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/*
* Copyright (c) 2012, 2019, 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.
*
*/
#ifndef SHARE_GC_G1_G1EVACFAILURE_HPP
#define SHARE_GC_G1_G1EVACFAILURE_HPP
#include "gc/shared/workerThread.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/bitMap.hpp"
class G1CollectedHeap;
class G1ConcurrentMark;
class G1EvacFailureRegions;
// Task to fixup self-forwarding pointers within the objects installed as a result
// of an evacuation failure.
class G1RemoveSelfForwardsTask : public WorkerTask {
G1CollectedHeap* _g1h;
G1ConcurrentMark* _cm;
G1EvacFailureRegions* _evac_failure_regions;
CHeapBitMap _chunk_bitmap;
uint _num_chunks_per_region;
uint _num_evac_fail_regions;
size_t _chunk_size;
bool claim_chunk(uint chunk_idx) {
return _chunk_bitmap.par_set_bit(chunk_idx);
}
void process_chunk(uint worker_id, uint chunk_idx);
public:
explicit G1RemoveSelfForwardsTask(G1EvacFailureRegions* evac_failure_regions);
void work(uint worker_id);
};
#endif // SHARE_GC_G1_G1EVACFAILURE_HPP
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