/**
* 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 org.fusesource.hawtdispatch.internal.pool.SimplePool;
import org.fusesource.hawtdispatch.internal.util.IntrospectionSupport;
import java.util.LinkedList;
import java.util.concurrent.TimeUnit;
/**
*
* @author <a href="http://hiramchirino.com">Hiram Chirino</a>
*/
final public class GlobalDispatchQueue implements HawtDispatchQueue {
public final HawtDispatcher dispatcher;
volatile String label;
private final DispatchPriority priority;
final WorkerPool workers;
public GlobalDispatchQueue(HawtDispatcher dispatcher, DispatchPriority priority, int threads) {
this.dispatcher = dispatcher;
this.priority = priority;
this.label=priority.toString();
this.workers = new SimplePool(this, threads, priority);
dispatcher.track(this);
}
public void start() {
workers.start();
}
public void shutdown() {
workers.shutdown();
}
public HawtDispatcher getDispatcher() {
return dispatcher;
}
public String getLabel() {
return label;
}
public void setLabel(String label) {
this.label = label;
}
public boolean isExecuting() {
ThreadDispatchQueue tq = dispatcher.getCurrentThreadQueue();
if( tq!=null ){
return tq.globalQueue == this;
}
return false;
}
public LinkedList<Task> getSourceQueue() {
ThreadDispatchQueue tq = dispatcher.getCurrentThreadQueue();
if( tq!=null ){
return tq.getSourceQueue();
}
return null;
}
public void assertExecuting() {
assert isExecuting() : getDispatcher().assertMessage(getLabel());
}
@Deprecated
public void execute(final Runnable runnable) {
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) {
if( dispatcher.shutdownState.get() > 1 ) {
throw new ShutdownException();
}
workers.execute(task);
}
public void executeAfter(long delay, TimeUnit unit, Task task) {
if( dispatcher.shutdownState.get() > 0 ) {
throw new ShutdownException();
}
dispatcher.timerThread.addRelative(task, this, delay, unit);
}
public ThreadDispatchQueue getTargetQueue() {
return null;
}
public DispatchPriority getPriority() {
return priority;
}
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 GlobalDispatchQueue isGlobalDispatchQueue() {
return this;
}
public SerialDispatchQueue isSerialDispatchQueue() {
return null;
}
public ThreadDispatchQueue isThreadDispatchQueue() {
return null;
}
@Override
public String toString() {
return IntrospectionSupport.toString(this);
}
public DispatchQueue createQueue(String label) {
DispatchQueue rc = dispatcher.createQueue(label);
rc.setTargetQueue(this);
return rc;
}
public QueueType getQueueType() {
return QueueType.GLOBAL_QUEUE;
}
DispatchQueue[] getThreadQueues() {
WorkerThread[] threads = workers.getThreads();
DispatchQueue []rc = new DispatchQueue[threads.length];
for(int i=0;i < threads.length; i++){
rc[i] = threads[i].getDispatchQueue();
}
return rc;
}
public void profile(boolean profile) {
}
public boolean profile() {
return false;
}
public Metrics metrics() {
return null;
}
}