Question

让我举一个例子。

class B : public  QThread {
public:
  void run() {
  }
};

class A : public QThread {
public:
  void run() {
     b1.start(); b2.start();
  }
protected:
  B b1, b2;
};

I want A::b1 and A::b2 to run as completely independent threads, not sharing resources of parent thread (A). Is there any way to specify main thread as parent thread of b1 and b2?

我也审视了QThreadPool和QRunnable,并且不理解如何管理所有可操作的(例如,阻止其中之一,然后再管理)透水池。

Answer 1

wrong way, 即在Qt.建立read>。 http://doc.qt.nokia.com/stable/qobject.html#move ToThread”rel=“nofollow”move ToThread 这只是允许你改变物体及其子女的亲子关系。




  Changes the thread affinity for this object and its children. The
  object cannot be moved if it has a parent. Event processing will
  continue in the targetThread.
  
  To move an object to the main thread, use QApplication::instance() to
  retrieve a pointer to the current application, and then use
  QApplication::thread() to retrieve the thread in which the application
  lives.

因此,你应当做的是继承<代码>QObject而不是QThread,并改变您的运行功能,将B物体移至其他深层。

抽样法(未经过测试)

class B : public  QObject {
  Q_OBJECT
public:
  void run() {
  }
};

class A : public QObject {
  Q_OBJECT
public:
  void run() {
     b1Thread = new QThread;
     b2Thread = new QThread;
     b1.moveToThread(b1Thread);
     b2.moveToThread(b2Thread);

     b1.run(); 
     b2.run();
  }
protected:
  B b1, b2;
private:
  QThread* b1Thread, b2Thread; // Delete them in the destructor.
};

您可在<代码>main.cpp上构筑read,并将其通过<代码>。 B 为论据。

关于<代码>move ToThread的通知

this function can only "push" an object from the current thread to another thread, it cannot "pull" an object from any arbitrary thread to the current thread.

友情链接