172445Sassar//===----------------------------------------------------------------------===// 2233294Sstas// 372445Sassar// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 472445Sassar// See https://llvm.org/LICENSE.txt for license information. 572445Sassar// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 672445Sassar// 772445Sassar//===----------------------------------------------------------------------===// 872445Sassar 972445Sassar#include <__locale> 1072445Sassar#include <__std_stream> 1172445Sassar#include <new> 1272445Sassar#include <string> 1372445Sassar 1472445Sassar#define _str(s) #s 1572445Sassar#define str(s) _str(s) 1672445Sassar#define _LIBCPP_ABI_NAMESPACE_STR str(_LIBCPP_ABI_NAMESPACE) 1772445Sassar 1872445Sassar_LIBCPP_BEGIN_NAMESPACE_STD 1972445Sassar 2072445Sassar_ALIGNAS_TYPE (istream) _LIBCPP_FUNC_VIS char cin[sizeof(istream)] 2172445Sassar#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 2272445Sassar__asm__("?cin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 2372445Sassar#endif 2472445Sassar; 2572445Sassar_ALIGNAS_TYPE (__stdinbuf<char> ) static char __cin[sizeof(__stdinbuf <char>)]; 2672445Sassarstatic mbstate_t mb_cin; 2772445Sassar 2872445Sassar#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 2972445Sassar_ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin[sizeof(wistream)] 3072445Sassar#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 3172445Sassar__asm__("?wcin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 3272445Sassar#endif 3372445Sassar; 34233294Sstas_ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin[sizeof(__stdinbuf <wchar_t>)]; 3572445Sassarstatic mbstate_t mb_wcin; 3672445Sassar#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 3772445Sassar 3872445Sassar_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cout[sizeof(ostream)] 3972445Sassar#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 4072445Sassar__asm__("?cout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 4172445Sassar#endif 4272445Sassar; 4372445Sassar_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)]; 4472445Sassarstatic mbstate_t mb_cout; 4572445Sassar 4672445Sassar#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 4772445Sassar_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)] 4872445Sassar#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 49178825Sdfr__asm__("?wcout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 50178825Sdfr#endif 51233294Sstas; 52233294Sstas_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)]; 53178825Sdfrstatic mbstate_t mb_wcout; 54178825Sdfr#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 55233294Sstas 56178825Sdfr_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)] 57178825Sdfr#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 58178825Sdfr__asm__("?cerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 59233294Sstas#endif 60178825Sdfr; 6172445Sassar_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)]; 62178825Sdfrstatic mbstate_t mb_cerr; 63233294Sstas 64178825Sdfr#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 6572445Sassar_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)] 66178825Sdfr#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 67233294Sstas__asm__("?wcerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 68178825Sdfr#endif 6972445Sassar; 70178825Sdfr_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)]; 71233294Sstasstatic mbstate_t mb_wcerr; 72178825Sdfr#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 7372445Sassar 74233294Sstas_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char clog[sizeof(ostream)] 75178825Sdfr#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 7672445Sassar__asm__("?clog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 77178825Sdfr#endif 78233294Sstas; 79178825Sdfr 8072445Sassar#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 81178825Sdfr_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)] 82233294Sstas#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__) 83178825Sdfr__asm__("?wclog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A") 8472445Sassar#endif 85178825Sdfr; 86233294Sstas#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 87178825Sdfr 8872445Sassar// Pretend we're inside a system header so the compiler doesn't flag the use of the init_priority 8972445Sassar// attribute with a value that's reserved for the implementation (we're the implementation). 9072445Sassar#include "iostream_init.h" 91 92// On Windows the TLS storage for locales needs to be initialized before we create 93// the standard streams, otherwise it may not be alive during program termination 94// when we flush the streams. 95static void force_locale_initialization() { 96#if defined(_LIBCPP_MSVCRT_LIKE) 97 static bool once = []() { 98 auto loc = newlocale(LC_ALL_MASK, "C", 0); 99 { 100 __libcpp_locale_guard g(loc); // forces initialization of locale TLS 101 ((void)g); 102 } 103 freelocale(loc); 104 return true; 105 }(); 106 ((void)once); 107#endif 108} 109 110class DoIOSInit { 111public: 112 DoIOSInit(); 113 ~DoIOSInit(); 114}; 115 116DoIOSInit::DoIOSInit() 117{ 118 force_locale_initialization(); 119 120 istream* cin_ptr = ::new(cin) istream(::new(__cin) __stdinbuf <char>(stdin, &mb_cin)); 121 ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, &mb_cout)); 122 ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, &mb_cerr)); 123 ::new(clog) ostream(cerr_ptr->rdbuf()); 124 cin_ptr->tie(cout_ptr); 125 _VSTD::unitbuf(*cerr_ptr); 126 cerr_ptr->tie(cout_ptr); 127 128#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 129 wistream* wcin_ptr = ::new(wcin) wistream(::new(__wcin) __stdinbuf <wchar_t>(stdin, &mb_wcin)); 130 wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, &mb_wcout)); 131 wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, &mb_wcerr)); 132 ::new(wclog) wostream(wcerr_ptr->rdbuf()); 133 134 wcin_ptr->tie(wcout_ptr); 135 _VSTD::unitbuf(*wcerr_ptr); 136 wcerr_ptr->tie(wcout_ptr); 137#endif 138} 139 140DoIOSInit::~DoIOSInit() 141{ 142 ostream* cout_ptr = reinterpret_cast<ostream*>(cout); 143 cout_ptr->flush(); 144 ostream* clog_ptr = reinterpret_cast<ostream*>(clog); 145 clog_ptr->flush(); 146 147#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 148 wostream* wcout_ptr = reinterpret_cast<wostream*>(wcout); 149 wcout_ptr->flush(); 150 wostream* wclog_ptr = reinterpret_cast<wostream*>(wclog); 151 wclog_ptr->flush(); 152#endif 153} 154 155ios_base::Init::Init() 156{ 157 static DoIOSInit init_the_streams; // gets initialized once 158} 159 160ios_base::Init::~Init() 161{ 162} 163 164_LIBCPP_END_NAMESPACE_STD 165