Mercurial > hg > graal-compiler
annotate src/share/vm/services/memoryPool.hpp @ 6981:8c413497f434
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author | zgu |
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date | Fri, 09 Nov 2012 22:22:53 -0800 |
parents | da91efe96a93 |
children | db9981fd3124 |
rev | line source |
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0 | 1 /* |
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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 |