Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/gc_implementation/g1/concurrentMarkThread.hpp@15c5903cf9e1 (annotated)
src/share/vm/gc_implementation/g1/concurrentMarkThread.hpp
Mon, 03 Aug 2009 12:59:30 -0700
- author
- johnc
- date
- Mon, 03 Aug 2009 12:59:30 -0700
- changeset 1324
- 15c5903cf9e1
- parent 1279
- bd02caa94611
- child 1454
- 035d2e036a9b
- permissions
- -rw-r--r--
6865703: G1: Parallelize hot card cache cleanup
Summary: Have the GC worker threads clear the hot card cache in parallel by having each worker thread claim a chunk of the card cache and process the cards in that chunk. The size of the chunks that each thread will claim is determined at VM initialization from the size of the card cache and the number of worker threads.
Reviewed-by: jmasa, tonyp
| ysr@777 | 1 | /* |
| xdono@1279 | 2 | * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved. |
| ysr@777 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| ysr@777 | 4 | * |
| ysr@777 | 5 | * This code is free software; you can redistribute it and/or modify it |
| ysr@777 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| ysr@777 | 7 | * published by the Free Software Foundation. |
| ysr@777 | 8 | * |
| ysr@777 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| ysr@777 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| ysr@777 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| ysr@777 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| ysr@777 | 13 | * accompanied this code). |
| ysr@777 | 14 | * |
| ysr@777 | 15 | * You should have received a copy of the GNU General Public License version |
| ysr@777 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| ysr@777 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| ysr@777 | 18 | * |
| ysr@777 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| ysr@777 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| ysr@777 | 21 | * have any questions. |
| ysr@777 | 22 | * |
| ysr@777 | 23 | */ |
| ysr@777 | 24 | |
| ysr@777 | 25 | // The Concurrent Mark GC Thread (could be several in the future). |
| ysr@777 | 26 | // This is copied from the Concurrent Mark Sweep GC Thread |
| ysr@777 | 27 | // Still under construction. |
| ysr@777 | 28 | |
| ysr@777 | 29 | class ConcurrentMark; |
| ysr@777 | 30 | |
| ysr@777 | 31 | class ConcurrentMarkThread: public ConcurrentGCThread { |
| ysr@777 | 32 | friend class VMStructs; |
| ysr@777 | 33 | |
| ysr@777 | 34 | double _vtime_start; // Initial virtual time. |
| ysr@777 | 35 | double _vtime_accum; // Accumulated virtual time. |
| ysr@777 | 36 | |
| ysr@777 | 37 | double _vtime_mark_accum; |
| ysr@777 | 38 | double _vtime_count_accum; |
| ysr@777 | 39 | |
| ysr@777 | 40 | public: |
| ysr@777 | 41 | virtual void run(); |
| ysr@777 | 42 | |
| ysr@777 | 43 | private: |
| ysr@777 | 44 | ConcurrentMark* _cm; |
| ysr@777 | 45 | bool _started; |
| ysr@777 | 46 | bool _in_progress; |
| ysr@777 | 47 | |
| ysr@777 | 48 | void sleepBeforeNextCycle(); |
| ysr@777 | 49 | |
| ysr@777 | 50 | static SurrogateLockerThread* _slt; |
| ysr@777 | 51 | |
| ysr@777 | 52 | public: |
| ysr@777 | 53 | // Constructor |
| ysr@777 | 54 | ConcurrentMarkThread(ConcurrentMark* cm); |
| ysr@777 | 55 | |
| ysr@777 | 56 | static void makeSurrogateLockerThread(TRAPS); |
| ysr@777 | 57 | static SurrogateLockerThread* slt() { return _slt; } |
| ysr@777 | 58 | |
| ysr@777 | 59 | // Printing |
| ysr@777 | 60 | void print(); |
| ysr@777 | 61 | |
| ysr@777 | 62 | // Total virtual time so far. |
| ysr@777 | 63 | double vtime_accum(); |
| ysr@777 | 64 | // Marking virtual time so far |
| ysr@777 | 65 | double vtime_mark_accum(); |
| ysr@777 | 66 | // Counting virtual time so far. |
| ysr@777 | 67 | double vtime_count_accum() { return _vtime_count_accum; } |
| ysr@777 | 68 | |
| ysr@777 | 69 | ConcurrentMark* cm() { return _cm; } |
| ysr@777 | 70 | |
| ysr@777 | 71 | void set_started() { _started = true; } |
| ysr@777 | 72 | void clear_started() { _started = false; } |
| ysr@777 | 73 | bool started() { return _started; } |
| ysr@777 | 74 | |
| ysr@777 | 75 | void set_in_progress() { _in_progress = true; } |
| ysr@777 | 76 | void clear_in_progress() { _in_progress = false; } |
| ysr@777 | 77 | bool in_progress() { return _in_progress; } |
| ysr@777 | 78 | |
| ysr@777 | 79 | // Yield for GC |
| ysr@777 | 80 | void yield(); |
| ysr@777 | 81 | |
| ysr@777 | 82 | // shutdown |
| iveresov@1229 | 83 | void stop(); |
| ysr@777 | 84 | }; |
