| /* xmalloc.c -- malloc with out of memory checking |
| Copyright (C) 1990-2014 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 (n) |
| 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 (n) |
| 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 (n, s) |
| size_t n, 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 (p, n) |
| 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; |
| } |