112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
|
/*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* $Revision$
|
||
|
|
* $Author$
|
||
|
|
* $Date$
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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_DEFINED
|
||
|
|
typedef 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);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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 __cplusplus
|
||
|
|
extern "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, __p_sig_fn_t);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Raise the signal indicated by sig. Returns non-zero on success.
|
||
|
|
*/
|
||
|
|
int raise (int);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* Not RC_INVOKED */
|
||
|
|
|
||
|
|
#endif /* Not _SIGNAL_H_ */
|
||
|
|
|