Mercurial > hg > graal-compiler
annotate src/share/vm/services/memoryPool.hpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | f95d63e2154a |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2003, 2004, 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 | |
| 25 // A memory pool represents the memory area that the VM manages. | |
| 26 // The Java virtual machine has at least one memory pool | |
| 27 // and it may create or remove memory pools during execution. | |
| 28 // A memory pool can belong to the heap or the non-heap memory. | |
| 29 // A Java virtual machine may also have memory pools belonging to | |
| 30 // both heap and non-heap memory. | |
| 31 | |
| 32 // Forward declaration | |
| 33 class MemoryManager; | |
| 34 class SensorInfo; | |
| 35 class Generation; | |
| 36 class DefNewGeneration; | |
| 37 class PSPermGen; | |
| 38 class PermGen; | |
| 39 class ThresholdSupport; | |
| 40 | |
| 41 class MemoryPool : public CHeapObj { | |
| 42 friend class MemoryManager; | |
| 43 public: | |
| 44 enum PoolType { | |
| 45 Heap = 1, | |
| 46 NonHeap = 2 | |
| 47 }; | |
| 48 | |
| 49 private: | |
| 50 enum { | |
| 51 max_num_managers = 5 | |
| 52 }; | |
| 53 | |
| 54 // We could make some of the following as performance counters | |
| 55 // for external monitoring. | |
| 56 const char* _name; | |
| 57 PoolType _type; | |
| 58 size_t _initial_size; | |
| 59 size_t _max_size; | |
| 60 bool _available_for_allocation; // Default is true | |
| 61 MemoryManager* _managers[max_num_managers]; | |
| 62 int _num_managers; | |
| 63 MemoryUsage _peak_usage; // Peak memory usage | |
| 64 MemoryUsage _after_gc_usage; // After GC memory usage | |
| 65 | |
| 66 ThresholdSupport* _usage_threshold; | |
| 67 ThresholdSupport* _gc_usage_threshold; | |
| 68 | |
| 69 SensorInfo* _usage_sensor; | |
| 70 SensorInfo* _gc_usage_sensor; | |
| 71 | |
| 72 volatile instanceOop _memory_pool_obj; | |
| 73 | |
| 74 void add_manager(MemoryManager* mgr); | |
| 75 | |
| 76 public: | |
| 77 MemoryPool(const char* name, | |
| 78 PoolType type, | |
| 79 size_t init_size, | |
| 80 size_t max_size, | |
| 81 bool support_usage_threshold, | |
| 82 bool support_gc_threshold); | |
| 83 | |
| 84 const char* name() { return _name; } | |
| 85 bool is_heap() { return _type == Heap; } | |
| 86 bool is_non_heap() { return _type == NonHeap; } | |
| 87 size_t initial_size() const { return _initial_size; } | |
| 88 int num_memory_managers() const { return _num_managers; } | |
| 89 // max size could be changed | |
| 90 virtual size_t max_size() const { return _max_size; } | |
| 91 | |
| 92 bool is_pool(instanceHandle pool) { return (pool() == _memory_pool_obj); } | |
| 93 | |
| 94 bool available_for_allocation() { return _available_for_allocation; } | |
| 95 bool set_available_for_allocation(bool value) { | |
| 96 bool prev = _available_for_allocation; | |
| 97 _available_for_allocation = value; | |
| 98 return prev; | |
| 99 } | |
| 100 | |
| 101 MemoryManager* get_memory_manager(int index) { | |
| 102 assert(index >= 0 && index < _num_managers, "Invalid index"); | |
| 103 return _managers[index]; | |
| 104 } | |
| 105 | |
| 106 // Records current memory usage if it's a peak usage | |
| 107 void record_peak_memory_usage(); | |
| 108 | |
| 109 MemoryUsage get_peak_memory_usage() { | |
| 110 // check current memory usage first and then return peak usage | |
| 111 record_peak_memory_usage(); | |
| 112 return _peak_usage; | |
| 113 } | |
| 114 void reset_peak_memory_usage() { | |
| 115 _peak_usage = get_memory_usage(); | |
| 116 } | |
| 117 | |
| 118 ThresholdSupport* usage_threshold() { return _usage_threshold; } | |
| 119 ThresholdSupport* gc_usage_threshold() { return _gc_usage_threshold; } | |
| 120 | |
| 121 SensorInfo* usage_sensor() { return _usage_sensor; } | |
| 122 SensorInfo* gc_usage_sensor() { return _gc_usage_sensor; } | |
| 123 | |
| 124 void set_usage_sensor_obj(instanceHandle s); | |
| 125 void set_gc_usage_sensor_obj(instanceHandle s); | |
| 126 void set_last_collection_usage(MemoryUsage u) { _after_gc_usage = u; } | |
| 127 | |
| 128 virtual instanceOop get_memory_pool_instance(TRAPS); | |
| 129 virtual MemoryUsage get_memory_usage() = 0; | |
| 130 virtual size_t used_in_bytes() = 0; | |
| 131 virtual bool is_collected_pool() { return false; } | |
| 132 virtual MemoryUsage get_last_collection_usage() { return _after_gc_usage; } | |
| 133 | |
| 134 // GC support | |
| 135 void oops_do(OopClosure* f); | |
| 136 }; | |
| 137 | |
| 138 class CollectedMemoryPool : public MemoryPool { | |
| 139 public: | |
| 140 CollectedMemoryPool(const char* name, PoolType type, size_t init_size, size_t max_size, bool support_usage_threshold) : | |
| 141 MemoryPool(name, type, init_size, max_size, support_usage_threshold, true) {}; | |
| 142 bool is_collected_pool() { return true; } | |
| 143 }; | |
| 144 | |
| 145 class ContiguousSpacePool : public CollectedMemoryPool { | |
| 146 private: | |
| 147 ContiguousSpace* _space; | |
| 148 | |
| 149 public: | |
| 150 ContiguousSpacePool(ContiguousSpace* space, const char* name, PoolType type, size_t max_size, bool support_usage_threshold); | |
| 151 | |
| 152 ContiguousSpace* space() { return _space; } | |
| 153 MemoryUsage get_memory_usage(); | |
| 154 size_t used_in_bytes() { return space()->used(); } | |
| 155 }; | |
| 156 | |
| 157 class SurvivorContiguousSpacePool : public CollectedMemoryPool { | |
| 158 private: | |
| 159 DefNewGeneration* _gen; | |
| 160 | |
| 161 public: | |
| 162 SurvivorContiguousSpacePool(DefNewGeneration* gen, | |
| 163 const char* name, | |
| 164 PoolType type, | |
| 165 size_t max_size, | |
| 166 bool support_usage_threshold); | |
| 167 | |
| 168 MemoryUsage get_memory_usage(); | |
| 169 | |
| 170 size_t used_in_bytes() { | |
| 171 return _gen->from()->used(); | |
| 172 } | |
| 173 size_t committed_in_bytes() { | |
| 174 return _gen->from()->capacity(); | |
| 175 } | |
| 176 }; | |
| 177 | |
| 178 #ifndef SERIALGC | |
| 179 class CompactibleFreeListSpacePool : public CollectedMemoryPool { | |
| 180 private: | |
| 181 CompactibleFreeListSpace* _space; | |
| 182 public: | |
| 183 CompactibleFreeListSpacePool(CompactibleFreeListSpace* space, | |
| 184 const char* name, | |
| 185 PoolType type, | |
| 186 size_t max_size, | |
| 187 bool support_usage_threshold); | |
| 188 | |
| 189 MemoryUsage get_memory_usage(); | |
| 190 size_t used_in_bytes() { return _space->used(); } | |
| 191 }; | |
| 192 #endif // SERIALGC | |
| 193 | |
| 194 | |
| 195 class GenerationPool : public CollectedMemoryPool { | |
| 196 private: | |
| 197 Generation* _gen; | |
| 198 public: | |
| 199 GenerationPool(Generation* gen, const char* name, PoolType type, bool support_usage_threshold); | |
| 200 | |
| 201 MemoryUsage get_memory_usage(); | |
| 202 size_t used_in_bytes() { return _gen->used(); } | |
| 203 }; | |
| 204 | |
| 205 class CodeHeapPool: public MemoryPool { | |
| 206 private: | |
| 207 CodeHeap* _codeHeap; | |
| 208 public: | |
| 209 CodeHeapPool(CodeHeap* codeHeap, const char* name, bool support_usage_threshold); | |
| 210 MemoryUsage get_memory_usage(); | |
| 211 size_t used_in_bytes() { return _codeHeap->allocated_capacity(); } | |
| 212 }; |