signal.h

Dos6.0

/***
*signal.h - defines signal values and routines
*
*	Copyright (c) 1985-1990, Microsoft Corporation.  All rights reserved.
*
*Purpose:
*	This file defines the signal values and declares the signal functions.
*	[ANSI/System V]
*
****/

#if defined(_DLL) && !defined(_MT)
#error Cannot define _DLL without _MT
#endif

#ifdef _MT
#define _FAR_ _far
#else
#define _FAR_
#endif

#ifdef	_DLL
#define _LOADDS_ _loadds
#else
#define _LOADDS_
#endif

#ifndef _SIG_ATOMIC_T_DEFINED
typedef int sig_atomic_t;
#define _SIG_ATOMIC_T_DEFINED
#endif


#define NSIG 23     /* maximum signal number + 1 */

/* signal types */
/* SIGINT, SIGFPE, SIGILL, SIGSEGV, and SIGABRT are recognized on DOS 3.x */

#define SIGINT		2	/* interrupt - corresponds to DOS 3.x int 23H */
#define SIGILL		4	/* illegal instruction - invalid function image */
#define SIGFPE		8	/* floating point exception */
#define SIGSEGV 	11	/* segment violation */
#define SIGTERM 	15	/* Software termination signal from kill */
#define SIGUSR1 	16	/* User defined signal 1 */
#define SIGUSR2 	17	/* User defined signal 2 */
#define SIGUSR3 	20	/* User defined signal 3 */
#define SIGBREAK	21	/* Ctrl-Break sequence */
#define SIGABRT 	22	/* abnormal termination triggered by abort call */


/* signal action codes */
/* SIG_DFL and SIG_IGN are recognized on DOS 3.x */

#define SIG_DFL (void (_FAR_ _cdecl _LOADDS_ *)())0	 /* default signal action */
#define SIG_IGN (void (_FAR_ _cdecl _LOADDS_ *)())1	 /* ignore */
#define SIG_SGE (void (_FAR_ _cdecl _LOADDS_ *)())3	 /* signal gets error */
#define SIG_ACK (void (_FAR_ _cdecl _LOADDS_ *)())4	 /* error if handler not setup */


/* signal error value (returned by signal call on error) */

#define SIG_ERR (void (_FAR_ _cdecl _LOADDS_ *)())-1	 /* signal error value */


/* function prototypes */

void (_FAR_ _cdecl _LOADDS_ * _FAR_ _cdecl signal(int,
	void (_FAR_ _cdecl _LOADDS_ *)()))();
#ifndef _MT
int _FAR_ _cdecl raise(int);
#endif