ref: 759651e8a941378d89589d1084913c69bd5aeac4
dir: /sys/include/ape/signal.h/
#ifndef __SIGNAL_H
#define __SIGNAL_H
#pragma lib "/$M/lib/ape/libap.a"
typedef int sig_atomic_t;
/*
* We don't give arg types for signal handlers, in spite of ANSI requirement
* that it be 'int' (the signal number), because some programs need an
* additional context argument. So the real type of signal handlers is
* void handler(int sig, char *, struct Ureg *)
* where the char * is the Plan 9 message and Ureg is defined in <ureg.h>
*/
#define SIG_DFL ((void (*)())0)
#define SIG_ERR ((void (*)())-1)
#define SIG_IGN ((void (*)())1)
#define SIGHUP 1 /* hangup */
#define SIGINT 2 /* interrupt */
#define SIGQUIT 3 /* quit */
#define SIGILL 4 /* illegal instruction (not reset when caught)*/
#define SIGABRT 5 /* used by abort */
#define SIGFPE 6 /* floating point exception */
#define SIGKILL 7 /* kill (cannot be caught or ignored) */
#define SIGSEGV 8 /* segmentation violation */
#define SIGPIPE 9 /* write on a pipe with no one to read it */
#define SIGALRM 10 /* alarm clock */
#define SIGTERM 11 /* software termination signal from kill */
#define SIGUSR1 12 /* user defined signal 1 */
#define SIGUSR2 13 /* user defined signal 2 */
#define SIGBUS 14 /* bus error */
/* The following symbols must be defined, but the signals needn't be supported */
#define SIGCHLD 15 /* child process terminated or stopped */
#define SIGCONT 16 /* continue if stopped */
#define SIGSTOP 17 /* stop */
#define SIGTSTP 18 /* interactive stop */
#define SIGTTIN 19 /* read from ctl tty by member of background */
#define SIGTTOU 20 /* write to ctl tty by member of background */
#ifdef _BSD_EXTENSION
#define NSIG 21
#endif
#ifdef __cplusplus
extern "C" {
#endif
extern void (*signal(int, void (*)()))();
extern int raise(int);
#ifdef __cplusplus
}
#endif
#ifdef _POSIX_SOURCE
typedef long sigset_t;
struct sigaction {
void (*sa_handler)();
sigset_t sa_mask;
int sa_flags;
};
/* values for sa_flags */
#define SA_NOCLDSTOP 1
/* first argument to sigprocmask */
#define SIG_BLOCK 1
#define SIG_UNBLOCK 2
#define SIG_SETMASK 3
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __TYPES_H
extern int kill(pid_t, int);
#endif
extern int sigemptyset(sigset_t *);
extern int sigfillset(sigset_t *);
extern int sigaddset(sigset_t *, int);
extern int sigdelset(sigset_t *, int);
extern int sigismember(const sigset_t *, int);
extern int sigaction(int, const struct sigaction *, struct sigaction *);
extern int sigprocmask(int, sigset_t *, sigset_t *);
extern int sigpending(sigset_t *);
extern int sigsuspend(const sigset_t *);
#ifdef __cplusplus
}
#endif
#endif /* _POSIX_SOURCE */
#endif /* __SIGNAL_H */