Mercurial > hg > truffle

comparison src/share/vm/gc_implementation/g1/concurrentG1RefineThread.hpp @ 342:37f87013dfd8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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
parents
children 315a5d70b295
comparison
equal deleted inserted replaced
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 // 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
37 public:
38 virtual void run();
39
40 private:
41 ConcurrentG1Refine* _cg1r;
42 bool _started;
43 bool _in_progress;
44 volatile bool _restart;
45
46 COTracker _co_tracker;
47 double _interval_ms;
48
49 bool _do_traversal;
50
51 void decreaseInterval(int processing_time_ms) {
52 double min_interval_ms = (double) processing_time_ms;
53 _interval_ms = 0.8 * _interval_ms;
54 if (_interval_ms < min_interval_ms)
55 _interval_ms = min_interval_ms;
56 }
57 void increaseInterval(int processing_time_ms) {
58 double max_interval_ms = 9.0 * (double) processing_time_ms;
59 _interval_ms = 1.1 * _interval_ms;
60 if (max_interval_ms > 0 && _interval_ms > max_interval_ms)
61 _interval_ms = max_interval_ms;
62 }
63
64 void sleepBeforeNextCycle();
65
66 void traversalBasedRefinement();
67
68 void queueBasedRefinement();
69
70 // For use by G1CollectedHeap, which is a friend.
71 static SuspendibleThreadSet* sts() { return &_sts; }
72
73 public:
74 // Constructor
75 ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r);
76
77 // Printing
78 void print();
79
80 // Total virtual time so far.
81 double vtime_accum() { return _vtime_accum; }
82
83 ConcurrentG1Refine* cg1r() { return _cg1r; }
84
85
86 void set_started() { _started = true; }
87 void clear_started() { _started = false; }
88 bool started() { return _started; }
89
90 void set_in_progress() { _in_progress = true; }
91 void clear_in_progress() { _in_progress = false; }
92 bool in_progress() { return _in_progress; }
93
94 void set_do_traversal(bool b);
95 bool do_traversal() { return _do_traversal; }
96
97 void sample_young_list_rs_lengths();
98
99 // Yield for GC
100 void yield();
101
102 // shutdown
103 static void stop();
104 };