1 /* Duplicate handle for selection of locales.
2 Copyright (C) 1997, 2000, 2001, 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library 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 GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #include <bits/libc-lock.h>
25 #include <localeinfo.h>
28 /* Lock for protecting global data. */
29 __libc_lock_define (extern , __libc_setlocale_lock attribute_hidden)
33 __duplocale (__locale_t dataset)
38 /* We modify global data. */
39 __libc_lock_lock (__libc_setlocale_lock);
42 result = (__locale_t) malloc (sizeof (struct __locale_struct));
45 /* Duplicate the names in a separate loop first so we can
46 bail out if strdup fails and not have touched usage_counts. */
47 for (cnt = 0; cnt < __LC_LAST; ++cnt)
50 if (dataset->__names[cnt] == _nl_C_name)
51 result->__names[cnt] = _nl_C_name;
54 result->__names[cnt] = __strdup (dataset->__names[cnt]);
55 if (result->__names[cnt] == NULL)
58 if (dataset->__names[cnt] != _nl_C_name)
59 free ((char *) dataset->__names[cnt]);
69 for (cnt = 0; cnt < __LC_LAST; ++cnt)
72 result->__locales[cnt] = dataset->__locales[cnt];
73 if (result->__locales[cnt]->usage_count < MAX_USAGE_COUNT)
74 ++result->__locales[cnt]->usage_count;
77 /* Update the special members. */
78 result->__ctype_b = dataset->__ctype_b;
79 result->__ctype_tolower = dataset->__ctype_tolower;
80 result->__ctype_toupper = dataset->__ctype_toupper;
84 __libc_lock_unlock (__libc_setlocale_lock);
88 weak_alias (__duplocale, duplocale)