114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
/***
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*_initcon.c - direct console I/O initialization and termination for Win32
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*
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* Copyright (c) 1991, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Defines _initcon() and _termcon() routines.
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*
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* NOTE: The _initcon() and _termcon() routines are called indirectly
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* by the startup and termination code, thru the pointers _pinitcon
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* and _ptermcon.
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*
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*Revision History:
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* 07-26-91 GJF Module created. Based on the original code by Stevewo
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* (which was distributed across several sources).
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* 03-12-92 SKS Split out initializer
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <oscalls.h>
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void __cdecl _initcon(void);
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void __cdecl _termcon(void);
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#ifdef _MSC_VER
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#pragma data_seg(".CRT$XIC")
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static void (__cdecl *pinit)(void) = _initcon;
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#pragma data_seg(".CRT$XPX")
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static void (__cdecl *pterm)(void) = _termcon;
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#pragma data_seg()
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#endif /* _MSC_VER */
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/*
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* define console handles. these definitions cause this file to be linked
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* in if one of the direct console I/O functions is referenced.
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*/
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int _coninpfh = -1; /* console input */
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int _confh = -1; /* console output */
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/***
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*void _initcon(void) - open handles for console I/O
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*
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*Purpose:
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* Opens handles for console input and output.
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*
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*Entry:
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* None.
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*
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*Exit:
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* No return value. If successful, handle values are copied into the
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* global variables _coninpfh and _confh.
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*
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*Exceptions:
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*
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*******************************************************************************/
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void __cdecl _initcon (
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void
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)
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{
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_coninpfh = (int)CreateFile( "CONIN$",
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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NULL,
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OPEN_EXISTING,
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0,
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NULL
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);
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_confh = (int)CreateFile( "CONOUT$",
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GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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NULL,
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OPEN_EXISTING,
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0,
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NULL
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);
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}
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/***
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*void _termcon(void) - close console I/O handles
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*
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*Purpose:
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* Closes _coninpfh and _confh.
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*
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*Entry:
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* None.
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*
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*Exit:
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* No return value.
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*
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*Exceptions:
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*
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*******************************************************************************/
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void __cdecl _termcon (
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void
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)
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{
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if ( _confh != -1 ) {
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CloseHandle( (HANDLE)_confh );
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}
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if ( _coninpfh != -1 ) {
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CloseHandle( (HANDLE)_coninpfh );
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}
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}
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