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