/*
* Copyright 2012 The Netty Project
* Copyright 2013 Red Hat, Inc.
*
* The Netty Project licenses this file to you 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.netty;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPromise;
import io.netty.channel.EventExecutor;
import io.netty.channel.EventLoopGroup;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* Abstract base class for {@link EventLoopGroup} implementations that are backed by hawtdispatch.
*
* @author <a href="mailto:nmaurer@redhat.com">Norman Maurer</a>
*/
abstract class AbstractHawtEventLoopGroup implements EventLoopGroup {
@Override
public ChannelFuture register(Channel channel) {
return next().register(channel);
}
@Override
public ChannelFuture register(Channel channel, ChannelPromise promise) {
return next().register(channel, promise);
}
/**
* Return a safe-copy of all of the children of this group.
*/
protected abstract Set<EventExecutor> children();
@Override
public void shutdown() {
if (isShutdown()) {
return;
}
for (EventExecutor l: children()) {
l.shutdown();
}
}
@Override
public boolean isShutdown() {
for (EventExecutor l: children()) {
if (!l.isShutdown()) {
return false;
}
}
return true;
}
@Override
public boolean isTerminated() {
for (EventExecutor l: children()) {
if (!l.isTerminated()) {
return false;
}
}
return true;
}
@Override
public boolean awaitTermination(long timeout, TimeUnit unit)
throws InterruptedException {
long deadline = System.nanoTime() + unit.toNanos(timeout);
loop: for (EventExecutor l: children()) {
for (;;) {
long timeLeft = deadline - System.nanoTime();
if (timeLeft <= 0) {
break loop;
}
if (l.awaitTermination(timeLeft, TimeUnit.NANOSECONDS)) {
break;
}
}
}
return isTerminated();
}
}