1/*
2 * Copyright (c) 1997, 2012, 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#include "precompiled.hpp"
26#include "memory/allocation.inline.hpp"
27#include "memory/resourceArea.hpp"
28#include "runtime/thread.inline.hpp"
29#include "utilities/growableArray.hpp"
30
31#ifdef ASSERT
32void GenericGrowableArray::set_nesting() {
33 if (on_stack()) {
34 _nesting = Thread::current()->resource_area()->nesting();
35 }
36}
37
38void GenericGrowableArray::check_nesting() {
39 // Check for insidious allocation bug: if a GrowableArray overflows, the
40 // grown array must be allocated under the same ResourceMark as the original.
41 // Otherwise, the _data array will be deallocated too early.
42 if (on_stack() &&
43 _nesting != Thread::current()->resource_area()->nesting()) {
44 fatal("allocation bug: GrowableArray could grow within nested ResourceMark");
45 }
46}
47#endif
48
49void* GenericGrowableArray::raw_allocate(int elementSize) {
50 assert(_max >= 0, "integer overflow");
51 size_t byte_size = elementSize * (size_t) _max;
52 if (on_stack()) {
53 return (void*)resource_allocate_bytes(byte_size);
54 } else if (on_C_heap()) {
55 return (void*)AllocateHeap(byte_size, _memflags);
56 } else {
57 return _arena->Amalloc(byte_size);
58 }
59}
60
61void GenericGrowableArray::free_C_heap(void* elements) {
62 FreeHeap(elements);
63}
64