1 /* 2 * Copyright (c) 2003, 2015, 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 static GrowableArray<MemoryPool*>* _pools_list; 61 static GrowableArray<MemoryManager*>* _managers_list; 62 63 // memory managers for minor and major GC statistics 64 static GCMemoryManager* _major_gc_manager; 65 static GCMemoryManager* _minor_gc_manager; 66 67 // memory manager and code heap pools for the CodeCache 68 static MemoryManager* _code_cache_manager; 69 static GrowableArray<MemoryPool*>* _code_heap_pools; 70 71 static MemoryPool* _metaspace_pool; 72 static MemoryPool* _compressed_class_pool; 73 74 static void add_generation_memory_pool(Generation* gen, 75 MemoryManager* major_mgr, 76 MemoryManager* minor_mgr); 77 static void add_generation_memory_pool(Generation* gen, 78 MemoryManager* major_mgr) { 79 add_generation_memory_pool(gen, major_mgr, NULL); 80 } 81 82 83 static void add_psYoung_memory_pool(PSYoungGen* gen, 84 MemoryManager* major_mgr, 85 MemoryManager* minor_mgr); 86 static void add_psOld_memory_pool(PSOldGen* gen, 87 MemoryManager* mgr); 88 89 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h, 90 MemoryManager* major_mgr, 91 MemoryManager* minor_mgr); 92 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h, 93 MemoryManager* mgr); 94 95 static MemoryPool* add_space(ContiguousSpace* space, 96 const char* name, 97 bool is_heap, 98 size_t max_size, 99 bool support_usage_threshold); 100 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen, 101 const char* name, 102 bool is_heap, 103 size_t max_size, 104 bool support_usage_threshold); 105 static MemoryPool* add_gen(Generation* gen, 106 const char* name, 107 bool is_heap, 108 bool support_usage_threshold); 109 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space, 110 const char* name, 111 bool is_heap, 112 size_t max_size, 113 bool support_usage_threshold); 114 115 static void add_gen_collected_heap_info(GenCollectedHeap* heap); 116 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap); 117 static void add_g1_heap_info(G1CollectedHeap* g1h); 118 119 public: 120 static void set_universe_heap(CollectedHeap* heap); 121 static void add_code_heap_memory_pool(CodeHeap* heap, const char* name); 122 static void add_metaspace_memory_pools(); 123 124 static MemoryPool* get_memory_pool(instanceHandle pool); 125 static MemoryManager* get_memory_manager(instanceHandle mgr); 126 127 static const int num_memory_pools() { 128 return _pools_list->length(); 129 } 130 static const int num_memory_managers() { 131 return _managers_list->length(); 132 } 133 134 static MemoryPool* get_memory_pool(int index) { 135 return _pools_list->at(index); 136 } 137 138 static MemoryManager* get_memory_manager(int index) { 139 return _managers_list->at(index); 140 } 141 142 static void track_memory_usage(); 143 static void track_code_cache_memory_usage() { 144 // Track memory pool usage of all CodeCache memory pools 145 for (int i = 0; i < _code_heap_pools->length(); ++i) { 146 track_memory_pool_usage(_code_heap_pools->at(i)); 147 } 148 } 149 static void track_metaspace_memory_usage() { 150 track_memory_pool_usage(_metaspace_pool); 151 } 152 static void track_compressed_class_memory_usage() { 153 track_memory_pool_usage(_compressed_class_pool); 154 } 155 static void track_memory_pool_usage(MemoryPool* pool); 156 157 static void gc_begin(bool fullGC, bool recordGCBeginTime, 158 bool recordAccumulatedGCTime, 159 bool recordPreGCUsage, bool recordPeakUsage); 160 static void gc_end(bool fullGC, bool recordPostGCUsage, 161 bool recordAccumulatedGCTime, 162 bool recordGCEndTime, bool countCollection, 163 GCCause::Cause cause); 164 165 166 static void oops_do(OopClosure* f); 167 168 static bool get_verbose() { return PrintGC; } 169 static bool set_verbose(bool verbose); 170 171 // Create an instance of java/lang/management/MemoryUsage 172 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS); 173 174 static const GCMemoryManager* get_minor_gc_manager() { 175 return _minor_gc_manager; 176 } 177 178 static const GCMemoryManager* get_major_gc_manager() { 179 return _major_gc_manager; 180 } 181 }; 182 183 class TraceMemoryManagerStats : public StackObj { 184 private: 185 bool _fullGC; 186 bool _recordGCBeginTime; 187 bool _recordPreGCUsage; 188 bool _recordPeakUsage; 189 bool _recordPostGCUsage; 190 bool _recordAccumulatedGCTime; 191 bool _recordGCEndTime; 192 bool _countCollection; 193 GCCause::Cause _cause; 194 public: 195 TraceMemoryManagerStats() {} 196 TraceMemoryManagerStats(bool fullGC, 197 GCCause::Cause cause, 198 bool recordGCBeginTime = true, 199 bool recordPreGCUsage = true, 200 bool recordPeakUsage = true, 201 bool recordPostGCUsage = true, 202 bool recordAccumulatedGCTime = true, 203 bool recordGCEndTime = true, 204 bool countCollection = true); 205 206 void initialize(bool fullGC, 207 GCCause::Cause cause, 208 bool recordGCBeginTime, 209 bool recordPreGCUsage, 210 bool recordPeakUsage, 211 bool recordPostGCUsage, 212 bool recordAccumulatedGCTime, 213 bool recordGCEndTime, 214 bool countCollection); 215 216 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause); 217 ~TraceMemoryManagerStats(); 218 }; 219 220 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP