Mercurial > hg > graal-compiler
annotate src/share/vm/services/memoryService.cpp @ 1703:f6f3eef8a521
6581734: CMS Old Gen's collection usage is zero after GC which is incorrect
Summary: Management code enabled for use by a concurrent collector.
Reviewed-by: mchung, ysr
| author | kevinw |
|---|---|
| date | Fri, 30 Jul 2010 22:43:50 +0100 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_memoryService.cpp.incl" | |
| 27 | |
| 28 GrowableArray<MemoryPool*>* MemoryService::_pools_list = | |
| 29 new (ResourceObj::C_HEAP) GrowableArray<MemoryPool*>(init_pools_list_size, true); | |
| 30 GrowableArray<MemoryManager*>* MemoryService::_managers_list = | |
| 31 new (ResourceObj::C_HEAP) GrowableArray<MemoryManager*>(init_managers_list_size, true); | |
| 32 | |
| 33 GCMemoryManager* MemoryService::_minor_gc_manager = NULL; | |
| 34 GCMemoryManager* MemoryService::_major_gc_manager = NULL; | |
| 35 MemoryPool* MemoryService::_code_heap_pool = NULL; | |
| 36 | |
| 37 class GcThreadCountClosure: public ThreadClosure { | |
| 38 private: | |
| 39 int _count; | |
| 40 public: | |
| 41 GcThreadCountClosure() : _count(0) {}; | |
| 42 void do_thread(Thread* thread); | |
| 43 int count() { return _count; } | |
| 44 }; | |
| 45 | |
| 46 void GcThreadCountClosure::do_thread(Thread* thread) { | |
| 47 _count++; | |
| 48 } | |
| 49 | |
| 50 void MemoryService::set_universe_heap(CollectedHeap* heap) { | |
| 51 CollectedHeap::Name kind = heap->kind(); | |
| 52 switch (kind) { | |
| 53 case CollectedHeap::GenCollectedHeap : { | |
| 54 add_gen_collected_heap_info(GenCollectedHeap::heap()); | |
| 55 break; | |
| 56 } | |
| 57 #ifndef SERIALGC | |
| 58 case CollectedHeap::ParallelScavengeHeap : { | |
| 59 add_parallel_scavenge_heap_info(ParallelScavengeHeap::heap()); | |
| 60 break; | |
| 61 } | |
| 342 | 62 case CollectedHeap::G1CollectedHeap : { |
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63 add_g1_heap_info(G1CollectedHeap::heap()); |
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64 break; |
| 342 | 65 } |
| 0 | 66 #endif // SERIALGC |
| 67 default: { | |
| 342 | 68 guarantee(false, "Unrecognized kind of heap"); |
| 0 | 69 } |
| 70 } | |
| 71 | |
| 72 // set the GC thread count | |
| 73 GcThreadCountClosure gctcc; | |
| 74 heap->gc_threads_do(&gctcc); | |
| 75 int count = gctcc.count(); | |
| 76 if (count > 0) { | |
| 77 _minor_gc_manager->set_num_gc_threads(count); | |
| 78 _major_gc_manager->set_num_gc_threads(count); | |
| 79 } | |
| 80 | |
| 81 // All memory pools and memory managers are initialized. | |
| 82 // | |
| 83 _minor_gc_manager->initialize_gc_stat_info(); | |
| 84 _major_gc_manager->initialize_gc_stat_info(); | |
| 85 } | |
| 86 | |
| 87 // Add memory pools for GenCollectedHeap | |
| 88 // This function currently only supports two generations collected heap. | |
| 89 // The collector for GenCollectedHeap will have two memory managers. | |
| 90 void MemoryService::add_gen_collected_heap_info(GenCollectedHeap* heap) { | |
| 91 CollectorPolicy* policy = heap->collector_policy(); | |
| 92 | |
| 93 assert(policy->is_two_generation_policy(), "Only support two generations"); | |
| 94 guarantee(heap->n_gens() == 2, "Only support two-generation heap"); | |
| 95 | |
| 96 TwoGenerationCollectorPolicy* two_gen_policy = policy->as_two_generation_policy(); | |
| 97 if (two_gen_policy != NULL) { | |
| 98 GenerationSpec** specs = two_gen_policy->generations(); | |
| 99 Generation::Name kind = specs[0]->name(); | |
| 100 switch (kind) { | |
| 101 case Generation::DefNew: | |
| 102 _minor_gc_manager = MemoryManager::get_copy_memory_manager(); | |
| 103 break; | |
| 104 #ifndef SERIALGC | |
| 105 case Generation::ParNew: | |
| 106 case Generation::ASParNew: | |
| 107 _minor_gc_manager = MemoryManager::get_parnew_memory_manager(); | |
| 108 break; | |
| 109 #endif // SERIALGC | |
| 110 default: | |
| 111 guarantee(false, "Unrecognized generation spec"); | |
| 112 break; | |
| 113 } | |
| 114 if (policy->is_mark_sweep_policy()) { | |
| 115 _major_gc_manager = MemoryManager::get_msc_memory_manager(); | |
| 116 #ifndef SERIALGC | |
| 117 } else if (policy->is_concurrent_mark_sweep_policy()) { | |
| 118 _major_gc_manager = MemoryManager::get_cms_memory_manager(); | |
| 119 #endif // SERIALGC | |
| 120 } else { | |
| 121 guarantee(false, "Unknown two-gen policy"); | |
| 122 } | |
| 123 } else { | |
| 124 guarantee(false, "Non two-gen policy"); | |
| 125 } | |
| 126 _managers_list->append(_minor_gc_manager); | |
| 127 _managers_list->append(_major_gc_manager); | |
| 128 | |
| 129 add_generation_memory_pool(heap->get_gen(minor), _major_gc_manager, _minor_gc_manager); | |
| 130 add_generation_memory_pool(heap->get_gen(major), _major_gc_manager); | |
| 131 | |
| 132 PermGen::Name name = policy->permanent_generation()->name(); | |
| 133 switch (name) { | |
| 134 case PermGen::MarkSweepCompact: { | |
| 135 CompactingPermGenGen* perm_gen = (CompactingPermGenGen*) heap->perm_gen(); | |
| 136 add_compact_perm_gen_memory_pool(perm_gen, _major_gc_manager); | |
| 137 break; | |
| 138 } | |
| 139 #ifndef SERIALGC | |
| 140 case PermGen::ConcurrentMarkSweep: { | |
| 141 CMSPermGenGen* cms_gen = (CMSPermGenGen*) heap->perm_gen(); | |
| 142 add_cms_perm_gen_memory_pool(cms_gen, _major_gc_manager); | |
| 143 break; | |
| 144 } | |
| 145 #endif // SERIALGC | |
| 146 default: | |
| 147 guarantee(false, "Unrecognized perm generation"); | |
| 148 break; | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 #ifndef SERIALGC | |
| 153 // Add memory pools for ParallelScavengeHeap | |
| 154 // This function currently only supports two generations collected heap. | |
| 155 // The collector for ParallelScavengeHeap will have two memory managers. | |
| 156 void MemoryService::add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap) { | |
| 157 // Two managers to keep statistics about _minor_gc_manager and _major_gc_manager GC. | |
| 158 _minor_gc_manager = MemoryManager::get_psScavenge_memory_manager(); | |
| 159 _major_gc_manager = MemoryManager::get_psMarkSweep_memory_manager(); | |
| 160 _managers_list->append(_minor_gc_manager); | |
| 161 _managers_list->append(_major_gc_manager); | |
| 162 | |
| 163 add_psYoung_memory_pool(heap->young_gen(), _major_gc_manager, _minor_gc_manager); | |
| 164 add_psOld_memory_pool(heap->old_gen(), _major_gc_manager); | |
| 165 add_psPerm_memory_pool(heap->perm_gen(), _major_gc_manager); | |
| 166 } | |
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167 |
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168 void MemoryService::add_g1_heap_info(G1CollectedHeap* g1h) { |
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169 assert(UseG1GC, "sanity"); |
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170 |
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171 _minor_gc_manager = MemoryManager::get_g1YoungGen_memory_manager(); |
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172 _major_gc_manager = MemoryManager::get_g1OldGen_memory_manager(); |
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173 _managers_list->append(_minor_gc_manager); |
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174 _managers_list->append(_major_gc_manager); |
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175 |
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176 add_g1YoungGen_memory_pool(g1h, _major_gc_manager, _minor_gc_manager); |
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177 add_g1OldGen_memory_pool(g1h, _major_gc_manager); |
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178 add_g1PermGen_memory_pool(g1h, _major_gc_manager); |
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179 } |
| 0 | 180 #endif // SERIALGC |
| 181 | |
| 182 MemoryPool* MemoryService::add_gen(Generation* gen, | |
| 183 const char* name, | |
| 184 bool is_heap, | |
| 185 bool support_usage_threshold) { | |
| 186 | |
| 187 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap); | |
| 188 GenerationPool* pool = new GenerationPool(gen, name, type, support_usage_threshold); | |
| 189 _pools_list->append(pool); | |
| 190 return (MemoryPool*) pool; | |
| 191 } | |
| 192 | |
| 193 MemoryPool* MemoryService::add_space(ContiguousSpace* space, | |
| 194 const char* name, | |
| 195 bool is_heap, | |
| 196 size_t max_size, | |
| 197 bool support_usage_threshold) { | |
| 198 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap); | |
| 199 ContiguousSpacePool* pool = new ContiguousSpacePool(space, name, type, max_size, support_usage_threshold); | |
| 200 | |
| 201 _pools_list->append(pool); | |
| 202 return (MemoryPool*) pool; | |
| 203 } | |
| 204 | |
| 205 MemoryPool* MemoryService::add_survivor_spaces(DefNewGeneration* gen, | |
| 206 const char* name, | |
| 207 bool is_heap, | |
| 208 size_t max_size, | |
| 209 bool support_usage_threshold) { | |
| 210 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap); | |
| 211 SurvivorContiguousSpacePool* pool = new SurvivorContiguousSpacePool(gen, name, type, max_size, support_usage_threshold); | |
| 212 | |
| 213 _pools_list->append(pool); | |
| 214 return (MemoryPool*) pool; | |
| 215 } | |
| 216 | |
| 217 #ifndef SERIALGC | |
| 218 MemoryPool* MemoryService::add_cms_space(CompactibleFreeListSpace* space, | |
| 219 const char* name, | |
| 220 bool is_heap, | |
| 221 size_t max_size, | |
| 222 bool support_usage_threshold) { | |
| 223 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap); | |
| 224 CompactibleFreeListSpacePool* pool = new CompactibleFreeListSpacePool(space, name, type, max_size, support_usage_threshold); | |
| 225 _pools_list->append(pool); | |
| 226 return (MemoryPool*) pool; | |
| 227 } | |
| 228 #endif // SERIALGC | |
| 229 | |
| 230 // Add memory pool(s) for one generation | |
| 231 void MemoryService::add_generation_memory_pool(Generation* gen, | |
| 232 MemoryManager* major_mgr, | |
| 233 MemoryManager* minor_mgr) { | |
| 234 Generation::Name kind = gen->kind(); | |
| 235 int index = _pools_list->length(); | |
| 236 | |
| 237 switch (kind) { | |
| 238 case Generation::DefNew: { | |
| 239 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers"); | |
| 240 DefNewGeneration* young_gen = (DefNewGeneration*) gen; | |
| 241 // Add a memory pool for each space and young gen doesn't | |
| 242 // support low memory detection as it is expected to get filled up. | |
| 243 MemoryPool* eden = add_space(young_gen->eden(), | |
| 244 "Eden Space", | |
| 245 true, /* is_heap */ | |
| 246 young_gen->max_eden_size(), | |
| 247 false /* support_usage_threshold */); | |
| 248 MemoryPool* survivor = add_survivor_spaces(young_gen, | |
| 249 "Survivor Space", | |
| 250 true, /* is_heap */ | |
| 251 young_gen->max_survivor_size(), | |
| 252 false /* support_usage_threshold */); | |
| 253 break; | |
| 254 } | |
| 255 | |
| 256 #ifndef SERIALGC | |
| 257 case Generation::ParNew: | |
| 258 case Generation::ASParNew: | |
| 259 { | |
| 260 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers"); | |
| 261 // Add a memory pool for each space and young gen doesn't | |
| 262 // support low memory detection as it is expected to get filled up. | |
| 263 ParNewGeneration* parnew_gen = (ParNewGeneration*) gen; | |
| 264 MemoryPool* eden = add_space(parnew_gen->eden(), | |
| 265 "Par Eden Space", | |
| 266 true /* is_heap */, | |
| 267 parnew_gen->max_eden_size(), | |
| 268 false /* support_usage_threshold */); | |
| 269 MemoryPool* survivor = add_survivor_spaces(parnew_gen, | |
| 270 "Par Survivor Space", | |
| 271 true, /* is_heap */ | |
| 272 parnew_gen->max_survivor_size(), | |
| 273 false /* support_usage_threshold */); | |
| 274 | |
| 275 break; | |
| 276 } | |
| 277 #endif // SERIALGC | |
| 278 | |
| 279 case Generation::MarkSweepCompact: { | |
| 280 assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager"); | |
| 281 add_gen(gen, | |
| 282 "Tenured Gen", | |
| 283 true, /* is_heap */ | |
| 284 true /* support_usage_threshold */); | |
| 285 break; | |
| 286 } | |
| 287 | |
| 288 #ifndef SERIALGC | |
| 289 case Generation::ConcurrentMarkSweep: | |
| 290 case Generation::ASConcurrentMarkSweep: | |
| 291 { | |
| 292 assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager"); | |
| 293 ConcurrentMarkSweepGeneration* cms = (ConcurrentMarkSweepGeneration*) gen; | |
| 294 MemoryPool* pool = add_cms_space(cms->cmsSpace(), | |
| 295 "CMS Old Gen", | |
| 296 true, /* is_heap */ | |
| 297 cms->reserved().byte_size(), | |
| 298 true /* support_usage_threshold */); | |
| 299 break; | |
| 300 } | |
| 301 #endif // SERIALGC | |
| 302 | |
| 303 default: | |
| 304 assert(false, "should not reach here"); | |
| 305 // no memory pool added for others | |
| 306 break; | |
| 307 } | |
| 308 | |
| 309 assert(major_mgr != NULL, "Should have at least one manager"); | |
| 310 // Link managers and the memory pools together | |
| 311 for (int i = index; i < _pools_list->length(); i++) { | |
| 312 MemoryPool* pool = _pools_list->at(i); | |
| 313 major_mgr->add_pool(pool); | |
| 314 if (minor_mgr != NULL) { | |
| 315 minor_mgr->add_pool(pool); | |
| 316 } | |
| 317 } | |
| 318 } | |
| 319 | |
| 320 void MemoryService::add_compact_perm_gen_memory_pool(CompactingPermGenGen* perm_gen, | |
| 321 MemoryManager* mgr) { | |
| 322 PermanentGenerationSpec* spec = perm_gen->spec(); | |
| 323 size_t max_size = spec->max_size() - spec->read_only_size() - spec->read_write_size(); | |
| 324 MemoryPool* pool = add_space(perm_gen->unshared_space(), | |
| 325 "Perm Gen", | |
| 326 false, /* is_heap */ | |
| 327 max_size, | |
| 328 true /* support_usage_threshold */); | |
| 329 mgr->add_pool(pool); | |
| 330 if (UseSharedSpaces) { | |
| 331 pool = add_space(perm_gen->ro_space(), | |
| 332 "Perm Gen [shared-ro]", | |
| 333 false, /* is_heap */ | |
| 334 spec->read_only_size(), | |
| 335 true /* support_usage_threshold */); | |
| 336 mgr->add_pool(pool); | |
| 337 | |
| 338 pool = add_space(perm_gen->rw_space(), | |
| 339 "Perm Gen [shared-rw]", | |
| 340 false, /* is_heap */ | |
| 341 spec->read_write_size(), | |
| 342 true /* support_usage_threshold */); | |
| 343 mgr->add_pool(pool); | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 #ifndef SERIALGC | |
| 348 void MemoryService::add_cms_perm_gen_memory_pool(CMSPermGenGen* cms_gen, | |
| 349 MemoryManager* mgr) { | |
| 350 | |
| 351 MemoryPool* pool = add_cms_space(cms_gen->cmsSpace(), | |
| 352 "CMS Perm Gen", | |
| 353 false, /* is_heap */ | |
| 354 cms_gen->reserved().byte_size(), | |
| 355 true /* support_usage_threshold */); | |
| 356 mgr->add_pool(pool); | |
| 357 } | |
| 358 | |
| 359 void MemoryService::add_psYoung_memory_pool(PSYoungGen* gen, MemoryManager* major_mgr, MemoryManager* minor_mgr) { | |
| 360 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers"); | |
| 361 | |
| 362 // Add a memory pool for each space and young gen doesn't | |
| 363 // support low memory detection as it is expected to get filled up. | |
| 364 EdenMutableSpacePool* eden = new EdenMutableSpacePool(gen, | |
| 365 gen->eden_space(), | |
| 366 "PS Eden Space", | |
| 367 MemoryPool::Heap, | |
| 368 false /* support_usage_threshold */); | |
| 369 | |
| 370 SurvivorMutableSpacePool* survivor = new SurvivorMutableSpacePool(gen, | |
| 371 "PS Survivor Space", | |
| 372 MemoryPool::Heap, | |
| 373 false /* support_usage_threshold */); | |
| 374 | |
| 375 major_mgr->add_pool(eden); | |
| 376 major_mgr->add_pool(survivor); | |
| 377 minor_mgr->add_pool(eden); | |
| 378 minor_mgr->add_pool(survivor); | |
| 379 _pools_list->append(eden); | |
| 380 _pools_list->append(survivor); | |
| 381 } | |
| 382 | |
| 383 void MemoryService::add_psOld_memory_pool(PSOldGen* gen, MemoryManager* mgr) { | |
| 384 PSGenerationPool* old_gen = new PSGenerationPool(gen, | |
| 385 "PS Old Gen", | |
| 386 MemoryPool::Heap, | |
| 387 true /* support_usage_threshold */); | |
| 388 mgr->add_pool(old_gen); | |
| 389 _pools_list->append(old_gen); | |
| 390 } | |
| 391 | |
| 392 void MemoryService::add_psPerm_memory_pool(PSPermGen* gen, MemoryManager* mgr) { | |
| 393 PSGenerationPool* perm_gen = new PSGenerationPool(gen, | |
| 394 "PS Perm Gen", | |
| 395 MemoryPool::NonHeap, | |
| 396 true /* support_usage_threshold */); | |
| 397 mgr->add_pool(perm_gen); | |
| 398 _pools_list->append(perm_gen); | |
| 399 } | |
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401 void MemoryService::add_g1YoungGen_memory_pool(G1CollectedHeap* g1h, |
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402 MemoryManager* major_mgr, |
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403 MemoryManager* minor_mgr) { |
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404 assert(major_mgr != NULL && minor_mgr != NULL, "should have two managers"); |
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405 |
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406 G1EdenPool* eden = new G1EdenPool(g1h); |
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407 G1SurvivorPool* survivor = new G1SurvivorPool(g1h); |
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408 |
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409 major_mgr->add_pool(eden); |
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410 major_mgr->add_pool(survivor); |
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411 minor_mgr->add_pool(eden); |
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412 minor_mgr->add_pool(survivor); |
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413 _pools_list->append(eden); |
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414 _pools_list->append(survivor); |
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415 } |
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416 |
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417 void MemoryService::add_g1OldGen_memory_pool(G1CollectedHeap* g1h, |
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418 MemoryManager* mgr) { |
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419 assert(mgr != NULL, "should have one manager"); |
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420 |
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421 G1OldGenPool* old_gen = new G1OldGenPool(g1h); |
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422 mgr->add_pool(old_gen); |
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423 _pools_list->append(old_gen); |
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424 } |
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425 |
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426 void MemoryService::add_g1PermGen_memory_pool(G1CollectedHeap* g1h, |
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427 MemoryManager* mgr) { |
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428 assert(mgr != NULL, "should have one manager"); |
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429 |
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430 CompactingPermGenGen* perm_gen = (CompactingPermGenGen*) g1h->perm_gen(); |
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431 PermanentGenerationSpec* spec = perm_gen->spec(); |
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432 size_t max_size = spec->max_size() - spec->read_only_size() |
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433 - spec->read_write_size(); |
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434 MemoryPool* pool = add_space(perm_gen->unshared_space(), |
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435 "G1 Perm Gen", |
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436 false, /* is_heap */ |
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437 max_size, |
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438 true /* support_usage_threshold */); |
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439 mgr->add_pool(pool); |
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440 |
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441 // in case we support CDS in G1 |
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442 if (UseSharedSpaces) { |
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443 pool = add_space(perm_gen->ro_space(), |
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444 "G1 Perm Gen [shared-ro]", |
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445 false, /* is_heap */ |
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446 spec->read_only_size(), |
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447 true /* support_usage_threshold */); |
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448 mgr->add_pool(pool); |
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449 |
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450 pool = add_space(perm_gen->rw_space(), |
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451 "G1 Perm Gen [shared-rw]", |
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452 false, /* is_heap */ |
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453 spec->read_write_size(), |
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454 true /* support_usage_threshold */); |
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455 mgr->add_pool(pool); |
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456 } |
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457 } |
| 0 | 458 #endif // SERIALGC |
| 459 | |
| 460 void MemoryService::add_code_heap_memory_pool(CodeHeap* heap) { | |
| 461 _code_heap_pool = new CodeHeapPool(heap, | |
| 462 "Code Cache", | |
| 463 true /* support_usage_threshold */); | |
| 464 MemoryManager* mgr = MemoryManager::get_code_cache_memory_manager(); | |
| 465 mgr->add_pool(_code_heap_pool); | |
| 466 | |
| 467 _pools_list->append(_code_heap_pool); | |
| 468 _managers_list->append(mgr); | |
| 469 } | |
| 470 | |
| 471 MemoryManager* MemoryService::get_memory_manager(instanceHandle mh) { | |
| 472 for (int i = 0; i < _managers_list->length(); i++) { | |
| 473 MemoryManager* mgr = _managers_list->at(i); | |
| 474 if (mgr->is_manager(mh)) { | |
| 475 return mgr; | |
| 476 } | |
| 477 } | |
| 478 return NULL; | |
| 479 } | |
| 480 | |
| 481 MemoryPool* MemoryService::get_memory_pool(instanceHandle ph) { | |
| 482 for (int i = 0; i < _pools_list->length(); i++) { | |
| 483 MemoryPool* pool = _pools_list->at(i); | |
| 484 if (pool->is_pool(ph)) { | |
| 485 return pool; | |
| 486 } | |
| 487 } | |
| 488 return NULL; | |
| 489 } | |
| 490 | |
| 491 void MemoryService::track_memory_usage() { | |
| 492 // Track the peak memory usage | |
| 493 for (int i = 0; i < _pools_list->length(); i++) { | |
| 494 MemoryPool* pool = _pools_list->at(i); | |
| 495 pool->record_peak_memory_usage(); | |
| 496 } | |
| 497 | |
| 498 // Detect low memory | |
| 499 LowMemoryDetector::detect_low_memory(); | |
| 500 } | |
| 501 | |
| 502 void MemoryService::track_memory_pool_usage(MemoryPool* pool) { | |
| 503 // Track the peak memory usage | |
| 504 pool->record_peak_memory_usage(); | |
| 505 | |
| 506 // Detect low memory | |
| 507 if (LowMemoryDetector::is_enabled(pool)) { | |
| 508 LowMemoryDetector::detect_low_memory(pool); | |
| 509 } | |
| 510 } | |
| 511 | |
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512 void MemoryService::gc_begin(bool fullGC, bool recordGCBeginTime, |
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513 bool recordAccumulatedGCTime, |
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514 bool recordPreGCUsage, bool recordPeakUsage) { |
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515 |
| 0 | 516 GCMemoryManager* mgr; |
| 517 if (fullGC) { | |
| 518 mgr = _major_gc_manager; | |
| 519 } else { | |
| 520 mgr = _minor_gc_manager; | |
| 521 } | |
| 522 assert(mgr->is_gc_memory_manager(), "Sanity check"); | |
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523 mgr->gc_begin(recordGCBeginTime, recordPreGCUsage, recordAccumulatedGCTime); |
| 0 | 524 |
| 525 // Track the peak memory usage when GC begins | |
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526 if (recordPeakUsage) { |
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527 for (int i = 0; i < _pools_list->length(); i++) { |
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528 MemoryPool* pool = _pools_list->at(i); |
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529 pool->record_peak_memory_usage(); |
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530 } |
| 0 | 531 } |
| 532 } | |
| 533 | |
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534 void MemoryService::gc_end(bool fullGC, bool recordPostGCUsage, |
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535 bool recordAccumulatedGCTime, |
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536 bool recordGCEndTime, bool countCollection) { |
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537 |
| 0 | 538 GCMemoryManager* mgr; |
| 539 if (fullGC) { | |
| 540 mgr = (GCMemoryManager*) _major_gc_manager; | |
| 541 } else { | |
| 542 mgr = (GCMemoryManager*) _minor_gc_manager; | |
| 543 } | |
| 544 assert(mgr->is_gc_memory_manager(), "Sanity check"); | |
| 545 | |
| 546 // register the GC end statistics and memory usage | |
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547 mgr->gc_end(recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime, |
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548 countCollection); |
| 0 | 549 } |
| 550 | |
| 551 void MemoryService::oops_do(OopClosure* f) { | |
| 552 int i; | |
| 553 | |
| 554 for (i = 0; i < _pools_list->length(); i++) { | |
| 555 MemoryPool* pool = _pools_list->at(i); | |
| 556 pool->oops_do(f); | |
| 557 } | |
| 558 for (i = 0; i < _managers_list->length(); i++) { | |
| 559 MemoryManager* mgr = _managers_list->at(i); | |
| 560 mgr->oops_do(f); | |
| 561 } | |
| 562 } | |
| 563 | |
| 564 bool MemoryService::set_verbose(bool verbose) { | |
| 565 MutexLocker m(Management_lock); | |
| 566 // verbose will be set to the previous value | |
| 567 bool succeed = CommandLineFlags::boolAtPut((char*)"PrintGC", &verbose, MANAGEMENT); | |
| 568 assert(succeed, "Setting PrintGC flag fails"); | |
| 569 ClassLoadingService::reset_trace_class_unloading(); | |
| 570 | |
| 571 return verbose; | |
| 572 } | |
| 573 | |
| 574 Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) { | |
| 575 klassOop k = Management::java_lang_management_MemoryUsage_klass(CHECK_NH); | |
| 576 instanceKlassHandle ik(THREAD, k); | |
| 577 | |
| 578 instanceHandle obj = ik->allocate_instance_handle(CHECK_NH); | |
| 579 | |
| 580 JavaValue result(T_VOID); | |
| 581 JavaCallArguments args(10); | |
| 582 args.push_oop(obj); // receiver | |
| 583 args.push_long(usage.init_size_as_jlong()); // Argument 1 | |
| 584 args.push_long(usage.used_as_jlong()); // Argument 2 | |
| 585 args.push_long(usage.committed_as_jlong()); // Argument 3 | |
| 586 args.push_long(usage.max_size_as_jlong()); // Argument 4 | |
| 587 | |
| 588 JavaCalls::call_special(&result, | |
| 589 ik, | |
| 590 vmSymbolHandles::object_initializer_name(), | |
| 591 vmSymbolHandles::long_long_long_long_void_signature(), | |
| 592 &args, | |
| 593 CHECK_NH); | |
| 594 return obj; | |
| 595 } | |
| 596 // | |
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597 // GC manager type depends on the type of Generation. Depending on the space |
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598 // availablity and vm options the gc uses major gc manager or minor gc |
| 0 | 599 // manager or both. The type of gc manager depends on the generation kind. |
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600 // For DefNew, ParNew and ASParNew generation doing scavenge gc uses minor |
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601 // gc manager (so _fullGC is set to false ) and for other generation kinds |
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602 // doing mark-sweep-compact uses major gc manager (so _fullGC is set |
| 0 | 603 // to true). |
| 604 TraceMemoryManagerStats::TraceMemoryManagerStats(Generation::Name kind) { | |
| 605 switch (kind) { | |
| 606 case Generation::DefNew: | |
| 607 #ifndef SERIALGC | |
| 608 case Generation::ParNew: | |
| 609 case Generation::ASParNew: | |
| 610 #endif // SERIALGC | |
| 611 _fullGC=false; | |
| 612 break; | |
| 613 case Generation::MarkSweepCompact: | |
| 614 #ifndef SERIALGC | |
| 615 case Generation::ConcurrentMarkSweep: | |
| 616 case Generation::ASConcurrentMarkSweep: | |
| 617 #endif // SERIALGC | |
| 618 _fullGC=true; | |
| 619 break; | |
| 620 default: | |
| 621 assert(false, "Unrecognized gc generation kind."); | |
| 622 } | |
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623 // this has to be called in a stop the world pause and represent |
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624 // an entire gc pause, start to finish: |
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625 initialize(_fullGC, true, true, true, true, true, true, true); |
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626 } |
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627 TraceMemoryManagerStats::TraceMemoryManagerStats(bool fullGC, |
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628 bool recordGCBeginTime, |
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629 bool recordPreGCUsage, |
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630 bool recordPeakUsage, |
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631 bool recordPostGCUsage, |
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632 bool recordAccumulatedGCTime, |
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633 bool recordGCEndTime, |
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634 bool countCollection) { |
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635 initialize(fullGC, recordGCBeginTime, recordPreGCUsage, recordPeakUsage, |
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636 recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime, |
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637 countCollection); |
| 0 | 638 } |
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639 |
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640 // for a subclass to create then initialize an instance before invoking |
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641 // the MemoryService |
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642 void TraceMemoryManagerStats::initialize(bool fullGC, |
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643 bool recordGCBeginTime, |
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644 bool recordPreGCUsage, |
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645 bool recordPeakUsage, |
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646 bool recordPostGCUsage, |
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647 bool recordAccumulatedGCTime, |
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648 bool recordGCEndTime, |
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649 bool countCollection) { |
| 0 | 650 _fullGC = fullGC; |
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651 _recordGCBeginTime = recordGCBeginTime; |
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652 _recordPreGCUsage = recordPreGCUsage; |
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653 _recordPeakUsage = recordPeakUsage; |
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654 _recordPostGCUsage = recordPostGCUsage; |
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655 _recordAccumulatedGCTime = recordAccumulatedGCTime; |
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656 _recordGCEndTime = recordGCEndTime; |
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657 _countCollection = countCollection; |
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658 |
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659 MemoryService::gc_begin(_fullGC, _recordGCBeginTime, _recordAccumulatedGCTime, |
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660 _recordPreGCUsage, _recordPeakUsage); |
| 0 | 661 } |
| 662 | |
| 663 TraceMemoryManagerStats::~TraceMemoryManagerStats() { | |
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664 MemoryService::gc_end(_fullGC, _recordPostGCUsage, _recordAccumulatedGCTime, |
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665 _recordGCEndTime, _countCollection); |
| 0 | 666 } |
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667 |