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/* eurephia_nullsafe.c
*
* standard C string functions, which is made NULL safe by checking
* if input value is NULL before performing the action.
*
* This version is modified to work outside the eurephia project.
*
* GPLv2 only - Copyright (C) 2009
* David Sommerseth <dazo@users.sourceforge.net>
*
* 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; version 2
* of the License.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/**
* @file eurephia_nullsafe.c
* @author David Sommerseth <dazo@users.sourceforge.net>
* @date 2009-09-07
*
* @brief standard C string functions, which is made NULL safe by checking
* if input value is NULL before performing the action.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <log.h>
#if __GNUC__ >= 3
#define __malloc__ __attribute__((malloc))
#else /* If not GCC 3 or newer, disable optimisations */
#define __malloc__
#endif
/**
* This replaces the use of malloc() and memset(). This function uses calloc
* internally, which results in the memory region being zero'd by the kernel
* on memory allocation.
*
* @param log Log context
* @param sz size of the memory region being allocated
*
* @return Returns a void pointer to the memory region on success, otherwise NULL
*/
__malloc__ void *malloc_nullsafe(LogContext *log, size_t sz) {
void *buf = NULL;
buf = calloc(1, sz); /* Using calloc, also gives a zero'd memory region */
if( !buf ) {
writelog(log, LOG_EMERG, "Could not allocate memory region for %ld bytes", sz);
exit(9);
}
return buf;
}
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