47 // we'll have to wait for the concurrent marking thread to finish
48 // what it is doing. In this case we will postpone the marking cycle
49 // initiation decision for the next pause. When we eventually decide
50 // to start a cycle, we will set _in_initial_mark_gc which
51 // will stay true until the end of the initial-mark pause doing the
52 // initial-mark work.
53 volatile bool _in_initial_mark_gc;
54
55 // At the end of a pause we check the heap occupancy and we decide
56 // whether we will start a marking cycle during the next pause. If
57 // we decide that we want to do that, set this parameter. This parameter will
58 // stay set until the beginning of a subsequent pause (not necessarily
59 // the next one) when we decide that we will indeed start a marking cycle and
60 // do the initial-mark work.
61 volatile bool _initiate_conc_mark_if_possible;
62
63 // Marking or rebuilding remembered set work is in progress. Set from the end
64 // of the initial mark pause to the end of the Cleanup pause.
65 bool _mark_or_rebuild_in_progress;
66
67 // Set during a full gc pause.
68 bool _in_full_gc;
69
70 public:
71 G1CollectorState() :
72 _in_young_only_phase(true),
73 _in_young_gc_before_mixed(false),
74
75 _in_initial_mark_gc(false),
76 _initiate_conc_mark_if_possible(false),
77
78 _mark_or_rebuild_in_progress(false),
79 _in_full_gc(false) { }
80
81 // Phase setters
82 void set_in_young_only_phase(bool v) { _in_young_only_phase = v; }
83
84 // Pause setters
85 void set_in_young_gc_before_mixed(bool v) { _in_young_gc_before_mixed = v; }
86 void set_in_initial_mark_gc(bool v) { _in_initial_mark_gc = v; }
87 void set_in_full_gc(bool v) { _in_full_gc = v; }
88
89 void set_initiate_conc_mark_if_possible(bool v) { _initiate_conc_mark_if_possible = v; }
90
91 void set_mark_or_rebuild_in_progress(bool v) { _mark_or_rebuild_in_progress = v; }
92
93 // Phase getters
94 bool in_young_only_phase() const { return _in_young_only_phase && !_in_full_gc; }
95 bool in_mixed_phase() const { return !in_young_only_phase() && !_in_full_gc; }
96
97 // Specific pauses
98 bool in_young_gc_before_mixed() const { return _in_young_gc_before_mixed; }
99 bool in_full_gc() const { return _in_full_gc; }
100 bool in_initial_mark_gc() const { return _in_initial_mark_gc; }
101
102 bool initiate_conc_mark_if_possible() const { return _initiate_conc_mark_if_possible; }
103
104 bool mark_or_rebuild_in_progress() const { return _mark_or_rebuild_in_progress; }
105
106 G1YCType yc_type() const {
107 if (in_initial_mark_gc()) {
108 return InitialMark;
109 } else if (mark_or_rebuild_in_progress()) {
110 return DuringMarkOrRebuild;
111 } else if (in_young_only_phase()) {
112 return Normal;
113 } else {
114 return Mixed;
115 }
116 }
117 };
118
119 #endif // SHARE_VM_GC_G1_G1COLLECTORSTATE_HPP
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47 // we'll have to wait for the concurrent marking thread to finish
48 // what it is doing. In this case we will postpone the marking cycle
49 // initiation decision for the next pause. When we eventually decide
50 // to start a cycle, we will set _in_initial_mark_gc which
51 // will stay true until the end of the initial-mark pause doing the
52 // initial-mark work.
53 volatile bool _in_initial_mark_gc;
54
55 // At the end of a pause we check the heap occupancy and we decide
56 // whether we will start a marking cycle during the next pause. If
57 // we decide that we want to do that, set this parameter. This parameter will
58 // stay set until the beginning of a subsequent pause (not necessarily
59 // the next one) when we decide that we will indeed start a marking cycle and
60 // do the initial-mark work.
61 volatile bool _initiate_conc_mark_if_possible;
62
63 // Marking or rebuilding remembered set work is in progress. Set from the end
64 // of the initial mark pause to the end of the Cleanup pause.
65 bool _mark_or_rebuild_in_progress;
66
67 // The next bitmap is currently being cleared or about to be cleared. TAMS and bitmap
68 // may be out of sync.
69 bool _clearing_next_bitmap;
70
71 // Set during a full gc pause.
72 bool _in_full_gc;
73
74 public:
75 G1CollectorState() :
76 _in_young_only_phase(true),
77 _in_young_gc_before_mixed(false),
78
79 _in_initial_mark_gc(false),
80 _initiate_conc_mark_if_possible(false),
81
82 _mark_or_rebuild_in_progress(false),
83 _clearing_next_bitmap(false),
84 _in_full_gc(false) { }
85
86 // Phase setters
87 void set_in_young_only_phase(bool v) { _in_young_only_phase = v; }
88
89 // Pause setters
90 void set_in_young_gc_before_mixed(bool v) { _in_young_gc_before_mixed = v; }
91 void set_in_initial_mark_gc(bool v) { _in_initial_mark_gc = v; }
92 void set_in_full_gc(bool v) { _in_full_gc = v; }
93
94 void set_initiate_conc_mark_if_possible(bool v) { _initiate_conc_mark_if_possible = v; }
95
96 void set_mark_or_rebuild_in_progress(bool v) { _mark_or_rebuild_in_progress = v; }
97 void set_clearing_next_bitmap(bool v) { _clearing_next_bitmap = v; }
98
99 // Phase getters
100 bool in_young_only_phase() const { return _in_young_only_phase && !_in_full_gc; }
101 bool in_mixed_phase() const { return !in_young_only_phase() && !_in_full_gc; }
102
103 // Specific pauses
104 bool in_young_gc_before_mixed() const { return _in_young_gc_before_mixed; }
105 bool in_full_gc() const { return _in_full_gc; }
106 bool in_initial_mark_gc() const { return _in_initial_mark_gc; }
107
108 bool initiate_conc_mark_if_possible() const { return _initiate_conc_mark_if_possible; }
109
110 bool mark_or_rebuild_in_progress() const { return _mark_or_rebuild_in_progress; }
111 bool clearing_next_bitmap() const { return _clearing_next_bitmap; }
112
113 G1YCType yc_type() const {
114 if (in_initial_mark_gc()) {
115 return InitialMark;
116 } else if (mark_or_rebuild_in_progress()) {
117 return DuringMarkOrRebuild;
118 } else if (in_young_only_phase()) {
119 return Normal;
120 } else {
121 return Mixed;
122 }
123 }
124 };
125
126 #endif // SHARE_VM_GC_G1_G1COLLECTORSTATE_HPP
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