1 /*
2 * Copyright (c) 2003, 2017, 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/parallel/mutableSpace.hpp"
29 #include "gc/serial/defNewGeneration.hpp"
30 #include "gc/serial/tenuredGeneration.hpp"
31 #include "gc/shared/collectorPolicy.hpp"
32 #include "gc/shared/genCollectedHeap.hpp"
33 #include "gc/shared/generation.hpp"
34 #include "gc/shared/generationSpec.hpp"
35 #include "logging/logConfiguration.hpp"
36 #include "memory/heap.hpp"
37 #include "memory/memRegion.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "runtime/globals.hpp"
40 #include "runtime/javaCalls.hpp"
41 #include "services/classLoadingService.hpp"
42 #include "services/lowMemoryDetector.hpp"
43 #include "services/management.hpp"
44 #include "services/memoryManager.hpp"
45 #include "services/memoryPool.hpp"
46 #include "services/memoryService.hpp"
47 #include "utilities/growableArray.hpp"
48 #include "utilities/macros.hpp"
49 #if INCLUDE_ALL_GCS
50 #include "gc/shenandoah/shenandoahHeap.hpp"
51 #include "gc/cms/concurrentMarkSweepGeneration.hpp"
52 #include "gc/cms/parNewGeneration.hpp"
53 #include "gc/g1/g1CollectedHeap.inline.hpp"
54 #include "gc/parallel/parallelScavengeHeap.hpp"
55 #include "gc/parallel/psOldGen.hpp"
56 #include "gc/parallel/psYoungGen.hpp"
57 #include "services/g1MemoryPool.hpp"
58 #include "services/psMemoryPool.hpp"
59 #include "services/shenandoahMemoryPool.hpp"
60 #endif // INCLUDE_ALL_GCS
61
62 GrowableArray<MemoryPool*>* MemoryService::_pools_list =
63 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<MemoryPool*>(init_pools_list_size, true);
64 GrowableArray<MemoryManager*>* MemoryService::_managers_list =
65 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<MemoryManager*>(init_managers_list_size, true);
66
67 GCMemoryManager* MemoryService::_minor_gc_manager = NULL;
68 GCMemoryManager* MemoryService::_major_gc_manager = NULL;
69 MemoryManager* MemoryService::_code_cache_manager = NULL;
70 GrowableArray<MemoryPool*>* MemoryService::_code_heap_pools =
71 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<MemoryPool*>(init_code_heap_pools_size, true);
72 MemoryPool* MemoryService::_metaspace_pool = NULL;
73 MemoryPool* MemoryService::_compressed_class_pool = NULL;
74
75 class GcThreadCountClosure: public ThreadClosure {
76 private:
77 int _count;
78 public:
79 GcThreadCountClosure() : _count(0) {};
80 void do_thread(Thread* thread);
81 int count() { return _count; }
82 };
83
84 void GcThreadCountClosure::do_thread(Thread* thread) {
85 _count++;
86 }
87
88 void MemoryService::set_universe_heap(CollectedHeap* heap) {
89 CollectedHeap::Name kind = heap->kind();
90 switch (kind) {
91 case CollectedHeap::GenCollectedHeap : {
92 add_gen_collected_heap_info(GenCollectedHeap::heap());
93 break;
94 }
95 #if INCLUDE_ALL_GCS
96 case CollectedHeap::ParallelScavengeHeap : {
97 add_parallel_scavenge_heap_info(ParallelScavengeHeap::heap());
98 break;
99 }
100 case CollectedHeap::G1CollectedHeap : {
101 add_g1_heap_info(G1CollectedHeap::heap());
102 break;
103 }
104 case CollectedHeap::ShenandoahHeap : {
105 add_shenandoah_heap_info(ShenandoahHeap::heap());
106 break;
107 }
108 #endif // INCLUDE_ALL_GCS
109 default: {
110 guarantee(false, "Unrecognized kind of heap");
111 }
112 }
113
114 // set the GC thread count
115 GcThreadCountClosure gctcc;
116 heap->gc_threads_do(&gctcc);
117 int count = gctcc.count();
118 if (count > 0) {
119 _minor_gc_manager->set_num_gc_threads(count);
120 _major_gc_manager->set_num_gc_threads(count);
121 }
122
123 // All memory pools and memory managers are initialized.
124 //
125 _minor_gc_manager->initialize_gc_stat_info();
126 _major_gc_manager->initialize_gc_stat_info();
127 }
128
129 // Add memory pools for GenCollectedHeap
130 // This function currently only supports two generations collected heap.
131 // The collector for GenCollectedHeap will have two memory managers.
132 void MemoryService::add_gen_collected_heap_info(GenCollectedHeap* heap) {
133 CollectorPolicy* policy = heap->collector_policy();
134
135 assert(policy->is_generation_policy(), "Only support two generations");
136 GenCollectorPolicy* gen_policy = policy->as_generation_policy();
137 if (gen_policy != NULL) {
138 Generation::Name kind = gen_policy->young_gen_spec()->name();
139 switch (kind) {
140 case Generation::DefNew:
141 _minor_gc_manager = MemoryManager::get_copy_memory_manager();
142 break;
143 #if INCLUDE_ALL_GCS
144 case Generation::ParNew:
145 _minor_gc_manager = MemoryManager::get_parnew_memory_manager();
146 break;
147 #endif // INCLUDE_ALL_GCS
148 default:
149 guarantee(false, "Unrecognized generation spec");
150 break;
151 }
152 if (policy->is_mark_sweep_policy()) {
153 _major_gc_manager = MemoryManager::get_msc_memory_manager();
154 #if INCLUDE_ALL_GCS
155 } else if (policy->is_concurrent_mark_sweep_policy()) {
156 _major_gc_manager = MemoryManager::get_cms_memory_manager();
157 #endif // INCLUDE_ALL_GCS
158 } else {
159 guarantee(false, "Unknown two-gen policy");
160 }
161 } else {
162 guarantee(false, "Non two-gen policy");
163 }
164 _managers_list->append(_minor_gc_manager);
165 _managers_list->append(_major_gc_manager);
166
167 add_generation_memory_pool(heap->young_gen(), _major_gc_manager, _minor_gc_manager);
168 add_generation_memory_pool(heap->old_gen(), _major_gc_manager);
169 }
170
171 #if INCLUDE_ALL_GCS
172 // Add memory pools for ParallelScavengeHeap
173 // This function currently only supports two generations collected heap.
174 // The collector for ParallelScavengeHeap will have two memory managers.
175 void MemoryService::add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap) {
176 // Two managers to keep statistics about _minor_gc_manager and _major_gc_manager GC.
177 _minor_gc_manager = MemoryManager::get_psScavenge_memory_manager();
178 _major_gc_manager = MemoryManager::get_psMarkSweep_memory_manager();
179 _managers_list->append(_minor_gc_manager);
180 _managers_list->append(_major_gc_manager);
181
182 add_psYoung_memory_pool(heap->young_gen(), _major_gc_manager, _minor_gc_manager);
183 add_psOld_memory_pool(heap->old_gen(), _major_gc_manager);
184 }
185
186 void MemoryService::add_g1_heap_info(G1CollectedHeap* g1h) {
187 assert(UseG1GC, "sanity");
188
189 _minor_gc_manager = MemoryManager::get_g1YoungGen_memory_manager();
190 _major_gc_manager = MemoryManager::get_g1OldGen_memory_manager();
191 _managers_list->append(_minor_gc_manager);
192 _managers_list->append(_major_gc_manager);
193
194 add_g1YoungGen_memory_pool(g1h, _major_gc_manager, _minor_gc_manager);
195 add_g1OldGen_memory_pool(g1h, _major_gc_manager);
196 }
197
198 void MemoryService::add_shenandoah_heap_info(ShenandoahHeap* pgch) {
199 assert(UseShenandoahGC, "sanity");
200
201 // Need to have different names for these managers, because having the same name
202 // would confuse notification mechanics: it will enable notifications only for
203 // the first manager with the matching name.
204 _major_gc_manager = MemoryManager::get_shenandoah_major_memory_manager();
205 _minor_gc_manager = MemoryManager::get_shenandoah_minor_memory_manager();
206 _managers_list->append(_major_gc_manager);
207 _managers_list->append(_minor_gc_manager);
208 add_shenandoah_memory_pool(pgch, _minor_gc_manager, true);
209 add_shenandoah_memory_pool(pgch, _minor_gc_manager, false);
210 }
211
212 #endif // INCLUDE_ALL_GCS
213
214 MemoryPool* MemoryService::add_gen(Generation* gen,
215 const char* name,
216 bool is_heap,
217 bool support_usage_threshold) {
218
219 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
220 GenerationPool* pool = new GenerationPool(gen, name, type, support_usage_threshold);
221 _pools_list->append(pool);
222 return (MemoryPool*) pool;
223 }
224
225 MemoryPool* MemoryService::add_space(ContiguousSpace* space,
226 const char* name,
227 bool is_heap,
228 size_t max_size,
229 bool support_usage_threshold) {
230 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
231 ContiguousSpacePool* pool = new ContiguousSpacePool(space, name, type, max_size, support_usage_threshold);
232
233 _pools_list->append(pool);
234 return (MemoryPool*) pool;
235 }
236
237 MemoryPool* MemoryService::add_survivor_spaces(DefNewGeneration* young_gen,
238 const char* name,
239 bool is_heap,
240 size_t max_size,
241 bool support_usage_threshold) {
242 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
243 SurvivorContiguousSpacePool* pool = new SurvivorContiguousSpacePool(young_gen, name, type, max_size, support_usage_threshold);
244
245 _pools_list->append(pool);
246 return (MemoryPool*) pool;
247 }
248
249 #if INCLUDE_ALL_GCS
250 MemoryPool* MemoryService::add_cms_space(CompactibleFreeListSpace* space,
251 const char* name,
252 bool is_heap,
253 size_t max_size,
254 bool support_usage_threshold) {
255 MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
256 CompactibleFreeListSpacePool* pool = new CompactibleFreeListSpacePool(space, name, type, max_size, support_usage_threshold);
257 _pools_list->append(pool);
258 return (MemoryPool*) pool;
259 }
260 #endif // INCLUDE_ALL_GCS
261
262 // Add memory pool(s) for one generation
263 void MemoryService::add_generation_memory_pool(Generation* gen,
264 MemoryManager* major_mgr,
265 MemoryManager* minor_mgr) {
266 guarantee(gen != NULL, "No generation for memory pool");
267 Generation::Name kind = gen->kind();
268 int index = _pools_list->length();
269
270 switch (kind) {
271 case Generation::DefNew: {
272 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
273 DefNewGeneration* young_gen = (DefNewGeneration*) gen;
274 // Add a memory pool for each space and young gen doesn't
275 // support low memory detection as it is expected to get filled up.
276 MemoryPool* eden = add_space(young_gen->eden(),
277 "Eden Space",
278 true, /* is_heap */
279 young_gen->max_eden_size(),
280 false /* support_usage_threshold */);
281 MemoryPool* survivor = add_survivor_spaces(young_gen,
282 "Survivor Space",
283 true, /* is_heap */
284 young_gen->max_survivor_size(),
285 false /* support_usage_threshold */);
286 break;
287 }
288
289 #if INCLUDE_ALL_GCS
290 case Generation::ParNew:
291 {
292 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
293 // Add a memory pool for each space and young gen doesn't
294 // support low memory detection as it is expected to get filled up.
295 ParNewGeneration* parnew_gen = (ParNewGeneration*) gen;
296 MemoryPool* eden = add_space(parnew_gen->eden(),
297 "Par Eden Space",
298 true /* is_heap */,
299 parnew_gen->max_eden_size(),
300 false /* support_usage_threshold */);
301 MemoryPool* survivor = add_survivor_spaces(parnew_gen,
302 "Par Survivor Space",
303 true, /* is_heap */
304 parnew_gen->max_survivor_size(),
305 false /* support_usage_threshold */);
306
307 break;
308 }
309 #endif // INCLUDE_ALL_GCS
310
311 case Generation::MarkSweepCompact: {
312 assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
313 add_gen(gen,
314 "Tenured Gen",
315 true, /* is_heap */
316 true /* support_usage_threshold */);
317 break;
318 }
319
320 #if INCLUDE_ALL_GCS
321 case Generation::ConcurrentMarkSweep:
322 {
323 assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
324 ConcurrentMarkSweepGeneration* cms = (ConcurrentMarkSweepGeneration*) gen;
325 MemoryPool* pool = add_cms_space(cms->cmsSpace(),
326 "CMS Old Gen",
327 true, /* is_heap */
328 cms->reserved().byte_size(),
329 true /* support_usage_threshold */);
330 break;
331 }
332 #endif // INCLUDE_ALL_GCS
333
334 default:
335 assert(false, "should not reach here");
336 // no memory pool added for others
337 break;
338 }
339
340 assert(major_mgr != NULL, "Should have at least one manager");
341 // Link managers and the memory pools together
342 for (int i = index; i < _pools_list->length(); i++) {
343 MemoryPool* pool = _pools_list->at(i);
344 major_mgr->add_pool(pool);
345 if (minor_mgr != NULL) {
346 minor_mgr->add_pool(pool);
347 }
348 }
349 }
350
351
352 #if INCLUDE_ALL_GCS
353 void MemoryService::add_psYoung_memory_pool(PSYoungGen* young_gen, MemoryManager* major_mgr, MemoryManager* minor_mgr) {
354 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
355
356 // Add a memory pool for each space and young gen doesn't
357 // support low memory detection as it is expected to get filled up.
358 EdenMutableSpacePool* eden = new EdenMutableSpacePool(young_gen,
359 young_gen->eden_space(),
360 "PS Eden Space",
361 MemoryPool::Heap,
362 false /* support_usage_threshold */);
363
364 SurvivorMutableSpacePool* survivor = new SurvivorMutableSpacePool(young_gen,
365 "PS Survivor Space",
366 MemoryPool::Heap,
367 false /* support_usage_threshold */);
368
369 major_mgr->add_pool(eden);
370 major_mgr->add_pool(survivor);
371 minor_mgr->add_pool(eden);
372 minor_mgr->add_pool(survivor);
373 _pools_list->append(eden);
374 _pools_list->append(survivor);
375 }
376
377 void MemoryService::add_psOld_memory_pool(PSOldGen* old_gen, MemoryManager* mgr) {
378 PSGenerationPool* old_gen_pool = new PSGenerationPool(old_gen,
379 "PS Old Gen",
380 MemoryPool::Heap,
381 true /* support_usage_threshold */);
382 mgr->add_pool(old_gen_pool);
383 _pools_list->append(old_gen_pool);
384 }
385
386 void MemoryService::add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
387 MemoryManager* major_mgr,
388 MemoryManager* minor_mgr) {
389 assert(major_mgr != NULL && minor_mgr != NULL, "should have two managers");
390
391 G1EdenPool* eden = new G1EdenPool(g1h);
392 G1SurvivorPool* survivor = new G1SurvivorPool(g1h);
393
394 major_mgr->add_pool(eden);
395 major_mgr->add_pool(survivor);
396 minor_mgr->add_pool(eden);
397 minor_mgr->add_pool(survivor);
398 _pools_list->append(eden);
399 _pools_list->append(survivor);
400 }
401
402 void MemoryService::add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
403 MemoryManager* mgr) {
404 assert(mgr != NULL, "should have one manager");
405
406 G1OldGenPool* old_gen = new G1OldGenPool(g1h);
407 mgr->add_pool(old_gen);
408 _pools_list->append(old_gen);
409 }
410
411 void MemoryService::add_shenandoah_memory_pool(ShenandoahHeap* pgc,
412 MemoryManager* mgr, bool global) {
413 ShenandoahMemoryPool* pool = new ShenandoahMemoryPool(pgc,
414 "Shenandoah",
415 MemoryPool::Heap,
416 false /* support_usage_threshold */);
417
418 mgr->add_pool(pool);
419 if (global) {
420 _pools_list->append(pool);
421 }
422 }
423
424
425 #endif // INCLUDE_ALL_GCS
426
427 void MemoryService::add_code_heap_memory_pool(CodeHeap* heap, const char* name) {
428 // Create new memory pool for this heap
429 MemoryPool* code_heap_pool = new CodeHeapPool(heap, name, true /* support_usage_threshold */);
430
431 // Append to lists
432 _code_heap_pools->append(code_heap_pool);
433 _pools_list->append(code_heap_pool);
434
435 if (_code_cache_manager == NULL) {
436 // Create CodeCache memory manager
437 _code_cache_manager = MemoryManager::get_code_cache_memory_manager();
438 _managers_list->append(_code_cache_manager);
439 }
440
441 _code_cache_manager->add_pool(code_heap_pool);
442 }
443
444 void MemoryService::add_metaspace_memory_pools() {
445 MemoryManager* mgr = MemoryManager::get_metaspace_memory_manager();
446
447 _metaspace_pool = new MetaspacePool();
448 mgr->add_pool(_metaspace_pool);
449 _pools_list->append(_metaspace_pool);
450
451 if (UseCompressedClassPointers) {
452 _compressed_class_pool = new CompressedKlassSpacePool();
453 mgr->add_pool(_compressed_class_pool);
454 _pools_list->append(_compressed_class_pool);
455 }
456
457 _managers_list->append(mgr);
458 }
459
460 MemoryManager* MemoryService::get_memory_manager(instanceHandle mh) {
461 for (int i = 0; i < _managers_list->length(); i++) {
462 MemoryManager* mgr = _managers_list->at(i);
463 if (mgr->is_manager(mh)) {
464 return mgr;
465 }
466 }
467 return NULL;
468 }
469
470 MemoryPool* MemoryService::get_memory_pool(instanceHandle ph) {
471 for (int i = 0; i < _pools_list->length(); i++) {
472 MemoryPool* pool = _pools_list->at(i);
473 if (pool->is_pool(ph)) {
474 return pool;
475 }
476 }
477 return NULL;
478 }
479
480 void MemoryService::track_memory_usage() {
481 // Track the peak memory usage
482 for (int i = 0; i < _pools_list->length(); i++) {
483 MemoryPool* pool = _pools_list->at(i);
484 pool->record_peak_memory_usage();
485 }
486
487 // Detect low memory
488 LowMemoryDetector::detect_low_memory();
489 }
490
491 void MemoryService::track_memory_pool_usage(MemoryPool* pool) {
492 // Track the peak memory usage
493 pool->record_peak_memory_usage();
494
495 // Detect low memory
496 if (LowMemoryDetector::is_enabled(pool)) {
497 LowMemoryDetector::detect_low_memory(pool);
498 }
499 }
500
501 void MemoryService::gc_begin(bool fullGC, bool recordGCBeginTime,
502 bool recordAccumulatedGCTime,
503 bool recordPreGCUsage, bool recordPeakUsage) {
504
505 GCMemoryManager* mgr;
506 if (fullGC) {
507 mgr = _major_gc_manager;
508 } else {
509 mgr = _minor_gc_manager;
510 }
511 assert(mgr->is_gc_memory_manager(), "Sanity check");
512 mgr->gc_begin(recordGCBeginTime, recordPreGCUsage, recordAccumulatedGCTime);
513
514 // Track the peak memory usage when GC begins
515 if (recordPeakUsage) {
516 for (int i = 0; i < _pools_list->length(); i++) {
517 MemoryPool* pool = _pools_list->at(i);
518 pool->record_peak_memory_usage();
519 }
520 }
521 }
522
523 void MemoryService::gc_end(bool fullGC, bool recordPostGCUsage,
524 bool recordAccumulatedGCTime,
525 bool recordGCEndTime, bool countCollection,
526 GCCause::Cause cause) {
527
528 GCMemoryManager* mgr;
529 if (fullGC) {
530 mgr = (GCMemoryManager*) _major_gc_manager;
531 } else {
532 mgr = (GCMemoryManager*) _minor_gc_manager;
533 }
534 assert(mgr->is_gc_memory_manager(), "Sanity check");
535
536 // register the GC end statistics and memory usage
537 mgr->gc_end(recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime,
538 countCollection, cause);
539 }
540
541 void MemoryService::oops_do(OopClosure* f) {
542 int i;
543
544 for (i = 0; i < _pools_list->length(); i++) {
545 MemoryPool* pool = _pools_list->at(i);
546 pool->oops_do(f);
547 }
548 for (i = 0; i < _managers_list->length(); i++) {
549 MemoryManager* mgr = _managers_list->at(i);
550 mgr->oops_do(f);
551 }
552 }
553
554 bool MemoryService::set_verbose(bool verbose) {
555 MutexLocker m(Management_lock);
556 // verbose will be set to the previous value
557 if (verbose) {
558 LogConfiguration::configure_stdout(LogLevel::Info, true, LOG_TAGS(gc));
559 } else {
560 LogConfiguration::configure_stdout(LogLevel::Off, true, LOG_TAGS(gc));
561 }
562 ClassLoadingService::reset_trace_class_unloading();
563
564 return verbose;
565 }
566
567 Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) {
568 InstanceKlass* ik = Management::java_lang_management_MemoryUsage_klass(CHECK_NH);
569
570 instanceHandle obj = ik->allocate_instance_handle(CHECK_NH);
571
572 JavaValue result(T_VOID);
573 JavaCallArguments args(10);
574 args.push_oop(obj); // receiver
575 args.push_long(usage.init_size_as_jlong()); // Argument 1
576 args.push_long(usage.used_as_jlong()); // Argument 2
577 args.push_long(usage.committed_as_jlong()); // Argument 3
578 args.push_long(usage.max_size_as_jlong()); // Argument 4
579
580 JavaCalls::call_special(&result,
581 ik,
582 vmSymbols::object_initializer_name(),
583 vmSymbols::long_long_long_long_void_signature(),
584 &args,
585 CHECK_NH);
586 return obj;
587 }
588
589 // GC manager type depends on the type of Generation. Depending on the space
590 // availability and vm options the gc uses major gc manager or minor gc
591 // manager or both. The type of gc manager depends on the generation kind.
592 // For DefNew and ParNew generation doing scavenge gc uses minor gc manager (so
593 // _fullGC is set to false ) and for other generation kinds doing
594 // mark-sweep-compact uses major gc manager (so _fullGC is set to true).
595 TraceMemoryManagerStats::TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause) {
596 switch (kind) {
597 case Generation::DefNew:
598 #if INCLUDE_ALL_GCS
599 case Generation::ParNew:
600 #endif // INCLUDE_ALL_GCS
601 _fullGC = false;
602 break;
603 case Generation::MarkSweepCompact:
604 #if INCLUDE_ALL_GCS
605 case Generation::ConcurrentMarkSweep:
606 #endif // INCLUDE_ALL_GCS
607 _fullGC = true;
608 break;
609 default:
610 _fullGC = false;
611 assert(false, "Unrecognized gc generation kind.");
612 }
613 // this has to be called in a stop the world pause and represent
614 // an entire gc pause, start to finish:
615 initialize(_fullGC, cause, true, true, true, true, true, true, true);
616 }
617
618 TraceMemoryManagerStats::TraceMemoryManagerStats(bool fullGC,
619 GCCause::Cause cause,
620 bool recordGCBeginTime,
621 bool recordPreGCUsage,
622 bool recordPeakUsage,
623 bool recordPostGCUsage,
624 bool recordAccumulatedGCTime,
625 bool recordGCEndTime,
626 bool countCollection) {
627 initialize(fullGC, cause, recordGCBeginTime, recordPreGCUsage, recordPeakUsage,
628 recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime,
629 countCollection);
630 }
631
632 // for a subclass to create then initialize an instance before invoking
633 // the MemoryService
634 void TraceMemoryManagerStats::initialize(bool fullGC,
635 GCCause::Cause cause,
636 bool recordGCBeginTime,
637 bool recordPreGCUsage,
638 bool recordPeakUsage,
639 bool recordPostGCUsage,
640 bool recordAccumulatedGCTime,
641 bool recordGCEndTime,
642 bool countCollection) {
643 _fullGC = fullGC;
644 _recordGCBeginTime = recordGCBeginTime;
645 _recordPreGCUsage = recordPreGCUsage;
646 _recordPeakUsage = recordPeakUsage;
647 _recordPostGCUsage = recordPostGCUsage;
648 _recordAccumulatedGCTime = recordAccumulatedGCTime;
649 _recordGCEndTime = recordGCEndTime;
650 _countCollection = countCollection;
651 _cause = cause;
652
653 MemoryService::gc_begin(_fullGC, _recordGCBeginTime, _recordAccumulatedGCTime,
654 _recordPreGCUsage, _recordPeakUsage);
655 }
656
657 TraceMemoryManagerStats::~TraceMemoryManagerStats() {
658 MemoryService::gc_end(_fullGC, _recordPostGCUsage, _recordAccumulatedGCTime,
659 _recordGCEndTime, _countCollection, _cause);
660 }