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/*
* Copyright (c) 2011, Michael Bien
* 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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.
*
*/
/*
* Created on Tuesday, May 03 2011 18:09
*/
package com.jogamp.opencl.util.concurrent;
import com.jogamp.opencl.CLCommandQueue;
/**
* A task executed on a command queue.
* @author Michael Bien
*/
public abstract class CLTask<C extends CLQueueContext, R> {
/**
* Creates a CLQueueContext for this task. A context may contain static resources
* like OpenCL program binaries or pre allocated buffers. A context can be used by an group
* of tasks identified by a common context key ({@link #getContextKey()}). This method
* won't be called if a context was already created by an previously executed task having the
* same context key.
*/
public abstract C createQueueContext(CLCommandQueue queue);
/**
* Returns the context key for this task. Default implementation returns {@link #getClass()}.
*/
public Object getContextKey() {
return getClass();
}
/**
* Runs the task on a queue and returns a result.
*/
public abstract R execute(C context);
}
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