82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
|
/* xmalloc.c -- malloc with out of memory checking
|
||
|
|
Copyright (C) 1990, 1991, 1993 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
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, 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. */
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
#include <config.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __STDC__
|
||
|
|
#define VOID void
|
||
|
|
#else
|
||
|
|
#define VOID char
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#if STDC_HEADERS
|
||
|
|
#include <stdlib.h>
|
||
|
|
#else
|
||
|
|
VOID *malloc ();
|
||
|
|
VOID *realloc ();
|
||
|
|
void free ();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __STDC__ && defined (HAVE_VPRINTF)
|
||
|
|
void error (int, int, char const *, ...);
|
||
|
|
#else
|
||
|
|
void error ();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Allocate N bytes of memory dynamically, with error checking. */
|
||
|
|
|
||
|
|
VOID *
|
||
|
|
xmalloc (n)
|
||
|
|
size_t n;
|
||
|
|
{
|
||
|
|
VOID *p;
|
||
|
|
|
||
|
|
p = malloc (n);
|
||
|
|
if (p == 0)
|
||
|
|
/* Must exit with 2 for `cmp'. */
|
||
|
|
error (2, 0, "memory exhausted");
|
||
|
|
return p;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Change the size of an allocated block of memory P to N bytes,
|
||
|
|
with error checking.
|
||
|
|
If P is NULL, run xmalloc.
|
||
|
|
If N is 0, run free and return NULL. */
|
||
|
|
|
||
|
|
VOID *
|
||
|
|
xrealloc (p, n)
|
||
|
|
VOID *p;
|
||
|
|
size_t n;
|
||
|
|
{
|
||
|
|
if (p == 0)
|
||
|
|
return xmalloc (n);
|
||
|
|
if (n == 0)
|
||
|
|
{
|
||
|
|
free (p);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
p = realloc (p, n);
|
||
|
|
if (p == 0)
|
||
|
|
/* Must exit with 2 for `cmp'. */
|
||
|
|
error (2, 0, "memory exhausted");
|
||
|
|
return p;
|
||
|
|
}
|