aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/cxxsupp/libcxxmsvc/src/iostream.cpp
blob: 79dbd9a52b7a7eb2dd2f5430d639af64fd8f3113 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include <__locale>
#include <__std_stream>
#include <new>
#include <string>

#define _str(s) #s
#define str(s) _str(s)
#define _LIBCPP_ABI_NAMESPACE_STR str(_LIBCPP_ABI_NAMESPACE)

_LIBCPP_BEGIN_NAMESPACE_STD

#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(__clang__)
_ALIGNAS_TYPE (istream) char _cin [sizeof(istream)];
_LIBCPP_FUNC_VIS istream& cin = *reinterpret_cast<istream*>(_cin);
#else
_ALIGNAS_TYPE (istream) _LIBCPP_FUNC_VIS char cin[sizeof(istream)]
#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
__asm__("?cin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
#endif
;
#endif
_ALIGNAS_TYPE (__stdinbuf<char> ) static char __cin[sizeof(__stdinbuf <char>)];
static mbstate_t mb_cin;

#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(__clang__)
_ALIGNAS_TYPE (wistream) char _wcin [sizeof(wistream)];
_LIBCPP_FUNC_VIS wistream& wcin = *reinterpret_cast<wistream*>(_wcin);
#else
_ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin[sizeof(wistream)]
#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
__asm__("?wcin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
#endif
;
#endif
_ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin[sizeof(__stdinbuf <wchar_t>)];
static mbstate_t mb_wcin;
#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS

#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(__clang__)
_ALIGNAS_TYPE (ostream)  char _cout[sizeof(ostream)];
_LIBCPP_FUNC_VIS ostream& cout = *reinterpret_cast<ostream*>(_cout);
#else
_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cout[sizeof(ostream)]
#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
__asm__("?cout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
#endif
;
#endif
_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)];
static mbstate_t mb_cout;

#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(__clang__)
_ALIGNAS_TYPE (wostream) char _wcout[sizeof(wostream)];
_LIBCPP_FUNC_VIS wostream& wcout = *reinterpret_cast<wostream*>(_wcout);
#else
_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)]
#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
__asm__("?wcout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
#endif
;
#endif
_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)];
static mbstate_t mb_wcout;
#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS

#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(__clang__)
_ALIGNAS_TYPE (ostream)  char _cerr[sizeof(ostream)];
_LIBCPP_FUNC_VIS ostream& cerr = *reinterpret_cast<ostream*>(_cerr);
#else
_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)]
#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
__asm__("?cerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
#endif
;
#endif
_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)];
static mbstate_t mb_cerr;

#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(__clang__)
_ALIGNAS_TYPE (wostream) char _wcerr[sizeof(wostream)];
_LIBCPP_FUNC_VIS wostream& wcerr = *reinterpret_cast<wostream*>(_wcerr);
#else
_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)]
#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
__asm__("?wcerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
#endif
;
#endif
_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)];
static mbstate_t mb_wcerr;
#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS

#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(__clang__)
_ALIGNAS_TYPE (ostream)  char _clog[sizeof(ostream)];
_LIBCPP_FUNC_VIS ostream& clog = *reinterpret_cast<ostream*>(_clog);
#else
_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char clog[sizeof(ostream)]
#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
__asm__("?clog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
#endif
;
#endif

#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(__clang__)
_ALIGNAS_TYPE (wostream) char _wclog[sizeof(wostream)];
_LIBCPP_FUNC_VIS wostream& wclog = *reinterpret_cast<wostream*>(_wclog);
#else
_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)]
#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
__asm__("?wclog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
#endif
;
#endif
#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS

// Pretend we're inside a system header so the compiler doesn't flag the use of the init_priority
// attribute with a value that's reserved for the implementation (we're the implementation).
#include "iostream_init.h"

// On Windows the TLS storage for locales needs to be initialized before we create
// the standard streams, otherwise it may not be alive during program termination
// when we flush the streams.
static void force_locale_initialization() {
#if defined(_LIBCPP_MSVCRT_LIKE)
  static bool once = []() {
    auto loc = newlocale(LC_ALL_MASK, "C", 0);
    {
        __libcpp_locale_guard g(loc); // forces initialization of locale TLS
        ((void)g);
    }
    freelocale(loc);
    return true;
  }();
  ((void)once);
#endif
}

class DoIOSInit {
public:
    DoIOSInit();
    ~DoIOSInit();
};

DoIOSInit::DoIOSInit()
{
    force_locale_initialization();

    istream* cin_ptr  = ::new(&cin)  istream(::new(__cin)  __stdinbuf <char>(stdin, &mb_cin));
    ostream* cout_ptr = ::new(&cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, &mb_cout));
    ostream* cerr_ptr = ::new(&cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, &mb_cerr));
                        ::new(&clog) ostream(cerr_ptr->rdbuf());
    cin_ptr->tie(cout_ptr);
    _VSTD::unitbuf(*cerr_ptr);
    cerr_ptr->tie(cout_ptr);

#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
    wistream* wcin_ptr  = ::new(&wcin)  wistream(::new(__wcin)  __stdinbuf <wchar_t>(stdin, &mb_wcin));
    wostream* wcout_ptr = ::new(&wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, &mb_wcout));
    wostream* wcerr_ptr = ::new(&wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, &mb_wcerr));
                          ::new(&wclog) wostream(wcerr_ptr->rdbuf());

    wcin_ptr->tie(wcout_ptr);
    _VSTD::unitbuf(*wcerr_ptr);
    wcerr_ptr->tie(wcout_ptr);
#endif
}

DoIOSInit::~DoIOSInit()
{
    ostream* cout_ptr = reinterpret_cast<ostream*>(&cout);
    cout_ptr->flush();
    ostream* clog_ptr = reinterpret_cast<ostream*>(&clog);
    clog_ptr->flush();

#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
    wostream* wcout_ptr = reinterpret_cast<wostream*>(&wcout);
    wcout_ptr->flush();
    wostream* wclog_ptr = reinterpret_cast<wostream*>(&wclog);
    wclog_ptr->flush();
#endif
}

ios_base::Init::Init()
{
    static DoIOSInit init_the_streams; // gets initialized once
}

ios_base::Init::~Init()
{
}

_LIBCPP_END_NAMESPACE_STD