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Java example source code file (memoryService.hpp)
The memoryService.hpp Java example source code/* * Copyright (c) 2003, 2013, 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_MEMORYSERVICE_HPP #define SHARE_VM_SERVICES_MEMORYSERVICE_HPP #include "memory/allocation.hpp" #include "memory/generation.hpp" #include "runtime/handles.hpp" #include "services/memoryUsage.hpp" #include "gc_interface/gcCause.hpp" // Forward declaration class MemoryPool; class MemoryManager; class GCMemoryManager; class CollectedHeap; class Generation; class DefNewGeneration; class PSYoungGen; class PSOldGen; class CodeHeap; class ContiguousSpace; class CompactibleFreeListSpace; class GenCollectedHeap; class ParallelScavengeHeap; class G1CollectedHeap; // VM Monitoring and Management Support class MemoryService : public AllStatic { private: enum { init_pools_list_size = 10, init_managers_list_size = 5 }; // index for minor and major generations enum { minor = 0, major = 1, n_gens = 2 }; static GrowableArray<MemoryPool*>* _pools_list; static GrowableArray<MemoryManager*>* _managers_list; // memory managers for minor and major GC statistics static GCMemoryManager* _major_gc_manager; static GCMemoryManager* _minor_gc_manager; // Code heap memory pool static MemoryPool* _code_heap_pool; static MemoryPool* _metaspace_pool; static MemoryPool* _compressed_class_pool; static void add_generation_memory_pool(Generation* gen, MemoryManager* major_mgr, MemoryManager* minor_mgr); static void add_generation_memory_pool(Generation* gen, MemoryManager* major_mgr) { add_generation_memory_pool(gen, major_mgr, NULL); } static void add_psYoung_memory_pool(PSYoungGen* gen, MemoryManager* major_mgr, MemoryManager* minor_mgr); static void add_psOld_memory_pool(PSOldGen* gen, MemoryManager* mgr); static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h, MemoryManager* major_mgr, MemoryManager* minor_mgr); static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h, MemoryManager* mgr); static MemoryPool* add_space(ContiguousSpace* space, const char* name, bool is_heap, size_t max_size, bool support_usage_threshold); static MemoryPool* add_survivor_spaces(DefNewGeneration* gen, const char* name, bool is_heap, size_t max_size, bool support_usage_threshold); static MemoryPool* add_gen(Generation* gen, const char* name, bool is_heap, bool support_usage_threshold); static MemoryPool* add_cms_space(CompactibleFreeListSpace* space, const char* name, bool is_heap, size_t max_size, bool support_usage_threshold); static void add_gen_collected_heap_info(GenCollectedHeap* heap); static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap); static void add_g1_heap_info(G1CollectedHeap* g1h); public: static void set_universe_heap(CollectedHeap* heap); static void add_code_heap_memory_pool(CodeHeap* heap); static void add_metaspace_memory_pools(); static MemoryPool* get_memory_pool(instanceHandle pool); static MemoryManager* get_memory_manager(instanceHandle mgr); static const int num_memory_pools() { return _pools_list->length(); } static const int num_memory_managers() { return _managers_list->length(); } static MemoryPool* get_memory_pool(int index) { return _pools_list->at(index); } static MemoryManager* get_memory_manager(int index) { return _managers_list->at(index); } static void track_memory_usage(); static void track_code_cache_memory_usage() { track_memory_pool_usage(_code_heap_pool); } static void track_metaspace_memory_usage() { track_memory_pool_usage(_metaspace_pool); } static void track_compressed_class_memory_usage() { track_memory_pool_usage(_compressed_class_pool); } static void track_memory_pool_usage(MemoryPool* pool); static void gc_begin(bool fullGC, bool recordGCBeginTime, bool recordAccumulatedGCTime, bool recordPreGCUsage, bool recordPeakUsage); static void gc_end(bool fullGC, bool recordPostGCUsage, bool recordAccumulatedGCTime, bool recordGCEndTime, bool countCollection, GCCause::Cause cause); static void oops_do(OopClosure* f); static bool get_verbose() { return PrintGC; } static bool set_verbose(bool verbose); // Create an instance of java/lang/management/MemoryUsage static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS); static const GCMemoryManager* get_minor_gc_manager() { return _minor_gc_manager; } static const GCMemoryManager* get_major_gc_manager() { return _major_gc_manager; } }; class TraceMemoryManagerStats : public StackObj { private: bool _fullGC; bool _recordGCBeginTime; bool _recordPreGCUsage; bool _recordPeakUsage; bool _recordPostGCUsage; bool _recordAccumulatedGCTime; bool _recordGCEndTime; bool _countCollection; GCCause::Cause _cause; public: TraceMemoryManagerStats() {} TraceMemoryManagerStats(bool fullGC, GCCause::Cause cause, bool recordGCBeginTime = true, bool recordPreGCUsage = true, bool recordPeakUsage = true, bool recordPostGCUsage = true, bool recordAccumulatedGCTime = true, bool recordGCEndTime = true, bool countCollection = true); void initialize(bool fullGC, GCCause::Cause cause, bool recordGCBeginTime, bool recordPreGCUsage, bool recordPeakUsage, bool recordPostGCUsage, bool recordAccumulatedGCTime, bool recordGCEndTime, bool countCollection); TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause); ~TraceMemoryManagerStats(); }; #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP Other Java examples (source code examples)Here is a short list of links related to this Java memoryService.hpp source code file: |
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