1/* xmalloc.c -- malloc with out of memory checking 2 Copyright (C) 1990-1999, 2000, 2002 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software Foundation, 16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 17 18#if HAVE_CONFIG_H 19# include <config.h> 20#endif 21 22#include <sys/types.h> 23 24#if STDC_HEADERS 25# include <stdlib.h> 26#else 27void *calloc (); 28void *malloc (); 29void *realloc (); 30void free (); 31#endif 32 33#if ENABLE_NLS 34# include <libintl.h> 35# define _(Text) gettext (Text) 36#else 37# define textdomain(Domain) 38# define _(Text) Text 39#endif 40#define N_(Text) Text 41 42#include "error.h" 43#include "exitfail.h" 44#include "xalloc.h" 45 46#ifndef EXIT_FAILURE 47# define EXIT_FAILURE 1 48#endif 49 50#ifndef HAVE_DONE_WORKING_MALLOC_CHECK 51"you must run the autoconf test for a properly working malloc -- see malloc.m4" 52#endif 53 54#ifndef HAVE_DONE_WORKING_REALLOC_CHECK 55"you must run the autoconf test for a properly working realloc --see realloc.m4" 56#endif 57 58/* If non NULL, call this function when memory is exhausted. */ 59void (*xalloc_fail_func) PARAMS ((void)) = 0; 60 61/* If XALLOC_FAIL_FUNC is NULL, or does return, display this message 62 before exiting when memory is exhausted. Goes through gettext. */ 63char const xalloc_msg_memory_exhausted[] = N_("memory exhausted"); 64 65void 66xalloc_die (void) 67{ 68 if (xalloc_fail_func) 69 (*xalloc_fail_func) (); 70 error (exit_failure, 0, "%s", _(xalloc_msg_memory_exhausted)); 71 /* The `noreturn' cannot be given to error, since it may return if 72 its first argument is 0. To help compilers understand the 73 xalloc_die does terminate, call exit. */ 74 exit (EXIT_FAILURE); 75} 76 77/* Allocate N bytes of memory dynamically, with error checking. */ 78 79void * 80xmalloc (size_t n) 81{ 82 void *p; 83 84 p = malloc (n); 85 if (p == 0) 86 xalloc_die (); 87 return p; 88} 89 90/* Change the size of an allocated block of memory P to N bytes, 91 with error checking. */ 92 93void * 94xrealloc (void *p, size_t n) 95{ 96 p = realloc (p, n); 97 if (p == 0) 98 xalloc_die (); 99 return p; 100} 101 102/* Allocate memory for N elements of S bytes, with error checking. */ 103 104void * 105xcalloc (size_t n, size_t s) 106{ 107 void *p; 108 109 p = calloc (n, s); 110 if (p == 0) 111 xalloc_die (); 112 return p; 113} 114