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jeremybenn |
// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
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// 2009, 2010
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// Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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#include <clocale>
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#include <cstring>
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#include <cstdlib> // For getenv, free.
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#include <cctype>
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#include <cwctype> // For towupper, etc.
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#include <locale>
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#include <ext/concurrence.h>
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namespace
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{
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__gnu_cxx::__mutex&
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get_locale_mutex()
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{
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static __gnu_cxx::__mutex locale_mutex;
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return locale_mutex;
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}
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using namespace std;
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typedef char fake_locale_Impl[sizeof(locale::_Impl)]
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__attribute__ ((aligned(__alignof__(locale::_Impl))));
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fake_locale_Impl c_locale_impl;
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typedef char fake_locale[sizeof(locale)]
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__attribute__ ((aligned(__alignof__(locale))));
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fake_locale c_locale;
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typedef char fake_name_vec[sizeof(char*)]
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__attribute__ ((aligned(__alignof__(char*))));
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fake_name_vec name_vec[6 + _GLIBCXX_NUM_CATEGORIES];
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typedef char fake_names[sizeof(char[2])]
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__attribute__ ((aligned(__alignof__(char[2]))));
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fake_names name_c[6 + _GLIBCXX_NUM_CATEGORIES];
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typedef char fake_facet_vec[sizeof(locale::facet*)]
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__attribute__ ((aligned(__alignof__(locale::facet*))));
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fake_facet_vec facet_vec[_GLIBCXX_NUM_FACETS];
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typedef char fake_cache_vec[sizeof(locale::facet*)]
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__attribute__ ((aligned(__alignof__(locale::facet*))));
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fake_cache_vec cache_vec[_GLIBCXX_NUM_FACETS];
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typedef char fake_ctype_c[sizeof(std::ctype<char>)]
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__attribute__ ((aligned(__alignof__(std::ctype<char>))));
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fake_ctype_c ctype_c;
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typedef char fake_collate_c[sizeof(std::collate<char>)]
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__attribute__ ((aligned(__alignof__(std::collate<char>))));
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fake_collate_c collate_c;
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typedef char fake_numpunct_c[sizeof(numpunct<char>)]
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__attribute__ ((aligned(__alignof__(numpunct<char>))));
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fake_numpunct_c numpunct_c;
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typedef char fake_num_get_c[sizeof(num_get<char>)]
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__attribute__ ((aligned(__alignof__(num_get<char>))));
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fake_num_get_c num_get_c;
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typedef char fake_num_put_c[sizeof(num_put<char>)]
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__attribute__ ((aligned(__alignof__(num_put<char>))));
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fake_num_put_c num_put_c;
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typedef char fake_codecvt_c[sizeof(codecvt<char, char, mbstate_t>)]
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__attribute__ ((aligned(__alignof__(codecvt<char, char, mbstate_t>))));
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fake_codecvt_c codecvt_c;
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typedef char fake_moneypunct_c[sizeof(moneypunct<char, true>)]
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__attribute__ ((aligned(__alignof__(moneypunct<char, true>))));
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fake_moneypunct_c moneypunct_ct;
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fake_moneypunct_c moneypunct_cf;
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typedef char fake_money_get_c[sizeof(money_get<char>)]
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__attribute__ ((aligned(__alignof__(money_get<char>))));
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fake_money_get_c money_get_c;
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typedef char fake_money_put_c[sizeof(money_put<char>)]
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__attribute__ ((aligned(__alignof__(money_put<char>))));
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fake_money_put_c money_put_c;
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typedef char fake_timepunct_c[sizeof(__timepunct<char>)]
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__attribute__ ((aligned(__alignof__(__timepunct<char>))));
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fake_timepunct_c timepunct_c;
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typedef char fake_time_get_c[sizeof(time_get<char>)]
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__attribute__ ((aligned(__alignof__(time_get<char>))));
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fake_time_get_c time_get_c;
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typedef char fake_time_put_c[sizeof(time_put<char>)]
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__attribute__ ((aligned(__alignof__(time_put<char>))));
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fake_time_put_c time_put_c;
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typedef char fake_messages_c[sizeof(messages<char>)]
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__attribute__ ((aligned(__alignof__(messages<char>))));
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fake_messages_c messages_c;
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#ifdef _GLIBCXX_USE_WCHAR_T
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typedef char fake_wtype_w[sizeof(std::ctype<wchar_t>)]
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__attribute__ ((aligned(__alignof__(std::ctype<wchar_t>))));
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fake_wtype_w ctype_w;
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typedef char fake_wollate_w[sizeof(std::collate<wchar_t>)]
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__attribute__ ((aligned(__alignof__(std::collate<wchar_t>))));
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fake_wollate_w collate_w;
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typedef char fake_numpunct_w[sizeof(numpunct<wchar_t>)]
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__attribute__ ((aligned(__alignof__(numpunct<wchar_t>))));
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fake_numpunct_w numpunct_w;
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typedef char fake_num_get_w[sizeof(num_get<wchar_t>)]
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__attribute__ ((aligned(__alignof__(num_get<wchar_t>))));
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fake_num_get_w num_get_w;
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typedef char fake_num_put_w[sizeof(num_put<wchar_t>)]
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__attribute__ ((aligned(__alignof__(num_put<wchar_t>))));
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fake_num_put_w num_put_w;
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typedef char fake_wodecvt_w[sizeof(codecvt<wchar_t, char, mbstate_t>)]
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__attribute__ ((aligned(__alignof__(codecvt<wchar_t, char, mbstate_t>))));
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fake_wodecvt_w codecvt_w;
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typedef char fake_moneypunct_w[sizeof(moneypunct<wchar_t, true>)]
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__attribute__ ((aligned(__alignof__(moneypunct<wchar_t, true>))));
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fake_moneypunct_w moneypunct_wt;
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fake_moneypunct_w moneypunct_wf;
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typedef char fake_money_get_w[sizeof(money_get<wchar_t>)]
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__attribute__ ((aligned(__alignof__(money_get<wchar_t>))));
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fake_money_get_w money_get_w;
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typedef char fake_money_put_w[sizeof(money_put<wchar_t>)]
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__attribute__ ((aligned(__alignof__(money_put<wchar_t>))));
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fake_money_put_w money_put_w;
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typedef char fake_timepunct_w[sizeof(__timepunct<wchar_t>)]
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__attribute__ ((aligned(__alignof__(__timepunct<wchar_t>))));
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fake_timepunct_w timepunct_w;
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typedef char fake_time_get_w[sizeof(time_get<wchar_t>)]
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__attribute__ ((aligned(__alignof__(time_get<wchar_t>))));
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fake_time_get_w time_get_w;
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typedef char fake_time_put_w[sizeof(time_put<wchar_t>)]
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__attribute__ ((aligned(__alignof__(time_put<wchar_t>))));
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fake_time_put_w time_put_w;
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typedef char fake_messages_w[sizeof(messages<wchar_t>)]
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__attribute__ ((aligned(__alignof__(messages<wchar_t>))));
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fake_messages_w messages_w;
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#endif
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// Storage for "C" locale caches.
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typedef char fake_num_cache_c[sizeof(std::__numpunct_cache<char>)]
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__attribute__ ((aligned(__alignof__(std::__numpunct_cache<char>))));
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fake_num_cache_c numpunct_cache_c;
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typedef char fake_money_cache_c[sizeof(std::__moneypunct_cache<char, true>)]
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__attribute__ ((aligned(__alignof__(std::__moneypunct_cache<char, true>))));
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fake_money_cache_c moneypunct_cache_ct;
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fake_money_cache_c moneypunct_cache_cf;
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typedef char fake_time_cache_c[sizeof(std::__timepunct_cache<char>)]
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__attribute__ ((aligned(__alignof__(std::__timepunct_cache<char>))));
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fake_time_cache_c timepunct_cache_c;
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#ifdef _GLIBCXX_USE_WCHAR_T
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typedef char fake_num_cache_w[sizeof(std::__numpunct_cache<wchar_t>)]
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__attribute__ ((aligned(__alignof__(std::__numpunct_cache<wchar_t>))));
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fake_num_cache_w numpunct_cache_w;
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typedef char fake_money_cache_w[sizeof(std::__moneypunct_cache<wchar_t,true>)]
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__attribute__ ((aligned(__alignof__(std::__moneypunct_cache<wchar_t,true>))));
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fake_money_cache_w moneypunct_cache_wt;
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fake_money_cache_w moneypunct_cache_wf;
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typedef char fake_time_cache_w[sizeof(std::__timepunct_cache<wchar_t>)]
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__attribute__ ((aligned(__alignof__(std::__timepunct_cache<wchar_t>))));
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fake_time_cache_w timepunct_cache_w;
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#endif
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} // anonymous namespace
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_GLIBCXX_BEGIN_NAMESPACE(std)
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locale::locale() throw() : _M_impl(0)
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{
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_S_initialize();
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// Checked locking to optimize the common case where _S_global
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// still points to _S_classic (locale::_S_initialize_once()):
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// - If they are the same, just increment the reference count and
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// we are done. This effectively constructs a C locale object
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// identical to the static c_locale.
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// - Otherwise, _S_global can and may be destroyed due to
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// locale::global() call on another thread, in which case we
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// fall back to lock protected access to both _S_global and
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// its reference count.
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_M_impl = _S_global;
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if (_M_impl == _S_classic)
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_M_impl->_M_add_reference();
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else
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{
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__gnu_cxx::__scoped_lock sentry(get_locale_mutex());
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_S_global->_M_add_reference();
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_M_impl = _S_global;
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}
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}
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locale
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locale::global(const locale& __other)
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{
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_S_initialize();
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_Impl* __old;
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{
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__gnu_cxx::__scoped_lock sentry(get_locale_mutex());
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__old = _S_global;
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__other._M_impl->_M_add_reference();
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_S_global = __other._M_impl;
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const string __other_name = __other.name();
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if (__other_name != "*")
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setlocale(LC_ALL, __other_name.c_str());
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}
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// Reference count sanity check: one reference removed for the
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// subsition of __other locale, one added by return-by-value. Net
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// difference: zero. When the returned locale object's destrutor
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// is called, then the reference count is decremented and possibly
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// destroyed.
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return locale(__old);
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}
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const locale&
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locale::classic()
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{
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_S_initialize();
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return *(new (&c_locale) locale(_S_classic));
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}
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void
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locale::_S_initialize_once() throw()
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{
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// 2 references.
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// One reference for _S_classic, one for _S_global
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_S_classic = new (&c_locale_impl) _Impl(2);
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_S_global = _S_classic;
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}
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void
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locale::_S_initialize()
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{
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#ifdef __GTHREADS
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if (__gthread_active_p())
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__gthread_once(&_S_once, _S_initialize_once);
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#endif
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if (!_S_classic)
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_S_initialize_once();
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}
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// Definitions for static const data members of locale::_Impl
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const locale::id* const
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locale::_Impl::_S_id_ctype[] =
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{
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&std::ctype<char>::id,
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&codecvt<char, char, mbstate_t>::id,
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#ifdef _GLIBCXX_USE_WCHAR_T
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&std::ctype<wchar_t>::id,
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&codecvt<wchar_t, char, mbstate_t>::id,
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#endif
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};
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const locale::id* const
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locale::_Impl::_S_id_numeric[] =
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{
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&num_get<char>::id,
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&num_put<char>::id,
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&numpunct<char>::id,
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#ifdef _GLIBCXX_USE_WCHAR_T
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&num_get<wchar_t>::id,
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&num_put<wchar_t>::id,
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&numpunct<wchar_t>::id,
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#endif
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};
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const locale::id* const
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locale::_Impl::_S_id_collate[] =
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{
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&std::collate<char>::id,
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#ifdef _GLIBCXX_USE_WCHAR_T
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&std::collate<wchar_t>::id,
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#endif
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};
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const locale::id* const
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locale::_Impl::_S_id_time[] =
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{
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&__timepunct<char>::id,
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&time_get<char>::id,
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&time_put<char>::id,
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#ifdef _GLIBCXX_USE_WCHAR_T
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&__timepunct<wchar_t>::id,
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&time_get<wchar_t>::id,
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328 |
|
|
&time_put<wchar_t>::id,
|
329 |
|
|
#endif
|
330 |
|
|
|
331 |
|
|
};
|
332 |
|
|
|
333 |
|
|
const locale::id* const
|
334 |
|
|
locale::_Impl::_S_id_monetary[] =
|
335 |
|
|
{
|
336 |
|
|
&money_get<char>::id,
|
337 |
|
|
&money_put<char>::id,
|
338 |
|
|
&moneypunct<char, false>::id,
|
339 |
|
|
&moneypunct<char, true >::id,
|
340 |
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
341 |
|
|
&money_get<wchar_t>::id,
|
342 |
|
|
&money_put<wchar_t>::id,
|
343 |
|
|
&moneypunct<wchar_t, false>::id,
|
344 |
|
|
&moneypunct<wchar_t, true >::id,
|
345 |
|
|
#endif
|
346 |
|
|
|
347 |
|
|
};
|
348 |
|
|
|
349 |
|
|
const locale::id* const
|
350 |
|
|
locale::_Impl::_S_id_messages[] =
|
351 |
|
|
{
|
352 |
|
|
&std::messages<char>::id,
|
353 |
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
354 |
|
|
&std::messages<wchar_t>::id,
|
355 |
|
|
#endif
|
356 |
|
|
|
357 |
|
|
};
|
358 |
|
|
|
359 |
|
|
const locale::id* const* const
|
360 |
|
|
locale::_Impl::_S_facet_categories[] =
|
361 |
|
|
{
|
362 |
|
|
// Order must match the decl order in class locale.
|
363 |
|
|
locale::_Impl::_S_id_ctype,
|
364 |
|
|
locale::_Impl::_S_id_numeric,
|
365 |
|
|
locale::_Impl::_S_id_collate,
|
366 |
|
|
locale::_Impl::_S_id_time,
|
367 |
|
|
locale::_Impl::_S_id_monetary,
|
368 |
|
|
locale::_Impl::_S_id_messages,
|
369 |
|
|
|
370 |
|
|
};
|
371 |
|
|
|
372 |
|
|
// Construct "C" _Impl.
|
373 |
|
|
locale::_Impl::
|
374 |
|
|
_Impl(size_t __refs) throw()
|
375 |
|
|
: _M_refcount(__refs), _M_facets(0), _M_facets_size(_GLIBCXX_NUM_FACETS),
|
376 |
|
|
_M_caches(0), _M_names(0)
|
377 |
|
|
{
|
378 |
|
|
_M_facets = new (&facet_vec) const facet*[_M_facets_size];
|
379 |
|
|
_M_caches = new (&cache_vec) const facet*[_M_facets_size];
|
380 |
|
|
for (size_t __i = 0; __i < _M_facets_size; ++__i)
|
381 |
|
|
_M_facets[__i] = _M_caches[__i] = 0;
|
382 |
|
|
|
383 |
|
|
// Name the categories.
|
384 |
|
|
_M_names = new (&name_vec) char*[_S_categories_size];
|
385 |
|
|
_M_names[0] = new (&name_c[0]) char[2];
|
386 |
|
|
std::memcpy(_M_names[0], locale::facet::_S_get_c_name(), 2);
|
387 |
|
|
for (size_t __j = 1; __j < _S_categories_size; ++__j)
|
388 |
|
|
_M_names[__j] = 0;
|
389 |
|
|
|
390 |
|
|
// This is needed as presently the C++ version of "C" locales
|
391 |
|
|
// != data in the underlying locale model for __timepunct,
|
392 |
|
|
// numpunct, and moneypunct. Also, the "C" locales must be
|
393 |
|
|
// constructed in a way such that they are pre-allocated.
|
394 |
|
|
// NB: Set locale::facets(ref) count to one so that each individual
|
395 |
|
|
// facet is not destroyed when the locale (and thus locale::_Impl) is
|
396 |
|
|
// destroyed.
|
397 |
|
|
_M_init_facet(new (&ctype_c) std::ctype<char>(0, false, 1));
|
398 |
|
|
_M_init_facet(new (&codecvt_c) codecvt<char, char, mbstate_t>(1));
|
399 |
|
|
|
400 |
|
|
typedef __numpunct_cache<char> num_cache_c;
|
401 |
|
|
num_cache_c* __npc = new (&numpunct_cache_c) num_cache_c(2);
|
402 |
|
|
_M_init_facet(new (&numpunct_c) numpunct<char>(__npc, 1));
|
403 |
|
|
|
404 |
|
|
_M_init_facet(new (&num_get_c) num_get<char>(1));
|
405 |
|
|
_M_init_facet(new (&num_put_c) num_put<char>(1));
|
406 |
|
|
_M_init_facet(new (&collate_c) std::collate<char>(1));
|
407 |
|
|
|
408 |
|
|
typedef __moneypunct_cache<char, false> money_cache_cf;
|
409 |
|
|
typedef __moneypunct_cache<char, true> money_cache_ct;
|
410 |
|
|
money_cache_cf* __mpcf = new (&moneypunct_cache_cf) money_cache_cf(2);
|
411 |
|
|
_M_init_facet(new (&moneypunct_cf) moneypunct<char, false>(__mpcf, 1));
|
412 |
|
|
money_cache_ct* __mpct = new (&moneypunct_cache_ct) money_cache_ct(2);
|
413 |
|
|
_M_init_facet(new (&moneypunct_ct) moneypunct<char, true>(__mpct, 1));
|
414 |
|
|
|
415 |
|
|
_M_init_facet(new (&money_get_c) money_get<char>(1));
|
416 |
|
|
_M_init_facet(new (&money_put_c) money_put<char>(1));
|
417 |
|
|
|
418 |
|
|
typedef __timepunct_cache<char> time_cache_c;
|
419 |
|
|
time_cache_c* __tpc = new (&timepunct_cache_c) time_cache_c(2);
|
420 |
|
|
_M_init_facet(new (&timepunct_c) __timepunct<char>(__tpc, 1));
|
421 |
|
|
|
422 |
|
|
_M_init_facet(new (&time_get_c) time_get<char>(1));
|
423 |
|
|
_M_init_facet(new (&time_put_c) time_put<char>(1));
|
424 |
|
|
_M_init_facet(new (&messages_c) std::messages<char>(1));
|
425 |
|
|
|
426 |
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
427 |
|
|
_M_init_facet(new (&ctype_w) std::ctype<wchar_t>(1));
|
428 |
|
|
_M_init_facet(new (&codecvt_w) codecvt<wchar_t, char, mbstate_t>(1));
|
429 |
|
|
|
430 |
|
|
typedef __numpunct_cache<wchar_t> num_cache_w;
|
431 |
|
|
num_cache_w* __npw = new (&numpunct_cache_w) num_cache_w(2);
|
432 |
|
|
_M_init_facet(new (&numpunct_w) numpunct<wchar_t>(__npw, 1));
|
433 |
|
|
|
434 |
|
|
_M_init_facet(new (&num_get_w) num_get<wchar_t>(1));
|
435 |
|
|
_M_init_facet(new (&num_put_w) num_put<wchar_t>(1));
|
436 |
|
|
_M_init_facet(new (&collate_w) std::collate<wchar_t>(1));
|
437 |
|
|
|
438 |
|
|
typedef __moneypunct_cache<wchar_t, false> money_cache_wf;
|
439 |
|
|
typedef __moneypunct_cache<wchar_t, true> money_cache_wt;
|
440 |
|
|
money_cache_wf* __mpwf = new (&moneypunct_cache_wf) money_cache_wf(2);
|
441 |
|
|
_M_init_facet(new (&moneypunct_wf) moneypunct<wchar_t, false>(__mpwf, 1));
|
442 |
|
|
money_cache_wt* __mpwt = new (&moneypunct_cache_wt) money_cache_wt(2);
|
443 |
|
|
_M_init_facet(new (&moneypunct_wt) moneypunct<wchar_t, true>(__mpwt, 1));
|
444 |
|
|
|
445 |
|
|
_M_init_facet(new (&money_get_w) money_get<wchar_t>(1));
|
446 |
|
|
_M_init_facet(new (&money_put_w) money_put<wchar_t>(1));
|
447 |
|
|
|
448 |
|
|
typedef __timepunct_cache<wchar_t> time_cache_w;
|
449 |
|
|
time_cache_w* __tpw = new (&timepunct_cache_w) time_cache_w(2);
|
450 |
|
|
_M_init_facet(new (&timepunct_w) __timepunct<wchar_t>(__tpw, 1));
|
451 |
|
|
|
452 |
|
|
_M_init_facet(new (&time_get_w) time_get<wchar_t>(1));
|
453 |
|
|
_M_init_facet(new (&time_put_w) time_put<wchar_t>(1));
|
454 |
|
|
_M_init_facet(new (&messages_w) std::messages<wchar_t>(1));
|
455 |
|
|
#endif
|
456 |
|
|
|
457 |
|
|
// This locale is safe to pre-cache, after all the facets have
|
458 |
|
|
// been created and installed.
|
459 |
|
|
_M_caches[numpunct<char>::id._M_id()] = __npc;
|
460 |
|
|
_M_caches[moneypunct<char, false>::id._M_id()] = __mpcf;
|
461 |
|
|
_M_caches[moneypunct<char, true>::id._M_id()] = __mpct;
|
462 |
|
|
_M_caches[__timepunct<char>::id._M_id()] = __tpc;
|
463 |
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
464 |
|
|
_M_caches[numpunct<wchar_t>::id._M_id()] = __npw;
|
465 |
|
|
_M_caches[moneypunct<wchar_t, false>::id._M_id()] = __mpwf;
|
466 |
|
|
_M_caches[moneypunct<wchar_t, true>::id._M_id()] = __mpwt;
|
467 |
|
|
_M_caches[__timepunct<wchar_t>::id._M_id()] = __tpw;
|
468 |
|
|
#endif
|
469 |
|
|
}
|
470 |
|
|
|
471 |
|
|
_GLIBCXX_END_NAMESPACE
|