PySide.QtCore.QRunnable class is the base class for all runnable objects.
PySide.QtCore.QRunnable class is an interface for representing a task or piece of code that needs to be executed, represented by your reimplementation of the PySide.QtCore.QRunnable.run() 函数。
可以使用 PySide.QtCore.QThreadPool to execute your code in a separate thread. PySide.QtCore.QThreadPool deletes the PySide.QtCore.QRunnable automatically if PySide.QtCore.QRunnable.autoDelete() returns true (the default). Use PySide.QtCore.QRunnable.setAutoDelete() to change the auto-deletion flag.
PySide.QtCore.QThreadPool supports executing the same PySide.QtCore.QRunnable more than once by calling QThreadPool::tryStart(this) from within the PySide.QtCore.QRunnable.run() function. If autoDelete is enabled the PySide.QtCore.QRunnable 将被删除当最后一个线程退出 run 函数时。调用 QThreadPool.start() multiple times with the same PySide.QtCore.QRunnable when autoDelete is enabled creates a race condition and is not recommended.
构造 PySide.QtCore.QRunnable . Auto-deletion is enabled by default.
| 返回类型： | PySide.QtCore.bool |
|---|
Returns true is auto-deletion is enabled; false otherwise.
If auto-deletion is enabled, PySide.QtCore.QThreadPool will automatically delete this runnable after calling PySide.QtCore.QRunnable.run() ; otherwise, ownership remains with the application programmer.
Implement this pure virtual function in your subclass.
| 参数： | _autoDelete – PySide.QtCore.bool |
|---|
Enables auto-deletion if autoDelete is true; otherwise auto-deletion is disabled.
If auto-deletion is enabled, PySide.QtCore.QThreadPool will automatically delete this runnable after calling PySide.QtCore.QRunnable.run() ; otherwise, ownership remains with the application programmer.
Note that this flag must be set before calling QThreadPool.start() . Calling this function after QThreadPool.start() results in undefined behavior.
