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java.lang.Objectcom.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.core.QRunnable
public abstract class QRunnable
The QRunnable
class is the base class for all runnable objects. The QRunnable
class is an interface for representing a task or piece of code that needs to be executed, represented by your reimplementation of the run()
function.
You can use QThreadPool
to execute your code in a separate thread. QThreadPool
deletes the QRunnable
automatically if autoDelete()
returns true (the default). Use setAutoDelete()
to change the auto-deletion flag.
QThreadPool
supports executing the same QRunnable
more than once by calling QThreadPool::tryStart
(this) from within the run()
function. If autoDelete
is enabled the QRunnable
will be deleted when the last thread exits the run function. Calling QThreadPool::start()
multiple times with the same QRunnable
when autoDelete
is enabled creates a race condition and is not recommended.
QThreadPool
.
Nested Class Summary |
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Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter |
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QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9 |
Constructor Summary | |
---|---|
QRunnable()
Constructs a QRunnable . |
Method Summary | |
---|---|
boolean |
autoDelete()
Returns true is auto-deletion is enabled; false otherwise. |
static QRunnable |
fromNativePointer(QNativePointer nativePointer)
|
abstract void |
run()
Implement this pure virtual function in your subclass. |
void |
setAutoDelete(boolean _autoDelete)
Enables auto-deletion if autoDelete is true; otherwise auto-deletion is disabled. |
Methods inherited from class com.trolltech.qt.QtJambiObject |
---|
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
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blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread |
Methods inherited from class java.lang.Object |
---|
clone, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
---|
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
---|
public QRunnable()
QRunnable
. Auto-deletion is enabled by default. autoDelete()
, and setAutoDelete()
.
Method Detail |
---|
public final boolean autoDelete()
If auto-deletion is enabled, QThreadPool
will automatically delete this runnable after calling run()
; otherwise, ownership remains with the application programmer.
setAutoDelete()
, and QThreadPool
.
public final void setAutoDelete(boolean _autoDelete)
If auto-deletion is enabled, QThreadPool
will automatically delete this runnable after calling 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.
autoDelete()
, and QThreadPool
.
public abstract void run()
public static QRunnable fromNativePointer(QNativePointer nativePointer)
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