1 /*
2 * Copyright (c) 2001, 2009, 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 // Forward Decl.
26 class ConcurrentG1Refine;
27
28 // The G1 Concurrent Refinement Thread (could be several in the future).
29
30 class ConcurrentG1RefineThread: public ConcurrentGCThread {
31 friend class VMStructs;
32 friend class G1CollectedHeap;
33
34 double _vtime_start; // Initial virtual time.
35 double _vtime_accum; // Initial virtual time.
36 int _worker_id;
37 int _worker_id_offset;
38
39 // The refinement threads collection is linked list. A predecessor can activate a successor
40 // when the number of the rset update buffer crosses a certain threshold. A successor
41 // would self-deactivate when the number of the buffers falls below the threshold.
42 bool _active;
43 ConcurrentG1RefineThread* _next;
44 Monitor* _monitor;
67 // Constructor
68 ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread* next,
69 int worker_id_offset, int worker_id);
70
71 void initialize();
72
73 // Printing
74 void print() const;
75 void print_on(outputStream* st) const;
76
77 // Total virtual time so far.
78 double vtime_accum() { return _vtime_accum; }
79
80 ConcurrentG1Refine* cg1r() { return _cg1r; }
81
82 // Yield for GC
83 void yield();
84 // shutdown
85 void stop();
86 };
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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 ConcurrentG1Refine;
32
33 // The G1 Concurrent Refinement Thread (could be several in the future).
34
35 class ConcurrentG1RefineThread: public ConcurrentGCThread {
36 friend class VMStructs;
37 friend class G1CollectedHeap;
38
39 double _vtime_start; // Initial virtual time.
40 double _vtime_accum; // Initial virtual time.
41 int _worker_id;
42 int _worker_id_offset;
43
44 // The refinement threads collection is linked list. A predecessor can activate a successor
45 // when the number of the rset update buffer crosses a certain threshold. A successor
46 // would self-deactivate when the number of the buffers falls below the threshold.
47 bool _active;
48 ConcurrentG1RefineThread* _next;
49 Monitor* _monitor;
72 // Constructor
73 ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread* next,
74 int worker_id_offset, int worker_id);
75
76 void initialize();
77
78 // Printing
79 void print() const;
80 void print_on(outputStream* st) const;
81
82 // Total virtual time so far.
83 double vtime_accum() { return _vtime_accum; }
84
85 ConcurrentG1Refine* cg1r() { return _cg1r; }
86
87 // Yield for GC
88 void yield();
89 // shutdown
90 void stop();
91 };
92
93 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP
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