##线程停止

//线程停止应用
public: explicit WorkerThread(QObject *parent = 0) :

QThread(parent), m_bStopped(false)

{

    qDebug() << "Worker Thread : " << QThread::currentThreadId();

}

~WorkerThread()

{

    stop();

    quit();

    wait();

}

void stop() {

    qDebug() << "Worker Stop Thread : " << QThread::currentThreadId();

    QMutexLocker locker(&m_mutex);

    m_bStopped = true; 

}

高精度定时器

在 Qt 中，实现高精度计时。该类提供了纳秒级别的计时精度，可以使用其clock_nanosleep()函数来获取从启动计时器开始到当前时间的纳秒数。

以下是一个简单的示例：

#define FREQUENCY 1000
#define     CLOCK_TO_USE         CLOCK_REALTIME
#define     NSEC_PER_SEC         (1000000000L)
#define PERIOD_NS (NSEC_PER_SEC / FREQUENCY ) /*本次设置周期PERIOD_NS为1ms*/
const struct timespec cycletime = {0, PERIOD_NS};
void *thread(void * arg)
{
  
    struct timespec wakeupTime, time;
    clock_gettime(CLOCK_TO_USE, &wakeupTime);
    while (1)
    {
          wakeupTime = timespec_add(wakeupTime, cycletime);
          clock_nanosleep(CLOCK_TO_USE, TIMER_ABSTIME, &wakeupTime, NULL);

    }

}

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