1 /* 2 * Copyright (c) 2003, 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 25 #include "precompiled.hpp" 26 #include "classfile/systemDictionary.hpp" 27 #include "classfile/vmSymbols.hpp" 28 #include "gc_implementation/shared/mutableSpace.hpp" 29 #include "memory/collectorPolicy.hpp" 30 #include "memory/defNewGeneration.hpp" 31 #include "memory/genCollectedHeap.hpp" 32 #include "memory/generation.hpp" 33 #include "memory/generationSpec.hpp" 34 #include "memory/heap.hpp" 35 #include "memory/memRegion.hpp" 36 #include "memory/tenuredGeneration.hpp" 37 #include "oops/oop.inline.hpp" 38 #include "runtime/javaCalls.hpp" 39 #include "services/classLoadingService.hpp" 40 #include "services/lowMemoryDetector.hpp" 41 #include "services/management.hpp" 42 #include "services/memoryManager.hpp" 43 #include "services/memoryPool.hpp" 44 #include "services/memoryService.hpp" 45 #include "utilities/growableArray.hpp" 46 #include "utilities/macros.hpp" 47 #if INCLUDE_ALL_GCS 48 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp" 49 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" 50 #include "gc_implementation/parNew/parNewGeneration.hpp" 51 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" 52 #include "gc_implementation/parallelScavenge/psOldGen.hpp" 53 #include "gc_implementation/parallelScavenge/psYoungGen.hpp" 54 #include "services/g1MemoryPool.hpp" 55 #include "services/psMemoryPool.hpp" 56 #endif // INCLUDE_ALL_GCS 57 58 GrowableArray<MemoryPool*>* MemoryService::_pools_list = 59 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<MemoryPool*>(init_pools_list_size, true); 60 GrowableArray<MemoryManager*>* MemoryService::_managers_list = 61 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<MemoryManager*>(init_managers_list_size, true); 62 63 GCMemoryManager* MemoryService::_minor_gc_manager = NULL; 64 GCMemoryManager* MemoryService::_major_gc_manager = NULL; 65 MemoryPool* MemoryService::_code_heap_pool = NULL; 66 67 class GcThreadCountClosure: public ThreadClosure { 68 private: 69 int _count; 70 public: 71 GcThreadCountClosure() : _count(0) {}; 72 void do_thread(Thread* thread); 73 int count() { return _count; } 74 }; 75 76 void GcThreadCountClosure::do_thread(Thread* thread) { 77 _count++; 78 } 79 80 void MemoryService::set_universe_heap(CollectedHeap* heap) { 81 CollectedHeap::Name kind = heap->kind(); 82 switch (kind) { 83 case CollectedHeap::GenCollectedHeap : { 84 add_gen_collected_heap_info(GenCollectedHeap::heap()); 85 break; 86 } 87 #if INCLUDE_ALL_GCS 88 case CollectedHeap::ParallelScavengeHeap : { 89 add_parallel_scavenge_heap_info(ParallelScavengeHeap::heap()); 90 break; 91 } 92 case CollectedHeap::G1CollectedHeap : { 93 add_g1_heap_info(G1CollectedHeap::heap()); 94 break; 95 } 96 #endif // INCLUDE_ALL_GCS 97 default: { 98 guarantee(false, "Unrecognized kind of heap"); 99 } 100 } 101 102 // set the GC thread count 103 GcThreadCountClosure gctcc; 104 heap->gc_threads_do(&gctcc); 105 int count = gctcc.count(); 106 if (count > 0) { 107 _minor_gc_manager->set_num_gc_threads(count); 108 _major_gc_manager->set_num_gc_threads(count); 109 } 110 111 // All memory pools and memory managers are initialized. 112 // 113 _minor_gc_manager->initialize_gc_stat_info(); 114 _major_gc_manager->initialize_gc_stat_info(); 115 } 116 117 // Add memory pools for GenCollectedHeap 118 // This function currently only supports two generations collected heap. 119 // The collector for GenCollectedHeap will have two memory managers. 120 void MemoryService::add_gen_collected_heap_info(GenCollectedHeap* heap) { 121 CollectorPolicy* policy = heap->collector_policy(); 122 123 assert(policy->is_two_generation_policy(), "Only support two generations"); 124 guarantee(heap->n_gens() == 2, "Only support two-generation heap"); 125 126 TwoGenerationCollectorPolicy* two_gen_policy = policy->as_two_generation_policy(); 127 if (two_gen_policy != NULL) { 128 GenerationSpec** specs = two_gen_policy->generations(); 129 Generation::Name kind = specs[0]->name(); 130 switch (kind) { 131 case Generation::DefNew: 132 _minor_gc_manager = MemoryManager::get_copy_memory_manager(); 133 break; 134 #if INCLUDE_ALL_GCS 135 case Generation::ParNew: 136 case Generation::ASParNew: 137 _minor_gc_manager = MemoryManager::get_parnew_memory_manager(); 138 break; 139 #endif // INCLUDE_ALL_GCS 140 default: 141 guarantee(false, "Unrecognized generation spec"); 142 break; 143 } 144 if (policy->is_mark_sweep_policy()) { 145 _major_gc_manager = MemoryManager::get_msc_memory_manager(); 146 #if INCLUDE_ALL_GCS 147 } else if (policy->is_concurrent_mark_sweep_policy()) { 148 _major_gc_manager = MemoryManager::get_cms_memory_manager(); 149 #endif // INCLUDE_ALL_GCS 150 } else { 151 guarantee(false, "Unknown two-gen policy"); 152 } 153 } else { 154 guarantee(false, "Non two-gen policy"); 155 } 156 _managers_list->append(_minor_gc_manager); 157 _managers_list->append(_major_gc_manager); 158 159 add_generation_memory_pool(heap->get_gen(minor), _major_gc_manager, _minor_gc_manager); 160 add_generation_memory_pool(heap->get_gen(major), _major_gc_manager); 161 } 162 163 #if INCLUDE_ALL_GCS 164 // Add memory pools for ParallelScavengeHeap 165 // This function currently only supports two generations collected heap. 166 // The collector for ParallelScavengeHeap will have two memory managers. 167 void MemoryService::add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap) { 168 // Two managers to keep statistics about _minor_gc_manager and _major_gc_manager GC. 169 _minor_gc_manager = MemoryManager::get_psScavenge_memory_manager(); 170 _major_gc_manager = MemoryManager::get_psMarkSweep_memory_manager(); 171 _managers_list->append(_minor_gc_manager); 172 _managers_list->append(_major_gc_manager); 173 174 add_psYoung_memory_pool(heap->young_gen(), _major_gc_manager, _minor_gc_manager); 175 add_psOld_memory_pool(heap->old_gen(), _major_gc_manager); 176 } 177 178 void MemoryService::add_g1_heap_info(G1CollectedHeap* g1h) { 179 assert(UseG1GC, "sanity"); 180 181 _minor_gc_manager = MemoryManager::get_g1YoungGen_memory_manager(); 182 _major_gc_manager = MemoryManager::get_g1OldGen_memory_manager(); 183 _managers_list->append(_minor_gc_manager); 184 _managers_list->append(_major_gc_manager); 185 186 add_g1YoungGen_memory_pool(g1h, _major_gc_manager, _minor_gc_manager); 187 add_g1OldGen_memory_pool(g1h, _major_gc_manager); 188 } 189 #endif // INCLUDE_ALL_GCS 190 191 MemoryPool* MemoryService::add_gen(Generation* gen, 192 const char* name, 193 bool is_heap, 194 bool support_usage_threshold) { 195 196 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap); 197 GenerationPool* pool = new GenerationPool(gen, name, type, support_usage_threshold); 198 _pools_list->append(pool); 199 return (MemoryPool*) pool; 200 } 201 202 MemoryPool* MemoryService::add_space(ContiguousSpace* space, 203 const char* name, 204 bool is_heap, 205 size_t max_size, 206 bool support_usage_threshold) { 207 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap); 208 ContiguousSpacePool* pool = new ContiguousSpacePool(space, name, type, max_size, support_usage_threshold); 209 210 _pools_list->append(pool); 211 return (MemoryPool*) pool; 212 } 213 214 MemoryPool* MemoryService::add_survivor_spaces(DefNewGeneration* gen, 215 const char* name, 216 bool is_heap, 217 size_t max_size, 218 bool support_usage_threshold) { 219 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap); 220 SurvivorContiguousSpacePool* pool = new SurvivorContiguousSpacePool(gen, name, type, max_size, support_usage_threshold); 221 222 _pools_list->append(pool); 223 return (MemoryPool*) pool; 224 } 225 226 #if INCLUDE_ALL_GCS 227 MemoryPool* MemoryService::add_cms_space(CompactibleFreeListSpace* space, 228 const char* name, 229 bool is_heap, 230 size_t max_size, 231 bool support_usage_threshold) { 232 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap); 233 CompactibleFreeListSpacePool* pool = new CompactibleFreeListSpacePool(space, name, type, max_size, support_usage_threshold); 234 _pools_list->append(pool); 235 return (MemoryPool*) pool; 236 } 237 #endif // INCLUDE_ALL_GCS 238 239 // Add memory pool(s) for one generation 240 void MemoryService::add_generation_memory_pool(Generation* gen, 241 MemoryManager* major_mgr, 242 MemoryManager* minor_mgr) { 243 assert(gen != NULL, "No generation for memory pool"); 244 if (gen == NULL) { 245 ShouldNotReachHere(); 246 return; 247 } 248 Generation::Name kind = gen->kind(); 249 int index = _pools_list->length(); 250 251 switch (kind) { 252 case Generation::DefNew: { 253 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers"); 254 DefNewGeneration* young_gen = (DefNewGeneration*) gen; 255 // Add a memory pool for each space and young gen doesn't 256 // support low memory detection as it is expected to get filled up. 257 MemoryPool* eden = add_space(young_gen->eden(), 258 "Eden Space", 259 true, /* is_heap */ 260 young_gen->max_eden_size(), 261 false /* support_usage_threshold */); 262 MemoryPool* survivor = add_survivor_spaces(young_gen, 263 "Survivor Space", 264 true, /* is_heap */ 265 young_gen->max_survivor_size(), 266 false /* support_usage_threshold */); 267 break; 268 } 269 270 #if INCLUDE_ALL_GCS 271 case Generation::ParNew: 272 case Generation::ASParNew: 273 { 274 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers"); 275 // Add a memory pool for each space and young gen doesn't 276 // support low memory detection as it is expected to get filled up. 277 ParNewGeneration* parnew_gen = (ParNewGeneration*) gen; 278 MemoryPool* eden = add_space(parnew_gen->eden(), 279 "Par Eden Space", 280 true /* is_heap */, 281 parnew_gen->max_eden_size(), 282 false /* support_usage_threshold */); 283 MemoryPool* survivor = add_survivor_spaces(parnew_gen, 284 "Par Survivor Space", 285 true, /* is_heap */ 286 parnew_gen->max_survivor_size(), 287 false /* support_usage_threshold */); 288 289 break; 290 } 291 #endif // INCLUDE_ALL_GCS 292 293 case Generation::MarkSweepCompact: { 294 assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager"); 295 add_gen(gen, 296 "Tenured Gen", 297 true, /* is_heap */ 298 true /* support_usage_threshold */); 299 break; 300 } 301 302 #if INCLUDE_ALL_GCS 303 case Generation::ConcurrentMarkSweep: 304 case Generation::ASConcurrentMarkSweep: 305 { 306 assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager"); 307 ConcurrentMarkSweepGeneration* cms = (ConcurrentMarkSweepGeneration*) gen; 308 MemoryPool* pool = add_cms_space(cms->cmsSpace(), 309 "CMS Old Gen", 310 true, /* is_heap */ 311 cms->reserved().byte_size(), 312 true /* support_usage_threshold */); 313 break; 314 } 315 #endif // INCLUDE_ALL_GCS 316 317 default: 318 assert(false, "should not reach here"); 319 // no memory pool added for others 320 break; 321 } 322 323 assert(major_mgr != NULL, "Should have at least one manager"); 324 // Link managers and the memory pools together 325 for (int i = index; i < _pools_list->length(); i++) { 326 MemoryPool* pool = _pools_list->at(i); 327 major_mgr->add_pool(pool); 328 if (minor_mgr != NULL) { 329 minor_mgr->add_pool(pool); 330 } 331 } 332 } 333 334 335 #if INCLUDE_ALL_GCS 336 void MemoryService::add_psYoung_memory_pool(PSYoungGen* gen, MemoryManager* major_mgr, MemoryManager* minor_mgr) { 337 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers"); 338 339 // Add a memory pool for each space and young gen doesn't 340 // support low memory detection as it is expected to get filled up. 341 EdenMutableSpacePool* eden = new EdenMutableSpacePool(gen, 342 gen->eden_space(), 343 "PS Eden Space", 344 MemoryPool::Heap, 345 false /* support_usage_threshold */); 346 347 SurvivorMutableSpacePool* survivor = new SurvivorMutableSpacePool(gen, 348 "PS Survivor Space", 349 MemoryPool::Heap, 350 false /* support_usage_threshold */); 351 352 major_mgr->add_pool(eden); 353 major_mgr->add_pool(survivor); 354 minor_mgr->add_pool(eden); 355 minor_mgr->add_pool(survivor); 356 _pools_list->append(eden); 357 _pools_list->append(survivor); 358 } 359 360 void MemoryService::add_psOld_memory_pool(PSOldGen* gen, MemoryManager* mgr) { 361 PSGenerationPool* old_gen = new PSGenerationPool(gen, 362 "PS Old Gen", 363 MemoryPool::Heap, 364 true /* support_usage_threshold */); 365 mgr->add_pool(old_gen); 366 _pools_list->append(old_gen); 367 } 368 369 void MemoryService::add_g1YoungGen_memory_pool(G1CollectedHeap* g1h, 370 MemoryManager* major_mgr, 371 MemoryManager* minor_mgr) { 372 assert(major_mgr != NULL && minor_mgr != NULL, "should have two managers"); 373 374 G1EdenPool* eden = new G1EdenPool(g1h); 375 G1SurvivorPool* survivor = new G1SurvivorPool(g1h); 376 377 major_mgr->add_pool(eden); 378 major_mgr->add_pool(survivor); 379 minor_mgr->add_pool(eden); 380 minor_mgr->add_pool(survivor); 381 _pools_list->append(eden); 382 _pools_list->append(survivor); 383 } 384 385 void MemoryService::add_g1OldGen_memory_pool(G1CollectedHeap* g1h, 386 MemoryManager* mgr) { 387 assert(mgr != NULL, "should have one manager"); 388 389 G1OldGenPool* old_gen = new G1OldGenPool(g1h); 390 mgr->add_pool(old_gen); 391 _pools_list->append(old_gen); 392 } 393 #endif // INCLUDE_ALL_GCS 394 395 void MemoryService::add_code_heap_memory_pool(CodeHeap* heap) { 396 _code_heap_pool = new CodeHeapPool(heap, 397 "Code Cache", 398 true /* support_usage_threshold */); 399 MemoryManager* mgr = MemoryManager::get_code_cache_memory_manager(); 400 mgr->add_pool(_code_heap_pool); 401 402 _pools_list->append(_code_heap_pool); 403 _managers_list->append(mgr); 404 } 405 406 MemoryManager* MemoryService::get_memory_manager(instanceHandle mh) { 407 for (int i = 0; i < _managers_list->length(); i++) { 408 MemoryManager* mgr = _managers_list->at(i); 409 if (mgr->is_manager(mh)) { 410 return mgr; 411 } 412 } 413 return NULL; 414 } 415 416 MemoryPool* MemoryService::get_memory_pool(instanceHandle ph) { 417 for (int i = 0; i < _pools_list->length(); i++) { 418 MemoryPool* pool = _pools_list->at(i); 419 if (pool->is_pool(ph)) { 420 return pool; 421 } 422 } 423 return NULL; 424 } 425 426 void MemoryService::track_memory_usage() { 427 // Track the peak memory usage 428 for (int i = 0; i < _pools_list->length(); i++) { 429 MemoryPool* pool = _pools_list->at(i); 430 pool->record_peak_memory_usage(); 431 } 432 433 // Detect low memory 434 LowMemoryDetector::detect_low_memory(); 435 } 436 437 void MemoryService::track_memory_pool_usage(MemoryPool* pool) { 438 // Track the peak memory usage 439 pool->record_peak_memory_usage(); 440 441 // Detect low memory 442 if (LowMemoryDetector::is_enabled(pool)) { 443 LowMemoryDetector::detect_low_memory(pool); 444 } 445 } 446 447 void MemoryService::gc_begin(bool fullGC, bool recordGCBeginTime, 448 bool recordAccumulatedGCTime, 449 bool recordPreGCUsage, bool recordPeakUsage) { 450 451 GCMemoryManager* mgr; 452 if (fullGC) { 453 mgr = _major_gc_manager; 454 } else { 455 mgr = _minor_gc_manager; 456 } 457 assert(mgr->is_gc_memory_manager(), "Sanity check"); 458 mgr->gc_begin(recordGCBeginTime, recordPreGCUsage, recordAccumulatedGCTime); 459 460 // Track the peak memory usage when GC begins 461 if (recordPeakUsage) { 462 for (int i = 0; i < _pools_list->length(); i++) { 463 MemoryPool* pool = _pools_list->at(i); 464 pool->record_peak_memory_usage(); 465 } 466 } 467 } 468 469 void MemoryService::gc_end(bool fullGC, bool recordPostGCUsage, 470 bool recordAccumulatedGCTime, 471 bool recordGCEndTime, bool countCollection, 472 GCCause::Cause cause) { 473 474 GCMemoryManager* mgr; 475 if (fullGC) { 476 mgr = (GCMemoryManager*) _major_gc_manager; 477 } else { 478 mgr = (GCMemoryManager*) _minor_gc_manager; 479 } 480 assert(mgr->is_gc_memory_manager(), "Sanity check"); 481 482 // register the GC end statistics and memory usage 483 mgr->gc_end(recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime, 484 countCollection, cause); 485 } 486 487 void MemoryService::oops_do(OopClosure* f) { 488 int i; 489 490 for (i = 0; i < _pools_list->length(); i++) { 491 MemoryPool* pool = _pools_list->at(i); 492 pool->oops_do(f); 493 } 494 for (i = 0; i < _managers_list->length(); i++) { 495 MemoryManager* mgr = _managers_list->at(i); 496 mgr->oops_do(f); 497 } 498 } 499 500 bool MemoryService::set_verbose(bool verbose) { 501 MutexLocker m(Management_lock); 502 // verbose will be set to the previous value 503 bool succeed = CommandLineFlags::boolAtPut((char*)"PrintGC", &verbose, MANAGEMENT); 504 assert(succeed, "Setting PrintGC flag fails"); 505 ClassLoadingService::reset_trace_class_unloading(); 506 507 return verbose; 508 } 509 510 Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) { 511 Klass* k = Management::java_lang_management_MemoryUsage_klass(CHECK_NH); 512 instanceKlassHandle ik(THREAD, k); 513 514 instanceHandle obj = ik->allocate_instance_handle(CHECK_NH); 515 516 JavaValue result(T_VOID); 517 JavaCallArguments args(10); 518 args.push_oop(obj); // receiver 519 args.push_long(usage.init_size_as_jlong()); // Argument 1 520 args.push_long(usage.used_as_jlong()); // Argument 2 521 args.push_long(usage.committed_as_jlong()); // Argument 3 522 args.push_long(usage.max_size_as_jlong()); // Argument 4 523 524 JavaCalls::call_special(&result, 525 ik, 526 vmSymbols::object_initializer_name(), 527 vmSymbols::long_long_long_long_void_signature(), 528 &args, 529 CHECK_NH); 530 return obj; 531 } 532 // 533 // GC manager type depends on the type of Generation. Depending on the space 534 // availablity and vm options the gc uses major gc manager or minor gc 535 // manager or both. The type of gc manager depends on the generation kind. 536 // For DefNew, ParNew and ASParNew generation doing scavenge gc uses minor 537 // gc manager (so _fullGC is set to false ) and for other generation kinds 538 // doing mark-sweep-compact uses major gc manager (so _fullGC is set 539 // to true). 540 TraceMemoryManagerStats::TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause) { 541 switch (kind) { 542 case Generation::DefNew: 543 #if INCLUDE_ALL_GCS 544 case Generation::ParNew: 545 case Generation::ASParNew: 546 #endif // INCLUDE_ALL_GCS 547 _fullGC=false; 548 break; 549 case Generation::MarkSweepCompact: 550 #if INCLUDE_ALL_GCS 551 case Generation::ConcurrentMarkSweep: 552 case Generation::ASConcurrentMarkSweep: 553 #endif // INCLUDE_ALL_GCS 554 _fullGC=true; 555 break; 556 default: 557 assert(false, "Unrecognized gc generation kind."); 558 } 559 // this has to be called in a stop the world pause and represent 560 // an entire gc pause, start to finish: 561 initialize(_fullGC, cause,true, true, true, true, true, true, true); 562 } 563 TraceMemoryManagerStats::TraceMemoryManagerStats(bool fullGC, 564 GCCause::Cause cause, 565 bool recordGCBeginTime, 566 bool recordPreGCUsage, 567 bool recordPeakUsage, 568 bool recordPostGCUsage, 569 bool recordAccumulatedGCTime, 570 bool recordGCEndTime, 571 bool countCollection) { 572 initialize(fullGC, cause, recordGCBeginTime, recordPreGCUsage, recordPeakUsage, 573 recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime, 574 countCollection); 575 } 576 577 // for a subclass to create then initialize an instance before invoking 578 // the MemoryService 579 void TraceMemoryManagerStats::initialize(bool fullGC, 580 GCCause::Cause cause, 581 bool recordGCBeginTime, 582 bool recordPreGCUsage, 583 bool recordPeakUsage, 584 bool recordPostGCUsage, 585 bool recordAccumulatedGCTime, 586 bool recordGCEndTime, 587 bool countCollection) { 588 _fullGC = fullGC; 589 _recordGCBeginTime = recordGCBeginTime; 590 _recordPreGCUsage = recordPreGCUsage; 591 _recordPeakUsage = recordPeakUsage; 592 _recordPostGCUsage = recordPostGCUsage; 593 _recordAccumulatedGCTime = recordAccumulatedGCTime; 594 _recordGCEndTime = recordGCEndTime; 595 _countCollection = countCollection; 596 _cause = cause; 597 598 MemoryService::gc_begin(_fullGC, _recordGCBeginTime, _recordAccumulatedGCTime, 599 _recordPreGCUsage, _recordPeakUsage); 600 } 601 602 TraceMemoryManagerStats::~TraceMemoryManagerStats() { 603 MemoryService::gc_end(_fullGC, _recordPostGCUsage, _recordAccumulatedGCTime, 604 _recordGCEndTime, _countCollection, _cause); 605 } 606