/* xmalloc.c -- malloc with out of memory checking Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 99 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #if HAVE_CONFIG_H # include #endif #if __STDC__ # define VOID void #else # define VOID char #endif #include #if STDC_HEADERS # include #else VOID *calloc (); VOID *malloc (); VOID *realloc (); void free (); #endif #if ENABLE_NLS # include # define _(Text) gettext (Text) #else # define textdomain(Domain) # define _(Text) Text #endif #include "error.h" #ifndef EXIT_FAILURE # define EXIT_FAILURE 1 #endif /* Prototypes for functions defined here. */ #if defined (__STDC__) && __STDC__ static VOID *fixup_null_alloc (size_t n); VOID *xmalloc (size_t n); VOID *xcalloc (size_t n, size_t s); VOID *xrealloc (VOID * p, size_t n); char *xstrdup (char *p); #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; #if __STDC__ && (HAVE_VPRINTF || HAVE_DOPRNT) void error (int, int, const char *, ...); #else void error (); #endif 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; } /* Make a copy of a string in a newly allocated block of memory. */ char * xstrdup (str) char *str; { VOID *p; p = xmalloc (strlen (str) + 1); strcpy (p, str); return p; }