VirtualBox

source: vbox/trunk/include/iprt/alloca.h@ 68920

Last change on this file since 68920 was 62942, checked in by vboxsync, 8 years ago

iprt/alloca.h: There's no need to include <malloc.h> on NetBSD too,
it's just a wrapper to include <stdlib.h> already explicitly included
just above.

I wonder if this negative #if test should really be changed into
positive.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.0 KB
Line 
1/** @file
2 * IPRT - alloca().
3 */
4
5/*
6 * Copyright (C) 2006-2016 Oracle Corporation
7 *
8 * This file is part of VirtualBox Open Source Edition (OSE), as
9 * available from http://www.virtualbox.org. This file is free software;
10 * you can redistribute it and/or modify it under the terms of the GNU
11 * General Public License (GPL) as published by the Free Software
12 * Foundation, in version 2 as it comes in the "COPYING" file of the
13 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15 *
16 * The contents of this file may alternatively be used under the terms
17 * of the Common Development and Distribution License Version 1.0
18 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19 * VirtualBox OSE distribution, in which case the provisions of the
20 * CDDL are applicable instead of those of the GPL.
21 *
22 * You may elect to license modified versions of this file under the
23 * terms and conditions of either the GPL or the CDDL or both.
24 */
25
26#ifndef ___iprt_alloca_h
27#define ___iprt_alloca_h
28
29#if defined(IN_RC) || defined(IN_RING0_AGNOSTIC)
30# error "No alloca() in raw-mode and agnostic ring-0 context as it may have external dependencies like libgcc."
31#endif
32
33/*
34 * If there are more difficult platforms out there, we'll do OS
35 * specific #ifdefs. But for now we'll just include the headers
36 * which normally contains the alloca() prototype.
37 * When we're in kernel territory it starts getting a bit more
38 * interesting of course...
39 */
40#if defined(IN_RING0) \
41 && ( defined(RT_OS_DARWIN) \
42 || defined(RT_OS_FREEBSD) \
43 || defined(RT_OS_LINUX) \
44 || defined(RT_OS_NETBSD) \
45 || defined(RT_OS_SOLARIS))
46/* ASSUMES GNU C */
47# define alloca(cb) __builtin_alloca(cb)
48
49#else
50# include <stdlib.h>
51# if !defined(RT_OS_DARWIN) && !defined(RT_OS_FREEBSD) && !defined(RT_OS_NETBSD)
52# include <malloc.h>
53# endif
54# if defined(RT_OS_SOLARIS) || defined(RT_OS_LINUX)
55# include <alloca.h>
56# endif
57#endif
58
59#endif
60
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