1 //===------------------------ iostream.cpp --------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "__std_stream" 10 #include "string" 11 #include "new" 12 13 #define _str(s) #s 14 #define str(s) _str(s) 15 #define _LIBCPP_ABI_NAMESPACE_STR str(_LIBCPP_ABI_NAMESPACE) 16 17 _LIBCPP_BEGIN_NAMESPACE_STD 18 19 #ifndef _LIBCPP_HAS_NO_STDIN 20 _ALIGNAS_TYPE (istream) _LIBCPP_FUNC_VIS char cin[sizeof(istream)] 21 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 22 __asm__("?cin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 23 #endif 24 ; 25 _ALIGNAS_TYPE (__stdinbuf<char> ) static char __cin[sizeof(__stdinbuf <char>)]; 26 static mbstate_t mb_cin; 27 _ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin[sizeof(wistream)] 28 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 29 __asm__("?wcin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 30 #endif 31 ; 32 _ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin[sizeof(__stdinbuf <wchar_t>)]; 33 static mbstate_t mb_wcin; 34 #endif 35 36 #ifndef _LIBCPP_HAS_NO_STDOUT 37 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cout[sizeof(ostream)] 38 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 39 __asm__("?cout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 40 #endif 41 ; 42 _ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)]; 43 static mbstate_t mb_cout; 44 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)] 45 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 46 __asm__("?wcout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 47 #endif 48 ; 49 _ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)]; 50 static mbstate_t mb_wcout; 51 #endif 52 53 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)] 54 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 55 __asm__("?cerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 56 #endif 57 ; 58 _ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)]; 59 static mbstate_t mb_cerr; 60 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)] 61 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 62 __asm__("?wcerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 63 #endif 64 ; 65 _ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)]; 66 static mbstate_t mb_wcerr; 67 68 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char clog[sizeof(ostream)] 69 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 70 __asm__("?clog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 71 #endif 72 ; 73 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)] 74 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 75 __asm__("?wclog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 76 #endif 77 ; 78 79 _LIBCPP_HIDDEN ios_base::Init __start_std_streams; 80 81 ios_base::Init::Init() 82 { 83 #ifndef _LIBCPP_HAS_NO_STDIN 84 istream* cin_ptr = ::new(cin) istream(::new(__cin) __stdinbuf <char>(stdin, &mb_cin)); 85 wistream* wcin_ptr = ::new(wcin) wistream(::new(__wcin) __stdinbuf <wchar_t>(stdin, &mb_wcin)); 86 #endif 87 #ifndef _LIBCPP_HAS_NO_STDOUT 88 ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, &mb_cout)); 89 wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, &mb_wcout)); 90 #endif 91 ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, &mb_cerr)); 92 ::new(clog) ostream(cerr_ptr->rdbuf()); 93 wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, &mb_wcerr)); 94 ::new(wclog) wostream(wcerr_ptr->rdbuf()); 95 96 #if !defined(_LIBCPP_HAS_NO_STDIN) && !defined(_LIBCPP_HAS_NO_STDOUT) 97 cin_ptr->tie(cout_ptr); 98 wcin_ptr->tie(wcout_ptr); 99 #endif 100 _VSTD::unitbuf(*cerr_ptr); 101 _VSTD::unitbuf(*wcerr_ptr); 102 #ifndef _LIBCPP_HAS_NO_STDOUT 103 cerr_ptr->tie(cout_ptr); 104 wcerr_ptr->tie(wcout_ptr); 105 #endif 106 } 107 108 ios_base::Init::~Init() 109 { 110 #ifndef _LIBCPP_HAS_NO_STDOUT 111 ostream* cout_ptr = reinterpret_cast<ostream*>(cout); 112 wostream* wcout_ptr = reinterpret_cast<wostream*>(wcout); 113 cout_ptr->flush(); 114 wcout_ptr->flush(); 115 #endif 116 117 ostream* clog_ptr = reinterpret_cast<ostream*>(clog); 118 wostream* wclog_ptr = reinterpret_cast<wostream*>(wclog); 119 clog_ptr->flush(); 120 wclog_ptr->flush(); 121 } 122 123 _LIBCPP_END_NAMESPACE_STD 124