pmm_malloc.h revision 169690 
1/* Copyright (C) 2004, 2006 Free Software Foundation, Inc.
2
3   This file is part of GCC.
4
5   GCC is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 2, or (at your option)
8   any later version.
9
10   GCC is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with GCC; see the file COPYING.  If not, write to
17   the Free Software Foundation, 51 Franklin Street, Fifth Floor,
18   Boston, MA 02110-1301, USA.  */
19
20/* As a special exception, if you include this header file into source
21   files compiled by GCC, this header file does not by itself cause
22   the resulting executable to be covered by the GNU General Public
23   License.  This exception does not however invalidate any other
24   reasons why the executable file might be covered by the GNU General
25   Public License.  */
26
27#ifndef _MM_MALLOC_H_INCLUDED
28#define _MM_MALLOC_H_INCLUDED
29
30#include <stdlib.h>
31
32/* We can't depend on <stdlib.h> since the prototype of posix_memalign
33   may not be visible.  */
34#ifndef __cplusplus
35extern int posix_memalign (void **, size_t, size_t);
36#else
37extern "C" int posix_memalign (void **, size_t, size_t) throw ();
38#endif
39
40static __inline void *
41_mm_malloc (size_t size, size_t alignment)
42{
43  void *ptr;
44  if (alignment == 1)
45    return malloc (size);
46  if (alignment == 2 || (sizeof (void *) == 8 && alignment == 4))
47    alignment = sizeof (void *);
48  if (posix_memalign (&ptr, alignment, size) == 0)
49    return ptr;
50  else
51    return NULL;
52}
53
54static __inline void
55_mm_free (void * ptr)
56{
57  free (ptr);
58}
59
60#endif /* _MM_MALLOC_H_INCLUDED */
61