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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> |
| #include <sys/types.h> |
| |
| /* #ifndef __STRICT_ANSI__*/ |
| |
| 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. |
| * This is not longer true since at least POSIX.1-2008 |
| * (2) The fields sa_handler and sa_sigaction may overlap, and a conforming |
| * application should not use both simultaneously. |
| */ |
| |
| typedef void (*_sig_func_ptr)(int); |
| |
| 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)), 0) |
| #define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0) |
| #define sigemptyset(what) (*(what) = 0, 0) |
| #define sigfillset(what) (*(what) = ~(0), 0) |
| #define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 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 sigdelset |
| #undef sigemptyset |
| #undef sigfillset |
| #undef sigismember |
| |
| int _EXFUN(kill, (pid_t, 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 |
| |
| #ifndef _SIGNAL_H_ |
| /* Some applications take advantage of the fact that <sys/signal.h> |
| * and <signal.h> are equivalent in glibc. Allow for that here. */ |
| #include <signal.h> |
| #endif |
| #endif /* _SYS_SIGNAL_H */ |