在main()即主線程中創建了一個QThread.

將一個worker類移動到新線程.該線程執行worker類的’StartThread’方法.

工人線程：

//header file

class Worker : public QObject

{

Q_OBJECT

public:

Worker(QThread* thread);

public slots:

void StartThread();

void EndThread();

private:

QThread* m_pCurrentThread;

};

// source file

#include "QDebug"

#include "QThread"

#include "worker.h"

Worker::Worker(QThread* thread)

{

m_pCurrentThread = thread;

}

void Worker::StartThread()

{

qDebug() << " StartThread";

while(true)

{

QThread::msleep(1000);

qDebug() << " thread running";

static int count = 0;

count++;

if(count == 10)

{

break;

}

if(m_pCurrentThread->isInterruptionRequested())

{

qDebug() << " is interrupt requested";

// Option 3:

m_pCurrentThread->exit();

}

}

qDebug() << "StartThread finished";

}

void Worker::EndThread()

{

qDebug() << "thread finished";

}

Main.cpp的

#include

#include "worker.h"

#include "QThread"

#include "QObject"

#include "QDebug"

int main(int argc, char *argv[])

{

QCoreApplication a(argc, argv);

QThread* thread = new QThread();

Worker* workerObj = new Worker(thread);

QObject::connect(thread,

SIGNAL(started()),

workerObj,

SLOT(StartThread()));

QObject::connect(thread,

SIGNAL(finished()),

workerObj,

SLOT(EndThread()));

workerObj->moveToThread(thread);

thread->start();

thread->requestInterruption();

QThread::msleep(2000);

qDebug() << "terminate thread";

if(thread->isRunning())

{

// Option 1,2 exit() / quit() used but got same output

thread->exit();

qDebug() << "wait on thread";

thread->wait();

}

qDebug() << " exiting main";

return a.exec();

}

現在,在’StartThread’完成并正常退出線程之前,我想從主線程中停止線程.

用過的,

> thread-> exit()

并在主線程中等待(thread-> wait()).

> thread-> quit()

并在主線程中等待(thread-> wait()).

>’StartThread’中的exit()

預期：

一旦從主線程調用exit()/ quit(),線程執行就應該停止.

實際：

在所有三個實例中,線程一直在運行,完成’StartThread’方法并正常退出.盡管沒有調用exit()/ quit().

輸出：

StartThread

thread running

is interrupt requested

terminate thread

wait on thread

thread running

is interrupt requested

thread running

is interrupt requested

thread running

is interrupt requested

thread running

is interrupt requested

thread running

is interrupt requested

thread running

is interrupt requested

thread running

is interrupt requested

thread running

is interrupt requested

thread running

StartThread finished

thread finished

exiting main

是否可以在主線程需要時停止/處理線程？

總結

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