QT 워커 스래드 예제

ss Worker : public QObject
{
    Q_OBJECT
 
public slots:
    void doWork(const QString &parameter) {
        QString result;
        /* ... here is the expensive or blocking operation ... */
        emit resultReady(result);
    }
 
signals:
    void resultReady(const QString &result);
};
 
class Controller : public QObject
{
    Q_OBJECT
    QThread workerThread;
public:
    Controller() {
        Worker *worker = new Worker;
        worker->moveToThread(&workerThread);
        connect(&workerThread, &QThread::finished, worker, &QObject::deleteLater);
        connect(this, &Controller::operate, worker, &Worker::doWork);
        connect(worker, &Worker::resultReady, this, &Controller::handleResults);
        workerThread.start();
    }
    ~Controller() {
        workerThread.quit();
        workerThread.wait();
    }
public slots:
    void handleResults(const QString &);
signals:
    void operate(const QString &);
};

슬롯 & 시그널

https://doc.qt.io/archives/qt-4.8/signalsandslots.html

워커 스래드 사용법

https://doc.qt.io/qt-5/qthread.html#details

https://wiki.qt.io/QThreads_general_usage

qt 스레드 문서 한글

https://wiki.qt.io/QThreads_general_usage

https://doc.qt.io/archives/qt-4.8/threads-qobject.html#signals-and-slots-across-threads

Qwaitcondition 예제

https://doc.qt.io/qt-5/qtcore-threads-waitconditions-example.html