qt-thread

qt4-thread

// hellothread/hellothread.h
class HelloThread : public QThread
{
    Q_OBJECT
private:
    void run();
};

// hellothread/hellothread.cpp
void HelloThread::run()
{
     qDebug() << "hello from worker thread " << thread()->currentThreadId();
}

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);
    HelloThread thread;
    thread.start();
    qDebug() << "hello from GUI thread " << app.thread()->currentThreadId();
    thread.wait();  // do not exit before the thread is completed!
    return 0;
}

等待唤醒

QWaitCondition m_wait;
QMutex m_mutex;

m_mutex.lock();
...
m_wait.wait(&m_mutex);
m_mutex.unlock();

m_wait.wakeOne();

同步

QMutex mutex;
 
void someMethod()
{
    QMutexLocker locker(&mutex);
    qDebug()<<"Hello";
    qDebug()<<"World";
}

更新UI