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/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.opengl;
import javax.media.opengl.GLRunnable;
import javax.media.opengl.GLAutoDrawable;
/**
* Helper class to provide a Runnable queue implementation with a Runnable wrapper
* which notifies after execution for the <code>invokeAndWait()</code> semantics.
*/
public class GLRunnableTask implements GLRunnable {
GLRunnable runnable;
Object notifyObject;
boolean catchExceptions;
volatile boolean isExecuted;
volatile boolean isFlushed;
Throwable runnableException;
public GLRunnableTask(GLRunnable runnable, Object notifyObject, boolean catchExceptions) {
this.runnable = runnable ;
this.notifyObject = notifyObject ;
this.catchExceptions = catchExceptions;
isExecuted = false;
isFlushed = false;
}
public boolean run(GLAutoDrawable drawable) {
boolean res = true;
if(null == notifyObject) {
try {
res = runnable.run(drawable);
} catch (Throwable t) {
runnableException = t;
if(catchExceptions) {
runnableException.printStackTrace();
} else {
throw new RuntimeException(runnableException);
}
} finally {
isExecuted=true;
}
} else {
synchronized (notifyObject) {
try {
res = runnable.run(drawable);
} catch (Throwable t) {
runnableException = t;
if(catchExceptions) {
runnableException.printStackTrace();
} else {
throw new RuntimeException(runnableException);
}
} finally {
isExecuted=true;
notifyObject.notifyAll();
}
}
}
return res;
}
/**
* Simply flush this task and notify a waiting executor.
* The executor which might have been blocked until notified
* will be unblocked and the task removed from the queue.
*
* @see #isFlushed()
* @see #isInQueue()
*/
public void flush() {
if(!isExecuted() && null != notifyObject) {
synchronized (notifyObject) {
isFlushed=true;
notifyObject.notifyAll();
}
}
}
/**
* @return !{@link #isExecuted()} && !{@link #isFlushed()}
*/
public boolean isInQueue() { return !isExecuted && !isFlushed; }
/**
* @return whether this task has been executed.
* @see #isInQueue()
*/
public boolean isExecuted() { return isExecuted; }
/**
* @return whether this task has been flushed.
* @see #isInQueue()
*/
public boolean isFlushed() { return isFlushed; }
public Throwable getThrowable() { return runnableException; }
}
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