2 * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2015-2017 The strace developers.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #include "error_prints.h"
40 die_out_of_memory(void)
48 error_msg_and_die("Out of memory");
54 void *p = malloc(size);
63 xcalloc(size_t nmemb, size_t size)
65 void *p = calloc(nmemb, size);
73 #define HALF_SIZE_T (((size_t) 1) << (sizeof(size_t) * 4))
76 xreallocarray(void *ptr, size_t nmemb, size_t size)
78 size_t bytes = nmemb * size;
80 if ((nmemb | size) >= HALF_SIZE_T &&
81 size && bytes / size != nmemb)
84 void *p = realloc(ptr, bytes);
93 xgrowarray(void *const ptr, size_t *const nmemb, const size_t memb_size)
95 /* this is the same value as glibc DEFAULT_MXFAST */
96 enum { DEFAULT_ALLOC_SIZE = 64 * SIZEOF_LONG / 4 };
101 grow_memb = *nmemb ? 0 :
102 (DEFAULT_ALLOC_SIZE + memb_size - 1) / memb_size;
104 grow_memb = (*nmemb >> 1) + 1;
106 if ((*nmemb + grow_memb) < *nmemb)
111 return xreallocarray(ptr, *nmemb, memb_size);
115 xstrdup(const char *str)
120 char *p = strdup(str);
129 xstrndup(const char *str, size_t n)