Mercurial > hg > graal-compiler
annotate src/share/vm/memory/metaspace.cpp @ 17769:bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
Reviewed-by: jmasa, stefank
author | ehelin |
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date | Fri, 21 Mar 2014 10:20:00 +0100 |
parents | daef39043d2c |
children | 5af31f70a866 |
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/metaspaceGCThresholdUpdater.hpp" |
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36 #include "memory/metaspaceShared.hpp" |
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37 #include "memory/metaspaceTracer.hpp" |
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38 #include "memory/resourceArea.hpp" |
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39 #include "memory/universe.hpp" |
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40 #include "runtime/atomic.inline.hpp" |
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41 #include "runtime/globals.hpp" |
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42 #include "runtime/init.hpp" |
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43 #include "runtime/java.hpp" |
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44 #include "runtime/mutex.hpp" |
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45 #include "runtime/orderAccess.hpp" |
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46 #include "services/memTracker.hpp" |
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47 #include "services/memoryService.hpp" |
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48 #include "utilities/copy.hpp" |
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49 #include "utilities/debug.hpp" |
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50 |
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51 typedef BinaryTreeDictionary<Metablock, FreeList<Metablock> > BlockTreeDictionary; |
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52 typedef BinaryTreeDictionary<Metachunk, FreeList<Metachunk> > ChunkTreeDictionary; |
12902 | 53 |
54 // Set this constant to enable slow integrity checking of the free chunk lists | |
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55 const bool metaspace_slow_verify = false; |
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56 |
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57 size_t const allocation_from_dictionary_limit = 4 * K; |
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58 |
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59 MetaWord* last_allocated = 0; |
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60 |
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61 size_t Metaspace::_compressed_class_space_size; |
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62 const MetaspaceTracer* Metaspace::_tracer = NULL; |
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63 |
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64 // Used in declarations in SpaceManager and ChunkManager |
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65 enum ChunkIndex { |
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66 ZeroIndex = 0, |
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67 SpecializedIndex = ZeroIndex, |
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68 SmallIndex = SpecializedIndex + 1, |
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69 MediumIndex = SmallIndex + 1, |
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70 HumongousIndex = MediumIndex + 1, |
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71 NumberOfFreeLists = 3, |
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72 NumberOfInUseLists = 4 |
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73 }; |
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74 |
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75 enum ChunkSizes { // in words. |
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76 ClassSpecializedChunk = 128, |
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77 SpecializedChunk = 128, |
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78 ClassSmallChunk = 256, |
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79 SmallChunk = 512, |
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80 ClassMediumChunk = 4 * K, |
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81 MediumChunk = 8 * K |
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82 }; |
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83 |
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84 static ChunkIndex next_chunk_index(ChunkIndex i) { |
6885 | 85 assert(i < NumberOfInUseLists, "Out of bound"); |
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86 return (ChunkIndex) (i+1); |
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87 } |
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88 |
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89 volatile intptr_t MetaspaceGC::_capacity_until_GC = 0; |
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90 uint MetaspaceGC::_shrink_factor = 0; |
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91 bool MetaspaceGC::_should_concurrent_collect = false; |
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92 |
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93 typedef class FreeList<Metachunk> ChunkList; |
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94 |
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95 // Manages the global free lists of chunks. |
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96 class ChunkManager : public CHeapObj<mtInternal> { |
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97 friend class TestVirtualSpaceNodeTest; |
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98 |
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99 // Free list of chunks of different sizes. |
10175 | 100 // SpecializedChunk |
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101 // SmallChunk |
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102 // MediumChunk |
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103 // HumongousChunk |
6885 | 104 ChunkList _free_chunks[NumberOfFreeLists]; |
105 | |
106 // HumongousChunk | |
107 ChunkTreeDictionary _humongous_dictionary; | |
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108 |
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109 // ChunkManager in all lists of this type |
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110 size_t _free_chunks_total; |
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111 size_t _free_chunks_count; |
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112 |
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113 void dec_free_chunks_total(size_t v) { |
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114 assert(_free_chunks_count > 0 && |
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115 _free_chunks_total > 0, |
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116 "About to go negative"); |
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117 Atomic::add_ptr(-1, &_free_chunks_count); |
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118 jlong minus_v = (jlong) - (jlong) v; |
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119 Atomic::add_ptr(minus_v, &_free_chunks_total); |
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120 } |
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121 |
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122 // Debug support |
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123 |
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124 size_t sum_free_chunks(); |
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125 size_t sum_free_chunks_count(); |
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126 |
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127 void locked_verify_free_chunks_total(); |
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128 void slow_locked_verify_free_chunks_total() { |
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129 if (metaspace_slow_verify) { |
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130 locked_verify_free_chunks_total(); |
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131 } |
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132 } |
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133 void locked_verify_free_chunks_count(); |
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134 void slow_locked_verify_free_chunks_count() { |
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135 if (metaspace_slow_verify) { |
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136 locked_verify_free_chunks_count(); |
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137 } |
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138 } |
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139 void verify_free_chunks_count(); |
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140 |
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141 public: |
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142 |
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143 ChunkManager(size_t specialized_size, size_t small_size, size_t medium_size) |
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144 : _free_chunks_total(0), _free_chunks_count(0) { |
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145 _free_chunks[SpecializedIndex].set_size(specialized_size); |
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146 _free_chunks[SmallIndex].set_size(small_size); |
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147 _free_chunks[MediumIndex].set_size(medium_size); |
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148 } |
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149 |
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150 // add or delete (return) a chunk to the global freelist. |
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151 Metachunk* chunk_freelist_allocate(size_t word_size); |
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152 |
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153 // Map a size to a list index assuming that there are lists |
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154 // for special, small, medium, and humongous chunks. |
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155 static ChunkIndex list_index(size_t size); |
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156 |
10175 | 157 // Remove the chunk from its freelist. It is |
158 // expected to be on one of the _free_chunks[] lists. | |
159 void remove_chunk(Metachunk* chunk); | |
160 | |
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161 // Add the simple linked list of chunks to the freelist of chunks |
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162 // of type index. |
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163 void return_chunks(ChunkIndex index, Metachunk* chunks); |
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164 |
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165 // Total of the space in the free chunks list |
12235 | 166 size_t free_chunks_total_words(); |
167 size_t free_chunks_total_bytes(); | |
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168 |
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169 // Number of chunks in the free chunks list |
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170 size_t free_chunks_count(); |
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171 |
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172 void inc_free_chunks_total(size_t v, size_t count = 1) { |
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173 Atomic::add_ptr(count, &_free_chunks_count); |
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174 Atomic::add_ptr(v, &_free_chunks_total); |
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175 } |
6885 | 176 ChunkTreeDictionary* humongous_dictionary() { |
177 return &_humongous_dictionary; | |
178 } | |
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179 |
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180 ChunkList* free_chunks(ChunkIndex index); |
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181 |
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182 // Returns the list for the given chunk word size. |
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183 ChunkList* find_free_chunks_list(size_t word_size); |
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184 |
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185 // Remove from a list by size. Selects list based on size of chunk. |
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186 Metachunk* free_chunks_get(size_t chunk_word_size); |
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187 |
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188 // Debug support |
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189 void verify(); |
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190 void slow_verify() { |
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191 if (metaspace_slow_verify) { |
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192 verify(); |
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193 } |
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194 } |
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195 void locked_verify(); |
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196 void slow_locked_verify() { |
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197 if (metaspace_slow_verify) { |
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198 locked_verify(); |
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199 } |
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200 } |
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201 void verify_free_chunks_total(); |
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202 |
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203 void locked_print_free_chunks(outputStream* st); |
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204 void locked_print_sum_free_chunks(outputStream* st); |
6885 | 205 |
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206 void print_on(outputStream* st) const; |
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207 }; |
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208 |
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209 // Used to manage the free list of Metablocks (a block corresponds |
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210 // to the allocation of a quantum of metadata). |
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211 class BlockFreelist VALUE_OBJ_CLASS_SPEC { |
6885 | 212 BlockTreeDictionary* _dictionary; |
213 | |
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214 // Only allocate and split from freelist if the size of the allocation |
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215 // is at least 1/4th the size of the available block. |
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216 const static int WasteMultiplier = 4; |
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217 |
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218 // Accessors |
6885 | 219 BlockTreeDictionary* dictionary() const { return _dictionary; } |
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220 |
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221 public: |
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222 BlockFreelist(); |
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223 ~BlockFreelist(); |
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224 |
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225 // Get and return a block to the free list |
6885 | 226 MetaWord* get_block(size_t word_size); |
227 void return_block(MetaWord* p, size_t word_size); | |
228 | |
229 size_t total_size() { | |
230 if (dictionary() == NULL) { | |
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231 return 0; |
6885 | 232 } else { |
233 return dictionary()->total_size(); | |
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234 } |
6885 | 235 } |
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236 |
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237 void print_on(outputStream* st) const; |
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238 }; |
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239 |
12902 | 240 // A VirtualSpaceList node. |
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241 class VirtualSpaceNode : public CHeapObj<mtClass> { |
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242 friend class VirtualSpaceList; |
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243 |
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244 // Link to next VirtualSpaceNode |
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245 VirtualSpaceNode* _next; |
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246 |
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247 // total in the VirtualSpace |
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248 MemRegion _reserved; |
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249 ReservedSpace _rs; |
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250 VirtualSpace _virtual_space; |
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251 MetaWord* _top; |
10175 | 252 // count of chunks contained in this VirtualSpace |
253 uintx _container_count; | |
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254 |
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255 // Convenience functions to access the _virtual_space |
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256 char* low() const { return virtual_space()->low(); } |
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257 char* high() const { return virtual_space()->high(); } |
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258 |
10175 | 259 // The first Metachunk will be allocated at the bottom of the |
260 // VirtualSpace | |
261 Metachunk* first_chunk() { return (Metachunk*) bottom(); } | |
262 | |
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263 // Committed but unused space in the virtual space |
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264 size_t free_words_in_vs() const; |
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265 public: |
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266 |
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267 VirtualSpaceNode(size_t byte_size); |
10175 | 268 VirtualSpaceNode(ReservedSpace rs) : _top(NULL), _next(NULL), _rs(rs), _container_count(0) {} |
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269 ~VirtualSpaceNode(); |
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270 |
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271 // Convenience functions for logical bottom and end |
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272 MetaWord* bottom() const { return (MetaWord*) _virtual_space.low(); } |
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273 MetaWord* end() const { return (MetaWord*) _virtual_space.high(); } |
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274 |
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275 size_t reserved_words() const { return _virtual_space.reserved_size() / BytesPerWord; } |
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276 size_t committed_words() const { return _virtual_space.actual_committed_size() / BytesPerWord; } |
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277 |
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278 bool is_pre_committed() const { return _virtual_space.special(); } |
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279 |
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280 // address of next available space in _virtual_space; |
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281 // Accessors |
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282 VirtualSpaceNode* next() { return _next; } |
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283 void set_next(VirtualSpaceNode* v) { _next = v; } |
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284 |
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285 void set_reserved(MemRegion const v) { _reserved = v; } |
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286 void set_top(MetaWord* v) { _top = v; } |
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287 |
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288 // Accessors |
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289 MemRegion* reserved() { return &_reserved; } |
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290 VirtualSpace* virtual_space() const { return (VirtualSpace*) &_virtual_space; } |
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291 |
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292 // Returns true if "word_size" is available in the VirtualSpace |
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293 bool is_available(size_t word_size) { return word_size <= pointer_delta(end(), _top, sizeof(MetaWord)); } |
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294 |
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295 MetaWord* top() const { return _top; } |
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296 void inc_top(size_t word_size) { _top += word_size; } |
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297 |
10175 | 298 uintx container_count() { return _container_count; } |
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299 void inc_container_count(); |
10175 | 300 void dec_container_count(); |
301 #ifdef ASSERT | |
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302 uint container_count_slow(); |
10175 | 303 void verify_container_count(); |
304 #endif | |
305 | |
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306 // used and capacity in this single entry in the list |
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307 size_t used_words_in_vs() const; |
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308 size_t capacity_words_in_vs() const; |
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309 |
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310 bool initialize(); |
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311 |
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312 // get space from the virtual space |
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313 Metachunk* take_from_committed(size_t chunk_word_size); |
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314 |
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315 // Allocate a chunk from the virtual space and return it. |
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316 Metachunk* get_chunk_vs(size_t chunk_word_size); |
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317 |
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318 // Expands/shrinks the committed space in a virtual space. Delegates |
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319 // to Virtualspace |
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320 bool expand_by(size_t min_words, size_t preferred_words); |
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321 |
10175 | 322 // In preparation for deleting this node, remove all the chunks |
323 // in the node from any freelist. | |
324 void purge(ChunkManager* chunk_manager); | |
325 | |
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326 // If an allocation doesn't fit in the current node a new node is created. |
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327 // Allocate chunks out of the remaining committed space in this node |
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328 // to avoid wasting that memory. |
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329 // This always adds up because all the chunk sizes are multiples of |
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330 // the smallest chunk size. |
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331 void retire(ChunkManager* chunk_manager); |
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332 |
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333 #ifdef ASSERT |
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334 // Debug support |
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335 void mangle(); |
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336 #endif |
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337 |
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338 void print_on(outputStream* st) const; |
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339 }; |
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340 |
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341 #define assert_is_ptr_aligned(ptr, alignment) \ |
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342 assert(is_ptr_aligned(ptr, alignment), \ |
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343 err_msg(PTR_FORMAT " is not aligned to " \ |
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344 SIZE_FORMAT, ptr, alignment)) |
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345 |
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346 #define assert_is_size_aligned(size, alignment) \ |
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347 assert(is_size_aligned(size, alignment), \ |
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348 err_msg(SIZE_FORMAT " is not aligned to " \ |
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349 SIZE_FORMAT, size, alignment)) |
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350 |
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351 |
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352 // Decide if large pages should be committed when the memory is reserved. |
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353 static bool should_commit_large_pages_when_reserving(size_t bytes) { |
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354 if (UseLargePages && UseLargePagesInMetaspace && !os::can_commit_large_page_memory()) { |
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355 size_t words = bytes / BytesPerWord; |
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356 bool is_class = false; // We never reserve large pages for the class space. |
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357 if (MetaspaceGC::can_expand(words, is_class) && |
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358 MetaspaceGC::allowed_expansion() >= words) { |
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359 return true; |
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360 } |
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361 } |
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362 |
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363 return false; |
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364 } |
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365 |
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366 // byte_size is the size of the associated virtualspace. |
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367 VirtualSpaceNode::VirtualSpaceNode(size_t bytes) : _top(NULL), _next(NULL), _rs(), _container_count(0) { |
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368 assert_is_size_aligned(bytes, Metaspace::reserve_alignment()); |
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369 |
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370 // This allocates memory with mmap. For DumpSharedspaces, try to reserve |
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371 // configurable address, generally at the top of the Java heap so other |
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372 // memory addresses don't conflict. |
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373 if (DumpSharedSpaces) { |
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374 bool large_pages = false; // No large pages when dumping the CDS archive. |
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375 char* shared_base = (char*)align_ptr_up((char*)SharedBaseAddress, Metaspace::reserve_alignment()); |
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376 |
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377 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages, shared_base, 0); |
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378 if (_rs.is_reserved()) { |
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379 assert(shared_base == 0 || _rs.base() == shared_base, "should match"); |
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380 } else { |
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381 // Get a mmap region anywhere if the SharedBaseAddress fails. |
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382 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages); |
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383 } |
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384 MetaspaceShared::set_shared_rs(&_rs); |
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385 } else { |
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386 bool large_pages = should_commit_large_pages_when_reserving(bytes); |
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387 |
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388 _rs = ReservedSpace(bytes, Metaspace::reserve_alignment(), large_pages); |
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389 } |
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390 |
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391 if (_rs.is_reserved()) { |
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392 assert(_rs.base() != NULL, "Catch if we get a NULL address"); |
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393 assert(_rs.size() != 0, "Catch if we get a 0 size"); |
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394 assert_is_ptr_aligned(_rs.base(), Metaspace::reserve_alignment()); |
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395 assert_is_size_aligned(_rs.size(), Metaspace::reserve_alignment()); |
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396 |
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397 MemTracker::record_virtual_memory_type((address)_rs.base(), mtClass); |
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398 } |
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399 } |
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400 |
10175 | 401 void VirtualSpaceNode::purge(ChunkManager* chunk_manager) { |
402 Metachunk* chunk = first_chunk(); | |
403 Metachunk* invalid_chunk = (Metachunk*) top(); | |
404 while (chunk < invalid_chunk ) { | |
12902 | 405 assert(chunk->is_tagged_free(), "Should be tagged free"); |
406 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
407 chunk_manager->remove_chunk(chunk); | |
408 assert(chunk->next() == NULL && | |
409 chunk->prev() == NULL, | |
410 "Was not removed from its list"); | |
411 chunk = (Metachunk*) next; | |
10175 | 412 } |
413 } | |
414 | |
415 #ifdef ASSERT | |
416 uint VirtualSpaceNode::container_count_slow() { | |
417 uint count = 0; | |
418 Metachunk* chunk = first_chunk(); | |
419 Metachunk* invalid_chunk = (Metachunk*) top(); | |
420 while (chunk < invalid_chunk ) { | |
421 MetaWord* next = ((MetaWord*)chunk) + chunk->word_size(); | |
422 // Don't count the chunks on the free lists. Those are | |
423 // still part of the VirtualSpaceNode but not currently | |
424 // counted. | |
12902 | 425 if (!chunk->is_tagged_free()) { |
10175 | 426 count++; |
427 } | |
428 chunk = (Metachunk*) next; | |
429 } | |
430 return count; | |
431 } | |
432 #endif | |
433 | |
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434 // List of VirtualSpaces for metadata allocation. |
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435 class VirtualSpaceList : public CHeapObj<mtClass> { |
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436 friend class VirtualSpaceNode; |
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437 |
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438 enum VirtualSpaceSizes { |
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439 VirtualSpaceSize = 256 * K |
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440 }; |
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441 |
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442 // Head of the list |
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443 VirtualSpaceNode* _virtual_space_list; |
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444 // virtual space currently being used for allocations |
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445 VirtualSpaceNode* _current_virtual_space; |
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446 |
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447 // Is this VirtualSpaceList used for the compressed class space |
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448 bool _is_class; |
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449 |
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450 // Sum of reserved and committed memory in the virtual spaces |
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451 size_t _reserved_words; |
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452 size_t _committed_words; |
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453 |
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454 // Number of virtual spaces |
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455 size_t _virtual_space_count; |
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456 |
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457 ~VirtualSpaceList(); |
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458 |
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459 VirtualSpaceNode* virtual_space_list() const { return _virtual_space_list; } |
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460 |
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461 void set_virtual_space_list(VirtualSpaceNode* v) { |
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462 _virtual_space_list = v; |
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463 } |
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464 void set_current_virtual_space(VirtualSpaceNode* v) { |
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465 _current_virtual_space = v; |
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466 } |
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467 |
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468 void link_vs(VirtualSpaceNode* new_entry); |
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469 |
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470 // Get another virtual space and add it to the list. This |
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471 // is typically prompted by a failed attempt to allocate a chunk |
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472 // and is typically followed by the allocation of a chunk. |
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473 bool create_new_virtual_space(size_t vs_word_size); |
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474 |
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475 // Chunk up the unused committed space in the current |
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476 // virtual space and add the chunks to the free list. |
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477 void retire_current_virtual_space(); |
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478 |
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479 public: |
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480 VirtualSpaceList(size_t word_size); |
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481 VirtualSpaceList(ReservedSpace rs); |
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482 |
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483 size_t free_bytes(); |
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484 |
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485 Metachunk* get_new_chunk(size_t word_size, |
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486 size_t grow_chunks_by_words, |
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487 size_t medium_chunk_bunch); |
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488 |
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489 bool expand_node_by(VirtualSpaceNode* node, |
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490 size_t min_words, |
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491 size_t preferred_words); |
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492 |
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493 bool expand_by(size_t min_words, |
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494 size_t preferred_words); |
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495 |
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496 VirtualSpaceNode* current_virtual_space() { |
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497 return _current_virtual_space; |
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498 } |
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499 |
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500 bool is_class() const { return _is_class; } |
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501 |
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502 bool initialization_succeeded() { return _virtual_space_list != NULL; } |
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503 |
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504 size_t reserved_words() { return _reserved_words; } |
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505 size_t reserved_bytes() { return reserved_words() * BytesPerWord; } |
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506 size_t committed_words() { return _committed_words; } |
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507 size_t committed_bytes() { return committed_words() * BytesPerWord; } |
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508 |
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509 void inc_reserved_words(size_t v); |
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510 void dec_reserved_words(size_t v); |
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511 void inc_committed_words(size_t v); |
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512 void dec_committed_words(size_t v); |
10175 | 513 void inc_virtual_space_count(); |
514 void dec_virtual_space_count(); | |
515 | |
516 // Unlink empty VirtualSpaceNodes and free it. | |
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517 void purge(ChunkManager* chunk_manager); |
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518 |
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519 void print_on(outputStream* st) const; |
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520 |
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521 class VirtualSpaceListIterator : public StackObj { |
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522 VirtualSpaceNode* _virtual_spaces; |
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523 public: |
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524 VirtualSpaceListIterator(VirtualSpaceNode* virtual_spaces) : |
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525 _virtual_spaces(virtual_spaces) {} |
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526 |
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527 bool repeat() { |
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528 return _virtual_spaces != NULL; |
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529 } |
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530 |
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531 VirtualSpaceNode* get_next() { |
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532 VirtualSpaceNode* result = _virtual_spaces; |
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533 if (_virtual_spaces != NULL) { |
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534 _virtual_spaces = _virtual_spaces->next(); |
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535 } |
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536 return result; |
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537 } |
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538 }; |
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539 }; |
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540 |
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541 class Metadebug : AllStatic { |
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542 // Debugging support for Metaspaces |
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543 static int _allocation_fail_alot_count; |
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544 |
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545 public: |
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546 |
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547 static void init_allocation_fail_alot_count(); |
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548 #ifdef ASSERT |
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549 static bool test_metadata_failure(); |
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550 #endif |
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551 }; |
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552 |
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553 int Metadebug::_allocation_fail_alot_count = 0; |
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554 |
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555 // SpaceManager - used by Metaspace to handle allocations |
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556 class SpaceManager : public CHeapObj<mtClass> { |
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557 friend class Metaspace; |
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558 friend class Metadebug; |
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559 |
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560 private: |
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561 |
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562 // protects allocations |
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563 Mutex* const _lock; |
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564 |
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565 // Type of metadata allocated. |
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566 Metaspace::MetadataType _mdtype; |
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567 |
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568 // List of chunks in use by this SpaceManager. Allocations |
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569 // are done from the current chunk. The list is used for deallocating |
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570 // chunks when the SpaceManager is freed. |
6885 | 571 Metachunk* _chunks_in_use[NumberOfInUseLists]; |
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572 Metachunk* _current_chunk; |
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573 |
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574 // Number of small chunks to allocate to a manager |
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575 // If class space manager, small chunks are unlimited |
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576 static uint const _small_chunk_limit; |
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577 |
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578 // Sum of all space in allocated chunks |
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579 size_t _allocated_blocks_words; |
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580 |
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581 // Sum of all allocated chunks |
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582 size_t _allocated_chunks_words; |
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583 size_t _allocated_chunks_count; |
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584 |
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585 // Free lists of blocks are per SpaceManager since they |
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586 // are assumed to be in chunks in use by the SpaceManager |
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587 // and all chunks in use by a SpaceManager are freed when |
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588 // the class loader using the SpaceManager is collected. |
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589 BlockFreelist _block_freelists; |
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590 |
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591 // protects virtualspace and chunk expansions |
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592 static const char* _expand_lock_name; |
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593 static const int _expand_lock_rank; |
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594 static Mutex* const _expand_lock; |
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595 |
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596 private: |
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597 // Accessors |
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598 Metachunk* chunks_in_use(ChunkIndex index) const { return _chunks_in_use[index]; } |
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599 void set_chunks_in_use(ChunkIndex index, Metachunk* v) { |
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600 // ensure lock-free iteration sees fully initialized node |
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601 OrderAccess::storestore(); |
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602 _chunks_in_use[index] = v; |
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603 } |
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604 |
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605 BlockFreelist* block_freelists() const { |
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606 return (BlockFreelist*) &_block_freelists; |
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607 } |
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608 |
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609 Metaspace::MetadataType mdtype() { return _mdtype; } |
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610 |
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611 VirtualSpaceList* vs_list() const { return Metaspace::get_space_list(_mdtype); } |
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612 ChunkManager* chunk_manager() const { return Metaspace::get_chunk_manager(_mdtype); } |
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613 |
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614 Metachunk* current_chunk() const { return _current_chunk; } |
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615 void set_current_chunk(Metachunk* v) { |
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616 _current_chunk = v; |
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617 } |
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618 |
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619 Metachunk* find_current_chunk(size_t word_size); |
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620 |
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621 // Add chunk to the list of chunks in use |
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622 void add_chunk(Metachunk* v, bool make_current); |
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623 void retire_current_chunk(); |
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624 |
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625 Mutex* lock() const { return _lock; } |
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626 |
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627 const char* chunk_size_name(ChunkIndex index) const; |
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628 |
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629 protected: |
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630 void initialize(); |
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631 |
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632 public: |
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633 SpaceManager(Metaspace::MetadataType mdtype, |
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634 Mutex* lock); |
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635 ~SpaceManager(); |
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636 |
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637 enum ChunkMultiples { |
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638 MediumChunkMultiple = 4 |
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639 }; |
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640 |
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641 bool is_class() { return _mdtype == Metaspace::ClassType; } |
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642 |
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643 // Accessors |
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644 size_t specialized_chunk_size() { return (size_t) is_class() ? ClassSpecializedChunk : SpecializedChunk; } |
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645 size_t small_chunk_size() { return (size_t) is_class() ? ClassSmallChunk : SmallChunk; } |
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646 size_t medium_chunk_size() { return (size_t) is_class() ? ClassMediumChunk : MediumChunk; } |
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647 size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; } |
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648 |
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649 size_t smallest_chunk_size() { return specialized_chunk_size(); } |
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650 |
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651 size_t allocated_blocks_words() const { return _allocated_blocks_words; } |
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652 size_t allocated_blocks_bytes() const { return _allocated_blocks_words * BytesPerWord; } |
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653 size_t allocated_chunks_words() const { return _allocated_chunks_words; } |
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654 size_t allocated_chunks_count() const { return _allocated_chunks_count; } |
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655 |
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656 bool is_humongous(size_t word_size) { return word_size > medium_chunk_size(); } |
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657 |
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658 static Mutex* expand_lock() { return _expand_lock; } |
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659 |
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660 // Increment the per Metaspace and global running sums for Metachunks |
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661 // by the given size. This is used when a Metachunk to added to |
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662 // the in-use list. |
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663 void inc_size_metrics(size_t words); |
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664 // Increment the per Metaspace and global running sums Metablocks by the given |
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665 // size. This is used when a Metablock is allocated. |
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666 void inc_used_metrics(size_t words); |
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667 // Delete the portion of the running sums for this SpaceManager. That is, |
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668 // the globals running sums for the Metachunks and Metablocks are |
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669 // decremented for all the Metachunks in-use by this SpaceManager. |
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670 void dec_total_from_size_metrics(); |
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671 |
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672 // Set the sizes for the initial chunks. |
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673 void get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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674 size_t* chunk_word_size, |
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675 size_t* class_chunk_word_size); |
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676 |
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677 size_t sum_capacity_in_chunks_in_use() const; |
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678 size_t sum_used_in_chunks_in_use() const; |
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679 size_t sum_free_in_chunks_in_use() const; |
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680 size_t sum_waste_in_chunks_in_use() const; |
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681 size_t sum_waste_in_chunks_in_use(ChunkIndex index ) const; |
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682 |
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683 size_t sum_count_in_chunks_in_use(); |
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684 size_t sum_count_in_chunks_in_use(ChunkIndex i); |
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685 |
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686 Metachunk* get_new_chunk(size_t word_size, size_t grow_chunks_by_words); |
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687 |
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688 // Block allocation and deallocation. |
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689 // Allocates a block from the current chunk |
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690 MetaWord* allocate(size_t word_size); |
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691 |
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692 // Helper for allocations |
6885 | 693 MetaWord* allocate_work(size_t word_size); |
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694 |
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695 // Returns a block to the per manager freelist |
6885 | 696 void deallocate(MetaWord* p, size_t word_size); |
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697 |
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698 // Based on the allocation size and a minimum chunk size, |
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699 // returned chunk size (for expanding space for chunk allocation). |
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700 size_t calc_chunk_size(size_t allocation_word_size); |
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701 |
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702 // Called when an allocation from the current chunk fails. |
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703 // Gets a new chunk (may require getting a new virtual space), |
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704 // and allocates from that chunk. |
6885 | 705 MetaWord* grow_and_allocate(size_t word_size); |
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706 |
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707 // Notify memory usage to MemoryService. |
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708 void track_metaspace_memory_usage(); |
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709 |
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710 // debugging support. |
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711 |
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712 void dump(outputStream* const out) const; |
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713 void print_on(outputStream* st) const; |
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714 void locked_print_chunks_in_use_on(outputStream* st) const; |
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715 |
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716 bool contains(const void *ptr); |
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717 |
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718 void verify(); |
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719 void verify_chunk_size(Metachunk* chunk); |
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720 NOT_PRODUCT(void mangle_freed_chunks();) |
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721 #ifdef ASSERT |
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722 void verify_allocated_blocks_words(); |
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723 #endif |
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724 |
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725 size_t get_raw_word_size(size_t word_size) { |
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726 size_t byte_size = word_size * BytesPerWord; |
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727 |
12902 | 728 size_t raw_bytes_size = MAX2(byte_size, sizeof(Metablock)); |
729 raw_bytes_size = align_size_up(raw_bytes_size, Metachunk::object_alignment()); | |
730 | |
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731 size_t raw_word_size = raw_bytes_size / BytesPerWord; |
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732 assert(raw_word_size * BytesPerWord == raw_bytes_size, "Size problem"); |
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733 |
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734 return raw_word_size; |
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735 } |
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736 }; |
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737 |
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738 uint const SpaceManager::_small_chunk_limit = 4; |
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739 |
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740 const char* SpaceManager::_expand_lock_name = |
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741 "SpaceManager chunk allocation lock"; |
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742 const int SpaceManager::_expand_lock_rank = Monitor::leaf - 1; |
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743 Mutex* const SpaceManager::_expand_lock = |
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744 new Mutex(SpaceManager::_expand_lock_rank, |
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745 SpaceManager::_expand_lock_name, |
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746 Mutex::_allow_vm_block_flag); |
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747 |
10175 | 748 void VirtualSpaceNode::inc_container_count() { |
749 assert_lock_strong(SpaceManager::expand_lock()); | |
750 _container_count++; | |
751 assert(_container_count == container_count_slow(), | |
752 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
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753 " container_count_slow() " SIZE_FORMAT, |
10175 | 754 _container_count, container_count_slow())); |
755 } | |
756 | |
757 void VirtualSpaceNode::dec_container_count() { | |
758 assert_lock_strong(SpaceManager::expand_lock()); | |
759 _container_count--; | |
760 } | |
761 | |
762 #ifdef ASSERT | |
763 void VirtualSpaceNode::verify_container_count() { | |
764 assert(_container_count == container_count_slow(), | |
765 err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT | |
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766 " container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow())); |
10175 | 767 } |
768 #endif | |
769 | |
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770 // BlockFreelist methods |
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771 |
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772 BlockFreelist::BlockFreelist() : _dictionary(NULL) {} |
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773 |
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774 BlockFreelist::~BlockFreelist() { |
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775 if (_dictionary != NULL) { |
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776 if (Verbose && TraceMetadataChunkAllocation) { |
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777 _dictionary->print_free_lists(gclog_or_tty); |
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778 } |
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779 delete _dictionary; |
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780 } |
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781 } |
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782 |
6885 | 783 void BlockFreelist::return_block(MetaWord* p, size_t word_size) { |
12902 | 784 Metablock* free_chunk = ::new (p) Metablock(word_size); |
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785 if (dictionary() == NULL) { |
6885 | 786 _dictionary = new BlockTreeDictionary(); |
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787 } |
6885 | 788 dictionary()->return_chunk(free_chunk); |
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789 } |
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790 |
6885 | 791 MetaWord* BlockFreelist::get_block(size_t word_size) { |
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792 if (dictionary() == NULL) { |
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793 return NULL; |
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794 } |
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795 |
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796 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 797 // Dark matter. Too small for dictionary. |
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798 return NULL; |
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799 } |
6885 | 800 |
801 Metablock* free_block = | |
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802 dictionary()->get_chunk(word_size, FreeBlockDictionary<Metablock>::atLeast); |
6885 | 803 if (free_block == NULL) { |
804 return NULL; | |
805 } | |
806 | |
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807 const size_t block_size = free_block->size(); |
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808 if (block_size > WasteMultiplier * word_size) { |
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809 return_block((MetaWord*)free_block, block_size); |
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810 return NULL; |
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811 } |
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812 |
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813 MetaWord* new_block = (MetaWord*)free_block; |
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814 assert(block_size >= word_size, "Incorrect size of block from freelist"); |
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815 const size_t unused = block_size - word_size; |
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816 if (unused >= TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
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817 return_block(new_block + word_size, unused); |
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818 } |
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819 |
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820 return new_block; |
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821 } |
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822 |
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823 void BlockFreelist::print_on(outputStream* st) const { |
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824 if (dictionary() == NULL) { |
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825 return; |
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826 } |
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827 dictionary()->print_free_lists(st); |
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828 } |
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829 |
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830 // VirtualSpaceNode methods |
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831 |
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832 VirtualSpaceNode::~VirtualSpaceNode() { |
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833 _rs.release(); |
10175 | 834 #ifdef ASSERT |
835 size_t word_size = sizeof(*this) / BytesPerWord; | |
836 Copy::fill_to_words((HeapWord*) this, word_size, 0xf1f1f1f1); | |
837 #endif | |
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838 } |
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839 |
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840 size_t VirtualSpaceNode::used_words_in_vs() const { |
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841 return pointer_delta(top(), bottom(), sizeof(MetaWord)); |
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842 } |
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843 |
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844 // Space committed in the VirtualSpace |
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845 size_t VirtualSpaceNode::capacity_words_in_vs() const { |
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846 return pointer_delta(end(), bottom(), sizeof(MetaWord)); |
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847 } |
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848 |
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849 size_t VirtualSpaceNode::free_words_in_vs() const { |
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850 return pointer_delta(end(), top(), sizeof(MetaWord)); |
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851 } |
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852 |
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853 // Allocates the chunk from the virtual space only. |
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854 // This interface is also used internally for debugging. Not all |
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855 // chunks removed here are necessarily used for allocation. |
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856 Metachunk* VirtualSpaceNode::take_from_committed(size_t chunk_word_size) { |
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857 // Bottom of the new chunk |
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858 MetaWord* chunk_limit = top(); |
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859 assert(chunk_limit != NULL, "Not safe to call this method"); |
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860 |
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861 // The virtual spaces are always expanded by the |
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862 // commit granularity to enforce the following condition. |
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863 // Without this the is_available check will not work correctly. |
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864 assert(_virtual_space.committed_size() == _virtual_space.actual_committed_size(), |
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865 "The committed memory doesn't match the expanded memory."); |
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866 |
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867 if (!is_available(chunk_word_size)) { |
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868 if (TraceMetadataChunkAllocation) { |
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869 gclog_or_tty->print("VirtualSpaceNode::take_from_committed() not available %d words ", chunk_word_size); |
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870 // Dump some information about the virtual space that is nearly full |
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871 print_on(gclog_or_tty); |
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872 } |
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873 return NULL; |
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874 } |
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875 |
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876 // Take the space (bump top on the current virtual space). |
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877 inc_top(chunk_word_size); |
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878 |
10175 | 879 // Initialize the chunk |
880 Metachunk* result = ::new (chunk_limit) Metachunk(chunk_word_size, this); | |
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881 return result; |
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882 } |
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883 |
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884 |
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885 // Expand the virtual space (commit more of the reserved space) |
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886 bool VirtualSpaceNode::expand_by(size_t min_words, size_t preferred_words) { |
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887 size_t min_bytes = min_words * BytesPerWord; |
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888 size_t preferred_bytes = preferred_words * BytesPerWord; |
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889 |
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890 size_t uncommitted = virtual_space()->reserved_size() - virtual_space()->actual_committed_size(); |
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891 |
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892 if (uncommitted < min_bytes) { |
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893 return false; |
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894 } |
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895 |
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896 size_t commit = MIN2(preferred_bytes, uncommitted); |
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897 bool result = virtual_space()->expand_by(commit, false); |
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898 |
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899 assert(result, "Failed to commit memory"); |
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900 |
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901 return result; |
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902 } |
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903 |
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904 Metachunk* VirtualSpaceNode::get_chunk_vs(size_t chunk_word_size) { |
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905 assert_lock_strong(SpaceManager::expand_lock()); |
10175 | 906 Metachunk* result = take_from_committed(chunk_word_size); |
907 if (result != NULL) { | |
908 inc_container_count(); | |
909 } | |
910 return result; | |
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911 } |
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912 |
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913 bool VirtualSpaceNode::initialize() { |
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914 |
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915 if (!_rs.is_reserved()) { |
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916 return false; |
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917 } |
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918 |
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919 // These are necessary restriction to make sure that the virtual space always |
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920 // grows in steps of Metaspace::commit_alignment(). If both base and size are |
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921 // aligned only the middle alignment of the VirtualSpace is used. |
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922 assert_is_ptr_aligned(_rs.base(), Metaspace::commit_alignment()); |
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923 assert_is_size_aligned(_rs.size(), Metaspace::commit_alignment()); |
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924 |
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925 // ReservedSpaces marked as special will have the entire memory |
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926 // pre-committed. Setting a committed size will make sure that |
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927 // committed_size and actual_committed_size agrees. |
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928 size_t pre_committed_size = _rs.special() ? _rs.size() : 0; |
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929 |
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930 bool result = virtual_space()->initialize_with_granularity(_rs, pre_committed_size, |
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931 Metaspace::commit_alignment()); |
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932 if (result) { |
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933 assert(virtual_space()->committed_size() == virtual_space()->actual_committed_size(), |
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934 "Checking that the pre-committed memory was registered by the VirtualSpace"); |
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935 |
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936 set_top((MetaWord*)virtual_space()->low()); |
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937 set_reserved(MemRegion((HeapWord*)_rs.base(), |
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938 (HeapWord*)(_rs.base() + _rs.size()))); |
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939 |
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940 assert(reserved()->start() == (HeapWord*) _rs.base(), |
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941 err_msg("Reserved start was not set properly " PTR_FORMAT |
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942 " != " PTR_FORMAT, reserved()->start(), _rs.base())); |
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943 assert(reserved()->word_size() == _rs.size() / BytesPerWord, |
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944 err_msg("Reserved size was not set properly " SIZE_FORMAT |
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945 " != " SIZE_FORMAT, reserved()->word_size(), |
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946 _rs.size() / BytesPerWord)); |
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947 } |
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948 |
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949 return result; |
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950 } |
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951 |
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952 void VirtualSpaceNode::print_on(outputStream* st) const { |
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953 size_t used = used_words_in_vs(); |
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954 size_t capacity = capacity_words_in_vs(); |
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955 VirtualSpace* vs = virtual_space(); |
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956 st->print_cr(" space @ " PTR_FORMAT " " SIZE_FORMAT "K, %3d%% used " |
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957 "[" PTR_FORMAT ", " PTR_FORMAT ", " |
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958 PTR_FORMAT ", " PTR_FORMAT ")", |
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959 vs, capacity / K, |
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960 capacity == 0 ? 0 : used * 100 / capacity, |
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961 bottom(), top(), end(), |
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962 vs->high_boundary()); |
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963 } |
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964 |
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965 #ifdef ASSERT |
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966 void VirtualSpaceNode::mangle() { |
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967 size_t word_size = capacity_words_in_vs(); |
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968 Copy::fill_to_words((HeapWord*) low(), word_size, 0xf1f1f1f1); |
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969 } |
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970 #endif // ASSERT |
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971 |
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972 // VirtualSpaceList methods |
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973 // Space allocated from the VirtualSpace |
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974 |
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975 VirtualSpaceList::~VirtualSpaceList() { |
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976 VirtualSpaceListIterator iter(virtual_space_list()); |
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977 while (iter.repeat()) { |
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978 VirtualSpaceNode* vsl = iter.get_next(); |
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979 delete vsl; |
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980 } |
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981 } |
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982 |
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983 void VirtualSpaceList::inc_reserved_words(size_t v) { |
10175 | 984 assert_lock_strong(SpaceManager::expand_lock()); |
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985 _reserved_words = _reserved_words + v; |
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986 } |
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987 void VirtualSpaceList::dec_reserved_words(size_t v) { |
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988 assert_lock_strong(SpaceManager::expand_lock()); |
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989 _reserved_words = _reserved_words - v; |
10175 | 990 } |
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991 |
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992 #define assert_committed_below_limit() \ |
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993 assert(MetaspaceAux::committed_bytes() <= MaxMetaspaceSize, \ |
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994 err_msg("Too much committed memory. Committed: " SIZE_FORMAT \ |
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995 " limit (MaxMetaspaceSize): " SIZE_FORMAT, \ |
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996 MetaspaceAux::committed_bytes(), MaxMetaspaceSize)); |
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997 |
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998 void VirtualSpaceList::inc_committed_words(size_t v) { |
10175 | 999 assert_lock_strong(SpaceManager::expand_lock()); |
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1000 _committed_words = _committed_words + v; |
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1001 |
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1002 assert_committed_below_limit(); |
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1003 } |
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1004 void VirtualSpaceList::dec_committed_words(size_t v) { |
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1005 assert_lock_strong(SpaceManager::expand_lock()); |
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1006 _committed_words = _committed_words - v; |
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1007 |
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1008 assert_committed_below_limit(); |
10175 | 1009 } |
1010 | |
1011 void VirtualSpaceList::inc_virtual_space_count() { | |
1012 assert_lock_strong(SpaceManager::expand_lock()); | |
1013 _virtual_space_count++; | |
1014 } | |
1015 void VirtualSpaceList::dec_virtual_space_count() { | |
1016 assert_lock_strong(SpaceManager::expand_lock()); | |
1017 _virtual_space_count--; | |
1018 } | |
1019 | |
1020 void ChunkManager::remove_chunk(Metachunk* chunk) { | |
1021 size_t word_size = chunk->word_size(); | |
1022 ChunkIndex index = list_index(word_size); | |
1023 if (index != HumongousIndex) { | |
1024 free_chunks(index)->remove_chunk(chunk); | |
1025 } else { | |
1026 humongous_dictionary()->remove_chunk(chunk); | |
1027 } | |
1028 | |
1029 // Chunk is being removed from the chunks free list. | |
12902 | 1030 dec_free_chunks_total(chunk->word_size()); |
10175 | 1031 } |
1032 | |
1033 // Walk the list of VirtualSpaceNodes and delete | |
1034 // nodes with a 0 container_count. Remove Metachunks in | |
1035 // the node from their respective freelists. | |
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1036 void VirtualSpaceList::purge(ChunkManager* chunk_manager) { |
10175 | 1037 assert_lock_strong(SpaceManager::expand_lock()); |
1038 // Don't use a VirtualSpaceListIterator because this | |
1039 // list is being changed and a straightforward use of an iterator is not safe. | |
1040 VirtualSpaceNode* purged_vsl = NULL; | |
1041 VirtualSpaceNode* prev_vsl = virtual_space_list(); | |
1042 VirtualSpaceNode* next_vsl = prev_vsl; | |
1043 while (next_vsl != NULL) { | |
1044 VirtualSpaceNode* vsl = next_vsl; | |
1045 next_vsl = vsl->next(); | |
1046 // Don't free the current virtual space since it will likely | |
1047 // be needed soon. | |
1048 if (vsl->container_count() == 0 && vsl != current_virtual_space()) { | |
1049 // Unlink it from the list | |
1050 if (prev_vsl == vsl) { | |
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1051 // This is the case of the current node being the first node. |
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1052 assert(vsl == virtual_space_list(), "Expected to be the first node"); |
10175 | 1053 set_virtual_space_list(vsl->next()); |
1054 } else { | |
1055 prev_vsl->set_next(vsl->next()); | |
1056 } | |
1057 | |
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1058 vsl->purge(chunk_manager); |
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1059 dec_reserved_words(vsl->reserved_words()); |
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1060 dec_committed_words(vsl->committed_words()); |
10175 | 1061 dec_virtual_space_count(); |
1062 purged_vsl = vsl; | |
1063 delete vsl; | |
1064 } else { | |
1065 prev_vsl = vsl; | |
1066 } | |
1067 } | |
1068 #ifdef ASSERT | |
1069 if (purged_vsl != NULL) { | |
1070 // List should be stable enough to use an iterator here. | |
1071 VirtualSpaceListIterator iter(virtual_space_list()); | |
1072 while (iter.repeat()) { | |
1073 VirtualSpaceNode* vsl = iter.get_next(); | |
1074 assert(vsl != purged_vsl, "Purge of vsl failed"); | |
1075 } | |
1076 } | |
1077 #endif | |
1078 } | |
1079 | |
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1080 void VirtualSpaceList::retire_current_virtual_space() { |
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1081 assert_lock_strong(SpaceManager::expand_lock()); |
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1082 |
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1083 VirtualSpaceNode* vsn = current_virtual_space(); |
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1084 |
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1085 ChunkManager* cm = is_class() ? Metaspace::chunk_manager_class() : |
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1086 Metaspace::chunk_manager_metadata(); |
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1087 |
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1088 vsn->retire(cm); |
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1089 } |
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1090 |
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1091 void VirtualSpaceNode::retire(ChunkManager* chunk_manager) { |
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1092 for (int i = (int)MediumIndex; i >= (int)ZeroIndex; --i) { |
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1093 ChunkIndex index = (ChunkIndex)i; |
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1094 size_t chunk_size = chunk_manager->free_chunks(index)->size(); |
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1095 |
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1096 while (free_words_in_vs() >= chunk_size) { |
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1097 DEBUG_ONLY(verify_container_count();) |
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1098 Metachunk* chunk = get_chunk_vs(chunk_size); |
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1099 assert(chunk != NULL, "allocation should have been successful"); |
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1100 |
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1101 chunk_manager->return_chunks(index, chunk); |
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1102 chunk_manager->inc_free_chunks_total(chunk_size); |
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1103 DEBUG_ONLY(verify_container_count();) |
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1104 } |
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1105 } |
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1106 assert(free_words_in_vs() == 0, "should be empty now"); |
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1107 } |
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1108 |
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1109 VirtualSpaceList::VirtualSpaceList(size_t word_size) : |
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1110 _is_class(false), |
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1111 _virtual_space_list(NULL), |
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1112 _current_virtual_space(NULL), |
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1113 _reserved_words(0), |
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1114 _committed_words(0), |
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1115 _virtual_space_count(0) { |
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1116 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1117 Mutex::_no_safepoint_check_flag); |
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1118 create_new_virtual_space(word_size); |
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1119 } |
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1120 |
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1121 VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) : |
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1122 _is_class(true), |
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1123 _virtual_space_list(NULL), |
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1124 _current_virtual_space(NULL), |
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1125 _reserved_words(0), |
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1126 _committed_words(0), |
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1127 _virtual_space_count(0) { |
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1128 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1129 Mutex::_no_safepoint_check_flag); |
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1130 VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs); |
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1131 bool succeeded = class_entry->initialize(); |
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1132 if (succeeded) { |
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1133 link_vs(class_entry); |
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1134 } |
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1135 } |
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1136 |
10183
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1137 size_t VirtualSpaceList::free_bytes() { |
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1138 return virtual_space_list()->free_words_in_vs() * BytesPerWord; |
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1139 } |
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1140 |
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1141 // Allocate another meta virtual space and add it to the list. |
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1142 bool VirtualSpaceList::create_new_virtual_space(size_t vs_word_size) { |
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1143 assert_lock_strong(SpaceManager::expand_lock()); |
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1144 |
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1145 if (is_class()) { |
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1146 assert(false, "We currently don't support more than one VirtualSpace for" |
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1147 " the compressed class space. The initialization of the" |
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1148 " CCS uses another code path and should not hit this path."); |
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1149 return false; |
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1150 } |
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1151 |
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1152 if (vs_word_size == 0) { |
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1153 assert(false, "vs_word_size should always be at least _reserve_alignment large."); |
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1154 return false; |
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1155 } |
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1156 |
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1157 // Reserve the space |
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1158 size_t vs_byte_size = vs_word_size * BytesPerWord; |
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1159 assert_is_size_aligned(vs_byte_size, Metaspace::reserve_alignment()); |
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1160 |
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1161 // Allocate the meta virtual space and initialize it. |
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1162 VirtualSpaceNode* new_entry = new VirtualSpaceNode(vs_byte_size); |
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1163 if (!new_entry->initialize()) { |
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1164 delete new_entry; |
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1165 return false; |
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1166 } else { |
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1167 assert(new_entry->reserved_words() == vs_word_size, |
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1168 "Reserved memory size differs from requested memory size"); |
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1169 link_vs(new_entry); |
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1170 return true; |
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1171 } |
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1172 } |
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1173 |
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1174 void VirtualSpaceList::link_vs(VirtualSpaceNode* new_entry) { |
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1175 if (virtual_space_list() == NULL) { |
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1176 set_virtual_space_list(new_entry); |
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1177 } else { |
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1178 current_virtual_space()->set_next(new_entry); |
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1179 } |
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1180 set_current_virtual_space(new_entry); |
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1181 inc_reserved_words(new_entry->reserved_words()); |
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1182 inc_committed_words(new_entry->committed_words()); |
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1183 inc_virtual_space_count(); |
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1184 #ifdef ASSERT |
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1185 new_entry->mangle(); |
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1186 #endif |
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1187 if (TraceMetavirtualspaceAllocation && Verbose) { |
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1188 VirtualSpaceNode* vsl = current_virtual_space(); |
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1189 vsl->print_on(gclog_or_tty); |
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1190 } |
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1191 } |
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1192 |
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1193 bool VirtualSpaceList::expand_node_by(VirtualSpaceNode* node, |
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1194 size_t min_words, |
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1195 size_t preferred_words) { |
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1196 size_t before = node->committed_words(); |
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1197 |
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1198 bool result = node->expand_by(min_words, preferred_words); |
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1199 |
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1200 size_t after = node->committed_words(); |
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1201 |
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1202 // after and before can be the same if the memory was pre-committed. |
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1203 assert(after >= before, "Inconsistency"); |
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1204 inc_committed_words(after - before); |
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1205 |
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1206 return result; |
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1207 } |
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1208 |
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1209 bool VirtualSpaceList::expand_by(size_t min_words, size_t preferred_words) { |
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1210 assert_is_size_aligned(min_words, Metaspace::commit_alignment_words()); |
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1211 assert_is_size_aligned(preferred_words, Metaspace::commit_alignment_words()); |
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1212 assert(min_words <= preferred_words, "Invalid arguments"); |
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1213 |
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1214 if (!MetaspaceGC::can_expand(min_words, this->is_class())) { |
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1215 return false; |
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1216 } |
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1217 |
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1218 size_t allowed_expansion_words = MetaspaceGC::allowed_expansion(); |
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1219 if (allowed_expansion_words < min_words) { |
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1220 return false; |
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1221 } |
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1222 |
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1223 size_t max_expansion_words = MIN2(preferred_words, allowed_expansion_words); |
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1224 |
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1225 // Commit more memory from the the current virtual space. |
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1226 bool vs_expanded = expand_node_by(current_virtual_space(), |
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1227 min_words, |
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1228 max_expansion_words); |
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1229 if (vs_expanded) { |
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1230 return true; |
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1231 } |
12979
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1232 retire_current_virtual_space(); |
12838
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1233 |
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1234 // Get another virtual space. |
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1235 size_t grow_vs_words = MAX2((size_t)VirtualSpaceSize, preferred_words); |
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1236 grow_vs_words = align_size_up(grow_vs_words, Metaspace::reserve_alignment_words()); |
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1237 |
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1238 if (create_new_virtual_space(grow_vs_words)) { |
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1239 if (current_virtual_space()->is_pre_committed()) { |
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1240 // The memory was pre-committed, so we are done here. |
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1241 assert(min_words <= current_virtual_space()->committed_words(), |
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1242 "The new VirtualSpace was pre-committed, so it" |
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1243 "should be large enough to fit the alloc request."); |
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1244 return true; |
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|
1245 } |
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1246 |
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1247 return expand_node_by(current_virtual_space(), |
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1248 min_words, |
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1249 max_expansion_words); |
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1250 } |
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|
1251 |
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1252 return false; |
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|
1253 } |
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1254 |
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1255 Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size, |
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1256 size_t grow_chunks_by_words, |
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1257 size_t medium_chunk_bunch) { |
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1258 |
12303
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1259 // Allocate a chunk out of the current virtual space. |
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1260 Metachunk* next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1261 |
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1262 if (next != NULL) { |
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1263 return next; |
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|
1264 } |
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1265 |
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1266 // The expand amount is currently only determined by the requested sizes |
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1267 // and not how much committed memory is left in the current virtual space. |
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1268 |
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1269 size_t min_word_size = align_size_up(grow_chunks_by_words, Metaspace::commit_alignment_words()); |
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1270 size_t preferred_word_size = align_size_up(medium_chunk_bunch, Metaspace::commit_alignment_words()); |
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1271 if (min_word_size >= preferred_word_size) { |
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1272 // Can happen when humongous chunks are allocated. |
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1273 preferred_word_size = min_word_size; |
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1274 } |
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1275 |
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1276 bool expanded = expand_by(min_word_size, preferred_word_size); |
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1277 if (expanded) { |
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1278 next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words); |
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1279 assert(next != NULL, "The allocation was expected to succeed after the expansion"); |
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1280 } |
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1281 |
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1282 return next; |
7446
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1283 } |
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1284 |
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|
1285 void VirtualSpaceList::print_on(outputStream* st) const { |
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1286 if (TraceMetadataChunkAllocation && Verbose) { |
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|
1287 VirtualSpaceListIterator iter(virtual_space_list()); |
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|
1288 while (iter.repeat()) { |
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|
1289 VirtualSpaceNode* node = iter.get_next(); |
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|
1290 node->print_on(st); |
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|
1291 } |
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|
1292 } |
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|
1293 } |
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|
1294 |
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|
1295 // MetaspaceGC methods |
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|
1296 |
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|
1297 // VM_CollectForMetadataAllocation is the vm operation used to GC. |
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1298 // Within the VM operation after the GC the attempt to allocate the metadata |
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1299 // should succeed. If the GC did not free enough space for the metaspace |
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1300 // allocation, the HWM is increased so that another virtualspace will be |
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1301 // allocated for the metadata. With perm gen the increase in the perm |
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1302 // gen had bounds, MinMetaspaceExpansion and MaxMetaspaceExpansion. The |
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1303 // metaspace policy uses those as the small and large steps for the HWM. |
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1304 // |
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1305 // After the GC the compute_new_size() for MetaspaceGC is called to |
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1306 // resize the capacity of the metaspaces. The current implementation |
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1307 // is based on the flags MinMetaspaceFreeRatio and MaxMetaspaceFreeRatio used |
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1308 // to resize the Java heap by some GC's. New flags can be implemented |
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1309 // if really needed. MinMetaspaceFreeRatio is used to calculate how much |
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1310 // free space is desirable in the metaspace capacity to decide how much |
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1311 // to increase the HWM. MaxMetaspaceFreeRatio is used to decide how much |
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1312 // free space is desirable in the metaspace capacity before decreasing |
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1313 // the HWM. |
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1314 |
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1315 // Calculate the amount to increase the high water mark (HWM). |
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1316 // Increase by a minimum amount (MinMetaspaceExpansion) so that |
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1317 // another expansion is not requested too soon. If that is not |
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1318 // enough to satisfy the allocation, increase by MaxMetaspaceExpansion. |
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1319 // If that is still not enough, expand by the size of the allocation |
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1320 // plus some. |
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1321 size_t MetaspaceGC::delta_capacity_until_GC(size_t bytes) { |
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1322 size_t min_delta = MinMetaspaceExpansion; |
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1323 size_t max_delta = MaxMetaspaceExpansion; |
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1324 size_t delta = align_size_up(bytes, Metaspace::commit_alignment()); |
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1325 |
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1326 if (delta <= min_delta) { |
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1327 delta = min_delta; |
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1328 } else if (delta <= max_delta) { |
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1329 // Don't want to hit the high water mark on the next |
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1330 // allocation so make the delta greater than just enough |
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1331 // for this allocation. |
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1332 delta = max_delta; |
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1333 } else { |
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1334 // This allocation is large but the next ones are probably not |
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1335 // so increase by the minimum. |
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1336 delta = delta + min_delta; |
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1337 } |
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1338 |
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1339 assert_is_size_aligned(delta, Metaspace::commit_alignment()); |
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1340 |
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1341 return delta; |
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1342 } |
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1343 |
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1344 size_t MetaspaceGC::capacity_until_GC() { |
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1345 size_t value = (size_t)OrderAccess::load_ptr_acquire(&_capacity_until_GC); |
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1346 assert(value >= MetaspaceSize, "Not initialied properly?"); |
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1347 return value; |
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1348 } |
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1349 |
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1350 size_t MetaspaceGC::inc_capacity_until_GC(size_t v) { |
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1351 assert_is_size_aligned(v, Metaspace::commit_alignment()); |
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1352 |
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1353 return (size_t)Atomic::add_ptr(v, &_capacity_until_GC); |
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1354 } |
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1355 |
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1356 size_t MetaspaceGC::dec_capacity_until_GC(size_t v) { |
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1357 assert_is_size_aligned(v, Metaspace::commit_alignment()); |
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1358 |
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1359 return (size_t)Atomic::add_ptr(-(intptr_t)v, &_capacity_until_GC); |
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1360 } |
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1361 |
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1362 bool MetaspaceGC::can_expand(size_t word_size, bool is_class) { |
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1363 // Check if the compressed class space is full. |
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1364 if (is_class && Metaspace::using_class_space()) { |
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1365 size_t class_committed = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
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1366 if (class_committed + word_size * BytesPerWord > CompressedClassSpaceSize) { |
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1367 return false; |
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1368 } |
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1369 } |
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1370 |
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1371 // Check if the user has imposed a limit on the metaspace memory. |
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1372 size_t committed_bytes = MetaspaceAux::committed_bytes(); |
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1373 if (committed_bytes + word_size * BytesPerWord > MaxMetaspaceSize) { |
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1374 return false; |
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1375 } |
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1376 |
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1377 return true; |
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1378 } |
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1379 |
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1380 size_t MetaspaceGC::allowed_expansion() { |
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1381 size_t committed_bytes = MetaspaceAux::committed_bytes(); |
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1382 |
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1383 size_t left_until_max = MaxMetaspaceSize - committed_bytes; |
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1384 |
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1385 // Always grant expansion if we are initiating the JVM, |
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1386 // or if the GC_locker is preventing GCs. |
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1387 if (!is_init_completed() || GC_locker::is_active_and_needs_gc()) { |
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1388 return left_until_max / BytesPerWord; |
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1389 } |
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1390 |
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1391 size_t capacity_until_gc = capacity_until_GC(); |
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1392 |
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1393 if (capacity_until_gc <= committed_bytes) { |
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1394 return 0; |
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1395 } |
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1396 |
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1397 size_t left_until_GC = capacity_until_gc - committed_bytes; |
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1398 size_t left_to_commit = MIN2(left_until_GC, left_until_max); |
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1399 |
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1400 return left_to_commit / BytesPerWord; |
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1401 } |
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1402 |
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1403 void MetaspaceGC::compute_new_size() { |
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1404 assert(_shrink_factor <= 100, "invalid shrink factor"); |
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1405 uint current_shrink_factor = _shrink_factor; |
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1406 _shrink_factor = 0; |
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1407 |
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1408 const size_t used_after_gc = MetaspaceAux::allocated_capacity_bytes(); |
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1409 const size_t capacity_until_GC = MetaspaceGC::capacity_until_GC(); |
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1410 |
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1411 const double minimum_free_percentage = MinMetaspaceFreeRatio / 100.0; |
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1412 const double maximum_used_percentage = 1.0 - minimum_free_percentage; |
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1413 |
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1414 const double min_tmp = used_after_gc / maximum_used_percentage; |
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1415 size_t minimum_desired_capacity = |
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1416 (size_t)MIN2(min_tmp, double(max_uintx)); |
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1417 // Don't shrink less than the initial generation size |
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1418 minimum_desired_capacity = MAX2(minimum_desired_capacity, |
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1419 MetaspaceSize); |
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1420 |
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1421 if (PrintGCDetails && Verbose) { |
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1422 gclog_or_tty->print_cr("\nMetaspaceGC::compute_new_size: "); |
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1423 gclog_or_tty->print_cr(" " |
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1424 " minimum_free_percentage: %6.2f" |
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1425 " maximum_used_percentage: %6.2f", |
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1426 minimum_free_percentage, |
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1427 maximum_used_percentage); |
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1428 gclog_or_tty->print_cr(" " |
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1429 " used_after_gc : %6.1fKB", |
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1430 used_after_gc / (double) K); |
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1431 } |
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1432 |
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1433 |
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1434 size_t shrink_bytes = 0; |
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1435 if (capacity_until_GC < minimum_desired_capacity) { |
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1436 // If we have less capacity below the metaspace HWM, then |
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1437 // increment the HWM. |
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1438 size_t expand_bytes = minimum_desired_capacity - capacity_until_GC; |
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1439 expand_bytes = align_size_up(expand_bytes, Metaspace::commit_alignment()); |
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1440 // Don't expand unless it's significant |
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1441 if (expand_bytes >= MinMetaspaceExpansion) { |
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1442 size_t new_capacity_until_GC = MetaspaceGC::inc_capacity_until_GC(expand_bytes); |
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1443 Metaspace::tracer()->report_gc_threshold(capacity_until_GC, |
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1444 new_capacity_until_GC, |
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1445 MetaspaceGCThresholdUpdater::ComputeNewSize); |
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1446 if (PrintGCDetails && Verbose) { |
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1447 gclog_or_tty->print_cr(" expanding:" |
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1448 " minimum_desired_capacity: %6.1fKB" |
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1449 " expand_bytes: %6.1fKB" |
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1450 " MinMetaspaceExpansion: %6.1fKB" |
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1451 " new metaspace HWM: %6.1fKB", |
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1452 minimum_desired_capacity / (double) K, |
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1453 expand_bytes / (double) K, |
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1454 MinMetaspaceExpansion / (double) K, |
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1455 new_capacity_until_GC / (double) K); |
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1456 } |
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1457 } |
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1458 return; |
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1459 } |
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1460 |
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1461 // No expansion, now see if we want to shrink |
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1462 // We would never want to shrink more than this |
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1463 size_t max_shrink_bytes = capacity_until_GC - minimum_desired_capacity; |
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1464 assert(max_shrink_bytes >= 0, err_msg("max_shrink_bytes " SIZE_FORMAT, |
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1465 max_shrink_bytes)); |
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1466 |
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1467 // Should shrinking be considered? |
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1468 if (MaxMetaspaceFreeRatio < 100) { |
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1469 const double maximum_free_percentage = MaxMetaspaceFreeRatio / 100.0; |
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1470 const double minimum_used_percentage = 1.0 - maximum_free_percentage; |
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1471 const double max_tmp = used_after_gc / minimum_used_percentage; |
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1472 size_t maximum_desired_capacity = (size_t)MIN2(max_tmp, double(max_uintx)); |
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1473 maximum_desired_capacity = MAX2(maximum_desired_capacity, |
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1474 MetaspaceSize); |
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1475 if (PrintGCDetails && Verbose) { |
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1476 gclog_or_tty->print_cr(" " |
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1477 " maximum_free_percentage: %6.2f" |
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1478 " minimum_used_percentage: %6.2f", |
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1479 maximum_free_percentage, |
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1480 minimum_used_percentage); |
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1481 gclog_or_tty->print_cr(" " |
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1482 " minimum_desired_capacity: %6.1fKB" |
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1483 " maximum_desired_capacity: %6.1fKB", |
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1484 minimum_desired_capacity / (double) K, |
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1485 maximum_desired_capacity / (double) K); |
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1486 } |
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1487 |
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1488 assert(minimum_desired_capacity <= maximum_desired_capacity, |
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1489 "sanity check"); |
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1490 |
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1491 if (capacity_until_GC > maximum_desired_capacity) { |
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1492 // Capacity too large, compute shrinking size |
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1493 shrink_bytes = capacity_until_GC - maximum_desired_capacity; |
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1494 // We don't want shrink all the way back to initSize if people call |
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1495 // System.gc(), because some programs do that between "phases" and then |
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1496 // we'd just have to grow the heap up again for the next phase. So we |
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1497 // damp the shrinking: 0% on the first call, 10% on the second call, 40% |
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1498 // on the third call, and 100% by the fourth call. But if we recompute |
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1499 // size without shrinking, it goes back to 0%. |
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1500 shrink_bytes = shrink_bytes / 100 * current_shrink_factor; |
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1501 |
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1502 shrink_bytes = align_size_down(shrink_bytes, Metaspace::commit_alignment()); |
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1503 |
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1504 assert(shrink_bytes <= max_shrink_bytes, |
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1505 err_msg("invalid shrink size " SIZE_FORMAT " not <= " SIZE_FORMAT, |
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1506 shrink_bytes, max_shrink_bytes)); |
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1507 if (current_shrink_factor == 0) { |
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1508 _shrink_factor = 10; |
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1509 } else { |
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1510 _shrink_factor = MIN2(current_shrink_factor * 4, (uint) 100); |
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1511 } |
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1512 if (PrintGCDetails && Verbose) { |
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1513 gclog_or_tty->print_cr(" " |
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1514 " shrinking:" |
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1515 " initSize: %.1fK" |
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1516 " maximum_desired_capacity: %.1fK", |
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1517 MetaspaceSize / (double) K, |
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1518 maximum_desired_capacity / (double) K); |
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1519 gclog_or_tty->print_cr(" " |
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1520 " shrink_bytes: %.1fK" |
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1521 " current_shrink_factor: %d" |
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1522 " new shrink factor: %d" |
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1523 " MinMetaspaceExpansion: %.1fK", |
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1524 shrink_bytes / (double) K, |
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1525 current_shrink_factor, |
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1526 _shrink_factor, |
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1527 MinMetaspaceExpansion / (double) K); |
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1528 } |
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1529 } |
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1530 } |
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1531 |
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1532 // Don't shrink unless it's significant |
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1533 if (shrink_bytes >= MinMetaspaceExpansion && |
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1534 ((capacity_until_GC - shrink_bytes) >= MetaspaceSize)) { |
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1535 size_t new_capacity_until_GC = MetaspaceGC::dec_capacity_until_GC(shrink_bytes); |
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1536 Metaspace::tracer()->report_gc_threshold(capacity_until_GC, |
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1537 new_capacity_until_GC, |
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1538 MetaspaceGCThresholdUpdater::ComputeNewSize); |
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1539 } |
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1540 } |
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1541 |
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1542 // Metadebug methods |
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1543 |
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1544 void Metadebug::init_allocation_fail_alot_count() { |
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1545 if (MetadataAllocationFailALot) { |
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1546 _allocation_fail_alot_count = |
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1547 1+(long)((double)MetadataAllocationFailALotInterval*os::random()/(max_jint+1.0)); |
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1548 } |
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|
1549 } |
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1550 |
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1551 #ifdef ASSERT |
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1552 bool Metadebug::test_metadata_failure() { |
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|
1553 if (MetadataAllocationFailALot && |
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|
1554 Threads::is_vm_complete()) { |
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1555 if (_allocation_fail_alot_count > 0) { |
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1556 _allocation_fail_alot_count--; |
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|
1557 } else { |
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1558 if (TraceMetadataChunkAllocation && Verbose) { |
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1559 gclog_or_tty->print_cr("Metadata allocation failing for " |
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|
1560 "MetadataAllocationFailALot"); |
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|
1561 } |
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1562 init_allocation_fail_alot_count(); |
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1563 return true; |
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|
1564 } |
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|
1565 } |
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1566 return false; |
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|
1567 } |
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1568 #endif |
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1569 |
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1570 // ChunkManager methods |
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1571 |
12235 | 1572 size_t ChunkManager::free_chunks_total_words() { |
6725
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1573 return _free_chunks_total; |
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1574 } |
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1575 |
12235 | 1576 size_t ChunkManager::free_chunks_total_bytes() { |
1577 return free_chunks_total_words() * BytesPerWord; | |
6725
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1578 } |
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1579 |
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1580 size_t ChunkManager::free_chunks_count() { |
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1581 #ifdef ASSERT |
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1582 if (!UseConcMarkSweepGC && !SpaceManager::expand_lock()->is_locked()) { |
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1583 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1584 Mutex::_no_safepoint_check_flag); |
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1585 // This lock is only needed in debug because the verification |
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1586 // of the _free_chunks_totals walks the list of free chunks |
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1587 slow_locked_verify_free_chunks_count(); |
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1588 } |
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1589 #endif |
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1590 return _free_chunks_count; |
6725
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|
1591 } |
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1592 |
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1593 void ChunkManager::locked_verify_free_chunks_total() { |
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1594 assert_lock_strong(SpaceManager::expand_lock()); |
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1595 assert(sum_free_chunks() == _free_chunks_total, |
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1596 err_msg("_free_chunks_total " SIZE_FORMAT " is not the" |
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1597 " same as sum " SIZE_FORMAT, _free_chunks_total, |
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1598 sum_free_chunks())); |
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|
1599 } |
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1600 |
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1601 void ChunkManager::verify_free_chunks_total() { |
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1602 MutexLockerEx cl(SpaceManager::expand_lock(), |
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1603 Mutex::_no_safepoint_check_flag); |
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1604 locked_verify_free_chunks_total(); |
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|
1605 } |
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1606 |
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1607 void ChunkManager::locked_verify_free_chunks_count() { |
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1608 assert_lock_strong(SpaceManager::expand_lock()); |
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1609 assert(sum_free_chunks_count() == _free_chunks_count, |
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1610 err_msg("_free_chunks_count " SIZE_FORMAT " is not the" |
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1611 " same as sum " SIZE_FORMAT, _free_chunks_count, |
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1612 sum_free_chunks_count())); |
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|
1613 } |
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|
1614 |
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1615 void ChunkManager::verify_free_chunks_count() { |
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1616 #ifdef ASSERT |
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1617 MutexLockerEx cl(SpaceManager::expand_lock(), |
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|
1618 Mutex::_no_safepoint_check_flag); |
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|
1619 locked_verify_free_chunks_count(); |
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|
1620 #endif |
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|
1621 } |
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|
1622 |
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1623 void ChunkManager::verify() { |
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1624 MutexLockerEx cl(SpaceManager::expand_lock(), |
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|
1625 Mutex::_no_safepoint_check_flag); |
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1626 locked_verify(); |
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|
1627 } |
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|
1628 |
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1629 void ChunkManager::locked_verify() { |
6885 | 1630 locked_verify_free_chunks_count(); |
6725
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1631 locked_verify_free_chunks_total(); |
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|
1632 } |
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|
1633 |
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1634 void ChunkManager::locked_print_free_chunks(outputStream* st) { |
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1635 assert_lock_strong(SpaceManager::expand_lock()); |
7446
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1636 st->print_cr("Free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
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1637 _free_chunks_total, _free_chunks_count); |
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|
1638 } |
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|
1639 |
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1640 void ChunkManager::locked_print_sum_free_chunks(outputStream* st) { |
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1641 assert_lock_strong(SpaceManager::expand_lock()); |
7446
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1642 st->print_cr("Sum free chunk total " SIZE_FORMAT " count " SIZE_FORMAT, |
6725
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1643 sum_free_chunks(), sum_free_chunks_count()); |
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1644 } |
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1645 ChunkList* ChunkManager::free_chunks(ChunkIndex index) { |
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1646 return &_free_chunks[index]; |
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|
1647 } |
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|
1648 |
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1649 // These methods that sum the free chunk lists are used in printing |
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1650 // methods that are used in product builds. |
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1651 size_t ChunkManager::sum_free_chunks() { |
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1652 assert_lock_strong(SpaceManager::expand_lock()); |
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1653 size_t result = 0; |
7446
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1654 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
6725
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1655 ChunkList* list = free_chunks(i); |
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|
1656 |
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|
1657 if (list == NULL) { |
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|
1658 continue; |
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|
1659 } |
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|
1660 |
10101
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1661 result = result + list->count() * list->size(); |
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1662 } |
6885 | 1663 result = result + humongous_dictionary()->total_size(); |
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1664 return result; |
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|
1665 } |
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|
1666 |
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1667 size_t ChunkManager::sum_free_chunks_count() { |
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1668 assert_lock_strong(SpaceManager::expand_lock()); |
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1669 size_t count = 0; |
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1670 for (ChunkIndex i = ZeroIndex; i < NumberOfFreeLists; i = next_chunk_index(i)) { |
6725
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1671 ChunkList* list = free_chunks(i); |
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1672 if (list == NULL) { |
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1673 continue; |
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1674 } |
10101
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1675 count = count + list->count(); |
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1676 } |
6885 | 1677 count = count + humongous_dictionary()->total_free_blocks(); |
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1678 return count; |
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1679 } |
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1680 |
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1681 ChunkList* ChunkManager::find_free_chunks_list(size_t word_size) { |
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1682 ChunkIndex index = list_index(word_size); |
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1683 assert(index < HumongousIndex, "No humongous list"); |
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1684 return free_chunks(index); |
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1685 } |
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1686 |
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1687 Metachunk* ChunkManager::free_chunks_get(size_t word_size) { |
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1688 assert_lock_strong(SpaceManager::expand_lock()); |
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1689 |
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1690 slow_locked_verify(); |
6885 | 1691 |
1692 Metachunk* chunk = NULL; | |
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1693 if (list_index(word_size) != HumongousIndex) { |
6885 | 1694 ChunkList* free_list = find_free_chunks_list(word_size); |
1695 assert(free_list != NULL, "Sanity check"); | |
1696 | |
1697 chunk = free_list->head(); | |
1698 | |
1699 if (chunk == NULL) { | |
1700 return NULL; | |
1701 } | |
1702 | |
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1703 // Remove the chunk as the head of the list. |
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1704 free_list->remove_chunk(chunk); |
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1705 |
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1706 if (TraceMetadataChunkAllocation && Verbose) { |
12240
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1707 gclog_or_tty->print_cr("ChunkManager::free_chunks_get: free_list " |
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1708 PTR_FORMAT " head " PTR_FORMAT " size " SIZE_FORMAT, |
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1709 free_list, chunk, chunk->word_size()); |
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1710 } |
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1711 } else { |
6885 | 1712 chunk = humongous_dictionary()->get_chunk( |
1713 word_size, | |
1714 FreeBlockDictionary<Metachunk>::atLeast); | |
1715 | |
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1716 if (chunk == NULL) { |
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1717 return NULL; |
6885 | 1718 } |
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1719 |
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1720 if (TraceMetadataHumongousAllocation) { |
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1721 size_t waste = chunk->word_size() - word_size; |
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1722 gclog_or_tty->print_cr("Free list allocate humongous chunk size " |
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1723 SIZE_FORMAT " for requested size " SIZE_FORMAT |
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1724 " waste " SIZE_FORMAT, |
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1725 chunk->word_size(), word_size, waste); |
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1726 } |
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1727 } |
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1728 |
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1729 // Chunk is being removed from the chunks free list. |
12902 | 1730 dec_free_chunks_total(chunk->word_size()); |
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1731 |
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1732 // Remove it from the links to this freelist |
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1733 chunk->set_next(NULL); |
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1734 chunk->set_prev(NULL); |
10175 | 1735 #ifdef ASSERT |
1736 // Chunk is no longer on any freelist. Setting to false make container_count_slow() | |
1737 // work. | |
12902 | 1738 chunk->set_is_tagged_free(false); |
10175 | 1739 #endif |
12303
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1740 chunk->container()->inc_container_count(); |
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1741 |
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1742 slow_locked_verify(); |
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1743 return chunk; |
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1744 } |
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1745 |
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1746 Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) { |
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1747 assert_lock_strong(SpaceManager::expand_lock()); |
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1748 slow_locked_verify(); |
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1749 |
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1750 // Take from the beginning of the list |
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1751 Metachunk* chunk = free_chunks_get(word_size); |
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1752 if (chunk == NULL) { |
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1753 return NULL; |
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|
1754 } |
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1755 |
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1756 assert((word_size <= chunk->word_size()) || |
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1757 list_index(chunk->word_size() == HumongousIndex), |
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1758 "Non-humongous variable sized chunk"); |
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1759 if (TraceMetadataChunkAllocation) { |
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1760 size_t list_count; |
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1761 if (list_index(word_size) < HumongousIndex) { |
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1762 ChunkList* list = find_free_chunks_list(word_size); |
10101
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1763 list_count = list->count(); |
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1764 } else { |
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1765 list_count = humongous_dictionary()->total_count(); |
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1766 } |
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1767 gclog_or_tty->print("ChunkManager::chunk_freelist_allocate: " PTR_FORMAT " chunk " |
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1768 PTR_FORMAT " size " SIZE_FORMAT " count " SIZE_FORMAT " ", |
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1769 this, chunk, chunk->word_size(), list_count); |
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1770 locked_print_free_chunks(gclog_or_tty); |
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1771 } |
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|
1772 |
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1773 return chunk; |
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|
1774 } |
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1775 |
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1776 void ChunkManager::print_on(outputStream* out) const { |
6885 | 1777 if (PrintFLSStatistics != 0) { |
12303
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1778 const_cast<ChunkManager *>(this)->humongous_dictionary()->report_statistics(); |
6885 | 1779 } |
1780 } | |
1781 | |
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1782 // SpaceManager methods |
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1783 |
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1784 void SpaceManager::get_initial_chunk_sizes(Metaspace::MetaspaceType type, |
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1785 size_t* chunk_word_size, |
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1786 size_t* class_chunk_word_size) { |
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1787 switch (type) { |
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1788 case Metaspace::BootMetaspaceType: |
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1789 *chunk_word_size = Metaspace::first_chunk_word_size(); |
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1790 *class_chunk_word_size = Metaspace::first_class_chunk_word_size(); |
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1791 break; |
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1792 case Metaspace::ROMetaspaceType: |
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1793 *chunk_word_size = SharedReadOnlySize / wordSize; |
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1794 *class_chunk_word_size = ClassSpecializedChunk; |
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1795 break; |
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1796 case Metaspace::ReadWriteMetaspaceType: |
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1797 *chunk_word_size = SharedReadWriteSize / wordSize; |
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1798 *class_chunk_word_size = ClassSpecializedChunk; |
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1799 break; |
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1800 case Metaspace::AnonymousMetaspaceType: |
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1801 case Metaspace::ReflectionMetaspaceType: |
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1802 *chunk_word_size = SpecializedChunk; |
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1803 *class_chunk_word_size = ClassSpecializedChunk; |
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1804 break; |
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1805 default: |
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1806 *chunk_word_size = SmallChunk; |
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1807 *class_chunk_word_size = ClassSmallChunk; |
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1808 break; |
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1809 } |
8007
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1810 assert(*chunk_word_size != 0 && *class_chunk_word_size != 0, |
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1811 err_msg("Initial chunks sizes bad: data " SIZE_FORMAT |
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1812 " class " SIZE_FORMAT, |
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1813 *chunk_word_size, *class_chunk_word_size)); |
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1814 } |
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1815 |
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1816 size_t SpaceManager::sum_free_in_chunks_in_use() const { |
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1817 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1818 size_t free = 0; |
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1819 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1820 Metachunk* chunk = chunks_in_use(i); |
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1821 while (chunk != NULL) { |
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1822 free += chunk->free_word_size(); |
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1823 chunk = chunk->next(); |
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1824 } |
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1825 } |
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1826 return free; |
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1827 } |
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1828 |
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1829 size_t SpaceManager::sum_waste_in_chunks_in_use() const { |
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1830 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1831 size_t result = 0; |
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1832 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1833 result += sum_waste_in_chunks_in_use(i); |
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1834 } |
6885 | 1835 |
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1836 return result; |
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1837 } |
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1838 |
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1839 size_t SpaceManager::sum_waste_in_chunks_in_use(ChunkIndex index) const { |
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1840 size_t result = 0; |
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1841 Metachunk* chunk = chunks_in_use(index); |
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1842 // Count the free space in all the chunk but not the |
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1843 // current chunk from which allocations are still being done. |
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1844 while (chunk != NULL) { |
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1845 if (chunk != current_chunk()) { |
6885 | 1846 result += chunk->free_word_size(); |
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1847 } |
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1848 chunk = chunk->next(); |
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1849 } |
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1850 return result; |
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1851 } |
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1852 |
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1853 size_t SpaceManager::sum_capacity_in_chunks_in_use() const { |
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1854 // For CMS use "allocated_chunks_words()" which does not need the |
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1855 // Metaspace lock. For the other collectors sum over the |
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1856 // lists. Use both methods as a check that "allocated_chunks_words()" |
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1857 // is correct. That is, sum_capacity_in_chunks() is too expensive |
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1858 // to use in the product and allocated_chunks_words() should be used |
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1859 // but allow for checking that allocated_chunks_words() returns the same |
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1860 // value as sum_capacity_in_chunks_in_use() which is the definitive |
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1861 // answer. |
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1862 if (UseConcMarkSweepGC) { |
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1863 return allocated_chunks_words(); |
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1864 } else { |
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1865 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1866 size_t sum = 0; |
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1867 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1868 Metachunk* chunk = chunks_in_use(i); |
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1869 while (chunk != NULL) { |
12902 | 1870 sum += chunk->word_size(); |
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1871 chunk = chunk->next(); |
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1872 } |
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1873 } |
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1874 return sum; |
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1875 } |
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1876 } |
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1877 |
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1878 size_t SpaceManager::sum_count_in_chunks_in_use() { |
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1879 size_t count = 0; |
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1880 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1881 count = count + sum_count_in_chunks_in_use(i); |
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1882 } |
6885 | 1883 |
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1884 return count; |
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1885 } |
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1886 |
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1887 size_t SpaceManager::sum_count_in_chunks_in_use(ChunkIndex i) { |
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1888 size_t count = 0; |
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1889 Metachunk* chunk = chunks_in_use(i); |
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1890 while (chunk != NULL) { |
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1891 count++; |
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1892 chunk = chunk->next(); |
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1893 } |
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1894 return count; |
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1895 } |
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1896 |
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1897 |
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1898 size_t SpaceManager::sum_used_in_chunks_in_use() const { |
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1899 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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1900 size_t used = 0; |
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1901 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1902 Metachunk* chunk = chunks_in_use(i); |
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1903 while (chunk != NULL) { |
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1904 used += chunk->used_word_size(); |
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1905 chunk = chunk->next(); |
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1906 } |
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1907 } |
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1908 return used; |
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1909 } |
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1910 |
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1911 void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const { |
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1912 |
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1913 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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1914 Metachunk* chunk = chunks_in_use(i); |
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1915 st->print("SpaceManager: %s " PTR_FORMAT, |
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1916 chunk_size_name(i), chunk); |
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1917 if (chunk != NULL) { |
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1918 st->print_cr(" free " SIZE_FORMAT, |
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1919 chunk->free_word_size()); |
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1920 } else { |
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1921 st->print_cr(""); |
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1922 } |
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1923 } |
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1924 |
12303
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1925 chunk_manager()->locked_print_free_chunks(st); |
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1926 chunk_manager()->locked_print_sum_free_chunks(st); |
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1927 } |
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1928 |
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1929 size_t SpaceManager::calc_chunk_size(size_t word_size) { |
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1930 |
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1931 // Decide between a small chunk and a medium chunk. Up to |
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1932 // _small_chunk_limit small chunks can be allocated but |
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1933 // once a medium chunk has been allocated, no more small |
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1934 // chunks will be allocated. |
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1935 size_t chunk_word_size; |
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1936 if (chunks_in_use(MediumIndex) == NULL && |
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1937 sum_count_in_chunks_in_use(SmallIndex) < _small_chunk_limit) { |
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1938 chunk_word_size = (size_t) small_chunk_size(); |
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1939 if (word_size + Metachunk::overhead() > small_chunk_size()) { |
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1940 chunk_word_size = medium_chunk_size(); |
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1941 } |
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1942 } else { |
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1943 chunk_word_size = medium_chunk_size(); |
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1944 } |
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1945 |
12979
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1946 // Might still need a humongous chunk. Enforce |
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1947 // humongous allocations sizes to be aligned up to |
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1948 // the smallest chunk size. |
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1949 size_t if_humongous_sized_chunk = |
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1950 align_size_up(word_size + Metachunk::overhead(), |
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1951 smallest_chunk_size()); |
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1952 chunk_word_size = |
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1953 MAX2((size_t) chunk_word_size, if_humongous_sized_chunk); |
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1954 |
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1955 assert(!SpaceManager::is_humongous(word_size) || |
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1956 chunk_word_size == if_humongous_sized_chunk, |
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1957 err_msg("Size calculation is wrong, word_size " SIZE_FORMAT |
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1958 " chunk_word_size " SIZE_FORMAT, |
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1959 word_size, chunk_word_size)); |
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1960 if (TraceMetadataHumongousAllocation && |
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1961 SpaceManager::is_humongous(word_size)) { |
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1962 gclog_or_tty->print_cr("Metadata humongous allocation:"); |
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1963 gclog_or_tty->print_cr(" word_size " PTR_FORMAT, word_size); |
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1964 gclog_or_tty->print_cr(" chunk_word_size " PTR_FORMAT, |
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1965 chunk_word_size); |
6885 | 1966 gclog_or_tty->print_cr(" chunk overhead " PTR_FORMAT, |
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1967 Metachunk::overhead()); |
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1968 } |
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1969 return chunk_word_size; |
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1970 } |
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1971 |
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1972 void SpaceManager::track_metaspace_memory_usage() { |
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1973 if (is_init_completed()) { |
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1974 if (is_class()) { |
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1975 MemoryService::track_compressed_class_memory_usage(); |
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1976 } |
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1977 MemoryService::track_metaspace_memory_usage(); |
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1978 } |
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1979 } |
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1980 |
6885 | 1981 MetaWord* SpaceManager::grow_and_allocate(size_t word_size) { |
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1982 assert(vs_list()->current_virtual_space() != NULL, |
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1983 "Should have been set"); |
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1984 assert(current_chunk() == NULL || |
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1985 current_chunk()->allocate(word_size) == NULL, |
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1986 "Don't need to expand"); |
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1987 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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1988 |
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1989 if (TraceMetadataChunkAllocation && Verbose) { |
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1990 size_t words_left = 0; |
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1991 size_t words_used = 0; |
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1992 if (current_chunk() != NULL) { |
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1993 words_left = current_chunk()->free_word_size(); |
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1994 words_used = current_chunk()->used_word_size(); |
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1995 } |
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1996 gclog_or_tty->print_cr("SpaceManager::grow_and_allocate for " SIZE_FORMAT |
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1997 " words " SIZE_FORMAT " words used " SIZE_FORMAT |
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1998 " words left", |
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1999 word_size, words_used, words_left); |
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2000 } |
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2001 |
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2002 // Get another chunk out of the virtual space |
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2003 size_t grow_chunks_by_words = calc_chunk_size(word_size); |
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2004 Metachunk* next = get_new_chunk(word_size, grow_chunks_by_words); |
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2005 |
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2006 MetaWord* mem = NULL; |
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2007 |
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2008 // If a chunk was available, add it to the in-use chunk list |
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2009 // and do an allocation from it. |
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2010 if (next != NULL) { |
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2011 // Add to this manager's list of chunks in use. |
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2012 add_chunk(next, false); |
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2013 mem = next->allocate(word_size); |
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2014 } |
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2015 |
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2016 // Track metaspace memory usage statistic. |
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2017 track_metaspace_memory_usage(); |
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2018 |
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2019 return mem; |
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2020 } |
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2021 |
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2022 void SpaceManager::print_on(outputStream* st) const { |
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2023 |
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2024 for (ChunkIndex i = ZeroIndex; |
6885 | 2025 i < NumberOfInUseLists ; |
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2026 i = next_chunk_index(i) ) { |
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2027 st->print_cr(" chunks_in_use " PTR_FORMAT " chunk size " PTR_FORMAT, |
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2028 chunks_in_use(i), |
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2029 chunks_in_use(i) == NULL ? 0 : chunks_in_use(i)->word_size()); |
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2030 } |
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2031 st->print_cr(" waste: Small " SIZE_FORMAT " Medium " SIZE_FORMAT |
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2032 " Humongous " SIZE_FORMAT, |
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2033 sum_waste_in_chunks_in_use(SmallIndex), |
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2034 sum_waste_in_chunks_in_use(MediumIndex), |
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2035 sum_waste_in_chunks_in_use(HumongousIndex)); |
6885 | 2036 // block free lists |
2037 if (block_freelists() != NULL) { | |
2038 st->print_cr("total in block free lists " SIZE_FORMAT, | |
2039 block_freelists()->total_size()); | |
2040 } | |
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2041 } |
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2042 |
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2043 SpaceManager::SpaceManager(Metaspace::MetadataType mdtype, |
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2044 Mutex* lock) : |
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2045 _mdtype(mdtype), |
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2046 _allocated_blocks_words(0), |
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2047 _allocated_chunks_words(0), |
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2048 _allocated_chunks_count(0), |
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2049 _lock(lock) |
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2050 { |
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2051 initialize(); |
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2052 } |
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2053 |
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2054 void SpaceManager::inc_size_metrics(size_t words) { |
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2055 assert_lock_strong(SpaceManager::expand_lock()); |
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2056 // Total of allocated Metachunks and allocated Metachunks count |
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2057 // for each SpaceManager |
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2058 _allocated_chunks_words = _allocated_chunks_words + words; |
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2059 _allocated_chunks_count++; |
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2060 // Global total of capacity in allocated Metachunks |
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2061 MetaspaceAux::inc_capacity(mdtype(), words); |
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2062 // Global total of allocated Metablocks. |
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2063 // used_words_slow() includes the overhead in each |
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2064 // Metachunk so include it in the used when the |
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2065 // Metachunk is first added (so only added once per |
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2066 // Metachunk). |
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2067 MetaspaceAux::inc_used(mdtype(), Metachunk::overhead()); |
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2068 } |
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2069 |
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2070 void SpaceManager::inc_used_metrics(size_t words) { |
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2071 // Add to the per SpaceManager total |
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2072 Atomic::add_ptr(words, &_allocated_blocks_words); |
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2073 // Add to the global total |
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2074 MetaspaceAux::inc_used(mdtype(), words); |
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2075 } |
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2076 |
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2077 void SpaceManager::dec_total_from_size_metrics() { |
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2078 MetaspaceAux::dec_capacity(mdtype(), allocated_chunks_words()); |
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2079 MetaspaceAux::dec_used(mdtype(), allocated_blocks_words()); |
10183
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2080 // Also deduct the overhead per Metachunk |
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2081 MetaspaceAux::dec_used(mdtype(), allocated_chunks_count() * Metachunk::overhead()); |
10183
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2082 } |
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2083 |
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2084 void SpaceManager::initialize() { |
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2085 Metadebug::init_allocation_fail_alot_count(); |
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2086 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
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2087 _chunks_in_use[i] = NULL; |
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2088 } |
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2089 _current_chunk = NULL; |
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2090 if (TraceMetadataChunkAllocation && Verbose) { |
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2091 gclog_or_tty->print_cr("SpaceManager(): " PTR_FORMAT, this); |
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2092 } |
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2093 } |
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2094 |
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2095 void ChunkManager::return_chunks(ChunkIndex index, Metachunk* chunks) { |
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2096 if (chunks == NULL) { |
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2097 return; |
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2098 } |
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2099 ChunkList* list = free_chunks(index); |
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2100 assert(list->size() == chunks->word_size(), "Mismatch in chunk sizes"); |
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2101 assert_lock_strong(SpaceManager::expand_lock()); |
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2102 Metachunk* cur = chunks; |
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2103 |
10175 | 2104 // This returns chunks one at a time. If a new |
10101
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2105 // class List can be created that is a base class |
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2106 // of FreeList then something like FreeList::prepend() |
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2107 // can be used in place of this loop |
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2108 while (cur != NULL) { |
10175 | 2109 assert(cur->container() != NULL, "Container should have been set"); |
2110 cur->container()->dec_container_count(); | |
10101
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2111 // Capture the next link before it is changed |
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2112 // by the call to return_chunk_at_head(); |
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2113 Metachunk* next = cur->next(); |
12902 | 2114 DEBUG_ONLY(cur->set_is_tagged_free(true);) |
10101
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2115 list->return_chunk_at_head(cur); |
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2116 cur = next; |
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|
2117 } |
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|
2118 } |
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|
2119 |
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2120 SpaceManager::~SpaceManager() { |
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2121 // This call this->_lock which can't be done while holding expand_lock() |
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2122 assert(sum_capacity_in_chunks_in_use() == allocated_chunks_words(), |
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2123 err_msg("sum_capacity_in_chunks_in_use() " SIZE_FORMAT |
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2124 " allocated_chunks_words() " SIZE_FORMAT, |
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2125 sum_capacity_in_chunks_in_use(), allocated_chunks_words())); |
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2126 |
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2127 MutexLockerEx fcl(SpaceManager::expand_lock(), |
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2128 Mutex::_no_safepoint_check_flag); |
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2129 |
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2130 chunk_manager()->slow_locked_verify(); |
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2131 |
10183
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2132 dec_total_from_size_metrics(); |
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2133 |
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2134 if (TraceMetadataChunkAllocation && Verbose) { |
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2135 gclog_or_tty->print_cr("~SpaceManager(): " PTR_FORMAT, this); |
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2136 locked_print_chunks_in_use_on(gclog_or_tty); |
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2137 } |
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|
2138 |
10175 | 2139 // Do not mangle freed Metachunks. The chunk size inside Metachunks |
2140 // is during the freeing of a VirtualSpaceNodes. | |
7185
90273fc0a981
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6969
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|
2141 |
6725
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2142 // Have to update before the chunks_in_use lists are emptied |
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|
2143 // below. |
12303
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|
2144 chunk_manager()->inc_free_chunks_total(allocated_chunks_words(), |
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|
2145 sum_count_in_chunks_in_use()); |
6725
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|
2146 |
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|
2147 // Add all the chunks in use by this space manager |
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diff
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|
2148 // to the global list of free chunks. |
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|
2149 |
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2150 // Follow each list of chunks-in-use and add them to the |
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2151 // free lists. Each list is NULL terminated. |
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|
2152 |
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|
2153 for (ChunkIndex i = ZeroIndex; i < HumongousIndex; i = next_chunk_index(i)) { |
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|
2154 if (TraceMetadataChunkAllocation && Verbose) { |
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2155 gclog_or_tty->print_cr("returned %d %s chunks to freelist", |
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|
2156 sum_count_in_chunks_in_use(i), |
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|
2157 chunk_size_name(i)); |
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|
2158 } |
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|
2159 Metachunk* chunks = chunks_in_use(i); |
12303
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|
2160 chunk_manager()->return_chunks(i, chunks); |
7446
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|
2161 set_chunks_in_use(i, NULL); |
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|
2162 if (TraceMetadataChunkAllocation && Verbose) { |
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|
2163 gclog_or_tty->print_cr("updated freelist count %d %s", |
12303
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|
2164 chunk_manager()->free_chunks(i)->count(), |
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|
2165 chunk_size_name(i)); |
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|
2166 } |
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|
2167 assert(i != HumongousIndex, "Humongous chunks are handled explicitly later"); |
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|
2168 } |
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|
2169 |
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|
2170 // The medium chunk case may be optimized by passing the head and |
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|
2171 // tail of the medium chunk list to add_at_head(). The tail is often |
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2172 // the current chunk but there are probably exceptions. |
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|
2173 |
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2174 // Humongous chunks |
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2175 if (TraceMetadataChunkAllocation && Verbose) { |
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|
2176 gclog_or_tty->print_cr("returned %d %s humongous chunks to dictionary", |
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|
2177 sum_count_in_chunks_in_use(HumongousIndex), |
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|
2178 chunk_size_name(HumongousIndex)); |
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|
2179 gclog_or_tty->print("Humongous chunk dictionary: "); |
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2180 } |
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2181 // Humongous chunks are never the current chunk. |
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2182 Metachunk* humongous_chunks = chunks_in_use(HumongousIndex); |
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|
2183 |
6885 | 2184 while (humongous_chunks != NULL) { |
2185 #ifdef ASSERT | |
12902 | 2186 humongous_chunks->set_is_tagged_free(true); |
6885 | 2187 #endif |
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2188 if (TraceMetadataChunkAllocation && Verbose) { |
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2189 gclog_or_tty->print(PTR_FORMAT " (" SIZE_FORMAT ") ", |
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|
2190 humongous_chunks, |
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2191 humongous_chunks->word_size()); |
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|
2192 } |
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2193 assert(humongous_chunks->word_size() == (size_t) |
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|
2194 align_size_up(humongous_chunks->word_size(), |
12979
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
2195 smallest_chunk_size()), |
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|
2196 err_msg("Humongous chunk size is wrong: word size " SIZE_FORMAT |
8007
d9058e388631
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mikael
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7447
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|
2197 " granularity %d", |
12979
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|
2198 humongous_chunks->word_size(), smallest_chunk_size())); |
6885 | 2199 Metachunk* next_humongous_chunks = humongous_chunks->next(); |
10175 | 2200 humongous_chunks->container()->dec_container_count(); |
12303
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|
2201 chunk_manager()->humongous_dictionary()->return_chunk(humongous_chunks); |
6885 | 2202 humongous_chunks = next_humongous_chunks; |
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2203 } |
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2204 if (TraceMetadataChunkAllocation && Verbose) { |
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2205 gclog_or_tty->print_cr(""); |
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2206 gclog_or_tty->print_cr("updated dictionary count %d %s", |
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2207 chunk_manager()->humongous_dictionary()->total_count(), |
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2208 chunk_size_name(HumongousIndex)); |
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2209 } |
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2210 chunk_manager()->slow_locked_verify(); |
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2211 } |
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2212 |
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2213 const char* SpaceManager::chunk_size_name(ChunkIndex index) const { |
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2214 switch (index) { |
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2215 case SpecializedIndex: |
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2216 return "Specialized"; |
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2217 case SmallIndex: |
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2218 return "Small"; |
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2219 case MediumIndex: |
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2220 return "Medium"; |
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2221 case HumongousIndex: |
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2222 return "Humongous"; |
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2223 default: |
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2224 return NULL; |
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2225 } |
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2226 } |
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2227 |
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2228 ChunkIndex ChunkManager::list_index(size_t size) { |
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2229 switch (size) { |
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2230 case SpecializedChunk: |
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2231 assert(SpecializedChunk == ClassSpecializedChunk, |
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2232 "Need branch for ClassSpecializedChunk"); |
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2233 return SpecializedIndex; |
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2234 case SmallChunk: |
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2235 case ClassSmallChunk: |
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2236 return SmallIndex; |
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2237 case MediumChunk: |
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2238 case ClassMediumChunk: |
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2239 return MediumIndex; |
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2240 default: |
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2241 assert(size > MediumChunk || size > ClassMediumChunk, |
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2242 "Not a humongous chunk"); |
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2243 return HumongousIndex; |
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2244 } |
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2245 } |
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2246 |
6885 | 2247 void SpaceManager::deallocate(MetaWord* p, size_t word_size) { |
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2248 assert_lock_strong(_lock); |
11966 | 2249 size_t raw_word_size = get_raw_word_size(word_size); |
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2250 size_t min_size = TreeChunk<Metablock, FreeList<Metablock> >::min_size(); |
11966 | 2251 assert(raw_word_size >= min_size, |
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2252 err_msg("Should not deallocate dark matter " SIZE_FORMAT "<" SIZE_FORMAT, word_size, min_size)); |
11966 | 2253 block_freelists()->return_block(p, raw_word_size); |
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2254 } |
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2255 |
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2256 // Adds a chunk to the list of chunks in use. |
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2257 void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) { |
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2258 |
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2259 assert(new_chunk != NULL, "Should not be NULL"); |
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2260 assert(new_chunk->next() == NULL, "Should not be on a list"); |
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2261 |
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2262 new_chunk->reset_empty(); |
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2263 |
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2264 // Find the correct list and and set the current |
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2265 // chunk for that list. |
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2266 ChunkIndex index = ChunkManager::list_index(new_chunk->word_size()); |
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2267 |
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2268 if (index != HumongousIndex) { |
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2269 retire_current_chunk(); |
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2270 set_current_chunk(new_chunk); |
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2271 new_chunk->set_next(chunks_in_use(index)); |
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2272 set_chunks_in_use(index, new_chunk); |
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2273 } else { |
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2274 // For null class loader data and DumpSharedSpaces, the first chunk isn't |
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2275 // small, so small will be null. Link this first chunk as the current |
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2276 // chunk. |
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2277 if (make_current) { |
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2278 // Set as the current chunk but otherwise treat as a humongous chunk. |
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2279 set_current_chunk(new_chunk); |
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2280 } |
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2281 // Link at head. The _current_chunk only points to a humongous chunk for |
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2282 // the null class loader metaspace (class and data virtual space managers) |
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2283 // any humongous chunks so will not point to the tail |
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2284 // of the humongous chunks list. |
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2285 new_chunk->set_next(chunks_in_use(HumongousIndex)); |
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2286 set_chunks_in_use(HumongousIndex, new_chunk); |
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2287 |
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2288 assert(new_chunk->word_size() > medium_chunk_size(), "List inconsistency"); |
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2289 } |
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|
2290 |
10183
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|
2291 // Add to the running sum of capacity |
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2292 inc_size_metrics(new_chunk->word_size()); |
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2293 |
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2294 assert(new_chunk->is_empty(), "Not ready for reuse"); |
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2295 if (TraceMetadataChunkAllocation && Verbose) { |
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2296 gclog_or_tty->print("SpaceManager::add_chunk: %d) ", |
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2297 sum_count_in_chunks_in_use()); |
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2298 new_chunk->print_on(gclog_or_tty); |
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2299 chunk_manager()->locked_print_free_chunks(gclog_or_tty); |
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2300 } |
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2301 } |
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2302 |
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2303 void SpaceManager::retire_current_chunk() { |
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2304 if (current_chunk() != NULL) { |
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2305 size_t remaining_words = current_chunk()->free_word_size(); |
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2306 if (remaining_words >= TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
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2307 block_freelists()->return_block(current_chunk()->allocate(remaining_words), remaining_words); |
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2308 inc_used_metrics(remaining_words); |
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2309 } |
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2310 } |
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2311 } |
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2312 |
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2313 Metachunk* SpaceManager::get_new_chunk(size_t word_size, |
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2314 size_t grow_chunks_by_words) { |
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2315 // Get a chunk from the chunk freelist |
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2316 Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words); |
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2317 |
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2318 if (next == NULL) { |
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2319 next = vs_list()->get_new_chunk(word_size, |
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2320 grow_chunks_by_words, |
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|
2321 medium_chunk_bunch()); |
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2322 } |
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2323 |
12239 | 2324 if (TraceMetadataHumongousAllocation && next != NULL && |
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2325 SpaceManager::is_humongous(next->word_size())) { |
12239 | 2326 gclog_or_tty->print_cr(" new humongous chunk word size " |
2327 PTR_FORMAT, next->word_size()); | |
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2328 } |
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2329 |
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2330 return next; |
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2331 } |
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2332 |
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2333 MetaWord* SpaceManager::allocate(size_t word_size) { |
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2334 MutexLockerEx cl(lock(), Mutex::_no_safepoint_check_flag); |
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2335 |
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2336 size_t raw_word_size = get_raw_word_size(word_size); |
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2337 BlockFreelist* fl = block_freelists(); |
6885 | 2338 MetaWord* p = NULL; |
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|
2339 // Allocation from the dictionary is expensive in the sense that |
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|
2340 // the dictionary has to be searched for a size. Don't allocate |
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2341 // from the dictionary until it starts to get fat. Is this |
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2342 // a reasonable policy? Maybe an skinny dictionary is fast enough |
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2343 // for allocations. Do some profiling. JJJ |
6885 | 2344 if (fl->total_size() > allocation_from_dictionary_limit) { |
2345 p = fl->get_block(raw_word_size); | |
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2346 } |
6885 | 2347 if (p == NULL) { |
2348 p = allocate_work(raw_word_size); | |
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|
2349 } |
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|
2350 |
6885 | 2351 return p; |
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|
2352 } |
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2353 |
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2354 // Returns the address of spaced allocated for "word_size". |
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2355 // This methods does not know about blocks (Metablocks) |
6885 | 2356 MetaWord* SpaceManager::allocate_work(size_t word_size) { |
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2357 assert_lock_strong(_lock); |
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2358 #ifdef ASSERT |
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2359 if (Metadebug::test_metadata_failure()) { |
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2360 return NULL; |
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|
2361 } |
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|
2362 #endif |
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2363 // Is there space in the current chunk? |
6885 | 2364 MetaWord* result = NULL; |
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2365 |
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2366 // For DumpSharedSpaces, only allocate out of the current chunk which is |
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2367 // never null because we gave it the size we wanted. Caller reports out |
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2368 // of memory if this returns null. |
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2369 if (DumpSharedSpaces) { |
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2370 assert(current_chunk() != NULL, "should never happen"); |
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2371 inc_used_metrics(word_size); |
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2372 return current_chunk()->allocate(word_size); // caller handles null result |
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|
2373 } |
12838
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|
2374 |
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2375 if (current_chunk() != NULL) { |
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|
2376 result = current_chunk()->allocate(word_size); |
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|
2377 } |
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2378 |
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2379 if (result == NULL) { |
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2380 result = grow_and_allocate(word_size); |
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|
2381 } |
12838
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|
2382 |
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|
2383 if (result != NULL) { |
10183
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2384 inc_used_metrics(word_size); |
6885 | 2385 assert(result != (MetaWord*) chunks_in_use(MediumIndex), |
2386 "Head of the list is being allocated"); | |
6725
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2387 } |
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2388 |
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2389 return result; |
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|
2390 } |
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|
2391 |
17663
40353abd7984
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diff
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|
2392 // This function looks at the chunks in the metaspace without locking. |
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2393 // The chunks are added with store ordering and not deleted except for at |
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2394 // unloading time. |
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|
2395 bool SpaceManager::contains(const void *ptr) { |
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2396 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) |
40353abd7984
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|
2397 { |
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|
2398 Metachunk* curr = chunks_in_use(i); |
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2399 while (curr != NULL) { |
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2400 if (curr->contains(ptr)) return true; |
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|
2401 curr = curr->next(); |
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|
2402 } |
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diff
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|
2403 } |
40353abd7984
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13439
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|
2404 return false; |
40353abd7984
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diff
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|
2405 } |
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|
2406 |
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|
2407 void SpaceManager::verify() { |
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|
2408 // If there are blocks in the dictionary, then |
da91efe96a93
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|
2409 // verfication of chunks does not work since |
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diff
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|
2410 // being in the dictionary alters a chunk. |
6885 | 2411 if (block_freelists()->total_size() == 0) { |
7446
e51c9860cf66
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diff
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|
2412 for (ChunkIndex i = ZeroIndex; i < NumberOfInUseLists; i = next_chunk_index(i)) { |
6725
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|
2413 Metachunk* curr = chunks_in_use(i); |
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diff
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|
2414 while (curr != NULL) { |
da91efe96a93
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diff
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|
2415 curr->verify(); |
7208
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2416 verify_chunk_size(curr); |
6725
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diff
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|
2417 curr = curr->next(); |
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diff
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|
2418 } |
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diff
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|
2419 } |
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diff
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|
2420 } |
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diff
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|
2421 } |
da91efe96a93
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coleenp
parents:
diff
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|
2422 |
7208
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2423 void SpaceManager::verify_chunk_size(Metachunk* chunk) { |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
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7187
diff
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|
2424 assert(is_humongous(chunk->word_size()) || |
7446
e51c9860cf66
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jmasa
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diff
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|
2425 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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|
2426 chunk->word_size() == small_chunk_size() || |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
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7435
diff
changeset
|
2427 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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|
2428 "Chunk size is wrong"); |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2429 return; |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
parents:
7187
diff
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|
2430 } |
eade6b2e4782
8003554: NPG: move Metablock and Metachunk code out of metaspace.cpp
jmasa
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7187
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|
2431 |
6725
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|
2432 #ifdef ASSERT |
10183
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10175
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|
2433 void SpaceManager::verify_allocated_blocks_words() { |
6725
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|
2434 // Verification is only guaranteed at a safepoint. |
10183
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10175
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|
2435 assert(SafepointSynchronize::is_at_safepoint() || !Universe::is_fully_initialized(), |
868d87ed63c8
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|
2436 "Verification can fail if the applications is running"); |
868d87ed63c8
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10175
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|
2437 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
|
2438 err_msg("allocation total is not consistent " SIZE_FORMAT |
d9058e388631
8007257: NPG: metaspace.cpp: Incorrect arguments in calls to err_msg
mikael
parents:
7447
diff
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|
2439 " vs " SIZE_FORMAT, |
10183
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|
2440 allocated_blocks_words(), sum_used_in_chunks_in_use())); |
6725
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diff
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|
2441 } |
da91efe96a93
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coleenp
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diff
changeset
|
2442 |
da91efe96a93
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coleenp
parents:
diff
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|
2443 #endif |
da91efe96a93
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coleenp
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diff
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|
2444 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
2445 void SpaceManager::dump(outputStream* const out) const { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2446 size_t curr_total = 0; |
da91efe96a93
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coleenp
parents:
diff
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|
2447 size_t waste = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2448 uint i = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2449 size_t used = 0; |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2450 size_t capacity = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2451 |
da91efe96a93
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coleenp
parents:
diff
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|
2452 // Add up statistics for all chunks in this SpaceManager. |
7446
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|
2453 for (ChunkIndex index = ZeroIndex; |
6885 | 2454 index < NumberOfInUseLists; |
6725
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coleenp
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diff
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|
2455 index = next_chunk_index(index)) { |
da91efe96a93
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parents:
diff
changeset
|
2456 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2457 curr != NULL; |
da91efe96a93
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coleenp
parents:
diff
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|
2458 curr = curr->next()) { |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2459 out->print("%d) ", i++); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2460 curr->print_on(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2461 curr_total += curr->word_size(); |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2462 used += curr->used_word_size(); |
12902 | 2463 capacity += curr->word_size(); |
6725
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diff
changeset
|
2464 waste += curr->free_word_size() + curr->overhead();; |
da91efe96a93
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coleenp
parents:
diff
changeset
|
2465 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
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|
2466 } |
da91efe96a93
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|
2467 |
12239 | 2468 if (TraceMetadataChunkAllocation && Verbose) { |
2469 block_freelists()->print_on(out); | |
2470 } | |
2471 | |
7446
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changeset
|
2472 size_t free = current_chunk() == NULL ? 0 : current_chunk()->free_word_size(); |
6725
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2473 // Free space isn't wasted. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2474 waste -= free; |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2475 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2476 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
|
2477 " free " SIZE_FORMAT " capacity " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2478 " waste " SIZE_FORMAT, curr_total, used, free, capacity, waste); |
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 #ifndef PRODUCT |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2482 void SpaceManager::mangle_freed_chunks() { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2483 for (ChunkIndex index = ZeroIndex; |
6885 | 2484 index < NumberOfInUseLists; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2485 index = next_chunk_index(index)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2486 for (Metachunk* curr = chunks_in_use(index); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2487 curr != NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2488 curr = curr->next()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2489 curr->mangle(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2490 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2491 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2492 } |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6969
diff
changeset
|
2493 #endif // PRODUCT |
6725
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6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2494 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2495 // MetaspaceAux |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2496 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
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10175
diff
changeset
|
2497 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
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|
2498 size_t MetaspaceAux::_allocated_capacity_words[] = {0, 0}; |
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8014862: Add fast Metasapce capacity and used per MetadataType
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diff
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|
2499 size_t MetaspaceAux::_allocated_used_words[] = {0, 0}; |
10183
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10175
diff
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|
2500 |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
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parents:
12056
diff
changeset
|
2501 size_t MetaspaceAux::free_bytes(Metaspace::MetadataType mdtype) { |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
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parents:
12056
diff
changeset
|
2502 VirtualSpaceList* list = Metaspace::get_space_list(mdtype); |
1a8fb39bdbc4
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parents:
12056
diff
changeset
|
2503 return list == NULL ? 0 : list->free_bytes(); |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2504 } |
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
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parents:
12056
diff
changeset
|
2505 |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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parents:
10175
diff
changeset
|
2506 size_t MetaspaceAux::free_bytes() { |
12063
1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
ehelin
parents:
12056
diff
changeset
|
2507 return free_bytes(Metaspace::ClassType) + free_bytes(Metaspace::NonClassType); |
10183
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8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
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parents:
10175
diff
changeset
|
2508 } |
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parents:
10175
diff
changeset
|
2509 |
10330
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diff
changeset
|
2510 void MetaspaceAux::dec_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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jmasa
parents:
10175
diff
changeset
|
2511 assert_lock_strong(SpaceManager::expand_lock()); |
10330
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jmasa
parents:
10191
diff
changeset
|
2512 assert(words <= allocated_capacity_words(mdtype), |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2513 err_msg("About to decrement below 0: words " SIZE_FORMAT |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2514 " is greater than _allocated_capacity_words[%u] " SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2515 words, mdtype, allocated_capacity_words(mdtype))); |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2516 _allocated_capacity_words[mdtype] -= words; |
10183
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jmasa
parents:
10175
diff
changeset
|
2517 } |
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2518 |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
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10191
diff
changeset
|
2519 void MetaspaceAux::inc_capacity(Metaspace::MetadataType mdtype, size_t words) { |
10183
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jmasa
parents:
10175
diff
changeset
|
2520 assert_lock_strong(SpaceManager::expand_lock()); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2521 // Needs to be atomic |
10330
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8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
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10191
diff
changeset
|
2522 _allocated_capacity_words[mdtype] += words; |
10183
868d87ed63c8
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jmasa
parents:
10175
diff
changeset
|
2523 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2524 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2525 void MetaspaceAux::dec_used(Metaspace::MetadataType mdtype, size_t words) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2526 assert(words <= allocated_used_words(mdtype), |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2527 err_msg("About to decrement below 0: words " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2528 " is greater than _allocated_used_words[%u] " SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2529 words, mdtype, allocated_used_words(mdtype))); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2530 // For CMS deallocation of the Metaspaces occurs during the |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2531 // sweep which is a concurrent phase. Protection by the expand_lock() |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2532 // is not enough since allocation is on a per Metaspace basis |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2533 // and protected by the Metaspace lock. |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2534 jlong minus_words = (jlong) - (jlong) words; |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2535 Atomic::add_ptr(minus_words, &_allocated_used_words[mdtype]); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2536 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2537 |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2538 void MetaspaceAux::inc_used(Metaspace::MetadataType mdtype, size_t words) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2539 // _allocated_used_words tracks allocations for |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2540 // each piece of metadata. Those allocations are |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2541 // generally done concurrently by different application |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2542 // threads so must be done atomically. |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2543 Atomic::add_ptr(words, &_allocated_used_words[mdtype]); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2544 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2545 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2546 size_t MetaspaceAux::used_bytes_slow(Metaspace::MetadataType mdtype) { |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2547 size_t used = 0; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2548 ClassLoaderDataGraphMetaspaceIterator iter; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2549 while (iter.repeat()) { |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2550 Metaspace* msp = iter.get_next(); |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2551 // Sum allocated_blocks_words for each metaspace |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2552 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2553 used += msp->used_words_slow(mdtype); |
6730
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2554 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2555 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2556 return used * BytesPerWord; |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2557 } |
5d2156bcb78b
7195789: NPG: assert(used + free == capacity) failed: Accounting is wrong
jmasa
parents:
6726
diff
changeset
|
2558 |
12235 | 2559 size_t MetaspaceAux::free_bytes_slow(Metaspace::MetadataType mdtype) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2560 size_t free = 0; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2561 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2562 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2563 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2564 if (msp != NULL) { |
12235 | 2565 free += msp->free_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2566 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2567 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2568 return free * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2569 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2570 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2571 size_t MetaspaceAux::capacity_bytes_slow(Metaspace::MetadataType mdtype) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2572 if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2573 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2574 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2575 // Don't count the space in the freelists. That space will be |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2576 // added to the capacity calculation as needed. |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2577 size_t capacity = 0; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2578 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2579 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2580 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2581 if (msp != NULL) { |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2582 capacity += msp->capacity_words_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2583 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2584 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2585 return capacity * BytesPerWord; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2586 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2587 |
12235 | 2588 size_t MetaspaceAux::capacity_bytes_slow() { |
2589 #ifdef PRODUCT | |
2590 // Use allocated_capacity_bytes() in PRODUCT instead of this function. | |
2591 guarantee(false, "Should not call capacity_bytes_slow() in the PRODUCT"); | |
2592 #endif | |
2593 size_t class_capacity = capacity_bytes_slow(Metaspace::ClassType); | |
2594 size_t non_class_capacity = capacity_bytes_slow(Metaspace::NonClassType); | |
2595 assert(allocated_capacity_bytes() == class_capacity + non_class_capacity, | |
2596 err_msg("bad accounting: allocated_capacity_bytes() " SIZE_FORMAT | |
2597 " class_capacity + non_class_capacity " SIZE_FORMAT | |
2598 " class_capacity " SIZE_FORMAT " non_class_capacity " SIZE_FORMAT, | |
2599 allocated_capacity_bytes(), class_capacity + non_class_capacity, | |
2600 class_capacity, non_class_capacity)); | |
2601 | |
2602 return class_capacity + non_class_capacity; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2603 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2604 |
12235 | 2605 size_t MetaspaceAux::reserved_bytes(Metaspace::MetadataType mdtype) { |
2606 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
|
2607 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
|
2608 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2609 |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
12235
diff
changeset
|
2610 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
|
2611 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
|
2612 return list == NULL ? 0 : list->committed_bytes(); |
12235 | 2613 } |
2614 | |
2615 size_t MetaspaceAux::min_chunk_size_words() { return Metaspace::first_chunk_word_size(); } | |
2616 | |
2617 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
|
2618 ChunkManager* chunk_manager = Metaspace::get_chunk_manager(mdtype); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2619 if (chunk_manager == NULL) { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2620 return 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2621 } |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2622 chunk_manager->slow_verify(); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2623 return chunk_manager->free_chunks_total_words(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2624 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
2625 |
12235 | 2626 size_t MetaspaceAux::free_chunks_total_bytes(Metaspace::MetadataType mdtype) { |
2627 return free_chunks_total_words(mdtype) * BytesPerWord; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2628 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2629 |
12235 | 2630 size_t MetaspaceAux::free_chunks_total_words() { |
2631 return free_chunks_total_words(Metaspace::ClassType) + | |
2632 free_chunks_total_words(Metaspace::NonClassType); | |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2633 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2634 |
12235 | 2635 size_t MetaspaceAux::free_chunks_total_bytes() { |
2636 return free_chunks_total_words() * BytesPerWord; | |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2637 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2638 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2639 void MetaspaceAux::print_metaspace_change(size_t prev_metadata_used) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2640 gclog_or_tty->print(", [Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2641 if (PrintGCDetails && Verbose) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2642 gclog_or_tty->print(" " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2643 "->" SIZE_FORMAT |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2644 "(" SIZE_FORMAT ")", |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2645 prev_metadata_used, |
11037
df7e1c0e3dc1
8014546: MetaspaceAux print_metaspace_change() should print "used" after GC not capacity
jmasa
parents:
10376
diff
changeset
|
2646 allocated_used_bytes(), |
12235 | 2647 reserved_bytes()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2648 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2649 gclog_or_tty->print(" " SIZE_FORMAT "K" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2650 "->" SIZE_FORMAT "K" |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2651 "(" SIZE_FORMAT "K)", |
12235 | 2652 prev_metadata_used/K, |
2653 allocated_used_bytes()/K, | |
2654 reserved_bytes()/K); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2655 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2656 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2657 gclog_or_tty->print("]"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2658 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2659 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2660 // This is printed when PrintGCDetails |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2661 void MetaspaceAux::print_on(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2662 Metaspace::MetadataType nct = Metaspace::NonClassType; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2663 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2664 out->print_cr(" Metaspace " |
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()/K, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2670 allocated_capacity_bytes()/K, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2671 committed_bytes()/K, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2672 reserved_bytes()/K); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2673 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2674 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2675 Metaspace::MetadataType ct = Metaspace::ClassType; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2676 out->print_cr(" class space " |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2677 "used " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2678 "capacity " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2679 "committed " SIZE_FORMAT "K, " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2680 "reserved " SIZE_FORMAT "K", |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2681 allocated_used_bytes(ct)/K, |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2682 allocated_capacity_bytes(ct)/K, |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2683 committed_bytes(ct)/K, |
12235 | 2684 reserved_bytes(ct)/K); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2685 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2686 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2687 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2688 // Print information for class space and data space separately. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2689 // This is almost the same as above. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2690 void MetaspaceAux::print_on(outputStream* out, Metaspace::MetadataType mdtype) { |
12235 | 2691 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
|
2692 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
|
2693 size_t used_bytes = used_bytes_slow(mdtype); |
12235 | 2694 size_t free_bytes = free_bytes_slow(mdtype); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2695 size_t used_and_free = used_bytes + free_bytes + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2696 free_chunks_capacity_bytes; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2697 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
|
2698 "K + unused in chunks " SIZE_FORMAT "K + " |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2699 " capacity in free chunks " SIZE_FORMAT "K = " SIZE_FORMAT |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2700 "K capacity in allocated chunks " SIZE_FORMAT "K", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2701 used_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2702 free_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2703 free_chunks_capacity_bytes / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2704 used_and_free / K, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2705 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
|
2706 // 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
|
2707 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
|
2708 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2709 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2710 // Print total fragmentation for class metaspaces |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2711 void MetaspaceAux::print_class_waste(outputStream* out) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2712 assert(Metaspace::using_class_space(), "class metaspace not used"); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2713 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
|
2714 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
|
2715 ClassLoaderDataGraphMetaspaceIterator iter; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2716 while (iter.repeat()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2717 Metaspace* msp = iter.get_next(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2718 if (msp != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2719 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
|
2720 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
|
2721 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
|
2722 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
|
2723 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
|
2724 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
|
2725 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
|
2726 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2727 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2728 out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2729 SIZE_FORMAT " small(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2730 SIZE_FORMAT " medium(s) " SIZE_FORMAT ", " |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2731 "large count " SIZE_FORMAT, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2732 cls_specialized_count, cls_specialized_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2733 cls_small_count, cls_small_waste, |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2734 cls_medium_count, cls_medium_waste, cls_humongous_count); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2735 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2736 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2737 // 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
|
2738 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
|
2739 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
|
2740 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
|
2741 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2742 ClassLoaderDataGraphMetaspaceIterator iter; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2743 while (iter.repeat()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2744 Metaspace* msp = iter.get_next(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2745 if (msp != NULL) { |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2746 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
|
2747 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
|
2748 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
|
2749 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
|
2750 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
|
2751 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
|
2752 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
|
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 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
|
2756 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
|
2757 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
|
2758 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
|
2759 "large count " SIZE_FORMAT, |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2760 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
|
2761 small_waste, medium_count, medium_waste, humongous_count); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2762 if (Metaspace::using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2763 print_class_waste(out); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2764 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2765 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2766 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2767 // Dump global metaspace things from the end of ClassLoaderDataGraph |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2768 void MetaspaceAux::dump(outputStream* out) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2769 out->print_cr("All Metaspace:"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2770 out->print("data space: "); print_on(out, Metaspace::NonClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2771 out->print("class space: "); print_on(out, Metaspace::ClassType); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2772 print_waste(out); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2773 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2774 |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2775 void MetaspaceAux::verify_free_chunks() { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2776 Metaspace::chunk_manager_metadata()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2777 if (Metaspace::using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2778 Metaspace::chunk_manager_class()->verify(); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2779 } |
6969
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2780 } |
6bc207d87e5d
7200229: NPG: possible performance issue exposed by closed/runtime/6559877/Test6559877.java
mgerdin
parents:
6885
diff
changeset
|
2781 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2782 void MetaspaceAux::verify_capacity() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2783 #ifdef ASSERT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2784 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
|
2785 // 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
|
2786 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
|
2787 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
|
2788 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
|
2789 " capacity_bytes_slow()" SIZE_FORMAT, |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2790 running_sum_capacity_bytes, capacity_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2791 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2792 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2793 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2794 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
|
2795 assert(allocated_capacity_bytes(i) == capacity_in_use_bytes, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2796 err_msg("allocated_capacity_bytes(%u) " SIZE_FORMAT |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2797 " capacity_bytes_slow(%u)" SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2798 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
|
2799 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2800 #endif |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2801 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2802 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2803 void MetaspaceAux::verify_used() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2804 #ifdef ASSERT |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2805 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
|
2806 // 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
|
2807 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
|
2808 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
|
2809 err_msg("allocated_used_bytes() " SIZE_FORMAT |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2810 " used_bytes_slow()" SIZE_FORMAT, |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2811 allocated_used_bytes(), used_in_use_bytes)); |
10330
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2812 for (Metaspace::MetadataType i = Metaspace::ClassType; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2813 i < Metaspace:: MetadataTypeCount; |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2814 i = (Metaspace::MetadataType)(i + 1)) { |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2815 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
|
2816 assert(allocated_used_bytes(i) == used_in_use_bytes, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2817 err_msg("allocated_used_bytes(%u) " SIZE_FORMAT |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2818 " used_bytes_slow(%u)" SIZE_FORMAT, |
2b1a9d972fc2
8014862: Add fast Metasapce capacity and used per MetadataType
jmasa
parents:
10191
diff
changeset
|
2819 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
|
2820 } |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2821 #endif |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2822 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2823 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2824 void MetaspaceAux::verify_metrics() { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2825 verify_capacity(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2826 verify_used(); |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2827 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2828 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
2829 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2830 // Metaspace methods |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2831 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2832 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
|
2833 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
|
2834 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2835 size_t Metaspace::_commit_alignment = 0; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2836 size_t Metaspace::_reserve_alignment = 0; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
2837 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2838 Metaspace::Metaspace(Mutex* lock, MetaspaceType type) { |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
2839 initialize(lock, type); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2840 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2841 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2842 Metaspace::~Metaspace() { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2843 delete _vsm; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2844 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2845 delete _class_vsm; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
2846 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2847 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2848 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2849 VirtualSpaceList* Metaspace::_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2850 VirtualSpaceList* Metaspace::_class_space_list = NULL; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2851 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2852 ChunkManager* Metaspace::_chunk_manager_metadata = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2853 ChunkManager* Metaspace::_chunk_manager_class = NULL; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
2854 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
2855 #define VIRTUALSPACEMULTIPLIER 2 |
da91efe96a93
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2856 |
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2857 #ifdef _LP64 |
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2858 static const uint64_t UnscaledClassSpaceMax = (uint64_t(max_juint) + 1); |
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2859 |
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2860 void Metaspace::set_narrow_klass_base_and_shift(address metaspace_base, address cds_base) { |
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2861 // Figure out the narrow_klass_base and the narrow_klass_shift. The |
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2862 // narrow_klass_base is the lower of the metaspace base and the cds base |
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2863 // (if cds is enabled). The narrow_klass_shift depends on the distance |
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2864 // between the lower base and higher address. |
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2865 address lower_base; |
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2866 address higher_address; |
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2867 if (UseSharedSpaces) { |
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2868 higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
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2869 (address)(metaspace_base + compressed_class_space_size())); |
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2870 lower_base = MIN2(metaspace_base, cds_base); |
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2871 } else { |
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2872 higher_address = metaspace_base + compressed_class_space_size(); |
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2873 lower_base = metaspace_base; |
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2874 |
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2875 uint64_t klass_encoding_max = UnscaledClassSpaceMax << LogKlassAlignmentInBytes; |
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2876 // If compressed class space fits in lower 32G, we don't need a base. |
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2877 if (higher_address <= (address)klass_encoding_max) { |
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2878 lower_base = 0; // effectively lower base is zero. |
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2879 } |
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2880 } |
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2881 |
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2882 Universe::set_narrow_klass_base(lower_base); |
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2883 |
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2884 if ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax) { |
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2885 Universe::set_narrow_klass_shift(0); |
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2886 } else { |
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2887 assert(!UseSharedSpaces, "Cannot shift with UseSharedSpaces"); |
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2888 Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes); |
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2889 } |
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2890 } |
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2891 |
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2892 // Return TRUE if the specified metaspace_base and cds_base are close enough |
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2893 // to work with compressed klass pointers. |
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2894 bool Metaspace::can_use_cds_with_metaspace_addr(char* metaspace_base, address cds_base) { |
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2895 assert(cds_base != 0 && UseSharedSpaces, "Only use with CDS"); |
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2896 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
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2897 address lower_base = MIN2((address)metaspace_base, cds_base); |
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2898 address higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()), |
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2899 (address)(metaspace_base + compressed_class_space_size())); |
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2900 return ((uint64_t)(higher_address - lower_base) <= UnscaledClassSpaceMax); |
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2901 } |
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2902 |
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2903 // Try to allocate the metaspace at the requested addr. |
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2904 void Metaspace::allocate_metaspace_compressed_klass_ptrs(char* requested_addr, address cds_base) { |
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2905 assert(using_class_space(), "called improperly"); |
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2906 assert(UseCompressedClassPointers, "Only use with CompressedKlassPtrs"); |
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2907 assert(compressed_class_space_size() < KlassEncodingMetaspaceMax, |
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2908 "Metaspace size is too big"); |
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2909 assert_is_ptr_aligned(requested_addr, _reserve_alignment); |
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2910 assert_is_ptr_aligned(cds_base, _reserve_alignment); |
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2911 assert_is_size_aligned(compressed_class_space_size(), _reserve_alignment); |
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2912 |
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2913 // Don't use large pages for the class space. |
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|
2914 bool large_pages = false; |
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2915 |
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2916 ReservedSpace metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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2917 _reserve_alignment, |
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|
2918 large_pages, |
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|
2919 requested_addr, 0); |
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2920 if (!metaspace_rs.is_reserved()) { |
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2921 if (UseSharedSpaces) { |
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2922 size_t increment = align_size_up(1*G, _reserve_alignment); |
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2923 |
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2924 // Keep trying to allocate the metaspace, increasing the requested_addr |
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2925 // by 1GB each time, until we reach an address that will no longer allow |
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2926 // use of CDS with compressed klass pointers. |
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2927 char *addr = requested_addr; |
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2928 while (!metaspace_rs.is_reserved() && (addr + increment > addr) && |
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2929 can_use_cds_with_metaspace_addr(addr + increment, cds_base)) { |
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|
2930 addr = addr + increment; |
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2931 metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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2932 _reserve_alignment, large_pages, addr, 0); |
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2933 } |
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|
2934 } |
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|
2935 |
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2936 // If no successful allocation then try to allocate the space anywhere. If |
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2937 // that fails then OOM doom. At this point we cannot try allocating the |
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2938 // metaspace as if UseCompressedClassPointers is off because too much |
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2939 // initialization has happened that depends on UseCompressedClassPointers. |
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2940 // So, UseCompressedClassPointers cannot be turned off at this point. |
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2941 if (!metaspace_rs.is_reserved()) { |
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2942 metaspace_rs = ReservedSpace(compressed_class_space_size(), |
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2943 _reserve_alignment, large_pages); |
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2944 if (!metaspace_rs.is_reserved()) { |
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2945 vm_exit_during_initialization(err_msg("Could not allocate metaspace: %d bytes", |
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|
2946 compressed_class_space_size())); |
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|
2947 } |
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|
2948 } |
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|
2949 } |
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|
2950 |
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2951 // If we got here then the metaspace got allocated. |
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|
2952 MemTracker::record_virtual_memory_type((address)metaspace_rs.base(), mtClass); |
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|
2953 |
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2954 // Verify that we can use shared spaces. Otherwise, turn off CDS. |
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2955 if (UseSharedSpaces && !can_use_cds_with_metaspace_addr(metaspace_rs.base(), cds_base)) { |
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|
2956 FileMapInfo::stop_sharing_and_unmap( |
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|
2957 "Could not allocate metaspace at a compatible address"); |
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|
2958 } |
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|
2959 |
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|
2960 set_narrow_klass_base_and_shift((address)metaspace_rs.base(), |
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|
2961 UseSharedSpaces ? (address)cds_base : 0); |
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|
2962 |
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|
2963 initialize_class_space(metaspace_rs); |
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|
2964 |
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|
2965 if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) { |
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|
2966 gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: " SIZE_FORMAT, |
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2967 Universe::narrow_klass_base(), Universe::narrow_klass_shift()); |
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|
2968 gclog_or_tty->print_cr("Compressed class space size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT, |
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|
2969 compressed_class_space_size(), metaspace_rs.base(), requested_addr); |
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|
2970 } |
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|
2971 } |
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|
2972 |
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|
2973 // For UseCompressedClassPointers the class space is reserved above the top of |
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|
2974 // the Java heap. The argument passed in is at the base of the compressed space. |
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2975 void Metaspace::initialize_class_space(ReservedSpace rs) { |
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2976 // The reserved space size may be bigger because of alignment, esp with UseLargePages |
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2977 assert(rs.size() >= CompressedClassSpaceSize, |
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2978 err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize)); |
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2979 assert(using_class_space(), "Must be using class space"); |
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2980 _class_space_list = new VirtualSpaceList(rs); |
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2981 _chunk_manager_class = new ChunkManager(SpecializedChunk, ClassSmallChunk, ClassMediumChunk); |
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2982 |
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2983 if (!_class_space_list->initialization_succeeded()) { |
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2984 vm_exit_during_initialization("Failed to setup compressed class space virtual space list."); |
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2985 } |
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2986 } |
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2987 |
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2988 #endif |
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2989 |
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2990 void Metaspace::ergo_initialize() { |
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2991 if (DumpSharedSpaces) { |
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2992 // Using large pages when dumping the shared archive is currently not implemented. |
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2993 FLAG_SET_ERGO(bool, UseLargePagesInMetaspace, false); |
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2994 } |
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2995 |
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2996 size_t page_size = os::vm_page_size(); |
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2997 if (UseLargePages && UseLargePagesInMetaspace) { |
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2998 page_size = os::large_page_size(); |
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2999 } |
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3000 |
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3001 _commit_alignment = page_size; |
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3002 _reserve_alignment = MAX2(page_size, (size_t)os::vm_allocation_granularity()); |
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3003 |
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3004 // Do not use FLAG_SET_ERGO to update MaxMetaspaceSize, since this will |
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3005 // override if MaxMetaspaceSize was set on the command line or not. |
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3006 // This information is needed later to conform to the specification of the |
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3007 // java.lang.management.MemoryUsage API. |
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3008 // |
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3009 // Ideally, we would be able to set the default value of MaxMetaspaceSize in |
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3010 // globals.hpp to the aligned value, but this is not possible, since the |
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3011 // alignment depends on other flags being parsed. |
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3012 MaxMetaspaceSize = align_size_down_bounded(MaxMetaspaceSize, _reserve_alignment); |
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3013 |
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3014 if (MetaspaceSize > MaxMetaspaceSize) { |
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3015 MetaspaceSize = MaxMetaspaceSize; |
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3016 } |
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3017 |
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3018 MetaspaceSize = align_size_down_bounded(MetaspaceSize, _commit_alignment); |
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3019 |
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3020 assert(MetaspaceSize <= MaxMetaspaceSize, "MetaspaceSize should be limited by MaxMetaspaceSize"); |
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3021 |
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3022 if (MetaspaceSize < 256*K) { |
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3023 vm_exit_during_initialization("Too small initial Metaspace size"); |
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3024 } |
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3025 |
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3026 MinMetaspaceExpansion = align_size_down_bounded(MinMetaspaceExpansion, _commit_alignment); |
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3027 MaxMetaspaceExpansion = align_size_down_bounded(MaxMetaspaceExpansion, _commit_alignment); |
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3028 |
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3029 CompressedClassSpaceSize = align_size_down_bounded(CompressedClassSpaceSize, _reserve_alignment); |
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3030 set_compressed_class_space_size(CompressedClassSpaceSize); |
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3031 } |
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3032 |
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3033 void Metaspace::global_initialize() { |
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3034 // Initialize the alignment for shared spaces. |
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3035 int max_alignment = os::vm_page_size(); |
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3036 size_t cds_total = 0; |
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3037 |
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3038 MetaspaceShared::set_max_alignment(max_alignment); |
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3039 |
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3040 if (DumpSharedSpaces) { |
12838
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3041 SharedReadOnlySize = align_size_up(SharedReadOnlySize, max_alignment); |
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3042 SharedReadWriteSize = align_size_up(SharedReadWriteSize, max_alignment); |
12838
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3043 SharedMiscDataSize = align_size_up(SharedMiscDataSize, max_alignment); |
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3044 SharedMiscCodeSize = align_size_up(SharedMiscCodeSize, max_alignment); |
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3045 |
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3046 // Initialize with the sum of the shared space sizes. The read-only |
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3047 // and read write metaspace chunks will be allocated out of this and the |
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3048 // remainder is the misc code and data chunks. |
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3049 cds_total = FileMapInfo::shared_spaces_size(); |
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3050 cds_total = align_size_up(cds_total, _reserve_alignment); |
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3051 _space_list = new VirtualSpaceList(cds_total/wordSize); |
12303
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3052 _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk); |
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3053 |
12838
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3054 if (!_space_list->initialization_succeeded()) { |
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3055 vm_exit_during_initialization("Unable to dump shared archive.", NULL); |
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|
3056 } |
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|
3057 |
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|
3058 #ifdef _LP64 |
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3059 if (cds_total + compressed_class_space_size() > UnscaledClassSpaceMax) { |
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3060 vm_exit_during_initialization("Unable to dump shared archive.", |
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3061 err_msg("Size of archive (" SIZE_FORMAT ") + compressed class space (" |
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3062 SIZE_FORMAT ") == total (" SIZE_FORMAT ") is larger than compressed " |
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3063 "klass limit: " SIZE_FORMAT, cds_total, compressed_class_space_size(), |
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|
3064 cds_total + compressed_class_space_size(), UnscaledClassSpaceMax)); |
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|
3065 } |
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|
3066 |
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3067 // Set the compressed klass pointer base so that decoding of these pointers works |
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|
3068 // properly when creating the shared archive. |
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|
3069 assert(UseCompressedOops && UseCompressedClassPointers, |
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3070 "UseCompressedOops and UseCompressedClassPointers must be set"); |
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|
3071 Universe::set_narrow_klass_base((address)_space_list->current_virtual_space()->bottom()); |
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3072 if (TraceMetavirtualspaceAllocation && Verbose) { |
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|
3073 gclog_or_tty->print_cr("Setting_narrow_klass_base to Address: " PTR_FORMAT, |
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|
3074 _space_list->current_virtual_space()->bottom()); |
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|
3075 } |
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|
3076 |
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|
3077 Universe::set_narrow_klass_shift(0); |
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|
3078 #endif |
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|
3079 |
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|
3080 } else { |
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3081 // If using shared space, open the file that contains the shared space |
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3082 // and map in the memory before initializing the rest of metaspace (so |
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3083 // the addresses don't conflict) |
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|
3084 address cds_address = NULL; |
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|
3085 if (UseSharedSpaces) { |
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|
3086 FileMapInfo* mapinfo = new FileMapInfo(); |
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|
3087 memset(mapinfo, 0, sizeof(FileMapInfo)); |
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|
3088 |
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|
3089 // Open the shared archive file, read and validate the header. If |
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|
3090 // initialization fails, shared spaces [UseSharedSpaces] are |
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|
3091 // disabled and the file is closed. |
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|
3092 // Map in spaces now also |
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|
3093 if (mapinfo->initialize() && MetaspaceShared::map_shared_spaces(mapinfo)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3094 FileMapInfo::set_current_info(mapinfo); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3095 cds_total = FileMapInfo::shared_spaces_size(); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3096 cds_address = (address)mapinfo->region_base(0); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3097 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3098 assert(!mapinfo->is_open() && !UseSharedSpaces, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3099 "archive file not closed or shared spaces not disabled."); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3100 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3101 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3102 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3103 #ifdef _LP64 |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3104 // If UseCompressedClassPointers is set then allocate the metaspace area |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3105 // above the heap and above the CDS area (if it exists). |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3106 if (using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3107 if (UseSharedSpaces) { |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3108 char* cds_end = (char*)(cds_address + cds_total); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3109 cds_end = (char *)align_ptr_up(cds_end, _reserve_alignment); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3110 allocate_metaspace_compressed_klass_ptrs(cds_end, cds_address); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3111 } else { |
13000
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
3112 char* base = (char*)align_ptr_up(Universe::heap()->reserved_region().end(), _reserve_alignment); |
209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
coleenp
parents:
12998
diff
changeset
|
3113 allocate_metaspace_compressed_klass_ptrs(base, 0); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3114 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3115 } |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3116 #endif |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3117 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3118 // Initialize these before initializing the VirtualSpaceList |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3119 _first_chunk_word_size = InitialBootClassLoaderMetaspaceSize / BytesPerWord; |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3120 _first_chunk_word_size = align_word_size_up(_first_chunk_word_size); |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3121 // Make the first class chunk bigger than a medium chunk so it's not put |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3122 // on the medium chunk list. The next chunk will be small and progress |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3123 // from there. This size calculated by -version. |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3124 _first_class_chunk_word_size = MIN2((size_t)MediumChunk*6, |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3125 (CompressedClassSpaceSize/BytesPerWord)*2); |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3126 _first_class_chunk_word_size = align_word_size_up(_first_class_chunk_word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3127 // Arbitrarily set the initial virtual space to a multiple |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3128 // of the boot class loader size. |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3129 size_t word_size = VIRTUALSPACEMULTIPLIER * _first_chunk_word_size; |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3130 word_size = align_size_up(word_size, Metaspace::reserve_alignment_words()); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3131 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3132 // Initialize the list of virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3133 _space_list = new VirtualSpaceList(word_size); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3134 _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
|
3135 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3136 if (!_space_list->initialization_succeeded()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3137 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
|
3138 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3139 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3140 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3141 MetaspaceGC::initialize(); |
17768
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3142 _tracer = new MetaspaceTracer(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3143 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3144 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3145 Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3146 size_t chunk_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3147 size_t chunk_bunch) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3148 // Get a chunk from the chunk freelist |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3149 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
|
3150 if (chunk != NULL) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3151 return chunk; |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3152 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3153 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3154 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
|
3155 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3156 |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3157 void Metaspace::initialize(Mutex* lock, MetaspaceType type) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3158 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3159 assert(space_list() != NULL, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3160 "Metadata VirtualSpaceList has not been initialized"); |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3161 assert(chunk_manager_metadata() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3162 "Metadata ChunkManager has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3163 |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3164 _vsm = new SpaceManager(NonClassType, lock); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3165 if (_vsm == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3166 return; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3167 } |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3168 size_t word_size; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3169 size_t class_word_size; |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3170 vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3171 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3172 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3173 assert(class_space_list() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3174 "Class VirtualSpaceList has not been initialized"); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3175 assert(chunk_manager_class() != NULL, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3176 "Class ChunkManager has not been initialized"); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3177 |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3178 // Allocate SpaceManager for classes. |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3179 _class_vsm = new SpaceManager(ClassType, lock); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3180 if (_class_vsm == NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3181 return; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3182 } |
6725
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 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3185 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
|
3186 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3187 // Allocate chunk for metadata objects |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3188 Metachunk* new_chunk = get_initialization_chunk(NonClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3189 word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3190 vsm()->medium_chunk_bunch()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3191 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
|
3192 if (new_chunk != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3193 // 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
|
3194 vsm()->add_chunk(new_chunk, true); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3195 } |
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 // Allocate chunk for class metadata objects |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3198 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3199 Metachunk* class_chunk = get_initialization_chunk(ClassType, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3200 class_word_size, |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3201 class_vsm()->medium_chunk_bunch()); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3202 if (class_chunk != NULL) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3203 class_vsm()->add_chunk(class_chunk, true); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3204 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3205 } |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3206 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3207 _alloc_record_head = NULL; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3208 _alloc_record_tail = NULL; |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3209 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3210 |
7446
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3211 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
|
3212 size_t byte_size = word_size * wordSize; |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3213 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
|
3214 } |
e51c9860cf66
8005082: NPG: Add specialized Metachunk sizes for reflection and anonymous classloaders
jmasa
parents:
7435
diff
changeset
|
3215 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3216 MetaWord* Metaspace::allocate(size_t word_size, MetadataType mdtype) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3217 // DumpSharedSpaces doesn't use class metadata area (yet) |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12110
diff
changeset
|
3218 // 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
|
3219 if (is_class_space_allocation(mdtype)) { |
6885 | 3220 return class_vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3221 } else { |
6885 | 3222 return vsm()->allocate(word_size); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3223 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3224 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3225 |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3226 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
|
3227 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
|
3228 assert(delta_bytes > 0, "Must be"); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3229 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3230 size_t after_inc = MetaspaceGC::inc_capacity_until_GC(delta_bytes); |
17768
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3231 |
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3232 // capacity_until_GC might be updated concurrently, must calculate previous value. |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3233 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
|
3234 |
17768
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3235 tracer()->report_gc_threshold(before_inc, after_inc, |
daef39043d2c
8036698: Add trace event for updates to metaspace gc threshold
ehelin
parents:
17695
diff
changeset
|
3236 MetaspaceGCThresholdUpdater::ExpandAndAllocate); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3237 if (PrintGCDetails && Verbose) { |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3238 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
|
3239 " to " SIZE_FORMAT, before_inc, after_inc); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3240 } |
6885 | 3241 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3242 return allocate(word_size, mdtype); |
6753
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3243 } |
8da5e203b993
7197557: NPG: nsk/sysdict/vm/stress/chain/chain004 hangs intermittently
jmasa
parents:
6736
diff
changeset
|
3244 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
diff
changeset
|
3245 // Space allocated in the Metaspace. This may |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3246 // be across several metadata virtual spaces. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3247 char* Metaspace::bottom() const { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3248 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
|
3249 return (char*)vsm()->current_chunk()->bottom(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3250 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3251 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3252 size_t Metaspace::used_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3253 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3254 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
|
3255 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3256 return vsm()->sum_used_in_chunks_in_use(); // includes overhead! |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3257 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3258 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3259 |
12235 | 3260 size_t Metaspace::free_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3261 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3262 return using_class_space() ? class_vsm()->sum_free_in_chunks_in_use() : 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3263 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3264 return vsm()->sum_free_in_chunks_in_use(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3265 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3266 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3267 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3268 // Space capacity in the Metaspace. It includes |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3269 // space in the list of chunks from which allocations |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3270 // have been made. Don't include space in the global freelist and |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3271 // in the space available in the dictionary which |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3272 // is already counted in some chunk. |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3273 size_t Metaspace::capacity_words_slow(MetadataType mdtype) const { |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3274 if (mdtype == ClassType) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3275 return using_class_space() ? class_vsm()->sum_capacity_in_chunks_in_use() : 0; |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3276 } else { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3277 return vsm()->sum_capacity_in_chunks_in_use(); |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3278 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3279 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3280 |
10183
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3281 size_t Metaspace::used_bytes_slow(MetadataType mdtype) const { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3282 return used_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3283 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3284 |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3285 size_t Metaspace::capacity_bytes_slow(MetadataType mdtype) const { |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3286 return capacity_words_slow(mdtype) * BytesPerWord; |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3287 } |
868d87ed63c8
8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents:
10175
diff
changeset
|
3288 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3289 void Metaspace::deallocate(MetaWord* ptr, size_t word_size, bool is_class) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3290 if (SafepointSynchronize::is_at_safepoint()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3291 assert(Thread::current()->is_VM_thread(), "should be the VM thread"); |
6885 | 3292 // 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
|
3293 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
17695
ab36007d6358
8034171: Remove use of template template parameters from binaryTreeDictionary.
goetz
parents:
17663
diff
changeset
|
3294 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 3295 // Dark matter. Too small for dictionary. |
3296 #ifdef ASSERT | |
3297 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3298 #endif | |
3299 return; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3300 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3301 if (is_class && using_class_space()) { |
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3302 class_vsm()->deallocate(ptr, word_size); |
6885 | 3303 } else { |
3304 vsm()->deallocate(ptr, word_size); | |
3305 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3306 } 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
|
3307 MutexLockerEx ml(vsm()->lock(), Mutex::_no_safepoint_check_flag); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3308 |
17695
ab36007d6358
8034171: Remove use of template template parameters from binaryTreeDictionary.
goetz
parents:
17663
diff
changeset
|
3309 if (word_size < TreeChunk<Metablock, FreeList<Metablock> >::min_size()) { |
6885 | 3310 // Dark matter. Too small for dictionary. |
3311 #ifdef ASSERT | |
3312 Copy::fill_to_words((HeapWord*)ptr, word_size, 0xf5f5f5f5); | |
3313 #endif | |
3314 return; | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3315 } |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3316 if (is_class && using_class_space()) { |
6885 | 3317 class_vsm()->deallocate(ptr, word_size); |
3318 } else { | |
3319 vsm()->deallocate(ptr, word_size); | |
3320 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3321 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3322 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3323 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3324 |
12902 | 3325 MetaWord* Metaspace::allocate(ClassLoaderData* loader_data, size_t word_size, |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3326 bool read_only, MetaspaceObj::Type type, TRAPS) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3327 if (HAS_PENDING_EXCEPTION) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3328 assert(false, "Should not allocate with exception pending"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3329 return NULL; // caller does a CHECK_NULL too |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3330 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3331 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3332 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
|
3333 "ClassLoaderData::the_null_class_loader_data() should have been used."); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3334 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3335 // 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
|
3336 // 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
|
3337 // to revisit this for application class data sharing. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3338 if (DumpSharedSpaces) { |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3339 assert(type > MetaspaceObj::UnknownType && type < MetaspaceObj::_number_of_types, "sanity"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3340 Metaspace* space = read_only ? loader_data->ro_metaspace() : loader_data->rw_metaspace(); |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3341 MetaWord* result = space->allocate(word_size, NonClassType); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3342 if (result == NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3343 report_out_of_shared_space(read_only ? SharedReadOnly : SharedReadWrite); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3344 } |
12902 | 3345 |
3346 space->record_allocation(result, type, space->vsm()->get_raw_word_size(word_size)); | |
3347 | |
3348 // Zero initialize. | |
3349 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0); | |
3350 | |
3351 return result; | |
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 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3354 MetadataType mdtype = (type == MetaspaceObj::ClassType) ? ClassType : NonClassType; |
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
parents:
12340
diff
changeset
|
3356 // Try to allocate metadata. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3357 MetaWord* result = loader_data->metaspace_non_null()->allocate(word_size, mdtype); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3358 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3359 if (result == NULL) { |
17769
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3360 tracer()->report_metaspace_allocation_failure(loader_data, word_size, type, mdtype); |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
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parents:
17768
diff
changeset
|
3361 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3362 // Allocation failed. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3363 if (is_init_completed()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3364 // 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
|
3365 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3366 // 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
|
3367 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
|
3368 loader_data, word_size, mdtype); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3369 } |
85c1ca43713f
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parents:
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diff
changeset
|
3370 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3371 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3372 if (result == NULL) { |
12980
91a88c8450f4
8026698: Incorrect error handling in Metaspace::allocate
mgerdin
parents:
12979
diff
changeset
|
3373 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
|
3374 } |
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stefank
parents:
12340
diff
changeset
|
3375 |
12902 | 3376 // Zero initialize. |
3377 Copy::fill_to_aligned_words((HeapWord*)result, word_size, 0); | |
3378 | |
3379 return result; | |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3380 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3381 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3382 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
|
3383 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
|
3384 return class_vsm()->calc_chunk_size(word_size); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3385 } |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3386 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3387 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
parents:
12340
diff
changeset
|
3388 // If result is still null, we are out of memory. |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3389 if (Verbose && TraceMetadataChunkAllocation) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3390 gclog_or_tty->print_cr("Metaspace allocation failed for size " |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3391 SIZE_FORMAT, word_size); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3392 if (loader_data->metaspace_or_null() != NULL) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3393 loader_data->dump(gclog_or_tty); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3394 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3395 MetaspaceAux::dump(gclog_or_tty); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3396 } |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3397 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3398 bool out_of_compressed_class_space = false; |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3399 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
|
3400 Metaspace* metaspace = loader_data->metaspace_non_null(); |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3401 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
|
3402 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
|
3403 (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
|
3404 CompressedClassSpaceSize; |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3405 } |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3406 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3407 // -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError support |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3408 const char* space_string = out_of_compressed_class_space ? |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3409 "Compressed class space" : "Metaspace"; |
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3410 |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3411 report_java_out_of_memory(space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3412 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3413 if (JvmtiExport::should_post_resource_exhausted()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3414 JvmtiExport::post_resource_exhausted( |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3415 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR, |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3416 space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3417 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3418 |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3419 if (!is_init_completed()) { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3420 vm_exit_during_initialization("OutOfMemoryError", space_string); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3421 } |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3422 |
12998
a6177f601c64
8026822: metaspace/flags/maxMetaspaceSize throws OOM of unexpected type.java.lang.OutOfMemoryError: Compressed class space
hseigel
parents:
12906
diff
changeset
|
3423 if (out_of_compressed_class_space) { |
12838
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3424 THROW_OOP(Universe::out_of_memory_error_class_metaspace()); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3425 } else { |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3426 THROW_OOP(Universe::out_of_memory_error_metaspace()); |
85c1ca43713f
8024547: MaxMetaspaceSize should limit the committed memory used by the metaspaces
stefank
parents:
12340
diff
changeset
|
3427 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3428 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3429 |
17769
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3430 const char* Metaspace::metadata_type_name(Metaspace::MetadataType mdtype) { |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3431 switch (mdtype) { |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3432 case Metaspace::ClassType: return "Class"; |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3433 case Metaspace::NonClassType: return "Metadata"; |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3434 default: |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3435 assert(false, err_msg("Got bad mdtype: %d", (int) mdtype)); |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3436 return NULL; |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3437 } |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3438 } |
bc7714614ad8
8036699: Add trace event when a metaspace allocation fails
ehelin
parents:
17768
diff
changeset
|
3439 |
10376
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3440 void Metaspace::record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3441 assert(DumpSharedSpaces, "sanity"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3442 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3443 AllocRecord *rec = new AllocRecord((address)ptr, type, (int)word_size * HeapWordSize); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3444 if (_alloc_record_head == NULL) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3445 _alloc_record_head = _alloc_record_tail = rec; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3446 } else { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3447 _alloc_record_tail->_next = rec; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3448 _alloc_record_tail = rec; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3449 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3450 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3451 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3452 void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3453 assert(DumpSharedSpaces, "unimplemented for !DumpSharedSpaces"); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3454 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3455 address last_addr = (address)bottom(); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3456 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3457 for (AllocRecord *rec = _alloc_record_head; rec; rec = rec->_next) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3458 address ptr = rec->_ptr; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3459 if (last_addr < ptr) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3460 closure->doit(last_addr, MetaspaceObj::UnknownType, ptr - last_addr); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3461 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3462 closure->doit(ptr, rec->_type, rec->_byte_size); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3463 last_addr = ptr + rec->_byte_size; |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3464 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3465 |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3466 address top = ((address)bottom()) + used_bytes_slow(Metaspace::NonClassType); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3467 if (last_addr < top) { |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3468 closure->doit(last_addr, MetaspaceObj::UnknownType, top - last_addr); |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3469 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3470 } |
a1ebd310d5c1
8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents:
10330
diff
changeset
|
3471 |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3472 void Metaspace::purge(MetadataType mdtype) { |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3473 get_space_list(mdtype)->purge(get_chunk_manager(mdtype)); |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3474 } |
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3475 |
10175 | 3476 void Metaspace::purge() { |
3477 MutexLockerEx cl(SpaceManager::expand_lock(), | |
3478 Mutex::_no_safepoint_check_flag); | |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3479 purge(NonClassType); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3480 if (using_class_space()) { |
12303
b960c9df4f11
8025096: Move the ChunkManager instances out of the VirtualSpaceLists
stefank
parents:
12302
diff
changeset
|
3481 purge(ClassType); |
12056
740e263c80c6
8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents:
11966
diff
changeset
|
3482 } |
10175 | 3483 } |
3484 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff
changeset
|
3485 void Metaspace::print_on(outputStream* out) const { |
da91efe96a93
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3486 // Print both class virtual space counts and metaspace. |
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|
3487 if (Verbose) { |
12056
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|
3488 vsm()->print_on(out); |
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|
3489 if (using_class_space()) { |
6725
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|
3490 class_vsm()->print_on(out); |
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|
3491 } |
6725
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|
3492 } |
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|
3493 } |
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|
3494 |
17663
40353abd7984
8029178: Parallel class loading test anonymous-simple gets SIGSEGV in Metaspace::contains
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13439
diff
changeset
|
3495 bool Metaspace::contains(const void* ptr) { |
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|
3496 if (vsm()->contains(ptr)) return true; |
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|
3497 if (using_class_space()) { |
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|
3498 return class_vsm()->contains(ptr); |
6725
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|
3499 } |
17663
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|
3500 return false; |
6725
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|
3501 } |
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|
3502 |
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|
3503 void Metaspace::verify() { |
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changeset
|
3504 vsm()->verify(); |
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changeset
|
3505 if (using_class_space()) { |
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changeset
|
3506 class_vsm()->verify(); |
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|
3507 } |
6725
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|
3508 } |
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|
3509 |
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|
3510 void Metaspace::dump(outputStream* const out) const { |
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|
3511 out->print_cr("\nVirtual space manager: " INTPTR_FORMAT, vsm()); |
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|
3512 vsm()->dump(out); |
12056
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|
3513 if (using_class_space()) { |
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|
3514 out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm()); |
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|
3515 class_vsm()->dump(out); |
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|
3516 } |
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|
3517 } |
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3518 |
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3519 /////////////// Unit tests /////////////// |
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3520 |
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|
3521 #ifndef PRODUCT |
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3522 |
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8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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3523 class TestMetaspaceAuxTest : AllStatic { |
12236
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|
3524 public: |
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|
3525 static void test_reserved() { |
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|
3526 size_t reserved = MetaspaceAux::reserved_bytes(); |
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|
3527 |
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|
3528 assert(reserved > 0, "assert"); |
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|
3529 |
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|
3530 size_t committed = MetaspaceAux::committed_bytes(); |
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|
3531 assert(committed <= reserved, "assert"); |
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|
3532 |
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|
3533 size_t reserved_metadata = MetaspaceAux::reserved_bytes(Metaspace::NonClassType); |
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|
3534 assert(reserved_metadata > 0, "assert"); |
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|
3535 assert(reserved_metadata <= reserved, "assert"); |
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|
3536 |
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|
3537 if (UseCompressedClassPointers) { |
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|
3538 size_t reserved_class = MetaspaceAux::reserved_bytes(Metaspace::ClassType); |
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|
3539 assert(reserved_class > 0, "assert"); |
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|
3540 assert(reserved_class < reserved, "assert"); |
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|
3541 } |
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|
3542 } |
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|
3543 |
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|
3544 static void test_committed() { |
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|
3545 size_t committed = MetaspaceAux::committed_bytes(); |
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|
3546 |
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|
3547 assert(committed > 0, "assert"); |
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|
3548 |
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|
3549 size_t reserved = MetaspaceAux::reserved_bytes(); |
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|
3550 assert(committed <= reserved, "assert"); |
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|
3551 |
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|
3552 size_t committed_metadata = MetaspaceAux::committed_bytes(Metaspace::NonClassType); |
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|
3553 assert(committed_metadata > 0, "assert"); |
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|
3554 assert(committed_metadata <= committed, "assert"); |
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|
3555 |
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|
3556 if (UseCompressedClassPointers) { |
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|
3557 size_t committed_class = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
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8024638: Count and expose the amount of committed memory in the metaspaces
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|
3558 assert(committed_class > 0, "assert"); |
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8024638: Count and expose the amount of committed memory in the metaspaces
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diff
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|
3559 assert(committed_class < committed, "assert"); |
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8024638: Count and expose the amount of committed memory in the metaspaces
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diff
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|
3560 } |
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8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
3561 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
3562 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
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|
3563 static void test_virtual_space_list_large_chunk() { |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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diff
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|
3564 VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity()); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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diff
changeset
|
3565 MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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diff
changeset
|
3566 // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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diff
changeset
|
3567 // vm_allocation_granularity aligned on Windows. |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3568 size_t large_size = (size_t)(2*256*K + (os::vm_page_size()/BytesPerWord)); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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diff
changeset
|
3569 large_size += (os::vm_page_size()/BytesPerWord); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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diff
changeset
|
3570 vs_list->get_new_chunk(large_size, large_size, 0); |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
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diff
changeset
|
3571 } |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
parents:
12303
diff
changeset
|
3572 |
12236
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|
3573 static void test() { |
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diff
changeset
|
3574 test_reserved(); |
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8024638: Count and expose the amount of committed memory in the metaspaces
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diff
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|
3575 test_committed(); |
12306
03f493ce3a71
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|
3576 test_virtual_space_list_large_chunk(); |
12236
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|
3577 } |
c4c768305a8f
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
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|
3578 }; |
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changeset
|
3579 |
12306
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
brutisso
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diff
changeset
|
3580 void TestMetaspaceAux_test() { |
03f493ce3a71
8025228: assert(new_entry->reserved_words() == vs_word_size) fails in nightly
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|
3581 TestMetaspaceAuxTest::test(); |
12236
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|
3582 } |
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|
3583 |
12979
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
mgerdin
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diff
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|
3584 class TestVirtualSpaceNodeTest { |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3585 static void chunk_up(size_t words_left, size_t& num_medium_chunks, |
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|
3586 size_t& num_small_chunks, |
1d1ea10fe09f
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|
3587 size_t& num_specialized_chunks) { |
1d1ea10fe09f
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|
3588 num_medium_chunks = words_left / MediumChunk; |
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|
3589 words_left = words_left % MediumChunk; |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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12906
diff
changeset
|
3590 |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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diff
changeset
|
3591 num_small_chunks = words_left / SmallChunk; |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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|
3592 words_left = words_left % SmallChunk; |
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|
3593 // how many specialized chunks can we get? |
1d1ea10fe09f
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changeset
|
3594 num_specialized_chunks = words_left / SpecializedChunk; |
1d1ea10fe09f
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changeset
|
3595 assert(words_left % SpecializedChunk == 0, "should be nothing left"); |
1d1ea10fe09f
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mgerdin
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changeset
|
3596 } |
1d1ea10fe09f
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diff
changeset
|
3597 |
1d1ea10fe09f
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diff
changeset
|
3598 public: |
1d1ea10fe09f
8015255: NPG: Don't waste fragment at the end of a VirtualSpaceNode before retiring it.
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changeset
|
3599 static void test() { |
1d1ea10fe09f
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diff
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|
3600 MutexLockerEx ml(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag); |
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|
3601 const size_t vsn_test_size_words = MediumChunk * 4; |
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|
3602 const size_t vsn_test_size_bytes = vsn_test_size_words * BytesPerWord; |
1d1ea10fe09f
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|
3603 |
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changeset
|
3604 // The chunk sizes must be multiples of eachother, or this will fail |
1d1ea10fe09f
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changeset
|
3605 STATIC_ASSERT(MediumChunk % SmallChunk == 0); |
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3606 STATIC_ASSERT(SmallChunk % SpecializedChunk == 0); |
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|
3607 |
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3608 { // No committed memory in VSN |
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3609 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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3610 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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3611 vsn.initialize(); |
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3612 vsn.retire(&cm); |
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3613 assert(cm.sum_free_chunks_count() == 0, "did not commit any memory in the VSN"); |
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|
3614 } |
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|
3615 |
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3616 { // All of VSN is committed, half is used by chunks |
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3617 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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3618 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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3619 vsn.initialize(); |
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3620 vsn.expand_by(vsn_test_size_words, vsn_test_size_words); |
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3621 vsn.get_chunk_vs(MediumChunk); |
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3622 vsn.get_chunk_vs(MediumChunk); |
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|
3623 vsn.retire(&cm); |
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3624 assert(cm.sum_free_chunks_count() == 2, "should have been memory left for 2 medium chunks"); |
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3625 assert(cm.sum_free_chunks() == 2*MediumChunk, "sizes should add up"); |
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|
3626 } |
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|
3627 |
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3628 { // 4 pages of VSN is committed, some is used by chunks |
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3629 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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3630 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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3631 const size_t page_chunks = 4 * (size_t)os::vm_page_size() / BytesPerWord; |
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3632 assert(page_chunks < MediumChunk, "Test expects medium chunks to be at least 4*page_size"); |
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3633 vsn.initialize(); |
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3634 vsn.expand_by(page_chunks, page_chunks); |
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|
3635 vsn.get_chunk_vs(SmallChunk); |
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|
3636 vsn.get_chunk_vs(SpecializedChunk); |
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|
3637 vsn.retire(&cm); |
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|
3638 |
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3639 // committed - used = words left to retire |
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3640 const size_t words_left = page_chunks - SmallChunk - SpecializedChunk; |
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|
3641 |
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3642 size_t num_medium_chunks, num_small_chunks, num_spec_chunks; |
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3643 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks); |
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|
3644 |
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|
3645 assert(num_medium_chunks == 0, "should not get any medium chunks"); |
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3646 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks"); |
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|
3647 assert(cm.sum_free_chunks() == words_left, "sizes should add up"); |
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|
3648 } |
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|
3649 |
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3650 { // Half of VSN is committed, a humongous chunk is used |
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3651 ChunkManager cm(SpecializedChunk, SmallChunk, MediumChunk); |
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3652 VirtualSpaceNode vsn(vsn_test_size_bytes); |
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|
3653 vsn.initialize(); |
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3654 vsn.expand_by(MediumChunk * 2, MediumChunk * 2); |
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|
3655 vsn.get_chunk_vs(MediumChunk + SpecializedChunk); // Humongous chunks will be aligned up to MediumChunk + SpecializedChunk |
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|
3656 vsn.retire(&cm); |
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|
3657 |
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3658 const size_t words_left = MediumChunk * 2 - (MediumChunk + SpecializedChunk); |
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3659 size_t num_medium_chunks, num_small_chunks, num_spec_chunks; |
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3660 chunk_up(words_left, num_medium_chunks, num_small_chunks, num_spec_chunks); |
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|
3661 |
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|
3662 assert(num_medium_chunks == 0, "should not get any medium chunks"); |
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|
3663 assert(cm.sum_free_chunks_count() == (num_small_chunks + num_spec_chunks), "should be space for 3 chunks"); |
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|
3664 assert(cm.sum_free_chunks() == words_left, "sizes should add up"); |
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|
3665 } |
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|
3666 |
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|
3667 } |
13439
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|
3668 |
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|
3669 #define assert_is_available_positive(word_size) \ |
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|
3670 assert(vsn.is_available(word_size), \ |
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|
3671 err_msg(#word_size ": " PTR_FORMAT " bytes were not available in " \ |
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|
3672 "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \ |
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|
3673 (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end())); |
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|
3674 |
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|
3675 #define assert_is_available_negative(word_size) \ |
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|
3676 assert(!vsn.is_available(word_size), \ |
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|
3677 err_msg(#word_size ": " PTR_FORMAT " bytes should not be available in " \ |
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|
3678 "VirtualSpaceNode [" PTR_FORMAT ", " PTR_FORMAT ")", \ |
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|
3679 (uintptr_t)(word_size * BytesPerWord), vsn.bottom(), vsn.end())); |
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|
3680 |
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|
3681 static void test_is_available_positive() { |
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|
3682 // Reserve some memory. |
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|
3683 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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|
3684 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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|
3685 |
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|
3686 // Commit some memory. |
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|
3687 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3688 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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|
3689 assert(expanded, "Failed to commit"); |
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|
3690 |
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|
3691 // Check that is_available accepts the committed size. |
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|
3692 assert_is_available_positive(commit_word_size); |
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|
3693 |
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3694 // Check that is_available accepts half the committed size. |
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3695 size_t expand_word_size = commit_word_size / 2; |
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|
3696 assert_is_available_positive(expand_word_size); |
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3697 } |
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|
3698 |
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|
3699 static void test_is_available_negative() { |
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3700 // Reserve some memory. |
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|
3701 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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|
3702 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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|
3703 |
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|
3704 // Commit some memory. |
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|
3705 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3706 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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|
3707 assert(expanded, "Failed to commit"); |
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3708 |
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3709 // Check that is_available doesn't accept a too large size. |
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3710 size_t two_times_commit_word_size = commit_word_size * 2; |
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3711 assert_is_available_negative(two_times_commit_word_size); |
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3712 } |
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3713 |
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3714 static void test_is_available_overflow() { |
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3715 // Reserve some memory. |
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3716 VirtualSpaceNode vsn(os::vm_allocation_granularity()); |
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3717 assert(vsn.initialize(), "Failed to setup VirtualSpaceNode"); |
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3718 |
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3719 // Commit some memory. |
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3720 size_t commit_word_size = os::vm_allocation_granularity() / BytesPerWord; |
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3721 bool expanded = vsn.expand_by(commit_word_size, commit_word_size); |
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3722 assert(expanded, "Failed to commit"); |
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3723 |
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3724 // Calculate a size that will overflow the virtual space size. |
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3725 void* virtual_space_max = (void*)(uintptr_t)-1; |
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3726 size_t bottom_to_max = pointer_delta(virtual_space_max, vsn.bottom(), 1); |
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3727 size_t overflow_size = bottom_to_max + BytesPerWord; |
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3728 size_t overflow_word_size = overflow_size / BytesPerWord; |
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3729 |
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3730 // Check that is_available can handle the overflow. |
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3731 assert_is_available_negative(overflow_word_size); |
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3732 } |
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3733 |
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3734 static void test_is_available() { |
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3735 TestVirtualSpaceNodeTest::test_is_available_positive(); |
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3736 TestVirtualSpaceNodeTest::test_is_available_negative(); |
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3737 TestVirtualSpaceNodeTest::test_is_available_overflow(); |
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3738 } |
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3739 }; |
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3740 |
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3741 void TestVirtualSpaceNode_test() { |
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3742 TestVirtualSpaceNodeTest::test(); |
13439
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3743 TestVirtualSpaceNodeTest::test_is_available(); |
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3744 } |
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3745 |
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3746 #endif |