67 virtual bool should_enqueue_buffer();
68
69 #ifndef PRODUCT
70 // Helpful for debugging
71 void print(const char* name);
72 static void print(const char* name, void** buf, size_t index, size_t sz);
73 #endif // PRODUCT
74
75 void verify_oops_in_buffer() NOT_DEBUG_RETURN;
76 };
77
78 class SATBMarkQueueSet: public PtrQueueSet {
79 ObjectClosure* _closure;
80 ObjectClosure** _par_closures; // One per ParGCThread.
81
82 ObjPtrQueue _shared_satb_queue;
83
84 // Utility function to support sequential and parallel versions. If
85 // "par" is true, then "worker" is the par thread id; if "false", worker
86 // is ignored.
87 bool apply_closure_to_completed_buffer_work(bool par, int worker);
88
89 #ifdef ASSERT
90 void dump_active_values(JavaThread* first, bool expected_active);
91 #endif // ASSERT
92
93 public:
94 SATBMarkQueueSet();
95
96 void initialize(Monitor* cbl_mon, Mutex* fl_lock,
97 int process_completed_threshold,
98 Mutex* lock);
99
100 static void handle_zero_index_for_thread(JavaThread* t);
101
102 // Apply "set_active(b)" to all Java threads' SATB queues. It should be
103 // called only with the world stopped. The method will assert that the
104 // SATB queues of all threads it visits, as well as the SATB queue
105 // set itself, has an active value same as expected_active.
106 void set_active_all_threads(bool b, bool expected_active);
107
108 // Filter all the currently-active SATB buffers.
109 void filter_thread_buffers();
110
111 // Register "blk" as "the closure" for all queues. Only one such closure
112 // is allowed. The "apply_closure_to_completed_buffer" method will apply
113 // this closure to a completed buffer, and "iterate_closure_all_threads"
114 // applies it to partially-filled buffers (the latter should only be done
115 // with the world stopped).
116 void set_closure(ObjectClosure* closure);
117 // Set the parallel closures: pointer is an array of pointers to
118 // closures, one for each parallel GC thread.
119 void set_par_closure(int i, ObjectClosure* closure);
120
121 // Apply the registered closure to all entries on each
122 // currently-active buffer and then empty the buffer. It should only
123 // be called serially and at a safepoint.
124 void iterate_closure_all_threads();
125 // Parallel version of the above.
126 void par_iterate_closure_all_threads(int worker);
127
128 // If there exists some completed buffer, pop it, then apply the
129 // registered closure to all its elements, and return true. If no
130 // completed buffers exist, return false.
131 bool apply_closure_to_completed_buffer() {
132 return apply_closure_to_completed_buffer_work(false, 0);
133 }
134 // Parallel version of the above.
135 bool par_apply_closure_to_completed_buffer(int worker) {
136 return apply_closure_to_completed_buffer_work(true, worker);
137 }
138
139 // Apply the given closure on enqueued and currently-active buffers
140 // respectively. Both methods are read-only, i.e., they do not
141 // modify any of the buffers.
142 void iterate_completed_buffers_read_only(ObjectClosure* cl);
143 void iterate_thread_buffers_read_only(ObjectClosure* cl);
144
145 #ifndef PRODUCT
146 // Helpful for debugging
147 void print_all(const char* msg);
148 #endif // PRODUCT
149
150 ObjPtrQueue* shared_satb_queue() { return &_shared_satb_queue; }
151
152 // If a marking is being abandoned, reset any unprocessed log buffers.
153 void abandon_partial_marking();
154 };
155
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67 virtual bool should_enqueue_buffer();
68
69 #ifndef PRODUCT
70 // Helpful for debugging
71 void print(const char* name);
72 static void print(const char* name, void** buf, size_t index, size_t sz);
73 #endif // PRODUCT
74
75 void verify_oops_in_buffer() NOT_DEBUG_RETURN;
76 };
77
78 class SATBMarkQueueSet: public PtrQueueSet {
79 ObjectClosure* _closure;
80 ObjectClosure** _par_closures; // One per ParGCThread.
81
82 ObjPtrQueue _shared_satb_queue;
83
84 // Utility function to support sequential and parallel versions. If
85 // "par" is true, then "worker" is the par thread id; if "false", worker
86 // is ignored.
87 bool apply_closure_to_completed_buffer_work(bool par, uint worker);
88
89 #ifdef ASSERT
90 void dump_active_values(JavaThread* first, bool expected_active);
91 #endif // ASSERT
92
93 public:
94 SATBMarkQueueSet();
95
96 void initialize(Monitor* cbl_mon, Mutex* fl_lock,
97 int process_completed_threshold,
98 Mutex* lock);
99
100 static void handle_zero_index_for_thread(JavaThread* t);
101
102 // Apply "set_active(b)" to all Java threads' SATB queues. It should be
103 // called only with the world stopped. The method will assert that the
104 // SATB queues of all threads it visits, as well as the SATB queue
105 // set itself, has an active value same as expected_active.
106 void set_active_all_threads(bool b, bool expected_active);
107
108 // Filter all the currently-active SATB buffers.
109 void filter_thread_buffers();
110
111 // Register "blk" as "the closure" for all queues. Only one such closure
112 // is allowed. The "apply_closure_to_completed_buffer" method will apply
113 // this closure to a completed buffer, and "iterate_closure_all_threads"
114 // applies it to partially-filled buffers (the latter should only be done
115 // with the world stopped).
116 void set_closure(ObjectClosure* closure);
117 // Set the parallel closures: pointer is an array of pointers to
118 // closures, one for each parallel GC thread.
119 void set_par_closure(int i, ObjectClosure* closure);
120
121 // Apply the registered closure to all entries on each
122 // currently-active buffer and then empty the buffer. It should only
123 // be called serially and at a safepoint.
124 void iterate_closure_all_threads();
125 // Parallel version of the above.
126 void par_iterate_closure_all_threads(uint worker);
127
128 // If there exists some completed buffer, pop it, then apply the
129 // registered closure to all its elements, and return true. If no
130 // completed buffers exist, return false.
131 bool apply_closure_to_completed_buffer() {
132 return apply_closure_to_completed_buffer_work(false, 0);
133 }
134 // Parallel version of the above.
135 bool par_apply_closure_to_completed_buffer(uint worker) {
136 return apply_closure_to_completed_buffer_work(true, worker);
137 }
138
139 // Apply the given closure on enqueued and currently-active buffers
140 // respectively. Both methods are read-only, i.e., they do not
141 // modify any of the buffers.
142 void iterate_completed_buffers_read_only(ObjectClosure* cl);
143 void iterate_thread_buffers_read_only(ObjectClosure* cl);
144
145 #ifndef PRODUCT
146 // Helpful for debugging
147 void print_all(const char* msg);
148 #endif // PRODUCT
149
150 ObjPtrQueue* shared_satb_queue() { return &_shared_satb_queue; }
151
152 // If a marking is being abandoned, reset any unprocessed log buffers.
153 void abandon_partial_marking();
154 };
155
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