BALL::VIEW::BALLThread Class Reference

#include <BALL/VIEW/KERNEL/threads.h>

Inheritance diagram for BALL::VIEW::BALLThread:

Public Member Functions
	BALLThread ()
void	setMainControl (MainControl *mf)
void	setComposite (Composite *composite)
Composite *	getComposite ()
virtual void	run ()

Protected Member Functions
void	sendMessage_ (Message *msg)
void	updateStructure_ ()
void	output_ (const String &string, bool important=false)
	Sends the string as outout to Log.info. More...
void	waitForUpdateOfRepresentations_ ()

Protected Attributes
MainControl *	main_control_
Composite *	composite_

Detailed Description

Baseclass for threads in BALL. To use multithreading in BALL, there are several problems arising from the fact, that Qt itself is not threadsafe:

1. Prevent any output to Log, stdout or sterr. If a simulation has to print some informations, use the method output_, which will send an Event to the GUI-thread.
2. Dont call any Qt-methods directly. If you need some interaction with the GUI, send a QEvent to the MainControl.
3. Especially dont call the refresh methods for the Scene or GL-methods. Use updateStructure_() instead.
4. Overload the run method to insert the multithreaded code.
5. Call setMainControl() before running the thread
6. Before running a thread, lock the composites with ModularWidget::lockComposites().
7. After running a thread, unlock them with ModularWidget::unlockComposites(). If you dont pay attention to these rules, dont wonder if BALLView should freeze or crash!

Definition at line 69 of file threads.h.

Constructor & Destructor Documentation

BALL::VIEW::BALLThread::BALLThread

(

)

Member Function Documentation

Composite* BALL::VIEW::BALLThread::getComposite ( )

inline

Definition at line 84 of file threads.h.

void BALL::VIEW::BALLThread::output_ ( const String &  string, bool  important = false  )

protected

Sends the string as outout to Log.info.

virtual void BALL::VIEW::BALLThread::run ( )

inlinevirtual

Overloaded from QThread::run(), overload again in derived classes!

Reimplemented in BALL::VIEW::DockingThread, BALL::VIEW::MDSimulationThread, BALL::VIEW::EnergyMinimizerThread, BALL::VIEW::UpdateRepresentationThread, BALL::VIEW::CalculateFDPBThread, and BALL::VIEW::ServerWidget::BALLViewServer.

Definition at line 88 of file threads.h.

void BALL::VIEW::BALLThread::sendMessage_ ( Message *  msg )

protected

Send a VIEW Message to the main thread. Create the message on the heap!

void BALL::VIEW::BALLThread::setComposite ( Composite *  composite )

inline

Definition at line 81 of file threads.h.

void BALL::VIEW::BALLThread::setMainControl ( MainControl *  mf )

inline

Definition at line 78 of file threads.h.

void BALL::VIEW::BALLThread::updateStructure_ ( )

protected

Provokes an update of the Representation's and the Scene with rebuild of the display-lists. This method sends a CompositeMessage with a pointer to the Composite and type CHANGED_COMPOSITE. As a result, the method MainControl::updateRepresentationsOf(..) will be called.

void BALL::VIEW::BALLThread::waitForUpdateOfRepresentations_ ( )

protected

Wait until all Representation's are rebuild, by using RepresentationManager::updatePending() and \ RepresentationManager::getUpdateWaitCondition().wait() .

Member Data Documentation

Composite* BALL::VIEW::BALLThread::composite_

protected

Definition at line 115 of file threads.h.

MainControl* BALL::VIEW::BALLThread::main_control_

protected

Definition at line 114 of file threads.h.