Mercurial > hg > octave-kai > gnulib-hg
annotate lib/xmalloc.c @ 4739:04758f7475fd
Merge changes from glibc.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Fri, 26 Sep 2003 07:35:01 +0000 |
| parents | 4753d416bf20 |
| children | d1dc5d9bf1ba |
| rev | line source |
|---|---|
| 9 | 1 /* xmalloc.c -- malloc with out of memory checking |
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2 |
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3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
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4 1999, 2000, 2002, 2003 Free Software Foundation, Inc. |
| 9 | 5 |
| 6 This program is free software; you can redistribute it and/or modify | |
| 7 it under the terms of the GNU General Public License as published by | |
| 8 the Free Software Foundation; either version 2, or (at your option) | |
| 9 any later version. | |
| 10 | |
| 11 This program is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 GNU General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
|
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17 along with this program; if not, write to the Free Software Foundation, |
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18 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 9 | 19 |
| 739 | 20 #if HAVE_CONFIG_H |
| 653 | 21 # include <config.h> |
| 399 | 22 #endif |
| 23 | |
| 4691 | 24 #include "xalloc.h" |
| 399 | 25 |
| 4691 | 26 #include <stdlib.h> |
| 9 | 27 |
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28 #include "gettext.h" |
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29 #define _(msgid) gettext (msgid) |
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30 #define N_(msgid) msgid |
| 399 | 31 |
| 739 | 32 #include "error.h" |
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33 #include "exit.h" |
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34 #include "exitfail.h" |
| 739 | 35 |
| 4000 | 36 /* The following tests require AC_PREREQ(2.54). */ |
| 37 | |
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38 #ifndef HAVE_MALLOC |
| 4000 | 39 "you must run the autoconf test for a GNU libc compatible malloc" |
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40 #endif |
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41 |
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42 #ifndef HAVE_REALLOC |
| 4000 | 43 "you must run the autoconf test for a GNU libc compatible realloc" |
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44 #endif |
| 739 | 45 |
| 1604 | 46 /* If non NULL, call this function when memory is exhausted. */ |
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47 void (*xalloc_fail_func) (void) = 0; |
| 399 | 48 |
| 1604 | 49 /* If XALLOC_FAIL_FUNC is NULL, or does return, display this message |
| 50 before exiting when memory is exhausted. Goes through gettext. */ | |
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51 char const xalloc_msg_memory_exhausted[] = N_("memory exhausted"); |
| 399 | 52 |
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53 void |
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54 xalloc_die (void) |
| 399 | 55 { |
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56 if (xalloc_fail_func) |
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57 (*xalloc_fail_func) (); |
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58 error (exit_failure, 0, "%s", _(xalloc_msg_memory_exhausted)); |
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59 /* The `noreturn' cannot be given to error, since it may return if |
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60 its first argument is 0. To help compilers understand the |
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61 xalloc_die does terminate, call exit. */ |
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62 exit (EXIT_FAILURE); |
| 399 | 63 } |
| 9 | 64 |
| 65 /* Allocate N bytes of memory dynamically, with error checking. */ | |
| 66 | |
| 1071 | 67 void * |
| 1557 | 68 xmalloc (size_t n) |
| 9 | 69 { |
| 1071 | 70 void *p; |
| 9 | 71 |
| 72 p = malloc (n); | |
| 73 if (p == 0) | |
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74 xalloc_die (); |
| 9 | 75 return p; |
| 76 } | |
| 77 | |
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78 /* Change the size of an allocated block of memory P to N bytes, |
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79 with error checking. */ |
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80 |
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81 void * |
| 1557 | 82 xrealloc (void *p, size_t n) |
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83 { |
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84 p = realloc (p, n); |
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85 if (p == 0) |
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86 xalloc_die (); |
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87 return p; |
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88 } |
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89 |
| 739 | 90 /* Allocate memory for N elements of S bytes, with error checking. */ |
| 91 | |
| 1071 | 92 void * |
| 1557 | 93 xcalloc (size_t n, size_t s) |
| 739 | 94 { |
| 1071 | 95 void *p; |
| 739 | 96 |
| 97 p = calloc (n, s); | |
| 98 if (p == 0) | |
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99 xalloc_die (); |
| 739 | 100 return p; |
| 101 } |