Mercurial > hg > truffle
annotate src/share/vm/services/memoryManager.hpp @ 17467:55fb97c4c58d hs25-b65
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
| author | mikael |
|---|---|
| date | Tue, 24 Dec 2013 11:48:39 -0800 |
| parents | 71963b3f802a |
| children | 4ca6dc0799b6 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_SERVICES_MEMORYMANAGER_HPP |
| 26 #define SHARE_VM_SERVICES_MEMORYMANAGER_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "runtime/timer.hpp" | |
| 30 #include "services/memoryUsage.hpp" | |
| 31 | |
| 0 | 32 // A memory manager is responsible for managing one or more memory pools. |
| 33 // The garbage collector is one type of memory managers responsible | |
| 34 // for reclaiming memory occupied by unreachable objects. A Java virtual | |
| 35 // machine may have one or more memory managers. It may | |
| 36 // add or remove memory managers during execution. | |
| 37 // A memory pool can be managed by more than one memory managers. | |
| 38 | |
| 39 class MemoryPool; | |
| 40 class GCMemoryManager; | |
| 41 class OopClosure; | |
| 42 | |
| 6197 | 43 class MemoryManager : public CHeapObj<mtInternal> { |
| 0 | 44 private: |
| 45 enum { | |
| 46 max_num_pools = 10 | |
| 47 }; | |
| 48 | |
| 49 MemoryPool* _pools[max_num_pools]; | |
| 50 int _num_pools; | |
| 51 | |
| 52 protected: | |
| 53 volatile instanceOop _memory_mgr_obj; | |
| 54 | |
| 55 public: | |
| 56 enum Name { | |
| 57 Abstract, | |
| 58 CodeCache, | |
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59 Metaspace, |
| 0 | 60 Copy, |
| 61 MarkSweepCompact, | |
| 62 ParNew, | |
| 63 ConcurrentMarkSweep, | |
| 64 PSScavenge, | |
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65 PSMarkSweep, |
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66 G1YoungGen, |
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67 G1OldGen |
| 0 | 68 }; |
| 69 | |
| 70 MemoryManager(); | |
| 71 | |
| 72 int num_memory_pools() const { return _num_pools; } | |
| 73 MemoryPool* get_memory_pool(int index) { | |
| 74 assert(index >= 0 && index < _num_pools, "Invalid index"); | |
| 75 return _pools[index]; | |
| 76 } | |
| 77 | |
| 78 void add_pool(MemoryPool* pool); | |
| 79 | |
| 80 bool is_manager(instanceHandle mh) { return mh() == _memory_mgr_obj; } | |
| 81 | |
| 82 virtual instanceOop get_memory_manager_instance(TRAPS); | |
| 83 virtual MemoryManager::Name kind() { return MemoryManager::Abstract; } | |
| 84 virtual bool is_gc_memory_manager() { return false; } | |
| 85 virtual const char* name() = 0; | |
| 86 | |
| 87 // GC support | |
| 88 void oops_do(OopClosure* f); | |
| 89 | |
| 90 // Static factory methods to get a memory manager of a specific type | |
| 91 static MemoryManager* get_code_cache_memory_manager(); | |
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92 static MemoryManager* get_metaspace_memory_manager(); |
| 0 | 93 static GCMemoryManager* get_copy_memory_manager(); |
| 94 static GCMemoryManager* get_msc_memory_manager(); | |
| 95 static GCMemoryManager* get_parnew_memory_manager(); | |
| 96 static GCMemoryManager* get_cms_memory_manager(); | |
| 97 static GCMemoryManager* get_psScavenge_memory_manager(); | |
| 98 static GCMemoryManager* get_psMarkSweep_memory_manager(); | |
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99 static GCMemoryManager* get_g1YoungGen_memory_manager(); |
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100 static GCMemoryManager* get_g1OldGen_memory_manager(); |
| 0 | 101 |
| 102 }; | |
| 103 | |
| 104 class CodeCacheMemoryManager : public MemoryManager { | |
| 105 private: | |
| 106 public: | |
| 107 CodeCacheMemoryManager() : MemoryManager() {} | |
| 108 | |
| 109 MemoryManager::Name kind() { return MemoryManager::CodeCache; } | |
| 110 const char* name() { return "CodeCacheManager"; } | |
| 111 }; | |
| 112 | |
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113 class MetaspaceMemoryManager : public MemoryManager { |
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114 public: |
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115 MetaspaceMemoryManager() : MemoryManager() {} |
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116 |
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117 MemoryManager::Name kind() { return MemoryManager::Metaspace; } |
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118 const char *name() { return "Metaspace Manager"; } |
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119 }; |
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120 |
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121 class GCStatInfo : public ResourceObj { |
| 0 | 122 private: |
| 123 size_t _index; | |
| 124 jlong _start_time; | |
| 125 jlong _end_time; | |
| 126 | |
| 127 // We keep memory usage of all memory pools | |
| 128 MemoryUsage* _before_gc_usage_array; | |
| 129 MemoryUsage* _after_gc_usage_array; | |
| 130 int _usage_array_size; | |
| 131 | |
| 132 void set_gc_usage(int pool_index, MemoryUsage, bool before_gc); | |
| 133 | |
| 134 public: | |
| 135 GCStatInfo(int num_pools); | |
| 136 ~GCStatInfo(); | |
| 137 | |
| 138 size_t gc_index() { return _index; } | |
| 139 jlong start_time() { return _start_time; } | |
| 140 jlong end_time() { return _end_time; } | |
| 141 int usage_array_size() { return _usage_array_size; } | |
| 142 MemoryUsage before_gc_usage_for_pool(int pool_index) { | |
| 143 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); | |
| 144 return _before_gc_usage_array[pool_index]; | |
| 145 } | |
| 146 MemoryUsage after_gc_usage_for_pool(int pool_index) { | |
| 147 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); | |
| 148 return _after_gc_usage_array[pool_index]; | |
| 149 } | |
| 150 | |
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151 MemoryUsage* before_gc_usage_array() { return _before_gc_usage_array; } |
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152 MemoryUsage* after_gc_usage_array() { return _after_gc_usage_array; } |
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153 |
| 0 | 154 void set_index(size_t index) { _index = index; } |
| 155 void set_start_time(jlong time) { _start_time = time; } | |
| 156 void set_end_time(jlong time) { _end_time = time; } | |
| 157 void set_before_gc_usage(int pool_index, MemoryUsage usage) { | |
| 158 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); | |
| 159 set_gc_usage(pool_index, usage, true /* before gc */); | |
| 160 } | |
| 161 void set_after_gc_usage(int pool_index, MemoryUsage usage) { | |
| 162 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); | |
| 163 set_gc_usage(pool_index, usage, false /* after gc */); | |
| 164 } | |
| 165 | |
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166 void clear(); |
| 0 | 167 }; |
| 168 | |
| 169 class GCMemoryManager : public MemoryManager { | |
| 170 private: | |
| 171 // TODO: We should unify the GCCounter and GCMemoryManager statistic | |
| 172 size_t _num_collections; | |
| 173 elapsedTimer _accumulated_timer; | |
| 174 elapsedTimer _gc_timer; // for measuring every GC duration | |
| 175 GCStatInfo* _last_gc_stat; | |
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176 Mutex* _last_gc_lock; |
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177 GCStatInfo* _current_gc_stat; |
| 0 | 178 int _num_gc_threads; |
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179 volatile bool _notification_enabled; |
| 0 | 180 public: |
| 181 GCMemoryManager(); | |
| 182 ~GCMemoryManager(); | |
| 183 | |
| 184 void initialize_gc_stat_info(); | |
| 185 | |
| 186 bool is_gc_memory_manager() { return true; } | |
| 187 jlong gc_time_ms() { return _accumulated_timer.milliseconds(); } | |
| 188 size_t gc_count() { return _num_collections; } | |
| 189 int num_gc_threads() { return _num_gc_threads; } | |
| 190 void set_num_gc_threads(int count) { _num_gc_threads = count; } | |
| 191 | |
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192 void gc_begin(bool recordGCBeginTime, bool recordPreGCUsage, |
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193 bool recordAccumulatedGCTime); |
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194 void gc_end(bool recordPostGCUsage, bool recordAccumulatedGCTime, |
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195 bool recordGCEndTime, bool countCollection, GCCause::Cause cause); |
| 0 | 196 |
| 197 void reset_gc_stat() { _num_collections = 0; _accumulated_timer.reset(); } | |
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198 |
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199 // Copy out _last_gc_stat to the given destination, returning |
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200 // the collection count. Zero signifies no gc has taken place. |
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201 size_t get_last_gc_stat(GCStatInfo* dest); |
| 0 | 202 |
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203 void set_notification_enabled(bool enabled) { _notification_enabled = enabled; } |
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204 bool is_notification_enabled() { return _notification_enabled; } |
| 0 | 205 virtual MemoryManager::Name kind() = 0; |
| 206 }; | |
| 207 | |
| 208 // These subclasses of GCMemoryManager are defined to include | |
| 209 // GC-specific information. | |
| 210 // TODO: Add GC-specific information | |
| 211 class CopyMemoryManager : public GCMemoryManager { | |
| 212 private: | |
| 213 public: | |
| 214 CopyMemoryManager() : GCMemoryManager() {} | |
| 215 | |
| 216 MemoryManager::Name kind() { return MemoryManager::Copy; } | |
| 217 const char* name() { return "Copy"; } | |
| 218 }; | |
| 219 | |
| 220 class MSCMemoryManager : public GCMemoryManager { | |
| 221 private: | |
| 222 public: | |
| 223 MSCMemoryManager() : GCMemoryManager() {} | |
| 224 | |
| 225 MemoryManager::Name kind() { return MemoryManager::MarkSweepCompact; } | |
| 226 const char* name() { return "MarkSweepCompact"; } | |
| 227 | |
| 228 }; | |
| 229 | |
| 230 class ParNewMemoryManager : public GCMemoryManager { | |
| 231 private: | |
| 232 public: | |
| 233 ParNewMemoryManager() : GCMemoryManager() {} | |
| 234 | |
| 235 MemoryManager::Name kind() { return MemoryManager::ParNew; } | |
| 236 const char* name() { return "ParNew"; } | |
| 237 | |
| 238 }; | |
| 239 | |
| 240 class CMSMemoryManager : public GCMemoryManager { | |
| 241 private: | |
| 242 public: | |
| 243 CMSMemoryManager() : GCMemoryManager() {} | |
| 244 | |
| 245 MemoryManager::Name kind() { return MemoryManager::ConcurrentMarkSweep; } | |
| 246 const char* name() { return "ConcurrentMarkSweep";} | |
| 247 | |
| 248 }; | |
| 249 | |
| 250 class PSScavengeMemoryManager : public GCMemoryManager { | |
| 251 private: | |
| 252 public: | |
| 253 PSScavengeMemoryManager() : GCMemoryManager() {} | |
| 254 | |
| 255 MemoryManager::Name kind() { return MemoryManager::PSScavenge; } | |
| 256 const char* name() { return "PS Scavenge"; } | |
| 257 | |
| 258 }; | |
| 259 | |
| 260 class PSMarkSweepMemoryManager : public GCMemoryManager { | |
| 261 private: | |
| 262 public: | |
| 263 PSMarkSweepMemoryManager() : GCMemoryManager() {} | |
| 264 | |
| 265 MemoryManager::Name kind() { return MemoryManager::PSMarkSweep; } | |
| 266 const char* name() { return "PS MarkSweep"; } | |
| 267 }; | |
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268 |
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269 class G1YoungGenMemoryManager : public GCMemoryManager { |
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270 private: |
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271 public: |
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272 G1YoungGenMemoryManager() : GCMemoryManager() {} |
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273 |
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274 MemoryManager::Name kind() { return MemoryManager::G1YoungGen; } |
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275 const char* name() { return "G1 Young Generation"; } |
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276 }; |
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277 |
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278 class G1OldGenMemoryManager : public GCMemoryManager { |
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279 private: |
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280 public: |
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281 G1OldGenMemoryManager() : GCMemoryManager() {} |
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282 |
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283 MemoryManager::Name kind() { return MemoryManager::G1OldGen; } |
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284 const char* name() { return "G1 Old Generation"; } |
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285 }; |
| 1972 | 286 |
| 287 #endif // SHARE_VM_SERVICES_MEMORYMANAGER_HPP |