Mercurial > hg > truffle
annotate src/share/vm/services/memoryService.cpp @ 5334:ecc2b68344de
turn off priority compilation queue
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Wed, 02 May 2012 12:59:59 +0200 |
parents | 78542e2b5e35 |
children | d2a62e0f25eb |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, 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 | |
1972 | 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 | |
0 | 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 } | |
342 | 94 case CollectedHeap::G1CollectedHeap : { |
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95 add_g1_heap_info(G1CollectedHeap::heap()); |
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96 break; |
342 | 97 } |
0 | 98 #endif // SERIALGC |
99 default: { | |
342 | 100 guarantee(false, "Unrecognized kind of heap"); |
0 | 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 } | |
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199 |
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200 void MemoryService::add_g1_heap_info(G1CollectedHeap* g1h) { |
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201 assert(UseG1GC, "sanity"); |
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202 |
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203 _minor_gc_manager = MemoryManager::get_g1YoungGen_memory_manager(); |
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204 _major_gc_manager = MemoryManager::get_g1OldGen_memory_manager(); |
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205 _managers_list->append(_minor_gc_manager); |
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206 _managers_list->append(_major_gc_manager); |
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207 |
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208 add_g1YoungGen_memory_pool(g1h, _major_gc_manager, _minor_gc_manager); |
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209 add_g1OldGen_memory_pool(g1h, _major_gc_manager); |
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210 add_g1PermGen_memory_pool(g1h, _major_gc_manager); |
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211 } |
0 | 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 } | |
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432 |
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433 void MemoryService::add_g1YoungGen_memory_pool(G1CollectedHeap* g1h, |
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434 MemoryManager* major_mgr, |
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435 MemoryManager* minor_mgr) { |
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436 assert(major_mgr != NULL && minor_mgr != NULL, "should have two managers"); |
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437 |
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438 G1EdenPool* eden = new G1EdenPool(g1h); |
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439 G1SurvivorPool* survivor = new G1SurvivorPool(g1h); |
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440 |
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441 major_mgr->add_pool(eden); |
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442 major_mgr->add_pool(survivor); |
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443 minor_mgr->add_pool(eden); |
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444 minor_mgr->add_pool(survivor); |
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445 _pools_list->append(eden); |
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446 _pools_list->append(survivor); |
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447 } |
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448 |
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449 void MemoryService::add_g1OldGen_memory_pool(G1CollectedHeap* g1h, |
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450 MemoryManager* mgr) { |
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451 assert(mgr != NULL, "should have one manager"); |
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452 |
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453 G1OldGenPool* old_gen = new G1OldGenPool(g1h); |
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454 mgr->add_pool(old_gen); |
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455 _pools_list->append(old_gen); |
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456 } |
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457 |
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458 void MemoryService::add_g1PermGen_memory_pool(G1CollectedHeap* g1h, |
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459 MemoryManager* mgr) { |
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460 assert(mgr != NULL, "should have one manager"); |
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461 |
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462 CompactingPermGenGen* perm_gen = (CompactingPermGenGen*) g1h->perm_gen(); |
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463 PermanentGenerationSpec* spec = perm_gen->spec(); |
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464 size_t max_size = spec->max_size() - spec->read_only_size() |
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465 - spec->read_write_size(); |
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466 MemoryPool* pool = add_space(perm_gen->unshared_space(), |
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467 "G1 Perm Gen", |
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468 false, /* is_heap */ |
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469 max_size, |
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470 true /* support_usage_threshold */); |
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471 mgr->add_pool(pool); |
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472 |
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473 // in case we support CDS in G1 |
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474 if (UseSharedSpaces) { |
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475 pool = add_space(perm_gen->ro_space(), |
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476 "G1 Perm Gen [shared-ro]", |
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477 false, /* is_heap */ |
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478 spec->read_only_size(), |
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479 true /* support_usage_threshold */); |
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480 mgr->add_pool(pool); |
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481 |
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482 pool = add_space(perm_gen->rw_space(), |
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483 "G1 Perm Gen [shared-rw]", |
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484 false, /* is_heap */ |
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485 spec->read_write_size(), |
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486 true /* support_usage_threshold */); |
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487 mgr->add_pool(pool); |
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488 } |
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489 } |
0 | 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 | |
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544 void MemoryService::gc_begin(bool fullGC, bool recordGCBeginTime, |
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545 bool recordAccumulatedGCTime, |
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546 bool recordPreGCUsage, bool recordPeakUsage) { |
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547 |
0 | 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"); | |
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555 mgr->gc_begin(recordGCBeginTime, recordPreGCUsage, recordAccumulatedGCTime); |
0 | 556 |
557 // Track the peak memory usage when GC begins | |
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558 if (recordPeakUsage) { |
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559 for (int i = 0; i < _pools_list->length(); i++) { |
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560 MemoryPool* pool = _pools_list->at(i); |
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561 pool->record_peak_memory_usage(); |
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562 } |
0 | 563 } |
564 } | |
565 | |
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566 void MemoryService::gc_end(bool fullGC, bool recordPostGCUsage, |
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567 bool recordAccumulatedGCTime, |
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568 bool recordGCEndTime, bool countCollection, |
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569 GCCause::Cause cause) { |
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570 |
0 | 571 GCMemoryManager* mgr; |
572 if (fullGC) { | |
573 mgr = (GCMemoryManager*) _major_gc_manager; | |
574 } else { | |
575 mgr = (GCMemoryManager*) _minor_gc_manager; | |
576 } | |
577 assert(mgr->is_gc_memory_manager(), "Sanity check"); | |
578 | |
579 // register the GC end statistics and memory usage | |
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580 mgr->gc_end(recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime, |
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581 countCollection, cause); |
0 | 582 } |
583 | |
584 void MemoryService::oops_do(OopClosure* f) { | |
585 int i; | |
586 | |
587 for (i = 0; i < _pools_list->length(); i++) { | |
588 MemoryPool* pool = _pools_list->at(i); | |
589 pool->oops_do(f); | |
590 } | |
591 for (i = 0; i < _managers_list->length(); i++) { | |
592 MemoryManager* mgr = _managers_list->at(i); | |
593 mgr->oops_do(f); | |
594 } | |
595 } | |
596 | |
597 bool MemoryService::set_verbose(bool verbose) { | |
598 MutexLocker m(Management_lock); | |
599 // verbose will be set to the previous value | |
600 bool succeed = CommandLineFlags::boolAtPut((char*)"PrintGC", &verbose, MANAGEMENT); | |
601 assert(succeed, "Setting PrintGC flag fails"); | |
602 ClassLoadingService::reset_trace_class_unloading(); | |
603 | |
604 return verbose; | |
605 } | |
606 | |
607 Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) { | |
608 klassOop k = Management::java_lang_management_MemoryUsage_klass(CHECK_NH); | |
609 instanceKlassHandle ik(THREAD, k); | |
610 | |
611 instanceHandle obj = ik->allocate_instance_handle(CHECK_NH); | |
612 | |
613 JavaValue result(T_VOID); | |
614 JavaCallArguments args(10); | |
615 args.push_oop(obj); // receiver | |
616 args.push_long(usage.init_size_as_jlong()); // Argument 1 | |
617 args.push_long(usage.used_as_jlong()); // Argument 2 | |
618 args.push_long(usage.committed_as_jlong()); // Argument 3 | |
619 args.push_long(usage.max_size_as_jlong()); // Argument 4 | |
620 | |
621 JavaCalls::call_special(&result, | |
622 ik, | |
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623 vmSymbols::object_initializer_name(), |
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624 vmSymbols::long_long_long_long_void_signature(), |
0 | 625 &args, |
626 CHECK_NH); | |
627 return obj; | |
628 } | |
629 // | |
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630 // GC manager type depends on the type of Generation. Depending on the space |
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631 // availablity and vm options the gc uses major gc manager or minor gc |
0 | 632 // manager or both. The type of gc manager depends on the generation kind. |
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633 // For DefNew, ParNew and ASParNew generation doing scavenge gc uses minor |
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634 // gc manager (so _fullGC is set to false ) and for other generation kinds |
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635 // doing mark-sweep-compact uses major gc manager (so _fullGC is set |
0 | 636 // to true). |
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637 TraceMemoryManagerStats::TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause) { |
0 | 638 switch (kind) { |
639 case Generation::DefNew: | |
640 #ifndef SERIALGC | |
641 case Generation::ParNew: | |
642 case Generation::ASParNew: | |
643 #endif // SERIALGC | |
644 _fullGC=false; | |
645 break; | |
646 case Generation::MarkSweepCompact: | |
647 #ifndef SERIALGC | |
648 case Generation::ConcurrentMarkSweep: | |
649 case Generation::ASConcurrentMarkSweep: | |
650 #endif // SERIALGC | |
651 _fullGC=true; | |
652 break; | |
653 default: | |
654 assert(false, "Unrecognized gc generation kind."); | |
655 } | |
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656 // this has to be called in a stop the world pause and represent |
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657 // an entire gc pause, start to finish: |
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658 initialize(_fullGC, cause,true, true, true, true, true, true, true); |
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659 } |
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660 TraceMemoryManagerStats::TraceMemoryManagerStats(bool fullGC, |
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661 GCCause::Cause cause, |
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662 bool recordGCBeginTime, |
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663 bool recordPreGCUsage, |
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664 bool recordPeakUsage, |
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665 bool recordPostGCUsage, |
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666 bool recordAccumulatedGCTime, |
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667 bool recordGCEndTime, |
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668 bool countCollection) { |
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669 initialize(fullGC, cause, recordGCBeginTime, recordPreGCUsage, recordPeakUsage, |
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670 recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime, |
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671 countCollection); |
0 | 672 } |
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673 |
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674 // for a subclass to create then initialize an instance before invoking |
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675 // the MemoryService |
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676 void TraceMemoryManagerStats::initialize(bool fullGC, |
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677 GCCause::Cause cause, |
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678 bool recordGCBeginTime, |
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679 bool recordPreGCUsage, |
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680 bool recordPeakUsage, |
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681 bool recordPostGCUsage, |
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682 bool recordAccumulatedGCTime, |
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683 bool recordGCEndTime, |
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684 bool countCollection) { |
0 | 685 _fullGC = fullGC; |
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686 _recordGCBeginTime = recordGCBeginTime; |
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687 _recordPreGCUsage = recordPreGCUsage; |
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688 _recordPeakUsage = recordPeakUsage; |
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689 _recordPostGCUsage = recordPostGCUsage; |
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690 _recordAccumulatedGCTime = recordAccumulatedGCTime; |
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691 _recordGCEndTime = recordGCEndTime; |
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692 _countCollection = countCollection; |
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693 _cause = cause; |
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694 |
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695 MemoryService::gc_begin(_fullGC, _recordGCBeginTime, _recordAccumulatedGCTime, |
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696 _recordPreGCUsage, _recordPeakUsage); |
0 | 697 } |
698 | |
699 TraceMemoryManagerStats::~TraceMemoryManagerStats() { | |
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700 MemoryService::gc_end(_fullGC, _recordPostGCUsage, _recordAccumulatedGCTime, |
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701 _recordGCEndTime, _countCollection, _cause); |
0 | 702 } |
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703 |