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- /*
- * 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_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 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 __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 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_ */
-
-