Mercurial > hg > graal-compiler
annotate src/share/vm/memory/metaspace.cpp @ 12831:087f02e22fc2
8025854: Use "young gen" instead of "eden"
Summary: Changed a few descriptions and variable names to young gen.
Reviewed-by: tschatzl, jcoomes
author | jwilhelm |
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date | Fri, 04 Oct 2013 22:08:37 +0200 |
parents | bc918fd1e584 |
children | 85c1ca43713f |
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/allocation.hpp" |
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27 #include "memory/binaryTreeDictionary.hpp" |
6885 | 28 #include "memory/freeList.hpp" |
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29 #include "memory/collectorPolicy.hpp" |
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30 #include "memory/filemap.hpp" |
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31 #include "memory/freeList.hpp" |
6885 | 32 #include "memory/metablock.hpp" |
33 #include "memory/metachunk.hpp" | |
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34 #include "memory/metaspace.hpp" |
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35 #include "memory/metaspaceShared.hpp" |
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36 #include "memory/resourceArea.hpp" |
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37 #include "memory/universe.hpp" |
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38 #include "runtime/globals.hpp" |
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39 #include "runtime/java.hpp" |
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40 #include "runtime/mutex.hpp" |
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41 #include "runtime/orderAccess.hpp" |
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42 #include "services/memTracker.hpp" |
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43 #include "utilities/copy.hpp" |
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44 #include "utilities/debug.hpp" |
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45 |
6885 | 46 typedef BinaryTreeDictionary<Metablock, FreeList> BlockTreeDictionary; |
47 typedef BinaryTreeDictionary<Metachunk, FreeList> ChunkTreeDictionary; | |
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48 // Define this macro to enable slow integrity checking of |
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49 // the free chunk lists |
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50 const bool metaspace_slow_verify = false; |
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51 |
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52 // Parameters for stress mode testing |
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53 const uint metadata_deallocate_a_lot_block = 10; |
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54 const uint metadata_deallocate_a_lock_chunk = 3; |
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55 size_t const allocation_from_dictionary_limit = 4 * K; |
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56 |
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57 MetaWord* last_allocated = 0; |
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58 |
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59 size_t Metaspace::_class_metaspace_size; |
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60 |
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61 // Used in declarations in SpaceManager and ChunkManager |
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62 enum ChunkIndex { |
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63 ZeroIndex = 0, |
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64 SpecializedIndex = ZeroIndex, |
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65 SmallIndex = SpecializedIndex + 1, |
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66 MediumIndex = SmallIndex + 1, |
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67 HumongousIndex = MediumIndex + 1, |
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68 NumberOfFreeLists = 3, |
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69 NumberOfInUseLists = 4 |
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70 }; |
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71 |
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72 enum ChunkSizes { // in words. |
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73 ClassSpecializedChunk = 128, |
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74 SpecializedChunk = 128, |
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75 ClassSmallChunk = 256, |
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76 SmallChunk = 512, |
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77 ClassMediumChunk = 4 * K, |
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78 MediumChunk = 8 * K, |
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79 HumongousChunkGranularity = 8 |
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80 }; |
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81 |
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82 static ChunkIndex next_chunk_index(ChunkIndex i) { |
6885 | 83 assert(i < NumberOfInUseLists, "Out of bound"); |
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84 return (ChunkIndex) (i+1); |
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85 } |
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86 |
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87 // Originally _capacity_until_GC was set to MetaspaceSize here but |
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88 // the default MetaspaceSize before argument processing was being |
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89 // used which was not the desired value. See the code |
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90 // in should_expand() to see how the initialization is handled |
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91 // now. |
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92 size_t MetaspaceGC::_capacity_until_GC = 0; |
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93 bool MetaspaceGC::_expand_after_GC = false; |
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94 uint MetaspaceGC::_shrink_factor = 0; |
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95 bool MetaspaceGC::_should_concurrent_collect = false; |
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96 |
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97 // Blocks of space for metadata are allocated out of Metachunks. |
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98 // |
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99 // Metachunk are allocated out of MetadataVirtualspaces and once |
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100 // allocated there is no explicit link between a Metachunk and |
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101 // the MetadataVirtualspaces from which it was allocated. |
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102 // |
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103 // Each SpaceManager maintains a |
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104 // list of the chunks it is using and the current chunk. The current |
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105 // chunk is the chunk from which allocations are done. Space freed in |
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106 // a chunk is placed on the free list of blocks (BlockFreelist) and |
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107 // reused from there. |
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108 |
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109 typedef class FreeList<Metachunk> ChunkList; |
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110 |
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111 // Manages the global free lists of chunks. |
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112 // Has three lists of free chunks, and a total size and |
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113 // count that includes all three |
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114 |
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115 class ChunkManager : public CHeapObj<mtInternal> { |
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116 |
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117 // Free list of chunks of different sizes. |
10175 | 118 // SpecializedChunk |
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119 // SmallChunk |
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120 // MediumChunk |
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121 // HumongousChunk |
6885 | 122 ChunkList _free_chunks[NumberOfFreeLists]; |
123 | |
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124 |
6885 | 125 // HumongousChunk |
126 ChunkTreeDictionary _humongous_dictionary; | |
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127 |
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128 // ChunkManager in all lists of this type |
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129 size_t _free_chunks_total; |
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130 size_t _free_chunks_count; |
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131 |
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132 void dec_free_chunks_total(size_t v) { |
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133 assert(_free_chunks_count > 0 && |
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134 _free_chunks_total > 0, |
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135 "About to go negative"); |
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136 Atomic::add_ptr(-1, &_free_chunks_count); |
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137 jlong minus_v = (jlong) - (jlong) v; |
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138 Atomic::add_ptr(minus_v, &_free_chunks_total); |
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139 } |
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140 |
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141 // Debug support |
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142 |
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143 size_t sum_free_chunks(); |
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144 size_t sum_free_chunks_count(); |
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145 |
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146 void locked_verify_free_chunks_total(); |
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147 void slow_locked_verify_free_chunks_total() { |
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148 if (metaspace_slow_verify) { |
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149 locked_verify_free_chunks_total(); |
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150 } |
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151 } |
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152 void locked_verify_free_chunks_count(); |
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153 void slow_locked_verify_free_chunks_count() { |
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154 if (metaspace_slow_verify) { |
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155 locked_verify_free_chunks_count(); |
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156 } |
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157 } |
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158 void verify_free_chunks_count(); |
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159 |
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160 public: |
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161 |
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162 ChunkManager(size_t specialized_size, size_t small_size, size_t medium_size) |
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163 : _free_chunks_total(0), _free_chunks_count(0) { |
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164 _free_chunks[SpecializedIndex].set_size(specialized_size); |
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165 _free_chunks[SmallIndex].set_size(small_size); |
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166 _free_chunks[MediumIndex].set_size(medium_size); |
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167 } |
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168 |
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169 // add or delete (return) a chunk to the global freelist. |
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170 Metachunk* chunk_freelist_allocate(size_t word_size); |
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171 void chunk_freelist_deallocate(Metachunk* chunk); |
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172 |
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173 // Map a size to a list index assuming that there are lists |
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174 // for special, small, medium, and humongous chunks. |
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175 static ChunkIndex list_index(size_t size); |
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176 |
10175 | 177 // Remove the chunk from its freelist. It is |
178 // expected to be on one of the _free_chunks[] lists. | |
179 void remove_chunk(Metachunk* chunk); | |
180 | |
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181 // Add the simple linked list of chunks to the freelist of chunks |
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182 // of type index. |
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183 void return_chunks(ChunkIndex index, Metachunk* chunks); |
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184 |
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185 // Total of the space in the free chunks list |
12235 | 186 size_t free_chunks_total_words(); |
187 size_t free_chunks_total_bytes(); | |
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188 |
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189 // Number of chunks in the free chunks list |
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190 size_t free_chunks_count(); |
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191 |
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192 void inc_free_chunks_total(size_t v, size_t count = 1) { |
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193 Atomic::add_ptr(count, &_free_chunks_count); |
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194 Atomic::add_ptr(v, &_free_chunks_total); |
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195 } |
6885 | 196 ChunkTreeDictionary* humongous_dictionary() { |
197 return &_humongous_dictionary; | |
198 } | |
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199 |
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200 ChunkList* free_chunks(ChunkIndex index); |
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201 |
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202 // Returns the list for the given chunk word size. |
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203 ChunkList* find_free_chunks_list(size_t word_size); |
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204 |
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205 // Add and remove from a list by size. Selects |
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206 // list based on size of chunk. |
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207 void free_chunks_put(Metachunk* chuck); |
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208 Metachunk* free_chunks_get(size_t chunk_word_size); |
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209 |
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210 // Debug support |
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211 void verify(); |
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212 void slow_verify() { |
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213 if (metaspace_slow_verify) { |
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214 verify(); |
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215 } |
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216 } |
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217 void locked_verify(); |
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218 void slow_locked_verify() { |
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219 if (metaspace_slow_verify) { |
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220 locked_verify(); |
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221 } |
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222 } |
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223 void verify_free_chunks_total(); |
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224 |
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225 void locked_print_free_chunks(outputStream* st); |
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226 void locked_print_sum_free_chunks(outputStream* st); |
6885 | 227 |
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228 void print_on(outputStream* st) const; |
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229 }; |
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230 |
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231 // Used to manage the free list of Metablocks (a block corresponds |
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232 // to the allocation of a quantum of metadata). |
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233 class BlockFreelist VALUE_OBJ_CLASS_SPEC { |
6885 | 234 BlockTreeDictionary* _dictionary; |
235 static Metablock* initialize_free_chunk(MetaWord* p, size_t word_size); | |
236 | |
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237 // Only allocate and split from freelist if the size of the allocation |
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238 // is at least 1/4th the size of the available block. |
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239 const static int WasteMultiplier = 4; |
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240 |
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241 // Accessors |
6885 | 242 BlockTreeDictionary* dictionary() const { return _dictionary; } |
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243 |
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244 public: |
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245 BlockFreelist(); |
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246 ~BlockFreelist(); |
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247 |
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248 // Get and return a block to the free list |
6885 | 249 MetaWord* get_block(size_t word_size); |
250 void return_block(MetaWord* p, size_t word_size); | |
251 | |
252 size_t total_size() { | |
253 if (dictionary() == NULL) { | |
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254 return 0; |
6885 | 255 } else { |
256 return dictionary()->total_size(); | |
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257 } |
6885 | 258 } |
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259 |
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260 void print_on(outputStream* st) const; |
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261 }; |
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262 |
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263 class VirtualSpaceNode : public CHeapObj<mtClass> { |
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264 friend class VirtualSpaceList; |
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265 |
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266 // Link to next VirtualSpaceNode |
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267 VirtualSpaceNode* _next; |
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268 |
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269 // total in the VirtualSpace |
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270 MemRegion _reserved; |
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271 ReservedSpace _rs; |
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272 VirtualSpace _virtual_space; |
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273 MetaWord* _top; |
10175 | 274 // count of chunks contained in this VirtualSpace |
275 uintx _container_count; | |
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276 |
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277 // Convenience functions to access the _virtual_space |
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278 char* low() const { return virtual_space()->low(); } |
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279 char* high() const { return virtual_space()->high(); } |
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280 |
10175 | 281 // The first Metachunk will be allocated at the bottom of the |
282 // VirtualSpace | |
283 Metachunk* first_chunk() { return (Metachunk*) bottom(); } | |
284 | |
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285 public: |
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286 |
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287 VirtualSpaceNode(size_t byte_size); |
10175 | 288 VirtualSpaceNode(ReservedSpace rs) : _top(NULL), _next(NULL), _rs(rs), _container_count(0) {} |
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289 ~VirtualSpaceNode(); |
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290 |
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291 // Convenience functions for logical bottom and end |
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292 MetaWord* bottom() const { return (MetaWord*) _virtual_space.low(); } |
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293 MetaWord* end() const { return (MetaWord*) _virtual_space.high(); } |
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294 |
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295 size_t reserved_words() const { return _virtual_space.reserved_size() / BytesPerWord; } |
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296 size_t expanded_words() const { return _virtual_space.committed_size() / BytesPerWord; } |
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297 size_t committed_words() const { return _virtual_space.actual_committed_size() / BytesPerWord; } |
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298 |
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299 // address of next available space in _virtual_space; |
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300 // Accessors |
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301 VirtualSpaceNode* next() { return _next; } |
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302 void set_next(VirtualSpaceNode* v) { _next = v; } |
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303 |
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304 void set_reserved(MemRegion const v) { _reserved = v; } |
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305 void set_top(MetaWord* v) { _top = v; } |
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306 |
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307 // Accessors |
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308 MemRegion* reserved() { return &_reserved; } |
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309 VirtualSpace* virtual_space() const { return (VirtualSpace*) &_virtual_space; } |
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310 |
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311 // Returns true if "word_size" is available in the VirtualSpace |
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312 bool is_available(size_t word_size) { return _top + word_size <= end(); } |
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313 |
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314 MetaWord* top() const { return _top; } |
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315 void inc_top(size_t word_size) { _top += word_size; } |
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316 |
10175 | 317 uintx container_count() { return _container_count; } |
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318 void inc_container_count(); |
10175 | 319 void dec_container_count(); |
320 #ifdef ASSERT | |
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321 uint container_count_slow(); |
10175 | 322 void verify_container_count(); |
323 #endif | |
324 | |
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325 // used and capacity in this single entry in the list |
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326 size_t used_words_in_vs() const; |
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327 size_t capacity_words_in_vs() const; |
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328 size_t free_words_in_vs() const; |
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329 |
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330 bool initialize(); |
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331 |
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332 // get space from the virtual space |
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333 Metachunk* take_from_committed(size_t chunk_word_size); |
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334 |
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335 // Allocate a chunk from the virtual space and return it. |
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336 Metachunk* get_chunk_vs(size_t chunk_word_size); |
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337 |
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338 // Expands/shrinks the committed space in a virtual space. Delegates |
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339 // to Virtualspace |
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340 bool expand_by(size_t words, bool pre_touch = false); |
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341 |
10175 | 342 // In preparation for deleting this node, remove all the chunks |
343 // in the node from any freelist. | |
344 void purge(ChunkManager* chunk_manager); | |
345 | |
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346 #ifdef ASSERT |
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347 // Debug support |
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348 void mangle(); |
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349 #endif |
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350 |
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351 void print_on(outputStream* st) const; |
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352 }; |
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353 |
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354 // byte_size is the size of the associated virtualspace. |
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355 VirtualSpaceNode::VirtualSpaceNode(size_t byte_size) : _top(NULL), _next(NULL), _rs(), _container_count(0) { |
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356 // align up to vm allocation granularity |
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357 byte_size = align_size_up(byte_size, os::vm_allocation_granularity()); |
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358 |
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359 // This allocates memory with mmap. For DumpSharedspaces, try to reserve |
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360 // configurable address, generally at the top of the Java heap so other |
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361 // memory addresses don't conflict. |
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362 if (DumpSharedSpaces) { |
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363 char* shared_base = (char*)SharedBaseAddress; |
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364 _rs = ReservedSpace(byte_size, 0, false, shared_base, 0); |
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365 if (_rs.is_reserved()) { |
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366 assert(shared_base == 0 || _rs.base() == shared_base, "should match"); |
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367 } else { |
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368 // Get a mmap region anywhere if the SharedBaseAddress fails. |
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369 _rs = ReservedSpace(byte_size); |
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370 } |
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371 MetaspaceShared::set_shared_rs(&_rs); |
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372 } else { |
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373 _rs = ReservedSpace(byte_size); |
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374 } |
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375 |
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376 MemTracker::record_virtual_memory_type((address)_rs.base(), mtClass); |
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377 } |
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378 |
10175 | 379 void VirtualSpaceNode::purge(ChunkManager* chunk_manager) { |
380 Metachunk* chunk = first_chunk(); | |
381 Metachunk* invalid_chunk = (Metachunk*) top(); | |
382 while (chunk < invalid_chunk ) { | |
383 assert(chunk->is_free(), "Should be marked free"); | |
384 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
385 chunk_manager->remove_chunk(chunk); | |
386 assert(chunk->next() == NULL && | |
387 chunk->prev() == NULL, | |
388 "Was not removed from its list"); | |
389 chunk = (Metachunk*) next; | |
390 } | |
391 } | |
392 | |
393 #ifdef ASSERT | |
394 uint VirtualSpaceNode::container_count_slow() { | |
395 uint count = 0; | |
396 Metachunk* chunk = first_chunk(); | |
397 Metachunk* invalid_chunk = (Metachunk*) top(); | |
398 while (chunk < invalid_chunk ) { | |
399 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
400 // Don't count the chunks on the free lists. Those are | |
401 // still part of the VirtualSpaceNode but not currently | |
402 // counted. | |
403 if (!chunk->is_free()) { | |
404 count++; | |
405 } | |
406 chunk = (Metachunk*) next; | |
407 } | |
408 return count; | |
409 } | |
410 #endif | |
411 | |
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412 // List of VirtualSpaces for metadata allocation. |
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413 // It has a _next link for singly linked list and a MemRegion |
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414 // for total space in the VirtualSpace. |
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415 class VirtualSpaceList : public CHeapObj<mtClass> { |
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416 friend class VirtualSpaceNode; |
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417 |
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418 enum VirtualSpaceSizes { |
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419 VirtualSpaceSize = 256 * K |
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420 }; |
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421 |
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422 // Global list of virtual spaces |
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423 // Head of the list |
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424 VirtualSpaceNode* _virtual_space_list; |
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425 // virtual space currently being used for allocations |
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426 VirtualSpaceNode* _current_virtual_space; |
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427 |
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428 // Can this virtual list allocate >1 spaces? Also, used to determine |
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429 // whether to allocate unlimited small chunks in this virtual space |
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430 bool _is_class; |
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431 bool can_grow() const { return !is_class() || !UseCompressedClassPointers; } |
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432 |
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433 // Sum of reserved and committed memory in the virtual spaces |
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434 size_t _reserved_words; |
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435 size_t _committed_words; |
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436 |
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437 // Number of virtual spaces |
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438 size_t _virtual_space_count; |
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439 |
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440 ~VirtualSpaceList(); |
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441 |
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442 VirtualSpaceNode* virtual_space_list() const { return _virtual_space_list; } |
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443 |
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444 void set_virtual_space_list(VirtualSpaceNode* v) { |
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445 _virtual_space_list = v; |
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446 } |
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447 void set_current_virtual_space(VirtualSpaceNode* v) { |
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448 _current_virtual_space = v; |
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449 } |
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450 |
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451 void link_vs(VirtualSpaceNode* new_entry); |
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452 |
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453 // Get another virtual space and add it to the list. This |
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454 // is typically prompted by a failed attempt to allocate a chunk |
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455 // and is typically followed by the allocation of a chunk. |
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456 bool grow_vs(size_t vs_word_size); |
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457 |
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458 public: |
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459 VirtualSpaceList(size_t word_size); |
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460 VirtualSpaceList(ReservedSpace rs); |
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461 |
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462 size_t free_bytes(); |
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463 |
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464 Metachunk* get_new_chunk(size_t word_size, |
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465 size_t grow_chunks_by_words, |
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466 size_t medium_chunk_bunch); |
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467 |
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468 bool expand_by(VirtualSpaceNode* node, size_t word_size, bool pre_touch = false); |
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469 |
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470 // Get the first chunk for a Metaspace. Used for |
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471 // special cases such as the boot class loader, reflection |
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472 // class loader and anonymous class loader. |
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473 Metachunk* get_initialization_chunk(size_t word_size, size_t chunk_bunch); |
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474 |
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475 VirtualSpaceNode* current_virtual_space() { |
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476 return _current_virtual_space; |
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477 } |
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478 |
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479 bool is_class() const { return _is_class; } |
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480 |
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481 // Allocate the first virtualspace. |
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482 void initialize(size_t word_size); |
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483 |
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484 size_t reserved_words() { return _reserved_words; } |
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485 size_t reserved_bytes() { return reserved_words() * BytesPerWord; } |
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486 size_t committed_words() { return _committed_words; } |
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487 size_t committed_bytes() { return committed_words() * BytesPerWord; } |
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488 |
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489 void inc_reserved_words(size_t v); |
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490 void dec_reserved_words(size_t v); |
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491 void inc_committed_words(size_t v); |
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492 void dec_committed_words(size_t v); |
10175 | 493 void inc_virtual_space_count(); |
494 void dec_virtual_space_count(); | |
495 | |
496 // Unlink empty VirtualSpaceNodes and free it. | |
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497 void purge(ChunkManager* chunk_manager); |
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498 |
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499 bool contains(const void *ptr); |
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500 |
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501 void print_on(outputStream* st) const; |
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502 |
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503 class VirtualSpaceListIterator : public StackObj { |
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504 VirtualSpaceNode* _virtual_spaces; |
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505 public: |
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506 VirtualSpaceListIterator(VirtualSpaceNode* virtual_spaces) : |
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507 _virtual_spaces(virtual_spaces) {} |
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508 |
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509 bool repeat() { |
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510 return _virtual_spaces != NULL; |
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511 } |
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512 |
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513 VirtualSpaceNode* get_next() { |
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514 VirtualSpaceNode* result = _virtual_spaces; |
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515 if (_virtual_spaces != NULL) { |
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516 _virtual_spaces = _virtual_spaces->next(); |
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517 } |
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518 return result; |
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519 } |
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520 }; |
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521 }; |
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522 |
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523 class Metadebug : AllStatic { |
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524 // Debugging support for Metaspaces |
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525 static int _deallocate_block_a_lot_count; |
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526 static int _deallocate_chunk_a_lot_count; |
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527 static int _allocation_fail_alot_count; |
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528 |
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529 public: |
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530 static int deallocate_block_a_lot_count() { |
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531 return _deallocate_block_a_lot_count; |
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532 } |
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533 static void set_deallocate_block_a_lot_count(int v) { |
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534 _deallocate_block_a_lot_count = v; |
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535 } |
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536 static void inc_deallocate_block_a_lot_count() { |
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537 _deallocate_block_a_lot_count++; |
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538 } |
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539 static int deallocate_chunk_a_lot_count() { |
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540 return _deallocate_chunk_a_lot_count; |
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541 } |
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542 static void reset_deallocate_chunk_a_lot_count() { |
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543 _deallocate_chunk_a_lot_count = 1; |
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544 } |
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545 static void inc_deallocate_chunk_a_lot_count() { |
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546 _deallocate_chunk_a_lot_count++; |
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547 } |
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548 |
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549 static void init_allocation_fail_alot_count(); |
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550 #ifdef ASSERT |
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551 static bool test_metadata_failure(); |
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552 #endif |
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553 |
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554 static void deallocate_chunk_a_lot(SpaceManager* sm, |
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555 size_t chunk_word_size); |
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556 static void deallocate_block_a_lot(SpaceManager* sm, |
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557 size_t chunk_word_size); |
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558 |
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559 }; |
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560 |
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561 int Metadebug::_deallocate_block_a_lot_count = 0; |
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562 int Metadebug::_deallocate_chunk_a_lot_count = 0; |
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563 int Metadebug::_allocation_fail_alot_count = 0; |
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564 |
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565 // SpaceManager - used by Metaspace to handle allocations |
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566 class SpaceManager : public CHeapObj<mtClass> { |
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567 friend class Metaspace; |
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568 friend class Metadebug; |
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569 |
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570 private: |
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571 |
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572 // protects allocations and contains. |
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573 Mutex* const _lock; |
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574 |
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575 // Type of metadata allocated. |
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576 Metaspace::MetadataType _mdtype; |
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577 |
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578 // List of chunks in use by this SpaceManager. Allocations |
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579 // are done from the current chunk. The list is used for deallocating |
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580 // chunks when the SpaceManager is freed. |
6885 | 581 Metachunk* _chunks_in_use[NumberOfInUseLists]; |
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582 Metachunk* _current_chunk; |
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583 |
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584 // Number of small chunks to allocate to a manager |
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585 // If class space manager, small chunks are unlimited |
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586 static uint const _small_chunk_limit; |
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587 |
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588 // Sum of all space in allocated chunks |
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589 size_t _allocated_blocks_words; |
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590 |
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591 // Sum of all allocated chunks |
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592 size_t _allocated_chunks_words; |
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593 size_t _allocated_chunks_count; |
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594 |
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595 // Free lists of blocks are per SpaceManager since they |
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596 // are assumed to be in chunks in use by the SpaceManager |
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597 // and all chunks in use by a SpaceManager are freed when |
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598 // the class loader using the SpaceManager is collected. |
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599 BlockFreelist _block_freelists; |
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600 |
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601 // protects virtualspace and chunk expansions |
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602 static const char* _expand_lock_name; |
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603 static const int _expand_lock_rank; |
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604 static Mutex* const _expand_lock; |
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605 |
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606 private: |
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607 // Accessors |
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608 Metachunk* chunks_in_use(ChunkIndex index) const { return _chunks_in_use[index]; } |
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609 void set_chunks_in_use(ChunkIndex index, Metachunk* v) { _chunks_in_use[index] = v; } |
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610 |
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611 BlockFreelist* block_freelists() const { |
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612 return (BlockFreelist*) &_block_freelists; |
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613 } |
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614 |
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615 Metaspace::MetadataType mdtype() { return _mdtype; } |
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616 |
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617 VirtualSpaceList* vs_list() const { return Metaspace::get_space_list(_mdtype); } |
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618 ChunkManager* chunk_manager() const { return Metaspace::get_chunk_manager(_mdtype); } |
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619 |
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620 Metachunk* current_chunk() const { return _current_chunk; } |
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621 void set_current_chunk(Metachunk* v) { |
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622 _current_chunk = v; |
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623 } |
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624 |
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625 Metachunk* find_current_chunk(size_t word_size); |
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626 |
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627 // Add chunk to the list of chunks in use |
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628 void add_chunk(Metachunk* v, bool make_current); |
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629 void retire_current_chunk(); |
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630 |
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631 Mutex* lock() const { return _lock; } |
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632 |
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633 const char* chunk_size_name(ChunkIndex index) const; |
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634 |
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635 protected: |
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636 void initialize(); |
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637 |
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638 public: |
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639 SpaceManager(Metaspace::MetadataType mdtype, |
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640 Mutex* lock); |
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641 ~SpaceManager(); |
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642 |
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643 enum ChunkMultiples { |
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644 MediumChunkMultiple = 4 |
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645 }; |
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646 |
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647 bool is_class() { return _mdtype == Metaspace::ClassType; } |
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648 |
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649 // Accessors |
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650 size_t specialized_chunk_size() { return SpecializedChunk; } |
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651 size_t small_chunk_size() { return (size_t) is_class() ? ClassSmallChunk : SmallChunk; } |
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652 size_t medium_chunk_size() { return (size_t) is_class() ? ClassMediumChunk : MediumChunk; } |
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653 size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; } |
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654 |
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655 size_t allocated_blocks_words() const { return _allocated_blocks_words; } |
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656 size_t allocated_blocks_bytes() const { return _allocated_blocks_words * BytesPerWord; } |
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657 size_t allocated_chunks_words() const { return _allocated_chunks_words; } |
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658 size_t allocated_chunks_count() const { return _allocated_chunks_count; } |
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659 |
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660 bool is_humongous(size_t word_size) { return word_size > medium_chunk_size(); } |
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661 |
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662 static Mutex* expand_lock() { return _expand_lock; } |
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663 |
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664 // Increment the per Metaspace and global running sums for Metachunks |
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665 // by the given size. This is used when a Metachunk to added to |
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666 // the in-use list. |
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667 void inc_size_metrics(size_t words); |
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668 // Increment the per Metaspace and global running sums Metablocks by the given |
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669 // size. This is used when a Metablock is allocated. |
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670 void inc_used_metrics(size_t words); |
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671 // Delete the portion of the running sums for this SpaceManager. That is, |
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672 // the globals running sums for the Metachunks and Metablocks are |
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673 // decremented for all the Metachunks in-use by this SpaceManager. |
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674 void dec_total_from_size_metrics(); |
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675 |
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676 // Set the sizes for the initial chunks. |
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677 void get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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678 size_t* chunk_word_size, |
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679 size_t* class_chunk_word_size); |
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680 |
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681 size_t sum_capacity_in_chunks_in_use() const; |
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682 size_t sum_used_in_chunks_in_use() const; |
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683 size_t sum_free_in_chunks_in_use() const; |
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684 size_t sum_waste_in_chunks_in_use() const; |
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685 size_t sum_waste_in_chunks_in_use(ChunkIndex index ) const; |
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686 |
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687 size_t sum_count_in_chunks_in_use(); |
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688 size_t sum_count_in_chunks_in_use(ChunkIndex i); |
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689 |
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690 Metachunk* get_new_chunk(size_t word_size, size_t grow_chunks_by_words); |
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691 |
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692 // Block allocation and deallocation. |
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693 // Allocates a block from the current chunk |
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694 MetaWord* allocate(size_t word_size); |
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695 |
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696 // Helper for allocations |
6885 | 697 MetaWord* allocate_work(size_t word_size); |
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698 |
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699 // Returns a block to the per manager freelist |
6885 | 700 void deallocate(MetaWord* p, size_t word_size); |
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701 |
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702 // Based on the allocation size and a minimum chunk size, |
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703 // returned chunk size (for expanding space for chunk allocation). |
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704 size_t calc_chunk_size(size_t allocation_word_size); |
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705 |
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706 // Called when an allocation from the current chunk fails. |
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707 // Gets a new chunk (may require getting a new virtual space), |
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708 // and allocates from that chunk. |
6885 | 709 MetaWord* grow_and_allocate(size_t word_size); |
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710 |
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711 // debugging support. |
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712 |
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713 void dump(outputStream* const out) const; |
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714 void print_on(outputStream* st) const; |
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715 void locked_print_chunks_in_use_on(outputStream* st) const; |
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716 |
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717 void verify(); |
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718 void verify_chunk_size(Metachunk* chunk); |
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719 NOT_PRODUCT(void mangle_freed_chunks();) |
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720 #ifdef ASSERT |
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721 void verify_allocated_blocks_words(); |
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722 #endif |
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723 |
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724 size_t get_raw_word_size(size_t word_size) { |
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725 // If only the dictionary is going to be used (i.e., no |
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726 // indexed free list), then there is a minimum size requirement. |
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727 // MinChunkSize is a placeholder for the real minimum size JJJ |
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728 size_t byte_size = word_size * BytesPerWord; |
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729 |
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730 size_t raw_bytes_size = MAX2(byte_size, |
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731 Metablock::min_block_byte_size()); |
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732 raw_bytes_size = ARENA_ALIGN(raw_bytes_size); |
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733 size_t raw_word_size = raw_bytes_size / BytesPerWord; |
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734 assert(raw_word_size * BytesPerWord == raw_bytes_size, "Size problem"); |
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735 |
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736 return raw_word_size; |
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737 } |
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738 }; |
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739 |
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740 uint const SpaceManager::_small_chunk_limit = 4; |
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741 |
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742 const char* SpaceManager::_expand_lock_name = |
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743 "SpaceManager chunk allocation lock"; |
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744 const int SpaceManager::_expand_lock_rank = Monitor::leaf - 1; |
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745 Mutex* const SpaceManager::_expand_lock = |
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746 new Mutex(SpaceManager::_expand_lock_rank, |
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747 SpaceManager::_expand_lock_name, |
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748 Mutex::_allow_vm_block_flag); |
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749 |
10175 | 750 void VirtualSpaceNode::inc_container_count() { |
751 assert_lock_strong(SpaceManager::expand_lock()); | |
752 _container_count++; | |
753 assert(_container_count == container_count_slow(), | |
754 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
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755 " container_count_slow() " SIZE_FORMAT, |
10175 | 756 _container_count, container_count_slow())); |
757 } | |
758 | |
759 void VirtualSpaceNode::dec_container_count() { | |
760 assert_lock_strong(SpaceManager::expand_lock()); | |
761 _container_count--; | |
762 } | |
763 | |
764 #ifdef ASSERT | |
765 void VirtualSpaceNode::verify_container_count() { | |
766 assert(_container_count == container_count_slow(), | |
767 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
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768 " container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow())); |
10175 | 769 } |
770 #endif | |
771 | |
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772 // BlockFreelist methods |
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773 |
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774 BlockFreelist::BlockFreelist() : _dictionary(NULL) {} |
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775 |
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776 BlockFreelist::~BlockFreelist() { |
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777 if (_dictionary != NULL) { |
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778 if (Verbose && TraceMetadataChunkAllocation) { |
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779 _dictionary->print_free_lists(gclog_or_tty); |
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780 } |
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781 delete _dictionary; |
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782 } |
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783 } |
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784 |
6885 | 785 Metablock* BlockFreelist::initialize_free_chunk(MetaWord* p, size_t word_size) { |
786 Metablock* block = (Metablock*) p; | |
787 block->set_word_size(word_size); | |
788 block->set_prev(NULL); | |
789 block->set_next(NULL); | |
790 | |
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791 return block; |
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792 } |
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793 |
6885 | 794 void BlockFreelist::return_block(MetaWord* p, size_t word_size) { |
795 Metablock* free_chunk = initialize_free_chunk(p, word_size); | |
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796 if (dictionary() == NULL) { |
6885 | 797 _dictionary = new BlockTreeDictionary(); |
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798 } |
6885 | 799 dictionary()->return_chunk(free_chunk); |
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800 } |
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801 |
6885 | 802 MetaWord* BlockFreelist::get_block(size_t word_size) { |
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803 if (dictionary() == NULL) { |
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804 return NULL; |
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805 } |
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806 |
6885 | 807 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
808 // Dark matter. Too small for dictionary. | |
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809 return NULL; |
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810 } |
6885 | 811 |
812 Metablock* free_block = | |
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813 dictionary()->get_chunk(word_size, FreeBlockDictionary<Metablock>::atLeast); |
6885 | 814 if (free_block == NULL) { |
815 return NULL; | |
816 } | |
817 | |
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818 const size_t block_size = free_block->size(); |
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819 if (block_size > WasteMultiplier * word_size) { |
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820 return_block((MetaWord*)free_block, block_size); |
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821 return NULL; |
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822 } |
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823 |
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824 MetaWord* new_block = (MetaWord*)free_block; |
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825 assert(block_size >= word_size, "Incorrect size of block from freelist"); |
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826 const size_t unused = block_size - word_size; |
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827 if (unused >= TreeChunk<Metablock, FreeList>::min_size()) { |
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828 return_block(new_block + word_size, unused); |
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829 } |
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830 |
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831 return new_block; |
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832 } |
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833 |
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834 void BlockFreelist::print_on(outputStream* st) const { |
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835 if (dictionary() == NULL) { |
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836 return; |
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837 } |
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838 dictionary()->print_free_lists(st); |
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839 } |
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840 |
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841 // VirtualSpaceNode methods |
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842 |
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843 VirtualSpaceNode::~VirtualSpaceNode() { |
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844 _rs.release(); |
10175 | 845 #ifdef ASSERT |
846 size_t word_size = sizeof(*this) / BytesPerWord; | |
847 Copy::fill_to_words((HeapWord*) this, word_size, 0xf1f1f1f1); | |
848 #endif | |
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849 } |
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850 |
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851 size_t VirtualSpaceNode::used_words_in_vs() const { |
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852 return pointer_delta(top(), bottom(), sizeof(MetaWord)); |
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853 } |
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854 |
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855 // Space committed in the VirtualSpace |
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856 size_t VirtualSpaceNode::capacity_words_in_vs() const { |
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857 return pointer_delta(end(), bottom(), sizeof(MetaWord)); |
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858 } |
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859 |
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860 size_t VirtualSpaceNode::free_words_in_vs() const { |
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861 return pointer_delta(end(), top(), sizeof(MetaWord)); |
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862 } |
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863 |
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864 // Allocates the chunk from the virtual space only. |
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865 // This interface is also used internally for debugging. Not all |
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866 // chunks removed here are necessarily used for allocation. |
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867 Metachunk* VirtualSpaceNode::take_from_committed(size_t chunk_word_size) { |
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868 // Bottom of the new chunk |
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869 MetaWord* chunk_limit = top(); |
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870 assert(chunk_limit != NULL, "Not safe to call this method"); |
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871 |
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872 if (!is_available(chunk_word_size)) { |
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873 if (TraceMetadataChunkAllocation) { |
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874 gclog_or_tty->print("VirtualSpaceNode::take_from_committed() not available %d words ", chunk_word_size); |
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875 // Dump some information about the virtual space that is nearly full |
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876 print_on(gclog_or_tty); |
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877 } |
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878 return NULL; |
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879 } |
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880 |
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881 // Take the space (bump top on the current virtual space). |
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882 inc_top(chunk_word_size); |
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883 |
10175 | 884 // Initialize the chunk |
885 Metachunk* result = ::new (chunk_limit) Metachunk(chunk_word_size, this); | |
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886 return result; |
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887 } |
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888 |
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889 |
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890 // Expand the virtual space (commit more of the reserved space) |
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891 bool VirtualSpaceNode::expand_by(size_t words, bool pre_touch) { |
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892 size_t bytes = words * BytesPerWord; |
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893 bool result = virtual_space()->expand_by(bytes, pre_touch); |
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894 if (TraceMetavirtualspaceAllocation && !result) { |
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895 gclog_or_tty->print_cr("VirtualSpaceNode::expand_by() failed " |
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896 "for byte size " SIZE_FORMAT, bytes); |
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897 virtual_space()->print_on(gclog_or_tty); |
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898 } |
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899 return result; |
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900 } |
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901 |
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902 Metachunk* VirtualSpaceNode::get_chunk_vs(size_t chunk_word_size) { |
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903 assert_lock_strong(SpaceManager::expand_lock()); |
10175 | 904 Metachunk* result = take_from_committed(chunk_word_size); |
905 if (result != NULL) { | |
906 inc_container_count(); | |
907 } | |
908 return result; | |
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909 } |
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910 |
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911 bool VirtualSpaceNode::initialize() { |
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912 |
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913 if (!_rs.is_reserved()) { |
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914 return false; |
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915 } |
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916 |
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917 // An allocation out of this Virtualspace that is larger |
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918 // than an initial commit size can waste that initial committed |
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919 // space. |
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920 size_t committed_byte_size = 0; |
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921 bool result = virtual_space()->initialize(_rs, committed_byte_size); |
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922 if (result) { |
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923 set_top((MetaWord*)virtual_space()->low()); |
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924 set_reserved(MemRegion((HeapWord*)_rs.base(), |
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925 (HeapWord*)(_rs.base() + _rs.size()))); |
6726
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926 |
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927 assert(reserved()->start() == (HeapWord*) _rs.base(), |
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928 err_msg("Reserved start was not set properly " PTR_FORMAT |
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929 " != " PTR_FORMAT, reserved()->start(), _rs.base())); |
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930 assert(reserved()->word_size() == _rs.size() / BytesPerWord, |
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931 err_msg("Reserved size was not set properly " SIZE_FORMAT |
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932 " != " SIZE_FORMAT, reserved()->word_size(), |
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933 _rs.size() / BytesPerWord)); |
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934 } |
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935 |
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936 return result; |
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937 } |
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938 |
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939 void VirtualSpaceNode::print_on(outputStream* st) const { |
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940 size_t used = used_words_in_vs(); |
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941 size_t capacity = capacity_words_in_vs(); |
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942 VirtualSpace* vs = virtual_space(); |
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943 st->print_cr(" space @ " PTR_FORMAT " " SIZE_FORMAT "K, %3d%% used " |
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944 "[" PTR_FORMAT ", " PTR_FORMAT ", " |
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945 PTR_FORMAT ", " PTR_FORMAT ")", |
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946 vs, capacity / K, |
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947 capacity == 0 ? 0 : used * 100 / capacity, |
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948 bottom(), top(), end(), |
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949 vs->high_boundary()); |
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950 } |
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951 |
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952 #ifdef ASSERT |
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953 void VirtualSpaceNode::mangle() { |
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954 size_t word_size = capacity_words_in_vs(); |
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955 Copy::fill_to_words((HeapWord*) low(), word_size, 0xf1f1f1f1); |
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956 } |
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957 #endif // ASSERT |
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958 |
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959 // VirtualSpaceList methods |
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960 // Space allocated from the VirtualSpace |
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961 |
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962 VirtualSpaceList::~VirtualSpaceList() { |
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963 VirtualSpaceListIterator iter(virtual_space_list()); |
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964 while (iter.repeat()) { |
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965 VirtualSpaceNode* vsl = iter.get_next(); |
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966 delete vsl; |
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967 } |
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968 } |
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969 |
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970 void VirtualSpaceList::inc_reserved_words(size_t v) { |
10175 | 971 assert_lock_strong(SpaceManager::expand_lock()); |
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972 _reserved_words = _reserved_words + v; |
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973 } |
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974 void VirtualSpaceList::dec_reserved_words(size_t v) { |
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975 assert_lock_strong(SpaceManager::expand_lock()); |
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976 _reserved_words = _reserved_words - v; |
10175 | 977 } |
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978 |
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979 void VirtualSpaceList::inc_committed_words(size_t v) { |
10175 | 980 assert_lock_strong(SpaceManager::expand_lock()); |
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981 _committed_words = _committed_words + v; |
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982 } |
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983 void VirtualSpaceList::dec_committed_words(size_t v) { |
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984 assert_lock_strong(SpaceManager::expand_lock()); |
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985 _committed_words = _committed_words - v; |
10175 | 986 } |
987 | |
988 void VirtualSpaceList::inc_virtual_space_count() { | |
989 assert_lock_strong(SpaceManager::expand_lock()); | |
990 _virtual_space_count++; | |
991 } | |
992 void VirtualSpaceList::dec_virtual_space_count() { | |
993 assert_lock_strong(SpaceManager::expand_lock()); | |
994 _virtual_space_count--; | |
995 } | |
996 | |
997 void ChunkManager::remove_chunk(Metachunk* chunk) { | |
998 size_t word_size = chunk->word_size(); | |
999 ChunkIndex index = list_index(word_size); | |
1000 if (index != HumongousIndex) { | |
1001 free_chunks(index)->remove_chunk(chunk); | |
1002 } else { | |
1003 humongous_dictionary()->remove_chunk(chunk); | |
1004 } | |
1005 | |
1006 // Chunk is being removed from the chunks free list. | |
1007 dec_free_chunks_total(chunk->capacity_word_size()); | |
1008 } | |
1009 | |
1010 // Walk the list of VirtualSpaceNodes and delete | |
1011 // nodes with a 0 container_count. Remove Metachunks in | |
1012 // the node from their respective freelists. | |
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1013 void VirtualSpaceList::purge(ChunkManager* chunk_manager) { |
10175 | 1014 assert_lock_strong(SpaceManager::expand_lock()); |
1015 // Don't use a VirtualSpaceListIterator because this | |
1016 // list is being changed and a straightforward use of an iterator is not safe. | |
1017 VirtualSpaceNode* purged_vsl = NULL; | |
1018 VirtualSpaceNode* prev_vsl = virtual_space_list(); | |
1019 VirtualSpaceNode* next_vsl = prev_vsl; | |
1020 while (next_vsl != NULL) { | |
1021 VirtualSpaceNode* vsl = next_vsl; | |
1022 next_vsl = vsl->next(); | |
1023 // Don't free the current virtual space since it will likely | |
1024 // be needed soon. | |
1025 if (vsl->container_count() == 0 && vsl != current_virtual_space()) { | |
1026 // Unlink it from the list | |
1027 if (prev_vsl == vsl) { | |
1028 // This is the case of the current note being the first note. | |
1029 assert(vsl == virtual_space_list(), "Expected to be the first note"); | |
1030 set_virtual_space_list(vsl->next()); | |
1031 } else { | |
1032 prev_vsl->set_next(vsl->next()); | |
1033 } | |
1034 | |
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1035 vsl->purge(chunk_manager); |
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1036 dec_reserved_words(vsl->reserved_words()); |
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1037 dec_committed_words(vsl->committed_words()); |
10175 | 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 VirtualSpaceList::VirtualSpaceList(size_t word_size ) : |
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1058 _is_class(false), |
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1059 _virtual_space_list(NULL), |
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1060 _current_virtual_space(NULL), |
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1061 _reserved_words(0), |
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1062 _committed_words(0), |
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1063 _virtual_space_count(0) { |
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1064 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1065 Mutex::_no_safepoint_check_flag); |
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1066 bool initialization_succeeded = grow_vs(word_size); |
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1067 assert(initialization_succeeded, |
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1068 " VirtualSpaceList initialization should not fail"); |
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1069 } |
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1070 |
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1071 VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) : |
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1072 _is_class(true), |
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1073 _virtual_space_list(NULL), |
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1074 _current_virtual_space(NULL), |
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1075 _reserved_words(0), |
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1076 _committed_words(0), |
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1077 _virtual_space_count(0) { |
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1078 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1079 Mutex::_no_safepoint_check_flag); |
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1080 VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs); |
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1081 bool succeeded = class_entry->initialize(); |
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1082 assert(succeeded, " VirtualSpaceList initialization should not fail"); |
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1083 link_vs(class_entry); |
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1084 } |
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1085 |
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1086 size_t VirtualSpaceList::free_bytes() { |
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1087 return virtual_space_list()->free_words_in_vs() * BytesPerWord; |
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1088 } |
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1089 |
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1090 // Allocate another meta virtual space and add it to the list. |
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1091 bool VirtualSpaceList::grow_vs(size_t vs_word_size) { |
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1092 assert_lock_strong(SpaceManager::expand_lock()); |
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1093 if (vs_word_size == 0) { |
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1094 return false; |
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1095 } |
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1096 // Reserve the space |
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1097 size_t vs_byte_size = vs_word_size * BytesPerWord; |
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1098 assert(vs_byte_size % os::vm_allocation_granularity() == 0, "Not aligned"); |
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1099 |
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1100 // Allocate the meta virtual space and initialize it. |
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1101 VirtualSpaceNode* new_entry = new VirtualSpaceNode(vs_byte_size); |
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1102 if (!new_entry->initialize()) { |
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1103 delete new_entry; |
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1104 return false; |
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1105 } else { |
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1106 assert(new_entry->reserved_words() == vs_word_size, "Must be"); |
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1107 // ensure lock-free iteration sees fully initialized node |
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1108 OrderAccess::storestore(); |
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1109 link_vs(new_entry); |
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1110 return true; |
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1111 } |
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1112 } |
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1113 |
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1114 void VirtualSpaceList::link_vs(VirtualSpaceNode* new_entry) { |
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1115 if (virtual_space_list() == NULL) { |
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1116 set_virtual_space_list(new_entry); |
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1117 } else { |
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1118 current_virtual_space()->set_next(new_entry); |
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1119 } |
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1120 set_current_virtual_space(new_entry); |
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1121 inc_reserved_words(new_entry->reserved_words()); |
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1122 inc_committed_words(new_entry->committed_words()); |
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1123 inc_virtual_space_count(); |
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1124 #ifdef ASSERT |
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1125 new_entry->mangle(); |
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1126 #endif |
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1127 if (TraceMetavirtualspaceAllocation && Verbose) { |
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1128 VirtualSpaceNode* vsl = current_virtual_space(); |
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1129 vsl->print_on(gclog_or_tty); |
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1130 } |
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1131 } |
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1132 |
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1133 bool VirtualSpaceList::expand_by(VirtualSpaceNode* node, size_t word_size, bool pre_touch) { |
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1134 size_t before = node->committed_words(); |
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1135 |
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1136 bool result = node->expand_by(word_size, pre_touch); |
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1137 |
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1138 size_t after = node->committed_words(); |
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1139 |
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1140 // after and before can be the same if the memory was pre-committed. |
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1141 assert(after >= before, "Must be"); |
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1142 inc_committed_words(after - before); |
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1143 |
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1144 return result; |
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1145 } |
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1146 |
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1147 Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size, |
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1148 size_t grow_chunks_by_words, |
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1149 size_t medium_chunk_bunch) { |
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1150 |
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1151 // Allocate a chunk out of the current virtual space. |
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1152 Metachunk* next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1153 |
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1154 if (next == NULL) { |
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1155 // Not enough room in current virtual space. Try to commit |
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1156 // more space. |
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1157 size_t expand_vs_by_words = MAX2(medium_chunk_bunch, |
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1158 grow_chunks_by_words); |
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1159 size_t page_size_words = os::vm_page_size() / BytesPerWord; |
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1160 size_t aligned_expand_vs_by_words = align_size_up(expand_vs_by_words, |
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1161 page_size_words); |
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1162 bool vs_expanded = |
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1163 expand_by(current_virtual_space(), aligned_expand_vs_by_words); |
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1164 if (!vs_expanded) { |
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1165 // Should the capacity of the metaspaces be expanded for |
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1166 // this allocation? If it's the virtual space for classes and is |
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1167 // being used for CompressedHeaders, don't allocate a new virtualspace. |
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1168 if (can_grow() && MetaspaceGC::should_expand(this, word_size)) { |
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1169 // Get another virtual space. |
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1170 size_t allocation_aligned_expand_words = |
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1171 align_size_up(aligned_expand_vs_by_words, os::vm_allocation_granularity() / BytesPerWord); |
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1172 size_t grow_vs_words = |
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1173 MAX2((size_t)VirtualSpaceSize, allocation_aligned_expand_words); |
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1174 if (grow_vs(grow_vs_words)) { |
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1175 // Got it. It's on the list now. Get a chunk from it. |
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1176 assert(current_virtual_space()->expanded_words() == 0, |
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1177 "New virtual space nodes should not have expanded"); |
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1178 |
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1179 size_t grow_chunks_by_words_aligned = align_size_up(grow_chunks_by_words, |
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1180 page_size_words); |
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1181 // We probably want to expand by aligned_expand_vs_by_words here. |
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1182 expand_by(current_virtual_space(), grow_chunks_by_words_aligned); |
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1183 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1184 } |
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1185 } else { |
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1186 // Allocation will fail and induce a GC |
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1187 if (TraceMetadataChunkAllocation && Verbose) { |
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1188 gclog_or_tty->print_cr("VirtualSpaceList::get_new_chunk():" |
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1189 " Fail instead of expand the metaspace"); |
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1190 } |
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1191 } |
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1192 } else { |
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1193 // The virtual space expanded, get a new chunk |
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1194 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1195 assert(next != NULL, "Just expanded, should succeed"); |
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1196 } |
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1197 } |
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1198 |
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1199 assert(next == NULL || (next->next() == NULL && next->prev() == NULL), |
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1200 "New chunk is still on some list"); |
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1201 return next; |
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1202 } |
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1203 |
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1204 Metachunk* VirtualSpaceList::get_initialization_chunk(size_t chunk_word_size, |
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1205 size_t chunk_bunch) { |
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1206 // Get a chunk from the chunk freelist |
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1207 Metachunk* new_chunk = get_new_chunk(chunk_word_size, |
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1208 chunk_word_size, |
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1209 chunk_bunch); |
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1210 return new_chunk; |
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1211 } |
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1212 |
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1213 void VirtualSpaceList::print_on(outputStream* st) const { |
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1214 if (TraceMetadataChunkAllocation && Verbose) { |
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1215 VirtualSpaceListIterator iter(virtual_space_list()); |
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1216 while (iter.repeat()) { |
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1217 VirtualSpaceNode* node = iter.get_next(); |
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1218 node->print_on(st); |
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1219 } |
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1220 } |
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1221 } |
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1222 |
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1223 bool VirtualSpaceList::contains(const void *ptr) { |
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1224 VirtualSpaceNode* list = virtual_space_list(); |
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1225 VirtualSpaceListIterator iter(list); |
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1226 while (iter.repeat()) { |
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1227 VirtualSpaceNode* node = iter.get_next(); |
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1228 if (node->reserved()->contains(ptr)) { |
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1229 return true; |
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1230 } |
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1231 } |
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1232 return false; |
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1233 } |
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1234 |
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1235 |
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1236 // MetaspaceGC methods |
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1237 |
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1238 // VM_CollectForMetadataAllocation is the vm operation used to GC. |
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1239 // Within the VM operation after the GC the attempt to allocate the metadata |
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1240 // should succeed. If the GC did not free enough space for the metaspace |
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1241 // allocation, the HWM is increased so that another virtualspace will be |
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1242 // allocated for the metadata. With perm gen the increase in the perm |
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1243 // gen had bounds, MinMetaspaceExpansion and MaxMetaspaceExpansion. The |
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1244 // metaspace policy uses those as the small and large steps for the HWM. |
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1245 // |
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1246 // After the GC the compute_new_size() for MetaspaceGC is called to |
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1247 // resize the capacity of the metaspaces. The current implementation |
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1248 // is based on the flags MinMetaspaceFreeRatio and MaxMetaspaceFreeRatio used |
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1249 // to resize the Java heap by some GC's. New flags can be implemented |
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1250 // if really needed. MinMetaspaceFreeRatio is used to calculate how much |
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1251 // free space is desirable in the metaspace capacity to decide how much |
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1252 // to increase the HWM. MaxMetaspaceFreeRatio is used to decide how much |
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1253 // free space is desirable in the metaspace capacity before decreasing |
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1254 // the HWM. |
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1255 |
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1256 // Calculate the amount to increase the high water mark (HWM). |
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1257 // Increase by a minimum amount (MinMetaspaceExpansion) so that |
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1258 // another expansion is not requested too soon. If that is not |
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1259 // enough to satisfy the allocation (i.e. big enough for a word_size |
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1260 // allocation), increase by MaxMetaspaceExpansion. If that is still |
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1261 // not enough, expand by the size of the allocation (word_size) plus |
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1262 // some. |
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1263 size_t MetaspaceGC::delta_capacity_until_GC(size_t word_size) { |
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1264 size_t before_inc = MetaspaceGC::capacity_until_GC(); |
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1265 size_t min_delta_words = MinMetaspaceExpansion / BytesPerWord; |
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1266 size_t max_delta_words = MaxMetaspaceExpansion / BytesPerWord; |
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1267 size_t page_size_words = os::vm_page_size() / BytesPerWord; |
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1268 size_t size_delta_words = align_size_up(word_size, page_size_words); |
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1269 size_t delta_words = MAX2(size_delta_words, min_delta_words); |
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1270 if (delta_words > min_delta_words) { |
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1271 // Don't want to hit the high water mark on the next |
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1272 // allocation so make the delta greater than just enough |
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1273 // for this allocation. |
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1274 delta_words = MAX2(delta_words, max_delta_words); |
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1275 if (delta_words > max_delta_words) { |
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1276 // This allocation is large but the next ones are probably not |
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1277 // so increase by the minimum. |
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1278 delta_words = delta_words + min_delta_words; |
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1279 } |
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|
1280 } |
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1281 return delta_words; |
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|
1282 } |
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|
1283 |
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1284 bool MetaspaceGC::should_expand(VirtualSpaceList* vsl, size_t word_size) { |
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1285 |
8790
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1286 // If the user wants a limit, impose one. |
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1287 // The reason for someone using this flag is to limit reserved space. So |
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1288 // for non-class virtual space, compare against virtual spaces that are reserved. |
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1289 // For class virtual space, we only compare against the committed space, not |
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1290 // reserved space, because this is a larger space prereserved for compressed |
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1291 // class pointers. |
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1292 if (!FLAG_IS_DEFAULT(MaxMetaspaceSize)) { |
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|
1293 size_t nonclass_allocated = MetaspaceAux::reserved_bytes(Metaspace::NonClassType); |
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1294 size_t class_allocated = MetaspaceAux::allocated_capacity_bytes(Metaspace::ClassType); |
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1295 size_t real_allocated = nonclass_allocated + class_allocated; |
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1296 if (real_allocated >= MaxMetaspaceSize) { |
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1297 return false; |
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1298 } |
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1299 } |
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1300 |
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1301 // Class virtual space should always be expanded. Call GC for the other |
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1302 // metadata virtual space. |
12056
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1303 if (Metaspace::using_class_space() && |
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1304 (vsl == Metaspace::class_space_list())) return true; |
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1305 |
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1306 // If this is part of an allocation after a GC, expand |
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1307 // unconditionally. |
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1308 if (MetaspaceGC::expand_after_GC()) { |
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1309 return true; |
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1310 } |
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1311 |
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1312 |
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1313 // If the capacity is below the minimum capacity, allow the |
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1314 // expansion. Also set the high-water-mark (capacity_until_GC) |
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1315 // to that minimum capacity so that a GC will not be induced |
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1316 // until that minimum capacity is exceeded. |
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1317 size_t committed_capacity_bytes = MetaspaceAux::allocated_capacity_bytes(); |
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1318 size_t metaspace_size_bytes = MetaspaceSize; |
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1319 if (committed_capacity_bytes < metaspace_size_bytes || |
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1320 capacity_until_GC() == 0) { |
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1321 set_capacity_until_GC(metaspace_size_bytes); |
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1322 return true; |
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1323 } else { |
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1324 if (committed_capacity_bytes < capacity_until_GC()) { |
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1325 return true; |
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1326 } else { |
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1327 if (TraceMetadataChunkAllocation && Verbose) { |
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1328 gclog_or_tty->print_cr(" allocation request size " SIZE_FORMAT |
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1329 " capacity_until_GC " SIZE_FORMAT |
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1330 " allocated_capacity_bytes " SIZE_FORMAT, |
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1331 word_size, |
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1332 capacity_until_GC(), |
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1333 MetaspaceAux::allocated_capacity_bytes()); |
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1334 } |
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1335 return false; |
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1336 } |
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1337 } |
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1338 } |
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1339 |
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1340 |
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1341 |
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1342 void MetaspaceGC::compute_new_size() { |
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1343 assert(_shrink_factor <= 100, "invalid shrink factor"); |
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1344 uint current_shrink_factor = _shrink_factor; |
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1345 _shrink_factor = 0; |
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1346 |
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1347 // Until a faster way of calculating the "used" quantity is implemented, |
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1348 // use "capacity". |
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1349 const size_t used_after_gc = MetaspaceAux::allocated_capacity_bytes(); |
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1350 const size_t capacity_until_GC = MetaspaceGC::capacity_until_GC(); |
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1351 |
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1352 const double minimum_free_percentage = MinMetaspaceFreeRatio / 100.0; |
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1353 const double maximum_used_percentage = 1.0 - minimum_free_percentage; |
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1354 |
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1355 const double min_tmp = used_after_gc / maximum_used_percentage; |
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1356 size_t minimum_desired_capacity = |
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1357 (size_t)MIN2(min_tmp, double(max_uintx)); |
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1358 // Don't shrink less than the initial generation size |
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1359 minimum_desired_capacity = MAX2(minimum_desired_capacity, |
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1360 MetaspaceSize); |
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1361 |
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1362 if (PrintGCDetails && Verbose) { |
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1363 gclog_or_tty->print_cr("\nMetaspaceGC::compute_new_size: "); |
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1364 gclog_or_tty->print_cr(" " |
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1365 " minimum_free_percentage: %6.2f" |
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1366 " maximum_used_percentage: %6.2f", |
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1367 minimum_free_percentage, |
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1368 maximum_used_percentage); |
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1369 gclog_or_tty->print_cr(" " |
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1370 " used_after_gc : %6.1fKB", |
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1371 used_after_gc / (double) K); |
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1372 } |
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1373 |
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1374 |
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1375 size_t shrink_bytes = 0; |
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1376 if (capacity_until_GC < minimum_desired_capacity) { |
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1377 // If we have less capacity below the metaspace HWM, then |
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1378 // increment the HWM. |
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1379 size_t expand_bytes = minimum_desired_capacity - capacity_until_GC; |
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1380 // Don't expand unless it's significant |
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1381 if (expand_bytes >= MinMetaspaceExpansion) { |
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1382 MetaspaceGC::set_capacity_until_GC(capacity_until_GC + expand_bytes); |
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1383 } |
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1384 if (PrintGCDetails && Verbose) { |
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1385 size_t new_capacity_until_GC = capacity_until_GC; |
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1386 gclog_or_tty->print_cr(" expanding:" |
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1387 " minimum_desired_capacity: %6.1fKB" |
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1388 " expand_bytes: %6.1fKB" |
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1389 " MinMetaspaceExpansion: %6.1fKB" |
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1390 " new metaspace HWM: %6.1fKB", |
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1391 minimum_desired_capacity / (double) K, |
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1392 expand_bytes / (double) K, |
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1393 MinMetaspaceExpansion / (double) K, |
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1394 new_capacity_until_GC / (double) K); |
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1395 } |
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1396 return; |
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1397 } |
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1398 |
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1399 // No expansion, now see if we want to shrink |
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1400 // We would never want to shrink more than this |
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1401 size_t max_shrink_bytes = capacity_until_GC - minimum_desired_capacity; |
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1402 assert(max_shrink_bytes >= 0, err_msg("max_shrink_bytes " SIZE_FORMAT, |
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1403 max_shrink_bytes)); |
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1404 |
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1405 // Should shrinking be considered? |
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1406 if (MaxMetaspaceFreeRatio < 100) { |
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1407 const double maximum_free_percentage = MaxMetaspaceFreeRatio / 100.0; |
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1408 const double minimum_used_percentage = 1.0 - maximum_free_percentage; |
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1409 const double max_tmp = used_after_gc / minimum_used_percentage; |
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1410 size_t maximum_desired_capacity = (size_t)MIN2(max_tmp, double(max_uintx)); |
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1411 maximum_desired_capacity = MAX2(maximum_desired_capacity, |
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1412 MetaspaceSize); |
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1413 if (PrintGCDetails && Verbose) { |
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1414 gclog_or_tty->print_cr(" " |
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1415 " maximum_free_percentage: %6.2f" |
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1416 " minimum_used_percentage: %6.2f", |
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1417 maximum_free_percentage, |
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1418 minimum_used_percentage); |
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1419 gclog_or_tty->print_cr(" " |
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1420 " minimum_desired_capacity: %6.1fKB" |
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1421 " maximum_desired_capacity: %6.1fKB", |
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1422 minimum_desired_capacity / (double) K, |
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1423 maximum_desired_capacity / (double) K); |
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1424 } |
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1425 |
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1426 assert(minimum_desired_capacity <= maximum_desired_capacity, |
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1427 "sanity check"); |
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1428 |
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1429 if (capacity_until_GC > maximum_desired_capacity) { |
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1430 // Capacity too large, compute shrinking size |
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1431 shrink_bytes = capacity_until_GC - maximum_desired_capacity; |
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1432 // We don't want shrink all the way back to initSize if people call |
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1433 // System.gc(), because some programs do that between "phases" and then |
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1434 // we'd just have to grow the heap up again for the next phase. So we |
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1435 // damp the shrinking: 0% on the first call, 10% on the second call, 40% |
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1436 // on the third call, and 100% by the fourth call. But if we recompute |
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1437 // size without shrinking, it goes back to 0%. |
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1438 shrink_bytes = shrink_bytes / 100 * current_shrink_factor; |
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1439 assert(shrink_bytes <= max_shrink_bytes, |
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1440 err_msg("invalid shrink size " SIZE_FORMAT " not <= " SIZE_FORMAT, |
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1441 shrink_bytes, max_shrink_bytes)); |
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1442 if (current_shrink_factor == 0) { |
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|
1443 _shrink_factor = 10; |
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parents:
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|
1444 } else { |
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|
1445 _shrink_factor = MIN2(current_shrink_factor * 4, (uint) 100); |
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parents:
diff
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|
1446 } |
da91efe96a93
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coleenp
parents:
diff
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|
1447 if (PrintGCDetails && Verbose) { |
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parents:
diff
changeset
|
1448 gclog_or_tty->print_cr(" " |
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parents:
diff
changeset
|
1449 " shrinking:" |
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coleenp
parents:
diff
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|
1450 " initSize: %.1fK" |
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parents:
diff
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|
1451 " maximum_desired_capacity: %.1fK", |
da91efe96a93
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coleenp
parents:
diff
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|
1452 MetaspaceSize / (double) K, |
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parents:
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|
1453 maximum_desired_capacity / (double) K); |
da91efe96a93
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parents:
diff
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|
1454 gclog_or_tty->print_cr(" " |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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10175
diff
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|
1455 " shrink_bytes: %.1fK" |
6725
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|
1456 " current_shrink_factor: %d" |
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diff
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|
1457 " new shrink factor: %d" |
da91efe96a93
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|
1458 " MinMetaspaceExpansion: %.1fK", |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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parents:
10175
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|
1459 shrink_bytes / (double) K, |
6725
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|
1460 current_shrink_factor, |
da91efe96a93
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|
1461 _shrink_factor, |
da91efe96a93
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coleenp
parents:
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|
1462 MinMetaspaceExpansion / (double) K); |
da91efe96a93
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parents:
diff
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|
1463 } |
da91efe96a93
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parents:
diff
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|
1464 } |
da91efe96a93
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parents:
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|
1465 } |
da91efe96a93
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|
1466 |
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1467 // Don't shrink unless it's significant |
10183
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1468 if (shrink_bytes >= MinMetaspaceExpansion && |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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1469 ((capacity_until_GC - shrink_bytes) >= MetaspaceSize)) { |
868d87ed63c8
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|
1470 MetaspaceGC::set_capacity_until_GC(capacity_until_GC - shrink_bytes); |
6725
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|
1471 } |
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|
1472 } |
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|
1473 |
da91efe96a93
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|
1474 // Metadebug methods |
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|
1475 |
da91efe96a93
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1476 void Metadebug::deallocate_chunk_a_lot(SpaceManager* sm, |
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|
1477 size_t chunk_word_size){ |
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|
1478 #ifdef ASSERT |
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1479 VirtualSpaceList* vsl = sm->vs_list(); |
da91efe96a93
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|
1480 if (MetaDataDeallocateALot && |
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|
1481 Metadebug::deallocate_chunk_a_lot_count() % MetaDataDeallocateALotInterval == 0 ) { |
da91efe96a93
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|
1482 Metadebug::reset_deallocate_chunk_a_lot_count(); |
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1483 for (uint i = 0; i < metadata_deallocate_a_lock_chunk; i++) { |
da91efe96a93
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1484 Metachunk* dummy_chunk = vsl->current_virtual_space()->take_from_committed(chunk_word_size); |
da91efe96a93
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|
1485 if (dummy_chunk == NULL) { |
da91efe96a93
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parents:
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|
1486 break; |
da91efe96a93
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parents:
diff
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|
1487 } |
12303
b960c9df4f11
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parents:
12302
diff
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|
1488 sm->chunk_manager()->chunk_freelist_deallocate(dummy_chunk); |
6725
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|
1489 |
da91efe96a93
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|
1490 if (TraceMetadataChunkAllocation && Verbose) { |
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|
1491 gclog_or_tty->print("Metadebug::deallocate_chunk_a_lot: %d) ", |
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|
1492 sm->sum_count_in_chunks_in_use()); |
da91efe96a93
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|
1493 dummy_chunk->print_on(gclog_or_tty); |
da91efe96a93
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|
1494 gclog_or_tty->print_cr(" Free chunks total %d count %d", |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
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|
1495 sm->chunk_manager()->free_chunks_total_words(), |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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12302
diff
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|
1496 sm->chunk_manager()->free_chunks_count()); |
6725
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|
1497 } |
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|
1498 } |
da91efe96a93
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|
1499 } else { |
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|
1500 Metadebug::inc_deallocate_chunk_a_lot_count(); |
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|
1501 } |
da91efe96a93
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diff
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|
1502 #endif |
da91efe96a93
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diff
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|
1503 } |
da91efe96a93
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diff
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|
1504 |
da91efe96a93
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diff
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|
1505 void Metadebug::deallocate_block_a_lot(SpaceManager* sm, |
da91efe96a93
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coleenp
parents:
diff
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|
1506 size_t raw_word_size){ |
da91efe96a93
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parents:
diff
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|
1507 #ifdef ASSERT |
da91efe96a93
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coleenp
parents:
diff
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|
1508 if (MetaDataDeallocateALot && |
da91efe96a93
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|
1509 Metadebug::deallocate_block_a_lot_count() % MetaDataDeallocateALotInterval == 0 ) { |
da91efe96a93
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parents:
diff
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|
1510 Metadebug::set_deallocate_block_a_lot_count(0); |
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diff
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|
1511 for (uint i = 0; i < metadata_deallocate_a_lot_block; i++) { |
6885 | 1512 MetaWord* dummy_block = sm->allocate_work(raw_word_size); |
6725
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|
1513 if (dummy_block == 0) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
1514 break; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
1515 } |
6885 | 1516 sm->deallocate(dummy_block, raw_word_size); |
6725
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parents:
diff
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|
1517 } |
da91efe96a93
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parents:
diff
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|
1518 } else { |
da91efe96a93
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diff
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|
1519 Metadebug::inc_deallocate_block_a_lot_count(); |
da91efe96a93
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coleenp
parents:
diff
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|
1520 } |
da91efe96a93
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coleenp
parents:
diff
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|
1521 #endif |
da91efe96a93
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parents:
diff
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|
1522 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
1523 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1524 void Metadebug::init_allocation_fail_alot_count() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
1525 if (MetadataAllocationFailALot) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
1526 _allocation_fail_alot_count = |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
1527 1+(long)((double)MetadataAllocationFailALotInterval*os::random()/(max_jint+1.0)); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1528 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1529 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1530 |
da91efe96a93
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parents:
diff
changeset
|
1531 #ifdef ASSERT |
da91efe96a93
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parents:
diff
changeset
|
1532 bool Metadebug::test_metadata_failure() { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1533 if (MetadataAllocationFailALot && |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1534 Threads::is_vm_complete()) { |
da91efe96a93
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coleenp
parents:
diff
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|
1535 if (_allocation_fail_alot_count > 0) { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1536 _allocation_fail_alot_count--; |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1537 } else { |
da91efe96a93
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coleenp
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diff
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|
1538 if (TraceMetadataChunkAllocation && Verbose) { |
da91efe96a93
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coleenp
parents:
diff
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|
1539 gclog_or_tty->print_cr("Metadata allocation failing for " |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1540 "MetadataAllocationFailALot"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1541 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1542 init_allocation_fail_alot_count(); |
da91efe96a93
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coleenp
parents:
diff
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|
1543 return true; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1544 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1545 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1546 return false; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1547 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1548 #endif |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1549 |
da91efe96a93
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changeset
|
1550 // ChunkManager methods |
da91efe96a93
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diff
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|
1551 |
12235 | 1552 size_t ChunkManager::free_chunks_total_words() { |
6725
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diff
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|
1553 return _free_chunks_total; |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1554 } |
da91efe96a93
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parents:
diff
changeset
|
1555 |
12235 | 1556 size_t ChunkManager::free_chunks_total_bytes() { |
1557 return free_chunks_total_words() * BytesPerWord; | |
6725
da91efe96a93
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diff
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|
1558 } |
da91efe96a93
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coleenp
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diff
changeset
|
1559 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
1560 size_t ChunkManager::free_chunks_count() { |
da91efe96a93
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diff
changeset
|
1561 #ifdef ASSERT |
da91efe96a93
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diff
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|
1562 if (!UseConcMarkSweepGC && !SpaceManager::expand_lock()->is_locked()) { |
da91efe96a93
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coleenp
parents:
diff
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|
1563 MutexLockerEx cl(SpaceManager::expand_lock(), |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1564 Mutex::_no_safepoint_check_flag); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1565 // This lock is only needed in debug because the verification |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1566 // 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
|
1567 slow_locked_verify_free_chunks_count(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
1568 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
1569 #endif |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
1570 return _free_chunks_count; |
6725
da91efe96a93
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parents:
diff
changeset
|
1571 } |
da91efe96a93
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parents:
diff
changeset
|
1572 |
da91efe96a93
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changeset
|
1573 void ChunkManager::locked_verify_free_chunks_total() { |
da91efe96a93
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parents:
diff
changeset
|
1574 assert_lock_strong(SpaceManager::expand_lock()); |
da91efe96a93
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parents:
diff
changeset
|
1575 assert(sum_free_chunks() == _free_chunks_total, |
da91efe96a93
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parents:
diff
changeset
|
1576 err_msg("_free_chunks_total " SIZE_FORMAT " is not the" |
da91efe96a93
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coleenp
parents:
diff
changeset
|
1577 " same as sum " SIZE_FORMAT, _free_chunks_total, |
da91efe96a93
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parents:
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1578 sum_free_chunks())); |
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1579 } |
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1580 |
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1581 void ChunkManager::verify_free_chunks_total() { |
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1582 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1583 Mutex::_no_safepoint_check_flag); |
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1584 locked_verify_free_chunks_total(); |
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1585 } |
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1586 |
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1587 void ChunkManager::locked_verify_free_chunks_count() { |
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1588 assert_lock_strong(SpaceManager::expand_lock()); |
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1589 assert(sum_free_chunks_count() == _free_chunks_count, |
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1590 err_msg("_free_chunks_count " SIZE_FORMAT " is not the" |
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1591 " same as sum " SIZE_FORMAT, _free_chunks_count, |
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1592 sum_free_chunks_count())); |
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1593 } |
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1594 |
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1595 void ChunkManager::verify_free_chunks_count() { |
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1596 #ifdef ASSERT |
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1597 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1598 Mutex::_no_safepoint_check_flag); |
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1599 locked_verify_free_chunks_count(); |
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1600 #endif |
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1601 } |
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1602 |
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1603 void ChunkManager::verify() { |
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1604 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1605 Mutex::_no_safepoint_check_flag); |
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1606 locked_verify(); |
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1607 } |
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1608 |
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1609 void ChunkManager::locked_verify() { |
6885 | 1610 locked_verify_free_chunks_count(); |
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1611 locked_verify_free_chunks_total(); |
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1612 } |
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1613 |
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1614 void ChunkManager::locked_print_free_chunks(outputStream* st) { |
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1615 assert_lock_strong(SpaceManager::expand_lock()); |
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1616 st->print_cr("Free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1617 _free_chunks_total, _free_chunks_count); |
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1618 } |
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1619 |
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1620 void ChunkManager::locked_print_sum_free_chunks(outputStream* st) { |
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1621 assert_lock_strong(SpaceManager::expand_lock()); |
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1622 st->print_cr("Sum free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1623 sum_free_chunks(), sum_free_chunks_count()); |
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1624 } |
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1625 ChunkList* ChunkManager::free_chunks(ChunkIndex index) { |
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1626 return &_free_chunks[index]; |
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1627 } |
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1628 |
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1629 // These methods that sum the free chunk lists are used in printing |
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1630 // methods that are used in product builds. |
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1631 size_t ChunkManager::sum_free_chunks() { |
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1632 assert_lock_strong(SpaceManager::expand_lock()); |
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1633 size_t result = 0; |
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1634 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
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1635 ChunkList* list = free_chunks(i); |
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1636 |
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1637 if (list == NULL) { |
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1638 continue; |
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1639 } |
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1640 |
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1641 result = result + list->count() * list->size(); |
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1642 } |
6885 | 1643 result = result + humongous_dictionary()->total_size(); |
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1644 return result; |
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1645 } |
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1646 |
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1647 size_t ChunkManager::sum_free_chunks_count() { |
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1648 assert_lock_strong(SpaceManager::expand_lock()); |
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1649 size_t count = 0; |
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1650 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
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1651 ChunkList* list = free_chunks(i); |
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1652 if (list == NULL) { |
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1653 continue; |
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1654 } |
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1655 count = count + list->count(); |
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1656 } |
6885 | 1657 count = count + humongous_dictionary()->total_free_blocks(); |
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1658 return count; |
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1659 } |
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1660 |
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1661 ChunkList* ChunkManager::find_free_chunks_list(size_t word_size) { |
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1662 ChunkIndex index = list_index(word_size); |
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1663 assert(index < HumongousIndex, "No humongous list"); |
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1664 return free_chunks(index); |
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1665 } |
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1666 |
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1667 void ChunkManager::free_chunks_put(Metachunk* chunk) { |
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1668 assert_lock_strong(SpaceManager::expand_lock()); |
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1669 ChunkList* free_list = find_free_chunks_list(chunk->word_size()); |
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1670 chunk->set_next(free_list->head()); |
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1671 free_list->set_head(chunk); |
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1672 // chunk is being returned to the chunk free list |
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1673 inc_free_chunks_total(chunk->capacity_word_size()); |
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1674 slow_locked_verify(); |
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1675 } |
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1676 |
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1677 void ChunkManager::chunk_freelist_deallocate(Metachunk* chunk) { |
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1678 // The deallocation of a chunk originates in the freelist |
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1679 // manangement code for a Metaspace and does not hold the |
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1680 // lock. |
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1681 assert(chunk != NULL, "Deallocating NULL"); |
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1682 assert_lock_strong(SpaceManager::expand_lock()); |
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1683 slow_locked_verify(); |
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1684 if (TraceMetadataChunkAllocation) { |
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1685 gclog_or_tty->print_cr("ChunkManager::chunk_freelist_deallocate: chunk " |
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1686 PTR_FORMAT " size " SIZE_FORMAT, |
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1687 chunk, chunk->word_size()); |
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1688 } |
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1689 free_chunks_put(chunk); |
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1690 } |
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1691 |
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1692 Metachunk* ChunkManager::free_chunks_get(size_t word_size) { |
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1693 assert_lock_strong(SpaceManager::expand_lock()); |
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1694 |
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1695 slow_locked_verify(); |
6885 | 1696 |
1697 Metachunk* chunk = NULL; | |
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1698 if (list_index(word_size) != HumongousIndex) { |
6885 | 1699 ChunkList* free_list = find_free_chunks_list(word_size); |
1700 assert(free_list != NULL, "Sanity check"); | |
1701 | |
1702 chunk = free_list->head(); | |
1703 debug_only(Metachunk* debug_head = chunk;) | |
1704 | |
1705 if (chunk == NULL) { | |
1706 return NULL; | |
1707 } | |
1708 | |
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1709 // Remove the chunk as the head of the list. |
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1710 free_list->remove_chunk(chunk); |
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1711 |
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1712 // Chunk is being removed from the chunks free list. |
6885 | 1713 dec_free_chunks_total(chunk->capacity_word_size()); |
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1714 |
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1715 if (TraceMetadataChunkAllocation && Verbose) { |
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1716 gclog_or_tty->print_cr("ChunkManager::free_chunks_get: free_list " |
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1717 PTR_FORMAT " head " PTR_FORMAT " size " SIZE_FORMAT, |
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1718 free_list, chunk, chunk->word_size()); |
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1719 } |
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1720 } else { |
6885 | 1721 chunk = humongous_dictionary()->get_chunk( |
1722 word_size, | |
1723 FreeBlockDictionary<Metachunk>::atLeast); | |
1724 | |
1725 if (chunk != NULL) { | |
1726 if (TraceMetadataHumongousAllocation) { | |
1727 size_t waste = chunk->word_size() - word_size; | |
12240
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1728 gclog_or_tty->print_cr("Free list allocate humongous chunk size " |
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1729 SIZE_FORMAT " for requested size " SIZE_FORMAT |
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1730 " waste " SIZE_FORMAT, |
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1731 chunk->word_size(), word_size, waste); |
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1732 } |
6885 | 1733 // Chunk is being removed from the chunks free list. |
1734 dec_free_chunks_total(chunk->capacity_word_size()); | |
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1735 } else { |
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1736 return NULL; |
6885 | 1737 } |
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1738 } |
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1739 |
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1740 // Remove it from the links to this freelist |
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1741 chunk->set_next(NULL); |
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1742 chunk->set_prev(NULL); |
10175 | 1743 #ifdef ASSERT |
1744 // Chunk is no longer on any freelist. Setting to false make container_count_slow() | |
1745 // work. | |
1746 chunk->set_is_free(false); | |
1747 #endif | |
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1748 chunk->container()->inc_container_count(); |
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1749 |
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1750 slow_locked_verify(); |
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1751 return chunk; |
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1752 } |
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1753 |
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1754 Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) { |
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1755 assert_lock_strong(SpaceManager::expand_lock()); |
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1756 slow_locked_verify(); |
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1757 |
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1758 // Take from the beginning of the list |
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1759 Metachunk* chunk = free_chunks_get(word_size); |
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1760 if (chunk == NULL) { |
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1761 return NULL; |
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1762 } |
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1763 |
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1764 assert((word_size <= chunk->word_size()) || |
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1765 list_index(chunk->word_size() == HumongousIndex), |
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1766 "Non-humongous variable sized chunk"); |
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1767 if (TraceMetadataChunkAllocation) { |
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1768 size_t list_count; |
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1769 if (list_index(word_size) < HumongousIndex) { |
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1770 ChunkList* list = find_free_chunks_list(word_size); |
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1771 list_count = list->count(); |
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1772 } else { |
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1773 list_count = humongous_dictionary()->total_count(); |
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1774 } |
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1775 gclog_or_tty->print("ChunkManager::chunk_freelist_allocate: " PTR_FORMAT " chunk " |
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1776 PTR_FORMAT " size " SIZE_FORMAT " count " SIZE_FORMAT " ", |
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1777 this, chunk, chunk->word_size(), list_count); |
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1778 locked_print_free_chunks(gclog_or_tty); |
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1779 } |
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1780 |
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1781 return chunk; |
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1782 } |
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1783 |
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1784 void ChunkManager::print_on(outputStream* out) const { |
6885 | 1785 if (PrintFLSStatistics != 0) { |
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1786 const_cast<ChunkManager *>(this)->humongous_dictionary()->report_statistics(); |
6885 | 1787 } |
1788 } | |
1789 | |
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1790 // SpaceManager methods |
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1791 |
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1792 void SpaceManager::get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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1793 size_t* chunk_word_size, |
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1794 size_t* class_chunk_word_size) { |
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1795 switch (type) { |
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1796 case Metaspace::BootMetaspaceType: |
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1797 *chunk_word_size = Metaspace::first_chunk_word_size(); |
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1798 *class_chunk_word_size = Metaspace::first_class_chunk_word_size(); |
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1799 break; |
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1800 case Metaspace::ROMetaspaceType: |
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1801 *chunk_word_size = SharedReadOnlySize / wordSize; |
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1802 *class_chunk_word_size = ClassSpecializedChunk; |
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1803 break; |
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1804 case Metaspace::ReadWriteMetaspaceType: |
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1805 *chunk_word_size = SharedReadWriteSize / wordSize; |
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1806 *class_chunk_word_size = ClassSpecializedChunk; |
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1807 break; |
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1808 case Metaspace::AnonymousMetaspaceType: |
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1809 case Metaspace::ReflectionMetaspaceType: |
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1810 *chunk_word_size = SpecializedChunk; |
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1811 *class_chunk_word_size = ClassSpecializedChunk; |
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1812 break; |
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1813 default: |
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1814 *chunk_word_size = SmallChunk; |
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1815 *class_chunk_word_size = ClassSmallChunk; |
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1816 break; |
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1817 } |
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1818 assert(*chunk_word_size != 0 && *class_chunk_word_size != 0, |
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1819 err_msg("Initial chunks sizes bad: data " SIZE_FORMAT |
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1820 " class " SIZE_FORMAT, |
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1821 *chunk_word_size, *class_chunk_word_size)); |
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1822 } |
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1823 |
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1824 size_t SpaceManager::sum_free_in_chunks_in_use() const { |
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1825 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1826 size_t free = 0; |
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1827 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1828 Metachunk* chunk = chunks_in_use(i); |
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1829 while (chunk != NULL) { |
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1830 free += chunk->free_word_size(); |
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1831 chunk = chunk->next(); |
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1832 } |
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1833 } |
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1834 return free; |
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1835 } |
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1836 |
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1837 size_t SpaceManager::sum_waste_in_chunks_in_use() const { |
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1838 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1839 size_t result = 0; |
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1840 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1841 result += sum_waste_in_chunks_in_use(i); |
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1842 } |
6885 | 1843 |
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1844 return result; |
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1845 } |
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1846 |
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1847 size_t SpaceManager::sum_waste_in_chunks_in_use(ChunkIndex index) const { |
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1848 size_t result = 0; |
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1849 Metachunk* chunk = chunks_in_use(index); |
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1850 // Count the free space in all the chunk but not the |
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1851 // current chunk from which allocations are still being done. |
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1852 while (chunk != NULL) { |
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1853 if (chunk != current_chunk()) { |
6885 | 1854 result += chunk->free_word_size(); |
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1855 } |
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1856 chunk = chunk->next(); |
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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_capacity_in_chunks_in_use() const { |
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1862 // For CMS use "allocated_chunks_words()" which does not need the |
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1863 // Metaspace lock. For the other collectors sum over the |
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1864 // lists. Use both methods as a check that "allocated_chunks_words()" |
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1865 // is correct. That is, sum_capacity_in_chunks() is too expensive |
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1866 // to use in the product and allocated_chunks_words() should be used |
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1867 // but allow for checking that allocated_chunks_words() returns the same |
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1868 // value as sum_capacity_in_chunks_in_use() which is the definitive |
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1869 // answer. |
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1870 if (UseConcMarkSweepGC) { |
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1871 return allocated_chunks_words(); |
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1872 } else { |
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1873 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1874 size_t sum = 0; |
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1875 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1876 Metachunk* chunk = chunks_in_use(i); |
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1877 while (chunk != NULL) { |
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1878 sum += chunk->capacity_word_size(); |
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1879 chunk = chunk->next(); |
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1880 } |
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1881 } |
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1882 return sum; |
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1883 } |
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1884 } |
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1885 |
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1886 size_t SpaceManager::sum_count_in_chunks_in_use() { |
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1887 size_t count = 0; |
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1888 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1889 count = count + sum_count_in_chunks_in_use(i); |
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1890 } |
6885 | 1891 |
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1892 return count; |
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1893 } |
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1894 |
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1895 size_t SpaceManager::sum_count_in_chunks_in_use(ChunkIndex i) { |
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1896 size_t count = 0; |
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1897 Metachunk* chunk = chunks_in_use(i); |
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1898 while (chunk != NULL) { |
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1899 count++; |
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1900 chunk = chunk->next(); |
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1901 } |
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1902 return count; |
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1903 } |
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1904 |
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1905 |
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1906 size_t SpaceManager::sum_used_in_chunks_in_use() const { |
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1907 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1908 size_t used = 0; |
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1909 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1910 Metachunk* chunk = chunks_in_use(i); |
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1911 while (chunk != NULL) { |
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1912 used += chunk->used_word_size(); |
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1913 chunk = chunk->next(); |
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1914 } |
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1915 } |
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1916 return used; |
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1917 } |
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1918 |
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1919 void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const { |
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1920 |
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1921 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1922 Metachunk* chunk = chunks_in_use(i); |
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1923 st->print("SpaceManager: %s " PTR_FORMAT, |
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1924 chunk_size_name(i), chunk); |
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1925 if (chunk != NULL) { |
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1926 st->print_cr(" free " SIZE_FORMAT, |
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1927 chunk->free_word_size()); |
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1928 } else { |
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1929 st->print_cr(""); |
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1930 } |
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1931 } |
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1932 |
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1933 chunk_manager()->locked_print_free_chunks(st); |
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1934 chunk_manager()->locked_print_sum_free_chunks(st); |
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1935 } |
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1936 |
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1937 size_t SpaceManager::calc_chunk_size(size_t word_size) { |
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1938 |
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1939 // Decide between a small chunk and a medium chunk. Up to |
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1940 // _small_chunk_limit small chunks can be allocated but |
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1941 // once a medium chunk has been allocated, no more small |
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1942 // chunks will be allocated. |
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1943 size_t chunk_word_size; |
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1944 if (chunks_in_use(MediumIndex) == NULL && |
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1945 sum_count_in_chunks_in_use(SmallIndex) < _small_chunk_limit) { |
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1946 chunk_word_size = (size_t) small_chunk_size(); |
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1947 if (word_size + Metachunk::overhead() > small_chunk_size()) { |
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1948 chunk_word_size = medium_chunk_size(); |
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1949 } |
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1950 } else { |
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1951 chunk_word_size = medium_chunk_size(); |
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1952 } |
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1953 |
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1954 // Might still need a humongous chunk. Enforce an |
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1955 // eight word granularity to facilitate reuse (some |
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1956 // wastage but better chance of reuse). |
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1957 size_t if_humongous_sized_chunk = |
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1958 align_size_up(word_size + Metachunk::overhead(), |
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1959 HumongousChunkGranularity); |
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1960 chunk_word_size = |
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1961 MAX2((size_t) chunk_word_size, if_humongous_sized_chunk); |
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1962 |
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1963 assert(!SpaceManager::is_humongous(word_size) || |
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1964 chunk_word_size == if_humongous_sized_chunk, |
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1965 err_msg("Size calculation is wrong, word_size " SIZE_FORMAT |
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1966 " chunk_word_size " SIZE_FORMAT, |
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1967 word_size, chunk_word_size)); |
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1968 if (TraceMetadataHumongousAllocation && |
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1969 SpaceManager::is_humongous(word_size)) { |
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1970 gclog_or_tty->print_cr("Metadata humongous allocation:"); |
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1971 gclog_or_tty->print_cr(" word_size " PTR_FORMAT, word_size); |
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1972 gclog_or_tty->print_cr(" chunk_word_size " PTR_FORMAT, |
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1973 chunk_word_size); |
6885 | 1974 gclog_or_tty->print_cr(" chunk overhead " PTR_FORMAT, |
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1975 Metachunk::overhead()); |
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1976 } |
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1977 return chunk_word_size; |
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1978 } |
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1979 |
6885 | 1980 MetaWord* SpaceManager::grow_and_allocate(size_t word_size) { |
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1981 assert(vs_list()->current_virtual_space() != NULL, |
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1982 "Should have been set"); |
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1983 assert(current_chunk() == NULL || |
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1984 current_chunk()->allocate(word_size) == NULL, |
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1985 "Don't need to expand"); |
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1986 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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1987 |
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1988 if (TraceMetadataChunkAllocation && Verbose) { |
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1989 size_t words_left = 0; |
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1990 size_t words_used = 0; |
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1991 if (current_chunk() != NULL) { |
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1992 words_left = current_chunk()->free_word_size(); |
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1993 words_used = current_chunk()->used_word_size(); |
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1994 } |
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1995 gclog_or_tty->print_cr("SpaceManager::grow_and_allocate for " SIZE_FORMAT |
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1996 " words " SIZE_FORMAT " words used " SIZE_FORMAT |
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1997 " words left", |
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1998 word_size, words_used, words_left); |
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1999 } |
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2000 |
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2001 // Get another chunk out of the virtual space |
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2002 size_t grow_chunks_by_words = calc_chunk_size(word_size); |
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2003 Metachunk* next = get_new_chunk(word_size, grow_chunks_by_words); |
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2004 |
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2005 // If a chunk was available, add it to the in-use chunk list |
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2006 // and do an allocation from it. |
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2007 if (next != NULL) { |
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2008 Metadebug::deallocate_chunk_a_lot(this, grow_chunks_by_words); |
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2009 // Add to this manager's list of chunks in use. |
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2010 add_chunk(next, false); |
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2011 return next->allocate(word_size); |
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2012 } |
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2013 return NULL; |
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2014 } |
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2015 |
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2016 void SpaceManager::print_on(outputStream* st) const { |
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2017 |
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2018 for (ChunkIndex i = ZeroIndex; |
6885 | 2019 i < NumberOfInUseLists ; |
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2020 i = next_chunk_index(i) ) { |
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2021 st->print_cr(" chunks_in_use " PTR_FORMAT " chunk size " PTR_FORMAT, |
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2022 chunks_in_use(i), |
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2023 chunks_in_use(i) == NULL ? 0 : chunks_in_use(i)->word_size()); |
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2024 } |
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2025 st->print_cr(" waste: Small " SIZE_FORMAT " Medium " SIZE_FORMAT |
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2026 " Humongous " SIZE_FORMAT, |
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2027 sum_waste_in_chunks_in_use(SmallIndex), |
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2028 sum_waste_in_chunks_in_use(MediumIndex), |
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2029 sum_waste_in_chunks_in_use(HumongousIndex)); |
6885 | 2030 // block free lists |
2031 if (block_freelists() != NULL) { | |
2032 st->print_cr("total in block free lists " SIZE_FORMAT, | |
2033 block_freelists()->total_size()); | |
2034 } | |
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2035 } |
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2036 |
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2037 SpaceManager::SpaceManager(Metaspace::MetadataType mdtype, |
12303
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2038 Mutex* lock) : |
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2039 _mdtype(mdtype), |
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2040 _allocated_blocks_words(0), |
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2041 _allocated_chunks_words(0), |
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2042 _allocated_chunks_count(0), |
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2043 _lock(lock) |
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2044 { |
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2045 initialize(); |
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2046 } |
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2047 |
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2048 void SpaceManager::inc_size_metrics(size_t words) { |
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2049 assert_lock_strong(SpaceManager::expand_lock()); |
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2050 // Total of allocated Metachunks and allocated Metachunks count |
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2051 // for each SpaceManager |
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2052 _allocated_chunks_words = _allocated_chunks_words + words; |
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2053 _allocated_chunks_count++; |
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2054 // Global total of capacity in allocated Metachunks |
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2055 MetaspaceAux::inc_capacity(mdtype(), words); |
10183
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2056 // Global total of allocated Metablocks. |
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2057 // used_words_slow() includes the overhead in each |
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2058 // Metachunk so include it in the used when the |
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2059 // Metachunk is first added (so only added once per |
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2060 // Metachunk). |
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2061 MetaspaceAux::inc_used(mdtype(), Metachunk::overhead()); |
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2062 } |
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2063 |
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2064 void SpaceManager::inc_used_metrics(size_t words) { |
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2065 // Add to the per SpaceManager total |
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2066 Atomic::add_ptr(words, &_allocated_blocks_words); |
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2067 // Add to the global total |
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2068 MetaspaceAux::inc_used(mdtype(), words); |
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2069 } |
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2070 |
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2071 void SpaceManager::dec_total_from_size_metrics() { |
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2072 MetaspaceAux::dec_capacity(mdtype(), allocated_chunks_words()); |
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2073 MetaspaceAux::dec_used(mdtype(), allocated_blocks_words()); |
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2074 // Also deduct the overhead per Metachunk |
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2075 MetaspaceAux::dec_used(mdtype(), allocated_chunks_count() * Metachunk::overhead()); |
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2076 } |
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2077 |
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2078 void SpaceManager::initialize() { |
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2079 Metadebug::init_allocation_fail_alot_count(); |
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2080 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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2081 _chunks_in_use[i] = NULL; |
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2082 } |
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2083 _current_chunk = NULL; |
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2084 if (TraceMetadataChunkAllocation && Verbose) { |
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2085 gclog_or_tty->print_cr("SpaceManager(): " PTR_FORMAT, this); |
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2086 } |
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2087 } |
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2088 |
10101
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|
2089 void ChunkManager::return_chunks(ChunkIndex index, Metachunk* chunks) { |
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2090 if (chunks == NULL) { |
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2091 return; |
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|
2092 } |
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2093 ChunkList* list = free_chunks(index); |
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2094 assert(list->size() == chunks->word_size(), "Mismatch in chunk sizes"); |
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2095 assert_lock_strong(SpaceManager::expand_lock()); |
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2096 Metachunk* cur = chunks; |
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2097 |
10175 | 2098 // This returns chunks one at a time. If a new |
10101
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2099 // class List can be created that is a base class |
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2100 // of FreeList then something like FreeList::prepend() |
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2101 // can be used in place of this loop |
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2102 while (cur != NULL) { |
10175 | 2103 assert(cur->container() != NULL, "Container should have been set"); |
2104 cur->container()->dec_container_count(); | |
10101
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2105 // Capture the next link before it is changed |
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2106 // by the call to return_chunk_at_head(); |
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2107 Metachunk* next = cur->next(); |
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2108 cur->set_is_free(true); |
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|
2109 list->return_chunk_at_head(cur); |
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|
2110 cur = next; |
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2111 } |
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2112 } |
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2113 |
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2114 SpaceManager::~SpaceManager() { |
8784
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2115 // This call this->_lock which can't be done while holding expand_lock() |
10183
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2116 assert(sum_capacity_in_chunks_in_use() == allocated_chunks_words(), |
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2117 err_msg("sum_capacity_in_chunks_in_use() " SIZE_FORMAT |
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2118 " allocated_chunks_words() " SIZE_FORMAT, |
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2119 sum_capacity_in_chunks_in_use(), allocated_chunks_words())); |
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2120 |
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2121 MutexLockerEx fcl(SpaceManager::expand_lock(), |
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2122 Mutex::_no_safepoint_check_flag); |
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2123 |
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2124 chunk_manager()->slow_locked_verify(); |
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2125 |
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2126 dec_total_from_size_metrics(); |
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2127 |
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2128 if (TraceMetadataChunkAllocation && Verbose) { |
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2129 gclog_or_tty->print_cr("~SpaceManager(): " PTR_FORMAT, this); |
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2130 locked_print_chunks_in_use_on(gclog_or_tty); |
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2131 } |
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2132 |
10175 | 2133 // Do not mangle freed Metachunks. The chunk size inside Metachunks |
2134 // is during the freeing of a VirtualSpaceNodes. | |
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2135 |
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2136 // Have to update before the chunks_in_use lists are emptied |
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2137 // below. |
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2138 chunk_manager()->inc_free_chunks_total(allocated_chunks_words(), |
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2139 sum_count_in_chunks_in_use()); |
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2140 |
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2141 // Add all the chunks in use by this space manager |
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2142 // to the global list of free chunks. |
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2143 |
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2144 // Follow each list of chunks-in-use and add them to the |
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2145 // free lists. Each list is NULL terminated. |
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2146 |
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2147 for (ChunkIndex i = ZeroIndex; i < HumongousIndex; i = next_chunk_index(i)) { |
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2148 if (TraceMetadataChunkAllocation && Verbose) { |
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2149 gclog_or_tty->print_cr("returned %d %s chunks to freelist", |
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2150 sum_count_in_chunks_in_use(i), |
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2151 chunk_size_name(i)); |
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2152 } |
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2153 Metachunk* chunks = chunks_in_use(i); |
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2154 chunk_manager()->return_chunks(i, chunks); |
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2155 set_chunks_in_use(i, NULL); |
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2156 if (TraceMetadataChunkAllocation && Verbose) { |
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2157 gclog_or_tty->print_cr("updated freelist count %d %s", |
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2158 chunk_manager()->free_chunks(i)->count(), |
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2159 chunk_size_name(i)); |
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2160 } |
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2161 assert(i != HumongousIndex, "Humongous chunks are handled explicitly later"); |
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2162 } |
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2163 |
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2164 // The medium chunk case may be optimized by passing the head and |
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2165 // tail of the medium chunk list to add_at_head(). The tail is often |
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2166 // the current chunk but there are probably exceptions. |
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2167 |
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2168 // Humongous chunks |
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2169 if (TraceMetadataChunkAllocation && Verbose) { |
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2170 gclog_or_tty->print_cr("returned %d %s humongous chunks to dictionary", |
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2171 sum_count_in_chunks_in_use(HumongousIndex), |
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2172 chunk_size_name(HumongousIndex)); |
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2173 gclog_or_tty->print("Humongous chunk dictionary: "); |
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2174 } |
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2175 // Humongous chunks are never the current chunk. |
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2176 Metachunk* humongous_chunks = chunks_in_use(HumongousIndex); |
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|
2177 |
6885 | 2178 while (humongous_chunks != NULL) { |
2179 #ifdef ASSERT | |
2180 humongous_chunks->set_is_free(true); | |
2181 #endif | |
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2182 if (TraceMetadataChunkAllocation && Verbose) { |
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2183 gclog_or_tty->print(PTR_FORMAT " (" SIZE_FORMAT ") ", |
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2184 humongous_chunks, |
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2185 humongous_chunks->word_size()); |
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2186 } |
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2187 assert(humongous_chunks->word_size() == (size_t) |
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2188 align_size_up(humongous_chunks->word_size(), |
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2189 HumongousChunkGranularity), |
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|
2190 err_msg("Humongous chunk size is wrong: word size " SIZE_FORMAT |
8007
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|
2191 " granularity %d", |
7446
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2192 humongous_chunks->word_size(), HumongousChunkGranularity)); |
6885 | 2193 Metachunk* next_humongous_chunks = humongous_chunks->next(); |
10175 | 2194 humongous_chunks->container()->dec_container_count(); |
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2195 chunk_manager()->humongous_dictionary()->return_chunk(humongous_chunks); |
6885 | 2196 humongous_chunks = next_humongous_chunks; |
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2197 } |
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2198 if (TraceMetadataChunkAllocation && Verbose) { |
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2199 gclog_or_tty->print_cr(""); |
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2200 gclog_or_tty->print_cr("updated dictionary count %d %s", |
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2201 chunk_manager()->humongous_dictionary()->total_count(), |
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2202 chunk_size_name(HumongousIndex)); |
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2203 } |
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2204 chunk_manager()->slow_locked_verify(); |
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2205 } |
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2206 |
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|
2207 const char* SpaceManager::chunk_size_name(ChunkIndex index) const { |
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2208 switch (index) { |
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|
2209 case SpecializedIndex: |
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2210 return "Specialized"; |
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2211 case SmallIndex: |
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2212 return "Small"; |
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2213 case MediumIndex: |
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2214 return "Medium"; |
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2215 case HumongousIndex: |
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2216 return "Humongous"; |
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2217 default: |
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2218 return NULL; |
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2219 } |
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2220 } |
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2221 |
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2222 ChunkIndex ChunkManager::list_index(size_t size) { |
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2223 switch (size) { |
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2224 case SpecializedChunk: |
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2225 assert(SpecializedChunk == ClassSpecializedChunk, |
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2226 "Need branch for ClassSpecializedChunk"); |
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2227 return SpecializedIndex; |
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2228 case SmallChunk: |
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2229 case ClassSmallChunk: |
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2230 return SmallIndex; |
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2231 case MediumChunk: |
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2232 case ClassMediumChunk: |
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2233 return MediumIndex; |
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2234 default: |
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2235 assert(size > MediumChunk || size > ClassMediumChunk, |
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2236 "Not a humongous chunk"); |
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2237 return HumongousIndex; |
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2238 } |
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2239 } |
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2240 |
6885 | 2241 void SpaceManager::deallocate(MetaWord* p, size_t word_size) { |
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2242 assert_lock_strong(_lock); |
11966 | 2243 size_t raw_word_size = get_raw_word_size(word_size); |
6885 | 2244 size_t min_size = TreeChunk<Metablock, FreeList>::min_size(); |
11966 | 2245 assert(raw_word_size >= min_size, |
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2246 err_msg("Should not deallocate dark matter " SIZE_FORMAT "<" SIZE_FORMAT, word_size, min_size)); |
11966 | 2247 block_freelists()->return_block(p, raw_word_size); |
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2248 } |
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2249 |
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2250 // Adds a chunk to the list of chunks in use. |
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2251 void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) { |
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2252 |
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2253 assert(new_chunk != NULL, "Should not be NULL"); |
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2254 assert(new_chunk->next() == NULL, "Should not be on a list"); |
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2255 |
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2256 new_chunk->reset_empty(); |
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2257 |
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2258 // Find the correct list and and set the current |
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2259 // chunk for that list. |
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2260 ChunkIndex index = ChunkManager::list_index(new_chunk->word_size()); |
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2261 |
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2262 if (index != HumongousIndex) { |
12231
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2263 retire_current_chunk(); |
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2264 set_current_chunk(new_chunk); |
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2265 new_chunk->set_next(chunks_in_use(index)); |
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2266 set_chunks_in_use(index, new_chunk); |
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2267 } else { |
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2268 // For null class loader data and DumpSharedSpaces, the first chunk isn't |
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2269 // small, so small will be null. Link this first chunk as the current |
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2270 // chunk. |
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2271 if (make_current) { |
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2272 // Set as the current chunk but otherwise treat as a humongous chunk. |
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2273 set_current_chunk(new_chunk); |
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2274 } |
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2275 // Link at head. The _current_chunk only points to a humongous chunk for |
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2276 // the null class loader metaspace (class and data virtual space managers) |
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2277 // any humongous chunks so will not point to the tail |
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2278 // of the humongous chunks list. |
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2279 new_chunk->set_next(chunks_in_use(HumongousIndex)); |
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2280 set_chunks_in_use(HumongousIndex, new_chunk); |
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2281 |
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2282 assert(new_chunk->word_size() > medium_chunk_size(), "List inconsistency"); |
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2283 } |
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2284 |
10183
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2285 // Add to the running sum of capacity |
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2286 inc_size_metrics(new_chunk->word_size()); |
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2287 |
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2288 assert(new_chunk->is_empty(), "Not ready for reuse"); |
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2289 if (TraceMetadataChunkAllocation && Verbose) { |
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2290 gclog_or_tty->print("SpaceManager::add_chunk: %d) ", |
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2291 sum_count_in_chunks_in_use()); |
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2292 new_chunk->print_on(gclog_or_tty); |
12303
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2293 chunk_manager()->locked_print_free_chunks(gclog_or_tty); |
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2294 } |
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2295 } |
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2296 |
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2297 void SpaceManager::retire_current_chunk() { |
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2298 if (current_chunk() != NULL) { |
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2299 size_t remaining_words = current_chunk()->free_word_size(); |
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2300 if (remaining_words >= TreeChunk<Metablock, FreeList>::min_size()) { |
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2301 block_freelists()->return_block(current_chunk()->allocate(remaining_words), remaining_words); |
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2302 inc_used_metrics(remaining_words); |
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2303 } |
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2304 } |
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2305 } |
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2306 |
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2307 Metachunk* SpaceManager::get_new_chunk(size_t word_size, |
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2308 size_t grow_chunks_by_words) { |
12303
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2309 // Get a chunk from the chunk freelist |
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2310 Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words); |
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2311 |
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2312 if (next == NULL) { |
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2313 next = vs_list()->get_new_chunk(word_size, |
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2314 grow_chunks_by_words, |
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|
2315 medium_chunk_bunch()); |
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2316 } |
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2317 |
12239 | 2318 if (TraceMetadataHumongousAllocation && next != NULL && |
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2319 SpaceManager::is_humongous(next->word_size())) { |
12239 | 2320 gclog_or_tty->print_cr(" new humongous chunk word size " |
2321 PTR_FORMAT, next->word_size()); | |
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2322 } |
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2323 |
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2324 return next; |
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2325 } |
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2326 |
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2327 MetaWord* SpaceManager::allocate(size_t word_size) { |
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2328 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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2329 |
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2330 size_t raw_word_size = get_raw_word_size(word_size); |
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2331 BlockFreelist* fl = block_freelists(); |
6885 | 2332 MetaWord* p = NULL; |
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2333 // Allocation from the dictionary is expensive in the sense that |
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2334 // the dictionary has to be searched for a size. Don't allocate |
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2335 // from the dictionary until it starts to get fat. Is this |
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2336 // a reasonable policy? Maybe an skinny dictionary is fast enough |
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2337 // for allocations. Do some profiling. JJJ |
6885 | 2338 if (fl->total_size() > allocation_from_dictionary_limit) { |
2339 p = fl->get_block(raw_word_size); | |
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2340 } |
6885 | 2341 if (p == NULL) { |
2342 p = allocate_work(raw_word_size); | |
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2343 } |
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2344 Metadebug::deallocate_block_a_lot(this, raw_word_size); |
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2345 |
6885 | 2346 return p; |
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2347 } |
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2348 |
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2349 // Returns the address of spaced allocated for "word_size". |
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2350 // This methods does not know about blocks (Metablocks) |
6885 | 2351 MetaWord* SpaceManager::allocate_work(size_t word_size) { |
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2352 assert_lock_strong(_lock); |
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2353 #ifdef ASSERT |
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2354 if (Metadebug::test_metadata_failure()) { |
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2355 return NULL; |
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2356 } |
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2357 #endif |
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2358 // Is there space in the current chunk? |
6885 | 2359 MetaWord* result = NULL; |
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2360 |
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2361 // For DumpSharedSpaces, only allocate out of the current chunk which is |
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2362 // never null because we gave it the size we wanted. Caller reports out |
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2363 // of memory if this returns null. |
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2364 if (DumpSharedSpaces) { |
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2365 assert(current_chunk() != NULL, "should never happen"); |
10183
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2366 inc_used_metrics(word_size); |
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2367 return current_chunk()->allocate(word_size); // caller handles null result |
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2368 } |
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2369 if (current_chunk() != NULL) { |
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2370 result = current_chunk()->allocate(word_size); |
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2371 } |
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2372 |
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2373 if (result == NULL) { |
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2374 result = grow_and_allocate(word_size); |
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|
2375 } |
12056
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hseigel
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2376 if (result != 0) { |
10183
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|
2377 inc_used_metrics(word_size); |
6885 | 2378 assert(result != (MetaWord*) chunks_in_use(MediumIndex), |
2379 "Head of the list is being allocated"); | |
6725
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|
2380 } |
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|
2381 |
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|
2382 return result; |
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parents:
diff
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|
2383 } |
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|
2384 |
da91efe96a93
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diff
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|
2385 void SpaceManager::verify() { |
da91efe96a93
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diff
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|
2386 // If there are blocks in the dictionary, then |
da91efe96a93
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diff
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|
2387 // verfication of chunks does not work since |
da91efe96a93
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diff
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|
2388 // being in the dictionary alters a chunk. |
6885 | 2389 if (block_freelists()->total_size() == 0) { |
7446
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|
2390 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
6725
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|
2391 Metachunk* curr = chunks_in_use(i); |
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diff
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|
2392 while (curr != NULL) { |
da91efe96a93
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coleenp
parents:
diff
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|
2393 curr->verify(); |
7208
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jmasa
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7187
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|
2394 verify_chunk_size(curr); |
6725
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diff
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|
2395 curr = curr->next(); |
da91efe96a93
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|
2396 } |
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|
2397 } |
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diff
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|
2398 } |
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diff
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|
2399 } |
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diff
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|
2400 |
7208
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jmasa
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7187
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|
2401 void SpaceManager::verify_chunk_size(Metachunk* chunk) { |
eade6b2e4782
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jmasa
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7187
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|
2402 assert(is_humongous(chunk->word_size()) || |
7446
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|
2403 chunk->word_size() == medium_chunk_size() || |
e51c9860cf66
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jmasa
parents:
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diff
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|
2404 chunk->word_size() == small_chunk_size() || |
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jmasa
parents:
7435
diff
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|
2405 chunk->word_size() == specialized_chunk_size(), |
7208
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8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2406 "Chunk size is wrong"); |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
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|
2407 return; |
eade6b2e4782
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jmasa
parents:
7187
diff
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|
2408 } |
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|
2409 |
6725
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diff
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|
2410 #ifdef ASSERT |
10183
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|
2411 void SpaceManager::verify_allocated_blocks_words() { |
6725
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diff
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|
2412 // Verification is only guaranteed at a safepoint. |
10183
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|
2413 assert(SafepointSynchronize::is_at_safepoint() || !Universe::is_fully_initialized(), |
868d87ed63c8
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|
2414 "Verification can fail if the applications is running"); |
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|
2415 assert(allocated_blocks_words() == sum_used_in_chunks_in_use(), |
8007
d9058e388631
8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents:
7447
diff
changeset
|
2416 err_msg("allocation total is not consistent " SIZE_FORMAT |
d9058e388631
8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents:
7447
diff
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|
2417 " vs " SIZE_FORMAT, |
10183
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|
2418 allocated_blocks_words(), sum_used_in_chunks_in_use())); |
6725
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diff
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|
2419 } |
da91efe96a93
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diff
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|
2420 |
da91efe96a93
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coleenp
parents:
diff
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|
2421 #endif |
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diff
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|
2422 |
da91efe96a93
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coleenp
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diff
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|
2423 void SpaceManager::dump(outputStream* const out) const { |
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diff
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|
2424 size_t curr_total = 0; |
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diff
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|
2425 size_t waste = 0; |
da91efe96a93
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parents:
diff
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|
2426 uint i = 0; |
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coleenp
parents:
diff
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|
2427 size_t used = 0; |
da91efe96a93
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coleenp
parents:
diff
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|
2428 size_t capacity = 0; |
da91efe96a93
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coleenp
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diff
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|
2429 |
da91efe96a93
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coleenp
parents:
diff
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|
2430 // Add up statistics for all chunks in this SpaceManager. |
7446
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jmasa
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7435
diff
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|
2431 for (ChunkIndex index = ZeroIndex; |
6885 | 2432 index < NumberOfInUseLists; |
6725
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diff
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|
2433 index = next_chunk_index(index)) { |
da91efe96a93
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diff
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|
2434 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
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diff
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|
2435 curr != NULL; |
da91efe96a93
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coleenp
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diff
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|
2436 curr = curr->next()) { |
da91efe96a93
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parents:
diff
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|
2437 out->print("%d) ", i++); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2438 curr->print_on(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2439 curr_total += curr->word_size(); |
da91efe96a93
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coleenp
parents:
diff
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|
2440 used += curr->used_word_size(); |
da91efe96a93
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coleenp
parents:
diff
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|
2441 capacity += curr->capacity_word_size(); |
da91efe96a93
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parents:
diff
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|
2442 waste += curr->free_word_size() + curr->overhead();; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2443 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2444 } |
da91efe96a93
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parents:
diff
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|
2445 |
12239 | 2446 if (TraceMetadataChunkAllocation && Verbose) { |
2447 block_freelists()->print_on(out); | |
2448 } | |
2449 | |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
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7435
diff
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|
2450 size_t free = current_chunk() == NULL ? 0 : current_chunk()->free_word_size(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2451 // Free space isn't wasted. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2452 waste -= free; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2453 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2454 out->print_cr("total of all chunks " SIZE_FORMAT " used " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2455 " free " SIZE_FORMAT " capacity " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2456 " waste " SIZE_FORMAT, curr_total, used, free, capacity, waste); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2457 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2458 |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6969
diff
changeset
|
2459 #ifndef PRODUCT |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2460 void SpaceManager::mangle_freed_chunks() { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2461 for (ChunkIndex index = ZeroIndex; |
6885 | 2462 index < NumberOfInUseLists; |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2463 index = next_chunk_index(index)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2464 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2465 curr != NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2466 curr = curr->next()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2467 curr->mangle(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2468 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2469 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2470 } |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6969
diff
changeset
|
2471 #endif // PRODUCT |
6725
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coleenp
parents:
diff
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|
2472 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2473 // MetaspaceAux |
da91efe96a93
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coleenp
parents:
diff
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|
2474 |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
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10175
diff
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|
2475 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
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|
2476 size_t MetaspaceAux::_allocated_capacity_words[] = {0, 0}; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
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|
2477 size_t MetaspaceAux::_allocated_used_words[] = {0, 0}; |
10183
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jmasa
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|
2478 |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
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|
2479 size_t MetaspaceAux::free_bytes(Metaspace::MetadataType mdtype) { |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2480 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2481 return list == NULL ? 0 : list->free_bytes(); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2482 } |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2483 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2484 size_t MetaspaceAux::free_bytes() { |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2485 return free_bytes(Metaspace::ClassType) + free_bytes(Metaspace::NonClassType); |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
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|
2486 } |
868d87ed63c8
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jmasa
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10175
diff
changeset
|
2487 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2488 void MetaspaceAux::dec_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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jmasa
parents:
10175
diff
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|
2489 assert_lock_strong(SpaceManager::expand_lock()); |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2490 assert(words <= allocated_capacity_words(mdtype), |
10183
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jmasa
parents:
10175
diff
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|
2491 err_msg("About to decrement below 0: words " SIZE_FORMAT |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
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|
2492 " is greater than _allocated_capacity_words[%u] " SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2493 words, mdtype, allocated_capacity_words(mdtype))); |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2494 _allocated_capacity_words[mdtype] -= words; |
10183
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jmasa
parents:
10175
diff
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|
2495 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2496 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2497 void MetaspaceAux::inc_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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jmasa
parents:
10175
diff
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|
2498 assert_lock_strong(SpaceManager::expand_lock()); |
868d87ed63c8
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jmasa
parents:
10175
diff
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|
2499 // Needs to be atomic |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
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|
2500 _allocated_capacity_words[mdtype] += words; |
10183
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jmasa
parents:
10175
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|
2501 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
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diff
changeset
|
2502 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2503 void MetaspaceAux::dec_used(Metaspace::MetadataType mdtype, size_t words) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2504 assert(words <= allocated_used_words(mdtype), |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2505 err_msg("About to decrement below 0: words " SIZE_FORMAT |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2506 " is greater than _allocated_used_words[%u] " SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2507 words, mdtype, allocated_used_words(mdtype))); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2508 // For CMS deallocation of the Metaspaces occurs during the |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2509 // sweep which is a concurrent phase. Protection by the expand_lock() |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2510 // is not enough since allocation is on a per Metaspace basis |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2511 // and protected by the Metaspace lock. |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2512 jlong minus_words = (jlong) - (jlong) words; |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2513 Atomic::add_ptr(minus_words, &_allocated_used_words[mdtype]); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2514 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2515 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2516 void MetaspaceAux::inc_used(Metaspace::MetadataType mdtype, size_t words) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2517 // _allocated_used_words tracks allocations for |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2518 // each piece of metadata. Those allocations are |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2519 // generally done concurrently by different application |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2520 // threads so must be done atomically. |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
changeset
|
2521 Atomic::add_ptr(words, &_allocated_used_words[mdtype]); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2522 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2523 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2524 size_t MetaspaceAux::used_bytes_slow(Metaspace::MetadataType mdtype) { |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2525 size_t used = 0; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2526 ClassLoaderDataGraphMetaspaceIterator iter; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2527 while (iter.repeat()) { |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2528 Metaspace* msp = iter.get_next(); |
10183
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2529 // Sum allocated_blocks_words for each metaspace |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2530 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2531 used += msp->used_words_slow(mdtype); |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2532 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2533 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2534 return used * BytesPerWord; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2535 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2536 |
12235 | 2537 size_t MetaspaceAux::free_bytes_slow(Metaspace::MetadataType mdtype) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2538 size_t free = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2539 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2540 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2541 Metaspace* msp = iter.get_next(); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2542 if (msp != NULL) { |
12235 | 2543 free += msp->free_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2544 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2545 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2546 return free * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2547 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2548 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2549 size_t MetaspaceAux::capacity_bytes_slow(Metaspace::MetadataType mdtype) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
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11966
diff
changeset
|
2550 if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2551 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2552 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2553 // 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
|
2554 // added to the capacity calculation as needed. |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2555 size_t capacity = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2556 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2557 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2558 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2559 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2560 capacity += msp->capacity_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2561 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2562 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2563 return capacity * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2564 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2565 |
12235 | 2566 size_t MetaspaceAux::capacity_bytes_slow() { |
2567 #ifdef PRODUCT | |
2568 // Use allocated_capacity_bytes() in PRODUCT instead of this function. | |
2569 guarantee(false, "Should not call capacity_bytes_slow() in the PRODUCT"); | |
2570 #endif | |
2571 size_t class_capacity = capacity_bytes_slow(Metaspace::ClassType); | |
2572 size_t non_class_capacity = capacity_bytes_slow(Metaspace::NonClassType); | |
2573 assert(allocated_capacity_bytes() == class_capacity + non_class_capacity, | |
2574 err_msg("bad accounting: allocated_capacity_bytes() " SIZE_FORMAT | |
2575 " class_capacity + non_class_capacity " SIZE_FORMAT | |
2576 " class_capacity " SIZE_FORMAT " non_class_capacity " SIZE_FORMAT, | |
2577 allocated_capacity_bytes(), class_capacity + non_class_capacity, | |
2578 class_capacity, non_class_capacity)); | |
2579 | |
2580 return class_capacity + non_class_capacity; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2581 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2582 |
12235 | 2583 size_t MetaspaceAux::reserved_bytes(Metaspace::MetadataType mdtype) { |
2584 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); | |
12236
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2585 return list == NULL ? 0 : list->reserved_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2586 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2587 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2588 size_t MetaspaceAux::committed_bytes(Metaspace::MetadataType mdtype) { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2589 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2590 return list == NULL ? 0 : list->committed_bytes(); |
12235 | 2591 } |
2592 | |
2593 size_t MetaspaceAux::min_chunk_size_words() { return Metaspace::first_chunk_word_size(); } | |
2594 | |
2595 size_t MetaspaceAux::free_chunks_total_words(Metaspace::MetadataType mdtype) { | |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2596 ChunkManager* chunk_manager = Metaspace::get_chunk_manager(mdtype); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2597 if (chunk_manager == NULL) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2598 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2599 } |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2600 chunk_manager->slow_verify(); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2601 return chunk_manager->free_chunks_total_words(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2602 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2603 |
12235 | 2604 size_t MetaspaceAux::free_chunks_total_bytes(Metaspace::MetadataType mdtype) { |
2605 return free_chunks_total_words(mdtype) * BytesPerWord; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2606 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2607 |
12235 | 2608 size_t MetaspaceAux::free_chunks_total_words() { |
2609 return free_chunks_total_words(Metaspace::ClassType) + | |
2610 free_chunks_total_words(Metaspace::NonClassType); | |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2611 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2612 |
12235 | 2613 size_t MetaspaceAux::free_chunks_total_bytes() { |
2614 return free_chunks_total_words() * BytesPerWord; | |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2615 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2616 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2617 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
|
2618 gclog_or_tty->print(", [Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2619 if (PrintGCDetails && Verbose) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2620 gclog_or_tty->print(" " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2621 "->" SIZE_FORMAT |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2622 "(" SIZE_FORMAT ")", |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2623 prev_metadata_used, |
11037
df7e1c0e3dc1
8014546: MetaspaceAux print_metaspace_change() should print "used" after GC not capacity
jmasa
parents:
10376
diff
changeset
|
2624 allocated_used_bytes(), |
12235 | 2625 reserved_bytes()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2626 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2627 gclog_or_tty->print(" " SIZE_FORMAT "K" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2628 "->" SIZE_FORMAT "K" |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2629 "(" SIZE_FORMAT "K)", |
12235 | 2630 prev_metadata_used/K, |
2631 allocated_used_bytes()/K, | |
2632 reserved_bytes()/K); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2633 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2634 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2635 gclog_or_tty->print("]"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2636 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2637 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2638 // This is printed when PrintGCDetails |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2639 void MetaspaceAux::print_on(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2640 Metaspace::MetadataType nct = Metaspace::NonClassType; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2641 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2642 out->print_cr(" Metaspace total " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2643 SIZE_FORMAT "K, used " SIZE_FORMAT "K," |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2644 " reserved " SIZE_FORMAT "K", |
12235 | 2645 allocated_capacity_bytes()/K, allocated_used_bytes()/K, reserved_bytes()/K); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2646 |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2647 out->print_cr(" data space " |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2648 SIZE_FORMAT "K, used " SIZE_FORMAT "K," |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2649 " reserved " SIZE_FORMAT "K", |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2650 allocated_capacity_bytes(nct)/K, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2651 allocated_used_bytes(nct)/K, |
12235 | 2652 reserved_bytes(nct)/K); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2653 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2654 Metaspace::MetadataType ct = Metaspace::ClassType; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2655 out->print_cr(" class space " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2656 SIZE_FORMAT "K, used " SIZE_FORMAT "K," |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2657 " reserved " SIZE_FORMAT "K", |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2658 allocated_capacity_bytes(ct)/K, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2659 allocated_used_bytes(ct)/K, |
12235 | 2660 reserved_bytes(ct)/K); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2661 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2662 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2663 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2664 // Print information for class space and data space separately. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2665 // This is almost the same as above. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2666 void MetaspaceAux::print_on(outputStream* out, Metaspace::MetadataType mdtype) { |
12235 | 2667 size_t free_chunks_capacity_bytes = free_chunks_total_bytes(mdtype); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2668 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
|
2669 size_t used_bytes = used_bytes_slow(mdtype); |
12235 | 2670 size_t free_bytes = free_bytes_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2671 size_t used_and_free = used_bytes + free_bytes + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2672 free_chunks_capacity_bytes; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2673 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
|
2674 "K + unused in chunks " SIZE_FORMAT "K + " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2675 " capacity in free chunks " SIZE_FORMAT "K = " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2676 "K capacity in allocated chunks " SIZE_FORMAT "K", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2677 used_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2678 free_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2679 free_chunks_capacity_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2680 used_and_free / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2681 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
|
2682 // 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
|
2683 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
|
2684 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2685 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2686 // Print total fragmentation for class metaspaces |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2687 void MetaspaceAux::print_class_waste(outputStream* out) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2688 assert(Metaspace::using_class_space(), "class metaspace not used"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2689 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
|
2690 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
|
2691 ClassLoaderDataGraphMetaspaceIterator iter; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2692 while (iter.repeat()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2693 Metaspace* msp = iter.get_next(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2694 if (msp != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2695 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
|
2696 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
|
2697 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
|
2698 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
|
2699 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
|
2700 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
|
2701 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
|
2702 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2703 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2704 out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2705 SIZE_FORMAT " small(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2706 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2707 "large count " SIZE_FORMAT, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2708 cls_specialized_count, cls_specialized_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2709 cls_small_count, cls_small_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2710 cls_medium_count, cls_medium_waste, cls_humongous_count); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2711 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2712 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2713 // 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
|
2714 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
|
2715 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
|
2716 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
|
2717 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2718 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2719 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2720 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2721 if (msp != NULL) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2722 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
|
2723 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
|
2724 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
|
2725 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
|
2726 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
|
2727 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
|
2728 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
|
2729 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2730 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2731 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
|
2732 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
|
2733 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
|
2734 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
|
2735 "large count " SIZE_FORMAT, |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2736 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
|
2737 small_waste, medium_count, medium_waste, humongous_count); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2738 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2739 print_class_waste(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2740 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2741 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2742 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2743 // Dump global metaspace things from the end of ClassLoaderDataGraph |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2744 void MetaspaceAux::dump(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2745 out->print_cr("All Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2746 out->print("data space: "); print_on(out, Metaspace::NonClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2747 out->print("class space: "); print_on(out, Metaspace::ClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2748 print_waste(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2749 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2750 |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2751 void MetaspaceAux::verify_free_chunks() { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2752 Metaspace::chunk_manager_metadata()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2753 if (Metaspace::using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2754 Metaspace::chunk_manager_class()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2755 } |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2756 } |
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2757 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2758 void MetaspaceAux::verify_capacity() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2759 #ifdef ASSERT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2760 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
|
2761 // 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
|
2762 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
|
2763 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
|
2764 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
|
2765 " capacity_bytes_slow()" SIZE_FORMAT, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2766 running_sum_capacity_bytes, capacity_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2767 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2768 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2769 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
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|
2770 size_t capacity_in_use_bytes = capacity_bytes_slow(i); |
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
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|
2771 assert(allocated_capacity_bytes(i) == capacity_in_use_bytes, |
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
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|
2772 err_msg("allocated_capacity_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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|
2773 " capacity_bytes_slow(%u)" SIZE_FORMAT, |
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
changeset
|
2774 i, allocated_capacity_bytes(i), i, capacity_in_use_bytes)); |
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parents:
10191
diff
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|
2775 } |
10183
868d87ed63c8
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parents:
10175
diff
changeset
|
2776 #endif |
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parents:
10175
diff
changeset
|
2777 } |
868d87ed63c8
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parents:
10175
diff
changeset
|
2778 |
868d87ed63c8
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parents:
10175
diff
changeset
|
2779 void MetaspaceAux::verify_used() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2780 #ifdef ASSERT |
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2781 size_t running_sum_used_bytes = allocated_used_bytes(); |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2782 // For purposes of the running sum of used, verify against used |
10183
868d87ed63c8
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parents:
10175
diff
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|
2783 size_t used_in_use_bytes = used_bytes_slow(); |
868d87ed63c8
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jmasa
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10175
diff
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|
2784 assert(allocated_used_bytes() == used_in_use_bytes, |
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2785 err_msg("allocated_used_bytes() " SIZE_FORMAT |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
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|
2786 " used_bytes_slow()" SIZE_FORMAT, |
10183
868d87ed63c8
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parents:
10175
diff
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|
2787 allocated_used_bytes(), used_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
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diff
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|
2788 for (Metaspace::MetadataType i = Metaspace::ClassType; |
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
changeset
|
2789 i < Metaspace:: MetadataTypeCount; |
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
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|
2790 i = (Metaspace::MetadataType)(i + 1)) { |
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
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|
2791 size_t used_in_use_bytes = used_bytes_slow(i); |
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10191
diff
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|
2792 assert(allocated_used_bytes(i) == used_in_use_bytes, |
2b1a9d972fc2
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10191
diff
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|
2793 err_msg("allocated_used_bytes(%u) " SIZE_FORMAT |
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diff
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|
2794 " used_bytes_slow(%u)" SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
changeset
|
2795 i, allocated_used_bytes(i), i, used_in_use_bytes)); |
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10191
diff
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|
2796 } |
10183
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parents:
10175
diff
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|
2797 #endif |
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parents:
10175
diff
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|
2798 } |
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parents:
10175
diff
changeset
|
2799 |
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|
2800 void MetaspaceAux::verify_metrics() { |
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10175
diff
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|
2801 verify_capacity(); |
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jmasa
parents:
10175
diff
changeset
|
2802 verify_used(); |
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parents:
10175
diff
changeset
|
2803 } |
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parents:
10175
diff
changeset
|
2804 |
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parents:
10175
diff
changeset
|
2805 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2806 // Metaspace methods |
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diff
changeset
|
2807 |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2808 size_t Metaspace::_first_chunk_word_size = 0; |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2809 size_t Metaspace::_first_class_chunk_word_size = 0; |
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2810 |
e51c9860cf66
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parents:
7435
diff
changeset
|
2811 Metaspace::Metaspace(Mutex* lock, MetaspaceType type) { |
e51c9860cf66
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jmasa
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7435
diff
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|
2812 initialize(lock, type); |
6725
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2813 } |
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parents:
diff
changeset
|
2814 |
da91efe96a93
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parents:
diff
changeset
|
2815 Metaspace::~Metaspace() { |
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diff
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|
2816 delete _vsm; |
12056
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11966
diff
changeset
|
2817 if (using_class_space()) { |
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parents:
11966
diff
changeset
|
2818 delete _class_vsm; |
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11966
diff
changeset
|
2819 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2820 } |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2821 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2822 VirtualSpaceList* Metaspace::_space_list = NULL; |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2823 VirtualSpaceList* Metaspace::_class_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2824 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2825 ChunkManager* Metaspace::_chunk_manager_metadata = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2826 ChunkManager* Metaspace::_chunk_manager_class = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2827 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2828 #define VIRTUALSPACEMULTIPLIER 2 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2829 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
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parents:
11966
diff
changeset
|
2830 #ifdef _LP64 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2831 void Metaspace::set_narrow_klass_base_and_shift(address metaspace_base, address cds_base) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2832 // Figure out the narrow_klass_base and the narrow_klass_shift. The |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2833 // narrow_klass_base is the lower of the metaspace base and the cds base |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2834 // (if cds is enabled). The narrow_klass_shift depends on the distance |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2835 // between the lower base and higher address. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2836 address lower_base; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2837 address higher_address; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2838 if (UseSharedSpaces) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2839 higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2840 (address)(metaspace_base + class_metaspace_size())); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2841 lower_base = MIN2(metaspace_base, cds_base); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2842 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2843 higher_address = metaspace_base + class_metaspace_size(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2844 lower_base = metaspace_base; |
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 Universe::set_narrow_klass_base(lower_base); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2847 if ((uint64_t)(higher_address - lower_base) < (uint64_t)max_juint) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2848 Universe::set_narrow_klass_shift(0); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2849 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2850 assert(!UseSharedSpaces, "Cannot shift with UseSharedSpaces"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2851 Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes); |
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 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2854 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2855 // 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
|
2856 // to work with compressed klass pointers. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2857 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
|
2858 assert(cds_base != 0 && UseSharedSpaces, "Only use with CDS"); |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2859 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2860 address lower_base = MIN2((address)metaspace_base, cds_base); |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2861 address higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2862 (address)(metaspace_base + class_metaspace_size())); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2863 return ((uint64_t)(higher_address - lower_base) < (uint64_t)max_juint); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2864 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2865 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
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11966
diff
changeset
|
2866 // Try to allocate the metaspace at the requested addr. |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2867 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
|
2868 assert(using_class_space(), "called improperly"); |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
2869 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2870 assert(class_metaspace_size() < KlassEncodingMetaspaceMax, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2871 "Metaspace size is too big"); |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2872 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2873 ReservedSpace metaspace_rs = ReservedSpace(class_metaspace_size(), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2874 os::vm_allocation_granularity(), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2875 false, requested_addr, 0); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2876 if (!metaspace_rs.is_reserved()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2877 if (UseSharedSpaces) { |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
2878 // Keep trying to allocate the metaspace, increasing the requested_addr |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2879 // 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
|
2880 // use of CDS with compressed klass pointers. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2881 char *addr = requested_addr; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2882 while (!metaspace_rs.is_reserved() && (addr + 1*G > addr) && |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2883 can_use_cds_with_metaspace_addr(addr + 1*G, cds_base)) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2884 addr = addr + 1*G; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2885 metaspace_rs = ReservedSpace(class_metaspace_size(), |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2886 os::vm_allocation_granularity(), false, addr, 0); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2887 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2888 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2889 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2890 // If no successful allocation then try to allocate the space anywhere. If |
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2891 // that fails then OOM doom. At this point we cannot try allocating the |
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2892 // metaspace as if UseCompressedClassPointers is off because too much |
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2893 // initialization has happened that depends on UseCompressedClassPointers. |
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2894 // So, UseCompressedClassPointers cannot be turned off at this point. |
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2895 if (!metaspace_rs.is_reserved()) { |
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2896 metaspace_rs = ReservedSpace(class_metaspace_size(), |
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2897 os::vm_allocation_granularity(), false); |
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2898 if (!metaspace_rs.is_reserved()) { |
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2899 vm_exit_during_initialization(err_msg("Could not allocate metaspace: %d bytes", |
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|
2900 class_metaspace_size())); |
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|
2901 } |
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|
2902 } |
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|
2903 } |
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|
2904 |
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|
2905 // If we got here then the metaspace got allocated. |
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|
2906 MemTracker::record_virtual_memory_type((address)metaspace_rs.base(), mtClass); |
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|
2907 |
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|
2908 // Verify that we can use shared spaces. Otherwise, turn off CDS. |
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2909 if (UseSharedSpaces && !can_use_cds_with_metaspace_addr(metaspace_rs.base(), cds_base)) { |
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|
2910 FileMapInfo::stop_sharing_and_unmap( |
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|
2911 "Could not allocate metaspace at a compatible address"); |
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|
2912 } |
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|
2913 |
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|
2914 set_narrow_klass_base_and_shift((address)metaspace_rs.base(), |
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2915 UseSharedSpaces ? (address)cds_base : 0); |
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|
2916 |
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|
2917 initialize_class_space(metaspace_rs); |
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|
2918 |
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|
2919 if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) { |
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|
2920 gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: " SIZE_FORMAT, |
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|
2921 Universe::narrow_klass_base(), Universe::narrow_klass_shift()); |
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2922 gclog_or_tty->print_cr("Metaspace Size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT, |
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|
2923 class_metaspace_size(), metaspace_rs.base(), requested_addr); |
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|
2924 } |
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|
2925 } |
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|
2926 |
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2927 // For UseCompressedClassPointers the class space is reserved above the top of |
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2928 // the Java heap. The argument passed in is at the base of the compressed space. |
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2929 void Metaspace::initialize_class_space(ReservedSpace rs) { |
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2930 // The reserved space size may be bigger because of alignment, esp with UseLargePages |
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2931 assert(rs.size() >= CompressedClassSpaceSize, |
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2932 err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize)); |
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2933 assert(using_class_space(), "Must be using class space"); |
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|
2934 _class_space_list = new VirtualSpaceList(rs); |
12303
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|
2935 _chunk_manager_class = new ChunkManager(SpecializedChunk, ClassSmallChunk, ClassMediumChunk); |
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|
2936 } |
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|
2937 |
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|
2938 #endif |
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|
2939 |
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|
2940 void Metaspace::global_initialize() { |
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|
2941 // Initialize the alignment for shared spaces. |
da91efe96a93
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|
2942 int max_alignment = os::vm_page_size(); |
12056
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|
2943 size_t cds_total = 0; |
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|
2944 |
12226
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2945 set_class_metaspace_size(align_size_up(CompressedClassSpaceSize, |
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2946 os::vm_allocation_granularity())); |
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|
2947 |
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|
2948 MetaspaceShared::set_max_alignment(max_alignment); |
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|
2949 |
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|
2950 if (DumpSharedSpaces) { |
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|
2951 SharedReadOnlySize = align_size_up(SharedReadOnlySize, max_alignment); |
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|
2952 SharedReadWriteSize = align_size_up(SharedReadWriteSize, max_alignment); |
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|
2953 SharedMiscDataSize = align_size_up(SharedMiscDataSize, max_alignment); |
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|
2954 SharedMiscCodeSize = align_size_up(SharedMiscCodeSize, max_alignment); |
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diff
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|
2955 |
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|
2956 // Initialize with the sum of the shared space sizes. The read-only |
da91efe96a93
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diff
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|
2957 // and read write metaspace chunks will be allocated out of this and the |
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diff
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|
2958 // remainder is the misc code and data chunks. |
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|
2959 cds_total = FileMapInfo::shared_spaces_size(); |
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|
2960 _space_list = new VirtualSpaceList(cds_total/wordSize); |
12303
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|
2961 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk); |
12056
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|
2962 |
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diff
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|
2963 #ifdef _LP64 |
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|
2964 // Set the compressed klass pointer base so that decoding of these pointers works |
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|
2965 // properly when creating the shared archive. |
12226
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|
2966 assert(UseCompressedOops && UseCompressedClassPointers, |
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|
2967 "UseCompressedOops and UseCompressedClassPointers must be set"); |
12056
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|
2968 Universe::set_narrow_klass_base((address)_space_list->current_virtual_space()->bottom()); |
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|
2969 if (TraceMetavirtualspaceAllocation && Verbose) { |
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|
2970 gclog_or_tty->print_cr("Setting_narrow_klass_base to Address: " PTR_FORMAT, |
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|
2971 _space_list->current_virtual_space()->bottom()); |
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diff
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|
2972 } |
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|
2973 |
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diff
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|
2974 // Set the shift to zero. |
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|
2975 assert(class_metaspace_size() < (uint64_t)(max_juint) - cds_total, |
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|
2976 "CDS region is too large"); |
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|
2977 Universe::set_narrow_klass_shift(0); |
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diff
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|
2978 #endif |
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|
2979 |
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|
2980 } else { |
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|
2981 // If using shared space, open the file that contains the shared space |
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|
2982 // and map in the memory before initializing the rest of metaspace (so |
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|
2983 // the addresses don't conflict) |
12056
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|
2984 address cds_address = NULL; |
6725
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|
2985 if (UseSharedSpaces) { |
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|
2986 FileMapInfo* mapinfo = new FileMapInfo(); |
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coleenp
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diff
changeset
|
2987 memset(mapinfo, 0, sizeof(FileMapInfo)); |
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diff
changeset
|
2988 |
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|
2989 // Open the shared archive file, read and validate the header. If |
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|
2990 // initialization fails, shared spaces [UseSharedSpaces] are |
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diff
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|
2991 // disabled and the file is closed. |
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diff
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|
2992 // Map in spaces now also |
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|
2993 if (mapinfo->initialize() && MetaspaceShared::map_shared_spaces(mapinfo)) { |
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|
2994 FileMapInfo::set_current_info(mapinfo); |
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|
2995 } else { |
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diff
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|
2996 assert(!mapinfo->is_open() && !UseSharedSpaces, |
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coleenp
parents:
diff
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|
2997 "archive file not closed or shared spaces not disabled."); |
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diff
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|
2998 } |
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|
2999 cds_total = FileMapInfo::shared_spaces_size(); |
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|
3000 cds_address = (address)mapinfo->region_base(0); |
6725
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|
3001 } |
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diff
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|
3002 |
12056
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|
3003 #ifdef _LP64 |
12226
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|
3004 // If UseCompressedClassPointers is set then allocate the metaspace area |
12056
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|
3005 // above the heap and above the CDS area (if it exists). |
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11966
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|
3006 if (using_class_space()) { |
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|
3007 if (UseSharedSpaces) { |
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|
3008 allocate_metaspace_compressed_klass_ptrs((char *)(cds_address + cds_total), cds_address); |
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|
3009 } else { |
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|
3010 allocate_metaspace_compressed_klass_ptrs((char *)CompressedKlassPointersBase, 0); |
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|
3011 } |
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|
3012 } |
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diff
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|
3013 #endif |
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diff
changeset
|
3014 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3015 // Initialize these before initializing the VirtualSpaceList |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3016 _first_chunk_word_size = InitialBootClassLoaderMetaspaceSize / BytesPerWord; |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3017 _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
|
3018 // Make the first class chunk bigger than a medium chunk so it's not put |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3019 // on the medium chunk list. The next chunk will be small and progress |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3020 // from there. This size calculated by -version. |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3021 _first_class_chunk_word_size = MIN2((size_t)MediumChunk*6, |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3022 (CompressedClassSpaceSize/BytesPerWord)*2); |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3023 _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
|
3024 // Arbitrarily set the initial virtual space to a multiple |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3025 // of the boot class loader size. |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3026 size_t word_size = VIRTUALSPACEMULTIPLIER * first_chunk_word_size(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3027 // Initialize the list of virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3028 _space_list = new VirtualSpaceList(word_size); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3029 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3030 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3031 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3032 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3033 Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3034 size_t chunk_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3035 size_t chunk_bunch) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3036 // Get a chunk from the chunk freelist |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3037 Metachunk* chunk = get_chunk_manager(mdtype)->chunk_freelist_allocate(chunk_word_size); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3038 if (chunk != NULL) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3039 return chunk; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3040 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3041 |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3042 return get_space_list(mdtype)->get_initialization_chunk(chunk_word_size, chunk_bunch); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3043 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3044 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3045 void Metaspace::initialize(Mutex* lock, MetaspaceType type) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3046 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3047 assert(space_list() != NULL, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3048 "Metadata VirtualSpaceList has not been initialized"); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3049 assert(chunk_manager_metadata() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3050 "Metadata ChunkManager has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3051 |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3052 _vsm = new SpaceManager(NonClassType, lock); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3053 if (_vsm == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3054 return; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3055 } |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3056 size_t word_size; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3057 size_t class_word_size; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3058 vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3059 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3060 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3061 assert(class_space_list() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3062 "Class VirtualSpaceList has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3063 assert(chunk_manager_class() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3064 "Class ChunkManager has not been initialized"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3065 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3066 // Allocate SpaceManager for classes. |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3067 _class_vsm = new SpaceManager(ClassType, lock); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3068 if (_class_vsm == NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3069 return; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3070 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3071 } |
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 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
|
3074 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3075 // Allocate chunk for metadata objects |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3076 Metachunk* new_chunk = get_initialization_chunk(NonClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3077 word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3078 vsm()->medium_chunk_bunch()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3079 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
|
3080 if (new_chunk != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3081 // 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
|
3082 vsm()->add_chunk(new_chunk, true); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3083 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3084 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3085 // Allocate chunk for class metadata objects |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3086 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3087 Metachunk* class_chunk = get_initialization_chunk(ClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3088 class_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3089 class_vsm()->medium_chunk_bunch()); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3090 if (class_chunk != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3091 class_vsm()->add_chunk(class_chunk, true); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3092 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3093 } |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3094 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3095 _alloc_record_head = NULL; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3096 _alloc_record_tail = NULL; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3097 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3098 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3099 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
|
3100 size_t byte_size = word_size * wordSize; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3101 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
|
3102 } |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3103 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3104 MetaWord* Metaspace::allocate(size_t word_size, MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3105 // DumpSharedSpaces doesn't use class metadata area (yet) |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3106 // Also, don't use class_vsm() unless UseCompressedClassPointers is true. |
12340
bc918fd1e584
8025279: metaspace/flags/maxMetaspaceSize throws OOM: out of Compressed Klass space
mgerdin
parents:
12306
diff
changeset
|
3107 if (is_class_space_allocation(mdtype)) { |
6885 | 3108 return class_vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3109 } else { |
6885 | 3110 return vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3111 } |
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 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3114 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
|
3115 MetaWord* result; |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3116 MetaspaceGC::set_expand_after_GC(true); |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3117 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
|
3118 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
|
3119 MetaspaceGC::inc_capacity_until_GC(delta_bytes); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3120 if (PrintGCDetails && Verbose) { |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3121 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
|
3122 " 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
|
3123 } |
6885 | 3124 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3125 result = allocate(word_size, mdtype); |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3126 |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3127 return result; |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3128 } |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3129 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3130 // Space allocated in the Metaspace. This may |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3131 // be across several metadata virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3132 char* Metaspace::bottom() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3133 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
|
3134 return (char*)vsm()->current_chunk()->bottom(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3135 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3136 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3137 size_t Metaspace::used_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3138 if (mdtype == ClassType) { |
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3139 return using_class_space() ? class_vsm()->sum_used_in_chunks_in_use() : 0; |
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|
3140 } else { |
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|
3141 return vsm()->sum_used_in_chunks_in_use(); // includes overhead! |
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|
3142 } |
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diff
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|
3143 } |
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|
3144 |
12235 | 3145 size_t Metaspace::free_words_slow(MetadataType mdtype) const { |
12056
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diff
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|
3146 if (mdtype == ClassType) { |
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|
3147 return using_class_space() ? class_vsm()->sum_free_in_chunks_in_use() : 0; |
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hseigel
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|
3148 } else { |
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|
3149 return vsm()->sum_free_in_chunks_in_use(); |
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|
3150 } |
6725
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diff
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|
3151 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
3152 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3153 // Space capacity in the Metaspace. It includes |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3154 // space in the list of chunks from which allocations |
da91efe96a93
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coleenp
parents:
diff
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|
3155 // have been made. Don't include space in the global freelist and |
da91efe96a93
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coleenp
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diff
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|
3156 // in the space available in the dictionary which |
da91efe96a93
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diff
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|
3157 // is already counted in some chunk. |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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|
3158 size_t Metaspace::capacity_words_slow(MetadataType mdtype) const { |
12056
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diff
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|
3159 if (mdtype == ClassType) { |
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|
3160 return using_class_space() ? class_vsm()->sum_capacity_in_chunks_in_use() : 0; |
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diff
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|
3161 } else { |
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|
3162 return vsm()->sum_capacity_in_chunks_in_use(); |
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|
3163 } |
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|
3164 } |
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|
3165 |
10183
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|
3166 size_t Metaspace::used_bytes_slow(MetadataType mdtype) const { |
868d87ed63c8
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|
3167 return used_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
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|
3168 } |
868d87ed63c8
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|
3169 |
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|
3170 size_t Metaspace::capacity_bytes_slow(MetadataType mdtype) const { |
868d87ed63c8
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|
3171 return capacity_words_slow(mdtype) * BytesPerWord; |
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|
3172 } |
868d87ed63c8
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|
3173 |
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|
3174 void Metaspace::deallocate(MetaWord* ptr, size_t word_size, bool is_class) { |
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|
3175 if (SafepointSynchronize::is_at_safepoint()) { |
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|
3176 assert(Thread::current()->is_VM_thread(), "should be the VM thread"); |
6885 | 3177 // 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
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diff
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|
3178 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
6885 | 3179 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
3180 // Dark matter. Too small for dictionary. | |
3181 #ifdef ASSERT | |
3182 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3183 #endif | |
3184 return; | |
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|
3185 } |
12056
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|
3186 if (is_class && using_class_space()) { |
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|
3187 class_vsm()->deallocate(ptr, word_size); |
6885 | 3188 } else { |
3189 vsm()->deallocate(ptr, word_size); | |
3190 } | |
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|
3191 } else { |
10191
601183f604b2
8013129: Possible deadlock with Metaspace locks due to mixed usage of safepoint aware and non-safepoint aware locking
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10183
diff
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|
3192 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
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diff
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|
3193 |
6885 | 3194 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
3195 // Dark matter. Too small for dictionary. | |
3196 #ifdef ASSERT | |
3197 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3198 #endif | |
3199 return; | |
6725
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diff
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|
3200 } |
12056
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|
3201 if (is_class && using_class_space()) { |
6885 | 3202 class_vsm()->deallocate(ptr, word_size); |
3203 } else { | |
3204 vsm()->deallocate(ptr, word_size); | |
3205 } | |
6725
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|
3206 } |
da91efe96a93
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diff
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|
3207 } |
da91efe96a93
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diff
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|
3208 |
6885 | 3209 Metablock* Metaspace::allocate(ClassLoaderData* loader_data, size_t word_size, |
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|
3210 bool read_only, MetaspaceObj::Type type, TRAPS) { |
6725
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diff
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|
3211 if (HAS_PENDING_EXCEPTION) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
3212 assert(false, "Should not allocate with exception pending"); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3213 return NULL; // caller does a CHECK_NULL too |
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diff
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|
3214 } |
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|
3215 |
10376
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|
3216 MetadataType mdtype = (type == MetaspaceObj::ClassType) ? ClassType : NonClassType; |
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|
3217 |
6725
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diff
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|
3218 // SSS: Should we align the allocations and make sure the sizes are aligned. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
3219 MetaWord* result = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
3220 |
da91efe96a93
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diff
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|
3221 assert(loader_data != NULL, "Should never pass around a NULL loader_data. " |
da91efe96a93
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diff
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|
3222 "ClassLoaderData::the_null_class_loader_data() should have been used."); |
da91efe96a93
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coleenp
parents:
diff
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|
3223 // Allocate in metaspaces without taking out a lock, because it deadlocks |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3224 // with the SymbolTable_lock. Dumping is single threaded for now. We'll have |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3225 // to revisit this for application class data sharing. |
da91efe96a93
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coleenp
parents:
diff
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|
3226 if (DumpSharedSpaces) { |
10376
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iklam
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diff
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|
3227 assert(type > MetaspaceObj::UnknownType && type < MetaspaceObj::_number_of_types, "sanity"); |
a1ebd310d5c1
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iklam
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|
3228 Metaspace* space = read_only ? loader_data->ro_metaspace() : loader_data->rw_metaspace(); |
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|
3229 result = space->allocate(word_size, NonClassType); |
6725
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diff
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|
3230 if (result == NULL) { |
da91efe96a93
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coleenp
parents:
diff
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|
3231 report_out_of_shared_space(read_only ? SharedReadOnly : SharedReadWrite); |
10376
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|
3232 } else { |
a1ebd310d5c1
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diff
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|
3233 space->record_allocation(result, type, space->vsm()->get_raw_word_size(word_size)); |
6725
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coleenp
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diff
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|
3234 } |
6885 | 3235 return Metablock::initialize(result, word_size); |
6725
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coleenp
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diff
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|
3236 } |
da91efe96a93
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diff
changeset
|
3237 |
da91efe96a93
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diff
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|
3238 result = loader_data->metaspace_non_null()->allocate(word_size, mdtype); |
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diff
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|
3239 |
da91efe96a93
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diff
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|
3240 if (result == NULL) { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3241 // Try to clean out some memory and retry. |
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coleenp
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diff
changeset
|
3242 result = |
6885 | 3243 Universe::heap()->collector_policy()->satisfy_failed_metadata_allocation( |
6725
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coleenp
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diff
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|
3244 loader_data, word_size, mdtype); |
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diff
changeset
|
3245 |
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|
3246 // If result is still null, we are out of memory. |
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|
3247 if (result == NULL) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3248 if (Verbose && TraceMetadataChunkAllocation) { |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
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7435
diff
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|
3249 gclog_or_tty->print_cr("Metaspace allocation failed for size " |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
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7435
diff
changeset
|
3250 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
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10376
diff
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|
3251 if (loader_data->metaspace_or_null() != NULL) loader_data->dump(gclog_or_tty); |
7446
e51c9860cf66
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|
3252 MetaspaceAux::dump(gclog_or_tty); |
e51c9860cf66
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7435
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|
3253 } |
6725
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diff
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|
3254 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support |
12340
bc918fd1e584
8025279: metaspace/flags/maxMetaspaceSize throws OOM: out of Compressed Klass space
mgerdin
parents:
12306
diff
changeset
|
3255 const char* space_string = is_class_space_allocation(mdtype) ? "Compressed class space" : |
bc918fd1e584
8025279: metaspace/flags/maxMetaspaceSize throws OOM: out of Compressed Klass space
mgerdin
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12306
diff
changeset
|
3256 "Metadata space"; |
11064
de2d15ce3d4a
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coleenp
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10376
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|
3257 report_java_out_of_memory(space_string); |
6725
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|
3258 |
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|
3259 if (JvmtiExport::should_post_resource_exhausted()) { |
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|
3260 JvmtiExport::post_resource_exhausted( |
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|
3261 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR, |
11064
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|
3262 space_string); |
6725
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|
3263 } |
12340
bc918fd1e584
8025279: metaspace/flags/maxMetaspaceSize throws OOM: out of Compressed Klass space
mgerdin
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12306
diff
changeset
|
3264 if (is_class_space_allocation(mdtype)) { |
11064
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|
3265 THROW_OOP_0(Universe::out_of_memory_error_class_metaspace()); |
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|
3266 } else { |
de2d15ce3d4a
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|
3267 THROW_OOP_0(Universe::out_of_memory_error_metaspace()); |
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|
3268 } |
6725
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|
3269 } |
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|
3270 } |
6885 | 3271 return Metablock::initialize(result, word_size); |
6725
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diff
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|
3272 } |
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|
3273 |
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|
3274 void Metaspace::record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size) { |
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|
3275 assert(DumpSharedSpaces, "sanity"); |
a1ebd310d5c1
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10330
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|
3276 |
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changeset
|
3277 AllocRecord *rec = new AllocRecord((address)ptr, type, (int)word_size * HeapWordSize); |
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|
3278 if (_alloc_record_head == NULL) { |
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iklam
parents:
10330
diff
changeset
|
3279 _alloc_record_head = _alloc_record_tail = rec; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3280 } else { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3281 _alloc_record_tail->_next = rec; |
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8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3282 _alloc_record_tail = rec; |
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iklam
parents:
10330
diff
changeset
|
3283 } |
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10330
diff
changeset
|
3284 } |
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iklam
parents:
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diff
changeset
|
3285 |
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8014912: Restore PrintSharedSpaces functionality after NPG
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parents:
10330
diff
changeset
|
3286 void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
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diff
changeset
|
3287 assert(DumpSharedSpaces, "unimplemented for !DumpSharedSpaces"); |
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parents:
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changeset
|
3288 |
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parents:
10330
diff
changeset
|
3289 address last_addr = (address)bottom(); |
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iklam
parents:
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diff
changeset
|
3290 |
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parents:
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diff
changeset
|
3291 for (AllocRecord *rec = _alloc_record_head; rec; rec = rec->_next) { |
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parents:
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diff
changeset
|
3292 address ptr = rec->_ptr; |
a1ebd310d5c1
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parents:
10330
diff
changeset
|
3293 if (last_addr < ptr) { |
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parents:
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diff
changeset
|
3294 closure->doit(last_addr, MetaspaceObj::UnknownType, ptr - last_addr); |
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parents:
10330
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changeset
|
3295 } |
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diff
changeset
|
3296 closure->doit(ptr, rec->_type, rec->_byte_size); |
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changeset
|
3297 last_addr = ptr + rec->_byte_size; |
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parents:
10330
diff
changeset
|
3298 } |
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changeset
|
3299 |
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diff
changeset
|
3300 address top = ((address)bottom()) + used_bytes_slow(Metaspace::NonClassType); |
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parents:
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|
3301 if (last_addr < top) { |
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diff
changeset
|
3302 closure->doit(last_addr, MetaspaceObj::UnknownType, top - last_addr); |
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|
3303 } |
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diff
changeset
|
3304 } |
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diff
changeset
|
3305 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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diff
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|
3306 void Metaspace::purge(MetadataType mdtype) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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12302
diff
changeset
|
3307 get_space_list(mdtype)->purge(get_chunk_manager(mdtype)); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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|
3308 } |
b960c9df4f11
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diff
changeset
|
3309 |
10175 | 3310 void Metaspace::purge() { |
3311 MutexLockerEx cl(SpaceManager::expand_lock(), | |
3312 Mutex::_no_safepoint_check_flag); | |
12303
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8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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diff
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|
3313 purge(NonClassType); |
12056
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hseigel
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11966
diff
changeset
|
3314 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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|
3315 purge(ClassType); |
12056
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diff
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|
3316 } |
10175 | 3317 } |
3318 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
3319 void Metaspace::print_on(outputStream* out) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3320 // Print both class virtual space counts and metaspace. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3321 if (Verbose) { |
12056
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
3322 vsm()->print_on(out); |
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diff
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|
3323 if (using_class_space()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3324 class_vsm()->print_on(out); |
12056
740e263c80c6
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11966
diff
changeset
|
3325 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3326 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3327 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3328 |
7176
59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
6969
diff
changeset
|
3329 bool Metaspace::contains(const void * ptr) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3330 if (MetaspaceShared::is_in_shared_space(ptr)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3331 return true; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3332 } |
7176
59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
6969
diff
changeset
|
3333 // This is checked while unlocked. As long as the virtualspaces are added |
59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
6969
diff
changeset
|
3334 // at the end, the pointer will be in one of them. The virtual spaces |
59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
6969
diff
changeset
|
3335 // aren't deleted presently. When they are, some sort of locking might |
59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
6969
diff
changeset
|
3336 // be needed. Note, locking this can cause inversion problems with the |
59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
coleenp
parents:
6969
diff
changeset
|
3337 // caller in MetaspaceObj::is_metadata() function. |
10175 | 3338 return space_list()->contains(ptr) || |
12056
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
3339 (using_class_space() && class_space_list()->contains(ptr)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3340 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3341 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3342 void Metaspace::verify() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3343 vsm()->verify(); |
12056
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
3344 if (using_class_space()) { |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
3345 class_vsm()->verify(); |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
3346 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3347 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3348 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3349 void Metaspace::dump(outputStream* const out) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3350 out->print_cr("\nVirtual space manager: " INTPTR_FORMAT, vsm()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3351 vsm()->dump(out); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3352 if (using_class_space()) { |
740e263c80c6
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hseigel
parents:
11966
diff
changeset
|
3353 out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm()); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3354 class_vsm()->dump(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3355 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3356 } |
12236
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3357 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
3358 /////////////// Unit tests /////////////// |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
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diff
changeset
|
3359 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3360 #ifndef PRODUCT |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
3361 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3362 class TestMetaspaceAuxTest : AllStatic { |
12236
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3363 public: |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3364 static void test_reserved() { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3365 size_t reserved = MetaspaceAux::reserved_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
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12235
diff
changeset
|
3366 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3367 assert(reserved > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3368 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3369 size_t committed = MetaspaceAux::committed_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3370 assert(committed <= reserved, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3371 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3372 size_t reserved_metadata = MetaspaceAux::reserved_bytes(Metaspace::NonClassType); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
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12235
diff
changeset
|
3373 assert(reserved_metadata > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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12235
diff
changeset
|
3374 assert(reserved_metadata <= reserved, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3375 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3376 if (UseCompressedClassPointers) { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3377 size_t reserved_class = MetaspaceAux::reserved_bytes(Metaspace::ClassType); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3378 assert(reserved_class > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3379 assert(reserved_class < reserved, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3380 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3381 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3382 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3383 static void test_committed() { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3384 size_t committed = MetaspaceAux::committed_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3385 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3386 assert(committed > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3387 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3388 size_t reserved = MetaspaceAux::reserved_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
12235
diff
changeset
|
3389 assert(committed <= reserved, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3390 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3391 size_t committed_metadata = MetaspaceAux::committed_bytes(Metaspace::NonClassType); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3392 assert(committed_metadata > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3393 assert(committed_metadata <= committed, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3394 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3395 if (UseCompressedClassPointers) { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3396 size_t committed_class = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3397 assert(committed_class > 0, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3398 assert(committed_class < committed, "assert"); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3399 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
3400 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
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12235
diff
changeset
|
3401 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3402 static void test_virtual_space_list_large_chunk() { |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3403 VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity()); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3404 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3405 // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3406 // vm_allocation_granularity aligned on Windows. |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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3407 size_t large_size = (size_t)(2*256*K + (os::vm_page_size()/BytesPerWord)); |
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3408 large_size += (os::vm_page_size()/BytesPerWord); |
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3409 vs_list->get_new_chunk(large_size, large_size, 0); |
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3410 } |
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3411 |
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3412 static void test() { |
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3413 test_reserved(); |
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3414 test_committed(); |
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3415 test_virtual_space_list_large_chunk(); |
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3416 } |
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3417 }; |
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3418 |
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3419 void TestMetaspaceAux_test() { |
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3420 TestMetaspaceAuxTest::test(); |
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3421 } |
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3422 |
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3423 #endif |