4 * Common xmalloc memory allocation routines
6 * written by Jaakko Heinonen <jheinonen@users.sourceforge.net>
10 * Copyright (c) 2005 Jaakko Heinonen
11 * All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer
18 * in this position and unchanged.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43 xmalloc_default_error_handler(int err)
45 fprintf(stderr, _("Memory allocation failure: %s\n"), strerror(err));
49 static void (*xmalloc_handle_error)(int err) = xmalloc_default_error_handler;
52 xmalloc_set_error_handler(void (*func)(int err))
55 xmalloc_handle_error = func;
57 xmalloc_handle_error = xmalloc_default_error_handler;
65 if((p = malloc(size)) == NULL)
66 (*xmalloc_handle_error)(errno);
84 _xmalloc_inc(size_t size, size_t inc, int zero)
86 size_t total_size = size + inc;
89 * check if the calculation overflowed
91 if(total_size < size) {
92 (*xmalloc_handle_error)(EINVAL);
96 return zero ? xmalloc0(total_size) : xmalloc(total_size);
100 xmalloc_inc(size_t size, size_t inc)
102 return _xmalloc_inc(size, inc, 0);
106 xmalloc0_inc(size_t size, size_t inc)
108 return _xmalloc_inc(size, inc, 1);
112 xrealloc(void *ptr, size_t size)
114 if((ptr = realloc(ptr, size)) == NULL)
115 (*xmalloc_handle_error)(errno);
121 xrealloc_inc(void *ptr, size_t size, size_t inc)
123 size_t total_size = size + inc;
126 * check if the calculation overflowed
128 if(total_size < size) {
129 (*xmalloc_handle_error)(EINVAL);
133 if((ptr = realloc(ptr, total_size)) == NULL)
134 (*xmalloc_handle_error)(errno);
140 xstrdup(const char *s)
142 size_t len = strlen(s);
145 new = xmalloc_inc(len, 1);
149 return (char *)memcpy(new, s, len + 1);
153 xstrndup(const char *s, size_t len)
156 size_t n = strlen(s);
161 new = xmalloc_inc(n, 1);