Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/services/memoryService.cpp@fb57d4cf76c2
src/share/vm/services/memoryService.cpp
Tue, 11 May 2010 14:35:43 -0700
- author
- prr
- date
- Tue, 11 May 2010 14:35:43 -0700
- changeset 1840
- fb57d4cf76c2
- parent 1524
- db0d5eba9d20
- child 1907
- c18cbe5936b8
- permissions
- -rw-r--r--
6931180: Migration to recent versions of MS Platform SDK
6951582: Build problems on win64
Summary: Changes to enable building JDK7 with Microsoft Visual Studio 2010
Reviewed-by: ohair, art, ccheung, dcubed
1 /*
2 * Copyright 2003-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 # include "incls/_precompiled.incl"
26 # include "incls/_memoryService.cpp.incl"
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);
33 GCMemoryManager* MemoryService::_minor_gc_manager = NULL;
34 GCMemoryManager* MemoryService::_major_gc_manager = NULL;
35 MemoryPool* MemoryService::_code_heap_pool = NULL;
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 };
46 void GcThreadCountClosure::do_thread(Thread* thread) {
47 _count++;
48 }
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 }
62 case CollectedHeap::G1CollectedHeap : {
63 add_g1_heap_info(G1CollectedHeap::heap());
64 break;
65 }
66 #endif // SERIALGC
67 default: {
68 guarantee(false, "Unrecognized kind of heap");
69 }
70 }
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 }
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 }
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();
93 assert(policy->is_two_generation_policy(), "Only support two generations");
94 guarantee(heap->n_gens() == 2, "Only support two-generation heap");
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);
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);
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 }
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);
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 }
168 void MemoryService::add_g1_heap_info(G1CollectedHeap* g1h) {
169 assert(UseG1GC, "sanity");
171 _minor_gc_manager = MemoryManager::get_g1YoungGen_memory_manager();
172 _major_gc_manager = MemoryManager::get_g1OldGen_memory_manager();
173 _managers_list->append(_minor_gc_manager);
174 _managers_list->append(_major_gc_manager);
176 add_g1YoungGen_memory_pool(g1h, _major_gc_manager, _minor_gc_manager);
177 add_g1OldGen_memory_pool(g1h, _major_gc_manager);
178 add_g1PermGen_memory_pool(g1h, _major_gc_manager);
179 }
180 #endif // SERIALGC
182 MemoryPool* MemoryService::add_gen(Generation* gen,
183 const char* name,
184 bool is_heap,
185 bool support_usage_threshold) {
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 }
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);
201 _pools_list->append(pool);
202 return (MemoryPool*) pool;
203 }
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);
213 _pools_list->append(pool);
214 return (MemoryPool*) pool;
215 }
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
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();
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 }
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 */);
275 break;
276 }
277 #endif // SERIALGC
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 }
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
303 default:
304 assert(false, "should not reach here");
305 // no memory pool added for others
306 break;
307 }
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 }
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);
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 }
347 #ifndef SERIALGC
348 void MemoryService::add_cms_perm_gen_memory_pool(CMSPermGenGen* cms_gen,
349 MemoryManager* mgr) {
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 }
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");
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 */);
370 SurvivorMutableSpacePool* survivor = new SurvivorMutableSpacePool(gen,
371 "PS Survivor Space",
372 MemoryPool::Heap,
373 false /* support_usage_threshold */);
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 }
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 }
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 }
401 void MemoryService::add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
402 MemoryManager* major_mgr,
403 MemoryManager* minor_mgr) {
404 assert(major_mgr != NULL && minor_mgr != NULL, "should have two managers");
406 G1EdenPool* eden = new G1EdenPool(g1h);
407 G1SurvivorPool* survivor = new G1SurvivorPool(g1h);
409 major_mgr->add_pool(eden);
410 major_mgr->add_pool(survivor);
411 minor_mgr->add_pool(eden);
412 minor_mgr->add_pool(survivor);
413 _pools_list->append(eden);
414 _pools_list->append(survivor);
415 }
417 void MemoryService::add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
418 MemoryManager* mgr) {
419 assert(mgr != NULL, "should have one manager");
421 G1OldGenPool* old_gen = new G1OldGenPool(g1h);
422 mgr->add_pool(old_gen);
423 _pools_list->append(old_gen);
424 }
426 void MemoryService::add_g1PermGen_memory_pool(G1CollectedHeap* g1h,
427 MemoryManager* mgr) {
428 assert(mgr != NULL, "should have one manager");
430 CompactingPermGenGen* perm_gen = (CompactingPermGenGen*) g1h->perm_gen();
431 PermanentGenerationSpec* spec = perm_gen->spec();
432 size_t max_size = spec->max_size() - spec->read_only_size()
433 - spec->read_write_size();
434 MemoryPool* pool = add_space(perm_gen->unshared_space(),
435 "G1 Perm Gen",
436 false, /* is_heap */
437 max_size,
438 true /* support_usage_threshold */);
439 mgr->add_pool(pool);
441 // in case we support CDS in G1
442 if (UseSharedSpaces) {
443 pool = add_space(perm_gen->ro_space(),
444 "G1 Perm Gen [shared-ro]",
445 false, /* is_heap */
446 spec->read_only_size(),
447 true /* support_usage_threshold */);
448 mgr->add_pool(pool);
450 pool = add_space(perm_gen->rw_space(),
451 "G1 Perm Gen [shared-rw]",
452 false, /* is_heap */
453 spec->read_write_size(),
454 true /* support_usage_threshold */);
455 mgr->add_pool(pool);
456 }
457 }
458 #endif // SERIALGC
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);
467 _pools_list->append(_code_heap_pool);
468 _managers_list->append(mgr);
469 }
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 }
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 }
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 }
498 // Detect low memory
499 LowMemoryDetector::detect_low_memory();
500 }
502 void MemoryService::track_memory_pool_usage(MemoryPool* pool) {
503 // Track the peak memory usage
504 pool->record_peak_memory_usage();
506 // Detect low memory
507 if (LowMemoryDetector::is_enabled(pool)) {
508 LowMemoryDetector::detect_low_memory(pool);
509 }
510 }
512 void MemoryService::gc_begin(bool fullGC) {
513 GCMemoryManager* mgr;
514 if (fullGC) {
515 mgr = _major_gc_manager;
516 } else {
517 mgr = _minor_gc_manager;
518 }
519 assert(mgr->is_gc_memory_manager(), "Sanity check");
520 mgr->gc_begin();
522 // Track the peak memory usage when GC begins
523 for (int i = 0; i < _pools_list->length(); i++) {
524 MemoryPool* pool = _pools_list->at(i);
525 pool->record_peak_memory_usage();
526 }
527 }
529 void MemoryService::gc_end(bool fullGC) {
530 GCMemoryManager* mgr;
531 if (fullGC) {
532 mgr = (GCMemoryManager*) _major_gc_manager;
533 } else {
534 mgr = (GCMemoryManager*) _minor_gc_manager;
535 }
536 assert(mgr->is_gc_memory_manager(), "Sanity check");
538 // register the GC end statistics and memory usage
539 mgr->gc_end();
540 }
542 void MemoryService::oops_do(OopClosure* f) {
543 int i;
545 for (i = 0; i < _pools_list->length(); i++) {
546 MemoryPool* pool = _pools_list->at(i);
547 pool->oops_do(f);
548 }
549 for (i = 0; i < _managers_list->length(); i++) {
550 MemoryManager* mgr = _managers_list->at(i);
551 mgr->oops_do(f);
552 }
553 }
555 bool MemoryService::set_verbose(bool verbose) {
556 MutexLocker m(Management_lock);
557 // verbose will be set to the previous value
558 bool succeed = CommandLineFlags::boolAtPut((char*)"PrintGC", &verbose, MANAGEMENT);
559 assert(succeed, "Setting PrintGC flag fails");
560 ClassLoadingService::reset_trace_class_unloading();
562 return verbose;
563 }
565 Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) {
566 klassOop k = Management::java_lang_management_MemoryUsage_klass(CHECK_NH);
567 instanceKlassHandle ik(THREAD, k);
569 instanceHandle obj = ik->allocate_instance_handle(CHECK_NH);
571 JavaValue result(T_VOID);
572 JavaCallArguments args(10);
573 args.push_oop(obj); // receiver
574 args.push_long(usage.init_size_as_jlong()); // Argument 1
575 args.push_long(usage.used_as_jlong()); // Argument 2
576 args.push_long(usage.committed_as_jlong()); // Argument 3
577 args.push_long(usage.max_size_as_jlong()); // Argument 4
579 JavaCalls::call_special(&result,
580 ik,
581 vmSymbolHandles::object_initializer_name(),
582 vmSymbolHandles::long_long_long_long_void_signature(),
583 &args,
584 CHECK_NH);
585 return obj;
586 }
587 //
588 // GC manager type depends on the type of Generation. Depending the space
589 // availablity and vm option the gc uses major gc manager or minor gc
590 // manager or both. The type of gc manager depends on the generation kind.
591 // For DefNew, ParNew and ASParNew generation doing scavange gc uses minor
592 // gc manager (so _fullGC is set to false ) and for other generation kind
593 // DOing mark-sweep-compact uses major gc manager (so _fullGC is set
594 // to true).
595 TraceMemoryManagerStats::TraceMemoryManagerStats(Generation::Name kind) {
596 switch (kind) {
597 case Generation::DefNew:
598 #ifndef SERIALGC
599 case Generation::ParNew:
600 case Generation::ASParNew:
601 #endif // SERIALGC
602 _fullGC=false;
603 break;
604 case Generation::MarkSweepCompact:
605 #ifndef SERIALGC
606 case Generation::ConcurrentMarkSweep:
607 case Generation::ASConcurrentMarkSweep:
608 #endif // SERIALGC
609 _fullGC=true;
610 break;
611 default:
612 assert(false, "Unrecognized gc generation kind.");
613 }
614 MemoryService::gc_begin(_fullGC);
615 }
616 TraceMemoryManagerStats::TraceMemoryManagerStats(bool fullGC) {
617 _fullGC = fullGC;
618 MemoryService::gc_begin(_fullGC);
619 }
621 TraceMemoryManagerStats::~TraceMemoryManagerStats() {
622 MemoryService::gc_end(_fullGC);
623 }
