From cf684340ce723e2ec50e8f82d8c10947360518d2 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Mon, 2 Sep 2002 07:09:08 +0000
Subject: * ctype/ctype.h (__ctype_b, __ctype_toupper, __ctype_tolower):

	Variable declarations removed.
	(__ctype_b_loc, __ctype_toupper_loc, __ctype_tolower_loc): Declare
	these functions to replace them.
	(__isctype, tolower, toupper, _tolower, _toupper): Use those accessor
	functions plus an indirection rather than the old global variables.
	* include/ctype.h (__isctype, tolower, _tolower, toupper, _toupper):
	Macros removed.
	(__ctype_b_loc, __ctype_toupper_loc, __ctype_tolower_loc): New extern
	inline functions.
	* ctype/ctype-info.c: Revert last reversion back the other way.
	Define tsd vars CTYPE_B, CTYPE_TOLOWER, CTYPE_TOUPPER.
	Define real function versions of include/ctype.h inlines here.
	* ctype/Versions (libc: GLIBC_2.3): Add __ctype_b_loc,
	__ctype_tolower_loc, __ctype_toupper_loc.
	* locale/lc-ctype.c: Revert last reversion back the other way.
	(_nl_postload_ctype): If current thread uses the global locale,
	update its tsd vars.
	* locale/uselocale.c (__uselocale): Update tsd vars from new locale.
	* hurd/hurd/threadvar.h (enum __hurd_threadvar_index): Add CTYPE_B,
	CTYPE_TOLOWER, CTYPE_TOUPPER.

	* sysdeps/generic/bits/libc-tsd.h (__libc_tsd_address): New macro.
	* sysdeps/mach/hurd/bits/libc-tsd.h (__libc_tsd_address): Renamed
	from __libc_tsd_threadvar_location.
	(__libc_tsd_set, __libc_tsd_get): Update uses.
---
 include/ctype.h | 77 +++++++++++++++++++++++++++++++++++----------------------
 1 file changed, 48 insertions(+), 29 deletions(-)

(limited to 'include/ctype.h')

diff --git a/include/ctype.h b/include/ctype.h
index b58306dd28..ca3c3dd856 100644
--- a/include/ctype.h
+++ b/include/ctype.h
@@ -2,39 +2,58 @@
 
 extern int __isctype (int __c, int __mask);
 
-# include <ctype/ctype.h>
-
 # ifndef NOT_IN_libc
 
-/* The optimized macros are not defined for users because they can't see
-   the thread-local locale state.  For inside libc, define them using the
-   _NL_CURRENT accessors.  We don't use _NL_CURRENT_LOCALE->__ctype_b here
-   because we want to cause a link-time ref to _nl_current_LC_CTYPE under
+/* These accessors are used by the optimized macros to find the
+   thread-local cache of ctype information from the current thread's
+   locale.  For inside libc, define them as inlines using the _NL_CURRENT
+   accessors.  We don't use _NL_CURRENT_LOCALE->__ctype_b here because we
+   want to cause a link-time ref to _nl_current_LC_CTYPE under
    NL_CURRENT_INDIRECT.  */
 
 #  include "../locale/localeinfo.h"
-#  ifndef __NO_CTYPE
-#   undef __isctype
-#   define __isctype(c, type) \
-     (((uint16_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS) + 128) \
-      [(int) (c)] & (uint16_t) type)
-
-#   undef tolower
-#   define tolower(c) \
-      __tobody (c, tolower, \
-		(uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOLOWER) + 128, \
-		(c))
-#   undef _tolower
-#   define _tolower(c) tolower (c)
-#   undef toupper
-#   define toupper(c) \
-      __tobody (c, toupper, \
-		(uint32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128, \
-		(c))
-#   undef _toupper
-#   define _toupper(c) toupper (c)
-
-#  endif /* Not __NO_CTYPE.  */
-# endif	/* _LIBC_REENTRANT.  */
+#  include <bits/libc-tsd.h>
+
+#  ifndef CTYPE_EXTERN_INLINE	/* Used by ctype/ctype-info.c, which see.  */
+#   define CTYPE_EXTERN_INLINE extern inline
+#  endif
+
+__libc_tsd_define (extern, CTYPE_B)
+__libc_tsd_define (extern, CTYPE_TOUPPER)
+__libc_tsd_define (extern, CTYPE_TOLOWER)
+
+CTYPE_EXTERN_INLINE const uint16_t ** __attribute__ ((const))
+__ctype_b_loc (void)
+{
+  const uint16_t **tablep =
+    (const uint16_t **) __libc_tsd_address (CTYPE_B);
+  if (__builtin_expect (*tablep == NULL, 0))
+    *tablep = (const uint16_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_CLASS) + 128;
+  return tablep;
+}
+
+CTYPE_EXTERN_INLINE const int32_t ** __attribute__ ((const))
+__ctype_toupper_loc (void)
+{
+  const int32_t **tablep =
+    (const int32_t **) __libc_tsd_address (CTYPE_TOUPPER);
+  if (__builtin_expect (*tablep == NULL, 0))
+    *tablep = ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128);
+  return tablep;
+}
+
+CTYPE_EXTERN_INLINE const int32_t ** __attribute__ ((const))
+__ctype_tolower_loc (void)
+{
+  const int32_t **tablep =
+    (const int32_t **) __libc_tsd_address (CTYPE_TOLOWER);
+  if (__builtin_expect (*tablep == NULL, 0))
+    *tablep = ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOLOWER) + 128);
+  return tablep;
+}
+
+# endif	/* Not NOT_IN_libc.  */
+
+# include <ctype/ctype.h>
 
 #endif /* ctype.h */
-- 
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