1 /* 2 * Copyright (c) 2003, 2012, 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 #ifndef SHARE_VM_SERVICES_MEMORYSERVICE_HPP 26 #define SHARE_VM_SERVICES_MEMORYSERVICE_HPP 27 28 #include "memory/allocation.hpp" 29 #include "memory/generation.hpp" 30 #include "runtime/handles.hpp" 31 #include "services/memoryUsage.hpp" 32 #include "gc_interface/gcCause.hpp" 33 34 // Forward declaration 35 class MemoryPool; 36 class MemoryManager; 37 class GCMemoryManager; 38 class CollectedHeap; 39 class Generation; 40 class DefNewGeneration; 41 class PSYoungGen; 42 class PSOldGen; 43 class CodeHeap; 44 class ContiguousSpace; 45 class CompactibleFreeListSpace; 46 class GenCollectedHeap; 47 class ParallelScavengeHeap; 48 class G1CollectedHeap; 49 50 // VM Monitoring and Management Support 51 52 class MemoryService : public AllStatic { 53 private: 54 enum { 55 init_pools_list_size = 10, 56 init_managers_list_size = 5, 57 init_code_heap_pools_size = 9 58 }; 59 60 // index for minor and major generations 61 enum { 62 minor = 0, 63 major = 1, 64 n_gens = 2 65 }; 66 67 static GrowableArray<MemoryPool*>* _pools_list; 68 static GrowableArray<MemoryManager*>* _managers_list; 69 70 // memory managers for minor and major GC statistics 71 static GCMemoryManager* _major_gc_manager; 72 static GCMemoryManager* _minor_gc_manager; 73 74 // memory manager and code heap pools for the CodeCache 75 static MemoryManager* _code_cache_manager; 76 static GrowableArray<MemoryPool*>* _code_heap_pools; 77 78 static MemoryPool* _metaspace_pool; 79 static MemoryPool* _compressed_class_pool; 80 81 static void add_generation_memory_pool(Generation* gen, 82 MemoryManager* major_mgr, 83 MemoryManager* minor_mgr); 84 static void add_generation_memory_pool(Generation* gen, 85 MemoryManager* major_mgr) { 86 add_generation_memory_pool(gen, major_mgr, NULL); 87 } 88 89 90 static void add_psYoung_memory_pool(PSYoungGen* gen, 91 MemoryManager* major_mgr, 92 MemoryManager* minor_mgr); 93 static void add_psOld_memory_pool(PSOldGen* gen, 94 MemoryManager* mgr); 95 96 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h, 97 MemoryManager* major_mgr, 98 MemoryManager* minor_mgr); 99 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h, 100 MemoryManager* mgr); 101 102 static MemoryPool* add_space(ContiguousSpace* space, 103 const char* name, 104 bool is_heap, 105 size_t max_size, 106 bool support_usage_threshold); 107 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen, 108 const char* name, 109 bool is_heap, 110 size_t max_size, 111 bool support_usage_threshold); 112 static MemoryPool* add_gen(Generation* gen, 113 const char* name, 114 bool is_heap, 115 bool support_usage_threshold); 116 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space, 117 const char* name, 118 bool is_heap, 119 size_t max_size, 120 bool support_usage_threshold); 121 122 static void add_gen_collected_heap_info(GenCollectedHeap* heap); 123 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap); 124 static void add_g1_heap_info(G1CollectedHeap* g1h); 125 126 public: 127 static void set_universe_heap(CollectedHeap* heap); 128 static void add_code_heap_memory_pool(CodeHeap* heap, const char* name); 129 static void add_metaspace_memory_pools(); 130 131 static MemoryPool* get_memory_pool(instanceHandle pool); 132 static MemoryManager* get_memory_manager(instanceHandle mgr); 133 134 static const int num_memory_pools() { 135 return _pools_list->length(); 136 } 137 static const int num_memory_managers() { 138 return _managers_list->length(); 139 } 140 141 static MemoryPool* get_memory_pool(int index) { 142 return _pools_list->at(index); 143 } 144 145 static MemoryManager* get_memory_manager(int index) { 146 return _managers_list->at(index); 147 } 148 149 static void track_memory_usage(); 150 static void track_code_cache_memory_usage() { 151 // Track memory pool usage of all CodeCache memory pools 152 for (int i = 0; i < _code_heap_pools->length(); ++i) { 153 track_memory_pool_usage(_code_heap_pools->at(i)); 154 } 155 } 156 static void track_memory_pool_usage(MemoryPool* pool); 157 158 static void gc_begin(bool fullGC, bool recordGCBeginTime, 159 bool recordAccumulatedGCTime, 160 bool recordPreGCUsage, bool recordPeakUsage); 161 static void gc_end(bool fullGC, bool recordPostGCUsage, 162 bool recordAccumulatedGCTime, 163 bool recordGCEndTime, bool countCollection, 164 GCCause::Cause cause); 165 166 167 static void oops_do(OopClosure* f); 168 169 static bool get_verbose() { return PrintGC; } 170 static bool set_verbose(bool verbose); 171 172 // Create an instance of java/lang/management/MemoryUsage 173 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS); 174 175 static const GCMemoryManager* get_minor_gc_manager() { 176 return _minor_gc_manager; 177 } 178 179 static const GCMemoryManager* get_major_gc_manager() { 180 return _major_gc_manager; 181 } 182 }; 183 184 class TraceMemoryManagerStats : public StackObj { 185 private: 186 bool _fullGC; 187 bool _recordGCBeginTime; 188 bool _recordPreGCUsage; 189 bool _recordPeakUsage; 190 bool _recordPostGCUsage; 191 bool _recordAccumulatedGCTime; 192 bool _recordGCEndTime; 193 bool _countCollection; 194 GCCause::Cause _cause; 195 public: 196 TraceMemoryManagerStats() {} 197 TraceMemoryManagerStats(bool fullGC, 198 GCCause::Cause cause, 199 bool recordGCBeginTime = true, 200 bool recordPreGCUsage = true, 201 bool recordPeakUsage = true, 202 bool recordPostGCUsage = true, 203 bool recordAccumulatedGCTime = true, 204 bool recordGCEndTime = true, 205 bool countCollection = true); 206 207 void initialize(bool fullGC, 208 GCCause::Cause cause, 209 bool recordGCBeginTime, 210 bool recordPreGCUsage, 211 bool recordPeakUsage, 212 bool recordPostGCUsage, 213 bool recordAccumulatedGCTime, 214 bool recordGCEndTime, 215 bool countCollection); 216 217 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause); 218 ~TraceMemoryManagerStats(); 219 }; 220 221 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP