psMemoryPool.hpp revision 8413:92457dfb91bd 
1/*
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24
25#ifndef SHARE_VM_SERVICES_PSMEMORYPOOL_HPP
26#define SHARE_VM_SERVICES_PSMEMORYPOOL_HPP
27
28#include "utilities/macros.hpp"
29#if INCLUDE_ALL_GCS
30#include "gc/parallel/mutableSpace.hpp"
31#include "gc/parallel/psOldGen.hpp"
32#include "gc/parallel/psYoungGen.hpp"
33#include "gc/serial/defNewGeneration.hpp"
34#include "gc/shared/space.hpp"
35#include "memory/heap.hpp"
36#include "services/memoryPool.hpp"
37#include "services/memoryUsage.hpp"
38#endif // INCLUDE_ALL_GCS
39
40class PSGenerationPool : public CollectedMemoryPool {
41private:
42  PSOldGen* _gen;
43
44public:
45  PSGenerationPool(PSOldGen* pool, const char* name, PoolType type, bool support_usage_threshold);
46
47  MemoryUsage get_memory_usage();
48  size_t used_in_bytes()              { return _gen->used_in_bytes(); }
49  size_t max_size() const             { return _gen->reserved().byte_size(); }
50};
51
52class EdenMutableSpacePool : public CollectedMemoryPool {
53private:
54  PSYoungGen*   _gen;
55  MutableSpace* _space;
56
57public:
58  EdenMutableSpacePool(PSYoungGen* gen,
59                       MutableSpace* space,
60                       const char* name,
61                       PoolType type,
62                       bool support_usage_threshold);
63
64  MutableSpace* space()                     { return _space; }
65  MemoryUsage get_memory_usage();
66  size_t used_in_bytes()                    { return space()->used_in_bytes(); }
67  size_t max_size() const {
68    // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces
69    return _gen->max_size() - _gen->from_space()->capacity_in_bytes() - _gen->to_space()->capacity_in_bytes();
70  }
71};
72
73class SurvivorMutableSpacePool : public CollectedMemoryPool {
74private:
75  PSYoungGen*   _gen;
76
77public:
78  SurvivorMutableSpacePool(PSYoungGen* gen,
79                           const char* name,
80                           PoolType type,
81                           bool support_usage_threshold);
82
83  MemoryUsage get_memory_usage();
84
85  size_t used_in_bytes() {
86    return _gen->from_space()->used_in_bytes();
87  }
88  size_t committed_in_bytes() {
89    return _gen->from_space()->capacity_in_bytes();
90  }
91  size_t max_size() const {
92    // Return current committed size of the from-space
93    return _gen->from_space()->capacity_in_bytes();
94  }
95};
96
97#endif // SHARE_VM_SERVICES_PSMEMORYPOOL_HPP
98