#ifndef _SIGNAL_H#define _SIGNAL_H#include <sys/types.h>typedef int sig_atomic_t;typedef unsigned int sigset_t;		/* 32 bits */#define _NSIG             32#define NSIG		_NSIG#define SIGHUP		 1#define SIGINT		 2#define SIGQUIT		 3#define SIGILL		 4#define SIGTRAP		 5#define SIGABRT		 6#define SIGIOT		 6#define SIGUNUSED	 7#define SIGFPE		 8#define SIGKILL		 9#define SIGUSR1		10#define SIGSEGV		11#define SIGUSR2		12#define SIGPIPE		13#define SIGALRM		14#define SIGTERM		15#define SIGSTKFLT	16#define SIGCHLD		17#define SIGCONT		18#define SIGSTOP		19#define SIGTSTP		20#define SIGTTIN		21#define SIGTTOU		22/* Ok, I haven't implemented sigactions, but trying to keep headers POSIX */#define SA_NOCLDSTOP	1#define SA_NOMASK	0x40000000#define SA_ONESHOT	0x80000000#define SIG_BLOCK          0	/* for blocking signals */#define SIG_UNBLOCK        1	/* for unblocking signals */#define SIG_SETMASK        2	/* for setting the signal mask */#define SIG_DFL		((void (*)(int))0)	/* default signal handling */#define SIG_IGN		((void (*)(int))1)	/* ignore signal */struct sigaction {	void (*sa_handler)(int);	sigset_t sa_mask;	int sa_flags;	void (*sa_restorer)(void);};void (*signal(int _sig, void (*_func)(int)))(int);int raise(int sig);int kill(pid_t pid, int sig);int sigaddset(sigset_t *mask, int signo);int sigdelset(sigset_t *mask, int signo);int sigemptyset(sigset_t *mask);int sigfillset(sigset_t *mask);int sigismember(sigset_t *mask, int signo); /* 1 - is, 0 - not, -1 error */int sigpending(sigset_t *set);int sigprocmask(int how, sigset_t *set, sigset_t *oldset);int sigsuspend(sigset_t *sigmask);int sigaction(int sig, struct sigaction *act, struct sigaction *oldact);#endif /* _SIGNAL_H */