test2.c

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#ifndef AUTO_SCRIPTE
#define AUTO_SCRIPTE

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/poll.h>
#include <errno.h>
#include <signal.h>

#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>

#define DEV_PATH		"/dev/test"
#define POLLFD_NUM		8

int test_fd = -1;
unsigned long count = 0;

void signal_handler( int sig )
{
	switch( sig )
	{
		case SIGINT:
			ioctl( test_fd, 0x7F, &count );
			count = ( ++count % 4 );

			if( count == 3 )
				exit( 0 );
			break;
		default:
			break;
	}
}

inline void do_run( int fd )
{
	struct pollfd pollfdset[ POLLFD_NUM ]; 
	int result;

	fd_set rfds;

	while( 1 )
	{
		FD_ZERO( &rfds );
		FD_SET( fd, &rfds );

		result = select( fd + 1, &rfds, NULL, NULL, NULL );
		if( 0 > result )
		{
			printf( "select error: %s\n", strerror( errno ) );
		}
		else if( 0 == result )
		{
			printf( "selecttimeout\n" );
		}
		else
		{
			if( FD_ISSET( fd, &rfds ) )
			{
				printf( "select fd\n" );
			}
		}
		
#if 0
		memset( &pollfdset, 0, sizeof( pollfdset ) );

		pollfdset[ 0 ].fd = fd;
		pollfdset[ 0 ].events = POLLIN | 0x02 | 0x04 | 0x08;
		pollfdset[ 0 ].revents = 0;

		result = poll( pollfdset, fd + 1, 1000 * 1000 );
		printf( "after poll\n" );
		if( 0 > result )
		{
			printf( "poll error: %s\n", strerror( errno ) );
		}
		else if( 0 == result )
		{
			printf( "poll timeout\n" );
		}
		else 
		{
			if( 0x01 & pollfdset[ 0 ].revents )
				printf( "0x01 poll\n" );
			if( 0x02 & pollfdset[ 0 ].revents )
				printf( "0x02 poll\n" );
			if( 0x04 & pollfdset[ 0 ].revents )
				printf( "0x04 poll\n" );
			if( 0x08 & pollfdset[ 0 ].revents )
				printf( "0x08 poll\n" );
		}
#endif

	}

}

int main( int argc, char *argv[] )
{
	//signal( SIGINT, signal_handler );

	test_fd = open( DEV_PATH, O_RDWR );
	if( 0 > test_fd )
	{
		fprintf( stderr, "Open %s failed: %s\n", DEV_PATH, strerror( errno ) );
		return -1;
	}

	//do_run( test_fd );
	count = 2;
	ioctl( test_fd, 0x7F, &count );

	close( test_fd );

	return 0;
}

#endif /*#ifdef AUTO_SCRIPTE*/