/*
* Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* 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.
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#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP
#define SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
#include "gc_implementation/g1/heapRegion.hpp"
#include "memory/genMarkSweep.hpp"
#include "memory/generation.hpp"
#include "memory/universe.hpp"
#include "oops/markOop.hpp"
#include "oops/oop.hpp"
#include "runtime/timer.hpp"
#include "utilities/growableArray.hpp"
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);
static STWGCTimer* gc_timer() { return GenMarkSweep::_gc_timer; }
static SerialOldTracer* gc_tracer() { return GenMarkSweep::_gc_tracer; }
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();
};
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP