1 /*
   2  * Copyright (c) 2003, 2015, 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/cms/concurrentMarkSweepGeneration.hpp"
  51 #include "gc/cms/parNewGeneration.hpp"
  52 #include "gc/g1/g1CollectedHeap.inline.hpp"
  53 #include "gc/parallel/parallelScavengeHeap.hpp"
  54 #include "gc/parallel/psOldGen.hpp"
  55 #include "gc/parallel/psYoungGen.hpp"
  56 #include "services/g1MemoryPool.hpp"
  57 #include "services/psMemoryPool.hpp"
  58 #endif // INCLUDE_ALL_GCS
  59 
  60 GrowableArray<MemoryPool*>* MemoryService::_pools_list =
  61   new (ResourceObj::C_HEAP, mtInternal) GrowableArray<MemoryPool*>(init_pools_list_size, true);
  62 GrowableArray<MemoryManager*>* MemoryService::_managers_list =
  63   new (ResourceObj::C_HEAP, mtInternal) GrowableArray<MemoryManager*>(init_managers_list_size, true);
  64 
  65 GCMemoryManager* MemoryService::_minor_gc_manager      = NULL;
  66 GCMemoryManager* MemoryService::_major_gc_manager      = NULL;
  67 MemoryManager*   MemoryService::_code_cache_manager    = NULL;
  68 GrowableArray<MemoryPool*>* MemoryService::_code_heap_pools =
  69     new (ResourceObj::C_HEAP, mtInternal) GrowableArray<MemoryPool*>(init_code_heap_pools_size, true);
  70 MemoryPool*      MemoryService::_metaspace_pool        = NULL;
  71 MemoryPool*      MemoryService::_compressed_class_pool = NULL;
  72 
  73 class GcThreadCountClosure: public ThreadClosure {
  74  private:
  75   int _count;
  76  public:
  77   GcThreadCountClosure() : _count(0) {};
  78   void do_thread(Thread* thread);
  79   int count() { return _count; }
  80 };
  81 
  82 void GcThreadCountClosure::do_thread(Thread* thread) {
  83   _count++;
  84 }
  85 
  86 void MemoryService::set_universe_heap(CollectedHeap* heap) {
  87   CollectedHeap::Name kind = heap->kind();
  88   switch (kind) {
  89     case CollectedHeap::GenCollectedHeap : {
  90       add_gen_collected_heap_info(GenCollectedHeap::heap());
  91       break;
  92     }
  93 #if INCLUDE_ALL_GCS
  94     case CollectedHeap::ParallelScavengeHeap : {
  95       add_parallel_scavenge_heap_info(ParallelScavengeHeap::heap());
  96       break;
  97     }
  98     case CollectedHeap::G1CollectedHeap : {
  99       add_g1_heap_info(G1CollectedHeap::heap());
 100       break;
 101     }
 102     case CollectedHeap::EpsilonCollectedHeap : {
 103       add_epsilon_heap_info();
 104       break;
 105     }
 106 #endif // INCLUDE_ALL_GCS
 107     default: {
 108       guarantee(false, "Unrecognized kind of heap");
 109     }
 110   }
 111 
 112   // set the GC thread count
 113   GcThreadCountClosure gctcc;
 114   heap->gc_threads_do(&gctcc);
 115   int count = gctcc.count();
 116   if (count > 0) {
 117     _minor_gc_manager->set_num_gc_threads(count);
 118     _major_gc_manager->set_num_gc_threads(count);
 119   }
 120 
 121   // All memory pools and memory managers are initialized.
 122   //
 123   _minor_gc_manager->initialize_gc_stat_info();
 124   _major_gc_manager->initialize_gc_stat_info();
 125 }
 126 
 127 // Add memory pools for GenCollectedHeap
 128 // This function currently only supports two generations collected heap.
 129 // The collector for GenCollectedHeap will have two memory managers.
 130 void MemoryService::add_gen_collected_heap_info(GenCollectedHeap* heap) {
 131   CollectorPolicy* policy = heap->collector_policy();
 132 
 133   assert(policy->is_generation_policy(), "Only support two generations");
 134   GenCollectorPolicy* gen_policy = policy->as_generation_policy();
 135   if (gen_policy != NULL) {
 136     Generation::Name kind = gen_policy->young_gen_spec()->name();
 137     switch (kind) {
 138       case Generation::DefNew:
 139         _minor_gc_manager = MemoryManager::get_copy_memory_manager();
 140         break;
 141 #if INCLUDE_ALL_GCS
 142       case Generation::ParNew:
 143         _minor_gc_manager = MemoryManager::get_parnew_memory_manager();
 144         break;
 145 #endif // INCLUDE_ALL_GCS
 146       default:
 147         guarantee(false, "Unrecognized generation spec");
 148         break;
 149     }
 150     if (policy->is_mark_sweep_policy()) {
 151       _major_gc_manager = MemoryManager::get_msc_memory_manager();
 152 #if INCLUDE_ALL_GCS
 153     } else if (policy->is_concurrent_mark_sweep_policy()) {
 154       _major_gc_manager = MemoryManager::get_cms_memory_manager();
 155 #endif // INCLUDE_ALL_GCS
 156     } else {
 157       guarantee(false, "Unknown two-gen policy");
 158     }
 159   } else {
 160     guarantee(false, "Non two-gen policy");
 161   }
 162   _managers_list->append(_minor_gc_manager);
 163   _managers_list->append(_major_gc_manager);
 164 
 165   add_generation_memory_pool(heap->young_gen(), _major_gc_manager, _minor_gc_manager);
 166   add_generation_memory_pool(heap->old_gen(), _major_gc_manager);
 167 }
 168 
 169 #if INCLUDE_ALL_GCS
 170 // Add memory pools for ParallelScavengeHeap
 171 // This function currently only supports two generations collected heap.
 172 // The collector for ParallelScavengeHeap will have two memory managers.
 173 void MemoryService::add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap) {
 174   // Two managers to keep statistics about _minor_gc_manager and _major_gc_manager GC.
 175   _minor_gc_manager = MemoryManager::get_psScavenge_memory_manager();
 176   _major_gc_manager = MemoryManager::get_psMarkSweep_memory_manager();
 177   _managers_list->append(_minor_gc_manager);
 178   _managers_list->append(_major_gc_manager);
 179 
 180   add_psYoung_memory_pool(heap->young_gen(), _major_gc_manager, _minor_gc_manager);
 181   add_psOld_memory_pool(heap->old_gen(), _major_gc_manager);
 182 }
 183 
 184 void MemoryService::add_g1_heap_info(G1CollectedHeap* g1h) {
 185   assert(UseG1GC, "sanity");
 186 
 187   _minor_gc_manager = MemoryManager::get_g1YoungGen_memory_manager();
 188   _major_gc_manager = MemoryManager::get_g1OldGen_memory_manager();
 189   _managers_list->append(_minor_gc_manager);
 190   _managers_list->append(_major_gc_manager);
 191 
 192   add_g1YoungGen_memory_pool(g1h, _major_gc_manager, _minor_gc_manager);
 193   add_g1OldGen_memory_pool(g1h, _major_gc_manager);
 194 }
 195 
 196 void MemoryService::add_epsilon_heap_info() {
 197   assert(UseEpsilonGC, "sanity");
 198 
 199   _minor_gc_manager = MemoryManager::get_epsilon_memory_manager();
 200   _major_gc_manager = MemoryManager::get_epsilon_memory_manager();
 201   _managers_list->append(_minor_gc_manager);
 202   _managers_list->append(_major_gc_manager);
 203 // TODO: fix these?
 204 //  add_g1YoungGen_memory_pool(g1h, _major_gc_manager, _minor_gc_manager);
 205 //  add_g1OldGen_memory_pool(g1h, _major_gc_manager);
 206 }
 207 #endif // INCLUDE_ALL_GCS
 208 
 209 MemoryPool* MemoryService::add_gen(Generation* gen,
 210                                    const char* name,
 211                                    bool is_heap,
 212                                    bool support_usage_threshold) {
 213 
 214   MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
 215   GenerationPool* pool = new GenerationPool(gen, name, type, support_usage_threshold);
 216   _pools_list->append(pool);
 217   return (MemoryPool*) pool;
 218 }
 219 
 220 MemoryPool* MemoryService::add_space(ContiguousSpace* space,
 221                                      const char* name,
 222                                      bool is_heap,
 223                                      size_t max_size,
 224                                      bool support_usage_threshold) {
 225   MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
 226   ContiguousSpacePool* pool = new ContiguousSpacePool(space, name, type, max_size, support_usage_threshold);
 227 
 228   _pools_list->append(pool);
 229   return (MemoryPool*) pool;
 230 }
 231 
 232 MemoryPool* MemoryService::add_survivor_spaces(DefNewGeneration* young_gen,
 233                                                const char* name,
 234                                                bool is_heap,
 235                                                size_t max_size,
 236                                                bool support_usage_threshold) {
 237   MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
 238   SurvivorContiguousSpacePool* pool = new SurvivorContiguousSpacePool(young_gen, name, type, max_size, support_usage_threshold);
 239 
 240   _pools_list->append(pool);
 241   return (MemoryPool*) pool;
 242 }
 243 
 244 #if INCLUDE_ALL_GCS
 245 MemoryPool* MemoryService::add_cms_space(CompactibleFreeListSpace* space,
 246                                          const char* name,
 247                                          bool is_heap,
 248                                          size_t max_size,
 249                                          bool support_usage_threshold) {
 250   MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
 251   CompactibleFreeListSpacePool* pool = new CompactibleFreeListSpacePool(space, name, type, max_size, support_usage_threshold);
 252   _pools_list->append(pool);
 253   return (MemoryPool*) pool;
 254 }
 255 #endif // INCLUDE_ALL_GCS
 256 
 257 // Add memory pool(s) for one generation
 258 void MemoryService::add_generation_memory_pool(Generation* gen,
 259                                                MemoryManager* major_mgr,
 260                                                MemoryManager* minor_mgr) {
 261   guarantee(gen != NULL, "No generation for memory pool");
 262   Generation::Name kind = gen->kind();
 263   int index = _pools_list->length();
 264 
 265   switch (kind) {
 266     case Generation::DefNew: {
 267       assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
 268       DefNewGeneration* young_gen = (DefNewGeneration*) gen;
 269       // Add a memory pool for each space and young gen doesn't
 270       // support low memory detection as it is expected to get filled up.
 271       MemoryPool* eden = add_space(young_gen->eden(),
 272                                    "Eden Space",
 273                                    true, /* is_heap */
 274                                    young_gen->max_eden_size(),
 275                                    false /* support_usage_threshold */);
 276       MemoryPool* survivor = add_survivor_spaces(young_gen,
 277                                                  "Survivor Space",
 278                                                  true, /* is_heap */
 279                                                  young_gen->max_survivor_size(),
 280                                                  false /* support_usage_threshold */);
 281       break;
 282     }
 283 
 284 #if INCLUDE_ALL_GCS
 285     case Generation::ParNew:
 286     {
 287       assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
 288       // Add a memory pool for each space and young gen doesn't
 289       // support low memory detection as it is expected to get filled up.
 290       ParNewGeneration* parnew_gen = (ParNewGeneration*) gen;
 291       MemoryPool* eden = add_space(parnew_gen->eden(),
 292                                    "Par Eden Space",
 293                                    true /* is_heap */,
 294                                    parnew_gen->max_eden_size(),
 295                                    false /* support_usage_threshold */);
 296       MemoryPool* survivor = add_survivor_spaces(parnew_gen,
 297                                                  "Par Survivor Space",
 298                                                  true, /* is_heap */
 299                                                  parnew_gen->max_survivor_size(),
 300                                                  false /* support_usage_threshold */);
 301 
 302       break;
 303     }
 304 #endif // INCLUDE_ALL_GCS
 305 
 306     case Generation::MarkSweepCompact: {
 307       assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
 308       add_gen(gen,
 309               "Tenured Gen",
 310               true, /* is_heap */
 311               true  /* support_usage_threshold */);
 312       break;
 313     }
 314 
 315 #if INCLUDE_ALL_GCS
 316     case Generation::ConcurrentMarkSweep:
 317     {
 318       assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
 319       ConcurrentMarkSweepGeneration* cms = (ConcurrentMarkSweepGeneration*) gen;
 320       MemoryPool* pool = add_cms_space(cms->cmsSpace(),
 321                                        "CMS Old Gen",
 322                                        true, /* is_heap */
 323                                        cms->reserved().byte_size(),
 324                                        true  /* support_usage_threshold */);
 325       break;
 326     }
 327 #endif // INCLUDE_ALL_GCS
 328 
 329     default:
 330       assert(false, "should not reach here");
 331       // no memory pool added for others
 332       break;
 333   }
 334 
 335   assert(major_mgr != NULL, "Should have at least one manager");
 336   // Link managers and the memory pools together
 337   for (int i = index; i < _pools_list->length(); i++) {
 338     MemoryPool* pool = _pools_list->at(i);
 339     major_mgr->add_pool(pool);
 340     if (minor_mgr != NULL) {
 341       minor_mgr->add_pool(pool);
 342     }
 343   }
 344 }
 345 
 346 
 347 #if INCLUDE_ALL_GCS
 348 void MemoryService::add_psYoung_memory_pool(PSYoungGen* young_gen, MemoryManager* major_mgr, MemoryManager* minor_mgr) {
 349   assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
 350 
 351   // Add a memory pool for each space and young gen doesn't
 352   // support low memory detection as it is expected to get filled up.
 353   EdenMutableSpacePool* eden = new EdenMutableSpacePool(young_gen,
 354                                                         young_gen->eden_space(),
 355                                                         "PS Eden Space",
 356                                                         MemoryPool::Heap,
 357                                                         false /* support_usage_threshold */);
 358 
 359   SurvivorMutableSpacePool* survivor = new SurvivorMutableSpacePool(young_gen,
 360                                                                     "PS Survivor Space",
 361                                                                     MemoryPool::Heap,
 362                                                                     false /* support_usage_threshold */);
 363 
 364   major_mgr->add_pool(eden);
 365   major_mgr->add_pool(survivor);
 366   minor_mgr->add_pool(eden);
 367   minor_mgr->add_pool(survivor);
 368   _pools_list->append(eden);
 369   _pools_list->append(survivor);
 370 }
 371 
 372 void MemoryService::add_psOld_memory_pool(PSOldGen* old_gen, MemoryManager* mgr) {
 373   PSGenerationPool* old_gen_pool = new PSGenerationPool(old_gen,
 374                                                        "PS Old Gen",
 375                                                        MemoryPool::Heap,
 376                                                        true /* support_usage_threshold */);
 377   mgr->add_pool(old_gen_pool);
 378   _pools_list->append(old_gen_pool);
 379 }
 380 
 381 void MemoryService::add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
 382                                                MemoryManager* major_mgr,
 383                                                MemoryManager* minor_mgr) {
 384   assert(major_mgr != NULL && minor_mgr != NULL, "should have two managers");
 385 
 386   G1EdenPool* eden = new G1EdenPool(g1h);
 387   G1SurvivorPool* survivor = new G1SurvivorPool(g1h);
 388 
 389   major_mgr->add_pool(eden);
 390   major_mgr->add_pool(survivor);
 391   minor_mgr->add_pool(eden);
 392   minor_mgr->add_pool(survivor);
 393   _pools_list->append(eden);
 394   _pools_list->append(survivor);
 395 }
 396 
 397 void MemoryService::add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
 398                                              MemoryManager* mgr) {
 399   assert(mgr != NULL, "should have one manager");
 400 
 401   G1OldGenPool* old_gen = new G1OldGenPool(g1h);
 402   mgr->add_pool(old_gen);
 403   _pools_list->append(old_gen);
 404 }
 405 #endif // INCLUDE_ALL_GCS
 406 
 407 void MemoryService::add_code_heap_memory_pool(CodeHeap* heap, const char* name) {
 408   // Create new memory pool for this heap
 409   MemoryPool* code_heap_pool = new CodeHeapPool(heap, name, true /* support_usage_threshold */);
 410 
 411   // Append to lists
 412   _code_heap_pools->append(code_heap_pool);
 413   _pools_list->append(code_heap_pool);
 414 
 415   if (_code_cache_manager == NULL) {
 416     // Create CodeCache memory manager
 417     _code_cache_manager = MemoryManager::get_code_cache_memory_manager();
 418     _managers_list->append(_code_cache_manager);
 419   }
 420 
 421   _code_cache_manager->add_pool(code_heap_pool);
 422 }
 423 
 424 void MemoryService::add_metaspace_memory_pools() {
 425   MemoryManager* mgr = MemoryManager::get_metaspace_memory_manager();
 426 
 427   _metaspace_pool = new MetaspacePool();
 428   mgr->add_pool(_metaspace_pool);
 429   _pools_list->append(_metaspace_pool);
 430 
 431   if (UseCompressedClassPointers) {
 432     _compressed_class_pool = new CompressedKlassSpacePool();
 433     mgr->add_pool(_compressed_class_pool);
 434     _pools_list->append(_compressed_class_pool);
 435   }
 436 
 437   _managers_list->append(mgr);
 438 }
 439 
 440 MemoryManager* MemoryService::get_memory_manager(instanceHandle mh) {
 441   for (int i = 0; i < _managers_list->length(); i++) {
 442     MemoryManager* mgr = _managers_list->at(i);
 443     if (mgr->is_manager(mh)) {
 444       return mgr;
 445     }
 446   }
 447   return NULL;
 448 }
 449 
 450 MemoryPool* MemoryService::get_memory_pool(instanceHandle ph) {
 451   for (int i = 0; i < _pools_list->length(); i++) {
 452     MemoryPool* pool = _pools_list->at(i);
 453     if (pool->is_pool(ph)) {
 454       return pool;
 455     }
 456   }
 457   return NULL;
 458 }
 459 
 460 void MemoryService::track_memory_usage() {
 461   // Track the peak memory usage
 462   for (int i = 0; i < _pools_list->length(); i++) {
 463     MemoryPool* pool = _pools_list->at(i);
 464     pool->record_peak_memory_usage();
 465   }
 466 
 467   // Detect low memory
 468   LowMemoryDetector::detect_low_memory();
 469 }
 470 
 471 void MemoryService::track_memory_pool_usage(MemoryPool* pool) {
 472   // Track the peak memory usage
 473   pool->record_peak_memory_usage();
 474 
 475   // Detect low memory
 476   if (LowMemoryDetector::is_enabled(pool)) {
 477     LowMemoryDetector::detect_low_memory(pool);
 478   }
 479 }
 480 
 481 void MemoryService::gc_begin(bool fullGC, bool recordGCBeginTime,
 482                              bool recordAccumulatedGCTime,
 483                              bool recordPreGCUsage, bool recordPeakUsage) {
 484 
 485   GCMemoryManager* mgr;
 486   if (fullGC) {
 487     mgr = _major_gc_manager;
 488   } else {
 489     mgr = _minor_gc_manager;
 490   }
 491   assert(mgr->is_gc_memory_manager(), "Sanity check");
 492   mgr->gc_begin(recordGCBeginTime, recordPreGCUsage, recordAccumulatedGCTime);
 493 
 494   // Track the peak memory usage when GC begins
 495   if (recordPeakUsage) {
 496     for (int i = 0; i < _pools_list->length(); i++) {
 497       MemoryPool* pool = _pools_list->at(i);
 498       pool->record_peak_memory_usage();
 499     }
 500   }
 501 }
 502 
 503 void MemoryService::gc_end(bool fullGC, bool recordPostGCUsage,
 504                            bool recordAccumulatedGCTime,
 505                            bool recordGCEndTime, bool countCollection,
 506                            GCCause::Cause cause) {
 507 
 508   GCMemoryManager* mgr;
 509   if (fullGC) {
 510     mgr = (GCMemoryManager*) _major_gc_manager;
 511   } else {
 512     mgr = (GCMemoryManager*) _minor_gc_manager;
 513   }
 514   assert(mgr->is_gc_memory_manager(), "Sanity check");
 515 
 516   // register the GC end statistics and memory usage
 517   mgr->gc_end(recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime,
 518               countCollection, cause);
 519 }
 520 
 521 void MemoryService::oops_do(OopClosure* f) {
 522   int i;
 523 
 524   for (i = 0; i < _pools_list->length(); i++) {
 525     MemoryPool* pool = _pools_list->at(i);
 526     pool->oops_do(f);
 527   }
 528   for (i = 0; i < _managers_list->length(); i++) {
 529     MemoryManager* mgr = _managers_list->at(i);
 530     mgr->oops_do(f);
 531   }
 532 }
 533 
 534 bool MemoryService::set_verbose(bool verbose) {
 535   MutexLocker m(Management_lock);
 536   // verbose will be set to the previous value
 537   if (verbose) {
 538     LogConfiguration::configure_stdout(LogLevel::Info, true, LOG_TAGS(gc));
 539   } else {
 540     LogConfiguration::configure_stdout(LogLevel::Off, true, LOG_TAGS(gc));
 541   }
 542   ClassLoadingService::reset_trace_class_unloading();
 543 
 544   return verbose;
 545 }
 546 
 547 Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) {
 548   Klass* k = Management::java_lang_management_MemoryUsage_klass(CHECK_NH);
 549   instanceKlassHandle ik(THREAD, k);
 550 
 551   instanceHandle obj = ik->allocate_instance_handle(CHECK_NH);
 552 
 553   JavaValue result(T_VOID);
 554   JavaCallArguments args(10);
 555   args.push_oop(obj);                         // receiver
 556   args.push_long(usage.init_size_as_jlong()); // Argument 1
 557   args.push_long(usage.used_as_jlong());      // Argument 2
 558   args.push_long(usage.committed_as_jlong()); // Argument 3
 559   args.push_long(usage.max_size_as_jlong());  // Argument 4
 560 
 561   JavaCalls::call_special(&result,
 562                           ik,
 563                           vmSymbols::object_initializer_name(),
 564                           vmSymbols::long_long_long_long_void_signature(),
 565                           &args,
 566                           CHECK_NH);
 567   return obj;
 568 }
 569 
 570 // GC manager type depends on the type of Generation. Depending on the space
 571 // availability and vm options the gc uses major gc manager or minor gc
 572 // manager or both. The type of gc manager depends on the generation kind.
 573 // For DefNew and ParNew generation doing scavenge gc uses minor gc manager (so
 574 // _fullGC is set to false ) and for other generation kinds doing
 575 // mark-sweep-compact uses major gc manager (so _fullGC is set to true).
 576 TraceMemoryManagerStats::TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause) {
 577   switch (kind) {
 578     case Generation::DefNew:
 579 #if INCLUDE_ALL_GCS
 580     case Generation::ParNew:
 581 #endif // INCLUDE_ALL_GCS
 582       _fullGC = false;
 583       break;
 584     case Generation::MarkSweepCompact:
 585 #if INCLUDE_ALL_GCS
 586     case Generation::ConcurrentMarkSweep:
 587 #endif // INCLUDE_ALL_GCS
 588       _fullGC = true;
 589       break;
 590     default:
 591       _fullGC = false;
 592       assert(false, "Unrecognized gc generation kind.");
 593   }
 594   // this has to be called in a stop the world pause and represent
 595   // an entire gc pause, start to finish:
 596   initialize(_fullGC, cause, true, true, true, true, true, true, true);
 597 }
 598 
 599 TraceMemoryManagerStats::TraceMemoryManagerStats(bool fullGC,
 600                                                  GCCause::Cause cause,
 601                                                  bool recordGCBeginTime,
 602                                                  bool recordPreGCUsage,
 603                                                  bool recordPeakUsage,
 604                                                  bool recordPostGCUsage,
 605                                                  bool recordAccumulatedGCTime,
 606                                                  bool recordGCEndTime,
 607                                                  bool countCollection) {
 608   initialize(fullGC, cause, recordGCBeginTime, recordPreGCUsage, recordPeakUsage,
 609              recordPostGCUsage, recordAccumulatedGCTime, recordGCEndTime,
 610              countCollection);
 611 }
 612 
 613 // for a subclass to create then initialize an instance before invoking
 614 // the MemoryService
 615 void TraceMemoryManagerStats::initialize(bool fullGC,
 616                                          GCCause::Cause cause,
 617                                          bool recordGCBeginTime,
 618                                          bool recordPreGCUsage,
 619                                          bool recordPeakUsage,
 620                                          bool recordPostGCUsage,
 621                                          bool recordAccumulatedGCTime,
 622                                          bool recordGCEndTime,
 623                                          bool countCollection) {
 624   _fullGC = fullGC;
 625   _recordGCBeginTime = recordGCBeginTime;
 626   _recordPreGCUsage = recordPreGCUsage;
 627   _recordPeakUsage = recordPeakUsage;
 628   _recordPostGCUsage = recordPostGCUsage;
 629   _recordAccumulatedGCTime = recordAccumulatedGCTime;
 630   _recordGCEndTime = recordGCEndTime;
 631   _countCollection = countCollection;
 632   _cause = cause;
 633 
 634   MemoryService::gc_begin(_fullGC, _recordGCBeginTime, _recordAccumulatedGCTime,
 635                           _recordPreGCUsage, _recordPeakUsage);
 636 }
 637 
 638 TraceMemoryManagerStats::~TraceMemoryManagerStats() {
 639   MemoryService::gc_end(_fullGC, _recordPostGCUsage, _recordAccumulatedGCTime,
 640                         _recordGCEndTime, _countCollection, _cause);
 641 }