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8180193: Make marking bitmap code available to other GCs

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Reviewed-by: shade, stefank
This commit is contained in:
Roman Kennke 2018-08-29 20:15:09 +02:00
parent d40735db17
commit 296002fe50
6 changed files with 247 additions and 122 deletions
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72
src/hotspot/share/gc/shared/markBitMap.inline.hpp Normal file
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/*
* Copyright (c) 2018, 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_VM_GC_SHARED_MARKBITMAP_INLINE_HPP
#define SHARE_VM_GC_SHARED_MARKBITMAP_INLINE_HPP
#include "gc/shared/collectedHeap.hpp"
#include "gc/shared/markBitMap.hpp"
#include "memory/memRegion.hpp"
#include "memory/universe.hpp"
#include "utilities/align.hpp"
#include "utilities/bitMap.inline.hpp"
inline HeapWord* MarkBitMap::get_next_marked_addr(const HeapWord* addr,
const HeapWord* limit) const {
assert(limit != NULL, "limit must not be NULL");
// Round addr up to a possible object boundary to be safe.
size_t const addr_offset = addr_to_offset(align_up(addr, HeapWordSize << _shifter));
size_t const limit_offset = addr_to_offset(limit);
size_t const nextOffset = _bm.get_next_one_offset(addr_offset, limit_offset);
return offset_to_addr(nextOffset);
}
inline void MarkBitMap::mark(HeapWord* addr) {
check_mark(addr);
_bm.set_bit(addr_to_offset(addr));
}
inline void MarkBitMap::clear(HeapWord* addr) {
check_mark(addr);
_bm.clear_bit(addr_to_offset(addr));
}
inline bool MarkBitMap::par_mark(HeapWord* addr) {
check_mark(addr);
return _bm.par_set_bit(addr_to_offset(addr));
}
inline bool MarkBitMap::par_mark(oop obj) {
return par_mark((HeapWord*) obj);
}
inline bool MarkBitMap::is_marked(oop obj) const{
return is_marked((HeapWord*) obj);
}
inline void MarkBitMap::clear(oop obj) {
clear((HeapWord*) obj);
}
#endif // SHARE_VM_GC_SHARED_MARKBITMAP_INLINE_HPP