co.paralleluniverse.strands.channels.QueueLongChannel Maven / Gradle / Ivy
/*
* Quasar: lightweight threads and actors for the JVM.
* Copyright (c) 2013-2014, Parallel Universe Software Co. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 3.0
* as published by the Free Software Foundation.
*/
package co.paralleluniverse.strands.channels;
import co.paralleluniverse.fibers.SuspendExecution;
import co.paralleluniverse.strands.Timeout;
import co.paralleluniverse.strands.channels.Channels.OverflowPolicy;
import co.paralleluniverse.strands.queues.BasicSingleConsumerLongQueue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
*
* @author pron
*/
public class QueueLongChannel extends QueuePrimitiveChannel implements LongChannel {
public QueueLongChannel(BasicSingleConsumerLongQueue queue, OverflowPolicy policy) {
super(queue, policy);
}
@Override
public long receiveLong() throws SuspendExecution, InterruptedException, EOFException {
checkClosed();
awaitItem();
final long m = queue().pollLong();
signalSenders();
return m;
}
@Override
public long receiveLong(long timeout, TimeUnit unit) throws SuspendExecution, InterruptedException, TimeoutException, EOFException {
checkClosed();
if (!awaitItem(timeout, unit))
throw new TimeoutException();
final long m = queue().pollLong();
signalSenders();
return m;
}
@Override
public long receiveLong(Timeout timeout) throws SuspendExecution, InterruptedException, TimeoutException, EOFException {
return receiveLong(timeout.nanosLeft(), TimeUnit.NANOSECONDS);
}
@Override
public boolean trySend(long message) {
if (isSendClosed())
return true;
if (queue().enq(message)) {
signalReceivers();
return true;
} else
return false;
}
@Override
public void send(long message) throws SuspendExecution, InterruptedException {
if (isSendClosed())
return;
if (!queue().enq(message))
super.send(message);
else
signalReceivers();
}
@Override
public boolean send(long message, long timeout, TimeUnit unit) throws SuspendExecution, InterruptedException {
if (isSendClosed())
return true;
if (!queue().enq(message))
return super.send(message, timeout, unit);
signalReceivers();
return true;
}
@Override
public boolean send(long message, Timeout timeout) throws SuspendExecution, InterruptedException {
return send(message, timeout.nanosLeft(), TimeUnit.NANOSECONDS);
}
@Override
protected BasicSingleConsumerLongQueue queue() {
return (BasicSingleConsumerLongQueue) queue;
}
}