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const struct sigevent *intHandler(void *arg, int id)
{
start_clock = ClockCycles();
//printf("start clock: %lld\n", start_clock);

return(&event);
}


int ConfigureISR()
{

// Get IO privilege
//
ThreadCtl( _NTO_TCTL_IO, 0 );


//
// Setup COID and event

chid = ChannelCreate( 0 );
SIGEV_INTR_INIT( &event);
interruptID = InterruptAttach(7, intHandler, NULL, 0, 0);
if (interruptID == -1)

{
        fprintf(stderr, "can't attach to IRQ\n");
        perror (NULL);
        exit (EXIT_FAILURE);
    }

InterruptWait(0, NULL);

    end_clock = ClockCycles();
   // printf("end clock: %lld\n", end_clock);

    //microseconds

InterruptLatency = (uint32) ((end_clock - start_clock)*1000000/(SYSPAGE_ENTRY(qtime)->cycles_per_sec));


printf("microseconds: %ld\n", InterruptLatency);
measurements[17] = InterruptLatency;


    return (EXIT_SUCCESS);
}

int main()
{
ConfigureISR();
// my socket code here to receive data from client.
}

我在 c 中为 QNX 操作系统创建了一个中断处理程序。我的任务：只要 udp 层上有数据，内核就应该调用这个中断处理程序。我正在计算上述代码中的中断延迟。客户端正在发送数据，服务器（上面的代码）正在从客户端接收数据并发送回响应。上面的代码每次都不会中断，只要它在 udp 层接收数据。以上可能是什么错误？有人可以帮我吗？

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