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94e9e396 DE |
1 | /* |
2 | * memory wrappers | |
3 | * | |
4 | * Copyright (c) Artem Bityutskiy, 2007, 2008 | |
5 | * Copyright 2001, 2002 Red Hat, Inc. | |
6 | * 2001 David A. Schleef <ds@lineo.com> | |
7 | * 2002 Axis Communications AB | |
8 | * 2001, 2002 Erik Andersen <andersen@codepoet.org> | |
9 | * 2004 University of Szeged, Hungary | |
10 | * 2006 KaiGai Kohei <kaigai@ak.jp.nec.com> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
20 | * the GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
fa07eaa6 | 24 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
94e9e396 DE |
25 | */ |
26 | ||
27 | #ifndef __MTD_UTILS_XALLOC_H__ | |
28 | #define __MTD_UTILS_XALLOC_H__ | |
29 | ||
30 | #include <stdarg.h> | |
31 | #include <stdlib.h> | |
32 | #include <string.h> | |
33 | ||
34 | /* | |
35 | * Mark these functions as unused so that gcc does not emit warnings | |
36 | * when people include this header but don't use every function. | |
37 | */ | |
38 | ||
39 | __attribute__((unused)) | |
40 | static void *xmalloc(size_t size) | |
41 | { | |
42 | void *ptr = malloc(size); | |
43 | ||
44 | if (ptr == NULL && size != 0) | |
45 | sys_errmsg_die("out of memory"); | |
46 | return ptr; | |
47 | } | |
48 | ||
49 | __attribute__((unused)) | |
50 | static void *xcalloc(size_t nmemb, size_t size) | |
51 | { | |
52 | void *ptr = calloc(nmemb, size); | |
53 | ||
54 | if (ptr == NULL && nmemb != 0 && size != 0) | |
55 | sys_errmsg_die("out of memory"); | |
56 | return ptr; | |
57 | } | |
58 | ||
59 | __attribute__((unused)) | |
60 | static void *xzalloc(size_t size) | |
61 | { | |
62 | return xcalloc(1, size); | |
63 | } | |
64 | ||
65 | __attribute__((unused)) | |
66 | static void *xrealloc(void *ptr, size_t size) | |
67 | { | |
68 | ptr = realloc(ptr, size); | |
69 | if (ptr == NULL && size != 0) | |
70 | sys_errmsg_die("out of memory"); | |
71 | return ptr; | |
72 | } | |
73 | ||
74 | __attribute__((unused)) | |
75 | static char *xstrdup(const char *s) | |
76 | { | |
77 | char *t; | |
78 | ||
79 | if (s == NULL) | |
80 | return NULL; | |
81 | t = strdup(s); | |
82 | if (t == NULL) | |
83 | sys_errmsg_die("out of memory"); | |
84 | return t; | |
85 | } | |
86 | ||
87 | #ifdef _GNU_SOURCE | |
88 | ||
89 | __attribute__((unused)) | |
90 | static int xasprintf(char **strp, const char *fmt, ...) | |
91 | { | |
92 | int cnt; | |
93 | va_list ap; | |
94 | ||
95 | va_start(ap, fmt); | |
96 | cnt = vasprintf(strp, fmt, ap); | |
97 | va_end(ap); | |
98 | ||
99 | if (cnt == -1) | |
100 | sys_errmsg_die("out of memory"); | |
101 | ||
102 | return cnt; | |
103 | } | |
104 | #endif | |
105 | ||
106 | #endif /* !__MTD_UTILS_XALLOC_H__ */ |