# 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 std
    00048 {
    00049   // Standard "C" locale.
    00050   typedef char fake_locale[sizeof(locale)]
    00051   __attribute__ ((aligned(__alignof__(locale))));
    00052   fake_locale c_locale;
    00053
    00054   typedef char fake_locale_Impl[sizeof(locale::_Impl)]
    00055   __attribute__ ((aligned(__alignof__(locale::_Impl))));
    00056   fake_locale_Impl c_locale_impl;
    00057
    00058   typedef char fake_facet_vec[sizeof(locale::facet*)]
    00059   __attribute__ ((aligned(__alignof__(locale::facet*))));
    00060   fake_facet_vec facet_vec[_GLIBCPP_NUM_FACETS];
    00061
    00062   typedef char fake_ctype_c[sizeof(std::ctype<char>)]
    00063   __attribute__ ((aligned(__alignof__(std::ctype<char>))));
    00064   fake_ctype_c ctype_c;
    00065
    00066   typedef char fake_collate_c[sizeof(std::collate<char>)]
    00067   __attribute__ ((aligned(__alignof__(std::collate<char>))));
    00068   fake_collate_c collate_c;
    00069
    00070   typedef char fake_numpunct_c[sizeof(numpunct<char>)]
    00071   __attribute__ ((aligned(__alignof__(numpunct<char>))));
    00072   fake_numpunct_c numpunct_c;
    00073
    00074   typedef char fake_num_get_c[sizeof(num_get<char>)]
    00075   __attribute__ ((aligned(__alignof__(num_get<char>))));
    00076   fake_num_get_c num_get_c;
    00077
    00078   typedef char fake_num_put_c[sizeof(num_put<char>)]
    00079   __attribute__ ((aligned(__alignof__(num_put<char>))));
    00080   fake_num_put_c num_put_c;
    00081
    00082   typedef char fake_codecvt_c[sizeof(codecvt<char, char, mbstate_t>)]
    00083   __attribute__ ((aligned(__alignof__(codecvt<char, char, mbstate_t>))));
    00084   fake_codecvt_c codecvt_c;
    00085
    00086   typedef char fake_moneypunct_c[sizeof(moneypunct<char, true>)]
    00087   __attribute__ ((aligned(__alignof__(moneypunct<char, true>))));
    00088   fake_moneypunct_c moneypunct_tc;
    00089   fake_moneypunct_c moneypunct_fc;
    00090
    00091   typedef char fake_money_get_c[sizeof(money_get<char>)]
    00092   __attribute__ ((aligned(__alignof__(money_get<char>))));
    00093   fake_money_get_c money_get_c;
    00094
    00095   typedef char fake_money_put_c[sizeof(money_put<char>)]
    00096   __attribute__ ((aligned(__alignof__(money_put<char>))));
    00097   fake_money_put_c money_put_c;
    00098
    00099   typedef char fake_timepunct_c[sizeof(__timepunct<char>)]
    00100   __attribute__ ((aligned(__alignof__(__timepunct<char>))));
    00101   fake_timepunct_c timepunct_c;
    00102
    00103   typedef char fake_time_get_c[sizeof(time_get<char>)]
    00104   __attribute__ ((aligned(__alignof__(time_get<char>))));
    00105   fake_time_get_c time_get_c;
    00106
    00107   typedef char fake_time_put_c[sizeof(time_put<char>)]
    00108   __attribute__ ((aligned(__alignof__(time_put<char>))));
    00109   fake_time_put_c time_put_c;
    00110
    00111   typedef char fake_messages_c[sizeof(messages<char>)]
    00112   __attribute__ ((aligned(__alignof__(messages<char>))));
    00113   fake_messages_c messages_c;
    00114
    00115 #ifdef  _GLIBCPP_USE_WCHAR_T
    00116   typedef char fake_wtype_w[sizeof(std::ctype<wchar_t>)]
    00117   __attribute__ ((aligned(__alignof__(std::ctype<wchar_t>))));
    00118   fake_wtype_w ctype_w;
    00119
    00120   typedef char fake_wollate_w[sizeof(std::collate<wchar_t>)]
    00121   __attribute__ ((aligned(__alignof__(std::collate<wchar_t>))));
    00122   fake_wollate_w collate_w;
    00123
    00124   typedef char fake_numpunct_w[sizeof(numpunct<wchar_t>)]
    00125   __attribute__ ((aligned(__alignof__(numpunct<wchar_t>))));
    00126   fake_numpunct_w numpunct_w;
    00127
    00128   typedef char fake_num_get_w[sizeof(num_get<wchar_t>)]
    00129   __attribute__ ((aligned(__alignof__(num_get<wchar_t>))));
    00130   fake_num_get_w num_get_w;
    00131
    00132   typedef char fake_num_put_w[sizeof(num_put<wchar_t>)]
    00133   __attribute__ ((aligned(__alignof__(num_put<wchar_t>))));
    00134   fake_num_put_w num_put_w;
    00135
    00136   typedef char fake_wodecvt_w[sizeof(codecvt<wchar_t, char, mbstate_t>)]
    00137   __attribute__ ((aligned(__alignof__(codecvt<wchar_t, char, mbstate_t>))));
    00138   fake_wodecvt_w codecvt_w;
    00139
    00140   typedef char fake_moneypunct_w[sizeof(moneypunct<wchar_t, true>)]
    00141   __attribute__ ((aligned(__alignof__(moneypunct<wchar_t, true>))));
    00142   fake_moneypunct_w moneypunct_tw;
    00143   fake_moneypunct_w moneypunct_fw;
    00144
    00145   typedef char fake_money_get_w[sizeof(money_get<wchar_t>)]
    00146   __attribute__ ((aligned(__alignof__(money_get<wchar_t>))));
    00147   fake_money_get_w money_get_w;
    00148
    00149   typedef char fake_money_put_w[sizeof(money_put<wchar_t>)]
    00150   __attribute__ ((aligned(__alignof__(money_put<wchar_t>))));
    00151   fake_money_put_w money_put_w;
    00152
    00153   typedef char fake_timepunct_w[sizeof(__timepunct<wchar_t>)]
    00154   __attribute__ ((aligned(__alignof__(__timepunct<wchar_t>))));
    00155   fake_timepunct_w timepunct_w;
    00156
    00157   typedef char fake_time_get_w[sizeof(time_get<wchar_t>)]
    00158   __attribute__ ((aligned(__alignof__(time_get<wchar_t>))));
    00159   fake_time_get_w time_get_w;
    00160
    00161   typedef char fake_time_put_w[sizeof(time_put<wchar_t>)]
    00162   __attribute__ ((aligned(__alignof__(time_put<wchar_t>))));
    00163   fake_time_put_w time_put_w;
    00164
    00165   typedef char fake_messages_w[sizeof(messages<wchar_t>)]
    00166   __attribute__ ((aligned(__alignof__(messages<wchar_t>))));
    00167   fake_messages_w messages_w;
    00168 #endif
    00169
    00170   // Standard stream objects.
    00171   typedef char fake_istream[sizeof(istream)]
    00172   __attribute__ ((aligned(__alignof__(istream))));
    00173   typedef char fake_ostream[sizeof(ostream)]
    00174   __attribute__ ((aligned(__alignof__(ostream))));
    00175   fake_istream cin;
    00176   fake_ostream cout;
    00177   fake_ostream cerr;
    00178   fake_ostream clog;
    00179
    00180   typedef char fake_filebuf[sizeof(__gnu_cxx::stdio_filebuf<char>)]
    00181   __attribute__ ((aligned(__alignof__(__gnu_cxx::stdio_filebuf<char>))));
    00182   fake_filebuf buf_cout;
    00183   fake_filebuf buf_cin;
    00184   fake_filebuf buf_cerr;
    00185
    00186 #ifdef _GLIBCPP_USE_WCHAR_T
    00187   typedef char fake_wistream[sizeof(wistream)]
    00188   __attribute__ ((aligned(__alignof__(wistream))));
    00189   typedef char fake_wostream[sizeof(wostream)]
    00190   __attribute__ ((aligned(__alignof__(wostream))));
    00191   fake_wistream wcin;
    00192   fake_wostream wcout;
    00193   fake_wostream wcerr;
    00194   fake_wostream wclog;
    00195
    00196   typedef char fake_wfilebuf[sizeof(__gnu_cxx::stdio_filebuf<wchar_t>)]
    00197   __attribute__ ((aligned(__alignof__(__gnu_cxx::stdio_filebuf<wchar_t>))));
    00198   fake_wfilebuf buf_wcout;
    00199   fake_wfilebuf buf_wcin;
    00200   fake_wfilebuf buf_wcerr;
    00201 #endif
    00202
    00203
    00204   // Globals for once-only runtime initialization of mutex objects.  This
    00205   // allows static initialization of these objects on systems that need a
    00206   // function call to initialize a mutex.  For example, see stl_threads.h.
    00207 #ifdef __GTHREAD_MUTEX_INIT
    00208   // Need to provide explicit instantiations of static data for
    00209   // systems with broken weak linkage support.
    00210   template __gthread_mutex_t _Swap_lock_struct<0>::_S_swap_lock;
    00211 #elif defined(__GTHREAD_MUTEX_INIT_FUNCTION)
    00212   __gthread_once_t _GLIBCPP_once = __GTHREAD_ONCE_INIT;
    00213   __gthread_mutex_t _GLIBCPP_mutex;
    00214   __gthread_mutex_t *_GLIBCPP_mutex_address;
    00215
    00216   // Once-only initializer function for _GLIBCPP_mutex.
    00217   void
    00218   _GLIBCPP_mutex_init ()
    00219   { __GTHREAD_MUTEX_INIT_FUNCTION (&_GLIBCPP_mutex); }
    00220
    00221   // Once-only initializer function for _GLIBCPP_mutex_address.
    00222   void
    00223   _GLIBCPP_mutex_address_init ()
    00224   { __GTHREAD_MUTEX_INIT_FUNCTION (_GLIBCPP_mutex_address); }
    00225 #endif
    00226 }