view src/share/vm/gc/g1/g1EvacFailure.hpp @ 8677:9690cc21ec74

8129558: Coalesce dead objects during removal of self-forwarded pointers Summary: To improve performance of self-forwarding fixup during evacuation failure, coalesce the work done for dead objects. Reviewed-by: mgerdin, tbenson, tonyp
author tschatzl
date Tue, 07 Jul 2015 14:20:08 +0200
parents 92457dfb91bd
children f93887075504
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/*
 * Copyright (c) 2012, 2015, 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.
 *
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#ifndef SHARE_VM_GC_G1_G1EVACFAILURE_HPP
#define SHARE_VM_GC_G1_G1EVACFAILURE_HPP

#include "gc/g1/g1OopClosures.hpp"
#include "gc/g1/heapRegionManager.hpp"
#include "gc/shared/workgroup.hpp"
#include "utilities/globalDefinitions.hpp"

class G1CollectedHeap;

// Task to fixup self-forwarding pointers
// installed as a result of an evacuation failure.
class G1ParRemoveSelfForwardPtrsTask: public AbstractGangTask {
protected:
  G1CollectedHeap* _g1h;
  HeapRegionClaimer _hrclaimer;

public:
  G1ParRemoveSelfForwardPtrsTask();

  void work(uint worker_id);
};

#endif // SHARE_VM_GC_G1_G1EVACFAILURE_HPP