signal.h

os arm os arm os arm os arm os arm os arm os arm os arm os arm os arm os arm os arm os arm os arm

/*
 *	ApOS (Another Project software for s3c2410)
 *	
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License version 2 as
 *	published by the Free Software Foundation.
 *			
 *						Copyright caiyuqing
 *
 */
#ifndef _SIGNAL_H
#define _SIGNAL_H

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

typedef void (*__sighandler_t)(void);

#define SA_NOCLDSTOP	1
#define SA_NOMASK   	0x40000000	//不阻止在指定的信号处理函数中再收到该信号
#define SA_ONESHOT	0x80000000	//当指定的信号句柄被调用后则马上恢复成默认句柄

#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	((__sighandler_t)0)	/* default signal handling */
#define SIG_IGN	((__sighandler_t)1)	/* ignore signal */
#define SIG_ERR	((__sighandler_t)-1)	/* error return from signal */

struct sigaction
{
	__sighandler_t sa_handler;
	sigset_t sa_mask;
	int sa_flags;
	void (*sa_restorer)(void);
};

#endif