644 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2645 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2646 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2647 // Print information for class space and data space separately. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2648 // This is almost the same as above. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2649 void MetaspaceAux::print_on(outputStream* out, Metaspace::MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2650 size_t free_chunks_capacity_bytes = free_chunks_total_in_bytes(mdtype); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2651 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
|
2652 size_t used_bytes = used_bytes_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2653 size_t free_bytes = free_in_bytes(mdtype); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2654 size_t used_and_free = used_bytes + free_bytes + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2655 free_chunks_capacity_bytes; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2656 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
|
2657 "K + unused in chunks " SIZE_FORMAT "K + " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2658 " capacity in free chunks " SIZE_FORMAT "K = " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2659 "K capacity in allocated chunks " SIZE_FORMAT "K", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2660 used_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2661 free_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2662 free_chunks_capacity_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2663 used_and_free / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2664 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
|
2665 // 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
|
2666 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
|
2667 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2668 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2669 // Print total fragmentation for class metaspaces |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2670 void MetaspaceAux::print_class_waste(outputStream* out) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2671 assert(Metaspace::using_class_space(), "class metaspace not used"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2672 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
|
2673 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
|
2674 ClassLoaderDataGraphMetaspaceIterator iter; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2675 while (iter.repeat()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2676 Metaspace* msp = iter.get_next(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2677 if (msp != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2678 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
|
2679 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
|
2680 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
|
2681 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
|
2682 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
|
2683 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
|
2684 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
|
2685 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2686 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2687 out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2688 SIZE_FORMAT " small(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2689 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2690 "large count " SIZE_FORMAT, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2691 cls_specialized_count, cls_specialized_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2692 cls_small_count, cls_small_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2693 cls_medium_count, cls_medium_waste, cls_humongous_count); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2694 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2695 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2696 // 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
|
2697 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
|
2698 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
|
2699 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
|
2700 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2701 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2702 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2703 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2704 if (msp != NULL) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2705 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
|
2706 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
|
2707 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
|
2708 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
|
2709 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
|
2710 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
|
2711 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
|
2712 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2713 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2714 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
|
2715 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
|
2716 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
|
2717 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
|
2718 "large count " SIZE_FORMAT, |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2719 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
|
2720 small_waste, medium_count, medium_waste, humongous_count); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2721 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2722 print_class_waste(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2723 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2724 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2725 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2726 // Dump global metaspace things from the end of ClassLoaderDataGraph |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2727 void MetaspaceAux::dump(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2728 out->print_cr("All Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2729 out->print("data space: "); print_on(out, Metaspace::NonClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2730 out->print("class space: "); print_on(out, Metaspace::ClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2731 print_waste(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2732 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2733 |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2734 void MetaspaceAux::verify_free_chunks() { |
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2735 Metaspace::space_list()->chunk_manager()->verify(); |
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::class_space_list()->chunk_manager()->verify(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2738 } |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2739 } |
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2740 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2741 void MetaspaceAux::verify_capacity() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2742 #ifdef ASSERT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2743 size_t running_sum_capacity_bytes = allocated_capacity_bytes(); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2744 // 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
|
2745 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
|
2746 assert(running_sum_capacity_bytes == capacity_in_use_bytes, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2747 err_msg("allocated_capacity_words() * BytesPerWord " SIZE_FORMAT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2748 " capacity_bytes_slow()" SIZE_FORMAT, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2749 running_sum_capacity_bytes, capacity_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2750 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2751 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2752 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2753 size_t capacity_in_use_bytes = capacity_bytes_slow(i); |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2754 assert(allocated_capacity_bytes(i) == capacity_in_use_bytes, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2755 err_msg("allocated_capacity_bytes(%u) " SIZE_FORMAT |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2756 " capacity_bytes_slow(%u)" SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2757 i, allocated_capacity_bytes(i), i, capacity_in_use_bytes)); |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2758 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2759 #endif |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2760 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2761 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2762 void MetaspaceAux::verify_used() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2763 #ifdef ASSERT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2764 size_t running_sum_used_bytes = allocated_used_bytes(); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2765 // 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
|
2766 size_t used_in_use_bytes = used_bytes_slow(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2767 assert(allocated_used_bytes() == used_in_use_bytes, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2768 err_msg("allocated_used_bytes() " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2769 " used_bytes_slow()" SIZE_FORMAT, |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2770 allocated_used_bytes(), used_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2771 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
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diff
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|
2772 i < Metaspace:: MetadataTypeCount; |
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
changeset
|
2773 i = (Metaspace::MetadataType)(i + 1)) { |
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2774 size_t used_in_use_bytes = used_bytes_slow(i); |
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10191
diff
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|
2775 assert(allocated_used_bytes(i) == used_in_use_bytes, |
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
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|
2776 err_msg("allocated_used_bytes(%u) " SIZE_FORMAT |
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8014862: Add fast Metasapce capacity and used per MetadataType
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parents:
10191
diff
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|
2777 " used_bytes_slow(%u)" SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
changeset
|
2778 i, allocated_used_bytes(i), i, used_in_use_bytes)); |
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jmasa
parents:
10191
diff
changeset
|
2779 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2780 #endif |
868d87ed63c8
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parents:
10175
diff
changeset
|
2781 } |
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2782 |
868d87ed63c8
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parents:
10175
diff
changeset
|
2783 void MetaspaceAux::verify_metrics() { |
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2784 verify_capacity(); |
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2785 verify_used(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2786 } |
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2787 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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parents:
10175
diff
changeset
|
2788 |
6725
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2789 // Metaspace methods |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2790 |
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diff
changeset
|
2791 size_t Metaspace::_first_chunk_word_size = 0; |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
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7435
diff
changeset
|
2792 size_t Metaspace::_first_class_chunk_word_size = 0; |
e51c9860cf66
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7435
diff
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|
2793 |
e51c9860cf66
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parents:
7435
diff
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|
2794 Metaspace::Metaspace(Mutex* lock, MetaspaceType type) { |
e51c9860cf66
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7435
diff
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|
2795 initialize(lock, type); |
6725
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2796 } |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2797 |
da91efe96a93
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parents:
diff
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|
2798 Metaspace::~Metaspace() { |
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diff
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|
2799 delete _vsm; |
12056
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|
2800 if (using_class_space()) { |
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11966
diff
changeset
|
2801 delete _class_vsm; |
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11966
diff
changeset
|
2802 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2803 } |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2804 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2805 VirtualSpaceList* Metaspace::_space_list = NULL; |
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diff
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|
2806 VirtualSpaceList* Metaspace::_class_space_list = NULL; |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2807 |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2808 #define VIRTUALSPACEMULTIPLIER 2 |
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parents:
diff
changeset
|
2809 |
12056
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8003424: Enable Class Data Sharing for CompressedOops
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parents:
11966
diff
changeset
|
2810 #ifdef _LP64 |
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parents:
11966
diff
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|
2811 void Metaspace::set_narrow_klass_base_and_shift(address metaspace_base, address cds_base) { |
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11966
diff
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|
2812 // Figure out the narrow_klass_base and the narrow_klass_shift. The |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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11966
diff
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|
2813 // narrow_klass_base is the lower of the metaspace base and the cds base |
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8003424: Enable Class Data Sharing for CompressedOops
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11966
diff
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|
2814 // (if cds is enabled). The narrow_klass_shift depends on the distance |
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hseigel
parents:
11966
diff
changeset
|
2815 // between the lower base and higher address. |
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parents:
11966
diff
changeset
|
2816 address lower_base; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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parents:
11966
diff
changeset
|
2817 address higher_address; |
740e263c80c6
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parents:
11966
diff
changeset
|
2818 if (UseSharedSpaces) { |
740e263c80c6
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parents:
11966
diff
changeset
|
2819 higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2820 (address)(metaspace_base + class_metaspace_size())); |
740e263c80c6
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hseigel
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11966
diff
changeset
|
2821 lower_base = MIN2(metaspace_base, cds_base); |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2822 } else { |
740e263c80c6
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11966
diff
changeset
|
2823 higher_address = metaspace_base + class_metaspace_size(); |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2824 lower_base = metaspace_base; |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2825 } |
740e263c80c6
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parents:
11966
diff
changeset
|
2826 Universe::set_narrow_klass_base(lower_base); |
740e263c80c6
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hseigel
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11966
diff
changeset
|
2827 if ((uint64_t)(higher_address - lower_base) < (uint64_t)max_juint) { |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2828 Universe::set_narrow_klass_shift(0); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2829 } else { |
740e263c80c6
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parents:
11966
diff
changeset
|
2830 assert(!UseSharedSpaces, "Cannot shift with UseSharedSpaces"); |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2831 Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2832 } |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2833 } |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2834 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2835 // 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
|
2836 // to work with compressed klass pointers. |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2837 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
|
2838 assert(cds_base != 0 && UseSharedSpaces, "Only use with CDS"); |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2839 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2840 address lower_base = MIN2((address)metaspace_base, cds_base); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2841 address higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2842 (address)(metaspace_base + class_metaspace_size())); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2843 return ((uint64_t)(higher_address - lower_base) < (uint64_t)max_juint); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2844 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2845 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2846 // Try to allocate the metaspace at the requested addr. |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2847 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
|
2848 assert(using_class_space(), "called improperly"); |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2849 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2850 assert(class_metaspace_size() < KlassEncodingMetaspaceMax, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2851 "Metaspace size is too big"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2852 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2853 ReservedSpace metaspace_rs = ReservedSpace(class_metaspace_size(), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2854 os::vm_allocation_granularity(), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2855 false, requested_addr, 0); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2856 if (!metaspace_rs.is_reserved()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2857 if (UseSharedSpaces) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2858 // Keep trying to allocate the metaspace, increasing the requested_addr |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2859 // by 1GB each time, until we reach an address that will no longer allow |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2860 // use of CDS with compressed klass pointers. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2861 char *addr = requested_addr; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2862 while (!metaspace_rs.is_reserved() && (addr + 1*G > addr) && |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2863 can_use_cds_with_metaspace_addr(addr + 1*G, cds_base)) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2864 addr = addr + 1*G; |
740e263c80c6
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parents:
11966
diff
changeset
|
2865 metaspace_rs = ReservedSpace(class_metaspace_size(), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
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11966
diff
changeset
|
2866 os::vm_allocation_granularity(), false, addr, 0); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2867 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2868 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2869 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2870 // If no successful allocation then try to allocate the space anywhere. If |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2871 // that fails then OOM doom. At this point we cannot try allocating the |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2872 // metaspace as if UseCompressedClassPointers is off because too much |
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2873 // initialization has happened that depends on UseCompressedClassPointers. |
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2874 // So, UseCompressedClassPointers cannot be turned off at this point. |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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11966
diff
changeset
|
2875 if (!metaspace_rs.is_reserved()) { |
740e263c80c6
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11966
diff
changeset
|
2876 metaspace_rs = ReservedSpace(class_metaspace_size(), |
740e263c80c6
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11966
diff
changeset
|
2877 os::vm_allocation_granularity(), false); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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11966
diff
changeset
|
2878 if (!metaspace_rs.is_reserved()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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11966
diff
changeset
|
2879 vm_exit_during_initialization(err_msg("Could not allocate metaspace: %d bytes", |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2880 class_metaspace_size())); |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2881 } |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2882 } |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2883 } |
740e263c80c6
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11966
diff
changeset
|
2884 |
740e263c80c6
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11966
diff
changeset
|
2885 // If we got here then the metaspace got allocated. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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11966
diff
changeset
|
2886 MemTracker::record_virtual_memory_type((address)metaspace_rs.base(), mtClass); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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parents:
11966
diff
changeset
|
2887 |
740e263c80c6
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parents:
11966
diff
changeset
|
2888 // Verify that we can use shared spaces. Otherwise, turn off CDS. |
740e263c80c6
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hseigel
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11966
diff
changeset
|
2889 if (UseSharedSpaces && !can_use_cds_with_metaspace_addr(metaspace_rs.base(), cds_base)) { |
740e263c80c6
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diff
changeset
|
2890 FileMapInfo::stop_sharing_and_unmap( |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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11966
diff
changeset
|
2891 "Could not allocate metaspace at a compatible address"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2892 } |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2893 |
740e263c80c6
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11966
diff
changeset
|
2894 set_narrow_klass_base_and_shift((address)metaspace_rs.base(), |
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2895 UseSharedSpaces ? (address)cds_base : 0); |
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|
2896 |
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|
2897 initialize_class_space(metaspace_rs); |
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|
2898 |
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diff
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|
2899 if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) { |
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|
2900 gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: " SIZE_FORMAT, |
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|
2901 Universe::narrow_klass_base(), Universe::narrow_klass_shift()); |
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|
2902 gclog_or_tty->print_cr("Metaspace Size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT, |
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|
2903 class_metaspace_size(), metaspace_rs.base(), requested_addr); |
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changeset
|
2904 } |
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|
2905 } |
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|
2906 |
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|
2907 // For UseCompressedClassPointers the class space is reserved above the top of |
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|
2908 // the Java heap. The argument passed in is at the base of the compressed space. |
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|
2909 void Metaspace::initialize_class_space(ReservedSpace rs) { |
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|
2910 // The reserved space size may be bigger because of alignment, esp with UseLargePages |
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2911 assert(rs.size() >= CompressedClassSpaceSize, |
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|
2912 err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize)); |
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2913 assert(using_class_space(), "Must be using class space"); |
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2914 _class_space_list = new VirtualSpaceList(rs); |
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diff
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|
2915 } |
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|
2916 |
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|
2917 #endif |
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|
2918 |
6725
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|
2919 void Metaspace::global_initialize() { |
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diff
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|
2920 // Initialize the alignment for shared spaces. |
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|
2921 int max_alignment = os::vm_page_size(); |
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|
2922 size_t cds_total = 0; |
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|
2923 |
12226
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2924 set_class_metaspace_size(align_size_up(CompressedClassSpaceSize, |
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|
2925 os::vm_allocation_granularity())); |
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|
2926 |
6725
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|
2927 MetaspaceShared::set_max_alignment(max_alignment); |
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|
2928 |
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diff
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|
2929 if (DumpSharedSpaces) { |
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|
2930 SharedReadOnlySize = align_size_up(SharedReadOnlySize, max_alignment); |
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|
2931 SharedReadWriteSize = align_size_up(SharedReadWriteSize, max_alignment); |
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2932 SharedMiscDataSize = align_size_up(SharedMiscDataSize, max_alignment); |
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|
2933 SharedMiscCodeSize = align_size_up(SharedMiscCodeSize, max_alignment); |
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|
2934 |
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|
2935 // Initialize with the sum of the shared space sizes. The read-only |
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parents:
diff
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|
2936 // and read write metaspace chunks will be allocated out of this and the |
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diff
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|
2937 // remainder is the misc code and data chunks. |
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|
2938 cds_total = FileMapInfo::shared_spaces_size(); |
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|
2939 _space_list = new VirtualSpaceList(cds_total/wordSize); |
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|
2940 |
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diff
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|
2941 #ifdef _LP64 |
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|
2942 // Set the compressed klass pointer base so that decoding of these pointers works |
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|
2943 // properly when creating the shared archive. |
12226
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|
2944 assert(UseCompressedOops && UseCompressedClassPointers, |
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|
2945 "UseCompressedOops and UseCompressedClassPointers must be set"); |
12056
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|
2946 Universe::set_narrow_klass_base((address)_space_list->current_virtual_space()->bottom()); |
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|
2947 if (TraceMetavirtualspaceAllocation && Verbose) { |
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diff
changeset
|
2948 gclog_or_tty->print_cr("Setting_narrow_klass_base to Address: " PTR_FORMAT, |
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changeset
|
2949 _space_list->current_virtual_space()->bottom()); |
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11966
diff
changeset
|
2950 } |
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parents:
11966
diff
changeset
|
2951 |
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diff
changeset
|
2952 // Set the shift to zero. |
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11966
diff
changeset
|
2953 assert(class_metaspace_size() < (uint64_t)(max_juint) - cds_total, |
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11966
diff
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|
2954 "CDS region is too large"); |
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11966
diff
changeset
|
2955 Universe::set_narrow_klass_shift(0); |
740e263c80c6
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diff
changeset
|
2956 #endif |
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diff
changeset
|
2957 |
6725
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parents:
diff
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|
2958 } else { |
da91efe96a93
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parents:
diff
changeset
|
2959 // If using shared space, open the file that contains the shared space |
da91efe96a93
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parents:
diff
changeset
|
2960 // and map in the memory before initializing the rest of metaspace (so |
da91efe96a93
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parents:
diff
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|
2961 // the addresses don't conflict) |
12056
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|
2962 address cds_address = NULL; |
6725
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parents:
diff
changeset
|
2963 if (UseSharedSpaces) { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2964 FileMapInfo* mapinfo = new FileMapInfo(); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2965 memset(mapinfo, 0, sizeof(FileMapInfo)); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2966 |
da91efe96a93
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parents:
diff
changeset
|
2967 // Open the shared archive file, read and validate the header. If |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2968 // initialization fails, shared spaces [UseSharedSpaces] are |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2969 // disabled and the file is closed. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2970 // Map in spaces now also |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2971 if (mapinfo->initialize() && MetaspaceShared::map_shared_spaces(mapinfo)) { |
da91efe96a93
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parents:
diff
changeset
|
2972 FileMapInfo::set_current_info(mapinfo); |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2973 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2974 assert(!mapinfo->is_open() && !UseSharedSpaces, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2975 "archive file not closed or shared spaces not disabled."); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2976 } |
12056
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|
2977 cds_total = FileMapInfo::shared_spaces_size(); |
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diff
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|
2978 cds_address = (address)mapinfo->region_base(0); |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2979 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2980 |
12056
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diff
changeset
|
2981 #ifdef _LP64 |
12226
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12110
diff
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|
2982 // If UseCompressedClassPointers is set then allocate the metaspace area |
12056
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diff
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|
2983 // above the heap and above the CDS area (if it exists). |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2984 if (using_class_space()) { |
740e263c80c6
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parents:
11966
diff
changeset
|
2985 if (UseSharedSpaces) { |
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parents:
11966
diff
changeset
|
2986 allocate_metaspace_compressed_klass_ptrs((char *)(cds_address + cds_total), cds_address); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
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|
2987 } else { |
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parents:
11966
diff
changeset
|
2988 allocate_metaspace_compressed_klass_ptrs((char *)CompressedKlassPointersBase, 0); |
740e263c80c6
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hseigel
parents:
11966
diff
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|
2989 } |
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parents:
11966
diff
changeset
|
2990 } |
740e263c80c6
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hseigel
parents:
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diff
changeset
|
2991 #endif |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2992 |
7446
e51c9860cf66
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jmasa
parents:
7435
diff
changeset
|
2993 // Initialize these before initializing the VirtualSpaceList |
6725
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coleenp
parents:
diff
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|
2994 _first_chunk_word_size = InitialBootClassLoaderMetaspaceSize / BytesPerWord; |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2995 _first_chunk_word_size = align_word_size_up(_first_chunk_word_size); |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2996 // Make the first class chunk bigger than a medium chunk so it's not put |
e51c9860cf66
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jmasa
parents:
7435
diff
changeset
|
2997 // on the medium chunk list. The next chunk will be small and progress |
e51c9860cf66
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jmasa
parents:
7435
diff
changeset
|
2998 // from there. This size calculated by -version. |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
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|
2999 _first_class_chunk_word_size = MIN2((size_t)MediumChunk*6, |
12226
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|
3000 (CompressedClassSpaceSize/BytesPerWord)*2); |
7446
e51c9860cf66
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jmasa
parents:
7435
diff
changeset
|
3001 _first_class_chunk_word_size = align_word_size_up(_first_class_chunk_word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3002 // Arbitrarily set the initial virtual space to a multiple |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3003 // of the boot class loader size. |
7446
e51c9860cf66
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jmasa
parents:
7435
diff
changeset
|
3004 size_t word_size = VIRTUALSPACEMULTIPLIER * first_chunk_word_size(); |
6725
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coleenp
parents:
diff
changeset
|
3005 // Initialize the list of virtual spaces. |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3006 _space_list = new VirtualSpaceList(word_size); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3007 } |
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coleenp
parents:
diff
changeset
|
3008 } |
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parents:
diff
changeset
|
3009 |
12056
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diff
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|
3010 void Metaspace::initialize(Mutex* lock, MetaspaceType type) { |
6725
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coleenp
parents:
diff
changeset
|
3011 |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3012 assert(space_list() != NULL, |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3013 "Metadata VirtualSpaceList has not been initialized"); |
da91efe96a93
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parents:
diff
changeset
|
3014 |
12056
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diff
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|
3015 _vsm = new SpaceManager(NonClassType, lock, space_list()); |
6725
da91efe96a93
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coleenp
parents:
diff
changeset
|
3016 if (_vsm == NULL) { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3017 return; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3018 } |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3019 size_t word_size; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3020 size_t class_word_size; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3021 vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3022 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3023 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3024 assert(class_space_list() != NULL, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3025 "Class VirtualSpaceList has not been initialized"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3026 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3027 // Allocate SpaceManager for classes. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3028 _class_vsm = new SpaceManager(ClassType, lock, class_space_list()); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3029 if (_class_vsm == NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3030 return; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3031 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3032 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3033 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3034 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
|
3035 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3036 // Allocate chunk for metadata objects |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3037 Metachunk* new_chunk = |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3038 space_list()->get_initialization_chunk(word_size, |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3039 vsm()->medium_chunk_bunch()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3040 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
|
3041 if (new_chunk != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3042 // 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
|
3043 vsm()->add_chunk(new_chunk, true); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3044 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3045 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3046 // Allocate chunk for class metadata objects |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3047 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3048 Metachunk* class_chunk = |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3049 class_space_list()->get_initialization_chunk(class_word_size, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3050 class_vsm()->medium_chunk_bunch()); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3051 if (class_chunk != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3052 class_vsm()->add_chunk(class_chunk, true); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3053 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3054 } |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3055 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3056 _alloc_record_head = NULL; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3057 _alloc_record_tail = NULL; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3058 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3059 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3060 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
|
3061 size_t byte_size = word_size * wordSize; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3062 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
|
3063 } |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3064 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3065 MetaWord* Metaspace::allocate(size_t word_size, MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3066 // DumpSharedSpaces doesn't use class metadata area (yet) |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3067 // Also, don't use class_vsm() unless UseCompressedClassPointers is true. |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3068 if (mdtype == ClassType && using_class_space()) { |
6885 | 3069 return class_vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3070 } else { |
6885 | 3071 return vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3072 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3073 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3074 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3075 MetaWord* Metaspace::expand_and_allocate(size_t word_size, MetadataType mdtype) { |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3076 MetaWord* result; |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3077 MetaspaceGC::set_expand_after_GC(true); |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3078 size_t before_inc = MetaspaceGC::capacity_until_GC(); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3079 size_t delta_bytes = MetaspaceGC::delta_capacity_until_GC(word_size) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3080 MetaspaceGC::inc_capacity_until_GC(delta_bytes); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3081 if (PrintGCDetails && Verbose) { |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3082 gclog_or_tty->print_cr("Increase capacity to GC from " SIZE_FORMAT |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3083 " to " SIZE_FORMAT, before_inc, MetaspaceGC::capacity_until_GC()); |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3084 } |
6885 | 3085 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3086 result = allocate(word_size, mdtype); |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3087 |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3088 return result; |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3089 } |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3090 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3091 // Space allocated in the Metaspace. This may |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3092 // be across several metadata virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3093 char* Metaspace::bottom() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3094 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
|
3095 return (char*)vsm()->current_chunk()->bottom(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3096 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3097 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3098 size_t Metaspace::used_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3099 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3100 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
|
3101 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3102 return vsm()->sum_used_in_chunks_in_use(); // includes overhead! |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3103 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3104 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3105 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3106 size_t Metaspace::free_words(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3107 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3108 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
|
3109 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3110 return vsm()->sum_free_in_chunks_in_use(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3111 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3112 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3113 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3114 // Space capacity in the Metaspace. It includes |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3115 // space in the list of chunks from which allocations |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3116 // 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
|
3117 // in the space available in the dictionary which |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3118 // is already counted in some chunk. |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3119 size_t Metaspace::capacity_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3120 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3121 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
|
3122 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3123 return vsm()->sum_capacity_in_chunks_in_use(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3124 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3125 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3126 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3127 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
|
3128 return used_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3129 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3130 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3131 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
|
3132 return capacity_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3133 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3134 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3135 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
|
3136 if (SafepointSynchronize::is_at_safepoint()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3137 assert(Thread::current()->is_VM_thread(), "should be the VM thread"); |
6885 | 3138 // 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
|
3139 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
6885 | 3140 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
3141 // Dark matter. Too small for dictionary. | |
3142 #ifdef ASSERT | |
3143 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3144 #endif | |
3145 return; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3146 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3147 if (is_class && using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3148 class_vsm()->deallocate(ptr, word_size); |
6885 | 3149 } else { |
3150 vsm()->deallocate(ptr, word_size); | |
3151 } | |
6725
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diff
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|
3152 } 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
|
3153 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
6725
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diff
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|
3154 |
6885 | 3155 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
3156 // Dark matter. Too small for dictionary. | |
3157 #ifdef ASSERT | |
3158 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3159 #endif | |
3160 return; | |
6725
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diff
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|
3161 } |
12056
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|
3162 if (is_class && using_class_space()) { |
6885 | 3163 class_vsm()->deallocate(ptr, word_size); |
3164 } else { | |
3165 vsm()->deallocate(ptr, word_size); | |
3166 } | |
6725
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|
3167 } |
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diff
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|
3168 } |
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diff
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|
3169 |
6885 | 3170 Metablock* Metaspace::allocate(ClassLoaderData* loader_data, size_t word_size, |
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3171 bool read_only, MetaspaceObj::Type type, TRAPS) { |
6725
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diff
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|
3172 if (HAS_PENDING_EXCEPTION) { |
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diff
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|
3173 assert(false, "Should not allocate with exception pending"); |
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coleenp
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diff
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|
3174 return NULL; // caller does a CHECK_NULL too |
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diff
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|
3175 } |
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|
3176 |
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3177 MetadataType mdtype = (type == MetaspaceObj::ClassType) ? ClassType : NonClassType; |
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3178 |
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|
3179 // SSS: Should we align the allocations and make sure the sizes are aligned. |
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diff
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|
3180 MetaWord* result = NULL; |
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diff
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|
3181 |
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|
3182 assert(loader_data != NULL, "Should never pass around a NULL loader_data. " |
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|
3183 "ClassLoaderData::the_null_class_loader_data() should have been used."); |
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|
3184 // Allocate in metaspaces without taking out a lock, because it deadlocks |
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diff
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|
3185 // with the SymbolTable_lock. Dumping is single threaded for now. We'll have |
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diff
changeset
|
3186 // to revisit this for application class data sharing. |
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|
3187 if (DumpSharedSpaces) { |
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3188 assert(type > MetaspaceObj::UnknownType && type < MetaspaceObj::_number_of_types, "sanity"); |
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3189 Metaspace* space = read_only ? loader_data->ro_metaspace() : loader_data->rw_metaspace(); |
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3190 result = space->allocate(word_size, NonClassType); |
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|
3191 if (result == NULL) { |
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|
3192 report_out_of_shared_space(read_only ? SharedReadOnly : SharedReadWrite); |
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|
3193 } else { |
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|
3194 space->record_allocation(result, type, space->vsm()->get_raw_word_size(word_size)); |
6725
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|
3195 } |
6885 | 3196 return Metablock::initialize(result, word_size); |
6725
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|
3197 } |
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|
3198 |
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|
3199 result = loader_data->metaspace_non_null()->allocate(word_size, mdtype); |
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|
3200 |
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diff
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|
3201 if (result == NULL) { |
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parents:
diff
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|
3202 // Try to clean out some memory and retry. |
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diff
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|
3203 result = |
6885 | 3204 Universe::heap()->collector_policy()->satisfy_failed_metadata_allocation( |
6725
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|
3205 loader_data, word_size, mdtype); |
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diff
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|
3206 |
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|
3207 // If result is still null, we are out of memory. |
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|
3208 if (result == NULL) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
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|
3209 if (Verbose && TraceMetadataChunkAllocation) { |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
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|
3210 gclog_or_tty->print_cr("Metaspace allocation failed for size " |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3211 SIZE_FORMAT, word_size); |
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
|
3212 if (loader_data->metaspace_or_null() != NULL) loader_data->dump(gclog_or_tty); |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
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7435
diff
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|
3213 MetaspaceAux::dump(gclog_or_tty); |
e51c9860cf66
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|
3214 } |
6725
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diff
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|
3215 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3216 const char* space_string = (mdtype == ClassType) ? "Compressed class space" : |
11064
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coleenp
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10376
diff
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|
3217 "Metadata space"; |
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8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
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10376
diff
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|
3218 report_java_out_of_memory(space_string); |
6725
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|
3219 |
da91efe96a93
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diff
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|
3220 if (JvmtiExport::should_post_resource_exhausted()) { |
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diff
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|
3221 JvmtiExport::post_resource_exhausted( |
da91efe96a93
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coleenp
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diff
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|
3222 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR, |
11064
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coleenp
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10376
diff
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|
3223 space_string); |
6725
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|
3224 } |
11064
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coleenp
parents:
10376
diff
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|
3225 if (mdtype == ClassType) { |
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8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
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10376
diff
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|
3226 THROW_OOP_0(Universe::out_of_memory_error_class_metaspace()); |
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10376
diff
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|
3227 } else { |
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coleenp
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10376
diff
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|
3228 THROW_OOP_0(Universe::out_of_memory_error_metaspace()); |
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10376
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|
3229 } |
6725
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diff
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|
3230 } |
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diff
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|
3231 } |
6885 | 3232 return Metablock::initialize(result, word_size); |
6725
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coleenp
parents:
diff
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|
3233 } |
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diff
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|
3234 |
10376
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|
3235 void Metaspace::record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size) { |
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|
3236 assert(DumpSharedSpaces, "sanity"); |
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|
3237 |
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|
3238 AllocRecord *rec = new AllocRecord((address)ptr, type, (int)word_size * HeapWordSize); |
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|
3239 if (_alloc_record_head == NULL) { |
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|
3240 _alloc_record_head = _alloc_record_tail = rec; |
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|
3241 } else { |
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|
3242 _alloc_record_tail->_next = rec; |
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|
3243 _alloc_record_tail = rec; |
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|
3244 } |
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|
3245 } |
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|
3246 |
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|
3247 void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) { |
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|
3248 assert(DumpSharedSpaces, "unimplemented for !DumpSharedSpaces"); |
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|
3249 |
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diff
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|
3250 address last_addr = (address)bottom(); |
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|
3251 |
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|
3252 for (AllocRecord *rec = _alloc_record_head; rec; rec = rec->_next) { |
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10330
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|
3253 address ptr = rec->_ptr; |
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|
3254 if (last_addr < ptr) { |
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|
3255 closure->doit(last_addr, MetaspaceObj::UnknownType, ptr - last_addr); |
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|
3256 } |
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|
3257 closure->doit(ptr, rec->_type, rec->_byte_size); |
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|
3258 last_addr = ptr + rec->_byte_size; |
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|
3259 } |
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|
3260 |
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|
3261 address top = ((address)bottom()) + used_bytes_slow(Metaspace::NonClassType); |
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3262 if (last_addr < top) { |
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|
3263 closure->doit(last_addr, MetaspaceObj::UnknownType, top - last_addr); |
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|
3264 } |
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|
3265 } |
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|
3266 |
10175 | 3267 void Metaspace::purge() { |
3268 MutexLockerEx cl(SpaceManager::expand_lock(), | |
3269 Mutex::_no_safepoint_check_flag); | |
3270 space_list()->purge(); | |
12056
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diff
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|
3271 if (using_class_space()) { |
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diff
changeset
|
3272 class_space_list()->purge(); |
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|
3273 } |
10175 | 3274 } |
3275 | |
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|
3276 void Metaspace::print_on(outputStream* out) const { |
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diff
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|
3277 // Print both class virtual space counts and metaspace. |
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|
3278 if (Verbose) { |
12056
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diff
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|
3279 vsm()->print_on(out); |
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|
3280 if (using_class_space()) { |
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|
3281 class_vsm()->print_on(out); |
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|
3282 } |
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|
3283 } |
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|
3284 } |
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|
3285 |
7176
59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
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6969
diff
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|
3286 bool Metaspace::contains(const void * ptr) { |
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|
3287 if (MetaspaceShared::is_in_shared_space(ptr)) { |
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|
3288 return true; |
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3289 } |
7176
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3290 // This is checked while unlocked. As long as the virtualspaces are added |
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3291 // at the end, the pointer will be in one of them. The virtual spaces |
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3292 // aren't deleted presently. When they are, some sort of locking might |
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3293 // be needed. Note, locking this can cause inversion problems with the |
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3294 // caller in MetaspaceObj::is_metadata() function. |
10175 | 3295 return space_list()->contains(ptr) || |
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3296 (using_class_space() && class_space_list()->contains(ptr)); |
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3297 } |
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3298 |
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3299 void Metaspace::verify() { |
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3300 vsm()->verify(); |
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3301 if (using_class_space()) { |
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3302 class_vsm()->verify(); |
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3303 } |
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3304 } |
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3305 |
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3306 void Metaspace::dump(outputStream* const out) const { |
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3307 out->print_cr("\nVirtual space manager: " INTPTR_FORMAT, vsm()); |
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3308 vsm()->dump(out); |
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3309 if (using_class_space()) { |
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3310 out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm()); |
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3311 class_vsm()->dump(out); |
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3312 } |
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3313 } |