initconin.cpp File Reference

#include <corecrt_internal_lowio.h>

Include dependency graph for initconin.cpp:

Go to the source code of this file.

Functions
	_CRT_LINKER_FORCE_INCLUDE (__dcrt_console_input_terminator)
static void	__dcrt_lowio_initialize_console_input ()
BOOL __cdecl	__dcrt_lowio_ensure_console_input_initialized ()
void __cdecl	__dcrt_terminate_console_input ()
template<typename Func >
static BOOL	console_input_reopen_and_retry (Func const &fp) throw ()
BOOL __cdecl	__dcrt_read_console_input (_Out_ PINPUT_RECORD lpBuffer, _In_ DWORD nLength, _Out_ LPDWORD lpNumberOfEventsRead)
BOOL __cdecl	__dcrt_read_console (_Out_ LPVOID lpBuffer, _In_ DWORD nNumberOfCharsToRead, _Out_ LPDWORD lpNumberOfCharsRead)
BOOL __cdecl	__dcrt_get_number_of_console_input_events (_Out_ LPDWORD lpcNumberOfEvents)
BOOL __cdecl	__dcrt_peek_console_input_a (_Out_ PINPUT_RECORD lpBuffer, _In_ DWORD nLength, _Out_ LPDWORD lpNumberOfEventsRead)
BOOL __cdecl	__dcrt_get_input_console_mode (_Out_ LPDWORD lpMode)
BOOL __cdecl	__dcrt_set_input_console_mode (_In_ DWORD dwMode)

Variables
static HANDLE	__dcrt_lowio_console_input_handle = _console_uninitialized_handle

Function Documentation

__dcrt_get_input_console_mode()

BOOL __cdecl __dcrt_get_input_console_mode

(

_Out_ LPDWORD

lpMode

)

Definition at line 136 of file initconin.cpp.

{
    return console_input_reopen_and_retry(
        [lpMode]()
        {
            return ::GetConsoleMode(
                __dcrt_lowio_console_input_handle,
                lpMode
                );
        });
}

Referenced by _cgetws_s(), _getch_nolock(), and _getwch_nolock().

__dcrt_get_number_of_console_input_events()

BOOL __cdecl __dcrt_get_number_of_console_input_events

(

_Out_ LPDWORD

lpcNumberOfEvents

)

Definition at line 104 of file initconin.cpp.

{
    return console_input_reopen_and_retry(
        [lpcNumberOfEvents]()
        {
            return ::GetNumberOfConsoleInputEvents(
                __dcrt_lowio_console_input_handle,
                lpcNumberOfEvents
                );
        });
}

Referenced by _kbhit_nolock().

__dcrt_lowio_ensure_console_input_initialized()

BOOL __cdecl __dcrt_lowio_ensure_console_input_initialized

(

void

)

Definition at line 31 of file initconin.cpp.

{
    if (__dcrt_lowio_console_input_handle == _console_uninitialized_handle)
    {
        __dcrt_lowio_initialize_console_input();
    }
 
    if (__dcrt_lowio_console_input_handle == _console_invalid_handle)
    {
        return FALSE;
    }
    return TRUE;
}

Referenced by _cgetws_s(), _getch_nolock(), _getwch_nolock(), and _kbhit_nolock().

__dcrt_lowio_initialize_console_input()

static void __dcrt_lowio_initialize_console_input ( )

static

Definition at line 19 of file initconin.cpp.

{
    __dcrt_lowio_console_input_handle = CreateFileW(
        L"CONIN$",
        GENERIC_READ | GENERIC_WRITE,
        FILE_SHARE_READ | FILE_SHARE_WRITE,
        nullptr,
        OPEN_EXISTING,
        0,
        nullptr);
}

Referenced by __dcrt_lowio_ensure_console_input_initialized(), and console_input_reopen_and_retry().

__dcrt_peek_console_input_a()

BOOL __cdecl __dcrt_peek_console_input_a	(	_Out_ PINPUT_RECORD	lpBuffer,
		_In_ DWORD	nLength,
		_Out_ LPDWORD	lpNumberOfEventsRead
	)

Definition at line 118 of file initconin.cpp.

{
    return console_input_reopen_and_retry(
        [lpBuffer, nLength, lpNumberOfEventsRead]()
        {
            return ::PeekConsoleInputA(
                __dcrt_lowio_console_input_handle,
                lpBuffer,
                nLength,
                lpNumberOfEventsRead
                );
        });
}

Referenced by _kbhit_nolock().

__dcrt_read_console()

BOOL __cdecl __dcrt_read_console	(	_Out_ LPVOID	lpBuffer,
		_In_ DWORD	nNumberOfCharsToRead,
		_Out_ LPDWORD	lpNumberOfCharsRead
	)

Definition at line 85 of file initconin.cpp.

{
    return console_input_reopen_and_retry(
        [lpBuffer, nNumberOfCharsToRead, lpNumberOfCharsRead]()
        {
            return ::ReadConsoleW(
                __dcrt_lowio_console_input_handle,
                lpBuffer,
                nNumberOfCharsToRead,
                lpNumberOfCharsRead,
                nullptr
                );
        });
}

Referenced by _cgetws_s().

__dcrt_read_console_input()

BOOL __cdecl __dcrt_read_console_input	(	_Out_ PINPUT_RECORD	lpBuffer,
		_In_ DWORD	nLength,
		_Out_ LPDWORD	lpNumberOfEventsRead
	)

Definition at line 67 of file initconin.cpp.

{
    return console_input_reopen_and_retry(
        [lpBuffer, nLength, lpNumberOfEventsRead]()
        {
            return ::ReadConsoleInputW(
                __dcrt_lowio_console_input_handle,
                lpBuffer,
                nLength,
                lpNumberOfEventsRead
                );
        });
}

Referenced by _getch_nolock(), and _getwch_nolock().

__dcrt_set_input_console_mode()

BOOL __cdecl __dcrt_set_input_console_mode

(

_In_ DWORD

dwMode

)

Definition at line 150 of file initconin.cpp.

{
    return console_input_reopen_and_retry(
        [dwMode]()
        {
            return ::SetConsoleMode(
                __dcrt_lowio_console_input_handle,
                dwMode
                );
        });
}

Referenced by _cgetws_s(), _getch_nolock(), and _getwch_nolock().

__dcrt_terminate_console_input()

void __cdecl __dcrt_terminate_console_input

(

)

Definition at line 46 of file initconin.cpp.

{
    if (   __dcrt_lowio_console_input_handle != _console_invalid_handle
        && __dcrt_lowio_console_input_handle != _console_uninitialized_handle)
    {
        CloseHandle(__dcrt_lowio_console_input_handle);
    }
}

Referenced by console_input_reopen_and_retry().

_CRT_LINKER_FORCE_INCLUDE()

_CRT_LINKER_FORCE_INCLUDE

(

__dcrt_console_input_terminator

)

console_input_reopen_and_retry()

template<typename Func >

static BOOL console_input_reopen_and_retry ( Func const &  fp ) throw ( )

static

Definition at line 56 of file initconin.cpp.

{
    BOOL result = fp();
    if (!result && GetLastError() == ERROR_INVALID_HANDLE) {
        __dcrt_terminate_console_input();
        __dcrt_lowio_initialize_console_input();
        result = fp();
    }
    return result;
}

Referenced by __dcrt_get_input_console_mode(), __dcrt_get_number_of_console_input_events(), __dcrt_peek_console_input_a(), __dcrt_read_console(), __dcrt_read_console_input(), and __dcrt_set_input_console_mode().

Variable Documentation

__dcrt_lowio_console_input_handle

HANDLE __dcrt_lowio_console_input_handle = _console_uninitialized_handle

static

Definition at line 16 of file initconin.cpp.

Referenced by __dcrt_get_input_console_mode(), __dcrt_get_number_of_console_input_events(), __dcrt_lowio_ensure_console_input_initialized(), __dcrt_lowio_initialize_console_input(), __dcrt_peek_console_input_a(), __dcrt_read_console(), __dcrt_read_console_input(), __dcrt_set_input_console_mode(), and __dcrt_terminate_console_input().