/**
* Copyright (C) 2012 FuseSource, Inc.
* http://fusesource.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.fusesource.hawtdispatch.internal;
import org.fusesource.hawtdispatch.*;
import java.util.LinkedList;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.TimeUnit;
/**
*
* @author <a href="http://hiramchirino.com">Hiram Chirino</a>
*/
final public class ThreadDispatchQueue implements HawtDispatchQueue {
volatile String label;
final LinkedList<Task> localTasks = new LinkedList<Task>();
final ConcurrentLinkedQueue<Task> sharedTasks = new ConcurrentLinkedQueue<Task>();
final WorkerThread thread;
final GlobalDispatchQueue globalQueue;
private final LinkedList<Task> sourceQueue= new LinkedList<Task>();
public ThreadDispatchQueue(GlobalDispatchQueue globalQueue, WorkerThread thread) {
this.thread = thread;
this.globalQueue = globalQueue;
this.label=thread.getName()+" pritority: "+globalQueue.getLabel();
getDispatcher().track(this);
}
public LinkedList<Task> getSourceQueue() {
return sourceQueue;
}
public String getLabel() {
return label;
}
public void setLabel(String label) {
this.label = label;
}
public boolean isExecuting() {
return globalQueue.dispatcher.getCurrentThreadQueue() == this;
}
public void assertExecuting() {
assert isExecuting() : getDispatcher().assertMessage(getLabel());
}
public HawtDispatcher getDispatcher() {
return globalQueue.dispatcher;
}
@Deprecated
public void execute(Runnable runnable) {
this.execute(new TaskWrapper(runnable));
}
@Deprecated
public void executeAfter(long delay, TimeUnit unit, Runnable runnable) {
this.executeAfter(delay, unit, new TaskWrapper(runnable));
}
public void execute(Task task) {
// We don't have to take the synchronization hit
if( Thread.currentThread()!=thread ) {
sharedTasks.add(task);
thread.unpark();
} else {
localTasks.add(task);
}
}
public Task poll() {
Task rc = localTasks.poll();
if (rc ==null) {
rc = sharedTasks.poll();
}
return rc;
}
public void executeAfter(long delay, TimeUnit unit, Task task) {
getDispatcher().timerThread.addRelative(task, this, delay, unit);
}
public void resume() {
throw new UnsupportedOperationException();
}
public void suspend() {
throw new UnsupportedOperationException();
}
public boolean isSuspended() {
throw new UnsupportedOperationException();
}
public void setTargetQueue(DispatchQueue queue) {
throw new UnsupportedOperationException();
}
public HawtDispatchQueue getTargetQueue() {
return null;
}
public DispatchPriority getPriority() {
return globalQueue.getPriority();
}
public GlobalDispatchQueue isGlobalDispatchQueue() {
return null;
}
public SerialDispatchQueue isSerialDispatchQueue() {
return null;
}
public ThreadDispatchQueue isThreadDispatchQueue() {
return this;
}
public DispatchQueue createQueue(String label) {
DispatchQueue rc = globalQueue.dispatcher.createQueue(label);
rc.setTargetQueue(this);
return rc;
}
public QueueType getQueueType() {
return QueueType.THREAD_QUEUE;
}
public void profile(boolean on) {
}
public boolean profile() {
return false;
}
public Metrics metrics() {
return null;
}
public WorkerThread getThread() {
return thread;
}
}