diff options
author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
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committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/iconv/srclib/xmalloc.c |
Fresh start
Diffstat (limited to 'jni/iconv/srclib/xmalloc.c')
-rw-r--r-- | jni/iconv/srclib/xmalloc.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/jni/iconv/srclib/xmalloc.c b/jni/iconv/srclib/xmalloc.c new file mode 100644 index 0000000..d2a1214 --- /dev/null +++ b/jni/iconv/srclib/xmalloc.c @@ -0,0 +1,128 @@ +/* xmalloc.c -- malloc with out of memory checking + Copyright (C) 1990-1996, 2000-2003, 2005-2007 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include "xalloc.h" + +#include <stdlib.h> + +#include "error.h" +#include "gettext.h" + +#define _(str) gettext (str) + + +/* 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; + +void +xalloc_die () +{ + error (xmalloc_exit_failure, 0, _("memory exhausted")); + /* The `noreturn' cannot be given to error, since it may return if + its first argument is 0. To help compilers understand the + xalloc_die does terminate, call exit. */ + exit (EXIT_FAILURE); +} + +static void * +fixup_null_alloc (size_t n) +{ + void *p; + + p = NULL; + if (n == 0) + p = malloc ((size_t) 1); + if (p == NULL) + xalloc_die (); + return p; +} + +/* Allocate N bytes of memory dynamically, with error checking. */ + +void * +xmalloc (size_t n) +{ + void *p; + + p = malloc (n); + if (p == NULL) + p = fixup_null_alloc (n); + return p; +} + +/* Allocate memory for NMEMB elements of SIZE bytes, with error checking. + SIZE must be > 0. */ + +void * +xnmalloc (size_t nmemb, size_t size) +{ + size_t n; + void *p; + + if (xalloc_oversized (nmemb, size)) + xalloc_die (); + n = nmemb * size; + p = malloc (n); + if (p == NULL) + p = fixup_null_alloc (n); + return p; +} + +/* Allocate SIZE bytes of memory dynamically, with error checking, + and zero it. */ + +void * +xzalloc (size_t size) +{ + void *p; + + p = xmalloc (size); + memset (p, 0, size); + return p; +} + +/* Allocate memory for N elements of S bytes, with error checking, + and zero it. */ + +void * +xcalloc (size_t n, size_t s) +{ + void *p; + + p = calloc (n, s); + if (p == NULL) + 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 (void *p, size_t n) +{ + if (p == NULL) + return xmalloc (n); + p = realloc (p, n); + if (p == NULL) + p = fixup_null_alloc (n); + return p; +} |