/*
* Copyright 2012 The Netty Project
*
* 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 io.netty.channel.embedded;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPromise;
import io.netty.channel.DefaultChannelPromise;
import io.netty.channel.EventLoop;
import io.netty.channel.EventLoopGroup;
import io.netty.util.concurrent.AbstractScheduledEventExecutor;
import io.netty.util.concurrent.Future;
import io.netty.util.internal.ObjectUtil;
import java.util.ArrayDeque;
import java.util.Queue;
import java.util.concurrent.TimeUnit;
final class EmbeddedEventLoop extends AbstractScheduledEventExecutor implements EventLoop {
private final Queue<Runnable> tasks = new ArrayDeque<Runnable>(2);
@Override
public EventLoopGroup parent() {
return (EventLoopGroup) super.parent();
}
@Override
public EventLoop next() {
return (EventLoop) super.next();
}
@Override
public void execute(Runnable command) {
if (command == null) {
throw new NullPointerException("command");
}
tasks.add(command);
}
void runTasks() {
for (;;) {
Runnable task = tasks.poll();
if (task == null) {
break;
}
task.run();
}
}
long runScheduledTasks() {
long time = AbstractScheduledEventExecutor.nanoTime();
for (;;) {
Runnable task = pollScheduledTask(time);
if (task == null) {
return nextScheduledTaskNano();
}
task.run();
}
}
long nextScheduledTask() {
return nextScheduledTaskNano();
}
@Override
protected void cancelScheduledTasks() {
super.cancelScheduledTasks();
}
@Override
public Future<?> shutdownGracefully(long quietPeriod, long timeout, TimeUnit unit) {
throw new UnsupportedOperationException();
}
@Override
public Future<?> terminationFuture() {
throw new UnsupportedOperationException();
}
@Override
@Deprecated
public void shutdown() {
throw new UnsupportedOperationException();
}
@Override
public boolean isShuttingDown() {
return false;
}
@Override
public boolean isShutdown() {
return false;
}
@Override
public boolean isTerminated() {
return false;
}
@Override
public boolean awaitTermination(long timeout, TimeUnit unit) {
return false;
}
@Override
public ChannelFuture register(Channel channel) {
return register(new DefaultChannelPromise(channel, this));
}
@Override
public ChannelFuture register(ChannelPromise promise) {
ObjectUtil.checkNotNull(promise, "promise");
promise.channel().unsafe().register(this, promise);
return promise;
}
@Deprecated
@Override
public ChannelFuture register(Channel channel, ChannelPromise promise) {
channel.unsafe().register(this, promise);
return promise;
}
@Override
public boolean inEventLoop() {
return true;
}
@Override
public boolean inEventLoop(Thread thread) {
return true;
}
}