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#ifndef __SIGNAL_H
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#define __SIGNAL_H
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#pragma lib "/$M/lib/ape/libap.a"
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typedef int sig_atomic_t;
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/*
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* We don't give arg types for signal handlers, in spite of ANSI requirement
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* that it be 'int' (the signal number), because some programs need an
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* additional context argument. So the real type of signal handlers is
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* void handler(int sig, char *, struct Ureg *)
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* where the char * is the Plan 9 message and Ureg is defined in <ureg.h>
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*/
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#define SIG_DFL ((void (*)())0)
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#define SIG_ERR ((void (*)())-1)
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#define SIG_IGN ((void (*)())1)
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#define SIGHUP 1 /* hangup */
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#define SIGINT 2 /* interrupt */
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#define SIGQUIT 3 /* quit */
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#define SIGILL 4 /* illegal instruction (not reset when caught)*/
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#define SIGABRT 5 /* used by abort */
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#define SIGFPE 6 /* floating point exception */
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#define SIGKILL 7 /* kill (cannot be caught or ignored) */
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#define SIGSEGV 8 /* segmentation violation */
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#define SIGPIPE 9 /* write on a pipe with no one to read it */
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#define SIGALRM 10 /* alarm clock */
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#define SIGTERM 11 /* software termination signal from kill */
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#define SIGUSR1 12 /* user defined signal 1 */
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#define SIGUSR2 13 /* user defined signal 2 */
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#define SIGBUS 14 /* bus error */
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/* The following symbols must be defined, but the signals needn't be supported */
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#define SIGCHLD 15 /* child process terminated or stopped */
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#define SIGCONT 16 /* continue if stopped */
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#define SIGSTOP 17 /* stop */
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#define SIGTSTP 18 /* interactive stop */
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#define SIGTTIN 19 /* read from ctl tty by member of background */
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#define SIGTTOU 20 /* write to ctl tty by member of background */
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#ifdef _BSD_EXTENSION
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#define NSIG 21
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern void (*signal(int, void (*)()))();
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extern int raise(int);
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#ifdef __cplusplus
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}
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#endif
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#ifdef _POSIX_SOURCE
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typedef long sigset_t;
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struct sigaction {
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void (*sa_handler)();
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sigset_t sa_mask;
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int sa_flags;
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};
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/* values for sa_flags */
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#define SA_NOCLDSTOP 1
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/* first argument to sigprocmask */
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#define SIG_BLOCK 1
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#define SIG_UNBLOCK 2
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#define SIG_SETMASK 3
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef __TYPES_H
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extern int kill(pid_t, int);
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#endif
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extern int sigemptyset(sigset_t *);
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extern int sigfillset(sigset_t *);
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extern int sigaddset(sigset_t *, int);
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extern int sigdelset(sigset_t *, int);
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extern int sigismember(const sigset_t *, int);
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extern int sigaction(int, const struct sigaction *, struct sigaction *);
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extern int sigprocmask(int, sigset_t *, sigset_t *);
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extern int sigpending(sigset_t *);
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extern int sigsuspend(const sigset_t *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _POSIX_SOURCE */
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#endif /* __SIGNAL_H */
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