1 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
3 // Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
32 #include <cstdlib> // For getenv, free.
34 #include <cwctype> // For towupper, etc.
36 #include <ext/concurrence.h>
43 static __gnu_cxx::__mutex locale_mutex;
49 typedef char fake_locale_Impl[sizeof(locale::_Impl)]
50 __attribute__ ((aligned(__alignof__(locale::_Impl))));
51 fake_locale_Impl c_locale_impl;
53 typedef char fake_locale[sizeof(locale)]
54 __attribute__ ((aligned(__alignof__(locale))));
57 typedef char fake_name_vec[sizeof(char*)]
58 __attribute__ ((aligned(__alignof__(char*))));
59 fake_name_vec name_vec[6 + _GLIBCXX_NUM_CATEGORIES];
61 typedef char fake_names[sizeof(char[2])]
62 __attribute__ ((aligned(__alignof__(char[2]))));
63 fake_names name_c[6 + _GLIBCXX_NUM_CATEGORIES];
65 typedef char fake_facet_vec[sizeof(locale::facet*)]
66 __attribute__ ((aligned(__alignof__(locale::facet*))));
67 fake_facet_vec facet_vec[_GLIBCXX_NUM_FACETS];
69 typedef char fake_cache_vec[sizeof(locale::facet*)]
70 __attribute__ ((aligned(__alignof__(locale::facet*))));
71 fake_cache_vec cache_vec[_GLIBCXX_NUM_FACETS];
73 typedef char fake_ctype_c[sizeof(std::ctype<char>)]
74 __attribute__ ((aligned(__alignof__(std::ctype<char>))));
77 typedef char fake_collate_c[sizeof(std::collate<char>)]
78 __attribute__ ((aligned(__alignof__(std::collate<char>))));
79 fake_collate_c collate_c;
81 typedef char fake_numpunct_c[sizeof(numpunct<char>)]
82 __attribute__ ((aligned(__alignof__(numpunct<char>))));
83 fake_numpunct_c numpunct_c;
85 typedef char fake_num_get_c[sizeof(num_get<char>)]
86 __attribute__ ((aligned(__alignof__(num_get<char>))));
87 fake_num_get_c num_get_c;
89 typedef char fake_num_put_c[sizeof(num_put<char>)]
90 __attribute__ ((aligned(__alignof__(num_put<char>))));
91 fake_num_put_c num_put_c;
93 typedef char fake_codecvt_c[sizeof(codecvt<char, char, mbstate_t>)]
94 __attribute__ ((aligned(__alignof__(codecvt<char, char, mbstate_t>))));
95 fake_codecvt_c codecvt_c;
97 typedef char fake_moneypunct_c[sizeof(moneypunct<char, true>)]
98 __attribute__ ((aligned(__alignof__(moneypunct<char, true>))));
99 fake_moneypunct_c moneypunct_ct;
100 fake_moneypunct_c moneypunct_cf;
102 typedef char fake_money_get_c[sizeof(money_get<char>)]
103 __attribute__ ((aligned(__alignof__(money_get<char>))));
104 fake_money_get_c money_get_c;
106 typedef char fake_money_put_c[sizeof(money_put<char>)]
107 __attribute__ ((aligned(__alignof__(money_put<char>))));
108 fake_money_put_c money_put_c;
110 typedef char fake_timepunct_c[sizeof(__timepunct<char>)]
111 __attribute__ ((aligned(__alignof__(__timepunct<char>))));
112 fake_timepunct_c timepunct_c;
114 typedef char fake_time_get_c[sizeof(time_get<char>)]
115 __attribute__ ((aligned(__alignof__(time_get<char>))));
116 fake_time_get_c time_get_c;
118 typedef char fake_time_put_c[sizeof(time_put<char>)]
119 __attribute__ ((aligned(__alignof__(time_put<char>))));
120 fake_time_put_c time_put_c;
122 typedef char fake_messages_c[sizeof(messages<char>)]
123 __attribute__ ((aligned(__alignof__(messages<char>))));
124 fake_messages_c messages_c;
126 #ifdef _GLIBCXX_USE_WCHAR_T
127 typedef char fake_wtype_w[sizeof(std::ctype<wchar_t>)]
128 __attribute__ ((aligned(__alignof__(std::ctype<wchar_t>))));
129 fake_wtype_w ctype_w;
131 typedef char fake_wollate_w[sizeof(std::collate<wchar_t>)]
132 __attribute__ ((aligned(__alignof__(std::collate<wchar_t>))));
133 fake_wollate_w collate_w;
135 typedef char fake_numpunct_w[sizeof(numpunct<wchar_t>)]
136 __attribute__ ((aligned(__alignof__(numpunct<wchar_t>))));
137 fake_numpunct_w numpunct_w;
139 typedef char fake_num_get_w[sizeof(num_get<wchar_t>)]
140 __attribute__ ((aligned(__alignof__(num_get<wchar_t>))));
141 fake_num_get_w num_get_w;
143 typedef char fake_num_put_w[sizeof(num_put<wchar_t>)]
144 __attribute__ ((aligned(__alignof__(num_put<wchar_t>))));
145 fake_num_put_w num_put_w;
147 typedef char fake_wodecvt_w[sizeof(codecvt<wchar_t, char, mbstate_t>)]
148 __attribute__ ((aligned(__alignof__(codecvt<wchar_t, char, mbstate_t>))));
149 fake_wodecvt_w codecvt_w;
151 typedef char fake_moneypunct_w[sizeof(moneypunct<wchar_t, true>)]
152 __attribute__ ((aligned(__alignof__(moneypunct<wchar_t, true>))));
153 fake_moneypunct_w moneypunct_wt;
154 fake_moneypunct_w moneypunct_wf;
156 typedef char fake_money_get_w[sizeof(money_get<wchar_t>)]
157 __attribute__ ((aligned(__alignof__(money_get<wchar_t>))));
158 fake_money_get_w money_get_w;
160 typedef char fake_money_put_w[sizeof(money_put<wchar_t>)]
161 __attribute__ ((aligned(__alignof__(money_put<wchar_t>))));
162 fake_money_put_w money_put_w;
164 typedef char fake_timepunct_w[sizeof(__timepunct<wchar_t>)]
165 __attribute__ ((aligned(__alignof__(__timepunct<wchar_t>))));
166 fake_timepunct_w timepunct_w;
168 typedef char fake_time_get_w[sizeof(time_get<wchar_t>)]
169 __attribute__ ((aligned(__alignof__(time_get<wchar_t>))));
170 fake_time_get_w time_get_w;
172 typedef char fake_time_put_w[sizeof(time_put<wchar_t>)]
173 __attribute__ ((aligned(__alignof__(time_put<wchar_t>))));
174 fake_time_put_w time_put_w;
176 typedef char fake_messages_w[sizeof(messages<wchar_t>)]
177 __attribute__ ((aligned(__alignof__(messages<wchar_t>))));
178 fake_messages_w messages_w;
181 // Storage for "C" locale caches.
182 typedef char fake_num_cache_c[sizeof(std::__numpunct_cache<char>)]
183 __attribute__ ((aligned(__alignof__(std::__numpunct_cache<char>))));
184 fake_num_cache_c numpunct_cache_c;
186 typedef char fake_money_cache_c[sizeof(std::__moneypunct_cache<char, true>)]
187 __attribute__ ((aligned(__alignof__(std::__moneypunct_cache<char, true>))));
188 fake_money_cache_c moneypunct_cache_ct;
189 fake_money_cache_c moneypunct_cache_cf;
191 typedef char fake_time_cache_c[sizeof(std::__timepunct_cache<char>)]
192 __attribute__ ((aligned(__alignof__(std::__timepunct_cache<char>))));
193 fake_time_cache_c timepunct_cache_c;
195 #ifdef _GLIBCXX_USE_WCHAR_T
196 typedef char fake_num_cache_w[sizeof(std::__numpunct_cache<wchar_t>)]
197 __attribute__ ((aligned(__alignof__(std::__numpunct_cache<wchar_t>))));
198 fake_num_cache_w numpunct_cache_w;
200 typedef char fake_money_cache_w[sizeof(std::__moneypunct_cache<wchar_t,true>)]
201 __attribute__ ((aligned(__alignof__(std::__moneypunct_cache<wchar_t,true>))));
202 fake_money_cache_w moneypunct_cache_wt;
203 fake_money_cache_w moneypunct_cache_wf;
205 typedef char fake_time_cache_w[sizeof(std::__timepunct_cache<wchar_t>)]
206 __attribute__ ((aligned(__alignof__(std::__timepunct_cache<wchar_t>))));
207 fake_time_cache_w timepunct_cache_w;
209 } // anonymous namespace
211 _GLIBCXX_BEGIN_NAMESPACE(std)
213 locale::locale() throw() : _M_impl(0)
216 __gnu_cxx::__scoped_lock sentry(get_locale_mutex());
217 _S_global->_M_add_reference();
222 locale::global(const locale& __other)
227 __gnu_cxx::__scoped_lock sentry(get_locale_mutex());
229 __other._M_impl->_M_add_reference();
230 _S_global = __other._M_impl;
231 const string __other_name = __other.name();
232 if (__other_name != "*")
233 setlocale(LC_ALL, __other_name.c_str());
236 // Reference count sanity check: one reference removed for the
237 // subsition of __other locale, one added by return-by-value. Net
238 // difference: zero. When the returned locale object's destrutor
239 // is called, then the reference count is decremented and possibly
241 return locale(__old);
248 return *(new (&c_locale) locale(_S_classic));
252 locale::_S_initialize_once()
255 // One reference for _S_classic, one for _S_global
256 _S_classic = new (&c_locale_impl) _Impl(2);
257 _S_global = _S_classic;
261 locale::_S_initialize()
264 if (__gthread_active_p())
265 __gthread_once(&_S_once, _S_initialize_once);
268 _S_initialize_once();
271 // Definitions for static const data members of locale::_Impl
272 const locale::id* const
273 locale::_Impl::_S_id_ctype[] =
275 &std::ctype<char>::id,
276 &codecvt<char, char, mbstate_t>::id,
277 #ifdef _GLIBCXX_USE_WCHAR_T
278 &std::ctype<wchar_t>::id,
279 &codecvt<wchar_t, char, mbstate_t>::id,
284 const locale::id* const
285 locale::_Impl::_S_id_numeric[] =
290 #ifdef _GLIBCXX_USE_WCHAR_T
291 &num_get<wchar_t>::id,
292 &num_put<wchar_t>::id,
293 &numpunct<wchar_t>::id,
298 const locale::id* const
299 locale::_Impl::_S_id_collate[] =
301 &std::collate<char>::id,
302 #ifdef _GLIBCXX_USE_WCHAR_T
303 &std::collate<wchar_t>::id,
308 const locale::id* const
309 locale::_Impl::_S_id_time[] =
311 &__timepunct<char>::id,
314 #ifdef _GLIBCXX_USE_WCHAR_T
315 &__timepunct<wchar_t>::id,
316 &time_get<wchar_t>::id,
317 &time_put<wchar_t>::id,
322 const locale::id* const
323 locale::_Impl::_S_id_monetary[] =
325 &money_get<char>::id,
326 &money_put<char>::id,
327 &moneypunct<char, false>::id,
328 &moneypunct<char, true >::id,
329 #ifdef _GLIBCXX_USE_WCHAR_T
330 &money_get<wchar_t>::id,
331 &money_put<wchar_t>::id,
332 &moneypunct<wchar_t, false>::id,
333 &moneypunct<wchar_t, true >::id,
338 const locale::id* const
339 locale::_Impl::_S_id_messages[] =
341 &std::messages<char>::id,
342 #ifdef _GLIBCXX_USE_WCHAR_T
343 &std::messages<wchar_t>::id,
348 const locale::id* const* const
349 locale::_Impl::_S_facet_categories[] =
351 // Order must match the decl order in class locale.
352 locale::_Impl::_S_id_ctype,
353 locale::_Impl::_S_id_numeric,
354 locale::_Impl::_S_id_collate,
355 locale::_Impl::_S_id_time,
356 locale::_Impl::_S_id_monetary,
357 locale::_Impl::_S_id_messages,
361 // Construct "C" _Impl.
363 _Impl(size_t __refs) throw()
364 : _M_refcount(__refs), _M_facets(0), _M_facets_size(_GLIBCXX_NUM_FACETS),
365 _M_caches(0), _M_names(0)
367 _M_facets = new (&facet_vec) const facet*[_M_facets_size];
368 _M_caches = new (&cache_vec) const facet*[_M_facets_size];
369 for (size_t __i = 0; __i < _M_facets_size; ++__i)
370 _M_facets[__i] = _M_caches[__i] = 0;
372 // Name the categories.
373 _M_names = new (&name_vec) char*[_S_categories_size];
374 _M_names[0] = new (&name_c[0]) char[2];
375 std::memcpy(_M_names[0], locale::facet::_S_get_c_name(), 2);
376 for (size_t __j = 1; __j < _S_categories_size; ++__j)
379 // This is needed as presently the C++ version of "C" locales
380 // != data in the underlying locale model for __timepunct,
381 // numpunct, and moneypunct. Also, the "C" locales must be
382 // constructed in a way such that they are pre-allocated.
383 // NB: Set locale::facets(ref) count to one so that each individual
384 // facet is not destroyed when the locale (and thus locale::_Impl) is
386 _M_init_facet(new (&ctype_c) std::ctype<char>(0, false, 1));
387 _M_init_facet(new (&codecvt_c) codecvt<char, char, mbstate_t>(1));
389 typedef __numpunct_cache<char> num_cache_c;
390 num_cache_c* __npc = new (&numpunct_cache_c) num_cache_c(2);
391 _M_init_facet(new (&numpunct_c) numpunct<char>(__npc, 1));
393 _M_init_facet(new (&num_get_c) num_get<char>(1));
394 _M_init_facet(new (&num_put_c) num_put<char>(1));
395 _M_init_facet(new (&collate_c) std::collate<char>(1));
397 typedef __moneypunct_cache<char, false> money_cache_cf;
398 typedef __moneypunct_cache<char, true> money_cache_ct;
399 money_cache_cf* __mpcf = new (&moneypunct_cache_cf) money_cache_cf(2);
400 _M_init_facet(new (&moneypunct_cf) moneypunct<char, false>(__mpcf, 1));
401 money_cache_ct* __mpct = new (&moneypunct_cache_ct) money_cache_ct(2);
402 _M_init_facet(new (&moneypunct_ct) moneypunct<char, true>(__mpct, 1));
404 _M_init_facet(new (&money_get_c) money_get<char>(1));
405 _M_init_facet(new (&money_put_c) money_put<char>(1));
407 typedef __timepunct_cache<char> time_cache_c;
408 time_cache_c* __tpc = new (&timepunct_cache_c) time_cache_c(2);
409 _M_init_facet(new (&timepunct_c) __timepunct<char>(__tpc, 1));
411 _M_init_facet(new (&time_get_c) time_get<char>(1));
412 _M_init_facet(new (&time_put_c) time_put<char>(1));
413 _M_init_facet(new (&messages_c) std::messages<char>(1));
415 #ifdef _GLIBCXX_USE_WCHAR_T
416 _M_init_facet(new (&ctype_w) std::ctype<wchar_t>(1));
417 _M_init_facet(new (&codecvt_w) codecvt<wchar_t, char, mbstate_t>(1));
419 typedef __numpunct_cache<wchar_t> num_cache_w;
420 num_cache_w* __npw = new (&numpunct_cache_w) num_cache_w(2);
421 _M_init_facet(new (&numpunct_w) numpunct<wchar_t>(__npw, 1));
423 _M_init_facet(new (&num_get_w) num_get<wchar_t>(1));
424 _M_init_facet(new (&num_put_w) num_put<wchar_t>(1));
425 _M_init_facet(new (&collate_w) std::collate<wchar_t>(1));
427 typedef __moneypunct_cache<wchar_t, false> money_cache_wf;
428 typedef __moneypunct_cache<wchar_t, true> money_cache_wt;
429 money_cache_wf* __mpwf = new (&moneypunct_cache_wf) money_cache_wf(2);
430 _M_init_facet(new (&moneypunct_wf) moneypunct<wchar_t, false>(__mpwf, 1));
431 money_cache_wt* __mpwt = new (&moneypunct_cache_wt) money_cache_wt(2);
432 _M_init_facet(new (&moneypunct_wt) moneypunct<wchar_t, true>(__mpwt, 1));
434 _M_init_facet(new (&money_get_w) money_get<wchar_t>(1));
435 _M_init_facet(new (&money_put_w) money_put<wchar_t>(1));
437 typedef __timepunct_cache<wchar_t> time_cache_w;
438 time_cache_w* __tpw = new (&timepunct_cache_w) time_cache_w(2);
439 _M_init_facet(new (&timepunct_w) __timepunct<wchar_t>(__tpw, 1));
441 _M_init_facet(new (&time_get_w) time_get<wchar_t>(1));
442 _M_init_facet(new (&time_put_w) time_put<wchar_t>(1));
443 _M_init_facet(new (&messages_w) std::messages<wchar_t>(1));
446 // This locale is safe to pre-cache, after all the facets have
447 // been created and installed.
448 _M_caches[numpunct<char>::id._M_id()] = __npc;
449 _M_caches[moneypunct<char, false>::id._M_id()] = __mpcf;
450 _M_caches[moneypunct<char, true>::id._M_id()] = __mpct;
451 _M_caches[__timepunct<char>::id._M_id()] = __tpc;
452 #ifdef _GLIBCXX_USE_WCHAR_T
453 _M_caches[numpunct<wchar_t>::id._M_id()] = __npw;
454 _M_caches[moneypunct<wchar_t, false>::id._M_id()] = __mpwf;
455 _M_caches[moneypunct<wchar_t, true>::id._M_id()] = __mpwt;
456 _M_caches[__timepunct<wchar_t>::id._M_id()] = __tpw;
460 _GLIBCXX_END_NAMESPACE