Q读取终止和亲和力

这个例子是用来测试QThread的。主要目标是能够在专用线程中运行一次耗时的阻塞方法，并且能够随时终止和重新启动线程。阻止方法是我们无法控制的第三方库。我知道Qt的文档不鼓励使用QThread：：终止，但目前我没有看到任何其他方法。

下面是在专用线程中运行所需的代码的 pseduo 示例。基本上有一种方法可能需要10-15分钟来处理。没有合乎逻辑的地方可以添加 moveToThread 以将亲和力带回 QThread：：terminate 上的主线程，或者执行 processEvent 来处理 QThread：：quit（） 方法。

void run()
{
  // initiate variables
  thirdparty lib(var1, var2);
  int res = lib.execute(var3, var4, var6);
  // handle result and exit
}

在 Windows 7 上使用 Qt 4.7。

运行代码会生成此输出

Test::doWork thread: QThread(0x219e960) 
Test::started thread: QThread(0x239bce8)
Test::doTerminate thread: QThread(0x239bce8) 
Test::doWork thread: QThread(0x239bce8) 
QObject::moveToThread: Current thread (0x219e960) is not the object's thread (0x239bce8). Cannot move to target thread (0x239bd20)

moveToThread API 在第二次执行 Test：:d oWork（） 方法时失败。这似乎是因为测试实例与另一个线程（此时终止）具有关联性。然后如何更改相关性？

终止和重新启动QThread的推荐方法是什么？是否需要删除测试实例？

代码;

#include <QCoreApplication>
#include <QThread>
#include <iostream>
#include <QDebug>
#include "Worker.h"
#include "Windows.h"
class Test : public QObject
{
  Q_OBJECT
  QThread* m_thread;
  int      m_state;
public:
    Test() : m_thread(0), m_state(3) { }
public slots:
    void doWork()
    {
      qDebug() << "Test::doWork thread:" << QObject::thread();
      if (!m_thread)
      {
        m_thread = new QThread();
        QObject::moveToThread(m_thread);
        QObject::connect(m_thread, SIGNAL(started()), this, SLOT(started()));
        QObject::connect(m_thread, SIGNAL(finished()), this, SLOT(finished()));
        QObject::connect(m_thread, SIGNAL(terminated()), this, SLOT(terminated()));
        m_thread->start();
      }
    }
    void started()
    {      
      qDebug() << "Test::started thread:" << QObject::thread();
      Sleep(60);
    }
    void finished()
    {
      qDebug() << "Test::finished thread:" << QObject::thread();
    }
    void terminated()
    {
      qDebug() << "Test::terminated thread:" << QObject::thread();
    }
    void doTerminate()
    {
      qDebug() << "Test::doTerminate thread:" << QObject::thread();
      QObject::disconnect(m_thread);
      m_thread->terminate();
      m_thread->wait();
      m_thread = NULL;
    }
    int state()
    {
      return m_state;
    }
};
int main(int argc, char *argv[])
{
  QCoreApplication a(argc, argv);
  Test test;
  test.doWork();
  Sleep(10);
  test.doTerminate();
  Sleep(10);
  test.doWork();
  return a.exec();
}