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- /* sys/signal.h */
-
- #ifndef _SYS_SIGNAL_H
- #define _SYS_SIGNAL_H
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- #include "_ansi.h"
- #include <sys/features.h>
-
- /* #ifndef __STRICT_ANSI__*/
-
- #if defined(_POSIX_THREADS)
- #include <sys/types.h> /* for pthread data types */
- #endif
-
- typedef unsigned long sigset_t;
-
- #if defined(__rtems__)
-
- #if defined(_POSIX_REALTIME_SIGNALS)
-
- /* 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. */
-
- /* 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
- };
-
- /* 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;
- #endif
-
- /* 3.3.8 Synchronously Accept a Signal, P1003.1b-1993, p. 76 */
-
- #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. */
-
- /* struct sigaction notes from POSIX:
- *
- * (1) Routines stored in sa_handler should take a single int as
- * their 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.
- */
-
- typedef void (*_sig_func_ptr)();
-
- 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 {
- _sig_func_ptr _handler; /* SIG_DFL, SIG_IGN, or pointer to a function */
- #if defined(_POSIX_REALTIME_SIGNALS)
- void (*_sigaction)( int, siginfo_t *, void * );
- #endif
- } _signal_handlers;
- };
-
- #define sa_handler _signal_handlers._handler
- #if defined(_POSIX_REALTIME_SIGNALS)
- #define sa_sigaction _signal_handlers._sigaction
- #endif
-
- #elif defined(__CYGWIN__)
- #include <cygwin/signal.h>
- #else
- #define SA_NOCLDSTOP 1 /* only value supported now for sa_flags */
-
- typedef void (*_sig_func_ptr)(int);
-
- struct sigaction
- {
- _sig_func_ptr sa_handler;
- sigset_t sa_mask;
- int sa_flags;
- };
- #endif /* defined(__rtems__) */
-
- #define SIG_SETMASK 0 /* set mask with sigprocmask() */
- #define SIG_BLOCK 1 /* set of signals to block */
- #define SIG_UNBLOCK 2 /* set of signals to, well, unblock */
-
- /* These depend upon the type of sigset_t, which right now
- is always a long.. They're in the POSIX namespace, but
- are not ANSI. */
- #define sigaddset(what,sig) (*(what) |= (1<<(sig)))
- #define sigemptyset(what) (*(what) = 0)
-
- int _EXFUN(sigprocmask, (int how, const sigset_t *set, sigset_t *oset));
-
- #if defined(_POSIX_THREADS)
- int _EXFUN(pthread_sigmask, (int how, const sigset_t *set, sigset_t *oset));
- #endif
-
- /* protos for functions found in winsup sources for CYGWIN */
- #if defined(__CYGWIN__) || defined(__rtems__)
- #undef sigaddset
- #undef sigemptyset
- /* The first argument to kill should be pid_t. Right now
- <sys/types.h> always defines pid_t to be int. If that ever
- changes, then we will need to do something else, perhaps along the
- lines of <machine/types.h>. */
- int _EXFUN(kill, (int, int));
- int _EXFUN(killpg, (pid_t, int));
- int _EXFUN(sigaction, (int, const struct sigaction *, struct sigaction *));
- int _EXFUN(sigaddset, (sigset_t *, const int));
- int _EXFUN(sigdelset, (sigset_t *, const int));
- int _EXFUN(sigismember, (const sigset_t *, int));
- int _EXFUN(sigfillset, (sigset_t *));
- int _EXFUN(sigemptyset, (sigset_t *));
- int _EXFUN(sigpending, (sigset_t *));
- int _EXFUN(sigsuspend, (const sigset_t *));
- int _EXFUN(sigpause, (int));
-
- #if defined(_POSIX_THREADS)
- #ifdef __CYGWIN__
- # ifndef _CYGWIN_TYPES_H
- # error You need the winsup sources or a cygwin installation to compile the cygwin version of newlib.
- # endif
- #endif
- int _EXFUN(pthread_kill, (pthread_t thread, int sig));
- #endif
-
- #if defined(_POSIX_REALTIME_SIGNALS)
-
- /* 3.3.8 Synchronously Accept a Signal, P1003.1b-1993, p. 76
- NOTE: P1003.1c/D10, p. 39 adds sigwait(). */
-
- int _EXFUN(sigwaitinfo, (const sigset_t *set, siginfo_t *info));
- int _EXFUN(sigtimedwait,
- (const sigset_t *set, siginfo_t *info, const struct timespec *timeout)
- );
- int _EXFUN(sigwait, (const sigset_t *set, int *sig));
-
- /* 3.3.9 Queue a Signal to a Process, P1003.1b-1993, p. 78 */
- int _EXFUN(sigqueue, (pid_t pid, int signo, const union sigval value));
-
- #endif /* defined(_POSIX_REALTIME_SIGNALS) */
-
- #endif /* defined(__CYGWIN__) || defined(__rtems__) */
-
- /* #endif __STRICT_ANSI__ */
-
- #if defined(___AM29K__)
- /* These all need to be defined for ANSI C, but I don't think they are
- meaningful. */
- #define SIGABRT 1
- #define SIGFPE 1
- #define SIGILL 1
- #define SIGINT 1
- #define SIGSEGV 1
- #define SIGTERM 1
- /* These need to be defined for POSIX, and some others do too. */
- #define SIGHUP 1
- #define SIGQUIT 1
- #define NSIG 2
- #elif defined(__GO32__)
- #define SIGINT 1
- #define SIGKILL 2
- #define SIGPIPE 3
- #define SIGFPE 4
- #define SIGHUP 5
- #define SIGTERM 6
- #define SIGSEGV 7
- #define SIGTSTP 8
- #define SIGQUIT 9
- #define SIGTRAP 10
- #define SIGILL 11
- #define SIGEMT 12
- #define SIGALRM 13
- #define SIGBUS 14
- #define SIGLOST 15
- #define SIGSTOP 16
- #define SIGABRT 17
- #define SIGUSR1 18
- #define SIGUSR2 19
- #define NSIG 20
- #elif !defined(SIGTRAP)
- #define SIGHUP 1 /* hangup */
- #define SIGINT 2 /* interrupt */
- #define SIGQUIT 3 /* quit */
- #define SIGILL 4 /* illegal instruction (not reset when caught) */
- #define SIGTRAP 5 /* trace trap (not reset when caught) */
- #define SIGIOT 6 /* IOT instruction */
- #define SIGABRT 6 /* used by abort, replace SIGIOT in the future */
- #define SIGEMT 7 /* EMT instruction */
- #define SIGFPE 8 /* floating point exception */
- #define SIGKILL 9 /* kill (cannot be caught or ignored) */
- #define SIGBUS 10 /* bus error */
- #define SIGSEGV 11 /* segmentation violation */
- #define SIGSYS 12 /* bad argument to system call */
- #define SIGPIPE 13 /* write on a pipe with no one to read it */
- #define SIGALRM 14 /* alarm clock */
- #define SIGTERM 15 /* software termination signal from kill */
-
- #if defined(__rtems__)
- #define SIGURG 16 /* urgent condition on IO channel */
- #define SIGSTOP 17 /* sendable stop signal not from tty */
- #define SIGTSTP 18 /* stop signal from tty */
- #define SIGCONT 19 /* continue a stopped process */
- #define SIGCHLD 20 /* to parent on child stop or exit */
- #define SIGCLD 20 /* System V name for SIGCHLD */
- #define SIGTTIN 21 /* to readers pgrp upon background tty read */
- #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
- #define SIGIO 23 /* input/output possible signal */
- #define SIGPOLL SIGIO /* System V name for SIGIO */
- #define SIGWINCH 24 /* window changed */
- #define SIGUSR1 25 /* user defined signal 1 */
- #define SIGUSR2 26 /* user defined signal 2 */
-
- /* Real-Time Signals Range, P1003.1b-1993, p. 61
- NOTE: By P1003.1b-1993, this should be at least RTSIG_MAX
- (which is a minimum of 8) signals.
- */
- #define SIGRTMIN 27
- #define SIGRTMAX 31
- #define __SIGFIRSTNOTRT SIGHUP
- #define __SIGLASTNOTRT SIGUSR2
-
- #define NSIG 32 /* signal 0 implied */
-
- #elif defined(__svr4__)
- /* svr4 specifics. different signals above 15, and sigaction. */
- #define SIGUSR1 16
- #define SIGUSR2 17
- #define SIGCLD 18
- #define SIGPWR 19
- #define SIGWINCH 20
- #define SIGPOLL 22 /* 20 for x.out binaries!!!! */
- #define SIGSTOP 23 /* sendable stop signal not from tty */
- #define SIGTSTP 24 /* stop signal from tty */
- #define SIGCONT 25 /* continue a stopped process */
- #define SIGTTIN 26 /* to readers pgrp upon background tty read */
- #define SIGTTOU 27 /* like TTIN for output if (tp->t_local<OSTOP) */
- #define NSIG 28
- #else
- #define SIGURG 16 /* urgent condition on IO channel */
- #define SIGSTOP 17 /* sendable stop signal not from tty */
- #define SIGTSTP 18 /* stop signal from tty */
- #define SIGCONT 19 /* continue a stopped process */
- #define SIGCHLD 20 /* to parent on child stop or exit */
- #define SIGCLD 20 /* System V name for SIGCHLD */
- #define SIGTTIN 21 /* to readers pgrp upon background tty read */
- #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
- #define SIGIO 23 /* input/output possible signal */
- #define SIGPOLL SIGIO /* System V name for SIGIO */
- #define SIGXCPU 24 /* exceeded CPU time limit */
- #define SIGXFSZ 25 /* exceeded file size limit */
- #define SIGVTALRM 26 /* virtual time alarm */
- #define SIGPROF 27 /* profiling time alarm */
- #define SIGWINCH 28 /* window changed */
- #define SIGLOST 29 /* resource lost (eg, record-lock lost) */
- #define SIGUSR1 30 /* user defined signal 1 */
- #define SIGUSR2 31 /* user defined signal 2 */
- #define NSIG 32 /* signal 0 implied */
- #endif
- #endif
-
- #ifdef __cplusplus
- }
- #endif
- #endif /* _SYS_SIGNAL_H */
-