d915a14ef0
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
255 lines
8.8 KiB
C
255 lines
8.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2011 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by David Chisnall under sponsorship from
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* the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _XLOCALE_PRIVATE__H_
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#define _XLOCALE_PRIVATE__H_
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#include <xlocale.h>
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#include <locale.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <machine/atomic.h>
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#include "setlocale.h"
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/**
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* The XLC_ values are indexes into the components array. They are defined in
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* the same order as the LC_ values in locale.h, but without the LC_ALL zero
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* value. Translating from LC_X to XLC_X is done by subtracting one.
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*
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* Any reordering of this enum should ensure that these invariants are not
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* violated.
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*/
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enum {
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XLC_COLLATE = 0,
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XLC_CTYPE,
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XLC_MONETARY,
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XLC_NUMERIC,
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XLC_TIME,
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XLC_MESSAGES,
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XLC_LAST
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};
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_Static_assert(XLC_LAST - XLC_COLLATE == 6, "XLC values should be contiguous");
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_Static_assert(XLC_COLLATE == LC_COLLATE - 1,
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"XLC_COLLATE doesn't match the LC_COLLATE value.");
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_Static_assert(XLC_CTYPE == LC_CTYPE - 1,
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"XLC_CTYPE doesn't match the LC_CTYPE value.");
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_Static_assert(XLC_MONETARY == LC_MONETARY - 1,
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"XLC_MONETARY doesn't match the LC_MONETARY value.");
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_Static_assert(XLC_NUMERIC == LC_NUMERIC - 1,
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"XLC_NUMERIC doesn't match the LC_NUMERIC value.");
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_Static_assert(XLC_TIME == LC_TIME - 1,
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"XLC_TIME doesn't match the LC_TIME value.");
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_Static_assert(XLC_MESSAGES == LC_MESSAGES - 1,
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"XLC_MESSAGES doesn't match the LC_MESSAGES value.");
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/**
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* Header used for objects that are reference counted. Objects may optionally
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* have a destructor associated, which is responsible for destroying the
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* structure. Global / static versions of the structure should have no
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* destructor set - they can then have their reference counts manipulated as
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* normal, but will not do anything with them.
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*
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* The header stores a retain count - objects are assumed to have a reference
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* count of 1 when they are created, but the retain count is 0. When the
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* retain count is less than 0, they are freed.
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*/
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struct xlocale_refcounted {
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/** Number of references to this component. */
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long retain_count;
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/** Function used to destroy this component, if one is required*/
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void(*destructor)(void*);
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};
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/**
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* Header for a locale component. All locale components must begin with this
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* header.
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*/
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struct xlocale_component {
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struct xlocale_refcounted header;
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/** Name of the locale used for this component. */
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char locale[ENCODING_LEN+1];
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};
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/**
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* xlocale structure, stores per-thread locale information.
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*/
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struct _xlocale {
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struct xlocale_refcounted header;
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/** Components for the locale. */
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struct xlocale_component *components[XLC_LAST];
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/** Flag indicating if components[XLC_MONETARY] has changed since the
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* last call to localeconv_l() with this locale. */
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int monetary_locale_changed;
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/** Flag indicating whether this locale is actually using a locale for
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* LC_MONETARY (1), or if it should use the C default instead (0). */
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int using_monetary_locale;
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/** Flag indicating if components[XLC_NUMERIC] has changed since the
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* last call to localeconv_l() with this locale. */
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int numeric_locale_changed;
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/** Flag indicating whether this locale is actually using a locale for
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* LC_NUMERIC (1), or if it should use the C default instead (0). */
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int using_numeric_locale;
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/** Flag indicating whether this locale is actually using a locale for
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* LC_TIME (1), or if it should use the C default instead (0). */
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int using_time_locale;
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/** Flag indicating whether this locale is actually using a locale for
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* LC_MESSAGES (1), or if it should use the C default instead (0). */
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int using_messages_locale;
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/** The structure to be returned from localeconv_l() for this locale. */
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struct lconv lconv;
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/** Persistent state used by mblen() calls. */
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__mbstate_t mblen;
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/** Persistent state used by mbrlen() calls. */
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__mbstate_t mbrlen;
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/** Persistent state used by mbrtoc16() calls. */
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__mbstate_t mbrtoc16;
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/** Persistent state used by mbrtoc32() calls. */
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__mbstate_t mbrtoc32;
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/** Persistent state used by mbrtowc() calls. */
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__mbstate_t mbrtowc;
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/** Persistent state used by mbsnrtowcs() calls. */
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__mbstate_t mbsnrtowcs;
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/** Persistent state used by mbsrtowcs() calls. */
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__mbstate_t mbsrtowcs;
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/** Persistent state used by mbtowc() calls. */
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__mbstate_t mbtowc;
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/** Persistent state used by c16rtomb() calls. */
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__mbstate_t c16rtomb;
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/** Persistent state used by c32rtomb() calls. */
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__mbstate_t c32rtomb;
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/** Persistent state used by wcrtomb() calls. */
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__mbstate_t wcrtomb;
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/** Persistent state used by wcsnrtombs() calls. */
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__mbstate_t wcsnrtombs;
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/** Persistent state used by wcsrtombs() calls. */
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__mbstate_t wcsrtombs;
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/** Persistent state used by wctomb() calls. */
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__mbstate_t wctomb;
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/** Buffer used by nl_langinfo_l() */
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char *csym;
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};
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/**
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* Increments the reference count of a reference-counted structure.
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*/
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__attribute__((unused)) static void*
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xlocale_retain(void *val)
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{
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struct xlocale_refcounted *obj = val;
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atomic_add_long(&(obj->retain_count), 1);
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return (val);
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}
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/**
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* Decrements the reference count of a reference-counted structure, freeing it
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* if this is the last reference, calling its destructor if it has one.
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*/
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__attribute__((unused)) static void
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xlocale_release(void *val)
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{
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struct xlocale_refcounted *obj = val;
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long count;
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count = atomic_fetchadd_long(&(obj->retain_count), -1) - 1;
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if (count < 0 && obj->destructor != NULL)
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obj->destructor(obj);
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}
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/**
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* Load functions. Each takes the name of a locale and a pointer to the data
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* to be initialised as arguments. Two special values are allowed for the
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*/
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extern void* __collate_load(const char*, locale_t);
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extern void* __ctype_load(const char*, locale_t);
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extern void* __messages_load(const char*, locale_t);
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extern void* __monetary_load(const char*, locale_t);
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extern void* __numeric_load(const char*, locale_t);
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extern void* __time_load(const char*, locale_t);
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extern struct _xlocale __xlocale_global_locale;
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extern struct _xlocale __xlocale_C_locale;
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/**
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* Caches the rune table in TLS for fast access.
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*/
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void __set_thread_rune_locale(locale_t loc);
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/**
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* Flag indicating whether a per-thread locale has been set. If no per-thread
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* locale has ever been set, then we always use the global locale.
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*/
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extern int __has_thread_locale;
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#ifndef __NO_TLS
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/**
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* The per-thread locale. Avoids the need to use pthread lookup functions when
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* getting the per-thread locale.
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*/
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extern _Thread_local locale_t __thread_locale;
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/**
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* Returns the current locale for this thread, or the global locale if none is
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* set. The caller does not have to free the locale. The return value from
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* this call is not guaranteed to remain valid after the locale changes. As
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* such, this should only be called within libc functions.
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*/
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static inline locale_t __get_locale(void)
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{
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if (!__has_thread_locale) {
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return (&__xlocale_global_locale);
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}
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return (__thread_locale ? __thread_locale : &__xlocale_global_locale);
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}
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#else
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locale_t __get_locale(void);
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#endif
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/**
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* Two magic values are allowed for locale_t objects. NULL and -1. This
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* function maps those to the real locales that they represent.
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*/
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static inline locale_t get_real_locale(locale_t locale)
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{
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switch ((intptr_t)locale) {
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case 0: return (&__xlocale_C_locale);
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case -1: return (&__xlocale_global_locale);
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default: return (locale);
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}
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}
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/**
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* Replace a placeholder locale with the real global or thread-local locale_t.
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*/
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#define FIX_LOCALE(l) (l = get_real_locale(l))
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#endif
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