| | 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 |
| | 27 | void *calloc (); |
| | 28 | void *malloc (); |
| | 29 | void *realloc (); |
| | 30 | void 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 "xalloc.h" |
| | 44 | |
| | 45 | #ifndef EXIT_FAILURE |
| | 46 | # define EXIT_FAILURE 1 |
| | 47 | #endif |
| | 48 | |
| | 49 | #ifndef HAVE_MALLOC |
| | 50 | "you must run the autoconf test for a properly working malloc" |
| | 51 | #endif |
| | 52 | |
| | 53 | #ifndef HAVE_REALLOC |
| | 54 | "you must run the autoconf test for a properly working realloc" |
| | 55 | #endif |
| | 56 | |
| | 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; |
| | 60 | |
| | 61 | /* If non NULL, call this function when memory is exhausted. */ |
| | 62 | void (*xalloc_fail_func) PARAMS ((void)) = 0; |
| | 63 | |
| | 64 | /* If XALLOC_FAIL_FUNC is NULL, or does return, display this message |
| | 65 | before exiting when memory is exhausted. Goes through gettext. */ |
| | 66 | char const xalloc_msg_memory_exhausted[] = N_("memory exhausted"); |
| | 67 | |
| | 68 | void |
| | 69 | xalloc_die (void) |
| | 70 | { |
| | 71 | if (xalloc_fail_func) |
| | 72 | (*xalloc_fail_func) (); |
| | 73 | error (xalloc_exit_failure, 0, "%s", _(xalloc_msg_memory_exhausted)); |
| | 74 | /* The `noreturn' cannot be given to error, since it may return if |
| | 75 | its first argument is 0. To help compilers understand the |
| | 76 | xalloc_die does terminate, call exit. */ |
| | 77 | exit (EXIT_FAILURE); |
| | 78 | } |
| | 79 | |
| | 80 | /* Allocate N bytes of memory dynamically, with error checking. */ |
| | 81 | |
| | 82 | void * |
| | 83 | xmalloc (size_t n) |
| | 84 | { |
| | 85 | void *p; |
| | 86 | |
| | 87 | p = malloc (n); |
| | 88 | if (p == 0) |
| | 89 | xalloc_die (); |
| | 90 | return p; |
| | 91 | } |
| | 92 | |
| | 93 | /* Change the size of an allocated block of memory P to N bytes, |
| | 94 | with error checking. */ |
| | 95 | |
| | 96 | void * |
| | 97 | xrealloc (void *p, size_t n) |
| | 98 | { |
| | 99 | p = realloc (p, n); |
| | 100 | if (p == 0) |
| | 101 | xalloc_die (); |
| | 102 | return p; |
| | 103 | } |
| | 104 | |
| | 105 | /* Allocate memory for N elements of S bytes, with error checking. */ |
| | 106 | |
| | 107 | void * |
| | 108 | xcalloc (size_t n, size_t s) |
| | 109 | { |
| | 110 | void *p; |
| | 111 | |
| | 112 | p = calloc (n, s); |
| | 113 | if (p == 0) |
| | 114 | xalloc_die (); |
| | 115 | return p; |
| | 116 | } |
projects / bison.git / blame_incremental