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comparison src/share/vm/gc_implementation/g1/concurrentMarkThread.hpp @ 342:37f87013dfd8

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6711316: Open source the Garbage-First garbage collector Summary: First mercurial integration of the code for the Garbage-First garbage collector. Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author ysr
date Thu, 05 Jun 2008 15:57:56 -0700
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children 315a5d70b295
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189:0b27f3512f9e 342:37f87013dfd8
1 /*
2 * Copyright 2001-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 // The Concurrent Mark GC Thread (could be several in the future).
26 // This is copied from the Concurrent Mark Sweep GC Thread
27 // Still under construction.
28
29 class ConcurrentMark;
30
31 class ConcurrentMarkThread: public ConcurrentGCThread {
32 friend class VMStructs;
33
34 double _vtime_start; // Initial virtual time.
35 double _vtime_accum; // Accumulated virtual time.
36
37 double _vtime_mark_accum;
38 double _vtime_count_accum;
39
40 public:
41 virtual void run();
42
43 private:
44 ConcurrentMark* _cm;
45 bool _started;
46 bool _in_progress;
47
48 void sleepBeforeNextCycle();
49
50 static SurrogateLockerThread* _slt;
51
52 public:
53 // Constructor
54 ConcurrentMarkThread(ConcurrentMark* cm);
55
56 static void makeSurrogateLockerThread(TRAPS);
57 static SurrogateLockerThread* slt() { return _slt; }
58
59 // Printing
60 void print();
61
62 // Total virtual time so far.
63 double vtime_accum();
64 // Marking virtual time so far
65 double vtime_mark_accum();
66 // Counting virtual time so far.
67 double vtime_count_accum() { return _vtime_count_accum; }
68
69 ConcurrentMark* cm() { return _cm; }
70
71 void set_started() { _started = true; }
72 void clear_started() { _started = false; }
73 bool started() { return _started; }
74
75 void set_in_progress() { _in_progress = true; }
76 void clear_in_progress() { _in_progress = false; }
77 bool in_progress() { return _in_progress; }
78
79 // Yield for GC
80 void yield();
81
82 // shutdown
83 static void stop();
84 };