1 /* xmalloc.c -- malloc with out of memory checking
2 Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
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)
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.
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. */
22 #include <sys/types.h>
39 # define EXIT_FAILURE 1
42 /* Prototypes for functions defined here. */
43 #if defined (__STDC__) && __STDC__
44 void *xmalloc (size_t n);
45 void *xcalloc (size_t n, size_t s);
46 void *xrealloc (void *p, size_t n);
49 #ifndef HAVE_DONE_WORKING_MALLOC_CHECK
50 #error you must run the autoconf test for a properly working malloc -- see malloc.m4
53 #ifndef HAVE_DONE_WORKING_REALLOC_CHECK
54 #error you must run the autoconf test for a properly working realloc -- see realloc.m4
57 /* Exit value when the requested amount of memory is not available.
58 The caller may set it to some other value. */
59 int xalloc_exit_failure = EXIT_FAILURE;
62 char *const xalloc_msg_memory_exhausted = N_("Memory exhausted");
65 void (*xalloc_fail_func) (int) = 0;
68 xalloc_fail (int size)
71 (*xalloc_fail_func) (size);
72 fprintf(stderr, "%s\n", xalloc_msg_memory_exhausted);
73 exit(xalloc_exit_failure);
76 /* Allocate N bytes of memory dynamically, with error checking. */
90 /* Allocate N bytes of memory dynamically, and set it all to zero. */
100 xalloc_fail ((int)n);
105 /* Change the size of an allocated block of memory P to N bytes,
107 If P is NULL, run xmalloc. */
120 /* Duplicate a string */
122 char *xstrdup(const char *s)
128 xalloc_fail ((int)strlen(s));
134 /* Allocate memory for N elements of S bytes, with error checking. */
148 #endif /* NOT_USED */