1 /*
2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP
27
28 #include "gc_implementation/shared/concurrentGCThread.hpp"
29
30 // Forward Decl.
31 class CardTableEntryClosure;
32 class ConcurrentG1Refine;
33
34 // The G1 Concurrent Refinement Thread (could be several in the future).
35
36 class ConcurrentG1RefineThread: public ConcurrentGCThread {
37 friend class VMStructs;
38 friend class G1CollectedHeap;
39
40 double _vtime_start; // Initial virtual time.
41 double _vtime_accum; // Initial virtual time.
42 uint _worker_id;
43 uint _worker_id_offset;
44
45 // The refinement threads collection is linked list. A predecessor can activate a successor
46 // when the number of the rset update buffer crosses a certain threshold. A successor
47 // would self-deactivate when the number of the buffers falls below the threshold.
48 bool _active;
69 void deactivate();
70
71 public:
72 virtual void run();
73 // Constructor
74 ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread* next,
75 CardTableEntryClosure* refine_closure,
76 uint worker_id_offset, uint worker_id);
77
78 void initialize();
79
80 // Total virtual time so far.
81 double vtime_accum() { return _vtime_accum; }
82
83 ConcurrentG1Refine* cg1r() { return _cg1r; }
84
85 // shutdown
86 void stop();
87 };
88
89 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP
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1 /*
2 * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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_VM_GC_G1_CONCURRENTG1REFINETHREAD_HPP
26 #define SHARE_VM_GC_G1_CONCURRENTG1REFINETHREAD_HPP
27
28 #include "gc/shared/concurrentGCThread.hpp"
29
30 // Forward Decl.
31 class CardTableEntryClosure;
32 class ConcurrentG1Refine;
33
34 // The G1 Concurrent Refinement Thread (could be several in the future).
35
36 class ConcurrentG1RefineThread: public ConcurrentGCThread {
37 friend class VMStructs;
38 friend class G1CollectedHeap;
39
40 double _vtime_start; // Initial virtual time.
41 double _vtime_accum; // Initial virtual time.
42 uint _worker_id;
43 uint _worker_id_offset;
44
45 // The refinement threads collection is linked list. A predecessor can activate a successor
46 // when the number of the rset update buffer crosses a certain threshold. A successor
47 // would self-deactivate when the number of the buffers falls below the threshold.
48 bool _active;
69 void deactivate();
70
71 public:
72 virtual void run();
73 // Constructor
74 ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread* next,
75 CardTableEntryClosure* refine_closure,
76 uint worker_id_offset, uint worker_id);
77
78 void initialize();
79
80 // Total virtual time so far.
81 double vtime_accum() { return _vtime_accum; }
82
83 ConcurrentG1Refine* cg1r() { return _cg1r; }
84
85 // shutdown
86 void stop();
87 };
88
89 #endif // SHARE_VM_GC_G1_CONCURRENTG1REFINETHREAD_HPP
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