Mercurial > hg > truffle

comparison src/share/vm/gc_implementation/g1/g1MarkSweep.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 c18cbe5936b8
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 class ReferenceProcessor;
26
27 // G1MarkSweep takes care of global mark-compact garbage collection for a
28 // G1CollectedHeap using a four-phase pointer forwarding algorithm. All
29 // generations are assumed to support marking; those that can also support
30 // compaction.
31 //
32 // Class unloading will only occur when a full gc is invoked.
33
34
35 class G1MarkSweep : AllStatic {
36 friend class VM_G1MarkSweep;
37 friend class Scavenge;
38
39 public:
40
41 static void invoke_at_safepoint(ReferenceProcessor* rp,
42 bool clear_all_softrefs);
43
44 private:
45
46 // Mark live objects
47 static void mark_sweep_phase1(bool& marked_for_deopt,
48 bool clear_all_softrefs);
49 // Calculate new addresses
50 static void mark_sweep_phase2();
51 // Update pointers
52 static void mark_sweep_phase3();
53 // Move objects to new positions
54 static void mark_sweep_phase4();
55
56 static void allocate_stacks();
57 };