11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_GC_PARALLEL_PSCOMPACTIONMANAGER_HPP
26 #define SHARE_GC_PARALLEL_PSCOMPACTIONMANAGER_HPP
27
28 #include "gc/shared/taskqueue.hpp"
29 #include "memory/allocation.hpp"
30 #include "utilities/stack.hpp"
31
32 class MutableSpace;
33 class PSOldGen;
34 class ParCompactionManager;
35 class ObjectStartArray;
36 class ParallelCompactData;
37 class ParMarkBitMap;
38
39 class ParCompactionManager : public CHeapObj<mtGC> {
40 friend class ParallelTaskTerminator;
41 friend class ParMarkBitMap;
42 friend class PSParallelCompact;
43 friend class CompactionWithStealingTask;
44 friend class UpdateAndFillClosure;
45 friend class RefProcTaskExecutor;
46 friend class PCRefProcTask;
47 friend class MarkFromRootsTask;
48 friend class UpdateDensePrefixAndCompactionTask;
49
50 public:
60 };
61 // ------------------------ End don't putback if not needed
62
63 private:
64 // 32-bit: 4K * 8 = 32KiB; 64-bit: 8K * 16 = 128KiB
65 #define QUEUE_SIZE (1 << NOT_LP64(12) LP64_ONLY(13))
66 typedef OverflowTaskQueue<ObjArrayTask, mtGC, QUEUE_SIZE> ObjArrayTaskQueue;
67 typedef GenericTaskQueueSet<ObjArrayTaskQueue, mtGC> ObjArrayTaskQueueSet;
68 #undef QUEUE_SIZE
69
70 static ParCompactionManager** _manager_array;
71 static OopTaskQueueSet* _stack_array;
72 static ObjArrayTaskQueueSet* _objarray_queues;
73 static ObjectStartArray* _start_array;
74 static RegionTaskQueueSet* _region_array;
75 static PSOldGen* _old_gen;
76
77 private:
78 OverflowTaskQueue<oop, mtGC> _marking_stack;
79 ObjArrayTaskQueue _objarray_stack;
80
81 // Is there a way to reuse the _marking_stack for the
82 // saving empty regions? For now just create a different
83 // type of TaskQueue.
84 RegionTaskQueue _region_stack;
85
86 static ParMarkBitMap* _mark_bitmap;
87
88 Action _action;
89
90 HeapWord* _last_query_beg;
91 oop _last_query_obj;
92 size_t _last_query_ret;
93
94 static PSOldGen* old_gen() { return _old_gen; }
95 static ObjectStartArray* start_array() { return _start_array; }
96 static OopTaskQueueSet* stack_array() { return _stack_array; }
97
98 static void initialize(ParMarkBitMap* mbm);
99
100 protected:
101 // Array of tasks. Needed by the ParallelTaskTerminator.
102 static RegionTaskQueueSet* region_array() { return _region_array; }
103 OverflowTaskQueue<oop, mtGC>* marking_stack() { return &_marking_stack; }
104
105 // Pushes onto the marking stack. If the marking stack is full,
106 // pushes onto the overflow stack.
107 void stack_push(oop obj);
108 // Do not implement an equivalent stack_pop. Deal with the
109 // marking stack and overflow stack directly.
110
111 public:
112 void reset_bitmap_query_cache() {
113 _last_query_beg = NULL;
114 _last_query_obj = NULL;
115 _last_query_ret = 0;
116 }
117
118 Action action() { return _action; }
119 void set_action(Action v) { _action = v; }
120
121 // Bitmap query support, cache last query and result
122 HeapWord* last_query_begin() { return _last_query_beg; }
123 oop last_query_object() { return _last_query_obj; }
124 size_t last_query_return() { return _last_query_ret; }
125
126 void set_last_query_begin(HeapWord *new_beg) { _last_query_beg = new_beg; }
127 void set_last_query_object(oop new_obj) { _last_query_obj = new_obj; }
128 void set_last_query_return(size_t new_ret) { _last_query_ret = new_ret; }
129
130 static void reset_all_bitmap_query_caches();
131
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_GC_PARALLEL_PSCOMPACTIONMANAGER_HPP
26 #define SHARE_GC_PARALLEL_PSCOMPACTIONMANAGER_HPP
27
28 #include "gc/shared/taskqueue.hpp"
29 #include "memory/allocation.hpp"
30 #include "utilities/stack.hpp"
31 #include "psParallelCompact.hpp"
32
33 class MutableSpace;
34 class PSOldGen;
35 class ParCompactionManager;
36 class ObjectStartArray;
37 class ParallelCompactData;
38 class ParMarkBitMap;
39
40 class ParCompactionManager : public CHeapObj<mtGC> {
41 friend class ParallelTaskTerminator;
42 friend class ParMarkBitMap;
43 friend class PSParallelCompact;
44 friend class CompactionWithStealingTask;
45 friend class UpdateAndFillClosure;
46 friend class RefProcTaskExecutor;
47 friend class PCRefProcTask;
48 friend class MarkFromRootsTask;
49 friend class UpdateDensePrefixAndCompactionTask;
50
51 public:
61 };
62 // ------------------------ End don't putback if not needed
63
64 private:
65 // 32-bit: 4K * 8 = 32KiB; 64-bit: 8K * 16 = 128KiB
66 #define QUEUE_SIZE (1 << NOT_LP64(12) LP64_ONLY(13))
67 typedef OverflowTaskQueue<ObjArrayTask, mtGC, QUEUE_SIZE> ObjArrayTaskQueue;
68 typedef GenericTaskQueueSet<ObjArrayTaskQueue, mtGC> ObjArrayTaskQueueSet;
69 #undef QUEUE_SIZE
70
71 static ParCompactionManager** _manager_array;
72 static OopTaskQueueSet* _stack_array;
73 static ObjArrayTaskQueueSet* _objarray_queues;
74 static ObjectStartArray* _start_array;
75 static RegionTaskQueueSet* _region_array;
76 static PSOldGen* _old_gen;
77
78 private:
79 OverflowTaskQueue<oop, mtGC> _marking_stack;
80 ObjArrayTaskQueue _objarray_stack;
81 size_t _shadow_record;
82
83 // Is there a way to reuse the _marking_stack for the
84 // saving empty regions? For now just create a different
85 // type of TaskQueue.
86 RegionTaskQueue _region_stack;
87
88 static ParMarkBitMap* _mark_bitmap;
89
90 // The shadow region array, we use it in a LIFO fashion, so
91 // that we can reuse shadow regions for better data locality
92 // and utilization
93 static GrowableArray<size_t>* _shadow_region_array;
94
95 // This Monitor provides mutual exclusive access of _shadow_region_array
96 static Monitor* _shadow_region_monitor;
97
98 Action _action;
99
100 HeapWord* _last_query_beg;
101 oop _last_query_obj;
102 size_t _last_query_ret;
103
104 static PSOldGen* old_gen() { return _old_gen; }
105 static ObjectStartArray* start_array() { return _start_array; }
106 static OopTaskQueueSet* stack_array() { return _stack_array; }
107
108 static void initialize(ParMarkBitMap* mbm);
109
110 protected:
111 // Array of tasks. Needed by the ParallelTaskTerminator.
112 static RegionTaskQueueSet* region_array() { return _region_array; }
113 OverflowTaskQueue<oop, mtGC>* marking_stack() { return &_marking_stack; }
114
115 // Pushes onto the marking stack. If the marking stack is full,
116 // pushes onto the overflow stack.
117 void stack_push(oop obj);
118 // Do not implement an equivalent stack_pop. Deal with the
119 // marking stack and overflow stack directly.
120
121 public:
122 static size_t acquire_shadow_region(PSParallelCompact::RegionData* region_ptr);
123 static void release_shadow_region(size_t shadow_region);
124 static void enqueue_shadow_region(size_t shadow_region);
125 static void dequeue_shadow_region();
126 inline size_t shadow_record() { return _shadow_record; }
127 inline void set_shadow_record(size_t record) { _shadow_record = record; }
128 inline size_t next_shadow_record(size_t workers) { _shadow_record += workers; return shadow_record(); }
129
130 void reset_bitmap_query_cache() {
131 _last_query_beg = NULL;
132 _last_query_obj = NULL;
133 _last_query_ret = 0;
134 }
135
136 Action action() { return _action; }
137 void set_action(Action v) { _action = v; }
138
139 // Bitmap query support, cache last query and result
140 HeapWord* last_query_begin() { return _last_query_beg; }
141 oop last_query_object() { return _last_query_obj; }
142 size_t last_query_return() { return _last_query_ret; }
143
144 void set_last_query_begin(HeapWord *new_beg) { _last_query_beg = new_beg; }
145 void set_last_query_object(oop new_obj) { _last_query_obj = new_obj; }
146 void set_last_query_return(size_t new_ret) { _last_query_ret = new_ret; }
147
148 static void reset_all_bitmap_query_caches();
149
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