Index: head/lib/libc/locale/xlocale_private.h =================================================================== --- head/lib/libc/locale/xlocale_private.h (revision 323276) +++ head/lib/libc/locale/xlocale_private.h (revision 323277) @@ -1,231 +1,252 @@ /*- * Copyright (c) 2011 The FreeBSD Foundation * All rights reserved. * * This software was developed by David Chisnall under sponsorship from * the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _XLOCALE_PRIVATE__H_ #define _XLOCALE_PRIVATE__H_ #include #include #include #include #include #include #include "setlocale.h" +/** + * The XLC_ values are indexes into the components array. They are defined in + * the same order as the LC_ values in locale.h, but without the LC_ALL zero + * value. Translating from LC_X to XLC_X is done by subtracting one. + * + * Any reordering of this enum should ensure that these invariants are not + * violated. + */ enum { XLC_COLLATE = 0, XLC_CTYPE, XLC_MONETARY, XLC_NUMERIC, XLC_TIME, XLC_MESSAGES, XLC_LAST }; +_Static_assert(XLC_LAST - XLC_COLLATE == 6, "XLC values should be contiguous"); +_Static_assert(XLC_COLLATE == LC_COLLATE - 1, + "XLC_COLLATE doesn't match the LC_COLLATE value."); +_Static_assert(XLC_CTYPE == LC_CTYPE - 1, + "XLC_CTYPE doesn't match the LC_CTYPE value."); +_Static_assert(XLC_MONETARY == LC_MONETARY - 1, + "XLC_MONETARY doesn't match the LC_MONETARY value."); +_Static_assert(XLC_NUMERIC == LC_NUMERIC - 1, + "XLC_NUMERIC doesn't match the LC_NUMERIC value."); +_Static_assert(XLC_TIME == LC_TIME - 1, + "XLC_TIME doesn't match the LC_TIME value."); +_Static_assert(XLC_MESSAGES == LC_MESSAGES - 1, + "XLC_MESSAGES doesn't match the LC_MESSAGES value."); /** * Header used for objects that are reference counted. Objects may optionally * have a destructor associated, which is responsible for destroying the * structure. Global / static versions of the structure should have no * destructor set - they can then have their reference counts manipulated as * normal, but will not do anything with them. * * The header stores a retain count - objects are assumed to have a reference * count of 1 when they are created, but the retain count is 0. When the * retain count is less than 0, they are freed. */ struct xlocale_refcounted { /** Number of references to this component. */ long retain_count; /** Function used to destroy this component, if one is required*/ void(*destructor)(void*); }; /** * Header for a locale component. All locale components must begin with this * header. */ struct xlocale_component { struct xlocale_refcounted header; /** Name of the locale used for this component. */ char locale[ENCODING_LEN+1]; }; /** * xlocale structure, stores per-thread locale information. */ struct _xlocale { struct xlocale_refcounted header; /** Components for the locale. */ struct xlocale_component *components[XLC_LAST]; /** Flag indicating if components[XLC_MONETARY] has changed since the * last call to localeconv_l() with this locale. */ int monetary_locale_changed; /** Flag indicating whether this locale is actually using a locale for * LC_MONETARY (1), or if it should use the C default instead (0). */ int using_monetary_locale; /** Flag indicating if components[XLC_NUMERIC] has changed since the * last call to localeconv_l() with this locale. */ int numeric_locale_changed; /** Flag indicating whether this locale is actually using a locale for * LC_NUMERIC (1), or if it should use the C default instead (0). */ int using_numeric_locale; /** Flag indicating whether this locale is actually using a locale for * LC_TIME (1), or if it should use the C default instead (0). */ int using_time_locale; /** Flag indicating whether this locale is actually using a locale for * LC_MESSAGES (1), or if it should use the C default instead (0). */ int using_messages_locale; /** The structure to be returned from localeconv_l() for this locale. */ struct lconv lconv; /** Persistent state used by mblen() calls. */ __mbstate_t mblen; /** Persistent state used by mbrlen() calls. */ __mbstate_t mbrlen; /** Persistent state used by mbrtoc16() calls. */ __mbstate_t mbrtoc16; /** Persistent state used by mbrtoc32() calls. */ __mbstate_t mbrtoc32; /** Persistent state used by mbrtowc() calls. */ __mbstate_t mbrtowc; /** Persistent state used by mbsnrtowcs() calls. */ __mbstate_t mbsnrtowcs; /** Persistent state used by mbsrtowcs() calls. */ __mbstate_t mbsrtowcs; /** Persistent state used by mbtowc() calls. */ __mbstate_t mbtowc; /** Persistent state used by c16rtomb() calls. */ __mbstate_t c16rtomb; /** Persistent state used by c32rtomb() calls. */ __mbstate_t c32rtomb; /** Persistent state used by wcrtomb() calls. */ __mbstate_t wcrtomb; /** Persistent state used by wcsnrtombs() calls. */ __mbstate_t wcsnrtombs; /** Persistent state used by wcsrtombs() calls. */ __mbstate_t wcsrtombs; /** Persistent state used by wctomb() calls. */ __mbstate_t wctomb; /** Buffer used by nl_langinfo_l() */ char *csym; }; /** * Increments the reference count of a reference-counted structure. */ __attribute__((unused)) static void* xlocale_retain(void *val) { struct xlocale_refcounted *obj = val; atomic_add_long(&(obj->retain_count), 1); return (val); } /** * Decrements the reference count of a reference-counted structure, freeing it * if this is the last reference, calling its destructor if it has one. */ __attribute__((unused)) static void xlocale_release(void *val) { struct xlocale_refcounted *obj = val; long count; count = atomic_fetchadd_long(&(obj->retain_count), -1) - 1; if (count < 0 && obj->destructor != NULL) obj->destructor(obj); } /** * Load functions. Each takes the name of a locale and a pointer to the data * to be initialised as arguments. Two special values are allowed for the */ extern void* __collate_load(const char*, locale_t); extern void* __ctype_load(const char*, locale_t); extern void* __messages_load(const char*, locale_t); extern void* __monetary_load(const char*, locale_t); extern void* __numeric_load(const char*, locale_t); extern void* __time_load(const char*, locale_t); extern struct _xlocale __xlocale_global_locale; extern struct _xlocale __xlocale_C_locale; /** * Caches the rune table in TLS for fast access. */ void __set_thread_rune_locale(locale_t loc); /** * Flag indicating whether a per-thread locale has been set. If no per-thread * locale has ever been set, then we always use the global locale. */ extern int __has_thread_locale; #ifndef __NO_TLS /** * The per-thread locale. Avoids the need to use pthread lookup functions when * getting the per-thread locale. */ extern _Thread_local locale_t __thread_locale; /** * Returns the current locale for this thread, or the global locale if none is * set. The caller does not have to free the locale. The return value from * this call is not guaranteed to remain valid after the locale changes. As * such, this should only be called within libc functions. */ static inline locale_t __get_locale(void) { if (!__has_thread_locale) { return (&__xlocale_global_locale); } return (__thread_locale ? __thread_locale : &__xlocale_global_locale); } #else locale_t __get_locale(void); #endif /** * Two magic values are allowed for locale_t objects. NULL and -1. This * function maps those to the real locales that they represent. */ static inline locale_t get_real_locale(locale_t locale) { switch ((intptr_t)locale) { case 0: return (&__xlocale_C_locale); case -1: return (&__xlocale_global_locale); default: return (locale); } } /** * Replace a placeholder locale with the real global or thread-local locale_t. */ #define FIX_LOCALE(l) (l = get_real_locale(l)) #endif