jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/heapRegionSeq.inline.hpp@92add02409c9

     1 /*

     2  * Copyright (c) 2001, 2010, 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  */

    25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP

    26 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP

    28 #include "gc_implementation/g1/heapRegionSeq.hpp"

    30 inline HeapRegion* HeapRegionSeq::addr_to_region(const void* addr) {

    31   assert(_seq_bottom != NULL, "bad _seq_bottom in addr_to_region");

    32   if ((char*) addr >= _seq_bottom) {

    33     size_t diff = (size_t) pointer_delta((HeapWord*) addr,

    34                                          (HeapWord*) _seq_bottom);

    35     int index = (int) (diff >> HeapRegion::LogOfHRGrainWords);

    36     assert(index >= 0, "invariant / paranoia");

    37     if (index < _regions.length()) {

    38       HeapRegion* hr = _regions.at(index);

    39       assert(hr->is_in_reserved(addr),

    40              "addr_to_region is wrong...");

    41       return hr;

    42     }

    43   }

    44   return NULL;

    45 }

    47 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP

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