Mercurial > hg > graal-compiler
view src/share/vm/services/memoryManager.hpp @ 10423:a6697eaddebd
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 19 Jun 2013 21:54:38 +0200 |
parents | 42e370795a39 |
children | 71963b3f802a |
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/* * Copyright (c) 2003, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_SERVICES_MEMORYMANAGER_HPP #define SHARE_VM_SERVICES_MEMORYMANAGER_HPP #include "memory/allocation.hpp" #include "runtime/timer.hpp" #include "services/memoryUsage.hpp" // A memory manager is responsible for managing one or more memory pools. // The garbage collector is one type of memory managers responsible // for reclaiming memory occupied by unreachable objects. A Java virtual // machine may have one or more memory managers. It may // add or remove memory managers during execution. // A memory pool can be managed by more than one memory managers. class MemoryPool; class GCMemoryManager; class OopClosure; class MemoryManager : public CHeapObj<mtInternal> { private: enum { max_num_pools = 10 }; MemoryPool* _pools[max_num_pools]; int _num_pools; protected: volatile instanceOop _memory_mgr_obj; public: enum Name { Abstract, CodeCache, Copy, MarkSweepCompact, ParNew, ConcurrentMarkSweep, PSScavenge, PSMarkSweep, G1YoungGen, G1OldGen }; MemoryManager(); int num_memory_pools() const { return _num_pools; } MemoryPool* get_memory_pool(int index) { assert(index >= 0 && index < _num_pools, "Invalid index"); return _pools[index]; } void add_pool(MemoryPool* pool); bool is_manager(instanceHandle mh) { return mh() == _memory_mgr_obj; } virtual instanceOop get_memory_manager_instance(TRAPS); virtual MemoryManager::Name kind() { return MemoryManager::Abstract; } virtual bool is_gc_memory_manager() { return false; } virtual const char* name() = 0; // GC support void oops_do(OopClosure* f); // Static factory methods to get a memory manager of a specific type static MemoryManager* get_code_cache_memory_manager(); static GCMemoryManager* get_copy_memory_manager(); static GCMemoryManager* get_msc_memory_manager(); static GCMemoryManager* get_parnew_memory_manager(); static GCMemoryManager* get_cms_memory_manager(); static GCMemoryManager* get_psScavenge_memory_manager(); static GCMemoryManager* get_psMarkSweep_memory_manager(); static GCMemoryManager* get_g1YoungGen_memory_manager(); static GCMemoryManager* get_g1OldGen_memory_manager(); }; class CodeCacheMemoryManager : public MemoryManager { private: public: CodeCacheMemoryManager() : MemoryManager() {} MemoryManager::Name kind() { return MemoryManager::CodeCache; } const char* name() { return "CodeCacheManager"; } }; class GCStatInfo : public ResourceObj { private: size_t _index; jlong _start_time; jlong _end_time; // We keep memory usage of all memory pools MemoryUsage* _before_gc_usage_array; MemoryUsage* _after_gc_usage_array; int _usage_array_size; void set_gc_usage(int pool_index, MemoryUsage, bool before_gc); public: GCStatInfo(int num_pools); ~GCStatInfo(); size_t gc_index() { return _index; } jlong start_time() { return _start_time; } jlong end_time() { return _end_time; } int usage_array_size() { return _usage_array_size; } MemoryUsage before_gc_usage_for_pool(int pool_index) { assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); return _before_gc_usage_array[pool_index]; } MemoryUsage after_gc_usage_for_pool(int pool_index) { assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); return _after_gc_usage_array[pool_index]; } MemoryUsage* before_gc_usage_array() { return _before_gc_usage_array; } MemoryUsage* after_gc_usage_array() { return _after_gc_usage_array; } void set_index(size_t index) { _index = index; } void set_start_time(jlong time) { _start_time = time; } void set_end_time(jlong time) { _end_time = time; } void set_before_gc_usage(int pool_index, MemoryUsage usage) { assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); set_gc_usage(pool_index, usage, true /* before gc */); } void set_after_gc_usage(int pool_index, MemoryUsage usage) { assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); set_gc_usage(pool_index, usage, false /* after gc */); } void clear(); }; class GCMemoryManager : public MemoryManager { private: // TODO: We should unify the GCCounter and GCMemoryManager statistic size_t _num_collections; elapsedTimer _accumulated_timer; elapsedTimer _gc_timer; // for measuring every GC duration GCStatInfo* _last_gc_stat; Mutex* _last_gc_lock; GCStatInfo* _current_gc_stat; int _num_gc_threads; volatile bool _notification_enabled; public: GCMemoryManager(); ~GCMemoryManager(); void initialize_gc_stat_info(); bool is_gc_memory_manager() { return true; } jlong gc_time_ms() { return _accumulated_timer.milliseconds(); } size_t gc_count() { return _num_collections; } int num_gc_threads() { return _num_gc_threads; } void set_num_gc_threads(int count) { _num_gc_threads = count; } void gc_begin(bool recordGCBeginTime, bool recordPreGCUsage, bool recordAccumulatedGCTime); void gc_end(bool recordPostGCUsage, bool recordAccumulatedGCTime, bool recordGCEndTime, bool countCollection, GCCause::Cause cause); void reset_gc_stat() { _num_collections = 0; _accumulated_timer.reset(); } // Copy out _last_gc_stat to the given destination, returning // the collection count. Zero signifies no gc has taken place. size_t get_last_gc_stat(GCStatInfo* dest); void set_notification_enabled(bool enabled) { _notification_enabled = enabled; } bool is_notification_enabled() { return _notification_enabled; } virtual MemoryManager::Name kind() = 0; }; // These subclasses of GCMemoryManager are defined to include // GC-specific information. // TODO: Add GC-specific information class CopyMemoryManager : public GCMemoryManager { private: public: CopyMemoryManager() : GCMemoryManager() {} MemoryManager::Name kind() { return MemoryManager::Copy; } const char* name() { return "Copy"; } }; class MSCMemoryManager : public GCMemoryManager { private: public: MSCMemoryManager() : GCMemoryManager() {} MemoryManager::Name kind() { return MemoryManager::MarkSweepCompact; } const char* name() { return "MarkSweepCompact"; } }; class ParNewMemoryManager : public GCMemoryManager { private: public: ParNewMemoryManager() : GCMemoryManager() {} MemoryManager::Name kind() { return MemoryManager::ParNew; } const char* name() { return "ParNew"; } }; class CMSMemoryManager : public GCMemoryManager { private: public: CMSMemoryManager() : GCMemoryManager() {} MemoryManager::Name kind() { return MemoryManager::ConcurrentMarkSweep; } const char* name() { return "ConcurrentMarkSweep";} }; class PSScavengeMemoryManager : public GCMemoryManager { private: public: PSScavengeMemoryManager() : GCMemoryManager() {} MemoryManager::Name kind() { return MemoryManager::PSScavenge; } const char* name() { return "PS Scavenge"; } }; class PSMarkSweepMemoryManager : public GCMemoryManager { private: public: PSMarkSweepMemoryManager() : GCMemoryManager() {} MemoryManager::Name kind() { return MemoryManager::PSMarkSweep; } const char* name() { return "PS MarkSweep"; } }; class G1YoungGenMemoryManager : public GCMemoryManager { private: public: G1YoungGenMemoryManager() : GCMemoryManager() {} MemoryManager::Name kind() { return MemoryManager::G1YoungGen; } const char* name() { return "G1 Young Generation"; } }; class G1OldGenMemoryManager : public GCMemoryManager { private: public: G1OldGenMemoryManager() : GCMemoryManager() {} MemoryManager::Name kind() { return MemoryManager::G1OldGen; } const char* name() { return "G1 Old Generation"; } }; #endif // SHARE_VM_SERVICES_MEMORYMANAGER_HPP