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xmalloc.c
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/* xmalloc.c -- Allocation package that calls fatal() when out of memory
*
* Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "xmalloc.h"
#include "exitcodes.h"
EXPORTED void* xmalloc(unsigned size)
{
void *ret;
ret = malloc(size);
if (ret != NULL) return ret;
fatal("Virtual memory exhausted", EC_TEMPFAIL);
return 0; /*NOTREACHED*/
}
EXPORTED void* xzmalloc(unsigned size)
{
void *ret;
ret = malloc(size);
if (ret != NULL) {
memset(ret, 0, size);
return ret;
}
fatal("Virtual memory exhausted", EC_TEMPFAIL);
return 0; /*NOTREACHED*/
}
EXPORTED void *xcalloc(unsigned nmemb, unsigned size)
{
return xzmalloc(nmemb * size);
}
EXPORTED void *xrealloc (void* ptr, unsigned size)
{
void *ret;
/* xrealloc (NULL, size) behaves like xmalloc (size), as in ANSI C */
ret = (!ptr ? malloc (size) : realloc (ptr, size));
if (ret != NULL) return ret;
fatal("Virtual memory exhausted", EC_TEMPFAIL);
return 0; /*NOTREACHED*/
}
EXPORTED char *xstrdup(const char* str)
{
char *p = xmalloc(strlen(str)+1);
strcpy(p, str);
return p;
}
/* return a malloced "" if NULL is passed */
char *xstrdupsafe(const char *str)
{
return str ? xstrdup(str) : xstrdup("");
}
/* return NULL if NULL is passed */
EXPORTED char *xstrdupnull(const char *str)
{
return str ? xstrdup(str) : NULL;
}
EXPORTED char *xstrndup(const char* str, unsigned len)
{
char *p = xmalloc(len+1);
if (len) strncpy(p, str, len);
p[len] = '\0';
return p;
}
EXPORTED void *xmemdup(const void *ptr, unsigned size)
{
void *p = xmalloc(size);
memcpy(p, ptr, size);
return p;
}

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