1 /*
2 * Copyright (c) 2003, 2010, 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/permGen.hpp"
37 #include "memory/tenuredGeneration.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "runtime/javaCalls.hpp"
40 #include "services/classLoadingService.hpp"
41 #include "services/lowMemoryDetector.hpp"
42 #include "services/management.hpp"
43 #include "services/memoryManager.hpp"
44 #include "services/memoryPool.hpp"
45 #include "services/memoryService.hpp"
46 #include "utilities/growableArray.hpp"
47 #ifndef SERIALGC
48 #include "gc_implementation/concurrentMarkSweep/cmsPermGen.hpp"
49 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp"
50 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
51 #include "gc_implementation/parNew/parNewGeneration.hpp"
52 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
53 #include "gc_implementation/parallelScavenge/psOldGen.hpp"
54 #include "gc_implementation/parallelScavenge/psPermGen.hpp"
55 #include "gc_implementation/parallelScavenge/psYoungGen.hpp"
56 #include "services/g1MemoryPool.hpp"
57 #include "services/psMemoryPool.hpp"
58 #endif
59
60 GrowableArray<MemoryPool*>* MemoryService::_pools_list =
61 new (ResourceObj::C_HEAP) GrowableArray<MemoryPool*>(init_pools_list_size, true);
62 GrowableArray<MemoryManager*>* MemoryService::_managers_list =
63 new (ResourceObj::C_HEAP) GrowableArray<MemoryManager*>(init_managers_list_size, true);
64
65 GCMemoryManager* MemoryService::_minor_gc_manager = NULL;
66 GCMemoryManager* MemoryService::_major_gc_manager = NULL;
67 MemoryPool* MemoryService::_code_heap_pool = NULL;
68
69 class GcThreadCountClosure: public ThreadClosure {
70 private:
71 int _count;
72 public:
73 GcThreadCountClosure() : _count(0) {};
74 void do_thread(Thread* thread);
75 int count() { return _count; }
76 };
77
78 void GcThreadCountClosure::do_thread(Thread* thread) {
79 _count++;
80 }
81
82 void MemoryService::set_universe_heap(CollectedHeap* heap) {
83 CollectedHeap::Name kind = heap->kind();
84 switch (kind) {
85 case CollectedHeap::GenCollectedHeap : {
86 add_gen_collected_heap_info(GenCollectedHeap::heap());
87 break;
88 }
89 #ifndef SERIALGC
90 case CollectedHeap::ParallelScavengeHeap : {
91 add_parallel_scavenge_heap_info(ParallelScavengeHeap::heap());
92 break;
93 }
94 case CollectedHeap::G1CollectedHeap : {
95 add_g1_heap_info(G1CollectedHeap::heap());
96 break;
97 }
98 #endif // SERIALGC
99 default: {
100 guarantee(false, "Unrecognized kind of heap");
101 }
102 }
103
104 // set the GC thread count
105 GcThreadCountClosure gctcc;
106 heap->gc_threads_do(&gctcc);
107 int count = gctcc.count();
108 if (count > 0) {
109 _minor_gc_manager->set_num_gc_threads(count);
110 _major_gc_manager->set_num_gc_threads(count);
111 }
112
113 // All memory pools and memory managers are initialized.
114 //
115 _minor_gc_manager->initialize_gc_stat_info();
116 _major_gc_manager->initialize_gc_stat_info();
117 }
118
119 // Add memory pools for GenCollectedHeap
120 // This function currently only supports two generations collected heap.
121 // The collector for GenCollectedHeap will have two memory managers.
122 void MemoryService::add_gen_collected_heap_info(GenCollectedHeap* heap) {
123 CollectorPolicy* policy = heap->collector_policy();
124
125 assert(policy->is_two_generation_policy(), "Only support two generations");
126 guarantee(heap->n_gens() == 2, "Only support two-generation heap");
127
128 TwoGenerationCollectorPolicy* two_gen_policy = policy->as_two_generation_policy();
129 if (two_gen_policy != NULL) {
130 GenerationSpec** specs = two_gen_policy->generations();
131 Generation::Name kind = specs[0]->name();
132 switch (kind) {
133 case Generation::DefNew:
134 _minor_gc_manager = MemoryManager::get_copy_memory_manager();
135 break;
136 #ifndef SERIALGC
137 case Generation::ParNew:
138 case Generation::ASParNew:
139 _minor_gc_manager = MemoryManager::get_parnew_memory_manager();
140 break;
141 #endif // SERIALGC
142 default:
143 guarantee(false, "Unrecognized generation spec");
144 break;
145 }
146 if (policy->is_mark_sweep_policy()) {
147 _major_gc_manager = MemoryManager::get_msc_memory_manager();
148 #ifndef SERIALGC
149 } else if (policy->is_concurrent_mark_sweep_policy()) {
150 _major_gc_manager = MemoryManager::get_cms_memory_manager();
151 #endif // SERIALGC
152 } else {
153 guarantee(false, "Unknown two-gen policy");
154 }
155 } else {
156 guarantee(false, "Non two-gen policy");
157 }
158 _managers_list->append(_minor_gc_manager);
159 _managers_list->append(_major_gc_manager);
160
161 add_generation_memory_pool(heap->get_gen(minor), _major_gc_manager, _minor_gc_manager);
162 add_generation_memory_pool(heap->get_gen(major), _major_gc_manager);
163
164 PermGen::Name name = policy->permanent_generation()->name();
165 switch (name) {
166 case PermGen::MarkSweepCompact: {
167 CompactingPermGenGen* perm_gen = (CompactingPermGenGen*) heap->perm_gen();
168 add_compact_perm_gen_memory_pool(perm_gen, _major_gc_manager);
169 break;
170 }
171 #ifndef SERIALGC
172 case PermGen::ConcurrentMarkSweep: {
173 CMSPermGenGen* cms_gen = (CMSPermGenGen*) heap->perm_gen();
174 add_cms_perm_gen_memory_pool(cms_gen, _major_gc_manager);
175 break;
176 }
177 #endif // SERIALGC
178 default:
179 guarantee(false, "Unrecognized perm generation");
180 break;
181 }
182 }
183
184 #ifndef SERIALGC
185 // Add memory pools for ParallelScavengeHeap
186 // This function currently only supports two generations collected heap.
187 // The collector for ParallelScavengeHeap will have two memory managers.
188 void MemoryService::add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap) {
189 // Two managers to keep statistics about _minor_gc_manager and _major_gc_manager GC.
190 _minor_gc_manager = MemoryManager::get_psScavenge_memory_manager();
191 _major_gc_manager = MemoryManager::get_psMarkSweep_memory_manager();
192 _managers_list->append(_minor_gc_manager);
193 _managers_list->append(_major_gc_manager);
194
195 add_psYoung_memory_pool(heap->young_gen(), _major_gc_manager, _minor_gc_manager);
196 add_psOld_memory_pool(heap->old_gen(), _major_gc_manager);
197 add_psPerm_memory_pool(heap->perm_gen(), _major_gc_manager);
198 }
199
200 void MemoryService::add_g1_heap_info(G1CollectedHeap* g1h) {
201 assert(UseG1GC, "sanity");
202
203 _minor_gc_manager = MemoryManager::get_g1YoungGen_memory_manager();
204 _major_gc_manager = MemoryManager::get_g1OldGen_memory_manager();
205 _managers_list->append(_minor_gc_manager);
206 _managers_list->append(_major_gc_manager);
207
208 add_g1YoungGen_memory_pool(g1h, _major_gc_manager, _minor_gc_manager);
209 add_g1OldGen_memory_pool(g1h, _major_gc_manager);
210 add_g1PermGen_memory_pool(g1h, _major_gc_manager);
211 }
212 #endif // SERIALGC
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* 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(gen, name, type, max_size, support_usage_threshold);
244
245 _pools_list->append(pool);
246 return (MemoryPool*) pool;
247 }
248
249 #ifndef SERIALGC
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 // SERIALGC
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 Generation::Name kind = gen->kind();
267 int index = _pools_list->length();
268
269 switch (kind) {
270 case Generation::DefNew: {
271 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
272 DefNewGeneration* young_gen = (DefNewGeneration*) gen;
273 // Add a memory pool for each space and young gen doesn't
274 // support low memory detection as it is expected to get filled up.
275 MemoryPool* eden = add_space(young_gen->eden(),
276 "Eden Space",
277 true, /* is_heap */
278 young_gen->max_eden_size(),
279 false /* support_usage_threshold */);
280 MemoryPool* survivor = add_survivor_spaces(young_gen,
281 "Survivor Space",
282 true, /* is_heap */
283 young_gen->max_survivor_size(),
284 false /* support_usage_threshold */);
285 break;
286 }
287
288 #ifndef SERIALGC
289 case Generation::ParNew:
290 case Generation::ASParNew:
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 // SERIALGC
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 #ifndef SERIALGC
321 case Generation::ConcurrentMarkSweep:
322 case Generation::ASConcurrentMarkSweep:
323 {
324 assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
325 ConcurrentMarkSweepGeneration* cms = (ConcurrentMarkSweepGeneration*) gen;
326 MemoryPool* pool = add_cms_space(cms->cmsSpace(),
327 "CMS Old Gen",
328 true, /* is_heap */
329 cms->reserved().byte_size(),
330 true /* support_usage_threshold */);
331 break;
332 }
333 #endif // SERIALGC
334
335 default:
336 assert(false, "should not reach here");
337 // no memory pool added for others
338 break;
339 }
340
341 assert(major_mgr != NULL, "Should have at least one manager");
342 // Link managers and the memory pools together
343 for (int i = index; i < _pools_list->length(); i++) {
344 MemoryPool* pool = _pools_list->at(i);
345 major_mgr->add_pool(pool);
346 if (minor_mgr != NULL) {
347 minor_mgr->add_pool(pool);
348 }
349 }
350 }
351
352 void MemoryService::add_compact_perm_gen_memory_pool(CompactingPermGenGen* perm_gen,
353 MemoryManager* mgr) {
354 PermanentGenerationSpec* spec = perm_gen->spec();
355 size_t max_size = spec->max_size() - spec->read_only_size() - spec->read_write_size();
356 MemoryPool* pool = add_space(perm_gen->unshared_space(),
357 "Perm Gen",
358 false, /* is_heap */
359 max_size,
360 true /* support_usage_threshold */);
361 mgr->add_pool(pool);
362 if (UseSharedSpaces) {
363 pool = add_space(perm_gen->ro_space(),
364 "Perm Gen [shared-ro]",
365 false, /* is_heap */
366 spec->read_only_size(),
367 true /* support_usage_threshold */);
368 mgr->add_pool(pool);
369
370 pool = add_space(perm_gen->rw_space(),
371 "Perm Gen [shared-rw]",
372 false, /* is_heap */
373 spec->read_write_size(),
374 true /* support_usage_threshold */);
375 mgr->add_pool(pool);
376 }
377 }
378
379 #ifndef SERIALGC
380 void MemoryService::add_cms_perm_gen_memory_pool(CMSPermGenGen* cms_gen,
381 MemoryManager* mgr) {
382
383 MemoryPool* pool = add_cms_space(cms_gen->cmsSpace(),
384 "CMS Perm Gen",
385 false, /* is_heap */
386 cms_gen->reserved().byte_size(),
387 true /* support_usage_threshold */);
388 mgr->add_pool(pool);
389 }
390
391 void MemoryService::add_psYoung_memory_pool(PSYoungGen* gen, MemoryManager* major_mgr, MemoryManager* minor_mgr) {
392 assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
393
394 // Add a memory pool for each space and young gen doesn't
395 // support low memory detection as it is expected to get filled up.
396 EdenMutableSpacePool* eden = new EdenMutableSpacePool(gen,
397 gen->eden_space(),
398 "PS Eden Space",
399 MemoryPool::Heap,
400 false /* support_usage_threshold */);
401
402 SurvivorMutableSpacePool* survivor = new SurvivorMutableSpacePool(gen,
403 "PS Survivor Space",
404 MemoryPool::Heap,
405 false /* support_usage_threshold */);
406
407 major_mgr->add_pool(eden);
408 major_mgr->add_pool(survivor);
409 minor_mgr->add_pool(eden);
410 minor_mgr->add_pool(survivor);
411 _pools_list->append(eden);
412 _pools_list->append(survivor);
413 }
414
415 void MemoryService::add_psOld_memory_pool(PSOldGen* gen, MemoryManager* mgr) {
416 PSGenerationPool* old_gen = new PSGenerationPool(gen,
417 "PS Old Gen",
418 MemoryPool::Heap,
419 true /* support_usage_threshold */);
420 mgr->add_pool(old_gen);
421 _pools_list->append(old_gen);
422 }
423
424 void MemoryService::add_psPerm_memory_pool(PSPermGen* gen, MemoryManager* mgr) {
425 PSGenerationPool* perm_gen = new PSGenerationPool(gen,
426 "PS Perm Gen",
427 MemoryPool::NonHeap,
428 true /* support_usage_threshold */);
429 mgr->add_pool(perm_gen);
430 _pools_list->append(perm_gen);
431 }
432
433 void MemoryService::add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
434 MemoryManager* major_mgr,
435 MemoryManager* minor_mgr) {
436 assert(major_mgr != NULL && minor_mgr != NULL, "should have two managers");
437
438 G1EdenPool* eden = new G1EdenPool(g1h);
439 G1SurvivorPool* survivor = new G1SurvivorPool(g1h);
440
441 major_mgr->add_pool(eden);
442 major_mgr->add_pool(survivor);
443 minor_mgr->add_pool(eden);
444 minor_mgr->add_pool(survivor);
445 _pools_list->append(eden);
446 _pools_list->append(survivor);
447 }
448
449 void MemoryService::add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
450 MemoryManager* mgr) {
451 assert(mgr != NULL, "should have one manager");
452
453 G1OldGenPool* old_gen = new G1OldGenPool(g1h);
454 mgr->add_pool(old_gen);
455 _pools_list->append(old_gen);
456 }
457
458 void MemoryService::add_g1PermGen_memory_pool(G1CollectedHeap* g1h,
459 MemoryManager* mgr) {
460 assert(mgr != NULL, "should have one manager");
461
462 CompactingPermGenGen* perm_gen = (CompactingPermGenGen*) g1h->perm_gen();
463 PermanentGenerationSpec* spec = perm_gen->spec();
464 size_t max_size = spec->max_size() - spec->read_only_size()
465 - spec->read_write_size();
466 MemoryPool* pool = add_space(perm_gen->unshared_space(),
467 "G1 Perm Gen",
468 false, /* is_heap */
469 max_size,
470 true /* support_usage_threshold */);
471 mgr->add_pool(pool);
472
473 // in case we support CDS in G1
474 if (UseSharedSpaces) {
475 pool = add_space(perm_gen->ro_space(),
476 "G1 Perm Gen [shared-ro]",
477 false, /* is_heap */
478 spec->read_only_size(),
479 true /* support_usage_threshold */);
480 mgr->add_pool(pool);
481
482 pool = add_space(perm_gen->rw_space(),
483 "G1 Perm Gen [shared-rw]",
484 false, /* is_heap */
485 spec->read_write_size(),
486 true /* support_usage_threshold */);
487 mgr->add_pool(pool);
488 }
489 }
490 #endif // SERIALGC
491
492 void MemoryService::add_code_heap_memory_pool(CodeHeap* heap) {
493 _code_heap_pool = new CodeHeapPool(heap,
494 "Code Cache",
495 true /* support_usage_threshold */);
496 MemoryManager* mgr = MemoryManager::get_code_cache_memory_manager();
497 mgr->add_pool(_code_heap_pool);
498
499 _pools_list->append(_code_heap_pool);
500 _managers_list->append(mgr);
501 }
502
503 MemoryManager* MemoryService::get_memory_manager(instanceHandle mh) {
504 for (int i = 0; i < _managers_list->length(); i++) {
505 MemoryManager* mgr = _managers_list->at(i);
506 if (mgr->is_manager(mh)) {
507 return mgr;
508 }
509 }
510 return NULL;
511 }
512
513 MemoryPool* MemoryService::get_memory_pool(instanceHandle ph) {
514 for (int i = 0; i < _pools_list->length(); i++) {
515 MemoryPool* pool = _pools_list->at(i);
516 if (pool->is_pool(ph)) {
517 return pool;
518 }
519 }
520 return NULL;
521 }
522
523 void MemoryService::track_memory_usage() {
524 // Track the peak memory usage
525 for (int i = 0; i < _pools_list->length(); i++) {
526 MemoryPool* pool = _pools_list->at(i);
527 pool->record_peak_memory_usage();
528 }
529
530 // Detect low memory
531 LowMemoryDetector::detect_low_memory();
532 }
533
534 void MemoryService::track_memory_pool_usage(MemoryPool* pool) {
535 // Track the peak memory usage
536 pool->record_peak_memory_usage();
537
538 // Detect low memory
539 if (LowMemoryDetector::is_enabled(pool)) {
540 LowMemoryDetector::detect_low_memory(pool);
541 }
542 }
543
544 void MemoryService::gc_begin(bool fullGC, bool recordGCBeginTime,
545 bool recordAccumulatedGCTime,
546 bool recordPreGCUsage, bool recordPeakUsage) {
547
548 GCMemoryManager* mgr;
549 if (fullGC) {
550 mgr = _major_gc_manager;
551 } else {
552 mgr = _minor_gc_manager;
553 }
554 assert(mgr->is_gc_memory_manager(), "Sanity check");
555 mgr->gc_begin(recordGCBeginTime, recordPreGCUsage, recordAccumulatedGCTime);
556
557 // Track the peak memory usage when GC begins
558 if (recordPeakUsage) {
559 for (int i = 0; i < _pools_list->length(); i++) {
560 MemoryPool* pool = _pools_list->at(i);
561 pool->record_peak_memory_usage();
562 }
563 }
564 }
565
566 void MemoryService::gc_end(bool fullGC, bool recordPostGCUsage,
567 bool recordAccumulatedGCTime,
568 bool recordGCEndTime, bool countCollection) {
569
570 GCMemoryManager* mgr;
571 if (fullGC) {
572 mgr = (GCMemoryManager*) _major_gc_manager;
573 } else {
574 mgr = (GCMemoryManager*) _minor_gc_manager;
575 }
576 assert(mgr->is_gc_memory_manager(), "Sanity check");
577
578 // register the GC end statistics and memory usage
579 mgr->gc_end(recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime,
580 countCollection);
581 }
582
583 void MemoryService::oops_do(OopClosure* f) {
584 int i;
585
586 for (i = 0; i < _pools_list->length(); i++) {
587 MemoryPool* pool = _pools_list->at(i);
588 pool->oops_do(f);
589 }
590 for (i = 0; i < _managers_list->length(); i++) {
591 MemoryManager* mgr = _managers_list->at(i);
592 mgr->oops_do(f);
593 }
594 }
595
596 bool MemoryService::set_verbose(bool verbose) {
597 MutexLocker m(Management_lock);
598 // verbose will be set to the previous value
599 bool succeed = CommandLineFlags::boolAtPut((char*)"PrintGC", &verbose, MANAGEMENT);
600 assert(succeed, "Setting PrintGC flag fails");
601 ClassLoadingService::reset_trace_class_unloading();
602
603 return verbose;
604 }
605
606 Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) {
607 klassOop k = Management::java_lang_management_MemoryUsage_klass(CHECK_NH);
608 instanceKlassHandle ik(THREAD, k);
609
610 instanceHandle obj = ik->allocate_instance_handle(CHECK_NH);
611
612 JavaValue result(T_VOID);
613 JavaCallArguments args(10);
614 args.push_oop(obj); // receiver
615 args.push_long(usage.init_size_as_jlong()); // Argument 1
616 args.push_long(usage.used_as_jlong()); // Argument 2
617 args.push_long(usage.committed_as_jlong()); // Argument 3
618 args.push_long(usage.max_size_as_jlong()); // Argument 4
619
620 JavaCalls::call_special(&result,
621 ik,
622 vmSymbolHandles::object_initializer_name(),
623 vmSymbolHandles::long_long_long_long_void_signature(),
624 &args,
625 CHECK_NH);
626 return obj;
627 }
628 //
629 // GC manager type depends on the type of Generation. Depending on the space
630 // availablity and vm options the gc uses major gc manager or minor gc
631 // manager or both. The type of gc manager depends on the generation kind.
632 // For DefNew, ParNew and ASParNew generation doing scavenge gc uses minor
633 // gc manager (so _fullGC is set to false ) and for other generation kinds
634 // doing mark-sweep-compact uses major gc manager (so _fullGC is set
635 // to true).
636 TraceMemoryManagerStats::TraceMemoryManagerStats(Generation::Name kind) {
637 switch (kind) {
638 case Generation::DefNew:
639 #ifndef SERIALGC
640 case Generation::ParNew:
641 case Generation::ASParNew:
642 #endif // SERIALGC
643 _fullGC=false;
644 break;
645 case Generation::MarkSweepCompact:
646 #ifndef SERIALGC
647 case Generation::ConcurrentMarkSweep:
648 case Generation::ASConcurrentMarkSweep:
649 #endif // SERIALGC
650 _fullGC=true;
651 break;
652 default:
653 assert(false, "Unrecognized gc generation kind.");
654 }
655 // this has to be called in a stop the world pause and represent
656 // an entire gc pause, start to finish:
657 initialize(_fullGC, true, true, true, true, true, true, true);
658 }
659 TraceMemoryManagerStats::TraceMemoryManagerStats(bool fullGC,
660 bool recordGCBeginTime,
661 bool recordPreGCUsage,
662 bool recordPeakUsage,
663 bool recordPostGCUsage,
664 bool recordAccumulatedGCTime,
665 bool recordGCEndTime,
666 bool countCollection) {
667 initialize(fullGC, recordGCBeginTime, recordPreGCUsage, recordPeakUsage,
668 recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime,
669 countCollection);
670 }
671
672 // for a subclass to create then initialize an instance before invoking
673 // the MemoryService
674 void TraceMemoryManagerStats::initialize(bool fullGC,
675 bool recordGCBeginTime,
676 bool recordPreGCUsage,
677 bool recordPeakUsage,
678 bool recordPostGCUsage,
679 bool recordAccumulatedGCTime,
680 bool recordGCEndTime,
681 bool countCollection) {
682 _fullGC = fullGC;
683 _recordGCBeginTime = recordGCBeginTime;
684 _recordPreGCUsage = recordPreGCUsage;
685 _recordPeakUsage = recordPeakUsage;
686 _recordPostGCUsage = recordPostGCUsage;
687 _recordAccumulatedGCTime = recordAccumulatedGCTime;
688 _recordGCEndTime = recordGCEndTime;
689 _countCollection = countCollection;
690
691 MemoryService::gc_begin(_fullGC, _recordGCBeginTime, _recordAccumulatedGCTime,
692 _recordPreGCUsage, _recordPeakUsage);
693 }
694
695 TraceMemoryManagerStats::~TraceMemoryManagerStats() {
696 MemoryService::gc_end(_fullGC, _recordPostGCUsage, _recordAccumulatedGCTime,
697 _recordGCEndTime, _countCollection);
698 }
699