Mercurial > hg > truffle
annotate src/share/vm/services/memBaseline.cpp @ 7464:ecd24264898b
8005048: NMT: #loaded classes needs to just show the # defined classes
Summary: Count number of instance classes so that it matches class metadata size
Reviewed-by: coleenp, acorn
| author | zgu |
|---|---|
| date | Tue, 08 Jan 2013 14:04:25 -0500 |
| parents | fb3190e77d3c |
| children | 4102b59539ce |
| rev | line source |
|---|---|
| 6197 | 1 /* |
| 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 #include "precompiled.hpp" | |
| 25 #include "memory/allocation.hpp" | |
| 26 #include "services/memBaseline.hpp" | |
| 27 #include "services/memTracker.hpp" | |
| 28 | |
| 29 MemType2Name MemBaseline::MemType2NameMap[NUMBER_OF_MEMORY_TYPE] = { | |
| 30 {mtJavaHeap, "Java Heap"}, | |
| 31 {mtClass, "Class"}, | |
| 32 {mtThreadStack,"Thread Stack"}, | |
| 33 {mtThread, "Thread"}, | |
| 34 {mtCode, "Code"}, | |
| 35 {mtGC, "GC"}, | |
| 36 {mtCompiler, "Compiler"}, | |
| 37 {mtInternal, "Internal"}, | |
| 38 {mtOther, "Other"}, | |
| 39 {mtSymbol, "Symbol"}, | |
| 40 {mtNMT, "Memory Tracking"}, | |
| 41 {mtChunk, "Pooled Free Chunks"}, | |
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42 {mtClassShared,"Shared spaces for classes"}, |
| 6197 | 43 {mtNone, "Unknown"} // It can happen when type tagging records are lagging |
| 44 // behind | |
| 45 }; | |
| 46 | |
| 47 MemBaseline::MemBaseline() { | |
| 48 _baselined = false; | |
| 49 | |
| 50 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
| 51 _malloc_data[index].set_type(MemType2NameMap[index]._flag); | |
| 52 _vm_data[index].set_type(MemType2NameMap[index]._flag); | |
| 53 _arena_data[index].set_type(MemType2NameMap[index]._flag); | |
| 54 } | |
| 55 | |
| 56 _malloc_cs = NULL; | |
| 57 _vm_cs = NULL; | |
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58 _vm_map = NULL; |
| 6197 | 59 |
| 60 _number_of_classes = 0; | |
| 61 _number_of_threads = 0; | |
| 62 } | |
| 63 | |
| 64 | |
| 65 void MemBaseline::clear() { | |
| 66 if (_malloc_cs != NULL) { | |
| 67 delete _malloc_cs; | |
| 68 _malloc_cs = NULL; | |
| 69 } | |
| 70 | |
| 71 if (_vm_cs != NULL) { | |
| 72 delete _vm_cs; | |
| 73 _vm_cs = NULL; | |
| 74 } | |
| 75 | |
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76 if (_vm_map != NULL) { |
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77 delete _vm_map; |
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78 _vm_map = NULL; |
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79 } |
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80 |
| 6197 | 81 reset(); |
| 82 } | |
| 83 | |
| 84 | |
| 85 void MemBaseline::reset() { | |
| 86 _baselined = false; | |
| 87 _total_vm_reserved = 0; | |
| 88 _total_vm_committed = 0; | |
| 89 _total_malloced = 0; | |
| 90 _number_of_classes = 0; | |
| 91 | |
| 92 if (_malloc_cs != NULL) _malloc_cs->clear(); | |
| 93 if (_vm_cs != NULL) _vm_cs->clear(); | |
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94 if (_vm_map != NULL) _vm_map->clear(); |
| 6197 | 95 |
| 96 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
| 97 _malloc_data[index].clear(); | |
| 98 _vm_data[index].clear(); | |
| 99 _arena_data[index].clear(); | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 MemBaseline::~MemBaseline() { | |
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104 clear(); |
| 6197 | 105 } |
| 106 | |
| 107 // baseline malloc'd memory records, generate overall summary and summaries by | |
| 108 // memory types | |
| 109 bool MemBaseline::baseline_malloc_summary(const MemPointerArray* malloc_records) { | |
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110 MemPointerArrayIteratorImpl malloc_itr((MemPointerArray*)malloc_records); |
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111 MemPointerRecord* malloc_ptr = (MemPointerRecord*)malloc_itr.current(); |
| 6197 | 112 size_t used_arena_size = 0; |
| 113 int index; | |
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114 while (malloc_ptr != NULL) { |
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115 index = flag2index(FLAGS_TO_MEMORY_TYPE(malloc_ptr->flags())); |
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116 size_t size = malloc_ptr->size(); |
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117 if (malloc_ptr->is_arena_memory_record()) { |
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118 // We do have anonymous arenas, they are either used as value objects, |
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119 // which are embedded inside other objects, or used as stack objects. |
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120 _arena_data[index].inc(size); |
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121 used_arena_size += size; |
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122 } else { |
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123 _total_malloced += size; |
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124 _malloc_data[index].inc(size); |
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125 if (malloc_ptr->is_arena_record()) { |
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126 // see if arena memory record present |
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127 MemPointerRecord* next_malloc_ptr = (MemPointerRecordEx*)malloc_itr.peek_next(); |
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128 if (next_malloc_ptr->is_arena_memory_record()) { |
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129 assert(next_malloc_ptr->is_memory_record_of_arena(malloc_ptr), |
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130 "Arena records do not match"); |
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131 size = next_malloc_ptr->size(); |
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132 _arena_data[index].inc(size); |
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133 used_arena_size += size; |
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134 malloc_itr.next(); |
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135 } |
| 6197 | 136 } |
| 137 } | |
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138 malloc_ptr = (MemPointerRecordEx*)malloc_itr.next(); |
| 6197 | 139 } |
| 140 | |
| 141 // substract used arena size to get size of arena chunk in free list | |
| 142 index = flag2index(mtChunk); | |
| 143 _malloc_data[index].reduce(used_arena_size); | |
| 144 // we really don't know how many chunks in free list, so just set to | |
| 145 // 0 | |
| 146 _malloc_data[index].overwrite_counter(0); | |
| 147 | |
| 148 return true; | |
| 149 } | |
| 150 | |
| 151 // baseline mmap'd memory records, generate overall summary and summaries by | |
| 152 // memory types | |
| 153 bool MemBaseline::baseline_vm_summary(const MemPointerArray* vm_records) { | |
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154 MemPointerArrayIteratorImpl vm_itr((MemPointerArray*)vm_records); |
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155 VMMemRegion* vm_ptr = (VMMemRegion*)vm_itr.current(); |
| 6197 | 156 int index; |
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157 while (vm_ptr != NULL) { |
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158 if (vm_ptr->is_reserved_region()) { |
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159 index = flag2index(FLAGS_TO_MEMORY_TYPE(vm_ptr->flags())); |
| 6197 | 160 // we use the number of thread stack to count threads |
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161 if (IS_MEMORY_TYPE(vm_ptr->flags(), mtThreadStack)) { |
| 6197 | 162 _number_of_threads ++; |
| 163 } | |
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164 _total_vm_reserved += vm_ptr->size(); |
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165 _vm_data[index].inc(vm_ptr->size(), 0); |
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166 } else { |
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167 _total_vm_committed += vm_ptr->size(); |
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168 _vm_data[index].inc(0, vm_ptr->size()); |
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169 } |
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170 vm_ptr = (VMMemRegion*)vm_itr.next(); |
| 6197 | 171 } |
| 172 return true; | |
| 173 } | |
| 174 | |
| 175 // baseline malloc'd memory by callsites, but only the callsites with memory allocation | |
| 176 // over 1KB are stored. | |
| 177 bool MemBaseline::baseline_malloc_details(const MemPointerArray* malloc_records) { | |
| 178 assert(MemTracker::track_callsite(), "detail tracking is off"); | |
| 179 | |
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180 MemPointerArrayIteratorImpl malloc_itr(const_cast<MemPointerArray*>(malloc_records)); |
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181 MemPointerRecordEx* malloc_ptr = (MemPointerRecordEx*)malloc_itr.current(); |
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182 MallocCallsitePointer malloc_callsite; |
| 6197 | 183 |
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184 // initailize malloc callsite array |
| 6197 | 185 if (_malloc_cs == NULL) { |
| 186 _malloc_cs = new (std::nothrow) MemPointerArrayImpl<MallocCallsitePointer>(64); | |
| 187 // out of native memory | |
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188 if (_malloc_cs == NULL || _malloc_cs->out_of_memory()) { |
| 6197 | 189 return false; |
| 190 } | |
| 191 } else { | |
| 192 _malloc_cs->clear(); | |
| 193 } | |
| 194 | |
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195 MemPointerArray* malloc_data = const_cast<MemPointerArray*>(malloc_records); |
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196 |
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197 // sort into callsite pc order. Details are aggregated by callsites |
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198 malloc_data->sort((FN_SORT)malloc_sort_by_pc); |
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199 bool ret = true; |
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200 |
| 6197 | 201 // baseline memory that is totaled over 1 KB |
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202 while (malloc_ptr != NULL) { |
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203 if (!MemPointerRecord::is_arena_memory_record(malloc_ptr->flags())) { |
| 6197 | 204 // skip thread stacks |
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205 if (!IS_MEMORY_TYPE(malloc_ptr->flags(), mtThreadStack)) { |
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206 if (malloc_callsite.addr() != malloc_ptr->pc()) { |
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207 if ((malloc_callsite.amount()/K) > 0) { |
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208 if (!_malloc_cs->append(&malloc_callsite)) { |
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209 ret = false; |
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210 break; |
| 6197 | 211 } |
| 212 } | |
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213 malloc_callsite = MallocCallsitePointer(malloc_ptr->pc()); |
| 6197 | 214 } |
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215 malloc_callsite.inc(malloc_ptr->size()); |
| 6197 | 216 } |
| 217 } | |
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218 malloc_ptr = (MemPointerRecordEx*)malloc_itr.next(); |
| 6197 | 219 } |
| 220 | |
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221 // restore to address order. Snapshot malloc data is maintained in memory |
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222 // address order. |
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223 malloc_data->sort((FN_SORT)malloc_sort_by_addr); |
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224 |
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225 if (!ret) { |
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226 return false; |
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227 } |
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228 // deal with last record |
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229 if (malloc_callsite.addr() != 0 && (malloc_callsite.amount()/K) > 0) { |
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230 if (!_malloc_cs->append(&malloc_callsite)) { |
| 6197 | 231 return false; |
| 232 } | |
| 233 } | |
| 234 return true; | |
| 235 } | |
| 236 | |
| 237 // baseline mmap'd memory by callsites | |
| 238 bool MemBaseline::baseline_vm_details(const MemPointerArray* vm_records) { | |
| 239 assert(MemTracker::track_callsite(), "detail tracking is off"); | |
| 240 | |
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241 VMCallsitePointer vm_callsite; |
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242 VMCallsitePointer* cur_callsite = NULL; |
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243 MemPointerArrayIteratorImpl vm_itr((MemPointerArray*)vm_records); |
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244 VMMemRegionEx* vm_ptr = (VMMemRegionEx*)vm_itr.current(); |
| 6197 | 245 |
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246 // initialize virtual memory map array |
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247 if (_vm_map == NULL) { |
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248 _vm_map = new (std::nothrow) MemPointerArrayImpl<VMMemRegionEx>(vm_records->length()); |
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249 if (_vm_map == NULL || _vm_map->out_of_memory()) { |
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250 return false; |
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251 } |
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252 } else { |
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253 _vm_map->clear(); |
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254 } |
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255 |
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256 // initialize virtual memory callsite array |
| 6197 | 257 if (_vm_cs == NULL) { |
| 258 _vm_cs = new (std::nothrow) MemPointerArrayImpl<VMCallsitePointer>(64); | |
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259 if (_vm_cs == NULL || _vm_cs->out_of_memory()) { |
| 6197 | 260 return false; |
| 261 } | |
| 262 } else { | |
| 263 _vm_cs->clear(); | |
| 264 } | |
| 265 | |
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266 // consolidate virtual memory data |
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267 VMMemRegionEx* reserved_rec = NULL; |
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268 VMMemRegionEx* committed_rec = NULL; |
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269 |
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270 // vm_ptr is coming in increasing base address order |
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271 while (vm_ptr != NULL) { |
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272 if (vm_ptr->is_reserved_region()) { |
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273 // consolidate reserved memory regions for virtual memory map. |
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274 // The criteria for consolidation is: |
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275 // 1. two adjacent reserved memory regions |
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276 // 2. belong to the same memory type |
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277 // 3. reserved from the same callsite |
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278 if (reserved_rec == NULL || |
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279 reserved_rec->base() + reserved_rec->size() != vm_ptr->addr() || |
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280 FLAGS_TO_MEMORY_TYPE(reserved_rec->flags()) != FLAGS_TO_MEMORY_TYPE(vm_ptr->flags()) || |
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281 reserved_rec->pc() != vm_ptr->pc()) { |
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282 if (!_vm_map->append(vm_ptr)) { |
| 6197 | 283 return false; |
| 284 } | |
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285 // inserted reserved region, we need the pointer to the element in virtual |
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286 // memory map array. |
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287 reserved_rec = (VMMemRegionEx*)_vm_map->at(_vm_map->length() - 1); |
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288 } else { |
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289 reserved_rec->expand_region(vm_ptr->addr(), vm_ptr->size()); |
| 6197 | 290 } |
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291 |
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292 if (cur_callsite != NULL && !_vm_cs->append(cur_callsite)) { |
| 6197 | 293 return false; |
| 294 } | |
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295 vm_callsite = VMCallsitePointer(vm_ptr->pc()); |
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296 cur_callsite = &vm_callsite; |
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297 vm_callsite.inc(vm_ptr->size(), 0); |
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298 } else { |
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299 // consolidate committed memory regions for virtual memory map |
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300 // The criterial is: |
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301 // 1. two adjacent committed memory regions |
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302 // 2. committed from the same callsite |
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303 if (committed_rec == NULL || |
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304 committed_rec->base() + committed_rec->size() != vm_ptr->addr() || |
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305 committed_rec->pc() != vm_ptr->pc()) { |
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306 if (!_vm_map->append(vm_ptr)) { |
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307 return false; |
| 6197 | 308 } |
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309 committed_rec = (VMMemRegionEx*)_vm_map->at(_vm_map->length() - 1); |
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310 } else { |
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311 committed_rec->expand_region(vm_ptr->addr(), vm_ptr->size()); |
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312 } |
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313 vm_callsite.inc(0, vm_ptr->size()); |
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314 } |
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315 vm_ptr = (VMMemRegionEx*)vm_itr.next(); |
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316 } |
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317 // deal with last record |
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318 if (cur_callsite != NULL && !_vm_cs->append(cur_callsite)) { |
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319 return false; |
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320 } |
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321 |
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322 // sort it into callsite pc order. Details are aggregated by callsites |
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323 _vm_cs->sort((FN_SORT)bl_vm_sort_by_pc); |
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324 |
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325 // walk the array to consolidate record by pc |
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326 MemPointerArrayIteratorImpl itr(_vm_cs); |
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327 VMCallsitePointer* callsite_rec = (VMCallsitePointer*)itr.current(); |
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328 VMCallsitePointer* next_rec = (VMCallsitePointer*)itr.next(); |
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329 while (next_rec != NULL) { |
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330 assert(callsite_rec != NULL, "Sanity check"); |
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331 if (next_rec->addr() == callsite_rec->addr()) { |
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332 callsite_rec->inc(next_rec->reserved_amount(), next_rec->committed_amount()); |
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333 itr.remove(); |
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334 next_rec = (VMCallsitePointer*)itr.current(); |
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335 } else { |
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336 callsite_rec = next_rec; |
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337 next_rec = (VMCallsitePointer*)itr.next(); |
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338 } |
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339 } |
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340 |
| 6197 | 341 return true; |
| 342 } | |
| 343 | |
| 344 // baseline a snapshot. If summary_only = false, memory usages aggregated by | |
| 345 // callsites are also baselined. | |
| 346 bool MemBaseline::baseline(MemSnapshot& snapshot, bool summary_only) { | |
| 347 MutexLockerEx snapshot_locker(snapshot._lock, true); | |
| 348 reset(); | |
| 349 _baselined = baseline_malloc_summary(snapshot._alloc_ptrs) && | |
| 350 baseline_vm_summary(snapshot._vm_ptrs); | |
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351 _number_of_classes = snapshot.number_of_classes(); |
| 6197 | 352 |
| 353 if (!summary_only && MemTracker::track_callsite() && _baselined) { | |
| 354 _baselined = baseline_malloc_details(snapshot._alloc_ptrs) && | |
| 355 baseline_vm_details(snapshot._vm_ptrs); | |
| 356 } | |
| 357 return _baselined; | |
| 358 } | |
| 359 | |
| 360 | |
| 361 int MemBaseline::flag2index(MEMFLAGS flag) const { | |
| 362 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
| 363 if (MemType2NameMap[index]._flag == flag) { | |
| 364 return index; | |
| 365 } | |
| 366 } | |
| 367 assert(false, "no type"); | |
| 368 return -1; | |
| 369 } | |
| 370 | |
| 371 const char* MemBaseline::type2name(MEMFLAGS type) { | |
| 372 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
| 373 if (MemType2NameMap[index]._flag == type) { | |
| 374 return MemType2NameMap[index]._name; | |
| 375 } | |
| 376 } | |
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377 assert(false, err_msg("bad type %x", type)); |
| 6197 | 378 return NULL; |
| 379 } | |
| 380 | |
| 381 | |
| 382 MemBaseline& MemBaseline::operator=(const MemBaseline& other) { | |
| 383 _total_malloced = other._total_malloced; | |
| 384 _total_vm_reserved = other._total_vm_reserved; | |
| 385 _total_vm_committed = other._total_vm_committed; | |
| 386 | |
| 387 _baselined = other._baselined; | |
| 388 _number_of_classes = other._number_of_classes; | |
| 389 | |
| 390 for (int index = 0; index < NUMBER_OF_MEMORY_TYPE; index ++) { | |
| 391 _malloc_data[index] = other._malloc_data[index]; | |
| 392 _vm_data[index] = other._vm_data[index]; | |
| 393 _arena_data[index] = other._arena_data[index]; | |
| 394 } | |
| 395 | |
| 396 if (MemTracker::track_callsite()) { | |
| 397 assert(_malloc_cs != NULL && _vm_cs != NULL, "out of memory"); | |
| 398 assert(other._malloc_cs != NULL && other._vm_cs != NULL, | |
| 399 "not properly baselined"); | |
| 400 _malloc_cs->clear(); | |
| 401 _vm_cs->clear(); | |
| 402 int index; | |
| 403 for (index = 0; index < other._malloc_cs->length(); index ++) { | |
| 404 _malloc_cs->append(other._malloc_cs->at(index)); | |
| 405 } | |
| 406 | |
| 407 for (index = 0; index < other._vm_cs->length(); index ++) { | |
| 408 _vm_cs->append(other._vm_cs->at(index)); | |
| 409 } | |
| 410 } | |
| 411 return *this; | |
| 412 } | |
| 413 | |
| 414 /* compare functions for sorting */ | |
| 415 | |
| 416 // sort snapshot malloc'd records in callsite pc order | |
| 417 int MemBaseline::malloc_sort_by_pc(const void* p1, const void* p2) { | |
| 418 assert(MemTracker::track_callsite(),"Just check"); | |
| 419 const MemPointerRecordEx* mp1 = (const MemPointerRecordEx*)p1; | |
| 420 const MemPointerRecordEx* mp2 = (const MemPointerRecordEx*)p2; | |
| 421 return UNSIGNED_COMPARE(mp1->pc(), mp2->pc()); | |
| 422 } | |
| 423 | |
| 424 // sort baselined malloc'd records in size order | |
| 425 int MemBaseline::bl_malloc_sort_by_size(const void* p1, const void* p2) { | |
| 426 assert(MemTracker::is_on(), "Just check"); | |
| 427 const MallocCallsitePointer* mp1 = (const MallocCallsitePointer*)p1; | |
| 428 const MallocCallsitePointer* mp2 = (const MallocCallsitePointer*)p2; | |
| 429 return UNSIGNED_COMPARE(mp2->amount(), mp1->amount()); | |
| 430 } | |
| 431 | |
| 432 // sort baselined malloc'd records in callsite pc order | |
| 433 int MemBaseline::bl_malloc_sort_by_pc(const void* p1, const void* p2) { | |
| 434 assert(MemTracker::is_on(), "Just check"); | |
| 435 const MallocCallsitePointer* mp1 = (const MallocCallsitePointer*)p1; | |
| 436 const MallocCallsitePointer* mp2 = (const MallocCallsitePointer*)p2; | |
| 437 return UNSIGNED_COMPARE(mp1->addr(), mp2->addr()); | |
| 438 } | |
| 439 | |
| 440 | |
| 441 // sort baselined mmap'd records in size (reserved size) order | |
| 442 int MemBaseline::bl_vm_sort_by_size(const void* p1, const void* p2) { | |
| 443 assert(MemTracker::is_on(), "Just check"); | |
| 444 const VMCallsitePointer* mp1 = (const VMCallsitePointer*)p1; | |
| 445 const VMCallsitePointer* mp2 = (const VMCallsitePointer*)p2; | |
| 446 return UNSIGNED_COMPARE(mp2->reserved_amount(), mp1->reserved_amount()); | |
| 447 } | |
| 448 | |
| 449 // sort baselined mmap'd records in callsite pc order | |
| 450 int MemBaseline::bl_vm_sort_by_pc(const void* p1, const void* p2) { | |
| 451 assert(MemTracker::is_on(), "Just check"); | |
| 452 const VMCallsitePointer* mp1 = (const VMCallsitePointer*)p1; | |
| 453 const VMCallsitePointer* mp2 = (const VMCallsitePointer*)p2; | |
| 454 return UNSIGNED_COMPARE(mp1->addr(), mp2->addr()); | |
| 455 } | |
| 456 | |
| 457 | |
| 458 // sort snapshot malloc'd records in memory block address order | |
| 459 int MemBaseline::malloc_sort_by_addr(const void* p1, const void* p2) { | |
| 460 assert(MemTracker::is_on(), "Just check"); | |
| 461 const MemPointerRecord* mp1 = (const MemPointerRecord*)p1; | |
| 462 const MemPointerRecord* mp2 = (const MemPointerRecord*)p2; | |
| 463 int delta = UNSIGNED_COMPARE(mp1->addr(), mp2->addr()); | |
| 464 assert(delta != 0, "dup pointer"); | |
| 465 return delta; | |
| 466 } | |
| 467 |