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annotate src/share/vm/gc_implementation/g1/concurrentG1RefineThread.hpp @ 3759:cfcf2ba8f3eb
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author | never |
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date | Wed, 15 Jun 2011 10:20:03 -0700 |
parents | f95d63e2154a |
children | 8847586c9037 |
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342 | 1 /* |
1972 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
342 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
342 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
342 | 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. | |
794 | 41 int _worker_id; |
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42 int _worker_id_offset; |
342 | 43 |
794 | 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; | |
1111 | 48 ConcurrentG1RefineThread* _next; |
49 Monitor* _monitor; | |
50 ConcurrentG1Refine* _cg1r; | |
342 | 51 |
1111 | 52 int _thread_threshold_step; |
53 // This thread activation threshold | |
54 int _threshold; | |
55 // This thread deactivation threshold | |
56 int _deactivation_threshold; | |
342 | 57 |
1111 | 58 void sample_young_list_rs_lengths(); |
59 void run_young_rs_sampling(); | |
60 void wait_for_completed_buffers(); | |
61 | |
62 void set_active(bool x) { _active = x; } | |
63 bool is_active(); | |
64 void activate(); | |
65 void deactivate(); | |
342 | 66 |
67 // For use by G1CollectedHeap, which is a friend. | |
68 static SuspendibleThreadSet* sts() { return &_sts; } | |
69 | |
1111 | 70 public: |
71 virtual void run(); | |
342 | 72 // Constructor |
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73 ConcurrentG1RefineThread(ConcurrentG1Refine* cg1r, ConcurrentG1RefineThread* next, |
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74 int worker_id_offset, int worker_id); |
342 | 75 |
1111 | 76 void initialize(); |
77 | |
342 | 78 // Printing |
1019 | 79 void print() const; |
80 void print_on(outputStream* st) const; | |
342 | 81 |
82 // Total virtual time so far. | |
83 double vtime_accum() { return _vtime_accum; } | |
84 | |
1111 | 85 ConcurrentG1Refine* cg1r() { return _cg1r; } |
342 | 86 |
87 // Yield for GC | |
1111 | 88 void yield(); |
342 | 89 // shutdown |
794 | 90 void stop(); |
342 | 91 }; |
1972 | 92 |
93 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP |