linux c的程序

发布网友发布时间：2022-11-15 17:22

共2个回答

热心网友时间：2024-12-02 17:41

#include <stdio.h>
#include <time.h>

timer_t g_stTimer ;

#define TIMER (10 ) //10 sec
timer_t start_timer(int tv_sec, int tv_usec, int Again)
{
timer_t tId = 0;
struct sigevent tSigEvent = {0};
struct itimerspec tItimerSpec = {0};

tSigEvent.sigev_value.sival_ptr = pTimerSignalInfo;
tSigEvent.sigev_notify = SIGEV_SIGNAL;
tSigEvent.sigev_signo = SIGUSR1;

if(timer_create(CLOCK_REALTIME, &tSigEvent, &tId) < 0)
{
printf("start_timer timer_create failed, errno = %d.\r\n", errno);
return 0;
}

if(nTvSec == 0 && nTvUsec == 0)
{
tItimerSpec.it_value.tv_sec = 1;
}
else
{
tItimerSpec.it_value.tv_sec = nTvSec;
}
tItimerSpec.it_value.tv_nsec = nTvUsec * 1000;

if(nAgain == 1)
{
tItimerSpec.it_interval.tv_sec = tItimerSpec.it_value.tv_sec;
tItimerSpec.it_interval.tv_nsec = tItimerSpec.it_value.tv_nsec;
}
else
{
tItimerSpec.it_interval.tv_sec = 0;
tItimerSpec.it_interval.tv_nsec = 0;
}

if(timer_settime(tId, 0, &tItimerSpec, NULL) < 0)
{
timer_delete(tId);
printf("start timer timer_settime failed, errno = %d.\r\n", errno);
return 0;
}

return tId;
}

void read_control()
{
//read control process

}

int main()
{
struct sigaction stTimer;
memset(&stTimer, 0, sizeof(stTimer));

stTimer.sa_flags = 0;
sigemptyset(&stTimer.sa_mask);

stTimer.sa_handler = read_control();

sigaction(SIGUSR1, &stTimer, NULL);

g_stTimer = start_timer( TIMER, 0, 1);

while(1)
{
printf("waiting .....");
}

return 0;
}

热心网友时间：2024-12-02 17:41

楼主去看看unix环境高级编程里面的实例很多。