growableArray.cpp revision 3718:b9a9ed0f8eeb 
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
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23 */
24
25#include "precompiled.hpp"
26#include "memory/resourceArea.hpp"
27#include "utilities/growableArray.hpp"
28#ifdef TARGET_OS_FAMILY_linux
29# include "thread_linux.inline.hpp"
30#endif
31#ifdef TARGET_OS_FAMILY_solaris
32# include "thread_solaris.inline.hpp"
33#endif
34#ifdef TARGET_OS_FAMILY_windows
35# include "thread_windows.inline.hpp"
36#endif
37#ifdef TARGET_OS_FAMILY_bsd
38# include "thread_bsd.inline.hpp"
39#endif
40#ifdef ASSERT
41void GenericGrowableArray::set_nesting() {
42  if (on_stack()) {
43    _nesting = Thread::current()->resource_area()->nesting();
44  }
45}
46
47void GenericGrowableArray::check_nesting() {
48  // Check for insidious allocation bug: if a GrowableArray overflows, the
49  // grown array must be allocated under the same ResourceMark as the original.
50  // Otherwise, the _data array will be deallocated too early.
51  if (on_stack() &&
52      _nesting != Thread::current()->resource_area()->nesting()) {
53    fatal("allocation bug: GrowableArray could grow within nested ResourceMark");
54  }
55}
56#endif
57
58void* GenericGrowableArray::raw_allocate(int elementSize) {
59  assert(_max >= 0, "integer overflow");
60  size_t byte_size = elementSize * (size_t) _max;
61  if (on_stack()) {
62    return (void*)resource_allocate_bytes(byte_size);
63  } else if (on_C_heap()) {
64    return (void*)AllocateHeap(byte_size, _memflags);
65  } else {
66    return _arena->Amalloc(byte_size);
67  }
68}
69