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