psMemoryPool.hpp revision 3602:da91efe96a93 
1/*
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24
25#ifndef SHARE_VM_SERVICES_PSMEMORYPOOL_HPP
26#define SHARE_VM_SERVICES_PSMEMORYPOOL_HPP
27
28#ifndef SERIALGC
29#include "gc_implementation/parallelScavenge/psOldGen.hpp"
30#include "gc_implementation/parallelScavenge/psYoungGen.hpp"
31#include "gc_implementation/shared/mutableSpace.hpp"
32#include "memory/defNewGeneration.hpp"
33#include "memory/heap.hpp"
34#include "memory/space.hpp"
35#include "services/memoryPool.hpp"
36#include "services/memoryUsage.hpp"
37#endif
38
39class PSGenerationPool : public CollectedMemoryPool {
40private:
41  PSOldGen* _gen;
42
43public:
44  PSGenerationPool(PSOldGen* pool, const char* name, PoolType type, bool support_usage_threshold);
45
46  MemoryUsage get_memory_usage();
47  size_t used_in_bytes()              { return _gen->used_in_bytes(); }
48  size_t max_size() const             { return _gen->reserved().byte_size(); }
49};
50
51class EdenMutableSpacePool : public CollectedMemoryPool {
52private:
53  PSYoungGen*   _gen;
54  MutableSpace* _space;
55
56public:
57  EdenMutableSpacePool(PSYoungGen* gen,
58                       MutableSpace* space,
59                       const char* name,
60                       PoolType type,
61                       bool support_usage_threshold);
62
63  MutableSpace* space()                     { return _space; }
64  MemoryUsage get_memory_usage();
65  size_t used_in_bytes()                    { return space()->used_in_bytes(); }
66  size_t max_size() const {
67    // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces
68    return _gen->max_size() - _gen->from_space()->capacity_in_bytes() - _gen->to_space()->capacity_in_bytes();
69  }
70};
71
72class SurvivorMutableSpacePool : public CollectedMemoryPool {
73private:
74  PSYoungGen*   _gen;
75
76public:
77  SurvivorMutableSpacePool(PSYoungGen* gen,
78                           const char* name,
79                           PoolType type,
80                           bool support_usage_threshold);
81
82  MemoryUsage get_memory_usage();
83
84  size_t used_in_bytes() {
85    return _gen->from_space()->used_in_bytes();
86  }
87  size_t committed_in_bytes() {
88    return _gen->from_space()->capacity_in_bytes();
89  }
90  size_t max_size() const {
91    // Return current committed size of the from-space
92    return _gen->from_space()->capacity_in_bytes();
93  }
94};
95
96#endif // SHARE_VM_SERVICES_PSMEMORYPOOL_HPP
97