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a945c346 | 1 | /* Copyright (C) 2005-2024 Free Software Foundation, Inc. |
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2 | Contributed by Richard Henderson <rth@redhat.com>. |
3 | ||
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4 | This file is part of the GNU Offloading and Multi Processing Library |
5 | (libgomp). | |
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6 | |
7 | Libgomp is free software; you can redistribute it and/or modify it | |
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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. | |
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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 | |
748086b7 | 14 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 | more details. |
16 | ||
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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/>. */ | |
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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 | ||
3e03ed66 | 30 | #define _GNU_SOURCE |
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31 | #include "libgomp.h" |
32 | #include <stdlib.h> | |
33 | ||
34 | ||
35 | void * | |
36 | gomp_malloc (size_t size) | |
37 | { | |
38 | void *ret = malloc (size); | |
39 | if (ret == NULL) | |
40 | gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size); | |
41 | return ret; | |
42 | } | |
43 | ||
44 | void * | |
45 | gomp_malloc_cleared (size_t size) | |
46 | { | |
47 | void *ret = calloc (1, size); | |
48 | if (ret == NULL) | |
49 | gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size); | |
50 | return ret; | |
51 | } | |
52 | ||
53 | void * | |
54 | gomp_realloc (void *old, size_t size) | |
55 | { | |
56 | void *ret = realloc (old, size); | |
57 | if (ret == NULL) | |
58 | gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size); | |
59 | return ret; | |
60 | } | |
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61 | |
62 | void * | |
63 | gomp_aligned_alloc (size_t al, size_t size) | |
64 | { | |
65 | void *ret; | |
66 | if (al < sizeof (void *)) | |
67 | al = sizeof (void *); | |
42fd2cd9 | 68 | #ifdef HAVE_MEMALIGN |
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69 | { |
70 | extern void *memalign (size_t, size_t); | |
71 | ret = memalign (al, size); | |
72 | } | |
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73 | #elif defined(HAVE_POSIX_MEMALIGN) |
74 | if (posix_memalign (&ret, al, size) != 0) | |
75 | ret = NULL; | |
1b2b9301 | 76 | #elif defined(HAVE_ALIGNED_ALLOC) |
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77 | { |
78 | size_t sz = (size + al - 1) & ~(al - 1); | |
79 | if (__builtin_expect (sz >= size, 1)) | |
80 | ret = aligned_alloc (al, sz); | |
81 | else | |
82 | ret = NULL; | |
83 | } | |
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84 | #elif defined(HAVE__ALIGNED_MALLOC) |
85 | ret = _aligned_malloc (size, al); | |
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86 | #else |
87 | ret = NULL; | |
88 | if ((al & (al - 1)) == 0 && size) | |
89 | { | |
90 | void *p = malloc (size + al); | |
91 | if (p) | |
92 | { | |
93 | void *ap = (void *) (((uintptr_t) p + al) & -al); | |
94 | ((void **) ap)[-1] = p; | |
95 | ret = ap; | |
96 | } | |
97 | } | |
98 | #endif | |
99 | if (ret == NULL) | |
100 | gomp_fatal ("Out of memory allocating %lu bytes", (unsigned long) size); | |
101 | return ret; | |
102 | } | |
103 | ||
104 | void | |
105 | gomp_aligned_free (void *ptr) | |
106 | { | |
107 | #ifdef GOMP_HAVE_EFFICIENT_ALIGNED_ALLOC | |
108 | free (ptr); | |
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109 | #elif defined(HAVE__ALIGNED_MALLOC) |
110 | _aligned_free (ptr); | |
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111 | #else |
112 | if (ptr) | |
113 | free (((void **) ptr)[-1]); | |
114 | #endif | |
115 | } |