Mercurial > hg > truffle
view src/share/vm/gc_implementation/g1/g1MarkSweep.hpp @ 1703:f6f3eef8a521
6581734: CMS Old Gen's collection usage is zero after GC which is incorrect
Summary: Management code enabled for use by a concurrent collector.
Reviewed-by: mchung, ysr
author | kevinw |
---|---|
date | Fri, 30 Jul 2010 22:43:50 +0100 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
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/* * Copyright (c) 2001, 2007, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.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(); };