comparison src/share/vm/utilities/growableArray.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children 83ef1482304c
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1997-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24 # include "incls/_precompiled.incl"
25 # include "incls/_growableArray.cpp.incl"
26
27 #ifdef ASSERT
28 void GenericGrowableArray::set_nesting() {
29 if (on_stack()) {
30 _nesting = Thread::current()->resource_area()->nesting();
31 }
32 }
33
34 void GenericGrowableArray::check_nesting() {
35 // Check for insidious allocation bug: if a GrowableArray overflows, the
36 // grown array must be allocated under the same ResourceMark as the original.
37 // Otherwise, the _data array will be deallocated too early.
38 if (on_stack() &&
39 _nesting != Thread::current()->resource_area()->nesting()) {
40 fatal("allocation bug: GrowableArray could grow within nested ResourceMark");
41 }
42 }
43 #endif
44
45 void* GenericGrowableArray::raw_allocate(int elementSize) {
46 if (on_stack()) {
47 return (void*)resource_allocate_bytes(elementSize * _max);
48 } else if (on_C_heap()) {
49 return (void*)AllocateHeap(elementSize * _max, "GrET in " __FILE__);
50 } else {
51 return _arena->Amalloc(elementSize * _max);
52 }
53 }