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// Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 2, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// As a special exception, you may use this file as part of a free software

// library without restriction.  Specifically, if other files instantiate

// templates or use macros or inline functions from this file, or you compile

// this file and link it with other files to produce an executable, this

// file does not by itself cause the resulting executable to be covered by

// the GNU General Public License.  This exception does not however

// invalidate any other reasons why the executable file might be covered by

// the GNU General Public License.

#include "bits/c++config.h"

#include "bits/gthr.h"

#include <fstream>

#include <istream>

#include <ostream>

#include <ext/stdio_filebuf.h>

#include <ext/stdio_sync_filebuf.h>

// On AIX, and perhaps other systems, library initialization order is

// not guaranteed.  For example, the static initializers for the main

// program might run before the static initializers for this library.

// That means that we cannot rely on static initialization in the

// library; there is no guarantee that things will get initialized in

// time.  This file contains definitions of all global variables that

// require initialization as arrays of characters.

// NB: asm directives can rename these non-exported, namespace

// __gnu_cxx symbols into exported, namespace std symbols with the

// appropriate symbol version name.

// The rename syntax is 

//   asm (".symver currentname,oldname@@GLIBCXX_3.2")

// In macro form:

// _GLIBCXX_ASM_SYMVER(currentname, oldname, GLIBCXX_3.2)

namespace std

{

  // Standard stream objects.

  // NB: Iff <iostream> is included, these definitions become wonky.

  typedef char fake_istream[sizeof(istream)]

  __attribute__ ((aligned(__alignof__(istream))));

  typedef char fake_ostream[sizeof(ostream)]

  __attribute__ ((aligned(__alignof__(ostream))));

  fake_istream cin;

  fake_ostream cout;

  fake_ostream cerr;

  fake_ostream clog;

#ifdef _GLIBCXX_USE_WCHAR_T

  typedef char fake_wistream[sizeof(wistream)]

  __attribute__ ((aligned(__alignof__(wistream))));

  typedef char fake_wostream[sizeof(wostream)]

  __attribute__ ((aligned(__alignof__(wostream))));

  fake_wistream wcin;

  fake_wostream wcout;

  fake_wostream wcerr;

  fake_wostream wclog;

#endif

} // namespace std

namespace __gnu_internal

{

  using namespace std;

  using namespace __gnu_cxx;

  // We use different stream buffer types depending on whether

  // ios_base::sync_with_stdio(false) has been called.

  typedef char fake_stdiobuf[sizeof(stdio_sync_filebuf<char>)]

  __attribute__ ((aligned(__alignof__(stdio_sync_filebuf<char>))));

  fake_stdiobuf buf_cout_sync;

  fake_stdiobuf buf_cin_sync;

  fake_stdiobuf buf_cerr_sync;

  typedef char fake_filebuf[sizeof(stdio_filebuf<char>)]

  __attribute__ ((aligned(__alignof__(stdio_filebuf<char>))));

  fake_filebuf buf_cout;

  fake_filebuf buf_cin;

  fake_filebuf buf_cerr;

#ifdef _GLIBCXX_USE_WCHAR_T

  typedef char fake_wstdiobuf[sizeof(stdio_sync_filebuf<wchar_t>)]

  __attribute__ ((aligned(__alignof__(stdio_sync_filebuf<wchar_t>))));

  fake_wstdiobuf buf_wcout_sync;

  fake_wstdiobuf buf_wcin_sync;

  fake_wstdiobuf buf_wcerr_sync;

  typedef char fake_wfilebuf[sizeof(stdio_filebuf<wchar_t>)]

  __attribute__ ((aligned(__alignof__(stdio_filebuf<wchar_t>))));

  fake_wfilebuf buf_wcout;

  fake_wfilebuf buf_wcin;

  fake_wfilebuf buf_wcerr;

#endif

  // Globals for once-only runtime initialization of mutex objects.  This

  // allows static initialization of these objects on systems that need a

  // function call to initialize a mutex.  For example, see stl_threads.h.

#ifdef __GTHREAD_MUTEX_INIT

#elif defined(__GTHREAD_MUTEX_INIT_FUNCTION)

  __gthread_once_t _GLIBCXX_once = __GTHREAD_ONCE_INIT;

  __gthread_mutex_t _GLIBCXX_mutex;

  __gthread_mutex_t *_GLIBCXX_mutex_address;

  // Once-only initializer function for _GLIBCXX_mutex.  

  void

  _GLIBCXX_mutex_init ()

  { __GTHREAD_MUTEX_INIT_FUNCTION (&_GLIBCXX_mutex); }

  // Once-only initializer function for _GLIBCXX_mutex_address.  

  void

  _GLIBCXX_mutex_address_init ()

  { __GTHREAD_MUTEX_INIT_FUNCTION (_GLIBCXX_mutex_address); }

#endif

} // namespace __gnu_internal