Mercurial > hg > truffle
diff src/share/vm/gc_implementation/g1/g1MarkSweep.hpp @ 342:37f87013dfd8
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 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/gc_implementation/g1/g1MarkSweep.hpp Thu Jun 05 15:57:56 2008 -0700 @@ -0,0 +1,57 @@ +/* + * Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +class ReferenceProcessor; + +// G1MarkSweep takes care of global mark-compact garbage collection for a +// G1CollectedHeap using a four-phase pointer forwarding algorithm. All +// generations are assumed to support marking; those that can also support +// compaction. +// +// Class unloading will only occur when a full gc is invoked. + + +class G1MarkSweep : AllStatic { + friend class VM_G1MarkSweep; + friend class Scavenge; + + public: + + static void invoke_at_safepoint(ReferenceProcessor* rp, + bool clear_all_softrefs); + + private: + + // Mark live objects + static void mark_sweep_phase1(bool& marked_for_deopt, + bool clear_all_softrefs); + // Calculate new addresses + static void mark_sweep_phase2(); + // Update pointers + static void mark_sweep_phase3(); + // Move objects to new positions + static void mark_sweep_phase4(); + + static void allocate_stacks(); +};