1 //===----------------------------------------------------------------------===// 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 "__locale" 11 #include "string" 12 #include "new" 13 14 #define _str(s) #s 15 #define str(s) _str(s) 16 #define _LIBCPP_ABI_NAMESPACE_STR str(_LIBCPP_ABI_NAMESPACE) 17 18 _LIBCPP_BEGIN_NAMESPACE_STD 19 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 28 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 29 _ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin[sizeof(wistream)] 30 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 31 __asm__("?wcin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 32 #endif 33 ; 34 _ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin[sizeof(__stdinbuf <wchar_t>)]; 35 static mbstate_t mb_wcin; 36 #endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 37 38 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cout[sizeof(ostream)] 39 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 40 __asm__("?cout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 41 #endif 42 ; 43 _ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)]; 44 static mbstate_t mb_cout; 45 46 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 47 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)] 48 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 49 __asm__("?wcout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 50 #endif 51 ; 52 _ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)]; 53 static mbstate_t mb_wcout; 54 #endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 55 56 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)] 57 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 58 __asm__("?cerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 59 #endif 60 ; 61 _ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)]; 62 static mbstate_t mb_cerr; 63 64 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 65 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)] 66 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 67 __asm__("?wcerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 68 #endif 69 ; 70 _ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)]; 71 static mbstate_t mb_wcerr; 72 #endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 73 74 _ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char clog[sizeof(ostream)] 75 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 76 __asm__("?clog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 77 #endif 78 ; 79 80 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 81 _ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)] 82 #if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 83 __asm__("?wclog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 84 #endif 85 ; 86 #endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 87 88 // Hacky way to make the compiler believe that we're inside a system header so 89 // it doesn't flag the use of the init_priority attribute with a value that's 90 // reserved for the implementation (we're the implementation). 91 # 80 "iostream.cpp" 1 3 92 _LIBCPP_HIDDEN ios_base::Init __start_std_streams _LIBCPP_INIT_PRIORITY_MAX; 93 # 82 "iostream.cpp" 2 94 95 // On Windows the TLS storage for locales needs to be initialized before we create 96 // the standard streams, otherwise it may not be alive during program termination 97 // when we flush the streams. 98 static void force_locale_initialization() { 99 #if defined(_LIBCPP_MSVCRT_LIKE) 100 static bool once = []() { 101 auto loc = newlocale(LC_ALL_MASK, "C", 0); 102 { 103 __libcpp_locale_guard g(loc); // forces initialization of locale TLS 104 ((void)g); 105 } 106 freelocale(loc); 107 return true; 108 }(); 109 ((void)once); 110 #endif 111 } 112 113 class DoIOSInit { 114 public: 115 DoIOSInit(); 116 ~DoIOSInit(); 117 }; 118 119 DoIOSInit::DoIOSInit() 120 { 121 force_locale_initialization(); 122 123 istream* cin_ptr = ::new(cin) istream(::new(__cin) __stdinbuf <char>(stdin, &mb_cin)); 124 ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, &mb_cout)); 125 ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, &mb_cerr)); 126 ::new(clog) ostream(cerr_ptr->rdbuf()); 127 cin_ptr->tie(cout_ptr); 128 _VSTD::unitbuf(*cerr_ptr); 129 cerr_ptr->tie(cout_ptr); 130 131 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 132 wistream* wcin_ptr = ::new(wcin) wistream(::new(__wcin) __stdinbuf <wchar_t>(stdin, &mb_wcin)); 133 wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, &mb_wcout)); 134 wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, &mb_wcerr)); 135 ::new(wclog) wostream(wcerr_ptr->rdbuf()); 136 137 wcin_ptr->tie(wcout_ptr); 138 _VSTD::unitbuf(*wcerr_ptr); 139 wcerr_ptr->tie(wcout_ptr); 140 #endif 141 } 142 143 DoIOSInit::~DoIOSInit() 144 { 145 ostream* cout_ptr = reinterpret_cast<ostream*>(cout); 146 cout_ptr->flush(); 147 ostream* clog_ptr = reinterpret_cast<ostream*>(clog); 148 clog_ptr->flush(); 149 150 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 151 wostream* wcout_ptr = reinterpret_cast<wostream*>(wcout); 152 wcout_ptr->flush(); 153 wostream* wclog_ptr = reinterpret_cast<wostream*>(wclog); 154 wclog_ptr->flush(); 155 #endif 156 } 157 158 ios_base::Init::Init() 159 { 160 static DoIOSInit init_the_streams; // gets initialized once 161 } 162 163 ios_base::Init::~Init() 164 { 165 } 166 167 _LIBCPP_END_NAMESPACE_STD 168