1 /* 2 * Copyright (c) 2001, 2007, 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 inline HeapRegion* HeapRegionSeq::addr_to_region(const void* addr) { 26 assert(_seq_bottom != NULL, "bad _seq_bottom in addr_to_region"); 27 if ((char*) addr >= _seq_bottom) { 28 size_t diff = (size_t) pointer_delta((HeapWord*) addr, 29 (HeapWord*) _seq_bottom); 30 int index = (int) (diff >> HeapRegion::LogOfHRGrainWords); 31 assert(index >= 0, "invariant / paranoia"); 32 if (index < _regions.length()) { 33 HeapRegion* hr = _regions.at(index); 34 assert(hr->is_in_reserved(addr), 35 "addr_to_region is wrong..."); 36 return hr; 37 } 38 } 39 return NULL; 40 }