/*  * signal.h * * A way to set handlers for exceptional conditions (also known as signals). * * This file is part of the Mingw32 package. * * Contributors: *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp> * *  THIS SOFTWARE IS NOT COPYRIGHTED * *  This source code is offered for use in the public domain. You may *  use, modify or distribute it freely. * *  This code is distributed in the hope that it will be useful but *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY *  DISCLAMED. This includes but is not limited to warranties of *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * $Revision: 1.3 $ * $Author: khan $ * $Date: 1998/12/31 22:18:08 $ * */#ifndef	_SIGNAL_H_#define	_SIGNAL_H_/* All the headers include this file. */#include <_mingw.h>/* * The actual signal values. Using other values with signal * produces a SIG_ERR return value. * * NOTE: SIGINT is produced when the user presses Ctrl-C. *       SIGILL has not been tested. *       SIGFPE doesn't seem to work? *       SIGSEGV does not catch writing to a NULL pointer (that shuts down *               your app; can you say "segmentation violation core dump"?). *       SIGTERM comes from what kind of termination request exactly? *       SIGBREAK is indeed produced by pressing Ctrl-Break. *       SIGABRT is produced by calling abort. * TODO: The above results may be related to not installing an appropriate *       structured exception handling frame. Results may be better if I ever *       manage to get the SEH stuff down. */#define	SIGINT		2	/* Interactive attention */#define	SIGILL		4	/* Illegal instruction */#define	SIGFPE		8	/* Floating point error */#define	SIGSEGV		11	/* Segmentation violation */#define	SIGTERM		15	/* Termination request */#define SIGBREAK	21	/* Control-break */#define	SIGABRT		22	/* Abnormal termination (abort) */#define NSIG 23     /* maximum signal number + 1 */#ifndef	RC_INVOKED#ifndef _SIG_ATOMIC_T_DEFINEDtypedef int sig_atomic_t;#define _SIG_ATOMIC_T_DEFINED#endif/* * The prototypes (below) are the easy part. The hard part is figuring * out what signals are available and what numbers they are assigned * along with appropriate values of SIG_DFL and SIG_IGN. *//* * A pointer to a signal handler function. A signal handler takes a * single int, which is the signal it handles. */typedef	void (*_p_sig_fn_t)(int nSig);/* * These are special values of signal handler pointers which are * used to send a signal to the default handler (SIG_DFL), ignore * the signal (SIG_IGN), or indicate an error return (SIG_ERR). */#define	SIG_DFL	((_p_sig_fn_t) 0)#define	SIG_IGN	((_p_sig_fn_t) 1)#define	SIG_ERR ((_p_sig_fn_t) -1)#ifdef	__cplusplusextern "C" {#endif/* * Call signal to set the signal handler for signal sig to the * function pointed to by handler. Returns a pointer to the * previous handler, or SIG_ERR if an error occurs. Initially * unhandled signals defined above will return SIG_DFL. */_p_sig_fn_t	signal(int sig, _p_sig_fn_t handler);/* * Raise the signal indicated by sig. Returns non-zero on success. */int	raise (int sig);#ifdef	__cplusplus}#endif#endif	/* Not RC_INVOKED */#endif	/* Not _SIGNAL_H_ */