* 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, 28 insertions, 18 deletions

diff --git a/locale/setlocale.c b/locale/setlocale.c
index 87573024d3..50963d152c 100644
--- a/locale/setlocale.c
+++ b/locale/setlocale.c
@@ -27,6 +27,8 @@
 
 #include "localeinfo.h"
 
+#ifndef SHARED
+
 /* For each category declare two external variables (with weak references):
      extern const struct locale_data *_nl_current_CATEGORY;
    This points to the current locale's in-core data for CATEGORY.
@@ -35,6 +37,8 @@
    Both are weak references; if &_nl_current_CATEGORY is zero,
    then nothing is using the locale data.  */
 #define DEFINE_CATEGORY(category, category_name, items, a) \
+weak_extern (_nl_current_##category)					      \
+weak_extern (_nl_C_##category)						      \
 extern struct locale_data *_nl_current_##category;			      \
 extern struct locale_data _nl_C_##category;
 #include "categories.def"
@@ -63,6 +67,19 @@ struct locale_data *const _nl_C[] attribute_hidden =
 #undef	DEFINE_CATEGORY
   };
 
+# define CATEGORY_USED(category)	(_nl_current[category] != NULL)
+
+#else
+
+/* The shared library always loads all the categories,
+   and the current global settings are kept in _nl_global_locale.  */
+
+# define _nl_C		(_nl_C_locobj.__locales)
+
+# define CATEGORY_USED(category)	(1)
+
+#endif
+
 
 /* Define an array of category names (also the environment variable names),
    indexed by integral category.  */
@@ -105,18 +122,6 @@ static void (*const _nl_category_postload[]) (void) =
   };
 
 
-/* Name of current locale for each individual category.
-   Each is malloc'd unless it is nl_C_name.  */
-static const char *_nl_current_names[] =
-  {
-#define DEFINE_CATEGORY(category, category_name, items, a) \
-    [category] = _nl_C_name,
-#include "categories.def"
-#undef	DEFINE_CATEGORY
-    [LC_ALL] = _nl_C_name		/* For LC_ALL.  */
-  };
-
-
 /* Lock for protecting global data.  */
 __libc_lock_define_initialized (, __libc_setlocale_lock attribute_hidden)
 
@@ -200,20 +205,24 @@ setname (int category, const char *name)
   _nl_current_names[category] = name;
 }
 
-
 /* Put DATA in *_nl_current[CATEGORY].  */
 static inline void
 setdata (int category, struct locale_data *data)
 {
-  if (_nl_current[category] != NULL)
+  if (CATEGORY_USED (category))
     {
+#ifdef SHARED
+      _nl_global_locale.__locales[category] = data;
+#endif
+#ifndef SHARED
+# warning when uselocale exists it will need the line above too
       *_nl_current[category] = data;
+#endif
       if (_nl_category_postload[category])
 	(*_nl_category_postload[category]) ();
     }
 }
 
-
 char *
 setlocale (int category, const char *locale)
 {
@@ -371,7 +380,7 @@ setlocale (int category, const char *locale)
       /* Protect global data.  */
       __libc_lock_lock (__libc_setlocale_lock);
 
-      if (_nl_current[category] != NULL)
+      if (CATEGORY_USED (category))
 	{
 	  /* Only actually load the data if anything will use it.  */
 	  newdata = _nl_find_locale (locale_path, locale_path_len, category,
@@ -409,7 +418,7 @@ setlocale (int category, const char *locale)
 	}
       else
 	{
-	  if (_nl_current[category] != NULL)
+	  if (CATEGORY_USED (category))
 	    setdata (category, newdata);
 
 	  setname (category, newname[0]);
@@ -429,6 +438,7 @@ setlocale (int category, const char *locale)
       return (char *) newname[0];
     }
 }
+libc_hidden_def (setlocale)
 
 static void __attribute__ ((unused))
 free_mem (void)
@@ -438,7 +448,7 @@ free_mem (void)
   for (category = 0; category < __LC_LAST; ++category)
     if (category != LC_ALL)
       {
-	struct locale_data *here = *_nl_current[category];
+	struct locale_data *here = _NL_CURRENT_DATA (category);
 	struct loaded_l10nfile *runp = _nl_locale_file_list[category];
 
 	/* If this category is already "C" don't do anything.  */