154a1a02bf
Use script and some manual fixup to fix directores names in include guards. Reviewed-by: lfoltan, eosterlund, kbarrett
85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
/*
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* Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_GC_G1_G1CONCURRENTMARKBITMAP_HPP
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#define SHARE_GC_G1_G1CONCURRENTMARKBITMAP_HPP
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#include "gc/g1/g1RegionToSpaceMapper.hpp"
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#include "gc/shared/markBitMap.hpp"
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#include "memory/memRegion.hpp"
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#include "oops/oopsHierarchy.hpp"
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#include "utilities/bitMap.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "utilities/macros.hpp"
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class G1CMBitMap;
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class G1CMTask;
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class G1ConcurrentMark;
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class HeapRegion;
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// Closure for iteration over bitmaps
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class G1CMBitMapClosure {
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G1ConcurrentMark* const _cm;
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G1CMTask* const _task;
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public:
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G1CMBitMapClosure(G1CMTask *task, G1ConcurrentMark* cm) : _cm(cm), _task(task) { }
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bool do_addr(HeapWord* const addr);
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};
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class G1CMBitMapMappingChangedListener : public G1MappingChangedListener {
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G1CMBitMap* _bm;
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public:
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G1CMBitMapMappingChangedListener() : _bm(NULL) {}
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void set_bitmap(G1CMBitMap* bm) { _bm = bm; }
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virtual void on_commit(uint start_idx, size_t num_regions, bool zero_filled);
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};
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// A generic mark bitmap for concurrent marking. This is essentially a wrapper
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// around the BitMap class that is based on HeapWords, with one bit per (1 << _shifter) HeapWords.
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class G1CMBitMap : public MarkBitMap {
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G1CMBitMapMappingChangedListener _listener;
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protected:
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virtual void check_mark(HeapWord* addr) NOT_DEBUG_RETURN;
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public:
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G1CMBitMap() : MarkBitMap(), _listener() { _listener.set_bitmap(this); }
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// Initializes the underlying BitMap to cover the given area.
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void initialize(MemRegion heap, G1RegionToSpaceMapper* storage);
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// Apply the closure to the addresses that correspond to marked bits in the bitmap.
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inline bool iterate(G1CMBitMapClosure* cl, MemRegion mr);
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void clear_region(HeapRegion* hr);
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};
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#endif // SHARE_GC_G1_G1CONCURRENTMARKBITMAP_HPP
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