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/*
* Copyright 2009 - 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 com.jogamp.opencl;
import com.jogamp.common.AutoCloseable;
import com.jogamp.common.nio.CachedBufferFactory;
import com.jogamp.common.nio.PointerBuffer;
import java.util.Iterator;
/**
* Fixed size list for storing CLEvents.
* @author Michael Bien
*/
public final class CLEventList implements CLResource, AutoCloseable, Iterable<CLEvent> {
private final CLEvent[] events;
/**
* stores event ids for fast access.
*/
final PointerBuffer IDs;
/**
* Points always to the first element of the id buffer.
*/
final PointerBuffer IDsView;
int size;
public CLEventList(int capacity) {
this(null, capacity);
}
public CLEventList(CLEvent... events) {
this(null, events);
}
public CLEventList(CachedBufferFactory factory, int capacity) {
this.events = new CLEvent[capacity];
this.IDs = initIDBuffer(factory, capacity);
this.IDsView = IDs.duplicate();
}
public CLEventList(CachedBufferFactory factory, CLEvent... events) {
this.events = events;
this.IDs = initIDBuffer(factory, events.length);
this.IDsView = IDs.duplicate();
for (CLEvent event : events) {
if(event == null) {
throw new IllegalArgumentException("event list containes null element.");
}
IDs.put(event.ID);
}
IDs.rewind();
size = events.length;
}
private PointerBuffer initIDBuffer(CachedBufferFactory factory, int size) {
if(factory == null) {
return PointerBuffer.allocateDirect(size);
}else{
return PointerBuffer.wrap(factory.newDirectByteBuffer(size*PointerBuffer.ELEMENT_SIZE));
}
}
void createEvent(CLContext context) {
if(events[size] != null)
events[size].release();
events[size] = new CLEvent(context, IDs.get());
size++;
}
/**
* Releases all CLEvents in this list.
*/
public void release() {
for (int i = 0; i < size; i++) {
events[i].release();
events[i] = null;
}
size = 0;
IDs.rewind();
}
/**
* @deprecated use {@link #release()} instead.
*/
@Deprecated
public final void close() throws Exception {
release();
}
public CLEvent getEvent(int index) {
if(index >= size)
throw new IndexOutOfBoundsException("list contains "+size+" events, can not return event with index "+index);
return events[index];
}
/**
* Returns the current size of this list.
*/
public int size() {
return size;
}
/**
* Returns the maximum size of this list.
*/
public int capacity() {
return events.length;
}
public Iterator<CLEvent> iterator() {
return new EventIterator(events, size);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(getClass().getName()).append('[');
for (int i = 0; i < size; i++) {
sb.append(events[i].toString());
if(i+1 != size) {
sb.append(", ");
}
}
return sb.append(']').toString();
}
private static class EventIterator implements Iterator<CLEvent> {
private final CLEvent[] events;
private final int size;
private int index;
private EventIterator(CLEvent[] events, int size) {
this.events = events;
this.size = size;
}
public boolean hasNext() {
return index < size;
}
public CLEvent next() {
if(hasNext())
return events[index++];
else
return null;
}
public void remove() {
throw new UnsupportedOperationException("remove() not supported.");
}
}
}
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