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/*
* $Id$
*/
#ifndef __POSIX_SYS_SIGNAL_INFORMATION_h
#define __POSIX_SYS_SIGNAL_INFORMATION_h
#ifdef __cplusplus
extern "C" {
#endif
#if defined(_POSIX_THREADS)
#include <sys/types.h>
#endif
/*
* 3.3 Signal Concepts, P1003.1b-1993, p. 60
*/
typedef __uint32_t sigset_t;
#define SIG_DFL ((void (*)())0) /* Request for default signal handling */
#define SIG_IGN ((void (*)())1) /* Request that signal be ignored */
#define SIG_ERR ((void (*)())-1) /* Returned by signal() on error */
/*
* Required Signals.
*
* The default action is in parentheses and is one of the
* following actions:
*
* (1) abnormal termination of process
* (2) ignore the signal
* (3) stop the process
* (4) continue the process if it is currently stopped, otherwise
* ignore the signal
*/
#define SIGHUP 1 /* (1) hangup detected on controlling terminal */
#define SIGINT 2 /* (1) interactive attention signal */
#define SIGQUIT 3 /* (1) interactive termination signal */
#define SIGILL 4 /* (1) illegal instruction */
#define SIGTRAP 5 /* (1) trace trap (not reset) */
#define SIGIOT 6 /* (1) IOT instruction */
#define SIGABRT 6 /* (1) abnormal terminal signal */
#define SIGEMT 7 /* (1) EMT instruction */
#define SIGFPE 8 /* (1) erroneous arithmetic operation */
#define SIGKILL 9 /* (1) termination signal */
#define SIGBUS 10 /* (1) bus error */
#define SIGSEGV 11 /* (1) invalid memory reference */
#define SIGSYS 12 /* (1) bad argument to system call */
#define SIGPIPE 13 /* (1) write on pipe with no readers */
#define SIGALRM 14 /* (1) timeout signal, such as initiated by alarm() */
#define SIGTERM 15 /* (1) termination signal */
#define SIGUSR1 16 /* (1) reserved as application defined signal 1 */
#define SIGUSR2 17 /* (1) reserved as application defined signal 2 */
#define __SIGFIRSTNOTRT SIGHUP
#define __SIGLASTNOTRT SIGUSR2
/*
* RTEMS does not support job control, hence no Job Control Signals are
* defined per P1003.1b-1993, p. 60-61.
*/
/*
* RTEMS does not support memory protection, hence no Memory Protection
* Signals are defined per P1003.1b-1993, p. 60-61.
*/
/*
* Real-Time Signals Range, P1003.1b-1993, p. 61
*
* NOTE: This should be at least RTSIG_MAX (which is a minimum of 8) signals.
*/
#define SIGRTMIN 18
#define SIGRTMAX 32
/* sigev_notify values
*
* NOTE: P1003.1c/D10, p. 34 adds SIGEV_THREAD.
*/
#define SIGEV_NONE 1 /* No asynchronous notification shall be delivered */
/* when the event of interest occurs. */
#define SIGEV_SIGNAL 2 /* A queued signal, with an application defined */
/* value, shall be delivered when the event of */
/* interest occurs. */
#define SIGEV_THREAD 3 /* A notification function shall be called to */
/* perform notification. */
/*
* 3.3.1.2 Signal Generation and Delivery, P1003.1b-1993, p. 63
*
* NOTE: P1003.1c/D10, p. 34 adds sigev_notify_function and
* sigev_notify_attributes to the sigevent structure.
*/
union sigval {
int sival_int; /* Integer signal value */
void *sival_ptr; /* Pointer signal value */
};
struct sigevent {
int sigev_notify; /* Notification type */
int sigev_signo; /* Signal number */
union sigval sigev_value; /* Signal value */
#if defined(_POSIX_THREADS)
void (*sigev_notify_function)( union sigval );
/* Notification function */
pthread_attr_t *sigev_notify_attributes; /* Notification Attributes */
#endif
};
/*
* 3.3.1.3 Signal Actions, P1003.1b-1993, p. 64
*/
/* si_code values, p. 66 */
#define SI_USER 1 /* Sent by a user. kill(), abort(), etc */
#define SI_QUEUE 2 /* Sent by sigqueue() */
#define SI_TIMER 3 /* Sent by expiration of a timer_settime() timer */
#define SI_ASYNCIO 4 /* Indicates completion of asycnhronous IO */
#define SI_MESGQ 5 /* Indicates arrival of a message at an empty queue */
typedef struct {
int si_signo; /* Signal number */
int si_code; /* Cause of the signal */
union sigval si_value; /* Signal value */
} siginfo_t;
/*
* 3.3.4 Examine and Change Signal Action, P1003.1b-1993, p. 70
*/
/* sa_flags values */
#define SA_NOCLDSTOP 1 /* Do not generate SIGCHLD when children stop */
#define SA_SIGINFO 2 /* Invoke the signal catching function with */
/* three arguments instead of one. */
/*
* Data Structure Notes:
*
* (1) Routines stored in sa_handler should take a single int as
* there argument although the POSIX standard does not require this.
* (2) The fields sa_handler and sa_sigaction may overlap, and a conforming
* application should not use both simultaneously.
*
* NOTE: In this implementation, macros are provided to access into the
* union.
*/
struct sigaction {
int sa_flags; /* Special flags to affect behavior of signal */
sigset_t sa_mask; /* Additional set of signals to be blocked */
/* during execution of signal-catching */
/* function. */
union {
void (*_handler)(); /* SIG_DFL, SIG_IGN, or pointer to a function */
void (*_sigaction)( int, siginfo_t *, void * );
} _signal_handlers;
};
#define sa_handler _signal_handlers._handler
#define sa_sigaction _signal_handlers._sigaction
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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