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/*
* memory wrappers
*
* Copyright (c) Artem Bityutskiy, 2007, 2008
* Copyright 2001, 2002 Red Hat, Inc.
* 2001 David A. Schleef <ds@lineo.com>
* 2002 Axis Communications AB
* 2001, 2002 Erik Andersen <andersen@codepoet.org>
* 2004 University of Szeged, Hungary
* 2006 KaiGai Kohei <kaigai@ak.jp.nec.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __MTD_UTILS_XALLOC_H__
#define __MTD_UTILS_XALLOC_H__
#include <stdlib.h>
#include <string.h>
/*
* Mark these functions as unused so that gcc does not emit warnings
* when people include this header but don't use every function.
*/
__attribute__((unused))
static void *xmalloc(size_t size)
{
void *ptr = malloc(size);
if (ptr == NULL && size != 0)
sys_errmsg_die("malloc(%zu) failed", size);
return ptr;
}
__attribute__((unused))
static void *xcalloc(size_t nmemb, size_t size)
{
void *ptr = calloc(nmemb, size);
if (ptr == NULL && nmemb != 0 && size != 0)
sys_errmsg_die("calloc(%zu, %zu) failed", nmemb, size);
return ptr;
}
__attribute__((unused))
static void *xzalloc(size_t size)
{
return xcalloc(1, size);
}
__attribute__((unused))
static void *xrealloc(void *ptr, size_t size)
{
ptr = realloc(ptr, size);
if (ptr == NULL && size != 0)
sys_errmsg_die("realloc(%p, %zu) failed", ptr, size);
return ptr;
}
__attribute__((unused))
static char *xstrdup(const char *s)
{
char *t;
if (s == NULL)
return NULL;
t = strdup(s);
if (t == NULL)
sys_errmsg_die("strdup(%p) failed", s);
return t;
}
#ifdef _GNU_SOURCE
#include <stdarg.h>
__attribute__((unused))
static int xasprintf(char **strp, const char *fmt, ...)
{
int cnt;
va_list ap;
va_start(ap, fmt);
cnt = vasprintf(strp, fmt, ap);
va_end(ap);
if (cnt == -1)
sys_errmsg_die("asprintf(...) failed");
return cnt;
}
#endif
#endif /* !__MTD_UTILS_XALLOC_H__ */
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