growableArray.cpp revision 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
28void GenericGrowableArray::set_nesting() {
29  if (on_stack()) {
30    _nesting = Thread::current()->resource_area()->nesting();
31  }
32}
33
34void 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
45void* 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}
54