1 /* 2 * Copyright (c) 2003, 2013, 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 static MemoryPool* _metaspace_pool; 77 static MemoryPool* _compressed_class_pool; 78 79 static void add_generation_memory_pool(Generation* gen, 80 MemoryManager* major_mgr, 81 MemoryManager* minor_mgr); 82 static void add_generation_memory_pool(Generation* gen, 83 MemoryManager* major_mgr) { 84 add_generation_memory_pool(gen, major_mgr, NULL); 85 } 86 87 88 static void add_psYoung_memory_pool(PSYoungGen* gen, 89 MemoryManager* major_mgr, 90 MemoryManager* minor_mgr); 91 static void add_psOld_memory_pool(PSOldGen* gen, 92 MemoryManager* mgr); 93 94 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h, 95 MemoryManager* major_mgr, 96 MemoryManager* minor_mgr); 97 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h, 98 MemoryManager* mgr); 99 100 static MemoryPool* add_space(ContiguousSpace* space, 101 const char* name, 102 bool is_heap, 103 size_t max_size, 104 bool support_usage_threshold); 105 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen, 106 const char* name, 107 bool is_heap, 108 size_t max_size, 109 bool support_usage_threshold); 110 static MemoryPool* add_gen(Generation* gen, 111 const char* name, 112 bool is_heap, 113 bool support_usage_threshold); 114 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space, 115 const char* name, 116 bool is_heap, 117 size_t max_size, 118 bool support_usage_threshold); 119 120 static void add_gen_collected_heap_info(GenCollectedHeap* heap); 121 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap); 122 static void add_g1_heap_info(G1CollectedHeap* g1h); 123 124 public: 125 static void set_universe_heap(CollectedHeap* heap); 126 static void add_code_heap_memory_pool(CodeHeap* heap); 127 static void add_metaspace_memory_pools(); 128 129 static MemoryPool* get_memory_pool(instanceHandle pool); 130 static MemoryManager* get_memory_manager(instanceHandle mgr); 131 132 static const int num_memory_pools() { 133 return _pools_list->length(); 134 } 135 static const int num_memory_managers() { 136 return _managers_list->length(); 137 } 138 139 static MemoryPool* get_memory_pool(int index) { 140 return _pools_list->at(index); 141 } 142 143 static MemoryManager* get_memory_manager(int index) { 144 return _managers_list->at(index); 145 } 146 147 static void track_memory_usage(); 148 static void track_code_cache_memory_usage() { 149 track_memory_pool_usage(_code_heap_pool); 150 } 151 static void track_metaspace_memory_usage() { 152 track_memory_pool_usage(_metaspace_pool); 153 } 154 static void track_compressed_class_memory_usage() { 155 track_memory_pool_usage(_compressed_class_pool); 156 } 157 static void track_memory_pool_usage(MemoryPool* pool); 158 159 static void gc_begin(bool fullGC, bool recordGCBeginTime, 160 bool recordAccumulatedGCTime, 161 bool recordPreGCUsage, bool recordPeakUsage); 162 static void gc_end(bool fullGC, bool recordPostGCUsage, 163 bool recordAccumulatedGCTime, 164 bool recordGCEndTime, bool countCollection, 165 GCCause::Cause cause); 166 167 168 static void oops_do(OopClosure* f); 169 170 static bool get_verbose() { return PrintGC; } 171 static bool set_verbose(bool verbose); 172 173 // Create an instance of java/lang/management/MemoryUsage 174 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS); 175 176 static const GCMemoryManager* get_minor_gc_manager() { 177 return _minor_gc_manager; 178 } 179 180 static const GCMemoryManager* get_major_gc_manager() { 181 return _major_gc_manager; 182 } 183 }; 184 185 class TraceMemoryManagerStats : public StackObj { 186 private: 187 bool _fullGC; 188 bool _recordGCBeginTime; 189 bool _recordPreGCUsage; 190 bool _recordPeakUsage; 191 bool _recordPostGCUsage; 192 bool _recordAccumulatedGCTime; 193 bool _recordGCEndTime; 194 bool _countCollection; 195 GCCause::Cause _cause; 196 public: 197 TraceMemoryManagerStats() {} 198 TraceMemoryManagerStats(bool fullGC, 199 GCCause::Cause cause, 200 bool recordGCBeginTime = true, 201 bool recordPreGCUsage = true, 202 bool recordPeakUsage = true, 203 bool recordPostGCUsage = true, 204 bool recordAccumulatedGCTime = true, 205 bool recordGCEndTime = true, 206 bool countCollection = true); 207 208 void initialize(bool fullGC, 209 GCCause::Cause cause, 210 bool recordGCBeginTime, 211 bool recordPreGCUsage, 212 bool recordPeakUsage, 213 bool recordPostGCUsage, 214 bool recordAccumulatedGCTime, 215 bool recordGCEndTime, 216 bool countCollection); 217 218 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause); 219 ~TraceMemoryManagerStats(); 220 }; 221 222 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP