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>)]; 19static 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>)]; 22static 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>)]; 28static 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>)]; 31static 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>)]; 36static 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>)]; 39static 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 44ios_base::Init __start_std_streams; 45 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 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