/* $Id: fast_sigblock3.c,v 1.2 2013/01/09 07:31:50 kostik Exp $ */

#include <sys/types.h>
#include <sys/signalvar.h>
#include <sys/syscall.h>
#include <err.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <machine/atomic.h>

#ifndef FAST_SIGBLOCK_PEND
#define	FAST_SIGBLOCK_SETPTR	1
#define	FAST_SIGBLOCK_UNBLOCK	2
#define	FAST_SIGBLOCK_UNSETPTR	3

#define	FAST_SIGBLOCK_PEND	0x1
#define	FAST_SIGBLOCK_INC	0x10

#define	SYS_fast_sigblock	533
#endif

static uint32_t fsigblock;

static void
fast_sigblock_loc(int cmd, uint32_t *ptr)
{
	int error;

	error = syscall(SYS_fast_sigblock, cmd, ptr);
	if (error == -1)
		err(1, "SYS_fast_sigblock");
}

int
main(void)
{
	fast_sigblock_loc(FAST_SIGBLOCK_SETPTR, &fsigblock);
	atomic_add_int(&fsigblock, FAST_SIGBLOCK_INC);
	raise(SIGINT);
	raise(SIGKILL);
	pause();
	return (0);
}