1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef SHARE_VM_GC_SHARED_MARKBITMAP_INLINE_HPP

    26 #define SHARE_VM_GC_SHARED_MARKBITMAP_INLINE_HPP

    27 

    28 #include "gc/shared/collectedHeap.hpp"

    29 #include "gc/shared/markBitMap.hpp"

    30 #include "memory/memRegion.hpp"

    31 #include "memory/universe.hpp"

    32 #include "utilities/align.hpp"

    33 #include "utilities/bitMap.inline.hpp"

    34 

    35 inline HeapWord* MarkBitMap::get_next_marked_addr(const HeapWord* addr,

    36                                                 const HeapWord* limit) const {

    37   assert(limit != NULL, "limit must not be NULL");

    38   // Round addr up to a possible object boundary to be safe.

    39   size_t const addr_offset = addr_to_offset(align_up(addr, HeapWordSize << _shifter));

    40   size_t const limit_offset = addr_to_offset(limit);

    41   size_t const nextOffset = _bm.get_next_one_offset(addr_offset, limit_offset);

    42   return offset_to_addr(nextOffset);

    43 }

    44 

    45 inline void MarkBitMap::mark(HeapWord* addr) {

    46   check_mark(addr);

    47   _bm.set_bit(addr_to_offset(addr));

    48 }

    49 

    50 inline void MarkBitMap::clear(HeapWord* addr) {

    51   check_mark(addr);

    52   _bm.clear_bit(addr_to_offset(addr));

    53 }

    54 

    55 inline bool MarkBitMap::par_mark(HeapWord* addr) {

    56   check_mark(addr);

    57   return _bm.par_set_bit(addr_to_offset(addr));

    58 }

    59 

    60 inline bool MarkBitMap::par_mark(oop obj) {

    61   return par_mark((HeapWord*) obj);

    62 }

    63 

    64 inline bool MarkBitMap::is_marked(oop obj) const{

    65   return is_marked((HeapWord*) obj);

    66 }

    67 

    68 inline void MarkBitMap::clear(oop obj) {

    69   clear((HeapWord*) obj);

    70 }

    71 

    72 #endif // SHARE_VM_GC_SHARED_MARKBITMAP_INLINE_HPP