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src/share/vm/gc_implementation/g1/g1MarkSweep.hpp@7ea5ca260b28 (annotated)
src/share/vm/gc_implementation/g1/g1MarkSweep.hpp
Sat, 07 Mar 2009 11:07:37 -0500
- author
- tonyp
- date
- Sat, 07 Mar 2009 11:07:37 -0500
- changeset 1054
- 7ea5ca260b28
- parent 777
- 37f87013dfd8
- child 1907
- c18cbe5936b8
- permissions
- -rw-r--r--
6814467: G1: small fixes related to concurrent marking verboseness
Summary: A few small fixes to remove some inconsistencies in the concurrent mark-related verbose GC output.
Reviewed-by: jmasa
| ysr@777 | 1 | /* |
| ysr@777 | 2 | * Copyright 2001-2007 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 | class ReferenceProcessor; |
| ysr@777 | 26 | |
| ysr@777 | 27 | // G1MarkSweep takes care of global mark-compact garbage collection for a |
| ysr@777 | 28 | // G1CollectedHeap using a four-phase pointer forwarding algorithm. All |
| ysr@777 | 29 | // generations are assumed to support marking; those that can also support |
| ysr@777 | 30 | // compaction. |
| ysr@777 | 31 | // |
| ysr@777 | 32 | // Class unloading will only occur when a full gc is invoked. |
| ysr@777 | 33 | |
| ysr@777 | 34 | |
| ysr@777 | 35 | class G1MarkSweep : AllStatic { |
| ysr@777 | 36 | friend class VM_G1MarkSweep; |
| ysr@777 | 37 | friend class Scavenge; |
| ysr@777 | 38 | |
| ysr@777 | 39 | public: |
| ysr@777 | 40 | |
| ysr@777 | 41 | static void invoke_at_safepoint(ReferenceProcessor* rp, |
| ysr@777 | 42 | bool clear_all_softrefs); |
| ysr@777 | 43 | |
| ysr@777 | 44 | private: |
| ysr@777 | 45 | |
| ysr@777 | 46 | // Mark live objects |
| ysr@777 | 47 | static void mark_sweep_phase1(bool& marked_for_deopt, |
| ysr@777 | 48 | bool clear_all_softrefs); |
| ysr@777 | 49 | // Calculate new addresses |
| ysr@777 | 50 | static void mark_sweep_phase2(); |
| ysr@777 | 51 | // Update pointers |
| ysr@777 | 52 | static void mark_sweep_phase3(); |
| ysr@777 | 53 | // Move objects to new positions |
| ysr@777 | 54 | static void mark_sweep_phase4(); |
| ysr@777 | 55 | |
| ysr@777 | 56 | static void allocate_stacks(); |
| ysr@777 | 57 | }; |
