external/bsd/libc++/dist/libcxx/src/iostream.cpp

   1 //===------------------------ iostream.cpp --------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "__std_stream"
  11 #include "string"
  12 #include "new"
  13
  14 _LIBCPP_BEGIN_NAMESPACE_STD
  15
  16 static mbstate_t state_types[6] = {};
  17
  18 _ALIGNAS_TYPE (__stdinbuf<char> ) static char __cin [sizeof(__stdinbuf <char>)];
  19 _ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)];
  20 _ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)];
  21 _ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin [sizeof(__stdinbuf <wchar_t>)];
  22 _ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)];
  23 _ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)];
  24
  25 _ALIGNAS_TYPE (istream)  _LIBCPP_FUNC_VIS char cin [sizeof(istream)];
  26 _ALIGNAS_TYPE (ostream)  _LIBCPP_FUNC_VIS char cout[sizeof(ostream)];
  27 _ALIGNAS_TYPE (ostream)  _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)];
  28 _ALIGNAS_TYPE (ostream)  _LIBCPP_FUNC_VIS char clog[sizeof(ostream)];
  29 _ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin [sizeof(wistream)];
  30 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)];
  31 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)];
  32 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)];
  33
  34 ios_base::Init __start_std_streams;
  35
  36 ios_base::Init::Init()
  37 {
  38     istream* cin_ptr  = ::new(cin)  istream(::new(__cin)  __stdinbuf <char>(stdin, state_types+0) );
  39     ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, state_types+1));
  40     ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, state_types+2));
  41                         ::new(clog) ostream(cerr_ptr->rdbuf());
  42     cin_ptr->tie(cout_ptr);
  43     _VSTD::unitbuf(*cerr_ptr);
  44     cerr_ptr->tie(cout_ptr);
  45
  46     wistream* wcin_ptr  = ::new(wcin)  wistream(::new(__wcin)  __stdinbuf <wchar_t>(stdin, state_types+3) );
  47     wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, state_types+4));
  48     wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, state_types+5));
  49                           ::new(wclog) wostream(wcerr_ptr->rdbuf());
  50     wcin_ptr->tie(wcout_ptr);
  51     _VSTD::unitbuf(*wcerr_ptr);
  52     wcerr_ptr->tie(wcout_ptr);
  53 }
  54
  55 ios_base::Init::~Init()
  56 {
  57     ostream* cout_ptr = reinterpret_cast<ostream*>(cout);
  58     ostream* clog_ptr = reinterpret_cast<ostream*>(clog);
  59     cout_ptr->flush();
  60     clog_ptr->flush();
  61
  62     wostream* wcout_ptr = reinterpret_cast<wostream*>(wcout);
  63     wostream* wclog_ptr = reinterpret_cast<wostream*>(wclog);
  64     wcout_ptr->flush();
  65     wclog_ptr->flush();
  66 }
  67
  68 _LIBCPP_END_NAMESPACE_STD