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30c14c31 RM |
1 | /* uselocale -- fetch and set the current per-thread locale |
2 | Copyright (C) 2002 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
19 | ||
20 | #include <locale.h> | |
21 | #include "localeinfo.h" | |
22 | ||
23 | #ifdef SHARED | |
24 | ||
25 | /* Switch the current thread's locale to DATASET. | |
26 | If DATASET is null, instead just return the current setting. | |
27 | The special value LC_GLOBAL_LOCALE is the initial setting | |
28 | for all threads, and means the thread uses the global | |
29 | setting controlled by `setlocale'. */ | |
30 | locale_t | |
31 | __uselocale (locale_t newloc) | |
32 | { | |
33 | if (newloc == NULL) | |
34 | { | |
35 | locale_t loc = __libc_tsd_get (LOCALE); | |
36 | return loc == &_nl_global_locale ? LC_GLOBAL_LOCALE : loc; | |
37 | } | |
38 | if (newloc == LC_GLOBAL_LOCALE) | |
39 | { | |
40 | __libc_tsd_set (LOCALE, &_nl_global_locale); | |
41 | return LC_GLOBAL_LOCALE; | |
42 | } | |
43 | __libc_tsd_set (LOCALE, newloc); | |
44 | return newloc; | |
45 | } | |
46 | weak_alias (__uselocale, uselocale) | |
47 | ||
48 | #else | |
49 | ||
50 | # warning uselocale not implemented for static linking yet | |
51 | ||
52 | #endif |