* locale/setlocale.c (_nl_current_names): Variable moved ...

	* locale/localename.c (_nl_current_names): ... here, new file.
	Make it global, with attribute_hidden.
	* locale/localeinfo.h: Declare it.
	* locale/Makefile (aux): Add localename.
	* locale/localename.c (__current_locale_name): New function.
	* include/locale.h (__current_locale_name): Declare it.
	* intl/dcigettext.c (guess_category_value): Use that instead of
	calling setlocale.

	* locale/locale.h [__USE_GNU] (locale_t): New type alias of __locale_t.
	[__USE_GNU] (newlocale, duplocale, freelocale, uselocale): New decls.
	[__USE_GNU] (LC_GLOBAL_LOCALE): New macro.
	* locale/newlocale.c: Add alias to __ name.
	* locale/duplocale.c: Likewise.
	* locale/freelocale.c: Likewise.
	* locale/uselocale.c: New file.
	* locale/Makefile (routines): Add it.
	* locale/Versions (libc: GLIBC_2.3): New set.
	Add newlocale, duplocale, freelocale, uselocale.
	(libc: GLIBC_PRIVATE): Add __uselocale.

	* locale/localeinfo.h [SHARED]
	(_NL_CURRENT_LOCALE): New macro, defined to fetch a tsd value.
	(_NL_CURRENT_DATA): Define using that.
	(_NL_CURRENT, _NL_CURRENT_WSTR, _NL_CURRENT_WORD): Define using that.
	(_NL_CURRENT_DEFINE): Define to empty.
	[! SHARED]: Decls of _nl_current_CATEGORY and _nl_current
	conditionalized on this.
	* locale/xlocale.c (NL_C_INTIIALIZER): New macro,
	taking initializer of _nl_C_locobj.
	[SHARED] (_nl_global_locale): New variable, using that initializer.
	(_nl_C_locobj): Use new macro for initialzier.
	* locale/setlocale.c [! SHARED] (_nl_current): Conditionalize on this.
	[! SHARED] (CATEGORY_USED): New macro.
	[SHARED] (CATEGORY_USED, _nl_C): New macros.
	(setdata, setlocale): Use that macro instead of examining _nl_current.
	(setdata): Set the slot in _nl_global_locale.
	Conditionalize setting of _nl_current on [! SHARED].
	* locale/findlocale.c [SHARED] (_nl_C): Define as a macro instead of
	declaration as an extern.
	* locale/newlocale.c (__newlocale): Use _nl_C_locobj instead of _nl_C.

	* include/locale.h: Use libc_hidden_proto for setlocale.
	* locale/setlocale.c: Add libc_hidden_def.

	* locale/setlocale.c (free_mem): Use _NL_CURRENT_DATA.

1 files changed, 52 insertions, 0 deletions

diff --git a/locale/uselocale.c b/locale/uselocale.c
new file mode 100644
index 0000000000..1e819381de
--- /dev/null
+++ b/locale/uselocale.c
@@ -0,0 +1,52 @@
+/* uselocale -- fetch and set the current per-thread locale
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <locale.h>
+#include "localeinfo.h"
+
+#ifdef SHARED
+
+/* Switch the current thread's locale to DATASET.
+   If DATASET is null, instead just return the current setting.
+   The special value LC_GLOBAL_LOCALE is the initial setting
+   for all threads, and means the thread uses the global
+   setting controlled by `setlocale'.  */
+locale_t
+__uselocale (locale_t newloc)
+{
+  if (newloc == NULL)
+    {
+      locale_t loc = __libc_tsd_get (LOCALE);
+      return loc == &_nl_global_locale ? LC_GLOBAL_LOCALE : loc;
+    }
+  if (newloc == LC_GLOBAL_LOCALE)
+    {
+      __libc_tsd_set (LOCALE, &_nl_global_locale);
+      return LC_GLOBAL_LOCALE;
+    }
+  __libc_tsd_set (LOCALE, newloc);
+  return newloc;
+}
+weak_alias (__uselocale, uselocale)
+
+#else
+
+# warning uselocale not implemented for static linking yet
+
+#endif