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18f3386a98
First mercurial integration of the code for the Garbage-First garbage collector. Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
40 lines
1.6 KiB
C++
40 lines
1.6 KiB
C++
/*
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* Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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inline HeapRegion* HeapRegionSeq::addr_to_region(const void* addr) {
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assert(_seq_bottom != NULL, "bad _seq_bottom in addr_to_region");
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if ((char*) addr >= _seq_bottom) {
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size_t diff = (size_t) pointer_delta((HeapWord*) addr,
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(HeapWord*) _seq_bottom);
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int index = (int) (diff >> HeapRegion::LogOfHRGrainWords);
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assert(index >= 0, "invariant / paranoia");
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if (index < _regions.length()) {
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HeapRegion* hr = _regions.at(index);
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assert(hr->is_in_reserved(addr),
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"addr_to_region is wrong...");
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return hr;
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}
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}
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return NULL;
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}
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