Mercurial > hg > truffle
annotate src/share/vm/services/memoryPool.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | d2a62e0f25eb |
| children | db9981fd3124 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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2 * Copyright (c) 2003, 2012, 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_MEMORYPOOL_HPP |
| 26 #define SHARE_VM_SERVICES_MEMORYPOOL_HPP | |
| 27 | |
| 28 #include "gc_implementation/shared/mutableSpace.hpp" | |
| 29 #include "memory/defNewGeneration.hpp" | |
| 30 #include "memory/heap.hpp" | |
| 31 #include "memory/space.hpp" | |
| 32 #include "services/memoryUsage.hpp" | |
| 33 #ifndef SERIALGC | |
| 34 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
| 35 #endif | |
| 36 | |
| 0 | 37 // A memory pool represents the memory area that the VM manages. |
| 38 // The Java virtual machine has at least one memory pool | |
| 39 // and it may create or remove memory pools during execution. | |
| 40 // A memory pool can belong to the heap or the non-heap memory. | |
| 41 // A Java virtual machine may also have memory pools belonging to | |
| 42 // both heap and non-heap memory. | |
| 43 | |
| 44 // Forward declaration | |
| 45 class MemoryManager; | |
| 46 class SensorInfo; | |
| 47 class Generation; | |
| 48 class DefNewGeneration; | |
| 49 class ThresholdSupport; | |
| 50 | |
| 6197 | 51 class MemoryPool : public CHeapObj<mtInternal> { |
| 0 | 52 friend class MemoryManager; |
| 53 public: | |
| 54 enum PoolType { | |
| 55 Heap = 1, | |
| 56 NonHeap = 2 | |
| 57 }; | |
| 58 | |
| 59 private: | |
| 60 enum { | |
| 61 max_num_managers = 5 | |
| 62 }; | |
| 63 | |
| 64 // We could make some of the following as performance counters | |
| 65 // for external monitoring. | |
| 66 const char* _name; | |
| 67 PoolType _type; | |
| 68 size_t _initial_size; | |
| 69 size_t _max_size; | |
| 70 bool _available_for_allocation; // Default is true | |
| 71 MemoryManager* _managers[max_num_managers]; | |
| 72 int _num_managers; | |
| 73 MemoryUsage _peak_usage; // Peak memory usage | |
| 74 MemoryUsage _after_gc_usage; // After GC memory usage | |
| 75 | |
| 76 ThresholdSupport* _usage_threshold; | |
| 77 ThresholdSupport* _gc_usage_threshold; | |
| 78 | |
| 79 SensorInfo* _usage_sensor; | |
| 80 SensorInfo* _gc_usage_sensor; | |
| 81 | |
| 82 volatile instanceOop _memory_pool_obj; | |
| 83 | |
| 84 void add_manager(MemoryManager* mgr); | |
| 85 | |
| 86 public: | |
| 87 MemoryPool(const char* name, | |
| 88 PoolType type, | |
| 89 size_t init_size, | |
| 90 size_t max_size, | |
| 91 bool support_usage_threshold, | |
| 92 bool support_gc_threshold); | |
| 93 | |
| 94 const char* name() { return _name; } | |
| 95 bool is_heap() { return _type == Heap; } | |
| 96 bool is_non_heap() { return _type == NonHeap; } | |
| 97 size_t initial_size() const { return _initial_size; } | |
| 98 int num_memory_managers() const { return _num_managers; } | |
| 99 // max size could be changed | |
| 100 virtual size_t max_size() const { return _max_size; } | |
| 101 | |
| 102 bool is_pool(instanceHandle pool) { return (pool() == _memory_pool_obj); } | |
| 103 | |
| 104 bool available_for_allocation() { return _available_for_allocation; } | |
| 105 bool set_available_for_allocation(bool value) { | |
| 106 bool prev = _available_for_allocation; | |
| 107 _available_for_allocation = value; | |
| 108 return prev; | |
| 109 } | |
| 110 | |
| 111 MemoryManager* get_memory_manager(int index) { | |
| 112 assert(index >= 0 && index < _num_managers, "Invalid index"); | |
| 113 return _managers[index]; | |
| 114 } | |
| 115 | |
| 116 // Records current memory usage if it's a peak usage | |
| 117 void record_peak_memory_usage(); | |
| 118 | |
| 119 MemoryUsage get_peak_memory_usage() { | |
| 120 // check current memory usage first and then return peak usage | |
| 121 record_peak_memory_usage(); | |
| 122 return _peak_usage; | |
| 123 } | |
| 124 void reset_peak_memory_usage() { | |
| 125 _peak_usage = get_memory_usage(); | |
| 126 } | |
| 127 | |
| 128 ThresholdSupport* usage_threshold() { return _usage_threshold; } | |
| 129 ThresholdSupport* gc_usage_threshold() { return _gc_usage_threshold; } | |
| 130 | |
| 131 SensorInfo* usage_sensor() { return _usage_sensor; } | |
| 132 SensorInfo* gc_usage_sensor() { return _gc_usage_sensor; } | |
| 133 | |
| 134 void set_usage_sensor_obj(instanceHandle s); | |
| 135 void set_gc_usage_sensor_obj(instanceHandle s); | |
| 136 void set_last_collection_usage(MemoryUsage u) { _after_gc_usage = u; } | |
| 137 | |
| 138 virtual instanceOop get_memory_pool_instance(TRAPS); | |
| 139 virtual MemoryUsage get_memory_usage() = 0; | |
| 140 virtual size_t used_in_bytes() = 0; | |
| 141 virtual bool is_collected_pool() { return false; } | |
| 142 virtual MemoryUsage get_last_collection_usage() { return _after_gc_usage; } | |
| 143 | |
| 144 // GC support | |
| 145 void oops_do(OopClosure* f); | |
| 146 }; | |
| 147 | |
| 148 class CollectedMemoryPool : public MemoryPool { | |
| 149 public: | |
| 150 CollectedMemoryPool(const char* name, PoolType type, size_t init_size, size_t max_size, bool support_usage_threshold) : | |
| 151 MemoryPool(name, type, init_size, max_size, support_usage_threshold, true) {}; | |
| 152 bool is_collected_pool() { return true; } | |
| 153 }; | |
| 154 | |
| 155 class ContiguousSpacePool : public CollectedMemoryPool { | |
| 156 private: | |
| 157 ContiguousSpace* _space; | |
| 158 | |
| 159 public: | |
| 160 ContiguousSpacePool(ContiguousSpace* space, const char* name, PoolType type, size_t max_size, bool support_usage_threshold); | |
| 161 | |
| 162 ContiguousSpace* space() { return _space; } | |
| 163 MemoryUsage get_memory_usage(); | |
| 164 size_t used_in_bytes() { return space()->used(); } | |
| 165 }; | |
| 166 | |
| 167 class SurvivorContiguousSpacePool : public CollectedMemoryPool { | |
| 168 private: | |
| 169 DefNewGeneration* _gen; | |
| 170 | |
| 171 public: | |
| 172 SurvivorContiguousSpacePool(DefNewGeneration* gen, | |
| 173 const char* name, | |
| 174 PoolType type, | |
| 175 size_t max_size, | |
| 176 bool support_usage_threshold); | |
| 177 | |
| 178 MemoryUsage get_memory_usage(); | |
| 179 | |
| 180 size_t used_in_bytes() { | |
| 181 return _gen->from()->used(); | |
| 182 } | |
| 183 size_t committed_in_bytes() { | |
| 184 return _gen->from()->capacity(); | |
| 185 } | |
| 186 }; | |
| 187 | |
| 188 #ifndef SERIALGC | |
| 189 class CompactibleFreeListSpacePool : public CollectedMemoryPool { | |
| 190 private: | |
| 191 CompactibleFreeListSpace* _space; | |
| 192 public: | |
| 193 CompactibleFreeListSpacePool(CompactibleFreeListSpace* space, | |
| 194 const char* name, | |
| 195 PoolType type, | |
| 196 size_t max_size, | |
| 197 bool support_usage_threshold); | |
| 198 | |
| 199 MemoryUsage get_memory_usage(); | |
| 200 size_t used_in_bytes() { return _space->used(); } | |
| 201 }; | |
| 202 #endif // SERIALGC | |
| 203 | |
| 204 | |
| 205 class GenerationPool : public CollectedMemoryPool { | |
| 206 private: | |
| 207 Generation* _gen; | |
| 208 public: | |
| 209 GenerationPool(Generation* gen, const char* name, PoolType type, bool support_usage_threshold); | |
| 210 | |
| 211 MemoryUsage get_memory_usage(); | |
| 212 size_t used_in_bytes() { return _gen->used(); } | |
| 213 }; | |
| 214 | |
| 215 class CodeHeapPool: public MemoryPool { | |
| 216 private: | |
| 217 CodeHeap* _codeHeap; | |
| 218 public: | |
| 219 CodeHeapPool(CodeHeap* codeHeap, const char* name, bool support_usage_threshold); | |
| 220 MemoryUsage get_memory_usage(); | |
| 221 size_t used_in_bytes() { return _codeHeap->allocated_capacity(); } | |
| 222 }; | |
| 1972 | 223 |
| 224 #endif // SHARE_VM_SERVICES_MEMORYPOOL_HPP |