1 /*

     2  * Copyright (c) 2017, 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_SHENANDOAHCOLLECTIONSET_INLINE_HPP

    25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTIONSET_INLINE_HPP

    26 

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

    28 #include "gc/shenandoah/shenandoahHeap.hpp"

    29 #include "gc/shenandoah/shenandoahHeap.inline.hpp"

    30 #include "gc/shenandoah/shenandoahHeapRegion.hpp"

    31 

    32 bool ShenandoahCollectionSet::is_in(size_t region_number) const {

    33   assert(region_number < _heap->num_regions(), "Sanity");

    34   return _cset_map[region_number] == 1;

    35 }

    36 

    37 bool ShenandoahCollectionSet::is_in(ShenandoahHeapRegion* r) const {

    38   return is_in(r->region_number());

    39 }

    40 

    41 bool ShenandoahCollectionSet::is_in(HeapWord* p) const {

    42   assert(_heap->is_in(p), "Must be in the heap");

    43   uintx index = ((uintx) p) >> _region_size_bytes_shift;

    44   // no need to subtract the bottom of the heap from p,

    45   // _biased_cset_map is biased

    46   return _biased_cset_map[index] == 1;

    47 }

    48 

    49 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTIONSET_INLINE_HPP