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glibc/locale/programs/xmalloc.c
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/* xmalloc.c -- malloc with out of memory checking | |
Copyright (C) 1990-2015 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
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, 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, see <http://www.gnu.org/licenses/>. */ | |
#ifdef HAVE_CONFIG_H | |
#include <config.h> | |
#endif | |
#define VOID void | |
#include <sys/types.h> | |
#if STDC_HEADERS || _LIBC | |
#include <stdlib.h> | |
static VOID *fixup_null_alloc (size_t n) __THROW; | |
VOID *xmalloc (size_t n) __THROW; | |
VOID *xcalloc (size_t n, size_t s) __THROW; | |
VOID *xrealloc (VOID *p, size_t n) __THROW; | |
#else | |
VOID *calloc (); | |
VOID *malloc (); | |
VOID *realloc (); | |
void free (); | |
#endif | |
#include <libintl.h> | |
#include "error.h" | |
#ifndef _ | |
# define _(str) gettext (str) | |
#endif | |
#ifndef EXIT_FAILURE | |
#define EXIT_FAILURE 4 | |
#endif | |
/* Exit value when the requested amount of memory is not available. | |
The caller may set it to some other value. */ | |
int xmalloc_exit_failure = EXIT_FAILURE; | |
static VOID * | |
fixup_null_alloc (size_t n) | |
{ | |
VOID *p; | |
p = 0; | |
if (n == 0) | |
p = malloc ((size_t) 1); | |
if (p == 0) | |
error (xmalloc_exit_failure, 0, _("memory exhausted")); | |
return p; | |
} | |
/* Allocate N bytes of memory dynamically, with error checking. */ | |
VOID * | |
xmalloc (size_t n) | |
{ | |
VOID *p; | |
p = malloc (n); | |
if (p == 0) | |
p = fixup_null_alloc (n); | |
return p; | |
} | |
/* Allocate memory for N elements of S bytes, with error checking. */ | |
VOID * | |
xcalloc (size_t n, size_t s) | |
{ | |
VOID *p; | |
p = calloc (n, s); | |
if (p == 0) | |
p = fixup_null_alloc (n); | |
return p; | |
} | |
/* Change the size of an allocated block of memory P to N bytes, | |
with error checking. | |
If P is NULL, run xmalloc. */ | |
VOID * | |
xrealloc (VOID *p, size_t n) | |
{ | |
if (p == 0) | |
return xmalloc (n); | |
p = realloc (p, n); | |
if (p == 0) | |
p = fixup_null_alloc (n); | |
return p; | |
} |