globals.cc

00001 // Copyright (C) 2001, 2002 Free Software Foundation, Inc.
00002 //
00003 // This file is part of the GNU ISO C++ Library.  This library is free
00004 // software; you can redistribute it and/or modify it under the
00005 // terms of the GNU General Public License as published by the
00006 // Free Software Foundation; either version 2, or (at your option)
00007 // any later version.
00008 
00009 // This library is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 // GNU General Public License for more details.
00013 
00014 // You should have received a copy of the GNU General Public License along
00015 // with this library; see the file COPYING.  If not, write to the Free
00016 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00017 // USA.
00018 
00019 // As a special exception, you may use this file as part of a free software
00020 // library without restriction.  Specifically, if other files instantiate
00021 // templates or use macros or inline functions from this file, or you compile
00022 // this file and link it with other files to produce an executable, this
00023 // file does not by itself cause the resulting executable to be covered by
00024 // the GNU General Public License.  This exception does not however
00025 // invalidate any other reasons why the executable file might be covered by
00026 // the GNU General Public License.
00027 
00028 #include "bits/c++config.h"
00029 #include "bits/gthr.h"
00030 #include <fstream>
00031 #include <istream>
00032 #include <ostream>
00033 #include <locale>
00034 #include <ext/stdio_filebuf.h>
00035 
00036 // On AIX, and perhaps other systems, library initialization order is
00037 // not guaranteed.  For example, the static initializers for the main
00038 // program might run before the static initializers for this library.
00039 // That means that we cannot rely on static initialization in the
00040 // library; there is no guarantee that things will get initialized in
00041 // time.  This file contains definitions of all global variables that
00042 // require initialization as arrays of characters.
00043 
00044 // Because <iostream> declares the standard streams to be [io]stream
00045 // types instead of say [io]fstream types, it is also necessary to
00046 // allocate the actual file buffers in this file.
00047 namespace __gnu_cxx
00048 {
00049   using namespace std;
00050 
00051   typedef char fake_facet_name[sizeof(char*)]
00052   __attribute__ ((aligned(__alignof__(char*))));
00053   fake_facet_name facet_name[6 + _GLIBCPP_NUM_CATEGORIES];
00054 
00055   typedef char fake_locale_Impl[sizeof(locale::_Impl)]
00056   __attribute__ ((aligned(__alignof__(locale::_Impl))));
00057   fake_locale_Impl c_locale_impl;
00058 
00059 
00060   // NB: The asm directives renames these non-exported, namespace
00061   // __gnu_cxx symbols into the mistakenly exported, namespace std
00062   // symbols in GLIBCPP_3.2.
00063   // The rename syntax is 
00064   //   asm (".symver currentname,oldname@@GLIBCPP_3.2")
00065   // At the same time, these new __gnu_cxx symbols are not exported.
00066   // In the future, GLIBCXX_ABI > 5 should remove all uses of
00067   // _GLIBCPP_ASM_SYMVER in this file.
00068   typedef char fake_locale[sizeof(locale)]
00069   __attribute__ ((aligned(__alignof__(locale))));
00070   fake_locale c_locale;
00071   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx8c_localeE, _ZSt8c_locale, GLIBCPP_3.2)
00072 
00073   // GLIBCXX_ABI > 5 will not need this symbol at all.
00074   // It's here just as a placeholder, as the size of this exported
00075   // object changed. The new symbol is not exported.
00076   const int o = sizeof(locale::_Impl) - sizeof(char*[_GLIBCPP_NUM_CATEGORIES]);
00077   typedef char fake_locale_Impl_compat[o]
00078   __attribute__ ((aligned(__alignof__(o))));
00079   fake_locale_Impl_compat  c_locale_impl_compat;
00080   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx20c_locale_impl_compatE, _ZSt13c_locale_impl, GLIBCPP_3.2)
00081 
00082   typedef char fake_facet_vec[sizeof(locale::facet*)]
00083   __attribute__ ((aligned(__alignof__(locale::facet*))));
00084   fake_facet_vec facet_vec[_GLIBCPP_NUM_FACETS];
00085   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9facet_vecE, _ZSt9facet_vec, GLIBCPP_3.2)
00086 
00087   typedef char fake_ctype_c[sizeof(std::ctype<char>)]
00088   __attribute__ ((aligned(__alignof__(std::ctype<char>))));
00089   fake_ctype_c ctype_c;
00090   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx7ctype_cE, _ZSt7ctype_c, GLIBCPP_3.2)
00091 
00092   typedef char fake_collate_c[sizeof(std::collate<char>)]
00093   __attribute__ ((aligned(__alignof__(std::collate<char>))));
00094   fake_collate_c collate_c;
00095   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9collate_cE, _ZSt9collate_c, GLIBCPP_3.2)
00096 
00097   typedef char fake_numpunct_c[sizeof(numpunct<char>)]
00098   __attribute__ ((aligned(__alignof__(numpunct<char>))));
00099   fake_numpunct_c numpunct_c;
00100   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx10numpunct_cE, _ZSt10numpunct_c, GLIBCPP_3.2)
00101 
00102   typedef char fake_num_get_c[sizeof(num_get<char>)]
00103   __attribute__ ((aligned(__alignof__(num_get<char>))));
00104   fake_num_get_c num_get_c;
00105   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9num_get_cE, _ZSt9num_get_c, GLIBCPP_3.2)
00106 
00107   typedef char fake_num_put_c[sizeof(num_put<char>)]
00108   __attribute__ ((aligned(__alignof__(num_put<char>))));
00109   fake_num_put_c num_put_c;
00110   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9num_put_cE, _ZSt9num_put_c, GLIBCPP_3.2)
00111 
00112   typedef char fake_codecvt_c[sizeof(codecvt<char, char, mbstate_t>)]
00113   __attribute__ ((aligned(__alignof__(codecvt<char, char, mbstate_t>))));
00114   fake_codecvt_c codecvt_c;
00115   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9codecvt_cE, _ZSt9codecvt_c, GLIBCPP_3.2)
00116 
00117   typedef char fake_moneypunct_c[sizeof(moneypunct<char, true>)]
00118   __attribute__ ((aligned(__alignof__(moneypunct<char, true>))));
00119   fake_moneypunct_c moneypunct_tc;
00120   fake_moneypunct_c moneypunct_fc;
00121   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx13moneypunct_tcE,\
00122         _ZSt13moneypunct_tc, GLIBCPP_3.2)
00123   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx13moneypunct_fcE,\
00124         _ZSt13moneypunct_fc, GLIBCPP_3.2)
00125 
00126   typedef char fake_money_get_c[sizeof(money_get<char>)]
00127   __attribute__ ((aligned(__alignof__(money_get<char>))));
00128   fake_money_get_c money_get_c;
00129   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx11money_get_cE, _ZSt11money_get_c, GLIBCPP_3.2)
00130   
00131   typedef char fake_money_put_c[sizeof(money_put<char>)]
00132   __attribute__ ((aligned(__alignof__(money_put<char>))));
00133   fake_money_put_c money_put_c;
00134   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx11money_put_cE, _ZSt11money_put_c, GLIBCPP_3.2)
00135 
00136   typedef char fake_timepunct_c[sizeof(__timepunct<char>)]
00137   __attribute__ ((aligned(__alignof__(__timepunct<char>))));
00138   fake_timepunct_c timepunct_c;
00139   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx11timepunct_cE, _ZSt11timepunct_c, GLIBCPP_3.2)
00140 
00141   typedef char fake_time_get_c[sizeof(time_get<char>)]
00142   __attribute__ ((aligned(__alignof__(time_get<char>))));
00143   fake_time_get_c time_get_c;
00144   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx10time_get_cE, _ZSt10time_get_c, GLIBCPP_3.2)
00145 
00146   typedef char fake_time_put_c[sizeof(time_put<char>)]
00147   __attribute__ ((aligned(__alignof__(time_put<char>))));
00148   fake_time_put_c time_put_c;
00149   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx10time_put_cE, _ZSt10time_put_c, GLIBCPP_3.2)
00150 
00151   typedef char fake_messages_c[sizeof(messages<char>)]
00152   __attribute__ ((aligned(__alignof__(messages<char>))));
00153   fake_messages_c messages_c;
00154   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx10messages_cE, _ZSt10messages_c, GLIBCPP_3.2)
00155 
00156 #ifdef  _GLIBCPP_USE_WCHAR_T
00157   typedef char fake_wtype_w[sizeof(std::ctype<wchar_t>)]
00158   __attribute__ ((aligned(__alignof__(std::ctype<wchar_t>))));
00159   fake_wtype_w ctype_w;
00160   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx7ctype_wE, _ZSt7ctype_w, GLIBCPP_3.2)
00161 
00162   typedef char fake_wollate_w[sizeof(std::collate<wchar_t>)]
00163   __attribute__ ((aligned(__alignof__(std::collate<wchar_t>))));
00164   fake_wollate_w collate_w;
00165   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9collate_wE, _ZSt9collate_w, GLIBCPP_3.2)
00166 
00167   typedef char fake_numpunct_w[sizeof(numpunct<wchar_t>)]
00168   __attribute__ ((aligned(__alignof__(numpunct<wchar_t>))));
00169   fake_numpunct_w numpunct_w;
00170   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx10numpunct_wE, _ZSt10numpunct_w, GLIBCPP_3.2)
00171 
00172   typedef char fake_num_get_w[sizeof(num_get<wchar_t>)]
00173   __attribute__ ((aligned(__alignof__(num_get<wchar_t>))));
00174   fake_num_get_w num_get_w;
00175   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9num_get_wE, _ZSt9num_get_w, GLIBCPP_3.2)
00176 
00177   typedef char fake_num_put_w[sizeof(num_put<wchar_t>)]
00178   __attribute__ ((aligned(__alignof__(num_put<wchar_t>))));
00179   fake_num_put_w num_put_w;
00180   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9num_put_wE, _ZSt9num_put_w, GLIBCPP_3.2)
00181 
00182   typedef char fake_wodecvt_w[sizeof(codecvt<wchar_t, char, mbstate_t>)]
00183   __attribute__ ((aligned(__alignof__(codecvt<wchar_t, char, mbstate_t>))));
00184   fake_wodecvt_w codecvt_w;
00185   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9codecvt_wE, _ZSt9codecvt_w, GLIBCPP_3.2)
00186 
00187   typedef char fake_moneypunct_w[sizeof(moneypunct<wchar_t, true>)]
00188   __attribute__ ((aligned(__alignof__(moneypunct<wchar_t, true>))));
00189   fake_moneypunct_w moneypunct_tw;
00190   fake_moneypunct_w moneypunct_fw;
00191   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx13moneypunct_twE,\
00192         _ZSt13moneypunct_tw, GLIBCPP_3.2)
00193   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx13moneypunct_fwE,\
00194         _ZSt13moneypunct_fw, GLIBCPP_3.2)
00195 
00196   typedef char fake_money_get_w[sizeof(money_get<wchar_t>)]
00197   __attribute__ ((aligned(__alignof__(money_get<wchar_t>))));
00198   fake_money_get_w money_get_w;
00199   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx11money_get_wE, _ZSt11money_get_w, GLIBCPP_3.2)
00200   
00201   typedef char fake_money_put_w[sizeof(money_put<wchar_t>)]
00202   __attribute__ ((aligned(__alignof__(money_put<wchar_t>))));
00203   fake_money_put_w money_put_w;
00204   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx11money_put_wE, _ZSt11money_put_w, GLIBCPP_3.2)
00205 
00206   typedef char fake_timepunct_w[sizeof(__timepunct<wchar_t>)]
00207   __attribute__ ((aligned(__alignof__(__timepunct<wchar_t>))));
00208   fake_timepunct_w timepunct_w;
00209   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx11timepunct_wE, _ZSt11timepunct_w, GLIBCPP_3.2)
00210 
00211   typedef char fake_time_get_w[sizeof(time_get<wchar_t>)]
00212   __attribute__ ((aligned(__alignof__(time_get<wchar_t>))));
00213   fake_time_get_w time_get_w;
00214   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx10time_get_wE, _ZSt10time_get_w, GLIBCPP_3.2)
00215 
00216   typedef char fake_time_put_w[sizeof(time_put<wchar_t>)]
00217   __attribute__ ((aligned(__alignof__(time_put<wchar_t>))));
00218   fake_time_put_w time_put_w;
00219   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx10time_put_wE, _ZSt10time_put_w, GLIBCPP_3.2)
00220 
00221   typedef char fake_messages_w[sizeof(messages<wchar_t>)]
00222   __attribute__ ((aligned(__alignof__(messages<wchar_t>))));
00223   fake_messages_w messages_w;
00224   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx10messages_wE, _ZSt10messages_w, GLIBCPP_3.2)
00225 #endif
00226 
00227   typedef char fake_filebuf[sizeof(stdio_filebuf<char>)]
00228   __attribute__ ((aligned(__alignof__(stdio_filebuf<char>))));
00229   fake_filebuf buf_cout;
00230   fake_filebuf buf_cin;
00231   fake_filebuf buf_cerr;
00232   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx8buf_coutE, _ZSt8buf_cout, GLIBCPP_3.2)
00233   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx7buf_cinE, _ZSt7buf_cin, GLIBCPP_3.2)
00234   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx8buf_cerrE, _ZSt8buf_cerr, GLIBCPP_3.2)
00235 
00236 #ifdef _GLIBCPP_USE_WCHAR_T
00237   typedef char fake_wfilebuf[sizeof(stdio_filebuf<wchar_t>)]
00238   __attribute__ ((aligned(__alignof__(stdio_filebuf<wchar_t>))));
00239   fake_wfilebuf buf_wcout;
00240   fake_wfilebuf buf_wcin;
00241   fake_wfilebuf buf_wcerr;
00242   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9buf_wcoutE, _ZSt9buf_wcout, GLIBCPP_3.2)
00243   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx8buf_wcinE, _ZSt8buf_wcin, GLIBCPP_3.2)
00244   _GLIBCPP_ASM_SYMVER(_ZN9__gnu_cxx9buf_wcerrE, _ZSt9buf_wcerr, GLIBCPP_3.2)
00245 #endif
00246 } // namespace __gnu_cxx
00247 
00248 namespace std
00249 {
00250   // Globals for once-only runtime initialization of mutex objects.  This
00251   // allows static initialization of these objects on systems that need a
00252   // function call to initialize a mutex.  For example, see stl_threads.h.
00253 #ifdef __GTHREAD_MUTEX_INIT
00254   // Need to provide explicit instantiations of static data for
00255   // systems with broken weak linkage support.
00256   template __gthread_mutex_t _Swap_lock_struct<0>::_S_swap_lock;
00257 #elif defined(__GTHREAD_MUTEX_INIT_FUNCTION)
00258   __gthread_once_t _GLIBCPP_once = __GTHREAD_ONCE_INIT;
00259   __gthread_mutex_t _GLIBCPP_mutex;
00260   __gthread_mutex_t *_GLIBCPP_mutex_address;
00261   
00262   // Once-only initializer function for _GLIBCPP_mutex.  
00263   void
00264   _GLIBCPP_mutex_init ()
00265   { __GTHREAD_MUTEX_INIT_FUNCTION (&_GLIBCPP_mutex); }
00266 
00267   // Once-only initializer function for _GLIBCPP_mutex_address.  
00268   void
00269   _GLIBCPP_mutex_address_init ()
00270   { __GTHREAD_MUTEX_INIT_FUNCTION (_GLIBCPP_mutex_address); }
00271 #endif
00272 
00273   // Standard stream objects.
00274   typedef char fake_istream[sizeof(istream)]
00275   __attribute__ ((aligned(__alignof__(istream))));
00276   typedef char fake_ostream[sizeof(ostream)] 
00277   __attribute__ ((aligned(__alignof__(ostream))));
00278   fake_istream cin;
00279   fake_ostream cout;
00280   fake_ostream cerr;
00281   fake_ostream clog;
00282 
00283 #ifdef _GLIBCPP_USE_WCHAR_T
00284   typedef char fake_wistream[sizeof(wistream)] 
00285   __attribute__ ((aligned(__alignof__(wistream))));
00286   typedef char fake_wostream[sizeof(wostream)] 
00287   __attribute__ ((aligned(__alignof__(wostream))));
00288   fake_wistream wcin;
00289   fake_wostream wcout;
00290   fake_wostream wcerr;
00291   fake_wostream wclog;
00292 #endif
00293 } // namespace std

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