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 }; 58 59 // index for minor and major generations 60 enum { 61 minor = 0, 62 major = 1, 63 n_gens = 2 64 }; 65 66 static GrowableArray<MemoryPool*>* _pools_list; 67 static GrowableArray<MemoryManager*>* _managers_list; 68 69 // memory managers for minor and major GC statistics 70 static GCMemoryManager* _major_gc_manager; 71 static GCMemoryManager* _minor_gc_manager; 72 73 // Code heap memory pool 74 static MemoryPool* _code_heap_pool; 75 76 // Metaspace pools 77 static MemoryPool* _metaspace_pool; 78 static MemoryPool* _class_metaspace_pool; 79 80 static void add_generation_memory_pool(Generation* gen, 81 MemoryManager* major_mgr, 82 MemoryManager* minor_mgr); 83 static void add_generation_memory_pool(Generation* gen, 84 MemoryManager* major_mgr) { 85 add_generation_memory_pool(gen, major_mgr, NULL); 86 } 87 88 89 static void add_psYoung_memory_pool(PSYoungGen* gen, 90 MemoryManager* major_mgr, 91 MemoryManager* minor_mgr); 92 static void add_psOld_memory_pool(PSOldGen* gen, 93 MemoryManager* mgr); 94 95 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h, 96 MemoryManager* major_mgr, 97 MemoryManager* minor_mgr); 98 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h, 99 MemoryManager* mgr); 100 101 static MemoryPool* add_space(ContiguousSpace* space, 102 const char* name, 103 bool is_heap, 104 size_t max_size, 105 bool support_usage_threshold); 106 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen, 107 const char* name, 108 bool is_heap, 109 size_t max_size, 110 bool support_usage_threshold); 111 static MemoryPool* add_gen(Generation* gen, 112 const char* name, 113 bool is_heap, 114 bool support_usage_threshold); 115 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space, 116 const char* name, 117 bool is_heap, 118 size_t max_size, 119 bool support_usage_threshold); 120 121 static void add_gen_collected_heap_info(GenCollectedHeap* heap); 122 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap); 123 static void add_g1_heap_info(G1CollectedHeap* g1h); 124 125 public: 126 static void set_universe_heap(CollectedHeap* heap); 127 static void add_code_heap_memory_pool(CodeHeap* heap); 128 static void add_metaspace_memory_pools(); 129 130 static MemoryPool* get_memory_pool(instanceHandle pool); 131 static MemoryManager* get_memory_manager(instanceHandle mgr); 132 133 static const int num_memory_pools() { 134 return _pools_list->length(); 135 } 136 static const int num_memory_managers() { 137 return _managers_list->length(); 138 } 139 140 static MemoryPool* get_memory_pool(int index) { 141 return _pools_list->at(index); 142 } 143 144 static MemoryManager* get_memory_manager(int index) { 145 return _managers_list->at(index); 146 } 147 148 static void track_memory_usage(); 149 static void track_code_cache_memory_usage() { 150 track_memory_pool_usage(_code_heap_pool); 151 } 152 static void track_memory_pool_usage(MemoryPool* pool); 153 154 static void gc_begin(bool fullGC, bool recordGCBeginTime, 155 bool recordAccumulatedGCTime, 156 bool recordPreGCUsage, bool recordPeakUsage); 157 static void gc_end(bool fullGC, bool recordPostGCUsage, 158 bool recordAccumulatedGCTime, 159 bool recordGCEndTime, bool countCollection, 160 GCCause::Cause cause); 161 162 163 static void oops_do(OopClosure* f); 164 165 static bool get_verbose() { return PrintGC; } 166 static bool set_verbose(bool verbose); 167 168 // Create an instance of java/lang/management/MemoryUsage 169 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS); 170 171 static const GCMemoryManager* get_minor_gc_manager() { 172 return _minor_gc_manager; 173 } 174 175 static const GCMemoryManager* get_major_gc_manager() { 176 return _major_gc_manager; 177 } 178 }; 179 180 class TraceMemoryManagerStats : public StackObj { 181 private: 182 bool _fullGC; 183 bool _recordGCBeginTime; 184 bool _recordPreGCUsage; 185 bool _recordPeakUsage; 186 bool _recordPostGCUsage; 187 bool _recordAccumulatedGCTime; 188 bool _recordGCEndTime; 189 bool _countCollection; 190 GCCause::Cause _cause; 191 public: 192 TraceMemoryManagerStats() {} 193 TraceMemoryManagerStats(bool fullGC, 194 GCCause::Cause cause, 195 bool recordGCBeginTime = true, 196 bool recordPreGCUsage = true, 197 bool recordPeakUsage = true, 198 bool recordPostGCUsage = true, 199 bool recordAccumulatedGCTime = true, 200 bool recordGCEndTime = true, 201 bool countCollection = true); 202 203 void initialize(bool fullGC, 204 GCCause::Cause cause, 205 bool recordGCBeginTime, 206 bool recordPreGCUsage, 207 bool recordPeakUsage, 208 bool recordPostGCUsage, 209 bool recordAccumulatedGCTime, 210 bool recordGCEndTime, 211 bool countCollection); 212 213 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause); 214 ~TraceMemoryManagerStats(); 215 }; 216 217 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP