1 /*

     2  * Copyright (c) 2018, Red Hat, Inc. All rights reserved.

     3  *

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

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

     6  * published by the Free Software Foundation.

     7  *

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

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

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

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

    12  * accompanied this code).

    13  *

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

    15  * 2 along with this work; if not, write to the Free Software Foundation,

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

    17  *

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

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

    20  * questions.

    21  *

    22  */

    23 

    24 #ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP

    25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP

    26 

    27 #include "gc/shenandoah/shenandoahMarkingContext.hpp"

    28 

    29 inline MarkBitMap* ShenandoahMarkingContext::mark_bit_map() {

    30   return &_mark_bit_map;

    31 }

    32 

    33 inline bool ShenandoahMarkingContext::mark(oop obj) {

    34   shenandoah_assert_not_forwarded(NULL, obj);

    35   HeapWord* addr = (HeapWord*) obj;

    36   return (! allocated_after_mark_start(addr)) && _mark_bit_map.par_mark(addr);

    37 }

    38 

    39 inline bool ShenandoahMarkingContext::is_marked(oop obj) const {

    40   HeapWord* addr = (HeapWord*) obj;

    41   return allocated_after_mark_start(addr) || _mark_bit_map.is_marked(addr);

    42 }

    43 

    44 inline bool ShenandoahMarkingContext::allocated_after_mark_start(HeapWord* addr) const {

    45   uintx index = ((uintx) addr) >> ShenandoahHeapRegion::region_size_bytes_shift();

    46   HeapWord* top_at_mark_start = _top_at_mark_starts[index];

    47   bool alloc_after_mark_start = addr >= top_at_mark_start;

    48   return alloc_after_mark_start;

    49 }

    50 

    51 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP