27
28 #include "gc_implementation/g1/g1AllocationContext.hpp"
29 #include "gc_implementation/shared/vmGCOperations.hpp"
30
31 // VM_operations for the G1 collector.
32 // VM_GC_Operation:
33 // - VM_CGC_Operation
34 // - VM_G1CollectFull
35 // - VM_G1OperationWithAllocRequest
36 // - VM_G1CollectForAllocation
37 // - VM_G1IncCollectionPause
38
39 class VM_G1OperationWithAllocRequest : public VM_CollectForAllocation {
40 protected:
41 bool _pause_succeeded;
42 AllocationContext_t _allocation_context;
43
44 public:
45 VM_G1OperationWithAllocRequest(uint gc_count_before,
46 size_t word_size,
47 GCCause::Cause gc_cause)
48 : VM_CollectForAllocation(word_size, gc_count_before, gc_cause),
49 _pause_succeeded(false) {}
50 bool pause_succeeded() { return _pause_succeeded; }
51 void set_allocation_context(AllocationContext_t context) { _allocation_context = context; }
52 AllocationContext_t allocation_context() { return _allocation_context; }
53 };
54
55 class VM_G1CollectFull: public VM_GC_Operation {
56 public:
57 VM_G1CollectFull(uint gc_count_before,
58 uint full_gc_count_before,
59 GCCause::Cause cause)
60 : VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { }
61 virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
62 virtual void doit();
63 virtual const char* name() const {
64 return "full garbage-first collection";
65 }
66 };
67
68 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest {
69 public:
70 VM_G1CollectForAllocation(uint gc_count_before,
71 size_t word_size);
72 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
73 virtual void doit();
74 virtual const char* name() const {
75 return "garbage-first collection to satisfy allocation";
76 }
77 };
78
79 class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest {
80 private:
81 bool _should_initiate_conc_mark;
82 bool _should_retry_gc;
83 double _target_pause_time_ms;
84 uint _old_marking_cycles_completed_before;
85 public:
86 VM_G1IncCollectionPause(uint gc_count_before,
87 size_t word_size,
88 bool should_initiate_conc_mark,
89 double target_pause_time_ms,
90 GCCause::Cause gc_cause);
91 virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
92 virtual bool doit_prologue();
93 virtual void doit();
94 virtual void doit_epilogue();
95 virtual const char* name() const {
96 return "garbage-first incremental collection pause";
97 }
98 bool should_retry_gc() const { return _should_retry_gc; }
99 };
100
101 // Concurrent GC stop-the-world operations such as remark and cleanup;
102 // consider sharing these with CMS's counterparts.
103 class VM_CGC_Operation: public VM_Operation {
104 VoidClosure* _cl;
105 const char* _printGCMessage;
106 bool _needs_pll;
107
108 protected:
109 // java.lang.ref.Reference support
110 void acquire_pending_list_lock();
|
27
28 #include "gc_implementation/g1/g1AllocationContext.hpp"
29 #include "gc_implementation/shared/vmGCOperations.hpp"
30
31 // VM_operations for the G1 collector.
32 // VM_GC_Operation:
33 // - VM_CGC_Operation
34 // - VM_G1CollectFull
35 // - VM_G1OperationWithAllocRequest
36 // - VM_G1CollectForAllocation
37 // - VM_G1IncCollectionPause
38
39 class VM_G1OperationWithAllocRequest : public VM_CollectForAllocation {
40 protected:
41 bool _pause_succeeded;
42 AllocationContext_t _allocation_context;
43
44 public:
45 VM_G1OperationWithAllocRequest(uint gc_count_before,
46 size_t word_size,
47 GCCause::Cause gc_cause,
48 uint gc_attempt)
49 : VM_CollectForAllocation(word_size, gc_count_before, gc_cause, gc_attempt),
50 _pause_succeeded(false) {}
51 bool pause_succeeded() { return _pause_succeeded; }
52 void set_allocation_context(AllocationContext_t context) { _allocation_context = context; }
53 AllocationContext_t allocation_context() { return _allocation_context; }
54 };
55
56 class VM_G1CollectFull: public VM_GC_Operation {
57 public:
58 VM_G1CollectFull(uint gc_count_before,
59 uint full_gc_count_before,
60 GCCause::Cause cause)
61 : VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { }
62 virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
63 virtual void doit();
64 virtual const char* name() const {
65 return "full garbage-first collection";
66 }
67 };
68
69 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest {
70 public:
71 VM_G1CollectForAllocation(uint gc_count_before,
72 size_t word_size,
73 uint gc_attempt);
74 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
75 virtual void doit();
76 virtual const char* name() const {
77 return "garbage-first collection to satisfy allocation";
78 }
79 };
80
81 class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest {
82 private:
83 bool _should_initiate_conc_mark;
84 bool _should_retry_gc;
85 double _target_pause_time_ms;
86 uint _old_marking_cycles_completed_before;
87 public:
88 VM_G1IncCollectionPause(uint gc_count_before,
89 size_t word_size,
90 bool should_initiate_conc_mark,
91 double target_pause_time_ms,
92 GCCause::Cause gc_cause,
93 uint gc_attempt = 0);
94 virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
95 virtual bool doit_prologue();
96 virtual void doit();
97 virtual void doit_epilogue();
98 virtual const char* name() const {
99 return "garbage-first incremental collection pause";
100 }
101 bool should_retry_gc() const { return _should_retry_gc; }
102 };
103
104 // Concurrent GC stop-the-world operations such as remark and cleanup;
105 // consider sharing these with CMS's counterparts.
106 class VM_CGC_Operation: public VM_Operation {
107 VoidClosure* _cl;
108 const char* _printGCMessage;
109 bool _needs_pll;
110
111 protected:
112 // java.lang.ref.Reference support
113 void acquire_pending_list_lock();
|