jdk8-mips64-public/hotspot: src/share/vm/services/memoryService.cpp@7bb995fbd3c0 (annotated)

src/share/vm/services/memoryService.cpp@7bb995fbd3c0 (annotated)

src/share/vm/services/memoryService.cpp

Thu, 12 Mar 2009 18:16:36 -0700

author: trims
date: Thu, 12 Mar 2009 18:16:36 -0700
changeset 1063: 7bb995fbd3c0
parent 777: 37f87013dfd8
child 1524: db0d5eba9d20
permissions: -rw-r--r--

Merge

 /*
  * Copyright 2003-2006 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */
 # include "incls/_precompiled.incl"
 # include "incls/_memoryService.cpp.incl"
 GrowableArray<MemoryPool*>* MemoryService::_pools_list =
   new (ResourceObj::C_HEAP) GrowableArray<MemoryPool*>(init_pools_list_size, true);
 GrowableArray<MemoryManager*>* MemoryService::_managers_list =
   new (ResourceObj::C_HEAP) GrowableArray<MemoryManager*>(init_managers_list_size, true);
 GCMemoryManager* MemoryService::_minor_gc_manager = NULL;
 GCMemoryManager* MemoryService::_major_gc_manager = NULL;
 MemoryPool*      MemoryService::_code_heap_pool   = NULL;
 class GcThreadCountClosure: public ThreadClosure {
  private:
   int _count;
  public:
   GcThreadCountClosure() : _count(0) {};
   void do_thread(Thread* thread);
   int count() { return _count; }
 };
 void GcThreadCountClosure::do_thread(Thread* thread) {
   _count++;
 }
 void MemoryService::set_universe_heap(CollectedHeap* heap) {
   CollectedHeap::Name kind = heap->kind();
   switch (kind) {
     case CollectedHeap::GenCollectedHeap : {
       add_gen_collected_heap_info(GenCollectedHeap::heap());
       break;
     }
 #ifndef SERIALGC
     case CollectedHeap::ParallelScavengeHeap : {
       add_parallel_scavenge_heap_info(ParallelScavengeHeap::heap());
       break;
     }
     case CollectedHeap::G1CollectedHeap : {
       G1CollectedHeap::g1_unimplemented();
       return;
     }
 #endif // SERIALGC
     default: {
       guarantee(false, "Unrecognized kind of heap");
     }
   }
   // set the GC thread count
   GcThreadCountClosure gctcc;
   heap->gc_threads_do(&gctcc);
   int count = gctcc.count();
   if (count > 0) {
     _minor_gc_manager->set_num_gc_threads(count);
     _major_gc_manager->set_num_gc_threads(count);
   }
   // All memory pools and memory managers are initialized.
   //
   _minor_gc_manager->initialize_gc_stat_info();
   _major_gc_manager->initialize_gc_stat_info();
 }
 // Add memory pools for GenCollectedHeap
 // This function currently only supports two generations collected heap.
 // The collector for GenCollectedHeap will have two memory managers.
 void MemoryService::add_gen_collected_heap_info(GenCollectedHeap* heap) {
   CollectorPolicy* policy = heap->collector_policy();
   assert(policy->is_two_generation_policy(), "Only support two generations");
   guarantee(heap->n_gens() == 2, "Only support two-generation heap");
   TwoGenerationCollectorPolicy* two_gen_policy = policy->as_two_generation_policy();
   if (two_gen_policy != NULL) {
     GenerationSpec** specs = two_gen_policy->generations();
     Generation::Name kind = specs[0]->name();
     switch (kind) {
       case Generation::DefNew:
         _minor_gc_manager = MemoryManager::get_copy_memory_manager();
         break;
 #ifndef SERIALGC
       case Generation::ParNew:
       case Generation::ASParNew:
         _minor_gc_manager = MemoryManager::get_parnew_memory_manager();
         break;
 #endif // SERIALGC
       default:
         guarantee(false, "Unrecognized generation spec");
         break;
     }
     if (policy->is_mark_sweep_policy()) {
       _major_gc_manager = MemoryManager::get_msc_memory_manager();
 #ifndef SERIALGC
     } else if (policy->is_concurrent_mark_sweep_policy()) {
       _major_gc_manager = MemoryManager::get_cms_memory_manager();
 #endif // SERIALGC
     } else {
       guarantee(false, "Unknown two-gen policy");
     }
   } else {
     guarantee(false, "Non two-gen policy");
   }
   _managers_list->append(_minor_gc_manager);
   _managers_list->append(_major_gc_manager);
   add_generation_memory_pool(heap->get_gen(minor), _major_gc_manager, _minor_gc_manager);
   add_generation_memory_pool(heap->get_gen(major), _major_gc_manager);
   PermGen::Name name = policy->permanent_generation()->name();
   switch (name) {
     case PermGen::MarkSweepCompact: {
       CompactingPermGenGen* perm_gen = (CompactingPermGenGen*) heap->perm_gen();
       add_compact_perm_gen_memory_pool(perm_gen, _major_gc_manager);
       break;
     }
 #ifndef SERIALGC
     case PermGen::ConcurrentMarkSweep: {
       CMSPermGenGen* cms_gen = (CMSPermGenGen*) heap->perm_gen();
       add_cms_perm_gen_memory_pool(cms_gen, _major_gc_manager);
       break;
     }
 #endif // SERIALGC
     default:
       guarantee(false, "Unrecognized perm generation");
         break;
   }
 }
 #ifndef SERIALGC
 // Add memory pools for ParallelScavengeHeap
 // This function currently only supports two generations collected heap.
 // The collector for ParallelScavengeHeap will have two memory managers.
 void MemoryService::add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap) {
   // Two managers to keep statistics about _minor_gc_manager and _major_gc_manager GC.
   _minor_gc_manager = MemoryManager::get_psScavenge_memory_manager();
   _major_gc_manager = MemoryManager::get_psMarkSweep_memory_manager();
   _managers_list->append(_minor_gc_manager);
   _managers_list->append(_major_gc_manager);
   add_psYoung_memory_pool(heap->young_gen(), _major_gc_manager, _minor_gc_manager);
   add_psOld_memory_pool(heap->old_gen(), _major_gc_manager);
   add_psPerm_memory_pool(heap->perm_gen(), _major_gc_manager);
 }
 #endif // SERIALGC
 MemoryPool* MemoryService::add_gen(Generation* gen,
                                    const char* name,
                                    bool is_heap,
                                    bool support_usage_threshold) {
   MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
   GenerationPool* pool = new GenerationPool(gen, name, type, support_usage_threshold);
   _pools_list->append(pool);
   return (MemoryPool*) pool;
 }
 MemoryPool* MemoryService::add_space(ContiguousSpace* space,
                                      const char* name,
                                      bool is_heap,
                                      size_t max_size,
                                      bool support_usage_threshold) {
   MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
   ContiguousSpacePool* pool = new ContiguousSpacePool(space, name, type, max_size, support_usage_threshold);
   _pools_list->append(pool);
   return (MemoryPool*) pool;
 }
 MemoryPool* MemoryService::add_survivor_spaces(DefNewGeneration* gen,
                                                const char* name,
                                                bool is_heap,
                                                size_t max_size,
                                                bool support_usage_threshold) {
   MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
   SurvivorContiguousSpacePool* pool = new SurvivorContiguousSpacePool(gen, name, type, max_size, support_usage_threshold);
   _pools_list->append(pool);
   return (MemoryPool*) pool;
 }
 #ifndef SERIALGC
 MemoryPool* MemoryService::add_cms_space(CompactibleFreeListSpace* space,
                                          const char* name,
                                          bool is_heap,
                                          size_t max_size,
                                          bool support_usage_threshold) {
   MemoryPool::PoolType type = (is_heap ? MemoryPool::Heap : MemoryPool::NonHeap);
   CompactibleFreeListSpacePool* pool = new CompactibleFreeListSpacePool(space, name, type, max_size, support_usage_threshold);
   _pools_list->append(pool);
   return (MemoryPool*) pool;
 }
 #endif // SERIALGC
 // Add memory pool(s) for one generation
 void MemoryService::add_generation_memory_pool(Generation* gen,
                                                MemoryManager* major_mgr,
                                                MemoryManager* minor_mgr) {
   Generation::Name kind = gen->kind();
   int index = _pools_list->length();
   switch (kind) {
     case Generation::DefNew: {
       assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
       DefNewGeneration* young_gen = (DefNewGeneration*) gen;
       // Add a memory pool for each space and young gen doesn't
       // support low memory detection as it is expected to get filled up.
       MemoryPool* eden = add_space(young_gen->eden(),
                                    "Eden Space",
                                    true, /* is_heap */
                                    young_gen->max_eden_size(),
                                    false /* support_usage_threshold */);
       MemoryPool* survivor = add_survivor_spaces(young_gen,
                                                  "Survivor Space",
                                                  true, /* is_heap */
                                                  young_gen->max_survivor_size(),
                                                  false /* support_usage_threshold */);
       break;
     }
 #ifndef SERIALGC
     case Generation::ParNew:
     case Generation::ASParNew:
     {
       assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
       // Add a memory pool for each space and young gen doesn't
       // support low memory detection as it is expected to get filled up.
       ParNewGeneration* parnew_gen = (ParNewGeneration*) gen;
       MemoryPool* eden = add_space(parnew_gen->eden(),
                                    "Par Eden Space",
                                    true /* is_heap */,
                                    parnew_gen->max_eden_size(),
                                    false /* support_usage_threshold */);
       MemoryPool* survivor = add_survivor_spaces(parnew_gen,
                                                  "Par Survivor Space",
                                                  true, /* is_heap */
                                                  parnew_gen->max_survivor_size(),
                                                  false /* support_usage_threshold */);
       break;
     }
 #endif // SERIALGC
     case Generation::MarkSweepCompact: {
       assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
       add_gen(gen,
               "Tenured Gen",
               true, /* is_heap */
               true  /* support_usage_threshold */);
       break;
     }
 #ifndef SERIALGC
     case Generation::ConcurrentMarkSweep:
     case Generation::ASConcurrentMarkSweep:
     {
       assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
       ConcurrentMarkSweepGeneration* cms = (ConcurrentMarkSweepGeneration*) gen;
       MemoryPool* pool = add_cms_space(cms->cmsSpace(),
                                        "CMS Old Gen",
                                        true, /* is_heap */
                                        cms->reserved().byte_size(),
                                        true  /* support_usage_threshold */);
       break;
     }
 #endif // SERIALGC
     default:
       assert(false, "should not reach here");
       // no memory pool added for others
       break;
   }
   assert(major_mgr != NULL, "Should have at least one manager");
   // Link managers and the memory pools together
   for (int i = index; i < _pools_list->length(); i++) {
     MemoryPool* pool = _pools_list->at(i);
     major_mgr->add_pool(pool);
     if (minor_mgr != NULL) {
       minor_mgr->add_pool(pool);
     }
   }
 }
 void MemoryService::add_compact_perm_gen_memory_pool(CompactingPermGenGen* perm_gen,
                                                      MemoryManager* mgr) {
   PermanentGenerationSpec* spec = perm_gen->spec();
   size_t max_size = spec->max_size() - spec->read_only_size() - spec->read_write_size();
   MemoryPool* pool = add_space(perm_gen->unshared_space(),
                                "Perm Gen",
                                 false, /* is_heap */
                                 max_size,
                                 true   /* support_usage_threshold */);
   mgr->add_pool(pool);
   if (UseSharedSpaces) {
     pool = add_space(perm_gen->ro_space(),
                      "Perm Gen [shared-ro]",
                      false, /* is_heap */
                      spec->read_only_size(),
                      true   /* support_usage_threshold */);
     mgr->add_pool(pool);
     pool = add_space(perm_gen->rw_space(),
                      "Perm Gen [shared-rw]",
                      false, /* is_heap */
                      spec->read_write_size(),
                      true   /* support_usage_threshold */);
     mgr->add_pool(pool);
   }
 }
 #ifndef SERIALGC
 void MemoryService::add_cms_perm_gen_memory_pool(CMSPermGenGen* cms_gen,
                                                  MemoryManager* mgr) {
   MemoryPool* pool = add_cms_space(cms_gen->cmsSpace(),
                                    "CMS Perm Gen",
                                    false, /* is_heap */
                                    cms_gen->reserved().byte_size(),
                                    true   /* support_usage_threshold */);
   mgr->add_pool(pool);
 }
 void MemoryService::add_psYoung_memory_pool(PSYoungGen* gen, MemoryManager* major_mgr, MemoryManager* minor_mgr) {
   assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
   // Add a memory pool for each space and young gen doesn't
   // support low memory detection as it is expected to get filled up.
   EdenMutableSpacePool* eden = new EdenMutableSpacePool(gen,
                                                         gen->eden_space(),
                                                         "PS Eden Space",
                                                         MemoryPool::Heap,
                                                         false /* support_usage_threshold */);
   SurvivorMutableSpacePool* survivor = new SurvivorMutableSpacePool(gen,
                                                                     "PS Survivor Space",
                                                                     MemoryPool::Heap,
                                                                     false /* support_usage_threshold */);
   major_mgr->add_pool(eden);
   major_mgr->add_pool(survivor);
   minor_mgr->add_pool(eden);
   minor_mgr->add_pool(survivor);
   _pools_list->append(eden);
   _pools_list->append(survivor);
 }
 void MemoryService::add_psOld_memory_pool(PSOldGen* gen, MemoryManager* mgr) {
   PSGenerationPool* old_gen = new PSGenerationPool(gen,
                                                    "PS Old Gen",
                                                    MemoryPool::Heap,
                                                    true /* support_usage_threshold */);
   mgr->add_pool(old_gen);
   _pools_list->append(old_gen);
 }
 void MemoryService::add_psPerm_memory_pool(PSPermGen* gen, MemoryManager* mgr) {
   PSGenerationPool* perm_gen = new PSGenerationPool(gen,
                                                     "PS Perm Gen",
                                                     MemoryPool::NonHeap,
                                                     true /* support_usage_threshold */);
   mgr->add_pool(perm_gen);
   _pools_list->append(perm_gen);
 }
 #endif // SERIALGC
 void MemoryService::add_code_heap_memory_pool(CodeHeap* heap) {
   _code_heap_pool = new CodeHeapPool(heap,
                                      "Code Cache",
                                      true /* support_usage_threshold */);
   MemoryManager* mgr = MemoryManager::get_code_cache_memory_manager();
   mgr->add_pool(_code_heap_pool);
   _pools_list->append(_code_heap_pool);
   _managers_list->append(mgr);
 }
 MemoryManager* MemoryService::get_memory_manager(instanceHandle mh) {
   for (int i = 0; i < _managers_list->length(); i++) {
     MemoryManager* mgr = _managers_list->at(i);
     if (mgr->is_manager(mh)) {
       return mgr;
     }
   }
   return NULL;
 }
 MemoryPool* MemoryService::get_memory_pool(instanceHandle ph) {
   for (int i = 0; i < _pools_list->length(); i++) {
     MemoryPool* pool = _pools_list->at(i);
     if (pool->is_pool(ph)) {
       return pool;
     }
   }
   return NULL;
 }
 void MemoryService::track_memory_usage() {
   // Track the peak memory usage
   for (int i = 0; i < _pools_list->length(); i++) {
     MemoryPool* pool = _pools_list->at(i);
     pool->record_peak_memory_usage();
   }
   // Detect low memory
   LowMemoryDetector::detect_low_memory();
 }
 void MemoryService::track_memory_pool_usage(MemoryPool* pool) {
   // Track the peak memory usage
   pool->record_peak_memory_usage();
   // Detect low memory
   if (LowMemoryDetector::is_enabled(pool)) {
     LowMemoryDetector::detect_low_memory(pool);
   }
 }
 void MemoryService::gc_begin(bool fullGC) {
   GCMemoryManager* mgr;
   if (fullGC) {
     mgr = _major_gc_manager;
   } else {
     mgr = _minor_gc_manager;
   }
   assert(mgr->is_gc_memory_manager(), "Sanity check");
   mgr->gc_begin();
   // Track the peak memory usage when GC begins
   for (int i = 0; i < _pools_list->length(); i++) {
     MemoryPool* pool = _pools_list->at(i);
     pool->record_peak_memory_usage();
   }
 }
 void MemoryService::gc_end(bool fullGC) {
   GCMemoryManager* mgr;
   if (fullGC) {
     mgr = (GCMemoryManager*) _major_gc_manager;
   } else {
     mgr = (GCMemoryManager*) _minor_gc_manager;
   }
   assert(mgr->is_gc_memory_manager(), "Sanity check");
   // register the GC end statistics and memory usage
   mgr->gc_end();
 }
 void MemoryService::oops_do(OopClosure* f) {
   int i;
   for (i = 0; i < _pools_list->length(); i++) {
     MemoryPool* pool = _pools_list->at(i);
     pool->oops_do(f);
   }
   for (i = 0; i < _managers_list->length(); i++) {
     MemoryManager* mgr = _managers_list->at(i);
     mgr->oops_do(f);
   }
 }
 bool MemoryService::set_verbose(bool verbose) {
   MutexLocker m(Management_lock);
   // verbose will be set to the previous value
   bool succeed = CommandLineFlags::boolAtPut((char*)"PrintGC", &verbose, MANAGEMENT);
   assert(succeed, "Setting PrintGC flag fails");
   ClassLoadingService::reset_trace_class_unloading();
   return verbose;
 }
 Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) {
   klassOop k = Management::java_lang_management_MemoryUsage_klass(CHECK_NH);
   instanceKlassHandle ik(THREAD, k);
   instanceHandle obj = ik->allocate_instance_handle(CHECK_NH);
   JavaValue result(T_VOID);
   JavaCallArguments args(10);
   args.push_oop(obj);                         // receiver
   args.push_long(usage.init_size_as_jlong()); // Argument 1
   args.push_long(usage.used_as_jlong());      // Argument 2
   args.push_long(usage.committed_as_jlong()); // Argument 3
   args.push_long(usage.max_size_as_jlong());  // Argument 4
   JavaCalls::call_special(&result,
                           ik,
                           vmSymbolHandles::object_initializer_name(),
                           vmSymbolHandles::long_long_long_long_void_signature(),
                           &args,
                           CHECK_NH);
   return obj;
 }
 //
 // GC manager type depends on the type of Generation. Depending the space
 // availablity and vm option the gc uses major gc manager or minor gc
 // manager or both. The type of gc manager depends on the generation kind.
 // For DefNew, ParNew and ASParNew generation doing scavange gc uses minor
 // gc manager (so _fullGC is set to false ) and for other generation kind
 // DOing mark-sweep-compact uses major gc manager (so _fullGC is set
 // to true).
 TraceMemoryManagerStats::TraceMemoryManagerStats(Generation::Name kind) {
   switch (kind) {
     case Generation::DefNew:
 #ifndef SERIALGC
     case Generation::ParNew:
     case Generation::ASParNew:
 #endif // SERIALGC
       _fullGC=false;
       break;
     case Generation::MarkSweepCompact:
 #ifndef SERIALGC
     case Generation::ConcurrentMarkSweep:
     case Generation::ASConcurrentMarkSweep:
 #endif // SERIALGC
       _fullGC=true;
       break;
     default:
       assert(false, "Unrecognized gc generation kind.");
   }
   MemoryService::gc_begin(_fullGC);
 }
 TraceMemoryManagerStats::TraceMemoryManagerStats(bool fullGC) {
   _fullGC = fullGC;
   MemoryService::gc_begin(_fullGC);
 }
 TraceMemoryManagerStats::~TraceMemoryManagerStats() {
   MemoryService::gc_end(_fullGC);
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/services/memoryService.cpp@7bb995fbd3c0 (annotated)

src/share/vm/services/memoryService.cpp