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xmalloc.h
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xmalloc.h
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/* xmalloc.h -- 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.
*/
#ifndef INCLUDED_XMALLOC_H
#define INCLUDED_XMALLOC_H
/* for size_t */
#include <stdio.h>
/* for free() */
#include <stdlib.h>
extern void *xmalloc (size_t size);
extern void *xzmalloc (size_t size);
extern void *xcalloc (size_t nmemb, size_t size);
extern void *xrealloc (void *ptr, size_t size);
extern char *xstrdup (const char *str);
extern char *xstrdupnull (const char *str);
extern char *xstrdupsafe (const char *str);
extern char *xstrndup (const char *str, size_t len);
extern void *xmemdup (const void *ptr, size_t size);
// this can be used on lvalues (e.g. function returns)
#define xfree(ptr) do { \
void *x = ptr; if (x) { free(x); } \
} while (0)
// NOTE - can not be used on things that can't be lvalues :)
#define xzfree(ptr) do { \
if (ptr) { free(ptr); ptr = NULL; } \
} while (0)
/* Functions using xmalloc.h must provide a function called fatal() conforming
to the following: */
extern void fatal(const char *fatal_message, int fatal_code)
__attribute__ ((noreturn));
#endif /* INCLUDED_XMALLOC_H */

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