1 /* Copyright (C) 2005-2019 Free Software Foundation, Inc.
2 Contributed by Richard Henderson <rth@redhat.com>.
3
4 This file is part of the GNU Offloading and Multi Processing Library
5 (libgomp).
6
7 Libgomp is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 more details.
16
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
20
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
25
26 /* This file contains wrappers for the system allocation routines. Most
27 places in the OpenMP API do not make any provision for failure, so in
28 general we cannot allow memory allocation to fail. */
29
30 #include "libgomp.h"
31 #include <stdlib.h>
32
33
34 void *
gomp_malloc(size_t size)35 gomp_malloc (size_t size)
36 {
37 void *ret = malloc (size);
38 if (ret == NULL)
39 gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
40 return ret;
41 }
42
43 void *
gomp_malloc_cleared(size_t size)44 gomp_malloc_cleared (size_t size)
45 {
46 void *ret = calloc (1, size);
47 if (ret == NULL)
48 gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
49 return ret;
50 }
51
52 void *
gomp_realloc(void * old,size_t size)53 gomp_realloc (void *old, size_t size)
54 {
55 void *ret = realloc (old, size);
56 if (ret == NULL)
57 gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
58 return ret;
59 }
60
61 void *
gomp_aligned_alloc(size_t al,size_t size)62 gomp_aligned_alloc (size_t al, size_t size)
63 {
64 void *ret;
65 if (al < sizeof (void *))
66 al = sizeof (void *);
67 #ifdef HAVE_ALIGNED_ALLOC
68 ret = aligned_alloc (al, size);
69 #elif defined(HAVE__ALIGNED_MALLOC)
70 ret = _aligned_malloc (size, al);
71 #elif defined(HAVE_POSIX_MEMALIGN)
72 if (posix_memalign (&ret, al, size) != 0)
73 ret = NULL;
74 #elif defined(HAVE_MEMALIGN)
75 {
76 extern void *memalign (size_t, size_t);
77 ret = memalign (al, size);
78 }
79 #else
80 ret = NULL;
81 if ((al & (al - 1)) == 0 && size)
82 {
83 void *p = malloc (size + al);
84 if (p)
85 {
86 void *ap = (void *) (((uintptr_t) p + al) & -al);
87 ((void **) ap)[-1] = p;
88 ret = ap;
89 }
90 }
91 #endif
92 if (ret == NULL)
93 gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size);
94 return ret;
95 }
96
97 void
gomp_aligned_free(void * ptr)98 gomp_aligned_free (void *ptr)
99 {
100 #ifdef GOMP_HAVE_EFFICIENT_ALIGNED_ALLOC
101 free (ptr);
102 #else
103 if (ptr)
104 free (((void **) ptr)[-1]);
105 #endif
106 }
107