qt高精度定时器的使用停止线程应用

##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; }

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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