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 #ifndef _LIBCPP_HAS_NO_STDIN 17 _ALIGNAS_TYPE (istream) _LIBCPP_FUNC_VIS char cin [sizeof(istream)]; 18 _ALIGNAS_TYPE (__stdinbuf<char> ) static char __cin [sizeof(__stdinbuf <char>)]; 19 static mbstate_t mb_cin; 20 _ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin [sizeof(wistream)]; 21 _ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin [sizeof(__stdinbuf <wchar_t>)]; 22 static mbstate_t mb_wcin; 23 #endif 24 25 #ifndef _LIBCPP_HAS_NO_STDOUT 26 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cout[sizeof(ostream)]; 27 _ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)]; 28 static mbstate_t mb_cout; 29 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)]; 30 _ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)]; 31 static mbstate_t mb_wcout; 32 #endif 33 34 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)]; 35 _ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)]; 36 static mbstate_t mb_cerr; 37 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)]; 38 _ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)]; 39 static mbstate_t mb_wcerr; 40 41 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char clog[sizeof(ostream)]; 42 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)]; 43 44 ios_base::Init __start_std_streams; 45 Init()46ios_base::Init::Init() 47 { 48 #ifndef _LIBCPP_HAS_NO_STDIN 49 istream* cin_ptr = ::new(cin) istream(::new(__cin) __stdinbuf <char>(stdin, &mb_cin)); 50 wistream* wcin_ptr = ::new(wcin) wistream(::new(__wcin) __stdinbuf <wchar_t>(stdin, &mb_wcin)); 51 #endif 52 #ifndef _LIBCPP_HAS_NO_STDOUT 53 ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, &mb_cout)); 54 wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, &mb_wcout)); 55 #endif 56 ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, &mb_cerr)); 57 ::new(clog) ostream(cerr_ptr->rdbuf()); 58 wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, &mb_wcerr)); 59 ::new(wclog) wostream(wcerr_ptr->rdbuf()); 60 61 #if !defined(_LIBCPP_HAS_NO_STDIN) && !defined(_LIBCPP_HAS_NO_STDOUT) 62 cin_ptr->tie(cout_ptr); 63 wcin_ptr->tie(wcout_ptr); 64 #endif 65 _VSTD::unitbuf(*cerr_ptr); 66 _VSTD::unitbuf(*wcerr_ptr); 67 #ifndef _LIBCPP_HAS_NO_STDOUT 68 cerr_ptr->tie(cout_ptr); 69 wcerr_ptr->tie(wcout_ptr); 70 #endif 71 } 72 ~Init()73ios_base::Init::~Init() 74 { 75 #ifndef _LIBCPP_HAS_NO_STDOUT 76 ostream* cout_ptr = reinterpret_cast<ostream*>(cout); 77 wostream* wcout_ptr = reinterpret_cast<wostream*>(wcout); 78 cout_ptr->flush(); 79 wcout_ptr->flush(); 80 #endif 81 82 ostream* clog_ptr = reinterpret_cast<ostream*>(clog); 83 wostream* wclog_ptr = reinterpret_cast<wostream*>(wclog); 84 clog_ptr->flush(); 85 wclog_ptr->flush(); 86 } 87 88 _LIBCPP_END_NAMESPACE_STD 89