Mercurial > hg > truffle
annotate src/share/vm/memory/metaspace.cpp @ 17381:40dce17629ac
correct IfNode probabilities in If-Deopt situations
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Wed, 08 Oct 2014 10:49:53 +0200 |
parents | 4ca6dc0799b6 |
children | 52b4284cb496 |
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" |
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32 #include "memory/gcLocker.hpp" |
6885 | 33 #include "memory/metachunk.hpp" |
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34 #include "memory/metaspace.hpp" |
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35 #include "memory/metaspaceShared.hpp" |
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36 #include "memory/resourceArea.hpp" |
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37 #include "memory/universe.hpp" |
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38 #include "runtime/atomic.inline.hpp" |
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39 #include "runtime/globals.hpp" |
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40 #include "runtime/init.hpp" |
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41 #include "runtime/java.hpp" |
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42 #include "runtime/mutex.hpp" |
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43 #include "runtime/orderAccess.hpp" |
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44 #include "services/memTracker.hpp" |
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45 #include "services/memoryService.hpp" |
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46 #include "utilities/copy.hpp" |
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47 #include "utilities/debug.hpp" |
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48 |
14909 | 49 typedef BinaryTreeDictionary<Metablock, FreeList> BlockTreeDictionary; |
50 typedef BinaryTreeDictionary<Metachunk, FreeList> ChunkTreeDictionary; | |
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52 // Set this constant to enable slow integrity checking of the free chunk lists | |
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53 const bool metaspace_slow_verify = false; |
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54 |
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55 size_t const allocation_from_dictionary_limit = 4 * K; |
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56 |
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57 MetaWord* last_allocated = 0; |
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58 |
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59 size_t Metaspace::_compressed_class_space_size; |
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60 |
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61 // Used in declarations in SpaceManager and ChunkManager |
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62 enum ChunkIndex { |
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63 ZeroIndex = 0, |
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64 SpecializedIndex = ZeroIndex, |
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65 SmallIndex = SpecializedIndex + 1, |
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66 MediumIndex = SmallIndex + 1, |
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67 HumongousIndex = MediumIndex + 1, |
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68 NumberOfFreeLists = 3, |
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69 NumberOfInUseLists = 4 |
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70 }; |
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71 |
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72 enum ChunkSizes { // in words. |
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73 ClassSpecializedChunk = 128, |
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74 SpecializedChunk = 128, |
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75 ClassSmallChunk = 256, |
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76 SmallChunk = 512, |
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77 ClassMediumChunk = 4 * K, |
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78 MediumChunk = 8 * K |
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79 }; |
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80 |
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81 static ChunkIndex next_chunk_index(ChunkIndex i) { |
6885 | 82 assert(i < NumberOfInUseLists, "Out of bound"); |
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83 return (ChunkIndex) (i+1); |
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84 } |
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85 |
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86 volatile intptr_t MetaspaceGC::_capacity_until_GC = 0; |
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87 uint MetaspaceGC::_shrink_factor = 0; |
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88 bool MetaspaceGC::_should_concurrent_collect = false; |
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89 |
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90 typedef class FreeList<Metachunk> ChunkList; |
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91 |
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92 // Manages the global free lists of chunks. |
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93 class ChunkManager : public CHeapObj<mtInternal> { |
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94 friend class TestVirtualSpaceNodeTest; |
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95 |
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96 // Free list of chunks of different sizes. |
10175 | 97 // SpecializedChunk |
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98 // SmallChunk |
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99 // MediumChunk |
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100 // HumongousChunk |
6885 | 101 ChunkList _free_chunks[NumberOfFreeLists]; |
102 | |
103 // HumongousChunk | |
104 ChunkTreeDictionary _humongous_dictionary; | |
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105 |
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106 // ChunkManager in all lists of this type |
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107 size_t _free_chunks_total; |
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108 size_t _free_chunks_count; |
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109 |
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110 void dec_free_chunks_total(size_t v) { |
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111 assert(_free_chunks_count > 0 && |
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112 _free_chunks_total > 0, |
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113 "About to go negative"); |
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114 Atomic::add_ptr(-1, &_free_chunks_count); |
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115 jlong minus_v = (jlong) - (jlong) v; |
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116 Atomic::add_ptr(minus_v, &_free_chunks_total); |
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117 } |
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118 |
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119 // Debug support |
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120 |
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121 size_t sum_free_chunks(); |
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122 size_t sum_free_chunks_count(); |
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123 |
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124 void locked_verify_free_chunks_total(); |
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125 void slow_locked_verify_free_chunks_total() { |
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126 if (metaspace_slow_verify) { |
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127 locked_verify_free_chunks_total(); |
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128 } |
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129 } |
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130 void locked_verify_free_chunks_count(); |
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131 void slow_locked_verify_free_chunks_count() { |
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132 if (metaspace_slow_verify) { |
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133 locked_verify_free_chunks_count(); |
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134 } |
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135 } |
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136 void verify_free_chunks_count(); |
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137 |
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138 public: |
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139 |
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140 ChunkManager(size_t specialized_size, size_t small_size, size_t medium_size) |
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141 : _free_chunks_total(0), _free_chunks_count(0) { |
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142 _free_chunks[SpecializedIndex].set_size(specialized_size); |
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143 _free_chunks[SmallIndex].set_size(small_size); |
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144 _free_chunks[MediumIndex].set_size(medium_size); |
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145 } |
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146 |
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147 // add or delete (return) a chunk to the global freelist. |
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148 Metachunk* chunk_freelist_allocate(size_t word_size); |
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149 |
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150 // Map a size to a list index assuming that there are lists |
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151 // for special, small, medium, and humongous chunks. |
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152 static ChunkIndex list_index(size_t size); |
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153 |
10175 | 154 // Remove the chunk from its freelist. It is |
155 // expected to be on one of the _free_chunks[] lists. | |
156 void remove_chunk(Metachunk* chunk); | |
157 | |
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158 // Add the simple linked list of chunks to the freelist of chunks |
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159 // of type index. |
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160 void return_chunks(ChunkIndex index, Metachunk* chunks); |
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161 |
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162 // Total of the space in the free chunks list |
12235 | 163 size_t free_chunks_total_words(); |
164 size_t free_chunks_total_bytes(); | |
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165 |
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166 // Number of chunks in the free chunks list |
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167 size_t free_chunks_count(); |
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168 |
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169 void inc_free_chunks_total(size_t v, size_t count = 1) { |
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170 Atomic::add_ptr(count, &_free_chunks_count); |
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171 Atomic::add_ptr(v, &_free_chunks_total); |
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172 } |
6885 | 173 ChunkTreeDictionary* humongous_dictionary() { |
174 return &_humongous_dictionary; | |
175 } | |
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176 |
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177 ChunkList* free_chunks(ChunkIndex index); |
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178 |
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179 // Returns the list for the given chunk word size. |
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180 ChunkList* find_free_chunks_list(size_t word_size); |
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181 |
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182 // Remove from a list by size. Selects list based on size of chunk. |
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183 Metachunk* free_chunks_get(size_t chunk_word_size); |
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184 |
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185 // Debug support |
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186 void verify(); |
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187 void slow_verify() { |
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188 if (metaspace_slow_verify) { |
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189 verify(); |
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190 } |
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191 } |
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192 void locked_verify(); |
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193 void slow_locked_verify() { |
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194 if (metaspace_slow_verify) { |
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195 locked_verify(); |
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196 } |
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197 } |
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198 void verify_free_chunks_total(); |
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199 |
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200 void locked_print_free_chunks(outputStream* st); |
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201 void locked_print_sum_free_chunks(outputStream* st); |
6885 | 202 |
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203 void print_on(outputStream* st) const; |
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204 }; |
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205 |
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206 // Used to manage the free list of Metablocks (a block corresponds |
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207 // to the allocation of a quantum of metadata). |
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208 class BlockFreelist VALUE_OBJ_CLASS_SPEC { |
6885 | 209 BlockTreeDictionary* _dictionary; |
210 | |
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211 // Only allocate and split from freelist if the size of the allocation |
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212 // is at least 1/4th the size of the available block. |
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213 const static int WasteMultiplier = 4; |
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214 |
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215 // Accessors |
6885 | 216 BlockTreeDictionary* dictionary() const { return _dictionary; } |
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217 |
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218 public: |
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219 BlockFreelist(); |
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220 ~BlockFreelist(); |
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221 |
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222 // Get and return a block to the free list |
6885 | 223 MetaWord* get_block(size_t word_size); |
224 void return_block(MetaWord* p, size_t word_size); | |
225 | |
226 size_t total_size() { | |
227 if (dictionary() == NULL) { | |
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228 return 0; |
6885 | 229 } else { |
230 return dictionary()->total_size(); | |
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231 } |
6885 | 232 } |
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233 |
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234 void print_on(outputStream* st) const; |
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235 }; |
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236 |
12902 | 237 // A VirtualSpaceList node. |
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238 class VirtualSpaceNode : public CHeapObj<mtClass> { |
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239 friend class VirtualSpaceList; |
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240 |
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241 // Link to next VirtualSpaceNode |
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242 VirtualSpaceNode* _next; |
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243 |
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244 // total in the VirtualSpace |
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245 MemRegion _reserved; |
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246 ReservedSpace _rs; |
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247 VirtualSpace _virtual_space; |
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248 MetaWord* _top; |
10175 | 249 // count of chunks contained in this VirtualSpace |
250 uintx _container_count; | |
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251 |
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252 // Convenience functions to access the _virtual_space |
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253 char* low() const { return virtual_space()->low(); } |
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254 char* high() const { return virtual_space()->high(); } |
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255 |
10175 | 256 // The first Metachunk will be allocated at the bottom of the |
257 // VirtualSpace | |
258 Metachunk* first_chunk() { return (Metachunk*) bottom(); } | |
259 | |
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260 // Committed but unused space in the virtual space |
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261 size_t free_words_in_vs() const; |
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262 public: |
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263 |
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264 VirtualSpaceNode(size_t byte_size); |
10175 | 265 VirtualSpaceNode(ReservedSpace rs) : _top(NULL), _next(NULL), _rs(rs), _container_count(0) {} |
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266 ~VirtualSpaceNode(); |
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267 |
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268 // Convenience functions for logical bottom and end |
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269 MetaWord* bottom() const { return (MetaWord*) _virtual_space.low(); } |
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270 MetaWord* end() const { return (MetaWord*) _virtual_space.high(); } |
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271 |
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272 size_t reserved_words() const { return _virtual_space.reserved_size() / BytesPerWord; } |
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273 size_t committed_words() const { return _virtual_space.actual_committed_size() / BytesPerWord; } |
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274 |
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275 bool is_pre_committed() const { return _virtual_space.special(); } |
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276 |
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277 // address of next available space in _virtual_space; |
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278 // Accessors |
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279 VirtualSpaceNode* next() { return _next; } |
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280 void set_next(VirtualSpaceNode* v) { _next = v; } |
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281 |
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282 void set_reserved(MemRegion const v) { _reserved = v; } |
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283 void set_top(MetaWord* v) { _top = v; } |
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284 |
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285 // Accessors |
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286 MemRegion* reserved() { return &_reserved; } |
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287 VirtualSpace* virtual_space() const { return (VirtualSpace*) &_virtual_space; } |
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288 |
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289 // Returns true if "word_size" is available in the VirtualSpace |
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290 bool is_available(size_t word_size) { return word_size <= pointer_delta(end(), _top, sizeof(MetaWord)); } |
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291 |
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292 MetaWord* top() const { return _top; } |
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293 void inc_top(size_t word_size) { _top += word_size; } |
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294 |
10175 | 295 uintx container_count() { return _container_count; } |
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296 void inc_container_count(); |
10175 | 297 void dec_container_count(); |
298 #ifdef ASSERT | |
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299 uint container_count_slow(); |
10175 | 300 void verify_container_count(); |
301 #endif | |
302 | |
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303 // used and capacity in this single entry in the list |
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304 size_t used_words_in_vs() const; |
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305 size_t capacity_words_in_vs() const; |
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306 |
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307 bool initialize(); |
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308 |
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309 // get space from the virtual space |
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310 Metachunk* take_from_committed(size_t chunk_word_size); |
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311 |
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312 // Allocate a chunk from the virtual space and return it. |
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313 Metachunk* get_chunk_vs(size_t chunk_word_size); |
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314 |
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315 // Expands/shrinks the committed space in a virtual space. Delegates |
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316 // to Virtualspace |
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317 bool expand_by(size_t min_words, size_t preferred_words); |
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318 |
10175 | 319 // In preparation for deleting this node, remove all the chunks |
320 // in the node from any freelist. | |
321 void purge(ChunkManager* chunk_manager); | |
322 | |
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323 // If an allocation doesn't fit in the current node a new node is created. |
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324 // Allocate chunks out of the remaining committed space in this node |
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325 // to avoid wasting that memory. |
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326 // This always adds up because all the chunk sizes are multiples of |
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327 // the smallest chunk size. |
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328 void retire(ChunkManager* chunk_manager); |
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329 |
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330 #ifdef ASSERT |
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331 // Debug support |
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332 void mangle(); |
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333 #endif |
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334 |
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335 void print_on(outputStream* st) const; |
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336 }; |
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337 |
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338 #define assert_is_ptr_aligned(ptr, alignment) \ |
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339 assert(is_ptr_aligned(ptr, alignment), \ |
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340 err_msg(PTR_FORMAT " is not aligned to " \ |
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341 SIZE_FORMAT, ptr, alignment)) |
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342 |
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343 #define assert_is_size_aligned(size, alignment) \ |
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344 assert(is_size_aligned(size, alignment), \ |
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345 err_msg(SIZE_FORMAT " is not aligned to " \ |
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346 SIZE_FORMAT, size, alignment)) |
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347 |
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348 |
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349 // Decide if large pages should be committed when the memory is reserved. |
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350 static bool should_commit_large_pages_when_reserving(size_t bytes) { |
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351 if (UseLargePages && UseLargePagesInMetaspace && !os::can_commit_large_page_memory()) { |
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352 size_t words = bytes / BytesPerWord; |
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353 bool is_class = false; // We never reserve large pages for the class space. |
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354 if (MetaspaceGC::can_expand(words, is_class) && |
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355 MetaspaceGC::allowed_expansion() >= words) { |
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356 return true; |
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357 } |
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358 } |
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359 |
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360 return false; |
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361 } |
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362 |
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363 // byte_size is the size of the associated virtualspace. |
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364 VirtualSpaceNode::VirtualSpaceNode(size_t bytes) : _top(NULL), _next(NULL), _rs(), _container_count(0) { |
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365 assert_is_size_aligned(bytes, Metaspace::reserve_alignment()); |
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366 |
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367 // This allocates memory with mmap. For DumpSharedspaces, try to reserve |
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368 // configurable address, generally at the top of the Java heap so other |
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369 // memory addresses don't conflict. |
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370 if (DumpSharedSpaces) { |
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371 bool large_pages = false; // No large pages when dumping the CDS archive. |
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372 char* shared_base = (char*)align_ptr_up((char*)SharedBaseAddress, Metaspace::reserve_alignment()); |
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373 |
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374 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages, shared_base, 0); |
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375 if (_rs.is_reserved()) { |
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376 assert(shared_base == 0 || _rs.base() == shared_base, "should match"); |
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377 } else { |
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378 // Get a mmap region anywhere if the SharedBaseAddress fails. |
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379 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages); |
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380 } |
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381 MetaspaceShared::set_shared_rs(&_rs); |
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382 } else { |
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383 bool large_pages = should_commit_large_pages_when_reserving(bytes); |
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384 |
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385 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages); |
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386 } |
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387 |
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388 if (_rs.is_reserved()) { |
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389 assert(_rs.base() != NULL, "Catch if we get a NULL address"); |
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390 assert(_rs.size() != 0, "Catch if we get a 0 size"); |
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391 assert_is_ptr_aligned(_rs.base(), Metaspace::reserve_alignment()); |
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392 assert_is_size_aligned(_rs.size(), Metaspace::reserve_alignment()); |
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393 |
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394 MemTracker::record_virtual_memory_type((address)_rs.base(), mtClass); |
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395 } |
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396 } |
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397 |
10175 | 398 void VirtualSpaceNode::purge(ChunkManager* chunk_manager) { |
399 Metachunk* chunk = first_chunk(); | |
400 Metachunk* invalid_chunk = (Metachunk*) top(); | |
401 while (chunk < invalid_chunk ) { | |
12902 | 402 assert(chunk->is_tagged_free(), "Should be tagged free"); |
403 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
404 chunk_manager->remove_chunk(chunk); | |
405 assert(chunk->next() == NULL && | |
406 chunk->prev() == NULL, | |
407 "Was not removed from its list"); | |
408 chunk = (Metachunk*) next; | |
10175 | 409 } |
410 } | |
411 | |
412 #ifdef ASSERT | |
413 uint VirtualSpaceNode::container_count_slow() { | |
414 uint count = 0; | |
415 Metachunk* chunk = first_chunk(); | |
416 Metachunk* invalid_chunk = (Metachunk*) top(); | |
417 while (chunk < invalid_chunk ) { | |
418 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
419 // Don't count the chunks on the free lists. Those are | |
420 // still part of the VirtualSpaceNode but not currently | |
421 // counted. | |
12902 | 422 if (!chunk->is_tagged_free()) { |
10175 | 423 count++; |
424 } | |
425 chunk = (Metachunk*) next; | |
426 } | |
427 return count; | |
428 } | |
429 #endif | |
430 | |
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431 // List of VirtualSpaces for metadata allocation. |
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432 class VirtualSpaceList : public CHeapObj<mtClass> { |
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433 friend class VirtualSpaceNode; |
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434 |
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435 enum VirtualSpaceSizes { |
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436 VirtualSpaceSize = 256 * K |
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437 }; |
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438 |
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439 // Head of the list |
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440 VirtualSpaceNode* _virtual_space_list; |
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441 // virtual space currently being used for allocations |
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442 VirtualSpaceNode* _current_virtual_space; |
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443 |
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444 // Is this VirtualSpaceList used for the compressed class space |
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445 bool _is_class; |
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446 |
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447 // Sum of reserved and committed memory in the virtual spaces |
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448 size_t _reserved_words; |
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449 size_t _committed_words; |
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450 |
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451 // Number of virtual spaces |
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452 size_t _virtual_space_count; |
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453 |
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454 ~VirtualSpaceList(); |
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455 |
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456 VirtualSpaceNode* virtual_space_list() const { return _virtual_space_list; } |
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457 |
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458 void set_virtual_space_list(VirtualSpaceNode* v) { |
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459 _virtual_space_list = v; |
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460 } |
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461 void set_current_virtual_space(VirtualSpaceNode* v) { |
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462 _current_virtual_space = v; |
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463 } |
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464 |
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465 void link_vs(VirtualSpaceNode* new_entry); |
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466 |
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467 // Get another virtual space and add it to the list. This |
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468 // is typically prompted by a failed attempt to allocate a chunk |
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469 // and is typically followed by the allocation of a chunk. |
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470 bool create_new_virtual_space(size_t vs_word_size); |
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471 |
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472 // Chunk up the unused committed space in the current |
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473 // virtual space and add the chunks to the free list. |
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474 void retire_current_virtual_space(); |
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475 |
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476 public: |
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477 VirtualSpaceList(size_t word_size); |
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478 VirtualSpaceList(ReservedSpace rs); |
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479 |
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480 size_t free_bytes(); |
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481 |
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482 Metachunk* get_new_chunk(size_t word_size, |
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483 size_t grow_chunks_by_words, |
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484 size_t medium_chunk_bunch); |
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485 |
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486 bool expand_node_by(VirtualSpaceNode* node, |
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487 size_t min_words, |
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488 size_t preferred_words); |
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489 |
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490 bool expand_by(size_t min_words, |
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491 size_t preferred_words); |
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492 |
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493 VirtualSpaceNode* current_virtual_space() { |
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494 return _current_virtual_space; |
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495 } |
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496 |
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497 bool is_class() const { return _is_class; } |
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498 |
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499 bool initialization_succeeded() { return _virtual_space_list != NULL; } |
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500 |
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501 size_t reserved_words() { return _reserved_words; } |
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502 size_t reserved_bytes() { return reserved_words() * BytesPerWord; } |
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503 size_t committed_words() { return _committed_words; } |
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504 size_t committed_bytes() { return committed_words() * BytesPerWord; } |
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505 |
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506 void inc_reserved_words(size_t v); |
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507 void dec_reserved_words(size_t v); |
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508 void inc_committed_words(size_t v); |
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509 void dec_committed_words(size_t v); |
10175 | 510 void inc_virtual_space_count(); |
511 void dec_virtual_space_count(); | |
512 | |
513 // Unlink empty VirtualSpaceNodes and free it. | |
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514 void purge(ChunkManager* chunk_manager); |
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515 |
14909 | 516 bool contains(const void *ptr); |
517 | |
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518 void print_on(outputStream* st) const; |
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519 |
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520 class VirtualSpaceListIterator : public StackObj { |
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521 VirtualSpaceNode* _virtual_spaces; |
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522 public: |
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523 VirtualSpaceListIterator(VirtualSpaceNode* virtual_spaces) : |
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524 _virtual_spaces(virtual_spaces) {} |
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525 |
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526 bool repeat() { |
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527 return _virtual_spaces != NULL; |
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528 } |
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529 |
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530 VirtualSpaceNode* get_next() { |
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531 VirtualSpaceNode* result = _virtual_spaces; |
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532 if (_virtual_spaces != NULL) { |
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533 _virtual_spaces = _virtual_spaces->next(); |
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534 } |
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535 return result; |
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536 } |
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537 }; |
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538 }; |
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539 |
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540 class Metadebug : AllStatic { |
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541 // Debugging support for Metaspaces |
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542 static int _allocation_fail_alot_count; |
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543 |
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544 public: |
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545 |
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546 static void init_allocation_fail_alot_count(); |
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547 #ifdef ASSERT |
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548 static bool test_metadata_failure(); |
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549 #endif |
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550 }; |
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551 |
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552 int Metadebug::_allocation_fail_alot_count = 0; |
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553 |
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554 // SpaceManager - used by Metaspace to handle allocations |
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555 class SpaceManager : public CHeapObj<mtClass> { |
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556 friend class Metaspace; |
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557 friend class Metadebug; |
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558 |
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559 private: |
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560 |
14909 | 561 // protects allocations and contains. |
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562 Mutex* const _lock; |
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563 |
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564 // Type of metadata allocated. |
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565 Metaspace::MetadataType _mdtype; |
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566 |
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567 // List of chunks in use by this SpaceManager. Allocations |
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568 // are done from the current chunk. The list is used for deallocating |
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569 // chunks when the SpaceManager is freed. |
6885 | 570 Metachunk* _chunks_in_use[NumberOfInUseLists]; |
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571 Metachunk* _current_chunk; |
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572 |
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573 // Number of small chunks to allocate to a manager |
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574 // If class space manager, small chunks are unlimited |
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575 static uint const _small_chunk_limit; |
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576 |
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577 // Sum of all space in allocated chunks |
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578 size_t _allocated_blocks_words; |
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579 |
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580 // Sum of all allocated chunks |
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581 size_t _allocated_chunks_words; |
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582 size_t _allocated_chunks_count; |
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583 |
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584 // Free lists of blocks are per SpaceManager since they |
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585 // are assumed to be in chunks in use by the SpaceManager |
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586 // and all chunks in use by a SpaceManager are freed when |
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587 // the class loader using the SpaceManager is collected. |
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588 BlockFreelist _block_freelists; |
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589 |
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590 // protects virtualspace and chunk expansions |
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591 static const char* _expand_lock_name; |
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592 static const int _expand_lock_rank; |
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593 static Mutex* const _expand_lock; |
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594 |
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595 private: |
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596 // Accessors |
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597 Metachunk* chunks_in_use(ChunkIndex index) const { return _chunks_in_use[index]; } |
14909 | 598 void set_chunks_in_use(ChunkIndex index, Metachunk* v) { _chunks_in_use[index] = v; } |
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599 |
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600 BlockFreelist* block_freelists() const { |
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601 return (BlockFreelist*) &_block_freelists; |
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602 } |
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603 |
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604 Metaspace::MetadataType mdtype() { return _mdtype; } |
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605 |
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606 VirtualSpaceList* vs_list() const { return Metaspace::get_space_list(_mdtype); } |
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607 ChunkManager* chunk_manager() const { return Metaspace::get_chunk_manager(_mdtype); } |
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608 |
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609 Metachunk* current_chunk() const { return _current_chunk; } |
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610 void set_current_chunk(Metachunk* v) { |
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611 _current_chunk = v; |
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612 } |
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613 |
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614 Metachunk* find_current_chunk(size_t word_size); |
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615 |
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616 // Add chunk to the list of chunks in use |
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617 void add_chunk(Metachunk* v, bool make_current); |
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618 void retire_current_chunk(); |
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619 |
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620 Mutex* lock() const { return _lock; } |
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621 |
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622 const char* chunk_size_name(ChunkIndex index) const; |
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623 |
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624 protected: |
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625 void initialize(); |
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626 |
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627 public: |
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628 SpaceManager(Metaspace::MetadataType mdtype, |
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629 Mutex* lock); |
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630 ~SpaceManager(); |
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631 |
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632 enum ChunkMultiples { |
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633 MediumChunkMultiple = 4 |
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634 }; |
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635 |
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636 bool is_class() { return _mdtype == Metaspace::ClassType; } |
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637 |
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638 // Accessors |
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639 size_t specialized_chunk_size() { return (size_t) is_class() ? ClassSpecializedChunk : SpecializedChunk; } |
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640 size_t small_chunk_size() { return (size_t) is_class() ? ClassSmallChunk : SmallChunk; } |
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641 size_t medium_chunk_size() { return (size_t) is_class() ? ClassMediumChunk : MediumChunk; } |
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642 size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; } |
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643 |
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644 size_t smallest_chunk_size() { return specialized_chunk_size(); } |
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645 |
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646 size_t allocated_blocks_words() const { return _allocated_blocks_words; } |
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647 size_t allocated_blocks_bytes() const { return _allocated_blocks_words * BytesPerWord; } |
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648 size_t allocated_chunks_words() const { return _allocated_chunks_words; } |
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649 size_t allocated_chunks_count() const { return _allocated_chunks_count; } |
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650 |
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651 bool is_humongous(size_t word_size) { return word_size > medium_chunk_size(); } |
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652 |
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653 static Mutex* expand_lock() { return _expand_lock; } |
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654 |
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655 // Increment the per Metaspace and global running sums for Metachunks |
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656 // by the given size. This is used when a Metachunk to added to |
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657 // the in-use list. |
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658 void inc_size_metrics(size_t words); |
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659 // Increment the per Metaspace and global running sums Metablocks by the given |
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660 // size. This is used when a Metablock is allocated. |
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661 void inc_used_metrics(size_t words); |
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662 // Delete the portion of the running sums for this SpaceManager. That is, |
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663 // the globals running sums for the Metachunks and Metablocks are |
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664 // decremented for all the Metachunks in-use by this SpaceManager. |
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665 void dec_total_from_size_metrics(); |
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666 |
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667 // Set the sizes for the initial chunks. |
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668 void get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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669 size_t* chunk_word_size, |
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670 size_t* class_chunk_word_size); |
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671 |
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672 size_t sum_capacity_in_chunks_in_use() const; |
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673 size_t sum_used_in_chunks_in_use() const; |
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674 size_t sum_free_in_chunks_in_use() const; |
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675 size_t sum_waste_in_chunks_in_use() const; |
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676 size_t sum_waste_in_chunks_in_use(ChunkIndex index ) const; |
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677 |
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678 size_t sum_count_in_chunks_in_use(); |
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679 size_t sum_count_in_chunks_in_use(ChunkIndex i); |
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680 |
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681 Metachunk* get_new_chunk(size_t word_size, size_t grow_chunks_by_words); |
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682 |
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683 // Block allocation and deallocation. |
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684 // Allocates a block from the current chunk |
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685 MetaWord* allocate(size_t word_size); |
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686 |
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687 // Helper for allocations |
6885 | 688 MetaWord* allocate_work(size_t word_size); |
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689 |
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690 // Returns a block to the per manager freelist |
6885 | 691 void deallocate(MetaWord* p, size_t word_size); |
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692 |
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693 // Based on the allocation size and a minimum chunk size, |
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694 // returned chunk size (for expanding space for chunk allocation). |
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695 size_t calc_chunk_size(size_t allocation_word_size); |
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696 |
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697 // Called when an allocation from the current chunk fails. |
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698 // Gets a new chunk (may require getting a new virtual space), |
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699 // and allocates from that chunk. |
6885 | 700 MetaWord* grow_and_allocate(size_t word_size); |
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701 |
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702 // Notify memory usage to MemoryService. |
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703 void track_metaspace_memory_usage(); |
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704 |
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705 // debugging support. |
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706 |
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707 void dump(outputStream* const out) const; |
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708 void print_on(outputStream* st) const; |
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709 void locked_print_chunks_in_use_on(outputStream* st) const; |
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710 |
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711 void verify(); |
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712 void verify_chunk_size(Metachunk* chunk); |
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713 NOT_PRODUCT(void mangle_freed_chunks();) |
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714 #ifdef ASSERT |
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715 void verify_allocated_blocks_words(); |
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716 #endif |
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717 |
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718 size_t get_raw_word_size(size_t word_size) { |
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719 size_t byte_size = word_size * BytesPerWord; |
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720 |
12902 | 721 size_t raw_bytes_size = MAX2(byte_size, sizeof(Metablock)); |
722 raw_bytes_size = align_size_up(raw_bytes_size, Metachunk::object_alignment()); | |
723 | |
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724 size_t raw_word_size = raw_bytes_size / BytesPerWord; |
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725 assert(raw_word_size * BytesPerWord == raw_bytes_size, "Size problem"); |
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726 |
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727 return raw_word_size; |
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728 } |
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729 }; |
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730 |
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731 uint const SpaceManager::_small_chunk_limit = 4; |
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732 |
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733 const char* SpaceManager::_expand_lock_name = |
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734 "SpaceManager chunk allocation lock"; |
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735 const int SpaceManager::_expand_lock_rank = Monitor::leaf - 1; |
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736 Mutex* const SpaceManager::_expand_lock = |
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737 new Mutex(SpaceManager::_expand_lock_rank, |
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738 SpaceManager::_expand_lock_name, |
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739 Mutex::_allow_vm_block_flag); |
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740 |
10175 | 741 void VirtualSpaceNode::inc_container_count() { |
742 assert_lock_strong(SpaceManager::expand_lock()); | |
743 _container_count++; | |
744 assert(_container_count == container_count_slow(), | |
14909 | 745 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT |
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746 " container_count_slow() " SIZE_FORMAT, |
10175 | 747 _container_count, container_count_slow())); |
748 } | |
749 | |
750 void VirtualSpaceNode::dec_container_count() { | |
751 assert_lock_strong(SpaceManager::expand_lock()); | |
752 _container_count--; | |
753 } | |
754 | |
755 #ifdef ASSERT | |
756 void VirtualSpaceNode::verify_container_count() { | |
757 assert(_container_count == container_count_slow(), | |
14909 | 758 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT |
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759 " container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow())); |
10175 | 760 } |
761 #endif | |
762 | |
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763 // BlockFreelist methods |
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764 |
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765 BlockFreelist::BlockFreelist() : _dictionary(NULL) {} |
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766 |
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767 BlockFreelist::~BlockFreelist() { |
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768 if (_dictionary != NULL) { |
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769 if (Verbose && TraceMetadataChunkAllocation) { |
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770 _dictionary->print_free_lists(gclog_or_tty); |
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771 } |
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772 delete _dictionary; |
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773 } |
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774 } |
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775 |
6885 | 776 void BlockFreelist::return_block(MetaWord* p, size_t word_size) { |
12902 | 777 Metablock* free_chunk = ::new (p) Metablock(word_size); |
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778 if (dictionary() == NULL) { |
6885 | 779 _dictionary = new BlockTreeDictionary(); |
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780 } |
6885 | 781 dictionary()->return_chunk(free_chunk); |
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782 } |
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783 |
6885 | 784 MetaWord* BlockFreelist::get_block(size_t word_size) { |
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785 if (dictionary() == NULL) { |
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786 return NULL; |
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787 } |
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788 |
14909 | 789 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
6885 | 790 // Dark matter. Too small for dictionary. |
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791 return NULL; |
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792 } |
6885 | 793 |
794 Metablock* free_block = | |
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795 dictionary()->get_chunk(word_size, FreeBlockDictionary<Metablock>::atLeast); |
6885 | 796 if (free_block == NULL) { |
797 return NULL; | |
798 } | |
799 | |
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800 const size_t block_size = free_block->size(); |
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801 if (block_size > WasteMultiplier * word_size) { |
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802 return_block((MetaWord*)free_block, block_size); |
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803 return NULL; |
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804 } |
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805 |
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806 MetaWord* new_block = (MetaWord*)free_block; |
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807 assert(block_size >= word_size, "Incorrect size of block from freelist"); |
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808 const size_t unused = block_size - word_size; |
14909 | 809 if (unused >= TreeChunk<Metablock, FreeList>::min_size()) { |
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810 return_block(new_block + word_size, unused); |
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811 } |
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812 |
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813 return new_block; |
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814 } |
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815 |
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816 void BlockFreelist::print_on(outputStream* st) const { |
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817 if (dictionary() == NULL) { |
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818 return; |
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819 } |
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820 dictionary()->print_free_lists(st); |
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821 } |
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822 |
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823 // VirtualSpaceNode methods |
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824 |
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825 VirtualSpaceNode::~VirtualSpaceNode() { |
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826 _rs.release(); |
10175 | 827 #ifdef ASSERT |
828 size_t word_size = sizeof(*this) / BytesPerWord; | |
829 Copy::fill_to_words((HeapWord*) this, word_size, 0xf1f1f1f1); | |
830 #endif | |
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831 } |
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832 |
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833 size_t VirtualSpaceNode::used_words_in_vs() const { |
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834 return pointer_delta(top(), bottom(), sizeof(MetaWord)); |
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835 } |
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836 |
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837 // Space committed in the VirtualSpace |
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838 size_t VirtualSpaceNode::capacity_words_in_vs() const { |
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839 return pointer_delta(end(), bottom(), sizeof(MetaWord)); |
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840 } |
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841 |
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842 size_t VirtualSpaceNode::free_words_in_vs() const { |
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843 return pointer_delta(end(), top(), sizeof(MetaWord)); |
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844 } |
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845 |
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846 // Allocates the chunk from the virtual space only. |
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847 // This interface is also used internally for debugging. Not all |
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848 // chunks removed here are necessarily used for allocation. |
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849 Metachunk* VirtualSpaceNode::take_from_committed(size_t chunk_word_size) { |
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850 // Bottom of the new chunk |
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851 MetaWord* chunk_limit = top(); |
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852 assert(chunk_limit != NULL, "Not safe to call this method"); |
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853 |
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854 // The virtual spaces are always expanded by the |
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855 // commit granularity to enforce the following condition. |
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856 // Without this the is_available check will not work correctly. |
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857 assert(_virtual_space.committed_size() == _virtual_space.actual_committed_size(), |
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858 "The committed memory doesn't match the expanded memory."); |
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859 |
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860 if (!is_available(chunk_word_size)) { |
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861 if (TraceMetadataChunkAllocation) { |
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862 gclog_or_tty->print("VirtualSpaceNode::take_from_committed() not available %d words ", chunk_word_size); |
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863 // Dump some information about the virtual space that is nearly full |
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864 print_on(gclog_or_tty); |
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865 } |
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866 return NULL; |
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867 } |
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868 |
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869 // Take the space (bump top on the current virtual space). |
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870 inc_top(chunk_word_size); |
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871 |
10175 | 872 // Initialize the chunk |
873 Metachunk* result = ::new (chunk_limit) Metachunk(chunk_word_size, this); | |
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874 return result; |
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875 } |
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876 |
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877 |
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878 // Expand the virtual space (commit more of the reserved space) |
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879 bool VirtualSpaceNode::expand_by(size_t min_words, size_t preferred_words) { |
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880 size_t min_bytes = min_words * BytesPerWord; |
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881 size_t preferred_bytes = preferred_words * BytesPerWord; |
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882 |
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883 size_t uncommitted = virtual_space()->reserved_size() - virtual_space()->actual_committed_size(); |
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884 |
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885 if (uncommitted < min_bytes) { |
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886 return false; |
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887 } |
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888 |
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889 size_t commit = MIN2(preferred_bytes, uncommitted); |
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890 bool result = virtual_space()->expand_by(commit, false); |
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891 |
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892 assert(result, "Failed to commit memory"); |
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893 |
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894 return result; |
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895 } |
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896 |
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897 Metachunk* VirtualSpaceNode::get_chunk_vs(size_t chunk_word_size) { |
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898 assert_lock_strong(SpaceManager::expand_lock()); |
10175 | 899 Metachunk* result = take_from_committed(chunk_word_size); |
900 if (result != NULL) { | |
901 inc_container_count(); | |
902 } | |
903 return result; | |
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904 } |
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905 |
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906 bool VirtualSpaceNode::initialize() { |
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907 |
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908 if (!_rs.is_reserved()) { |
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909 return false; |
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910 } |
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911 |
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912 // These are necessary restriction to make sure that the virtual space always |
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913 // grows in steps of Metaspace::commit_alignment(). If both base and size are |
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914 // aligned only the middle alignment of the VirtualSpace is used. |
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915 assert_is_ptr_aligned(_rs.base(), Metaspace::commit_alignment()); |
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916 assert_is_size_aligned(_rs.size(), Metaspace::commit_alignment()); |
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917 |
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918 // ReservedSpaces marked as special will have the entire memory |
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919 // pre-committed. Setting a committed size will make sure that |
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920 // committed_size and actual_committed_size agrees. |
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921 size_t pre_committed_size = _rs.special() ? _rs.size() : 0; |
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922 |
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923 bool result = virtual_space()->initialize_with_granularity(_rs, pre_committed_size, |
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924 Metaspace::commit_alignment()); |
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925 if (result) { |
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926 assert(virtual_space()->committed_size() == virtual_space()->actual_committed_size(), |
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927 "Checking that the pre-committed memory was registered by the VirtualSpace"); |
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928 |
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929 set_top((MetaWord*)virtual_space()->low()); |
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930 set_reserved(MemRegion((HeapWord*)_rs.base(), |
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931 (HeapWord*)(_rs.base() + _rs.size()))); |
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932 |
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933 assert(reserved()->start() == (HeapWord*) _rs.base(), |
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934 err_msg("Reserved start was not set properly " PTR_FORMAT |
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935 " != " PTR_FORMAT, reserved()->start(), _rs.base())); |
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936 assert(reserved()->word_size() == _rs.size() / BytesPerWord, |
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937 err_msg("Reserved size was not set properly " SIZE_FORMAT |
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938 " != " SIZE_FORMAT, reserved()->word_size(), |
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939 _rs.size() / BytesPerWord)); |
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940 } |
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941 |
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942 return result; |
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943 } |
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944 |
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945 void VirtualSpaceNode::print_on(outputStream* st) const { |
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946 size_t used = used_words_in_vs(); |
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947 size_t capacity = capacity_words_in_vs(); |
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948 VirtualSpace* vs = virtual_space(); |
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949 st->print_cr(" space @ " PTR_FORMAT " " SIZE_FORMAT "K, %3d%% used " |
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950 "[" PTR_FORMAT ", " PTR_FORMAT ", " |
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951 PTR_FORMAT ", " PTR_FORMAT ")", |
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952 vs, capacity / K, |
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953 capacity == 0 ? 0 : used * 100 / capacity, |
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954 bottom(), top(), end(), |
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955 vs->high_boundary()); |
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956 } |
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957 |
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958 #ifdef ASSERT |
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959 void VirtualSpaceNode::mangle() { |
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960 size_t word_size = capacity_words_in_vs(); |
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961 Copy::fill_to_words((HeapWord*) low(), word_size, 0xf1f1f1f1); |
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962 } |
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963 #endif // ASSERT |
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964 |
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965 // VirtualSpaceList methods |
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966 // Space allocated from the VirtualSpace |
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967 |
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968 VirtualSpaceList::~VirtualSpaceList() { |
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969 VirtualSpaceListIterator iter(virtual_space_list()); |
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970 while (iter.repeat()) { |
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971 VirtualSpaceNode* vsl = iter.get_next(); |
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972 delete vsl; |
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973 } |
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974 } |
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975 |
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976 void VirtualSpaceList::inc_reserved_words(size_t v) { |
10175 | 977 assert_lock_strong(SpaceManager::expand_lock()); |
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978 _reserved_words = _reserved_words + v; |
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979 } |
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980 void VirtualSpaceList::dec_reserved_words(size_t v) { |
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981 assert_lock_strong(SpaceManager::expand_lock()); |
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982 _reserved_words = _reserved_words - v; |
10175 | 983 } |
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984 |
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985 #define assert_committed_below_limit() \ |
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986 assert(MetaspaceAux::committed_bytes() <= MaxMetaspaceSize, \ |
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987 err_msg("Too much committed memory. Committed: " SIZE_FORMAT \ |
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988 " limit (MaxMetaspaceSize): " SIZE_FORMAT, \ |
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989 MetaspaceAux::committed_bytes(), MaxMetaspaceSize)); |
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990 |
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991 void VirtualSpaceList::inc_committed_words(size_t v) { |
10175 | 992 assert_lock_strong(SpaceManager::expand_lock()); |
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993 _committed_words = _committed_words + v; |
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994 |
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995 assert_committed_below_limit(); |
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996 } |
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997 void VirtualSpaceList::dec_committed_words(size_t v) { |
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998 assert_lock_strong(SpaceManager::expand_lock()); |
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999 _committed_words = _committed_words - v; |
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1000 |
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1001 assert_committed_below_limit(); |
10175 | 1002 } |
1003 | |
1004 void VirtualSpaceList::inc_virtual_space_count() { | |
1005 assert_lock_strong(SpaceManager::expand_lock()); | |
1006 _virtual_space_count++; | |
1007 } | |
1008 void VirtualSpaceList::dec_virtual_space_count() { | |
1009 assert_lock_strong(SpaceManager::expand_lock()); | |
1010 _virtual_space_count--; | |
1011 } | |
1012 | |
1013 void ChunkManager::remove_chunk(Metachunk* chunk) { | |
1014 size_t word_size = chunk->word_size(); | |
1015 ChunkIndex index = list_index(word_size); | |
1016 if (index != HumongousIndex) { | |
1017 free_chunks(index)->remove_chunk(chunk); | |
1018 } else { | |
1019 humongous_dictionary()->remove_chunk(chunk); | |
1020 } | |
1021 | |
1022 // Chunk is being removed from the chunks free list. | |
12902 | 1023 dec_free_chunks_total(chunk->word_size()); |
10175 | 1024 } |
1025 | |
1026 // Walk the list of VirtualSpaceNodes and delete | |
1027 // nodes with a 0 container_count. Remove Metachunks in | |
1028 // the node from their respective freelists. | |
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1029 void VirtualSpaceList::purge(ChunkManager* chunk_manager) { |
10175 | 1030 assert_lock_strong(SpaceManager::expand_lock()); |
1031 // Don't use a VirtualSpaceListIterator because this | |
1032 // list is being changed and a straightforward use of an iterator is not safe. | |
1033 VirtualSpaceNode* purged_vsl = NULL; | |
1034 VirtualSpaceNode* prev_vsl = virtual_space_list(); | |
1035 VirtualSpaceNode* next_vsl = prev_vsl; | |
1036 while (next_vsl != NULL) { | |
1037 VirtualSpaceNode* vsl = next_vsl; | |
1038 next_vsl = vsl->next(); | |
1039 // Don't free the current virtual space since it will likely | |
1040 // be needed soon. | |
1041 if (vsl->container_count() == 0 && vsl != current_virtual_space()) { | |
1042 // Unlink it from the list | |
1043 if (prev_vsl == vsl) { | |
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1044 // This is the case of the current node being the first node. |
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1045 assert(vsl == virtual_space_list(), "Expected to be the first node"); |
10175 | 1046 set_virtual_space_list(vsl->next()); |
1047 } else { | |
1048 prev_vsl->set_next(vsl->next()); | |
1049 } | |
1050 | |
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1051 vsl->purge(chunk_manager); |
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1052 dec_reserved_words(vsl->reserved_words()); |
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1053 dec_committed_words(vsl->committed_words()); |
10175 | 1054 dec_virtual_space_count(); |
1055 purged_vsl = vsl; | |
1056 delete vsl; | |
1057 } else { | |
1058 prev_vsl = vsl; | |
1059 } | |
1060 } | |
1061 #ifdef ASSERT | |
1062 if (purged_vsl != NULL) { | |
1063 // List should be stable enough to use an iterator here. | |
1064 VirtualSpaceListIterator iter(virtual_space_list()); | |
1065 while (iter.repeat()) { | |
1066 VirtualSpaceNode* vsl = iter.get_next(); | |
1067 assert(vsl != purged_vsl, "Purge of vsl failed"); | |
1068 } | |
1069 } | |
1070 #endif | |
1071 } | |
1072 | |
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1073 void VirtualSpaceList::retire_current_virtual_space() { |
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1074 assert_lock_strong(SpaceManager::expand_lock()); |
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1075 |
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1076 VirtualSpaceNode* vsn = current_virtual_space(); |
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1077 |
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1078 ChunkManager* cm = is_class() ? Metaspace::chunk_manager_class() : |
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1079 Metaspace::chunk_manager_metadata(); |
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1080 |
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1081 vsn->retire(cm); |
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1082 } |
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1083 |
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1084 void VirtualSpaceNode::retire(ChunkManager* chunk_manager) { |
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1085 for (int i = (int)MediumIndex; i >= (int)ZeroIndex; --i) { |
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1086 ChunkIndex index = (ChunkIndex)i; |
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1087 size_t chunk_size = chunk_manager->free_chunks(index)->size(); |
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1088 |
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1089 while (free_words_in_vs() >= chunk_size) { |
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1090 DEBUG_ONLY(verify_container_count();) |
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1091 Metachunk* chunk = get_chunk_vs(chunk_size); |
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1092 assert(chunk != NULL, "allocation should have been successful"); |
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1093 |
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1094 chunk_manager->return_chunks(index, chunk); |
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1095 chunk_manager->inc_free_chunks_total(chunk_size); |
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1096 DEBUG_ONLY(verify_container_count();) |
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1097 } |
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1098 } |
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1099 assert(free_words_in_vs() == 0, "should be empty now"); |
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1100 } |
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1101 |
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1102 VirtualSpaceList::VirtualSpaceList(size_t word_size) : |
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1103 _is_class(false), |
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1104 _virtual_space_list(NULL), |
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1105 _current_virtual_space(NULL), |
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1106 _reserved_words(0), |
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1107 _committed_words(0), |
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1108 _virtual_space_count(0) { |
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1109 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1110 Mutex::_no_safepoint_check_flag); |
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1111 create_new_virtual_space(word_size); |
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1112 } |
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1113 |
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1114 VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) : |
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1115 _is_class(true), |
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1116 _virtual_space_list(NULL), |
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1117 _current_virtual_space(NULL), |
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1118 _reserved_words(0), |
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1119 _committed_words(0), |
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1120 _virtual_space_count(0) { |
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1121 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1122 Mutex::_no_safepoint_check_flag); |
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1123 VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs); |
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1124 bool succeeded = class_entry->initialize(); |
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1125 if (succeeded) { |
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1126 link_vs(class_entry); |
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1127 } |
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1128 } |
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1129 |
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1130 size_t VirtualSpaceList::free_bytes() { |
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1131 return virtual_space_list()->free_words_in_vs() * BytesPerWord; |
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1132 } |
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1133 |
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1134 // Allocate another meta virtual space and add it to the list. |
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1135 bool VirtualSpaceList::create_new_virtual_space(size_t vs_word_size) { |
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1136 assert_lock_strong(SpaceManager::expand_lock()); |
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1137 |
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1138 if (is_class()) { |
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1139 assert(false, "We currently don't support more than one VirtualSpace for" |
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1140 " the compressed class space. The initialization of the" |
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1141 " CCS uses another code path and should not hit this path."); |
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1142 return false; |
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1143 } |
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1144 |
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1145 if (vs_word_size == 0) { |
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1146 assert(false, "vs_word_size should always be at least _reserve_alignment large."); |
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1147 return false; |
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1148 } |
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1149 |
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1150 // Reserve the space |
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1151 size_t vs_byte_size = vs_word_size * BytesPerWord; |
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1152 assert_is_size_aligned(vs_byte_size, Metaspace::reserve_alignment()); |
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1153 |
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1154 // Allocate the meta virtual space and initialize it. |
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1155 VirtualSpaceNode* new_entry = new VirtualSpaceNode(vs_byte_size); |
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1156 if (!new_entry->initialize()) { |
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1157 delete new_entry; |
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1158 return false; |
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1159 } else { |
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1160 assert(new_entry->reserved_words() == vs_word_size, |
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1161 "Reserved memory size differs from requested memory size"); |
14909 | 1162 // ensure lock-free iteration sees fully initialized node |
1163 OrderAccess::storestore(); | |
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1164 link_vs(new_entry); |
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1165 return true; |
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1166 } |
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1167 } |
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1168 |
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1169 void VirtualSpaceList::link_vs(VirtualSpaceNode* new_entry) { |
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1170 if (virtual_space_list() == NULL) { |
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1171 set_virtual_space_list(new_entry); |
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1172 } else { |
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1173 current_virtual_space()->set_next(new_entry); |
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1174 } |
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1175 set_current_virtual_space(new_entry); |
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1176 inc_reserved_words(new_entry->reserved_words()); |
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1177 inc_committed_words(new_entry->committed_words()); |
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1178 inc_virtual_space_count(); |
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1179 #ifdef ASSERT |
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1180 new_entry->mangle(); |
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1181 #endif |
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1182 if (TraceMetavirtualspaceAllocation && Verbose) { |
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1183 VirtualSpaceNode* vsl = current_virtual_space(); |
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1184 vsl->print_on(gclog_or_tty); |
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1185 } |
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1186 } |
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1187 |
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1188 bool VirtualSpaceList::expand_node_by(VirtualSpaceNode* node, |
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1189 size_t min_words, |
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1190 size_t preferred_words) { |
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1191 size_t before = node->committed_words(); |
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1192 |
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1193 bool result = node->expand_by(min_words, preferred_words); |
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1194 |
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1195 size_t after = node->committed_words(); |
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1196 |
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1197 // after and before can be the same if the memory was pre-committed. |
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1198 assert(after >= before, "Inconsistency"); |
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1199 inc_committed_words(after - before); |
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1200 |
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1201 return result; |
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1202 } |
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1203 |
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1204 bool VirtualSpaceList::expand_by(size_t min_words, size_t preferred_words) { |
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1205 assert_is_size_aligned(min_words, Metaspace::commit_alignment_words()); |
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1206 assert_is_size_aligned(preferred_words, Metaspace::commit_alignment_words()); |
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1207 assert(min_words <= preferred_words, "Invalid arguments"); |
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1208 |
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1209 if (!MetaspaceGC::can_expand(min_words, this->is_class())) { |
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1210 return false; |
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1211 } |
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1212 |
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1213 size_t allowed_expansion_words = MetaspaceGC::allowed_expansion(); |
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1214 if (allowed_expansion_words < min_words) { |
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1215 return false; |
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1216 } |
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1217 |
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1218 size_t max_expansion_words = MIN2(preferred_words, allowed_expansion_words); |
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1219 |
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1220 // Commit more memory from the the current virtual space. |
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1221 bool vs_expanded = expand_node_by(current_virtual_space(), |
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1222 min_words, |
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1223 max_expansion_words); |
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1224 if (vs_expanded) { |
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1225 return true; |
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1226 } |
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1227 retire_current_virtual_space(); |
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1228 |
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1229 // Get another virtual space. |
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1230 size_t grow_vs_words = MAX2((size_t)VirtualSpaceSize, preferred_words); |
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1231 grow_vs_words = align_size_up(grow_vs_words, Metaspace::reserve_alignment_words()); |
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1232 |
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1233 if (create_new_virtual_space(grow_vs_words)) { |
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1234 if (current_virtual_space()->is_pre_committed()) { |
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1235 // The memory was pre-committed, so we are done here. |
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1236 assert(min_words <= current_virtual_space()->committed_words(), |
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1237 "The new VirtualSpace was pre-committed, so it" |
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1238 "should be large enough to fit the alloc request."); |
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1239 return true; |
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1240 } |
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1241 |
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1242 return expand_node_by(current_virtual_space(), |
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1243 min_words, |
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1244 max_expansion_words); |
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1245 } |
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1246 |
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1247 return false; |
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1248 } |
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1249 |
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1250 Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size, |
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1251 size_t grow_chunks_by_words, |
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1252 size_t medium_chunk_bunch) { |
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1253 |
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1254 // Allocate a chunk out of the current virtual space. |
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1255 Metachunk* next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1256 |
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1257 if (next != NULL) { |
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1258 return next; |
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1259 } |
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1260 |
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1261 // The expand amount is currently only determined by the requested sizes |
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1262 // and not how much committed memory is left in the current virtual space. |
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1263 |
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1264 size_t min_word_size = align_size_up(grow_chunks_by_words, Metaspace::commit_alignment_words()); |
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1265 size_t preferred_word_size = align_size_up(medium_chunk_bunch, Metaspace::commit_alignment_words()); |
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1266 if (min_word_size >= preferred_word_size) { |
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1267 // Can happen when humongous chunks are allocated. |
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1268 preferred_word_size = min_word_size; |
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1269 } |
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1270 |
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1271 bool expanded = expand_by(min_word_size, preferred_word_size); |
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1272 if (expanded) { |
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1273 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1274 assert(next != NULL, "The allocation was expected to succeed after the expansion"); |
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1275 } |
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1276 |
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1277 return next; |
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1278 } |
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1279 |
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1280 void VirtualSpaceList::print_on(outputStream* st) const { |
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1281 if (TraceMetadataChunkAllocation && Verbose) { |
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1282 VirtualSpaceListIterator iter(virtual_space_list()); |
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1283 while (iter.repeat()) { |
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1284 VirtualSpaceNode* node = iter.get_next(); |
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1285 node->print_on(st); |
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1286 } |
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1287 } |
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1288 } |
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1289 |
14909 | 1290 bool VirtualSpaceList::contains(const void *ptr) { |
1291 VirtualSpaceNode* list = virtual_space_list(); | |
1292 VirtualSpaceListIterator iter(list); | |
1293 while (iter.repeat()) { | |
1294 VirtualSpaceNode* node = iter.get_next(); | |
1295 if (node->reserved()->contains(ptr)) { | |
1296 return true; | |
1297 } | |
1298 } | |
1299 return false; | |
1300 } | |
1301 | |
1302 | |
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1303 // MetaspaceGC methods |
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1304 |
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1305 // VM_CollectForMetadataAllocation is the vm operation used to GC. |
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1306 // Within the VM operation after the GC the attempt to allocate the metadata |
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1307 // should succeed. If the GC did not free enough space for the metaspace |
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1308 // allocation, the HWM is increased so that another virtualspace will be |
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1309 // allocated for the metadata. With perm gen the increase in the perm |
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1310 // gen had bounds, MinMetaspaceExpansion and MaxMetaspaceExpansion. The |
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1311 // metaspace policy uses those as the small and large steps for the HWM. |
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1312 // |
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1313 // After the GC the compute_new_size() for MetaspaceGC is called to |
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1314 // resize the capacity of the metaspaces. The current implementation |
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1315 // is based on the flags MinMetaspaceFreeRatio and MaxMetaspaceFreeRatio used |
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1316 // to resize the Java heap by some GC's. New flags can be implemented |
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1317 // if really needed. MinMetaspaceFreeRatio is used to calculate how much |
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1318 // free space is desirable in the metaspace capacity to decide how much |
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1319 // to increase the HWM. MaxMetaspaceFreeRatio is used to decide how much |
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1320 // free space is desirable in the metaspace capacity before decreasing |
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1321 // the HWM. |
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1322 |
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1323 // Calculate the amount to increase the high water mark (HWM). |
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1324 // Increase by a minimum amount (MinMetaspaceExpansion) so that |
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1325 // another expansion is not requested too soon. If that is not |
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1326 // enough to satisfy the allocation, increase by MaxMetaspaceExpansion. |
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1327 // If that is still not enough, expand by the size of the allocation |
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1328 // plus some. |
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1329 size_t MetaspaceGC::delta_capacity_until_GC(size_t bytes) { |
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1330 size_t min_delta = MinMetaspaceExpansion; |
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1331 size_t max_delta = MaxMetaspaceExpansion; |
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1332 size_t delta = align_size_up(bytes, Metaspace::commit_alignment()); |
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1333 |
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1334 if (delta <= min_delta) { |
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1335 delta = min_delta; |
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1336 } else if (delta <= max_delta) { |
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1337 // Don't want to hit the high water mark on the next |
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1338 // allocation so make the delta greater than just enough |
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1339 // for this allocation. |
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1340 delta = max_delta; |
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1341 } else { |
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1342 // This allocation is large but the next ones are probably not |
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1343 // so increase by the minimum. |
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1344 delta = delta + min_delta; |
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1345 } |
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1346 |
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1347 assert_is_size_aligned(delta, Metaspace::commit_alignment()); |
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1348 |
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1349 return delta; |
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1350 } |
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1351 |
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1352 size_t MetaspaceGC::capacity_until_GC() { |
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1353 size_t value = (size_t)OrderAccess::load_ptr_acquire(&_capacity_until_GC); |
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1354 assert(value >= MetaspaceSize, "Not initialied properly?"); |
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1355 return value; |
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1356 } |
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1357 |
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1358 size_t MetaspaceGC::inc_capacity_until_GC(size_t v) { |
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1359 assert_is_size_aligned(v, Metaspace::commit_alignment()); |
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1360 |
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1361 return (size_t)Atomic::add_ptr(v, &_capacity_until_GC); |
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1362 } |
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1363 |
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1364 size_t MetaspaceGC::dec_capacity_until_GC(size_t v) { |
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1365 assert_is_size_aligned(v, Metaspace::commit_alignment()); |
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1366 |
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1367 return (size_t)Atomic::add_ptr(-(intptr_t)v, &_capacity_until_GC); |
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1368 } |
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1369 |
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1370 bool MetaspaceGC::can_expand(size_t word_size, bool is_class) { |
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1371 // Check if the compressed class space is full. |
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1372 if (is_class && Metaspace::using_class_space()) { |
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1373 size_t class_committed = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
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1374 if (class_committed + word_size * BytesPerWord > CompressedClassSpaceSize) { |
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1375 return false; |
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1376 } |
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1377 } |
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1378 |
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1379 // Check if the user has imposed a limit on the metaspace memory. |
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1380 size_t committed_bytes = MetaspaceAux::committed_bytes(); |
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1381 if (committed_bytes + word_size * BytesPerWord > MaxMetaspaceSize) { |
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1382 return false; |
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1383 } |
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1384 |
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1385 return true; |
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1386 } |
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1387 |
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1388 size_t MetaspaceGC::allowed_expansion() { |
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1389 size_t committed_bytes = MetaspaceAux::committed_bytes(); |
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1390 |
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1391 size_t left_until_max = MaxMetaspaceSize - committed_bytes; |
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1392 |
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1393 // Always grant expansion if we are initiating the JVM, |
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1394 // or if the GC_locker is preventing GCs. |
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1395 if (!is_init_completed() || GC_locker::is_active_and_needs_gc()) { |
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1396 return left_until_max / BytesPerWord; |
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1397 } |
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1398 |
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1399 size_t capacity_until_gc = capacity_until_GC(); |
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1400 |
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1401 if (capacity_until_gc <= committed_bytes) { |
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1402 return 0; |
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1403 } |
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1404 |
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1405 size_t left_until_GC = capacity_until_gc - committed_bytes; |
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1406 size_t left_to_commit = MIN2(left_until_GC, left_until_max); |
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1407 |
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1408 return left_to_commit / BytesPerWord; |
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1409 } |
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1410 |
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1411 void MetaspaceGC::compute_new_size() { |
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1412 assert(_shrink_factor <= 100, "invalid shrink factor"); |
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1413 uint current_shrink_factor = _shrink_factor; |
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1414 _shrink_factor = 0; |
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1415 |
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1416 const size_t used_after_gc = MetaspaceAux::allocated_capacity_bytes(); |
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1417 const size_t capacity_until_GC = MetaspaceGC::capacity_until_GC(); |
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1418 |
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1419 const double minimum_free_percentage = MinMetaspaceFreeRatio / 100.0; |
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1420 const double maximum_used_percentage = 1.0 - minimum_free_percentage; |
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1421 |
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1422 const double min_tmp = used_after_gc / maximum_used_percentage; |
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1423 size_t minimum_desired_capacity = |
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1424 (size_t)MIN2(min_tmp, double(max_uintx)); |
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1425 // Don't shrink less than the initial generation size |
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1426 minimum_desired_capacity = MAX2(minimum_desired_capacity, |
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1427 MetaspaceSize); |
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1428 |
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1429 if (PrintGCDetails && Verbose) { |
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1430 gclog_or_tty->print_cr("\nMetaspaceGC::compute_new_size: "); |
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1431 gclog_or_tty->print_cr(" " |
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1432 " minimum_free_percentage: %6.2f" |
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1433 " maximum_used_percentage: %6.2f", |
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1434 minimum_free_percentage, |
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1435 maximum_used_percentage); |
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1436 gclog_or_tty->print_cr(" " |
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1437 " used_after_gc : %6.1fKB", |
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1438 used_after_gc / (double) K); |
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1439 } |
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1440 |
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1441 |
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1442 size_t shrink_bytes = 0; |
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1443 if (capacity_until_GC < minimum_desired_capacity) { |
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1444 // If we have less capacity below the metaspace HWM, then |
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1445 // increment the HWM. |
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1446 size_t expand_bytes = minimum_desired_capacity - capacity_until_GC; |
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1447 expand_bytes = align_size_up(expand_bytes, Metaspace::commit_alignment()); |
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1448 // Don't expand unless it's significant |
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1449 if (expand_bytes >= MinMetaspaceExpansion) { |
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1450 MetaspaceGC::inc_capacity_until_GC(expand_bytes); |
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1451 } |
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1452 if (PrintGCDetails && Verbose) { |
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1453 size_t new_capacity_until_GC = capacity_until_GC; |
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1454 gclog_or_tty->print_cr(" expanding:" |
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1455 " minimum_desired_capacity: %6.1fKB" |
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1456 " expand_bytes: %6.1fKB" |
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1457 " MinMetaspaceExpansion: %6.1fKB" |
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1458 " new metaspace HWM: %6.1fKB", |
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1459 minimum_desired_capacity / (double) K, |
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1460 expand_bytes / (double) K, |
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1461 MinMetaspaceExpansion / (double) K, |
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1462 new_capacity_until_GC / (double) K); |
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1463 } |
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1464 return; |
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1465 } |
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1466 |
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1467 // No expansion, now see if we want to shrink |
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1468 // We would never want to shrink more than this |
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1469 size_t max_shrink_bytes = capacity_until_GC - minimum_desired_capacity; |
14909 | 1470 assert(max_shrink_bytes >= 0, err_msg("max_shrink_bytes " SIZE_FORMAT, |
1471 max_shrink_bytes)); | |
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1472 |
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1473 // Should shrinking be considered? |
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1474 if (MaxMetaspaceFreeRatio < 100) { |
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1475 const double maximum_free_percentage = MaxMetaspaceFreeRatio / 100.0; |
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1476 const double minimum_used_percentage = 1.0 - maximum_free_percentage; |
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1477 const double max_tmp = used_after_gc / minimum_used_percentage; |
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1478 size_t maximum_desired_capacity = (size_t)MIN2(max_tmp, double(max_uintx)); |
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1479 maximum_desired_capacity = MAX2(maximum_desired_capacity, |
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1480 MetaspaceSize); |
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1481 if (PrintGCDetails && Verbose) { |
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1482 gclog_or_tty->print_cr(" " |
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1483 " maximum_free_percentage: %6.2f" |
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1484 " minimum_used_percentage: %6.2f", |
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1485 maximum_free_percentage, |
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1486 minimum_used_percentage); |
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1487 gclog_or_tty->print_cr(" " |
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1488 " minimum_desired_capacity: %6.1fKB" |
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1489 " maximum_desired_capacity: %6.1fKB", |
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1490 minimum_desired_capacity / (double) K, |
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1491 maximum_desired_capacity / (double) K); |
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1492 } |
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1493 |
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1494 assert(minimum_desired_capacity <= maximum_desired_capacity, |
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1495 "sanity check"); |
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1496 |
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1497 if (capacity_until_GC > maximum_desired_capacity) { |
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1498 // Capacity too large, compute shrinking size |
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1499 shrink_bytes = capacity_until_GC - maximum_desired_capacity; |
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1500 // We don't want shrink all the way back to initSize if people call |
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1501 // System.gc(), because some programs do that between "phases" and then |
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1502 // we'd just have to grow the heap up again for the next phase. So we |
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1503 // damp the shrinking: 0% on the first call, 10% on the second call, 40% |
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1504 // on the third call, and 100% by the fourth call. But if we recompute |
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1505 // size without shrinking, it goes back to 0%. |
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1506 shrink_bytes = shrink_bytes / 100 * current_shrink_factor; |
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1507 |
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1508 shrink_bytes = align_size_down(shrink_bytes, Metaspace::commit_alignment()); |
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1509 |
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1510 assert(shrink_bytes <= max_shrink_bytes, |
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1511 err_msg("invalid shrink size " SIZE_FORMAT " not <= " SIZE_FORMAT, |
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1512 shrink_bytes, max_shrink_bytes)); |
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1513 if (current_shrink_factor == 0) { |
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1514 _shrink_factor = 10; |
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1515 } else { |
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1516 _shrink_factor = MIN2(current_shrink_factor * 4, (uint) 100); |
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1517 } |
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1518 if (PrintGCDetails && Verbose) { |
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1519 gclog_or_tty->print_cr(" " |
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1520 " shrinking:" |
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1521 " initSize: %.1fK" |
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1522 " maximum_desired_capacity: %.1fK", |
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1523 MetaspaceSize / (double) K, |
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1524 maximum_desired_capacity / (double) K); |
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1525 gclog_or_tty->print_cr(" " |
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1526 " shrink_bytes: %.1fK" |
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1527 " current_shrink_factor: %d" |
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1528 " new shrink factor: %d" |
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1529 " MinMetaspaceExpansion: %.1fK", |
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1530 shrink_bytes / (double) K, |
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1531 current_shrink_factor, |
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1532 _shrink_factor, |
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1533 MinMetaspaceExpansion / (double) K); |
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1534 } |
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1535 } |
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1536 } |
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1537 |
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1538 // Don't shrink unless it's significant |
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1539 if (shrink_bytes >= MinMetaspaceExpansion && |
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1540 ((capacity_until_GC - shrink_bytes) >= MetaspaceSize)) { |
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1541 MetaspaceGC::dec_capacity_until_GC(shrink_bytes); |
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1542 } |
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1543 } |
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1544 |
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1545 // Metadebug methods |
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1546 |
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1547 void Metadebug::init_allocation_fail_alot_count() { |
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1548 if (MetadataAllocationFailALot) { |
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1549 _allocation_fail_alot_count = |
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1550 1+(long)((double)MetadataAllocationFailALotInterval*os::random()/(max_jint+1.0)); |
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1551 } |
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1552 } |
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1553 |
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1554 #ifdef ASSERT |
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1555 bool Metadebug::test_metadata_failure() { |
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1556 if (MetadataAllocationFailALot && |
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1557 Threads::is_vm_complete()) { |
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1558 if (_allocation_fail_alot_count > 0) { |
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1559 _allocation_fail_alot_count--; |
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1560 } else { |
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1561 if (TraceMetadataChunkAllocation && Verbose) { |
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1562 gclog_or_tty->print_cr("Metadata allocation failing for " |
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1563 "MetadataAllocationFailALot"); |
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|
1564 } |
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|
1565 init_allocation_fail_alot_count(); |
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|
1566 return true; |
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|
1567 } |
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|
1568 } |
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|
1569 return false; |
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|
1570 } |
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|
1571 #endif |
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|
1572 |
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1573 // ChunkManager methods |
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1574 |
12235 | 1575 size_t ChunkManager::free_chunks_total_words() { |
6725
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1576 return _free_chunks_total; |
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|
1577 } |
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1578 |
12235 | 1579 size_t ChunkManager::free_chunks_total_bytes() { |
1580 return free_chunks_total_words() * BytesPerWord; | |
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1581 } |
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|
1582 |
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1583 size_t ChunkManager::free_chunks_count() { |
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1584 #ifdef ASSERT |
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1585 if (!UseConcMarkSweepGC && !SpaceManager::expand_lock()->is_locked()) { |
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1586 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1587 Mutex::_no_safepoint_check_flag); |
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1588 // This lock is only needed in debug because the verification |
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1589 // of the _free_chunks_totals walks the list of free chunks |
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1590 slow_locked_verify_free_chunks_count(); |
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1591 } |
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1592 #endif |
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1593 return _free_chunks_count; |
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|
1594 } |
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|
1595 |
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1596 void ChunkManager::locked_verify_free_chunks_total() { |
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1597 assert_lock_strong(SpaceManager::expand_lock()); |
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1598 assert(sum_free_chunks() == _free_chunks_total, |
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1599 err_msg("_free_chunks_total " SIZE_FORMAT " is not the" |
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1600 " same as sum " SIZE_FORMAT, _free_chunks_total, |
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1601 sum_free_chunks())); |
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1602 } |
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1603 |
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1604 void ChunkManager::verify_free_chunks_total() { |
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1605 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1606 Mutex::_no_safepoint_check_flag); |
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1607 locked_verify_free_chunks_total(); |
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|
1608 } |
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|
1609 |
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1610 void ChunkManager::locked_verify_free_chunks_count() { |
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1611 assert_lock_strong(SpaceManager::expand_lock()); |
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1612 assert(sum_free_chunks_count() == _free_chunks_count, |
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1613 err_msg("_free_chunks_count " SIZE_FORMAT " is not the" |
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1614 " same as sum " SIZE_FORMAT, _free_chunks_count, |
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1615 sum_free_chunks_count())); |
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|
1616 } |
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|
1617 |
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|
1618 void ChunkManager::verify_free_chunks_count() { |
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1619 #ifdef ASSERT |
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1620 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1621 Mutex::_no_safepoint_check_flag); |
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1622 locked_verify_free_chunks_count(); |
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|
1623 #endif |
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|
1624 } |
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|
1625 |
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1626 void ChunkManager::verify() { |
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1627 MutexLockerEx cl(SpaceManager::expand_lock(), |
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|
1628 Mutex::_no_safepoint_check_flag); |
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1629 locked_verify(); |
6725
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|
1630 } |
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|
1631 |
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1632 void ChunkManager::locked_verify() { |
6885 | 1633 locked_verify_free_chunks_count(); |
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|
1634 locked_verify_free_chunks_total(); |
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|
1635 } |
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|
1636 |
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|
1637 void ChunkManager::locked_print_free_chunks(outputStream* st) { |
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|
1638 assert_lock_strong(SpaceManager::expand_lock()); |
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1639 st->print_cr("Free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1640 _free_chunks_total, _free_chunks_count); |
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|
1641 } |
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|
1642 |
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1643 void ChunkManager::locked_print_sum_free_chunks(outputStream* st) { |
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|
1644 assert_lock_strong(SpaceManager::expand_lock()); |
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1645 st->print_cr("Sum free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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|
1646 sum_free_chunks(), sum_free_chunks_count()); |
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|
1647 } |
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|
1648 ChunkList* ChunkManager::free_chunks(ChunkIndex index) { |
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|
1649 return &_free_chunks[index]; |
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|
1650 } |
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|
1651 |
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1652 // These methods that sum the free chunk lists are used in printing |
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|
1653 // methods that are used in product builds. |
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|
1654 size_t ChunkManager::sum_free_chunks() { |
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1655 assert_lock_strong(SpaceManager::expand_lock()); |
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1656 size_t result = 0; |
7446
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1657 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
6725
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|
1658 ChunkList* list = free_chunks(i); |
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|
1659 |
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|
1660 if (list == NULL) { |
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|
1661 continue; |
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|
1662 } |
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|
1663 |
10101
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|
1664 result = result + list->count() * list->size(); |
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1665 } |
6885 | 1666 result = result + humongous_dictionary()->total_size(); |
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|
1667 return result; |
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|
1668 } |
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|
1669 |
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|
1670 size_t ChunkManager::sum_free_chunks_count() { |
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|
1671 assert_lock_strong(SpaceManager::expand_lock()); |
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1672 size_t count = 0; |
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1673 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
6725
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1674 ChunkList* list = free_chunks(i); |
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1675 if (list == NULL) { |
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|
1676 continue; |
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|
1677 } |
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1678 count = count + list->count(); |
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1679 } |
6885 | 1680 count = count + humongous_dictionary()->total_free_blocks(); |
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1681 return count; |
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|
1682 } |
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|
1683 |
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|
1684 ChunkList* ChunkManager::find_free_chunks_list(size_t word_size) { |
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1685 ChunkIndex index = list_index(word_size); |
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1686 assert(index < HumongousIndex, "No humongous list"); |
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1687 return free_chunks(index); |
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|
1688 } |
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|
1689 |
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|
1690 Metachunk* ChunkManager::free_chunks_get(size_t word_size) { |
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|
1691 assert_lock_strong(SpaceManager::expand_lock()); |
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|
1692 |
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|
1693 slow_locked_verify(); |
6885 | 1694 |
1695 Metachunk* chunk = NULL; | |
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1696 if (list_index(word_size) != HumongousIndex) { |
6885 | 1697 ChunkList* free_list = find_free_chunks_list(word_size); |
1698 assert(free_list != NULL, "Sanity check"); | |
1699 | |
1700 chunk = free_list->head(); | |
1701 | |
1702 if (chunk == NULL) { | |
1703 return NULL; | |
1704 } | |
1705 | |
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1706 // Remove the chunk as the head of the list. |
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1707 free_list->remove_chunk(chunk); |
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1708 |
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1709 if (TraceMetadataChunkAllocation && Verbose) { |
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1710 gclog_or_tty->print_cr("ChunkManager::free_chunks_get: free_list " |
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1711 PTR_FORMAT " head " PTR_FORMAT " size " SIZE_FORMAT, |
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1712 free_list, chunk, chunk->word_size()); |
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1713 } |
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1714 } else { |
6885 | 1715 chunk = humongous_dictionary()->get_chunk( |
1716 word_size, | |
1717 FreeBlockDictionary<Metachunk>::atLeast); | |
1718 | |
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1719 if (chunk == NULL) { |
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1720 return NULL; |
6885 | 1721 } |
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1722 |
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1723 if (TraceMetadataHumongousAllocation) { |
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1724 size_t waste = chunk->word_size() - word_size; |
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1725 gclog_or_tty->print_cr("Free list allocate humongous chunk size " |
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1726 SIZE_FORMAT " for requested size " SIZE_FORMAT |
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1727 " waste " SIZE_FORMAT, |
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1728 chunk->word_size(), word_size, waste); |
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1729 } |
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1730 } |
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1731 |
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1732 // Chunk is being removed from the chunks free list. |
12902 | 1733 dec_free_chunks_total(chunk->word_size()); |
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1734 |
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1735 // Remove it from the links to this freelist |
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1736 chunk->set_next(NULL); |
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1737 chunk->set_prev(NULL); |
10175 | 1738 #ifdef ASSERT |
1739 // Chunk is no longer on any freelist. Setting to false make container_count_slow() | |
1740 // work. | |
12902 | 1741 chunk->set_is_tagged_free(false); |
10175 | 1742 #endif |
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1743 chunk->container()->inc_container_count(); |
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1744 |
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1745 slow_locked_verify(); |
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1746 return chunk; |
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1747 } |
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1748 |
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1749 Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) { |
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1750 assert_lock_strong(SpaceManager::expand_lock()); |
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1751 slow_locked_verify(); |
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1752 |
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1753 // Take from the beginning of the list |
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1754 Metachunk* chunk = free_chunks_get(word_size); |
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1755 if (chunk == NULL) { |
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1756 return NULL; |
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1757 } |
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1758 |
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1759 assert((word_size <= chunk->word_size()) || |
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1760 list_index(chunk->word_size() == HumongousIndex), |
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1761 "Non-humongous variable sized chunk"); |
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1762 if (TraceMetadataChunkAllocation) { |
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1763 size_t list_count; |
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1764 if (list_index(word_size) < HumongousIndex) { |
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1765 ChunkList* list = find_free_chunks_list(word_size); |
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1766 list_count = list->count(); |
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1767 } else { |
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1768 list_count = humongous_dictionary()->total_count(); |
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1769 } |
12240
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1770 gclog_or_tty->print("ChunkManager::chunk_freelist_allocate: " PTR_FORMAT " chunk " |
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1771 PTR_FORMAT " size " SIZE_FORMAT " count " SIZE_FORMAT " ", |
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1772 this, chunk, chunk->word_size(), list_count); |
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1773 locked_print_free_chunks(gclog_or_tty); |
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1774 } |
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1775 |
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1776 return chunk; |
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1777 } |
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1778 |
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1779 void ChunkManager::print_on(outputStream* out) const { |
6885 | 1780 if (PrintFLSStatistics != 0) { |
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1781 const_cast<ChunkManager *>(this)->humongous_dictionary()->report_statistics(); |
6885 | 1782 } |
1783 } | |
1784 | |
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1785 // SpaceManager methods |
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1786 |
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1787 void SpaceManager::get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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1788 size_t* chunk_word_size, |
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1789 size_t* class_chunk_word_size) { |
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1790 switch (type) { |
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1791 case Metaspace::BootMetaspaceType: |
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1792 *chunk_word_size = Metaspace::first_chunk_word_size(); |
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1793 *class_chunk_word_size = Metaspace::first_class_chunk_word_size(); |
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1794 break; |
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1795 case Metaspace::ROMetaspaceType: |
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1796 *chunk_word_size = SharedReadOnlySize / wordSize; |
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1797 *class_chunk_word_size = ClassSpecializedChunk; |
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1798 break; |
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1799 case Metaspace::ReadWriteMetaspaceType: |
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1800 *chunk_word_size = SharedReadWriteSize / wordSize; |
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1801 *class_chunk_word_size = ClassSpecializedChunk; |
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1802 break; |
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1803 case Metaspace::AnonymousMetaspaceType: |
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1804 case Metaspace::ReflectionMetaspaceType: |
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1805 *chunk_word_size = SpecializedChunk; |
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1806 *class_chunk_word_size = ClassSpecializedChunk; |
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1807 break; |
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1808 default: |
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1809 *chunk_word_size = SmallChunk; |
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1810 *class_chunk_word_size = ClassSmallChunk; |
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1811 break; |
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1812 } |
8007
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1813 assert(*chunk_word_size != 0 && *class_chunk_word_size != 0, |
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1814 err_msg("Initial chunks sizes bad: data " SIZE_FORMAT |
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1815 " class " SIZE_FORMAT, |
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1816 *chunk_word_size, *class_chunk_word_size)); |
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1817 } |
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1818 |
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1819 size_t SpaceManager::sum_free_in_chunks_in_use() const { |
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1820 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1821 size_t free = 0; |
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1822 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1823 Metachunk* chunk = chunks_in_use(i); |
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1824 while (chunk != NULL) { |
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1825 free += chunk->free_word_size(); |
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1826 chunk = chunk->next(); |
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1827 } |
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1828 } |
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1829 return free; |
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1830 } |
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1831 |
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1832 size_t SpaceManager::sum_waste_in_chunks_in_use() const { |
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1833 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1834 size_t result = 0; |
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1835 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1836 result += sum_waste_in_chunks_in_use(i); |
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1837 } |
6885 | 1838 |
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1839 return result; |
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1840 } |
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1841 |
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1842 size_t SpaceManager::sum_waste_in_chunks_in_use(ChunkIndex index) const { |
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1843 size_t result = 0; |
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1844 Metachunk* chunk = chunks_in_use(index); |
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1845 // Count the free space in all the chunk but not the |
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1846 // current chunk from which allocations are still being done. |
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1847 while (chunk != NULL) { |
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1848 if (chunk != current_chunk()) { |
6885 | 1849 result += chunk->free_word_size(); |
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1850 } |
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1851 chunk = chunk->next(); |
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1852 } |
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1853 return result; |
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1854 } |
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1855 |
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1856 size_t SpaceManager::sum_capacity_in_chunks_in_use() const { |
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1857 // For CMS use "allocated_chunks_words()" which does not need the |
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1858 // Metaspace lock. For the other collectors sum over the |
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1859 // lists. Use both methods as a check that "allocated_chunks_words()" |
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1860 // is correct. That is, sum_capacity_in_chunks() is too expensive |
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1861 // to use in the product and allocated_chunks_words() should be used |
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1862 // but allow for checking that allocated_chunks_words() returns the same |
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1863 // value as sum_capacity_in_chunks_in_use() which is the definitive |
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1864 // answer. |
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1865 if (UseConcMarkSweepGC) { |
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1866 return allocated_chunks_words(); |
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1867 } else { |
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1868 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1869 size_t sum = 0; |
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1870 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1871 Metachunk* chunk = chunks_in_use(i); |
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1872 while (chunk != NULL) { |
12902 | 1873 sum += chunk->word_size(); |
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1874 chunk = chunk->next(); |
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1875 } |
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1876 } |
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1877 return sum; |
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1878 } |
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1879 } |
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1880 |
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1881 size_t SpaceManager::sum_count_in_chunks_in_use() { |
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1882 size_t count = 0; |
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1883 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1884 count = count + sum_count_in_chunks_in_use(i); |
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1885 } |
6885 | 1886 |
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1887 return count; |
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1888 } |
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1889 |
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1890 size_t SpaceManager::sum_count_in_chunks_in_use(ChunkIndex i) { |
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1891 size_t count = 0; |
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1892 Metachunk* chunk = chunks_in_use(i); |
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1893 while (chunk != NULL) { |
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1894 count++; |
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1895 chunk = chunk->next(); |
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1896 } |
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1897 return count; |
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1898 } |
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1899 |
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1900 |
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1901 size_t SpaceManager::sum_used_in_chunks_in_use() const { |
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1902 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1903 size_t used = 0; |
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1904 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1905 Metachunk* chunk = chunks_in_use(i); |
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1906 while (chunk != NULL) { |
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1907 used += chunk->used_word_size(); |
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1908 chunk = chunk->next(); |
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1909 } |
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1910 } |
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1911 return used; |
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1912 } |
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1913 |
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1914 void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const { |
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1915 |
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1916 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1917 Metachunk* chunk = chunks_in_use(i); |
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1918 st->print("SpaceManager: %s " PTR_FORMAT, |
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1919 chunk_size_name(i), chunk); |
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1920 if (chunk != NULL) { |
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1921 st->print_cr(" free " SIZE_FORMAT, |
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1922 chunk->free_word_size()); |
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1923 } else { |
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1924 st->print_cr(""); |
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1925 } |
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1926 } |
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1927 |
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1928 chunk_manager()->locked_print_free_chunks(st); |
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1929 chunk_manager()->locked_print_sum_free_chunks(st); |
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1930 } |
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1931 |
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1932 size_t SpaceManager::calc_chunk_size(size_t word_size) { |
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1933 |
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1934 // Decide between a small chunk and a medium chunk. Up to |
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1935 // _small_chunk_limit small chunks can be allocated but |
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1936 // once a medium chunk has been allocated, no more small |
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1937 // chunks will be allocated. |
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1938 size_t chunk_word_size; |
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1939 if (chunks_in_use(MediumIndex) == NULL && |
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1940 sum_count_in_chunks_in_use(SmallIndex) < _small_chunk_limit) { |
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1941 chunk_word_size = (size_t) small_chunk_size(); |
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1942 if (word_size + Metachunk::overhead() > small_chunk_size()) { |
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1943 chunk_word_size = medium_chunk_size(); |
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1944 } |
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1945 } else { |
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1946 chunk_word_size = medium_chunk_size(); |
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1947 } |
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1948 |
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1949 // Might still need a humongous chunk. Enforce |
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1950 // humongous allocations sizes to be aligned up to |
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1951 // the smallest chunk size. |
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1952 size_t if_humongous_sized_chunk = |
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1953 align_size_up(word_size + Metachunk::overhead(), |
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1954 smallest_chunk_size()); |
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1955 chunk_word_size = |
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1956 MAX2((size_t) chunk_word_size, if_humongous_sized_chunk); |
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1957 |
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1958 assert(!SpaceManager::is_humongous(word_size) || |
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1959 chunk_word_size == if_humongous_sized_chunk, |
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1960 err_msg("Size calculation is wrong, word_size " SIZE_FORMAT |
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1961 " chunk_word_size " SIZE_FORMAT, |
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1962 word_size, chunk_word_size)); |
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1963 if (TraceMetadataHumongousAllocation && |
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1964 SpaceManager::is_humongous(word_size)) { |
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1965 gclog_or_tty->print_cr("Metadata humongous allocation:"); |
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1966 gclog_or_tty->print_cr(" word_size " PTR_FORMAT, word_size); |
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1967 gclog_or_tty->print_cr(" chunk_word_size " PTR_FORMAT, |
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1968 chunk_word_size); |
6885 | 1969 gclog_or_tty->print_cr(" chunk overhead " PTR_FORMAT, |
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1970 Metachunk::overhead()); |
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1971 } |
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1972 return chunk_word_size; |
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1973 } |
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1974 |
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1975 void SpaceManager::track_metaspace_memory_usage() { |
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1976 if (is_init_completed()) { |
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1977 if (is_class()) { |
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1978 MemoryService::track_compressed_class_memory_usage(); |
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1979 } |
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1980 MemoryService::track_metaspace_memory_usage(); |
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1981 } |
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1982 } |
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1983 |
6885 | 1984 MetaWord* SpaceManager::grow_and_allocate(size_t word_size) { |
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1985 assert(vs_list()->current_virtual_space() != NULL, |
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1986 "Should have been set"); |
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1987 assert(current_chunk() == NULL || |
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1988 current_chunk()->allocate(word_size) == NULL, |
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1989 "Don't need to expand"); |
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1990 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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1991 |
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1992 if (TraceMetadataChunkAllocation && Verbose) { |
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1993 size_t words_left = 0; |
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1994 size_t words_used = 0; |
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1995 if (current_chunk() != NULL) { |
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1996 words_left = current_chunk()->free_word_size(); |
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1997 words_used = current_chunk()->used_word_size(); |
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1998 } |
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1999 gclog_or_tty->print_cr("SpaceManager::grow_and_allocate for " SIZE_FORMAT |
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2000 " words " SIZE_FORMAT " words used " SIZE_FORMAT |
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2001 " words left", |
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2002 word_size, words_used, words_left); |
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2003 } |
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2004 |
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2005 // Get another chunk out of the virtual space |
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2006 size_t grow_chunks_by_words = calc_chunk_size(word_size); |
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2007 Metachunk* next = get_new_chunk(word_size, grow_chunks_by_words); |
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2008 |
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2009 MetaWord* mem = NULL; |
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2010 |
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2011 // If a chunk was available, add it to the in-use chunk list |
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2012 // and do an allocation from it. |
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2013 if (next != NULL) { |
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2014 // Add to this manager's list of chunks in use. |
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2015 add_chunk(next, false); |
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2016 mem = next->allocate(word_size); |
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2017 } |
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2018 |
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2019 // Track metaspace memory usage statistic. |
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2020 track_metaspace_memory_usage(); |
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2021 |
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2022 return mem; |
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2023 } |
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2024 |
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2025 void SpaceManager::print_on(outputStream* st) const { |
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2026 |
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2027 for (ChunkIndex i = ZeroIndex; |
6885 | 2028 i < NumberOfInUseLists ; |
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2029 i = next_chunk_index(i) ) { |
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2030 st->print_cr(" chunks_in_use " PTR_FORMAT " chunk size " PTR_FORMAT, |
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2031 chunks_in_use(i), |
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2032 chunks_in_use(i) == NULL ? 0 : chunks_in_use(i)->word_size()); |
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2033 } |
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2034 st->print_cr(" waste: Small " SIZE_FORMAT " Medium " SIZE_FORMAT |
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2035 " Humongous " SIZE_FORMAT, |
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2036 sum_waste_in_chunks_in_use(SmallIndex), |
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2037 sum_waste_in_chunks_in_use(MediumIndex), |
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2038 sum_waste_in_chunks_in_use(HumongousIndex)); |
6885 | 2039 // block free lists |
2040 if (block_freelists() != NULL) { | |
2041 st->print_cr("total in block free lists " SIZE_FORMAT, | |
2042 block_freelists()->total_size()); | |
2043 } | |
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2044 } |
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2045 |
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2046 SpaceManager::SpaceManager(Metaspace::MetadataType mdtype, |
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2047 Mutex* lock) : |
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2048 _mdtype(mdtype), |
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2049 _allocated_blocks_words(0), |
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2050 _allocated_chunks_words(0), |
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2051 _allocated_chunks_count(0), |
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2052 _lock(lock) |
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2053 { |
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2054 initialize(); |
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2055 } |
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2056 |
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2057 void SpaceManager::inc_size_metrics(size_t words) { |
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2058 assert_lock_strong(SpaceManager::expand_lock()); |
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2059 // Total of allocated Metachunks and allocated Metachunks count |
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2060 // for each SpaceManager |
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2061 _allocated_chunks_words = _allocated_chunks_words + words; |
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2062 _allocated_chunks_count++; |
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2063 // Global total of capacity in allocated Metachunks |
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2064 MetaspaceAux::inc_capacity(mdtype(), words); |
10183
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2065 // Global total of allocated Metablocks. |
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2066 // used_words_slow() includes the overhead in each |
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2067 // Metachunk so include it in the used when the |
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2068 // Metachunk is first added (so only added once per |
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2069 // Metachunk). |
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2070 MetaspaceAux::inc_used(mdtype(), Metachunk::overhead()); |
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2071 } |
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2072 |
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2073 void SpaceManager::inc_used_metrics(size_t words) { |
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2074 // Add to the per SpaceManager total |
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2075 Atomic::add_ptr(words, &_allocated_blocks_words); |
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2076 // Add to the global total |
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2077 MetaspaceAux::inc_used(mdtype(), words); |
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2078 } |
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2079 |
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2080 void SpaceManager::dec_total_from_size_metrics() { |
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2081 MetaspaceAux::dec_capacity(mdtype(), allocated_chunks_words()); |
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2082 MetaspaceAux::dec_used(mdtype(), allocated_blocks_words()); |
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2083 // Also deduct the overhead per Metachunk |
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2084 MetaspaceAux::dec_used(mdtype(), allocated_chunks_count() * Metachunk::overhead()); |
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2085 } |
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2086 |
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2087 void SpaceManager::initialize() { |
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2088 Metadebug::init_allocation_fail_alot_count(); |
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2089 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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2090 _chunks_in_use[i] = NULL; |
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2091 } |
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2092 _current_chunk = NULL; |
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2093 if (TraceMetadataChunkAllocation && Verbose) { |
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2094 gclog_or_tty->print_cr("SpaceManager(): " PTR_FORMAT, this); |
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2095 } |
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2096 } |
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2097 |
10101
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2098 void ChunkManager::return_chunks(ChunkIndex index, Metachunk* chunks) { |
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2099 if (chunks == NULL) { |
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2100 return; |
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|
2101 } |
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2102 ChunkList* list = free_chunks(index); |
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2103 assert(list->size() == chunks->word_size(), "Mismatch in chunk sizes"); |
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2104 assert_lock_strong(SpaceManager::expand_lock()); |
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2105 Metachunk* cur = chunks; |
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2106 |
10175 | 2107 // This returns chunks one at a time. If a new |
10101
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2108 // class List can be created that is a base class |
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2109 // of FreeList then something like FreeList::prepend() |
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2110 // can be used in place of this loop |
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2111 while (cur != NULL) { |
10175 | 2112 assert(cur->container() != NULL, "Container should have been set"); |
2113 cur->container()->dec_container_count(); | |
10101
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2114 // Capture the next link before it is changed |
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2115 // by the call to return_chunk_at_head(); |
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2116 Metachunk* next = cur->next(); |
12902 | 2117 DEBUG_ONLY(cur->set_is_tagged_free(true);) |
10101
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2118 list->return_chunk_at_head(cur); |
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2119 cur = next; |
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2120 } |
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2121 } |
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2122 |
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2123 SpaceManager::~SpaceManager() { |
8784
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2124 // This call this->_lock which can't be done while holding expand_lock() |
10183
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2125 assert(sum_capacity_in_chunks_in_use() == allocated_chunks_words(), |
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2126 err_msg("sum_capacity_in_chunks_in_use() " SIZE_FORMAT |
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2127 " allocated_chunks_words() " SIZE_FORMAT, |
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2128 sum_capacity_in_chunks_in_use(), allocated_chunks_words())); |
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2129 |
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2130 MutexLockerEx fcl(SpaceManager::expand_lock(), |
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2131 Mutex::_no_safepoint_check_flag); |
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2132 |
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2133 chunk_manager()->slow_locked_verify(); |
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2134 |
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2135 dec_total_from_size_metrics(); |
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2136 |
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2137 if (TraceMetadataChunkAllocation && Verbose) { |
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2138 gclog_or_tty->print_cr("~SpaceManager(): " PTR_FORMAT, this); |
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2139 locked_print_chunks_in_use_on(gclog_or_tty); |
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2140 } |
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2141 |
10175 | 2142 // Do not mangle freed Metachunks. The chunk size inside Metachunks |
2143 // is during the freeing of a VirtualSpaceNodes. | |
7185
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2144 |
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2145 // Have to update before the chunks_in_use lists are emptied |
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2146 // below. |
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2147 chunk_manager()->inc_free_chunks_total(allocated_chunks_words(), |
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2148 sum_count_in_chunks_in_use()); |
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2149 |
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2150 // Add all the chunks in use by this space manager |
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2151 // to the global list of free chunks. |
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2152 |
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2153 // Follow each list of chunks-in-use and add them to the |
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2154 // free lists. Each list is NULL terminated. |
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2155 |
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2156 for (ChunkIndex i = ZeroIndex; i < HumongousIndex; i = next_chunk_index(i)) { |
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2157 if (TraceMetadataChunkAllocation && Verbose) { |
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2158 gclog_or_tty->print_cr("returned %d %s chunks to freelist", |
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2159 sum_count_in_chunks_in_use(i), |
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2160 chunk_size_name(i)); |
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2161 } |
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2162 Metachunk* chunks = chunks_in_use(i); |
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2163 chunk_manager()->return_chunks(i, chunks); |
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2164 set_chunks_in_use(i, NULL); |
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2165 if (TraceMetadataChunkAllocation && Verbose) { |
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2166 gclog_or_tty->print_cr("updated freelist count %d %s", |
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2167 chunk_manager()->free_chunks(i)->count(), |
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2168 chunk_size_name(i)); |
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2169 } |
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2170 assert(i != HumongousIndex, "Humongous chunks are handled explicitly later"); |
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2171 } |
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2172 |
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2173 // The medium chunk case may be optimized by passing the head and |
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2174 // tail of the medium chunk list to add_at_head(). The tail is often |
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2175 // the current chunk but there are probably exceptions. |
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2176 |
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2177 // Humongous chunks |
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2178 if (TraceMetadataChunkAllocation && Verbose) { |
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2179 gclog_or_tty->print_cr("returned %d %s humongous chunks to dictionary", |
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2180 sum_count_in_chunks_in_use(HumongousIndex), |
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2181 chunk_size_name(HumongousIndex)); |
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2182 gclog_or_tty->print("Humongous chunk dictionary: "); |
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2183 } |
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2184 // Humongous chunks are never the current chunk. |
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2185 Metachunk* humongous_chunks = chunks_in_use(HumongousIndex); |
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2186 |
6885 | 2187 while (humongous_chunks != NULL) { |
2188 #ifdef ASSERT | |
12902 | 2189 humongous_chunks->set_is_tagged_free(true); |
6885 | 2190 #endif |
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2191 if (TraceMetadataChunkAllocation && Verbose) { |
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2192 gclog_or_tty->print(PTR_FORMAT " (" SIZE_FORMAT ") ", |
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2193 humongous_chunks, |
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2194 humongous_chunks->word_size()); |
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2195 } |
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2196 assert(humongous_chunks->word_size() == (size_t) |
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2197 align_size_up(humongous_chunks->word_size(), |
12979
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2198 smallest_chunk_size()), |
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2199 err_msg("Humongous chunk size is wrong: word size " SIZE_FORMAT |
8007
d9058e388631
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2200 " granularity %d", |
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2201 humongous_chunks->word_size(), smallest_chunk_size())); |
6885 | 2202 Metachunk* next_humongous_chunks = humongous_chunks->next(); |
10175 | 2203 humongous_chunks->container()->dec_container_count(); |
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2204 chunk_manager()->humongous_dictionary()->return_chunk(humongous_chunks); |
6885 | 2205 humongous_chunks = next_humongous_chunks; |
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2206 } |
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2207 if (TraceMetadataChunkAllocation && Verbose) { |
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2208 gclog_or_tty->print_cr(""); |
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2209 gclog_or_tty->print_cr("updated dictionary count %d %s", |
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2210 chunk_manager()->humongous_dictionary()->total_count(), |
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2211 chunk_size_name(HumongousIndex)); |
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2212 } |
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2213 chunk_manager()->slow_locked_verify(); |
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2214 } |
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2215 |
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2216 const char* SpaceManager::chunk_size_name(ChunkIndex index) const { |
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2217 switch (index) { |
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2218 case SpecializedIndex: |
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2219 return "Specialized"; |
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2220 case SmallIndex: |
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2221 return "Small"; |
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2222 case MediumIndex: |
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|
2223 return "Medium"; |
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2224 case HumongousIndex: |
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2225 return "Humongous"; |
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2226 default: |
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|
2227 return NULL; |
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|
2228 } |
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|
2229 } |
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2230 |
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2231 ChunkIndex ChunkManager::list_index(size_t size) { |
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2232 switch (size) { |
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2233 case SpecializedChunk: |
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2234 assert(SpecializedChunk == ClassSpecializedChunk, |
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2235 "Need branch for ClassSpecializedChunk"); |
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2236 return SpecializedIndex; |
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2237 case SmallChunk: |
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2238 case ClassSmallChunk: |
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2239 return SmallIndex; |
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2240 case MediumChunk: |
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2241 case ClassMediumChunk: |
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2242 return MediumIndex; |
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2243 default: |
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2244 assert(size > MediumChunk || size > ClassMediumChunk, |
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2245 "Not a humongous chunk"); |
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2246 return HumongousIndex; |
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2247 } |
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2248 } |
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2249 |
6885 | 2250 void SpaceManager::deallocate(MetaWord* p, size_t word_size) { |
6725
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2251 assert_lock_strong(_lock); |
11966 | 2252 size_t raw_word_size = get_raw_word_size(word_size); |
14909 | 2253 size_t min_size = TreeChunk<Metablock, FreeList>::min_size(); |
11966 | 2254 assert(raw_word_size >= min_size, |
12056
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2255 err_msg("Should not deallocate dark matter " SIZE_FORMAT "<" SIZE_FORMAT, word_size, min_size)); |
11966 | 2256 block_freelists()->return_block(p, raw_word_size); |
6725
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2257 } |
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2258 |
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2259 // Adds a chunk to the list of chunks in use. |
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2260 void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) { |
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2261 |
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2262 assert(new_chunk != NULL, "Should not be NULL"); |
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2263 assert(new_chunk->next() == NULL, "Should not be on a list"); |
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2264 |
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2265 new_chunk->reset_empty(); |
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2266 |
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2267 // Find the correct list and and set the current |
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2268 // chunk for that list. |
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2269 ChunkIndex index = ChunkManager::list_index(new_chunk->word_size()); |
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2270 |
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2271 if (index != HumongousIndex) { |
12231
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|
2272 retire_current_chunk(); |
6725
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2273 set_current_chunk(new_chunk); |
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2274 new_chunk->set_next(chunks_in_use(index)); |
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2275 set_chunks_in_use(index, new_chunk); |
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2276 } else { |
6725
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2277 // For null class loader data and DumpSharedSpaces, the first chunk isn't |
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2278 // small, so small will be null. Link this first chunk as the current |
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|
2279 // chunk. |
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2280 if (make_current) { |
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2281 // Set as the current chunk but otherwise treat as a humongous chunk. |
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|
2282 set_current_chunk(new_chunk); |
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|
2283 } |
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|
2284 // Link at head. The _current_chunk only points to a humongous chunk for |
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|
2285 // the null class loader metaspace (class and data virtual space managers) |
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2286 // any humongous chunks so will not point to the tail |
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2287 // of the humongous chunks list. |
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|
2288 new_chunk->set_next(chunks_in_use(HumongousIndex)); |
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|
2289 set_chunks_in_use(HumongousIndex, new_chunk); |
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|
2290 |
7447
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|
2291 assert(new_chunk->word_size() > medium_chunk_size(), "List inconsistency"); |
6725
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|
2292 } |
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|
2293 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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10175
diff
changeset
|
2294 // Add to the running sum of capacity |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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10175
diff
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|
2295 inc_size_metrics(new_chunk->word_size()); |
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10175
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|
2296 |
6725
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|
2297 assert(new_chunk->is_empty(), "Not ready for reuse"); |
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2298 if (TraceMetadataChunkAllocation && Verbose) { |
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|
2299 gclog_or_tty->print("SpaceManager::add_chunk: %d) ", |
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|
2300 sum_count_in_chunks_in_use()); |
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|
2301 new_chunk->print_on(gclog_or_tty); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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12302
diff
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|
2302 chunk_manager()->locked_print_free_chunks(gclog_or_tty); |
6725
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|
2303 } |
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|
2304 } |
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|
2305 |
12231
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|
2306 void SpaceManager::retire_current_chunk() { |
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|
2307 if (current_chunk() != NULL) { |
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|
2308 size_t remaining_words = current_chunk()->free_word_size(); |
14909 | 2309 if (remaining_words >= TreeChunk<Metablock, FreeList>::min_size()) { |
12231
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|
2310 block_freelists()->return_block(current_chunk()->allocate(remaining_words), remaining_words); |
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|
2311 inc_used_metrics(remaining_words); |
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|
2312 } |
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|
2313 } |
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|
2314 } |
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|
2315 |
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|
2316 Metachunk* SpaceManager::get_new_chunk(size_t word_size, |
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|
2317 size_t grow_chunks_by_words) { |
12303
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8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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|
2318 // Get a chunk from the chunk freelist |
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|
2319 Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words); |
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|
2320 |
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12302
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|
2321 if (next == NULL) { |
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|
2322 next = vs_list()->get_new_chunk(word_size, |
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|
2323 grow_chunks_by_words, |
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diff
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|
2324 medium_chunk_bunch()); |
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|
2325 } |
7446
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|
2326 |
12239 | 2327 if (TraceMetadataHumongousAllocation && next != NULL && |
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|
2328 SpaceManager::is_humongous(next->word_size())) { |
12239 | 2329 gclog_or_tty->print_cr(" new humongous chunk word size " |
2330 PTR_FORMAT, next->word_size()); | |
7446
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|
2331 } |
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|
2332 |
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|
2333 return next; |
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|
2334 } |
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|
2335 |
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2336 MetaWord* SpaceManager::allocate(size_t word_size) { |
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|
2337 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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|
2338 |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
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parents:
10330
diff
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|
2339 size_t raw_word_size = get_raw_word_size(word_size); |
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|
2340 BlockFreelist* fl = block_freelists(); |
6885 | 2341 MetaWord* p = NULL; |
6725
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|
2342 // Allocation from the dictionary is expensive in the sense that |
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|
2343 // the dictionary has to be searched for a size. Don't allocate |
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|
2344 // from the dictionary until it starts to get fat. Is this |
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|
2345 // a reasonable policy? Maybe an skinny dictionary is fast enough |
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|
2346 // for allocations. Do some profiling. JJJ |
6885 | 2347 if (fl->total_size() > allocation_from_dictionary_limit) { |
2348 p = fl->get_block(raw_word_size); | |
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|
2349 } |
6885 | 2350 if (p == NULL) { |
2351 p = allocate_work(raw_word_size); | |
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|
2352 } |
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|
2353 |
6885 | 2354 return p; |
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|
2355 } |
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|
2356 |
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|
2357 // Returns the address of spaced allocated for "word_size". |
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|
2358 // This methods does not know about blocks (Metablocks) |
6885 | 2359 MetaWord* SpaceManager::allocate_work(size_t word_size) { |
6725
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diff
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|
2360 assert_lock_strong(_lock); |
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2361 #ifdef ASSERT |
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parents:
diff
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|
2362 if (Metadebug::test_metadata_failure()) { |
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parents:
diff
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|
2363 return NULL; |
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coleenp
parents:
diff
changeset
|
2364 } |
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parents:
diff
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|
2365 #endif |
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parents:
diff
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|
2366 // Is there space in the current chunk? |
6885 | 2367 MetaWord* result = NULL; |
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|
2368 |
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parents:
diff
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|
2369 // For DumpSharedSpaces, only allocate out of the current chunk which is |
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parents:
diff
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|
2370 // never null because we gave it the size we wanted. Caller reports out |
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parents:
diff
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|
2371 // of memory if this returns null. |
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|
2372 if (DumpSharedSpaces) { |
da91efe96a93
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diff
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|
2373 assert(current_chunk() != NULL, "should never happen"); |
10183
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2374 inc_used_metrics(word_size); |
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|
2375 return current_chunk()->allocate(word_size); // caller handles null result |
da91efe96a93
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diff
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|
2376 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
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|
2377 |
6725
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|
2378 if (current_chunk() != NULL) { |
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parents:
diff
changeset
|
2379 result = current_chunk()->allocate(word_size); |
da91efe96a93
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parents:
diff
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|
2380 } |
da91efe96a93
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diff
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|
2381 |
da91efe96a93
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diff
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|
2382 if (result == NULL) { |
da91efe96a93
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coleenp
parents:
diff
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|
2383 result = grow_and_allocate(word_size); |
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parents:
diff
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|
2384 } |
12838
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diff
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|
2385 |
85c1ca43713f
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parents:
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|
2386 if (result != NULL) { |
10183
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|
2387 inc_used_metrics(word_size); |
6885 | 2388 assert(result != (MetaWord*) chunks_in_use(MediumIndex), |
2389 "Head of the list is being allocated"); | |
6725
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|
2390 } |
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diff
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|
2391 |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2392 return result; |
da91efe96a93
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parents:
diff
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|
2393 } |
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parents:
diff
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|
2394 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2395 void SpaceManager::verify() { |
da91efe96a93
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coleenp
parents:
diff
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|
2396 // If there are blocks in the dictionary, then |
14909 | 2397 // verfication of chunks does not work since |
6725
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parents:
diff
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|
2398 // being in the dictionary alters a chunk. |
6885 | 2399 if (block_freelists()->total_size() == 0) { |
7446
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|
2400 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
6725
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coleenp
parents:
diff
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|
2401 Metachunk* curr = chunks_in_use(i); |
da91efe96a93
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coleenp
parents:
diff
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|
2402 while (curr != NULL) { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2403 curr->verify(); |
7208
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jmasa
parents:
7187
diff
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|
2404 verify_chunk_size(curr); |
6725
da91efe96a93
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parents:
diff
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|
2405 curr = curr->next(); |
da91efe96a93
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coleenp
parents:
diff
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|
2406 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
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|
2407 } |
da91efe96a93
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coleenp
parents:
diff
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|
2408 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2409 } |
da91efe96a93
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coleenp
parents:
diff
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|
2410 |
7208
eade6b2e4782
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jmasa
parents:
7187
diff
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|
2411 void SpaceManager::verify_chunk_size(Metachunk* chunk) { |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2412 assert(is_humongous(chunk->word_size()) || |
7446
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2413 chunk->word_size() == medium_chunk_size() || |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
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|
2414 chunk->word_size() == small_chunk_size() || |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2415 chunk->word_size() == specialized_chunk_size(), |
7208
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2416 "Chunk size is wrong"); |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2417 return; |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2418 } |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2419 |
6725
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parents:
diff
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|
2420 #ifdef ASSERT |
10183
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jmasa
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|
2421 void SpaceManager::verify_allocated_blocks_words() { |
6725
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coleenp
parents:
diff
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|
2422 // Verification is only guaranteed at a safepoint. |
10183
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parents:
10175
diff
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|
2423 assert(SafepointSynchronize::is_at_safepoint() || !Universe::is_fully_initialized(), |
868d87ed63c8
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jmasa
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10175
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|
2424 "Verification can fail if the applications is running"); |
868d87ed63c8
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jmasa
parents:
10175
diff
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|
2425 assert(allocated_blocks_words() == sum_used_in_chunks_in_use(), |
8007
d9058e388631
8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents:
7447
diff
changeset
|
2426 err_msg("allocation total is not consistent " SIZE_FORMAT |
d9058e388631
8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents:
7447
diff
changeset
|
2427 " vs " SIZE_FORMAT, |
10183
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10175
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|
2428 allocated_blocks_words(), sum_used_in_chunks_in_use())); |
6725
da91efe96a93
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coleenp
parents:
diff
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|
2429 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2430 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2431 #endif |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2432 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2433 void SpaceManager::dump(outputStream* const out) const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2434 size_t curr_total = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2435 size_t waste = 0; |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2436 uint i = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2437 size_t used = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2438 size_t capacity = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2439 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2440 // Add up statistics for all chunks in this SpaceManager. |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
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|
2441 for (ChunkIndex index = ZeroIndex; |
6885 | 2442 index < NumberOfInUseLists; |
6725
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coleenp
parents:
diff
changeset
|
2443 index = next_chunk_index(index)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2444 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2445 curr != NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2446 curr = curr->next()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2447 out->print("%d) ", i++); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2448 curr->print_on(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2449 curr_total += curr->word_size(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2450 used += curr->used_word_size(); |
12902 | 2451 capacity += curr->word_size(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2452 waste += curr->free_word_size() + curr->overhead();; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2453 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2454 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2455 |
12239 | 2456 if (TraceMetadataChunkAllocation && Verbose) { |
2457 block_freelists()->print_on(out); | |
2458 } | |
2459 | |
7446
e51c9860cf66
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jmasa
parents:
7435
diff
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|
2460 size_t free = current_chunk() == NULL ? 0 : current_chunk()->free_word_size(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2461 // Free space isn't wasted. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2462 waste -= free; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2463 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2464 out->print_cr("total of all chunks " SIZE_FORMAT " used " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2465 " free " SIZE_FORMAT " capacity " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2466 " waste " SIZE_FORMAT, curr_total, used, free, capacity, waste); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2467 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2468 |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6969
diff
changeset
|
2469 #ifndef PRODUCT |
6725
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coleenp
parents:
diff
changeset
|
2470 void SpaceManager::mangle_freed_chunks() { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2471 for (ChunkIndex index = ZeroIndex; |
6885 | 2472 index < NumberOfInUseLists; |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2473 index = next_chunk_index(index)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2474 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2475 curr != NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2476 curr = curr->next()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2477 curr->mangle(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2478 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2479 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2480 } |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6969
diff
changeset
|
2481 #endif // PRODUCT |
6725
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coleenp
parents:
diff
changeset
|
2482 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2483 // MetaspaceAux |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2484 |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2485 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2486 size_t MetaspaceAux::_allocated_capacity_words[] = {0, 0}; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2487 size_t MetaspaceAux::_allocated_used_words[] = {0, 0}; |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
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|
2488 |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2489 size_t MetaspaceAux::free_bytes(Metaspace::MetadataType mdtype) { |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2490 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2491 return list == NULL ? 0 : list->free_bytes(); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2492 } |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2493 |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2494 size_t MetaspaceAux::free_bytes() { |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2495 return free_bytes(Metaspace::ClassType) + free_bytes(Metaspace::NonClassType); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2496 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
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diff
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|
2497 |
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8014862: Add fast Metasapce capacity and used per MetadataType
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|
2498 void MetaspaceAux::dec_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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|
2499 assert_lock_strong(SpaceManager::expand_lock()); |
10330
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|
2500 assert(words <= allocated_capacity_words(mdtype), |
10183
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|
2501 err_msg("About to decrement below 0: words " SIZE_FORMAT |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
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diff
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|
2502 " is greater than _allocated_capacity_words[%u] " SIZE_FORMAT, |
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
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|
2503 words, mdtype, allocated_capacity_words(mdtype))); |
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
changeset
|
2504 _allocated_capacity_words[mdtype] -= words; |
10183
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parents:
10175
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|
2505 } |
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diff
changeset
|
2506 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
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diff
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|
2507 void MetaspaceAux::inc_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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|
2508 assert_lock_strong(SpaceManager::expand_lock()); |
868d87ed63c8
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jmasa
parents:
10175
diff
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|
2509 // Needs to be atomic |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
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diff
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|
2510 _allocated_capacity_words[mdtype] += words; |
10183
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|
2511 } |
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diff
changeset
|
2512 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
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|
2513 void MetaspaceAux::dec_used(Metaspace::MetadataType mdtype, size_t words) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
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|
2514 assert(words <= allocated_used_words(mdtype), |
10183
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jmasa
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diff
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|
2515 err_msg("About to decrement below 0: words " SIZE_FORMAT |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
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|
2516 " is greater than _allocated_used_words[%u] " SIZE_FORMAT, |
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
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|
2517 words, mdtype, allocated_used_words(mdtype))); |
10183
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parents:
10175
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|
2518 // For CMS deallocation of the Metaspaces occurs during the |
868d87ed63c8
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|
2519 // sweep which is a concurrent phase. Protection by the expand_lock() |
868d87ed63c8
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|
2520 // is not enough since allocation is on a per Metaspace basis |
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|
2521 // and protected by the Metaspace lock. |
868d87ed63c8
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|
2522 jlong minus_words = (jlong) - (jlong) words; |
10330
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|
2523 Atomic::add_ptr(minus_words, &_allocated_used_words[mdtype]); |
10183
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|
2524 } |
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|
2525 |
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|
2526 void MetaspaceAux::inc_used(Metaspace::MetadataType mdtype, size_t words) { |
10183
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|
2527 // _allocated_used_words tracks allocations for |
868d87ed63c8
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diff
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|
2528 // each piece of metadata. Those allocations are |
868d87ed63c8
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|
2529 // generally done concurrently by different application |
868d87ed63c8
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jmasa
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diff
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|
2530 // threads so must be done atomically. |
10330
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diff
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|
2531 Atomic::add_ptr(words, &_allocated_used_words[mdtype]); |
10183
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|
2532 } |
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|
2533 |
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|
2534 size_t MetaspaceAux::used_bytes_slow(Metaspace::MetadataType mdtype) { |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
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6726
diff
changeset
|
2535 size_t used = 0; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
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6726
diff
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|
2536 ClassLoaderDataGraphMetaspaceIterator iter; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
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diff
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|
2537 while (iter.repeat()) { |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
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6726
diff
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|
2538 Metaspace* msp = iter.get_next(); |
10183
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|
2539 // Sum allocated_blocks_words for each metaspace |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
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|
2540 if (msp != NULL) { |
10183
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10175
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|
2541 used += msp->used_words_slow(mdtype); |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
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6726
diff
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|
2542 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
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6726
diff
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|
2543 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
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|
2544 return used * BytesPerWord; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
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6726
diff
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|
2545 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
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6726
diff
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|
2546 |
12235 | 2547 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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|
2548 size_t free = 0; |
da91efe96a93
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|
2549 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
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|
2550 while (iter.repeat()) { |
da91efe96a93
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diff
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|
2551 Metaspace* msp = iter.get_next(); |
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diff
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|
2552 if (msp != NULL) { |
12235 | 2553 free += msp->free_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2554 } |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2555 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2556 return free * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2557 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2558 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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parents:
10175
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|
2559 size_t MetaspaceAux::capacity_bytes_slow(Metaspace::MetadataType mdtype) { |
12056
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8003424: Enable Class Data Sharing for CompressedOops
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|
2560 if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
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|
2561 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2562 } |
10183
868d87ed63c8
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parents:
10175
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|
2563 // Don't count the space in the freelists. That space will be |
868d87ed63c8
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10175
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|
2564 // added to the capacity calculation as needed. |
868d87ed63c8
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10175
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|
2565 size_t capacity = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2566 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
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diff
changeset
|
2567 while (iter.repeat()) { |
da91efe96a93
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diff
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|
2568 Metaspace* msp = iter.get_next(); |
da91efe96a93
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coleenp
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diff
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|
2569 if (msp != NULL) { |
10183
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parents:
10175
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|
2570 capacity += msp->capacity_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2571 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2572 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2573 return capacity * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2574 } |
da91efe96a93
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diff
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|
2575 |
12235 | 2576 size_t MetaspaceAux::capacity_bytes_slow() { |
2577 #ifdef PRODUCT | |
2578 // Use allocated_capacity_bytes() in PRODUCT instead of this function. | |
2579 guarantee(false, "Should not call capacity_bytes_slow() in the PRODUCT"); | |
2580 #endif | |
2581 size_t class_capacity = capacity_bytes_slow(Metaspace::ClassType); | |
2582 size_t non_class_capacity = capacity_bytes_slow(Metaspace::NonClassType); | |
2583 assert(allocated_capacity_bytes() == class_capacity + non_class_capacity, | |
2584 err_msg("bad accounting: allocated_capacity_bytes() " SIZE_FORMAT | |
2585 " class_capacity + non_class_capacity " SIZE_FORMAT | |
2586 " class_capacity " SIZE_FORMAT " non_class_capacity " SIZE_FORMAT, | |
2587 allocated_capacity_bytes(), class_capacity + non_class_capacity, | |
2588 class_capacity, non_class_capacity)); | |
2589 | |
2590 return class_capacity + non_class_capacity; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
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|
2591 } |
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diff
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|
2592 |
12235 | 2593 size_t MetaspaceAux::reserved_bytes(Metaspace::MetadataType mdtype) { |
2594 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); | |
12236
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2595 return list == NULL ? 0 : list->reserved_bytes(); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2596 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2597 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2598 size_t MetaspaceAux::committed_bytes(Metaspace::MetadataType mdtype) { |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2599 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2600 return list == NULL ? 0 : list->committed_bytes(); |
12235 | 2601 } |
2602 | |
2603 size_t MetaspaceAux::min_chunk_size_words() { return Metaspace::first_chunk_word_size(); } | |
2604 | |
2605 size_t MetaspaceAux::free_chunks_total_words(Metaspace::MetadataType mdtype) { | |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2606 ChunkManager* chunk_manager = Metaspace::get_chunk_manager(mdtype); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
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12302
diff
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|
2607 if (chunk_manager == NULL) { |
12056
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8003424: Enable Class Data Sharing for CompressedOops
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diff
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|
2608 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
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11966
diff
changeset
|
2609 } |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2610 chunk_manager->slow_verify(); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
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12302
diff
changeset
|
2611 return chunk_manager->free_chunks_total_words(); |
6725
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diff
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|
2612 } |
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diff
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|
2613 |
12235 | 2614 size_t MetaspaceAux::free_chunks_total_bytes(Metaspace::MetadataType mdtype) { |
2615 return free_chunks_total_words(mdtype) * BytesPerWord; | |
6725
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diff
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|
2616 } |
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diff
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|
2617 |
12235 | 2618 size_t MetaspaceAux::free_chunks_total_words() { |
2619 return free_chunks_total_words(Metaspace::ClassType) + | |
2620 free_chunks_total_words(Metaspace::NonClassType); | |
10183
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|
2621 } |
868d87ed63c8
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10175
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changeset
|
2622 |
12235 | 2623 size_t MetaspaceAux::free_chunks_total_bytes() { |
2624 return free_chunks_total_words() * BytesPerWord; | |
10183
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parents:
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|
2625 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
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10175
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|
2626 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2627 void MetaspaceAux::print_metaspace_change(size_t prev_metadata_used) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2628 gclog_or_tty->print(", [Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2629 if (PrintGCDetails && Verbose) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2630 gclog_or_tty->print(" " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2631 "->" SIZE_FORMAT |
10183
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jmasa
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10175
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|
2632 "(" SIZE_FORMAT ")", |
6725
da91efe96a93
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coleenp
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diff
changeset
|
2633 prev_metadata_used, |
11037
df7e1c0e3dc1
8014546: MetaspaceAux print_metaspace_change() should print "used" after GC not capacity
jmasa
parents:
10376
diff
changeset
|
2634 allocated_used_bytes(), |
12235 | 2635 reserved_bytes()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2636 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2637 gclog_or_tty->print(" " SIZE_FORMAT "K" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2638 "->" SIZE_FORMAT "K" |
10183
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jmasa
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10175
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changeset
|
2639 "(" SIZE_FORMAT "K)", |
12235 | 2640 prev_metadata_used/K, |
2641 allocated_used_bytes()/K, | |
2642 reserved_bytes()/K); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2643 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2644 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2645 gclog_or_tty->print("]"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2646 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2647 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2648 // This is printed when PrintGCDetails |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2649 void MetaspaceAux::print_on(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2650 Metaspace::MetadataType nct = Metaspace::NonClassType; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2651 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2652 out->print_cr(" Metaspace " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2653 "used " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2654 "capacity " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2655 "committed " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2656 "reserved " SIZE_FORMAT "K", |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2657 allocated_used_bytes()/K, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2658 allocated_capacity_bytes()/K, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2659 committed_bytes()/K, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2660 reserved_bytes()/K); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2661 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2662 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2663 Metaspace::MetadataType ct = Metaspace::ClassType; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2664 out->print_cr(" class space " |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2665 "used " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2666 "capacity " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2667 "committed " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2668 "reserved " SIZE_FORMAT "K", |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2669 allocated_used_bytes(ct)/K, |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2670 allocated_capacity_bytes(ct)/K, |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2671 committed_bytes(ct)/K, |
12235 | 2672 reserved_bytes(ct)/K); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2673 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2674 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2675 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2676 // Print information for class space and data space separately. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2677 // This is almost the same as above. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2678 void MetaspaceAux::print_on(outputStream* out, Metaspace::MetadataType mdtype) { |
12235 | 2679 size_t free_chunks_capacity_bytes = free_chunks_total_bytes(mdtype); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2680 size_t capacity_bytes = capacity_bytes_slow(mdtype); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2681 size_t used_bytes = used_bytes_slow(mdtype); |
12235 | 2682 size_t free_bytes = free_bytes_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2683 size_t used_and_free = used_bytes + free_bytes + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2684 free_chunks_capacity_bytes; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2685 out->print_cr(" Chunk accounting: used in chunks " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2686 "K + unused in chunks " SIZE_FORMAT "K + " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2687 " capacity in free chunks " SIZE_FORMAT "K = " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2688 "K capacity in allocated chunks " SIZE_FORMAT "K", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2689 used_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2690 free_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2691 free_chunks_capacity_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2692 used_and_free / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2693 capacity_bytes / K); |
8738
1c88b99a2b01
8009282: Assertion "assert(used_and_free == capacity_bytes) failed: Accounting is wrong" failed with -XX:+Verbose -XX:+TraceMetadataChunkAllocation
mgerdin
parents:
8040
diff
changeset
|
2694 // Accounting can only be correct if we got the values during a safepoint |
1c88b99a2b01
8009282: Assertion "assert(used_and_free == capacity_bytes) failed: Accounting is wrong" failed with -XX:+Verbose -XX:+TraceMetadataChunkAllocation
mgerdin
parents:
8040
diff
changeset
|
2695 assert(!SafepointSynchronize::is_at_safepoint() || used_and_free == capacity_bytes, "Accounting is wrong"); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2696 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2697 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2698 // Print total fragmentation for class metaspaces |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2699 void MetaspaceAux::print_class_waste(outputStream* out) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2700 assert(Metaspace::using_class_space(), "class metaspace not used"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2701 size_t cls_specialized_waste = 0, cls_small_waste = 0, cls_medium_waste = 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2702 size_t cls_specialized_count = 0, cls_small_count = 0, cls_medium_count = 0, cls_humongous_count = 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2703 ClassLoaderDataGraphMetaspaceIterator iter; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2704 while (iter.repeat()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2705 Metaspace* msp = iter.get_next(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2706 if (msp != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2707 cls_specialized_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(SpecializedIndex); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2708 cls_specialized_count += msp->class_vsm()->sum_count_in_chunks_in_use(SpecializedIndex); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2709 cls_small_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(SmallIndex); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2710 cls_small_count += msp->class_vsm()->sum_count_in_chunks_in_use(SmallIndex); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2711 cls_medium_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(MediumIndex); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2712 cls_medium_count += msp->class_vsm()->sum_count_in_chunks_in_use(MediumIndex); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2713 cls_humongous_count += msp->class_vsm()->sum_count_in_chunks_in_use(HumongousIndex); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2714 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2715 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2716 out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2717 SIZE_FORMAT " small(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2718 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2719 "large count " SIZE_FORMAT, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2720 cls_specialized_count, cls_specialized_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2721 cls_small_count, cls_small_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2722 cls_medium_count, cls_medium_waste, cls_humongous_count); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2723 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2724 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2725 // Print total fragmentation for data and class metaspaces separately |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2726 void MetaspaceAux::print_waste(outputStream* out) { |
11064
de2d15ce3d4a
8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents:
10376
diff
changeset
|
2727 size_t specialized_waste = 0, small_waste = 0, medium_waste = 0; |
de2d15ce3d4a
8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents:
10376
diff
changeset
|
2728 size_t specialized_count = 0, small_count = 0, medium_count = 0, humongous_count = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2729 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2730 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2731 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2732 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2733 if (msp != NULL) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2734 specialized_waste += msp->vsm()->sum_waste_in_chunks_in_use(SpecializedIndex); |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2735 specialized_count += msp->vsm()->sum_count_in_chunks_in_use(SpecializedIndex); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2736 small_waste += msp->vsm()->sum_waste_in_chunks_in_use(SmallIndex); |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2737 small_count += msp->vsm()->sum_count_in_chunks_in_use(SmallIndex); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2738 medium_waste += msp->vsm()->sum_waste_in_chunks_in_use(MediumIndex); |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2739 medium_count += msp->vsm()->sum_count_in_chunks_in_use(MediumIndex); |
11064
de2d15ce3d4a
8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents:
10376
diff
changeset
|
2740 humongous_count += msp->vsm()->sum_count_in_chunks_in_use(HumongousIndex); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2741 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2742 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2743 out->print_cr("Total fragmentation waste (words) doesn't count free space"); |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2744 out->print_cr(" data: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", " |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2745 SIZE_FORMAT " small(s) " SIZE_FORMAT ", " |
11064
de2d15ce3d4a
8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents:
10376
diff
changeset
|
2746 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", " |
de2d15ce3d4a
8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents:
10376
diff
changeset
|
2747 "large count " SIZE_FORMAT, |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2748 specialized_count, specialized_waste, small_count, |
11064
de2d15ce3d4a
8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
coleenp
parents:
10376
diff
changeset
|
2749 small_waste, medium_count, medium_waste, humongous_count); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2750 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2751 print_class_waste(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2752 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2753 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2754 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2755 // Dump global metaspace things from the end of ClassLoaderDataGraph |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2756 void MetaspaceAux::dump(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2757 out->print_cr("All Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2758 out->print("data space: "); print_on(out, Metaspace::NonClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2759 out->print("class space: "); print_on(out, Metaspace::ClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2760 print_waste(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2761 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2762 |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2763 void MetaspaceAux::verify_free_chunks() { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2764 Metaspace::chunk_manager_metadata()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2765 if (Metaspace::using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2766 Metaspace::chunk_manager_class()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2767 } |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2768 } |
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2769 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2770 void MetaspaceAux::verify_capacity() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2771 #ifdef ASSERT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2772 size_t running_sum_capacity_bytes = allocated_capacity_bytes(); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2773 // For purposes of the running sum of capacity, verify against capacity |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2774 size_t capacity_in_use_bytes = capacity_bytes_slow(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2775 assert(running_sum_capacity_bytes == capacity_in_use_bytes, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2776 err_msg("allocated_capacity_words() * BytesPerWord " SIZE_FORMAT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2777 " capacity_bytes_slow()" SIZE_FORMAT, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2778 running_sum_capacity_bytes, capacity_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2779 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2780 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2781 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2782 size_t capacity_in_use_bytes = capacity_bytes_slow(i); |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2783 assert(allocated_capacity_bytes(i) == capacity_in_use_bytes, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2784 err_msg("allocated_capacity_bytes(%u) " SIZE_FORMAT |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2785 " capacity_bytes_slow(%u)" SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2786 i, allocated_capacity_bytes(i), i, capacity_in_use_bytes)); |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2787 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2788 #endif |
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2789 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2790 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2791 void MetaspaceAux::verify_used() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2792 #ifdef ASSERT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2793 size_t running_sum_used_bytes = allocated_used_bytes(); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2794 // For purposes of the running sum of used, verify against used |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2795 size_t used_in_use_bytes = used_bytes_slow(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2796 assert(allocated_used_bytes() == used_in_use_bytes, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2797 err_msg("allocated_used_bytes() " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2798 " used_bytes_slow()" SIZE_FORMAT, |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2799 allocated_used_bytes(), used_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2800 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2801 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2802 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2803 size_t used_in_use_bytes = used_bytes_slow(i); |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2804 assert(allocated_used_bytes(i) == used_in_use_bytes, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2805 err_msg("allocated_used_bytes(%u) " SIZE_FORMAT |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2806 " used_bytes_slow(%u)" SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2807 i, allocated_used_bytes(i), i, used_in_use_bytes)); |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2808 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2809 #endif |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2810 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2811 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2812 void MetaspaceAux::verify_metrics() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2813 verify_capacity(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2814 verify_used(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2815 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2816 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2817 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2818 // Metaspace methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2819 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2820 size_t Metaspace::_first_chunk_word_size = 0; |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2821 size_t Metaspace::_first_class_chunk_word_size = 0; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2822 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2823 size_t Metaspace::_commit_alignment = 0; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2824 size_t Metaspace::_reserve_alignment = 0; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2825 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2826 Metaspace::Metaspace(Mutex* lock, MetaspaceType type) { |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2827 initialize(lock, type); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2828 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2829 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2830 Metaspace::~Metaspace() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2831 delete _vsm; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2832 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2833 delete _class_vsm; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2834 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2835 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2836 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2837 VirtualSpaceList* Metaspace::_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2838 VirtualSpaceList* Metaspace::_class_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2839 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2840 ChunkManager* Metaspace::_chunk_manager_metadata = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2841 ChunkManager* Metaspace::_chunk_manager_class = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2842 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2843 #define VIRTUALSPACEMULTIPLIER 2 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2844 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2845 #ifdef _LP64 |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2846 static const uint64_t UnscaledClassSpaceMax = (uint64_t(max_juint) + 1); |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2847 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2848 void Metaspace::set_narrow_klass_base_and_shift(address metaspace_base, address cds_base) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2849 // Figure out the narrow_klass_base and the narrow_klass_shift. The |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2850 // narrow_klass_base is the lower of the metaspace base and the cds base |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2851 // (if cds is enabled). The narrow_klass_shift depends on the distance |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2852 // between the lower base and higher address. |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2853 address lower_base; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2854 address higher_address; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2855 if (UseSharedSpaces) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2856 higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2857 (address)(metaspace_base + compressed_class_space_size())); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2858 lower_base = MIN2(metaspace_base, cds_base); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2859 } else { |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2860 higher_address = metaspace_base + compressed_class_space_size(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2861 lower_base = metaspace_base; |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2862 |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2863 uint64_t klass_encoding_max = UnscaledClassSpaceMax << LogKlassAlignmentInBytes; |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2864 // If compressed class space fits in lower 32G, we don't need a base. |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2865 if (higher_address <= (address)klass_encoding_max) { |
14909 | 2866 lower_base = 0; // effectively lower base is zero. |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2867 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2868 } |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2869 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2870 Universe::set_narrow_klass_base(lower_base); |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
2871 |
13037
c8fc12209830
8027616: Off by one error in putback for compressed oops nashorn performance improvement
coleenp
parents:
13001
diff
changeset
|
2872 if ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2873 Universe::set_narrow_klass_shift(0); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2874 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2875 assert(!UseSharedSpaces, "Cannot shift with UseSharedSpaces"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2876 Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2877 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2878 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2879 |
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2880 // Return TRUE if the specified metaspace_base and cds_base are close enough |
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2881 // to work with compressed klass pointers. |
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2882 bool Metaspace::can_use_cds_with_metaspace_addr(char* metaspace_base, address cds_base) { |
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2883 assert(cds_base != 0 && UseSharedSpaces, "Only use with CDS"); |
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2884 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
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2885 address lower_base = MIN2((address)metaspace_base, cds_base); |
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2886 address higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
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2887 (address)(metaspace_base + compressed_class_space_size())); |
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2888 return ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax); |
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2889 } |
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2890 |
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2891 // Try to allocate the metaspace at the requested addr. |
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2892 void Metaspace::allocate_metaspace_compressed_klass_ptrs(char* requested_addr, address cds_base) { |
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2893 assert(using_class_space(), "called improperly"); |
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2894 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
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2895 assert(compressed_class_space_size() < KlassEncodingMetaspaceMax, |
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2896 "Metaspace size is too big"); |
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2897 assert_is_ptr_aligned(requested_addr, _reserve_alignment); |
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2898 assert_is_ptr_aligned(cds_base, _reserve_alignment); |
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2899 assert_is_size_aligned(compressed_class_space_size(), _reserve_alignment); |
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2900 |
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2901 // Don't use large pages for the class space. |
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2902 bool large_pages = false; |
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2903 |
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2904 ReservedSpace metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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2905 _reserve_alignment, |
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2906 large_pages, |
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2907 requested_addr, 0); |
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2908 if (!metaspace_rs.is_reserved()) { |
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2909 if (UseSharedSpaces) { |
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2910 size_t increment = align_size_up(1*G, _reserve_alignment); |
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2911 |
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2912 // Keep trying to allocate the metaspace, increasing the requested_addr |
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2913 // by 1GB each time, until we reach an address that will no longer allow |
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2914 // use of CDS with compressed klass pointers. |
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2915 char *addr = requested_addr; |
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2916 while (!metaspace_rs.is_reserved() && (addr + increment > addr) && |
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2917 can_use_cds_with_metaspace_addr(addr + increment, cds_base)) { |
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2918 addr = addr + increment; |
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2919 metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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2920 _reserve_alignment, large_pages, addr, 0); |
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2921 } |
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2922 } |
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2923 |
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2924 // If no successful allocation then try to allocate the space anywhere. If |
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2925 // that fails then OOM doom. At this point we cannot try allocating the |
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2926 // metaspace as if UseCompressedClassPointers is off because too much |
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2927 // initialization has happened that depends on UseCompressedClassPointers. |
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2928 // So, UseCompressedClassPointers cannot be turned off at this point. |
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2929 if (!metaspace_rs.is_reserved()) { |
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2930 metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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2931 _reserve_alignment, large_pages); |
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2932 if (!metaspace_rs.is_reserved()) { |
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2933 vm_exit_during_initialization(err_msg("Could not allocate metaspace: %d bytes", |
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2934 compressed_class_space_size())); |
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2935 } |
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2936 } |
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|
2937 } |
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|
2938 |
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2939 // If we got here then the metaspace got allocated. |
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2940 MemTracker::record_virtual_memory_type((address)metaspace_rs.base(), mtClass); |
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2941 |
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2942 // Verify that we can use shared spaces. Otherwise, turn off CDS. |
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2943 if (UseSharedSpaces && !can_use_cds_with_metaspace_addr(metaspace_rs.base(), cds_base)) { |
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2944 FileMapInfo::stop_sharing_and_unmap( |
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2945 "Could not allocate metaspace at a compatible address"); |
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|
2946 } |
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|
2947 |
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2948 set_narrow_klass_base_and_shift((address)metaspace_rs.base(), |
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2949 UseSharedSpaces ? (address)cds_base : 0); |
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|
2950 |
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|
2951 initialize_class_space(metaspace_rs); |
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|
2952 |
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2953 if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) { |
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2954 gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: " SIZE_FORMAT, |
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2955 Universe::narrow_klass_base(), Universe::narrow_klass_shift()); |
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2956 gclog_or_tty->print_cr("Compressed class space size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT, |
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2957 compressed_class_space_size(), metaspace_rs.base(), requested_addr); |
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2958 } |
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2959 } |
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2960 |
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2961 // For UseCompressedClassPointers the class space is reserved above the top of |
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2962 // the Java heap. The argument passed in is at the base of the compressed space. |
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2963 void Metaspace::initialize_class_space(ReservedSpace rs) { |
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2964 // The reserved space size may be bigger because of alignment, esp with UseLargePages |
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2965 assert(rs.size() >= CompressedClassSpaceSize, |
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2966 err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize)); |
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2967 assert(using_class_space(), "Must be using class space"); |
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2968 _class_space_list = new VirtualSpaceList(rs); |
12303
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2969 _chunk_manager_class = new ChunkManager(SpecializedChunk, ClassSmallChunk, ClassMediumChunk); |
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2970 |
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2971 if (!_class_space_list->initialization_succeeded()) { |
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2972 vm_exit_during_initialization("Failed to setup compressed class space virtual space list."); |
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2973 } |
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2974 } |
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|
2975 |
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|
2976 #endif |
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2977 |
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2978 void Metaspace::ergo_initialize() { |
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2979 if (DumpSharedSpaces) { |
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2980 // Using large pages when dumping the shared archive is currently not implemented. |
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2981 FLAG_SET_ERGO(bool, UseLargePagesInMetaspace, false); |
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2982 } |
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2983 |
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2984 size_t page_size = os::vm_page_size(); |
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2985 if (UseLargePages && UseLargePagesInMetaspace) { |
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2986 page_size = os::large_page_size(); |
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2987 } |
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2988 |
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2989 _commit_alignment = page_size; |
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2990 _reserve_alignment = MAX2(page_size, (size_t)os::vm_allocation_granularity()); |
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2991 |
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2992 // Do not use FLAG_SET_ERGO to update MaxMetaspaceSize, since this will |
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2993 // override if MaxMetaspaceSize was set on the command line or not. |
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2994 // This information is needed later to conform to the specification of the |
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2995 // java.lang.management.MemoryUsage API. |
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2996 // |
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2997 // Ideally, we would be able to set the default value of MaxMetaspaceSize in |
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2998 // globals.hpp to the aligned value, but this is not possible, since the |
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2999 // alignment depends on other flags being parsed. |
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3000 MaxMetaspaceSize = align_size_down_bounded(MaxMetaspaceSize, _reserve_alignment); |
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3001 |
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|
3002 if (MetaspaceSize > MaxMetaspaceSize) { |
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3003 MetaspaceSize = MaxMetaspaceSize; |
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|
3004 } |
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|
3005 |
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|
3006 MetaspaceSize = align_size_down_bounded(MetaspaceSize, _commit_alignment); |
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3007 |
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|
3008 assert(MetaspaceSize <= MaxMetaspaceSize, "MetaspaceSize should be limited by MaxMetaspaceSize"); |
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3009 |
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3010 if (MetaspaceSize < 256*K) { |
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3011 vm_exit_during_initialization("Too small initial Metaspace size"); |
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|
3012 } |
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|
3013 |
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|
3014 MinMetaspaceExpansion = align_size_down_bounded(MinMetaspaceExpansion, _commit_alignment); |
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3015 MaxMetaspaceExpansion = align_size_down_bounded(MaxMetaspaceExpansion, _commit_alignment); |
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|
3016 |
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|
3017 CompressedClassSpaceSize = align_size_down_bounded(CompressedClassSpaceSize, _reserve_alignment); |
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3018 set_compressed_class_space_size(CompressedClassSpaceSize); |
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3019 } |
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|
3020 |
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3021 void Metaspace::global_initialize() { |
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3022 // Initialize the alignment for shared spaces. |
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|
3023 int max_alignment = os::vm_page_size(); |
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3024 size_t cds_total = 0; |
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3025 |
6725
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3026 MetaspaceShared::set_max_alignment(max_alignment); |
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3027 |
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3028 if (DumpSharedSpaces) { |
12838
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3029 SharedReadOnlySize = align_size_up(SharedReadOnlySize, max_alignment); |
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3030 SharedReadWriteSize = align_size_up(SharedReadWriteSize, max_alignment); |
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3031 SharedMiscDataSize = align_size_up(SharedMiscDataSize, max_alignment); |
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3032 SharedMiscCodeSize = align_size_up(SharedMiscCodeSize, max_alignment); |
6725
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3033 |
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|
3034 // Initialize with the sum of the shared space sizes. The read-only |
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3035 // and read write metaspace chunks will be allocated out of this and the |
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diff
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|
3036 // remainder is the misc code and data chunks. |
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|
3037 cds_total = FileMapInfo::shared_spaces_size(); |
12838
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3038 cds_total = align_size_up(cds_total, _reserve_alignment); |
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|
3039 _space_list = new VirtualSpaceList(cds_total/wordSize); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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12302
diff
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|
3040 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk); |
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|
3041 |
12838
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|
3042 if (!_space_list->initialization_succeeded()) { |
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|
3043 vm_exit_during_initialization("Unable to dump shared archive.", NULL); |
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|
3044 } |
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|
3045 |
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|
3046 #ifdef _LP64 |
13000
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3047 if (cds_total + compressed_class_space_size() > UnscaledClassSpaceMax) { |
12838
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|
3048 vm_exit_during_initialization("Unable to dump shared archive.", |
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|
3049 err_msg("Size of archive (" SIZE_FORMAT ") + compressed class space (" |
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3050 SIZE_FORMAT ") == total (" SIZE_FORMAT ") is larger than compressed " |
13000
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|
3051 "klass limit: " SIZE_FORMAT, cds_total, compressed_class_space_size(), |
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|
3052 cds_total + compressed_class_space_size(), UnscaledClassSpaceMax)); |
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|
3053 } |
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|
3054 |
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|
3055 // Set the compressed klass pointer base so that decoding of these pointers works |
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|
3056 // properly when creating the shared archive. |
12226
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|
3057 assert(UseCompressedOops && UseCompressedClassPointers, |
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|
3058 "UseCompressedOops and UseCompressedClassPointers must be set"); |
12056
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|
3059 Universe::set_narrow_klass_base((address)_space_list->current_virtual_space()->bottom()); |
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|
3060 if (TraceMetavirtualspaceAllocation && Verbose) { |
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|
3061 gclog_or_tty->print_cr("Setting_narrow_klass_base to Address: " PTR_FORMAT, |
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|
3062 _space_list->current_virtual_space()->bottom()); |
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|
3063 } |
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|
3064 |
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|
3065 Universe::set_narrow_klass_shift(0); |
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|
3066 #endif |
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|
3067 |
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|
3068 } else { |
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|
3069 // If using shared space, open the file that contains the shared space |
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|
3070 // and map in the memory before initializing the rest of metaspace (so |
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|
3071 // the addresses don't conflict) |
12056
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|
3072 address cds_address = NULL; |
6725
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|
3073 if (UseSharedSpaces) { |
da91efe96a93
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|
3074 FileMapInfo* mapinfo = new FileMapInfo(); |
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|
3075 memset(mapinfo, 0, sizeof(FileMapInfo)); |
da91efe96a93
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diff
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|
3076 |
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|
3077 // Open the shared archive file, read and validate the header. If |
da91efe96a93
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diff
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|
3078 // initialization fails, shared spaces [UseSharedSpaces] are |
da91efe96a93
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diff
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|
3079 // disabled and the file is closed. |
da91efe96a93
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diff
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|
3080 // Map in spaces now also |
da91efe96a93
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diff
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|
3081 if (mapinfo->initialize() && MetaspaceShared::map_shared_spaces(mapinfo)) { |
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diff
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|
3082 FileMapInfo::set_current_info(mapinfo); |
12838
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|
3083 cds_total = FileMapInfo::shared_spaces_size(); |
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|
3084 cds_address = (address)mapinfo->region_base(0); |
6725
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diff
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|
3085 } else { |
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diff
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|
3086 assert(!mapinfo->is_open() && !UseSharedSpaces, |
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diff
changeset
|
3087 "archive file not closed or shared spaces not disabled."); |
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diff
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|
3088 } |
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diff
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|
3089 } |
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|
3090 |
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|
3091 #ifdef _LP64 |
12226
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|
3092 // If UseCompressedClassPointers is set then allocate the metaspace area |
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|
3093 // above the heap and above the CDS area (if it exists). |
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diff
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|
3094 if (using_class_space()) { |
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|
3095 if (UseSharedSpaces) { |
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|
3096 char* cds_end = (char*)(cds_address + cds_total); |
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|
3097 cds_end = (char *)align_ptr_up(cds_end, _reserve_alignment); |
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|
3098 allocate_metaspace_compressed_klass_ptrs(cds_end, cds_address); |
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|
3099 } else { |
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|
3100 char* base = (char*)align_ptr_up(Universe::heap()->reserved_region().end(), _reserve_alignment); |
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|
3101 allocate_metaspace_compressed_klass_ptrs(base, 0); |
12056
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|
3102 } |
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|
3103 } |
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|
3104 #endif |
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|
3105 |
7446
e51c9860cf66
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jmasa
parents:
7435
diff
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|
3106 // Initialize these before initializing the VirtualSpaceList |
6725
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|
3107 _first_chunk_word_size = InitialBootClassLoaderMetaspaceSize / BytesPerWord; |
7446
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diff
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|
3108 _first_chunk_word_size = align_word_size_up(_first_chunk_word_size); |
e51c9860cf66
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diff
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|
3109 // Make the first class chunk bigger than a medium chunk so it's not put |
e51c9860cf66
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diff
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|
3110 // on the medium chunk list. The next chunk will be small and progress |
e51c9860cf66
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7435
diff
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|
3111 // from there. This size calculated by -version. |
e51c9860cf66
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jmasa
parents:
7435
diff
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|
3112 _first_class_chunk_word_size = MIN2((size_t)MediumChunk*6, |
12226
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ehelin
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12110
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|
3113 (CompressedClassSpaceSize/BytesPerWord)*2); |
7446
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jmasa
parents:
7435
diff
changeset
|
3114 _first_class_chunk_word_size = align_word_size_up(_first_class_chunk_word_size); |
6725
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|
3115 // Arbitrarily set the initial virtual space to a multiple |
da91efe96a93
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|
3116 // of the boot class loader size. |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3117 size_t word_size = VIRTUALSPACEMULTIPLIER * _first_chunk_word_size; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
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12340
diff
changeset
|
3118 word_size = align_size_up(word_size, Metaspace::reserve_alignment_words()); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3119 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3120 // Initialize the list of virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3121 _space_list = new VirtualSpaceList(word_size); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3122 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3123 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3124 if (!_space_list->initialization_succeeded()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3125 vm_exit_during_initialization("Unable to setup metadata virtual space list.", NULL); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3126 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3127 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3128 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3129 MetaspaceGC::initialize(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3130 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3131 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3132 Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3133 size_t chunk_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3134 size_t chunk_bunch) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3135 // Get a chunk from the chunk freelist |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3136 Metachunk* chunk = get_chunk_manager(mdtype)->chunk_freelist_allocate(chunk_word_size); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3137 if (chunk != NULL) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3138 return chunk; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3139 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3140 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3141 return get_space_list(mdtype)->get_new_chunk(chunk_word_size, chunk_word_size, chunk_bunch); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3142 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3143 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3144 void Metaspace::initialize(Mutex* lock, MetaspaceType type) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3145 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3146 assert(space_list() != NULL, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3147 "Metadata VirtualSpaceList has not been initialized"); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3148 assert(chunk_manager_metadata() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3149 "Metadata ChunkManager has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3150 |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3151 _vsm = new SpaceManager(NonClassType, lock); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3152 if (_vsm == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3153 return; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3154 } |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3155 size_t word_size; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3156 size_t class_word_size; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3157 vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3158 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3159 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3160 assert(class_space_list() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3161 "Class VirtualSpaceList has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3162 assert(chunk_manager_class() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3163 "Class ChunkManager has not been initialized"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3164 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3165 // Allocate SpaceManager for classes. |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3166 _class_vsm = new SpaceManager(ClassType, lock); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3167 if (_class_vsm == NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3168 return; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3169 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3170 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3171 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3172 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3173 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3174 // Allocate chunk for metadata objects |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3175 Metachunk* new_chunk = get_initialization_chunk(NonClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3176 word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3177 vsm()->medium_chunk_bunch()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3178 assert(!DumpSharedSpaces || new_chunk != NULL, "should have enough space for both chunks"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3179 if (new_chunk != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3180 // Add to this manager's list of chunks in use and current_chunk(). |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3181 vsm()->add_chunk(new_chunk, true); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3182 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3183 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3184 // Allocate chunk for class metadata objects |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3185 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3186 Metachunk* class_chunk = get_initialization_chunk(ClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3187 class_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3188 class_vsm()->medium_chunk_bunch()); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3189 if (class_chunk != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3190 class_vsm()->add_chunk(class_chunk, true); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3191 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3192 } |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3193 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3194 _alloc_record_head = NULL; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3195 _alloc_record_tail = NULL; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3196 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3197 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3198 size_t Metaspace::align_word_size_up(size_t word_size) { |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3199 size_t byte_size = word_size * wordSize; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3200 return ReservedSpace::allocation_align_size_up(byte_size) / wordSize; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3201 } |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3202 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3203 MetaWord* Metaspace::allocate(size_t word_size, MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3204 // DumpSharedSpaces doesn't use class metadata area (yet) |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3205 // Also, don't use class_vsm() unless UseCompressedClassPointers is true. |
12340
bc918fd1e584
8025279: metaspace/flags/maxMetaspaceSize throws OOM: out of Compressed Klass space
mgerdin
parents:
12306
diff
changeset
|
3206 if (is_class_space_allocation(mdtype)) { |
6885 | 3207 return class_vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3208 } else { |
6885 | 3209 return vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3210 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3211 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3212 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3213 MetaWord* Metaspace::expand_and_allocate(size_t word_size, MetadataType mdtype) { |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3214 size_t delta_bytes = MetaspaceGC::delta_capacity_until_GC(word_size * BytesPerWord); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3215 assert(delta_bytes > 0, "Must be"); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3216 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3217 size_t after_inc = MetaspaceGC::inc_capacity_until_GC(delta_bytes); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3218 size_t before_inc = after_inc - delta_bytes; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3219 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3220 if (PrintGCDetails && Verbose) { |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3221 gclog_or_tty->print_cr("Increase capacity to GC from " SIZE_FORMAT |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3222 " to " SIZE_FORMAT, before_inc, after_inc); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3223 } |
6885 | 3224 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3225 return allocate(word_size, mdtype); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3226 } |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3227 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3228 // Space allocated in the Metaspace. This may |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3229 // be across several metadata virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3230 char* Metaspace::bottom() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3231 assert(DumpSharedSpaces, "only useful and valid for dumping shared spaces"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3232 return (char*)vsm()->current_chunk()->bottom(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3233 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3234 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3235 size_t Metaspace::used_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3236 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3237 return using_class_space() ? class_vsm()->sum_used_in_chunks_in_use() : 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3238 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3239 return vsm()->sum_used_in_chunks_in_use(); // includes overhead! |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3240 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3241 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3242 |
12235 | 3243 size_t Metaspace::free_words_slow(MetadataType mdtype) const { |
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3244 if (mdtype == ClassType) { |
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diff
changeset
|
3245 return using_class_space() ? class_vsm()->sum_free_in_chunks_in_use() : 0; |
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diff
changeset
|
3246 } else { |
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|
3247 return vsm()->sum_free_in_chunks_in_use(); |
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|
3248 } |
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|
3249 } |
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|
3250 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3251 // Space capacity in the Metaspace. It includes |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3252 // space in the list of chunks from which allocations |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
3253 // have been made. Don't include space in the global freelist and |
da91efe96a93
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diff
changeset
|
3254 // in the space available in the dictionary which |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3255 // is already counted in some chunk. |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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|
3256 size_t Metaspace::capacity_words_slow(MetadataType mdtype) const { |
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|
3257 if (mdtype == ClassType) { |
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|
3258 return using_class_space() ? class_vsm()->sum_capacity_in_chunks_in_use() : 0; |
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|
3259 } else { |
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|
3260 return vsm()->sum_capacity_in_chunks_in_use(); |
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|
3261 } |
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|
3262 } |
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diff
changeset
|
3263 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3264 size_t Metaspace::used_bytes_slow(MetadataType mdtype) const { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
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|
3265 return used_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
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10175
diff
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|
3266 } |
868d87ed63c8
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diff
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|
3267 |
868d87ed63c8
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|
3268 size_t Metaspace::capacity_bytes_slow(MetadataType mdtype) const { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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|
3269 return capacity_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
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10175
diff
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|
3270 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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diff
changeset
|
3271 |
6725
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|
3272 void Metaspace::deallocate(MetaWord* ptr, size_t word_size, bool is_class) { |
da91efe96a93
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coleenp
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|
3273 if (SafepointSynchronize::is_at_safepoint()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3274 assert(Thread::current()->is_VM_thread(), "should be the VM thread"); |
6885 | 3275 // Don't take Heap_lock |
10191
601183f604b2
8013129: Possible deadlock with Metaspace locks due to mixed usage of safepoint aware and non-safepoint aware locking
mgerdin
parents:
10183
diff
changeset
|
3276 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
14909 | 3277 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
6885 | 3278 // Dark matter. Too small for dictionary. |
3279 #ifdef ASSERT | |
3280 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3281 #endif | |
3282 return; | |
6725
da91efe96a93
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diff
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|
3283 } |
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diff
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|
3284 if (is_class && using_class_space()) { |
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diff
changeset
|
3285 class_vsm()->deallocate(ptr, word_size); |
6885 | 3286 } else { |
3287 vsm()->deallocate(ptr, word_size); | |
3288 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3289 } else { |
10191
601183f604b2
8013129: Possible deadlock with Metaspace locks due to mixed usage of safepoint aware and non-safepoint aware locking
mgerdin
parents:
10183
diff
changeset
|
3290 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
6725
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diff
changeset
|
3291 |
14909 | 3292 if (word_size < TreeChunk<Metablock, FreeList>::min_size()) { |
6885 | 3293 // Dark matter. Too small for dictionary. |
3294 #ifdef ASSERT | |
3295 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3296 #endif | |
3297 return; | |
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diff
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|
3298 } |
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|
3299 if (is_class && using_class_space()) { |
6885 | 3300 class_vsm()->deallocate(ptr, word_size); |
3301 } else { | |
3302 vsm()->deallocate(ptr, word_size); | |
3303 } | |
6725
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diff
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|
3304 } |
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parents:
diff
changeset
|
3305 } |
da91efe96a93
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diff
changeset
|
3306 |
12838
85c1ca43713f
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diff
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|
3307 |
12902 | 3308 MetaWord* Metaspace::allocate(ClassLoaderData* loader_data, size_t word_size, |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3309 bool read_only, MetaspaceObj::Type type, TRAPS) { |
6725
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diff
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|
3310 if (HAS_PENDING_EXCEPTION) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3311 assert(false, "Should not allocate with exception pending"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3312 return NULL; // caller does a CHECK_NULL too |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3313 } |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3314 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
3315 assert(loader_data != NULL, "Should never pass around a NULL loader_data. " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3316 "ClassLoaderData::the_null_class_loader_data() should have been used."); |
12838
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8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
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|
3317 |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3318 // Allocate in metaspaces without taking out a lock, because it deadlocks |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3319 // with the SymbolTable_lock. Dumping is single threaded for now. We'll have |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3320 // to revisit this for application class data sharing. |
da91efe96a93
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parents:
diff
changeset
|
3321 if (DumpSharedSpaces) { |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3322 assert(type > MetaspaceObj::UnknownType && type < MetaspaceObj::_number_of_types, "sanity"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3323 Metaspace* space = read_only ? loader_data->ro_metaspace() : loader_data->rw_metaspace(); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
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diff
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|
3324 MetaWord* result = space->allocate(word_size, NonClassType); |
6725
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
3325 if (result == NULL) { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
3326 report_out_of_shared_space(read_only ? SharedReadOnly : SharedReadWrite); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3327 } |
12902 | 3328 |
3329 space->record_allocation(result, type, space->vsm()->get_raw_word_size(word_size)); | |
3330 | |
3331 // Zero initialize. | |
3332 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0); | |
3333 | |
3334 return result; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3335 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
3336 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3337 MetadataType mdtype = (type == MetaspaceObj::ClassType) ? ClassType : NonClassType; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
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diff
changeset
|
3338 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3339 // Try to allocate metadata. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3340 MetaWord* result = loader_data->metaspace_non_null()->allocate(word_size, mdtype); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3341 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3342 if (result == NULL) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3343 // Allocation failed. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3344 if (is_init_completed()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3345 // Only start a GC if the bootstrapping has completed. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3346 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3347 // Try to clean out some memory and retry. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3348 result = Universe::heap()->collector_policy()->satisfy_failed_metadata_allocation( |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3349 loader_data, word_size, mdtype); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3350 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3351 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3352 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3353 if (result == NULL) { |
12980
91a88c8450f4
8026698: Incorrect error handling in Metaspace::allocate
mgerdin
parents:
12979
diff
changeset
|
3354 report_metadata_oome(loader_data, word_size, mdtype, CHECK_NULL); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3355 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3356 |
12902 | 3357 // Zero initialize. |
3358 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0); | |
3359 | |
3360 return result; | |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3361 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3362 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3363 size_t Metaspace::class_chunk_size(size_t word_size) { |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3364 assert(using_class_space(), "Has to use class space"); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3365 return class_vsm()->calc_chunk_size(word_size); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
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12906
diff
changeset
|
3366 } |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3367 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3368 void Metaspace::report_metadata_oome(ClassLoaderData* loader_data, size_t word_size, MetadataType mdtype, TRAPS) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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diff
changeset
|
3369 // If result is still null, we are out of memory. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3370 if (Verbose && TraceMetadataChunkAllocation) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3371 gclog_or_tty->print_cr("Metaspace allocation failed for size " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3372 SIZE_FORMAT, word_size); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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diff
changeset
|
3373 if (loader_data->metaspace_or_null() != NULL) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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diff
changeset
|
3374 loader_data->dump(gclog_or_tty); |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3375 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
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12340
diff
changeset
|
3376 MetaspaceAux::dump(gclog_or_tty); |
6725
da91efe96a93
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coleenp
parents:
diff
changeset
|
3377 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
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diff
changeset
|
3378 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
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12906
diff
changeset
|
3379 bool out_of_compressed_class_space = false; |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
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12906
diff
changeset
|
3380 if (is_class_space_allocation(mdtype)) { |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3381 Metaspace* metaspace = loader_data->metaspace_non_null(); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
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12906
diff
changeset
|
3382 out_of_compressed_class_space = |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3383 MetaspaceAux::committed_bytes(Metaspace::ClassType) + |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3384 (metaspace->class_chunk_size(word_size) * BytesPerWord) > |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3385 CompressedClassSpaceSize; |
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3386 } |
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3387 |
12838
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|
3388 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support |
12998
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|
3389 const char* space_string = out_of_compressed_class_space ? |
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|
3390 "Compressed class space" : "Metaspace"; |
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|
3391 |
12838
85c1ca43713f
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|
3392 report_java_out_of_memory(space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
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|
3393 |
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|
3394 if (JvmtiExport::should_post_resource_exhausted()) { |
85c1ca43713f
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|
3395 JvmtiExport::post_resource_exhausted( |
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3396 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR, |
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|
3397 space_string); |
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|
3398 } |
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|
3399 |
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|
3400 if (!is_init_completed()) { |
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|
3401 vm_exit_during_initialization("OutOfMemoryError", space_string); |
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|
3402 } |
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|
3403 |
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|
3404 if (out_of_compressed_class_space) { |
12838
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|
3405 THROW_OOP(Universe::out_of_memory_error_class_metaspace()); |
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|
3406 } else { |
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|
3407 THROW_OOP(Universe::out_of_memory_error_metaspace()); |
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|
3408 } |
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|
3409 } |
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3410 |
10376
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|
3411 void Metaspace::record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size) { |
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3412 assert(DumpSharedSpaces, "sanity"); |
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3413 |
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3414 AllocRecord *rec = new AllocRecord((address)ptr, type, (int)word_size * HeapWordSize); |
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3415 if (_alloc_record_head == NULL) { |
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|
3416 _alloc_record_head = _alloc_record_tail = rec; |
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|
3417 } else { |
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3418 _alloc_record_tail->_next = rec; |
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|
3419 _alloc_record_tail = rec; |
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|
3420 } |
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|
3421 } |
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|
3422 |
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|
3423 void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) { |
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|
3424 assert(DumpSharedSpaces, "unimplemented for !DumpSharedSpaces"); |
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|
3425 |
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|
3426 address last_addr = (address)bottom(); |
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|
3427 |
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|
3428 for (AllocRecord *rec = _alloc_record_head; rec; rec = rec->_next) { |
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|
3429 address ptr = rec->_ptr; |
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parents:
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|
3430 if (last_addr < ptr) { |
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|
3431 closure->doit(last_addr, MetaspaceObj::UnknownType, ptr - last_addr); |
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|
3432 } |
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|
3433 closure->doit(ptr, rec->_type, rec->_byte_size); |
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|
3434 last_addr = ptr + rec->_byte_size; |
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|
3435 } |
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|
3436 |
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|
3437 address top = ((address)bottom()) + used_bytes_slow(Metaspace::NonClassType); |
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|
3438 if (last_addr < top) { |
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|
3439 closure->doit(last_addr, MetaspaceObj::UnknownType, top - last_addr); |
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|
3440 } |
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|
3441 } |
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|
3442 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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|
3443 void Metaspace::purge(MetadataType mdtype) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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|
3444 get_space_list(mdtype)->purge(get_chunk_manager(mdtype)); |
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|
3445 } |
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|
3446 |
10175 | 3447 void Metaspace::purge() { |
3448 MutexLockerEx cl(SpaceManager::expand_lock(), | |
3449 Mutex::_no_safepoint_check_flag); | |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
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|
3450 purge(NonClassType); |
12056
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|
3451 if (using_class_space()) { |
12303
b960c9df4f11
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|
3452 purge(ClassType); |
12056
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|
3453 } |
10175 | 3454 } |
3455 | |
6725
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3456 void Metaspace::print_on(outputStream* out) const { |
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diff
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|
3457 // Print both class virtual space counts and metaspace. |
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diff
changeset
|
3458 if (Verbose) { |
12056
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|
3459 vsm()->print_on(out); |
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|
3460 if (using_class_space()) { |
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|
3461 class_vsm()->print_on(out); |
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|
3462 } |
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|
3463 } |
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diff
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|
3464 } |
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diff
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|
3465 |
14909 | 3466 bool Metaspace::contains(const void * ptr) { |
3467 if (MetaspaceShared::is_in_shared_space(ptr)) { | |
3468 return true; | |
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|
3469 } |
14909 | 3470 // This is checked while unlocked. As long as the virtualspaces are added |
3471 // at the end, the pointer will be in one of them. The virtual spaces | |
3472 // aren't deleted presently. When they are, some sort of locking might | |
3473 // be needed. Note, locking this can cause inversion problems with the | |
3474 // caller in MetaspaceObj::is_metadata() function. | |
3475 return space_list()->contains(ptr) || | |
3476 (using_class_space() && class_space_list()->contains(ptr)); | |
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|
3477 } |
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|
3478 |
da91efe96a93
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diff
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|
3479 void Metaspace::verify() { |
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changeset
|
3480 vsm()->verify(); |
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changeset
|
3481 if (using_class_space()) { |
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diff
changeset
|
3482 class_vsm()->verify(); |
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diff
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|
3483 } |
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diff
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|
3484 } |
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parents:
diff
changeset
|
3485 |
da91efe96a93
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diff
changeset
|
3486 void Metaspace::dump(outputStream* const out) const { |
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diff
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|
3487 out->print_cr("\nVirtual space manager: " INTPTR_FORMAT, vsm()); |
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diff
changeset
|
3488 vsm()->dump(out); |
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11966
diff
changeset
|
3489 if (using_class_space()) { |
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changeset
|
3490 out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm()); |
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diff
changeset
|
3491 class_vsm()->dump(out); |
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diff
changeset
|
3492 } |
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|
3493 } |
12236
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|
3494 |
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|
3495 /////////////// Unit tests /////////////// |
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|
3496 |
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|
3497 #ifndef PRODUCT |
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|
3498 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
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|
3499 class TestMetaspaceAuxTest : AllStatic { |
12236
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|
3500 public: |
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|
3501 static void test_reserved() { |
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|
3502 size_t reserved = MetaspaceAux::reserved_bytes(); |
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3503 |
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|
3504 assert(reserved > 0, "assert"); |
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|
3505 |
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3506 size_t committed = MetaspaceAux::committed_bytes(); |
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|
3507 assert(committed <= reserved, "assert"); |
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|
3508 |
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|
3509 size_t reserved_metadata = MetaspaceAux::reserved_bytes(Metaspace::NonClassType); |
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|
3510 assert(reserved_metadata > 0, "assert"); |
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|
3511 assert(reserved_metadata <= reserved, "assert"); |
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|
3512 |
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|
3513 if (UseCompressedClassPointers) { |
c4c768305a8f
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|
3514 size_t reserved_class = MetaspaceAux::reserved_bytes(Metaspace::ClassType); |
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|
3515 assert(reserved_class > 0, "assert"); |
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|
3516 assert(reserved_class < reserved, "assert"); |
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|
3517 } |
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|
3518 } |
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|
3519 |
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|
3520 static void test_committed() { |
c4c768305a8f
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|
3521 size_t committed = MetaspaceAux::committed_bytes(); |
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|
3522 |
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|
3523 assert(committed > 0, "assert"); |
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|
3524 |
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|
3525 size_t reserved = MetaspaceAux::reserved_bytes(); |
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|
3526 assert(committed <= reserved, "assert"); |
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8024638: Count and expose the amount of committed memory in the metaspaces
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|
3527 |
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|
3528 size_t committed_metadata = MetaspaceAux::committed_bytes(Metaspace::NonClassType); |
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|
3529 assert(committed_metadata > 0, "assert"); |
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|
3530 assert(committed_metadata <= committed, "assert"); |
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|
3531 |
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|
3532 if (UseCompressedClassPointers) { |
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|
3533 size_t committed_class = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
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|
3534 assert(committed_class > 0, "assert"); |
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|
3535 assert(committed_class < committed, "assert"); |
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|
3536 } |
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|
3537 } |
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|
3538 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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|
3539 static void test_virtual_space_list_large_chunk() { |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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|
3540 VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity()); |
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|
3541 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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|
3542 // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be |
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|
3543 // vm_allocation_granularity aligned on Windows. |
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8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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|
3544 size_t large_size = (size_t)(2*256*K + (os::vm_page_size()/BytesPerWord)); |
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|
3545 large_size += (os::vm_page_size()/BytesPerWord); |
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|
3546 vs_list->get_new_chunk(large_size, large_size, 0); |
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|
3547 } |
03f493ce3a71
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|
3548 |
12236
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|
3549 static void test() { |
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|
3550 test_reserved(); |
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|
3551 test_committed(); |
12306
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|
3552 test_virtual_space_list_large_chunk(); |
12236
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|
3553 } |
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|
3554 }; |
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|
3555 |
12306
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changeset
|
3556 void TestMetaspaceAux_test() { |
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|
3557 TestMetaspaceAuxTest::test(); |
12236
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|
3558 } |
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|
3559 |
12979
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|
3560 class TestVirtualSpaceNodeTest { |
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|
3561 static void chunk_up(size_t words_left, size_t& num_medium_chunks, |
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|
3562 size_t& num_small_chunks, |
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|
3563 size_t& num_specialized_chunks) { |
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|
3564 num_medium_chunks = words_left / MediumChunk; |
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|
3565 words_left = words_left % MediumChunk; |
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|
3566 |
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|
3567 num_small_chunks = words_left / SmallChunk; |
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|
3568 words_left = words_left % SmallChunk; |
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|
3569 // how many specialized chunks can we get? |
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|
3570 num_specialized_chunks = words_left / SpecializedChunk; |
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|
3571 assert(words_left % SpecializedChunk == 0, "should be nothing left"); |
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|
3572 } |
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|
3573 |
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|
3574 public: |
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|
3575 static void test() { |
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|
3576 MutexLockerEx ml(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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|
3577 const size_t vsn_test_size_words = MediumChunk * 4; |
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|
3578 const size_t vsn_test_size_bytes = vsn_test_size_words * BytesPerWord; |
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|
3579 |
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|
3580 // The chunk sizes must be multiples of eachother, or this will fail |
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|
3581 STATIC_ASSERT(MediumChunk % SmallChunk == 0); |
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|
3582 STATIC_ASSERT(SmallChunk % SpecializedChunk == 0); |
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|
3583 |
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|
3584 { // No committed memory in VSN |
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|
3585 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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|
3586 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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|
3587 vsn.initialize(); |
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|
3588 vsn.retire(&cm); |
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|
3589 assert(cm.sum_free_chunks_count() == 0, "did not commit any memory in the VSN"); |
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|
3590 } |
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changeset
|
3591 |
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|
3592 { // All of VSN is committed, half is used by chunks |
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|
3593 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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|
3594 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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|
3595 vsn.initialize(); |
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|
3596 vsn.expand_by(vsn_test_size_words, vsn_test_size_words); |
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|
3597 vsn.get_chunk_vs(MediumChunk); |
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|
3598 vsn.get_chunk_vs(MediumChunk); |
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|
3599 vsn.retire(&cm); |
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|
3600 assert(cm.sum_free_chunks_count() == 2, "should have been memory left for 2 medium chunks"); |
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|
3601 assert(cm.sum_free_chunks() == 2*MediumChunk, "sizes should add up"); |
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|
3602 } |
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|
3603 |
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|
3604 { // 4 pages of VSN is committed, some is used by chunks |
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|
3605 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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|
3606 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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|
3607 const size_t page_chunks = 4 * (size_t)os::vm_page_size() / BytesPerWord; |
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|
3608 assert(page_chunks < MediumChunk, "Test expects medium chunks to be at least 4*page_size"); |
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|
3609 vsn.initialize(); |
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|
3610 vsn.expand_by(page_chunks, page_chunks); |
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|
3611 vsn.get_chunk_vs(SmallChunk); |
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|
3612 vsn.get_chunk_vs(SpecializedChunk); |
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|
3613 vsn.retire(&cm); |
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|
3614 |
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|
3615 // committed - used = words left to retire |
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|
3616 const size_t words_left = page_chunks - SmallChunk - SpecializedChunk; |
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|
3617 |
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|
3618 size_t num_medium_chunks, num_small_chunks, num_spec_chunks; |
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|
3619 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks); |
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|
3620 |
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|
3621 assert(num_medium_chunks == 0, "should not get any medium chunks"); |
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|
3622 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks"); |
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|
3623 assert(cm.sum_free_chunks() == words_left, "sizes should add up"); |
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|
3624 } |
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|
3625 |
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|
3626 { // Half of VSN is committed, a humongous chunk is used |
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|
3627 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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|
3628 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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|
3629 vsn.initialize(); |
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|
3630 vsn.expand_by(MediumChunk * 2, MediumChunk * 2); |
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|
3631 vsn.get_chunk_vs(MediumChunk + SpecializedChunk); // Humongous chunks will be aligned up to MediumChunk + SpecializedChunk |
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3632 vsn.retire(&cm); |
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3633 |
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3634 const size_t words_left = MediumChunk * 2 - (MediumChunk + SpecializedChunk); |
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3635 size_t num_medium_chunks, num_small_chunks, num_spec_chunks; |
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3636 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks); |
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3637 |
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3638 assert(num_medium_chunks == 0, "should not get any medium chunks"); |
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3639 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks"); |
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3640 assert(cm.sum_free_chunks() == words_left, "sizes should add up"); |
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3641 } |
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3642 |
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3643 } |
13439
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3644 |
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3645 #define assert_is_available_positive(word_size) \ |
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3646 assert(vsn.is_available(word_size), \ |
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3647 err_msg(#word_size ": " PTR_FORMAT " bytes were not available in " \ |
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3648 "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \ |
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3649 (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end())); |
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3650 |
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3651 #define assert_is_available_negative(word_size) \ |
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3652 assert(!vsn.is_available(word_size), \ |
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3653 err_msg(#word_size ": " PTR_FORMAT " bytes should not be available in " \ |
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3654 "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \ |
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3655 (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end())); |
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3656 |
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3657 static void test_is_available_positive() { |
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3658 // Reserve some memory. |
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3659 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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3660 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3661 |
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3662 // Commit some memory. |
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3663 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3664 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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3665 assert(expanded, "Failed to commit"); |
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3666 |
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3667 // Check that is_available accepts the committed size. |
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3668 assert_is_available_positive(commit_word_size); |
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3669 |
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3670 // Check that is_available accepts half the committed size. |
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3671 size_t expand_word_size = commit_word_size / 2; |
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3672 assert_is_available_positive(expand_word_size); |
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3673 } |
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3674 |
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3675 static void test_is_available_negative() { |
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3676 // Reserve some memory. |
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3677 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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3678 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3679 |
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3680 // Commit some memory. |
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3681 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3682 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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3683 assert(expanded, "Failed to commit"); |
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3684 |
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3685 // Check that is_available doesn't accept a too large size. |
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3686 size_t two_times_commit_word_size = commit_word_size * 2; |
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3687 assert_is_available_negative(two_times_commit_word_size); |
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3688 } |
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3689 |
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3690 static void test_is_available_overflow() { |
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3691 // Reserve some memory. |
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3692 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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3693 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3694 |
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3695 // Commit some memory. |
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3696 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3697 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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3698 assert(expanded, "Failed to commit"); |
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3699 |
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3700 // Calculate a size that will overflow the virtual space size. |
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3701 void* virtual_space_max = (void*)(uintptr_t)-1; |
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3702 size_t bottom_to_max = pointer_delta(virtual_space_max, vsn.bottom(), 1); |
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3703 size_t overflow_size = bottom_to_max + BytesPerWord; |
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3704 size_t overflow_word_size = overflow_size / BytesPerWord; |
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3705 |
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3706 // Check that is_available can handle the overflow. |
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3707 assert_is_available_negative(overflow_word_size); |
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3708 } |
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3709 |
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3710 static void test_is_available() { |
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3711 TestVirtualSpaceNodeTest::test_is_available_positive(); |
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3712 TestVirtualSpaceNodeTest::test_is_available_negative(); |
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3713 TestVirtualSpaceNodeTest::test_is_available_overflow(); |
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3714 } |
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3715 }; |
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3716 |
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3717 void TestVirtualSpaceNode_test() { |
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3718 TestVirtualSpaceNodeTest::test(); |
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3719 TestVirtualSpaceNodeTest::test_is_available(); |
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3720 } |
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3721 |
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3722 #endif |