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/*
* 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 org.glowroot.shaded.netty.channel;
/**
* {@link SingleThreadEventLoop} which is used to handle OIO {@link Channel}'s. So in general there will be
* one {@link ThreadPerChannelEventLoop} per {@link Channel}.
*
*/
public class ThreadPerChannelEventLoop extends SingleThreadEventLoop {
private final ThreadPerChannelEventLoopGroup parent;
private Channel ch;
public ThreadPerChannelEventLoop(ThreadPerChannelEventLoopGroup parent) {
super(parent, parent.threadFactory, true);
this.parent = parent;
}
@Override
public ChannelFuture register(Channel channel, ChannelPromise promise) {
return super.register(channel, promise).addListener(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
if (future.isSuccess()) {
ch = future.channel();
} else {
deregister();
}
}
});
}
@Override
protected void run() {
for (;;) {
Runnable task = takeTask();
if (task != null) {
task.run();
updateLastExecutionTime();
}
Channel ch = this.ch;
if (isShuttingDown()) {
if (ch != null) {
ch.unsafe().close(ch.unsafe().voidPromise());
}
if (confirmShutdown()) {
break;
}
} else {
if (ch != null) {
// Handle deregistration
if (!ch.isRegistered()) {
runAllTasks();
deregister();
}
}
}
}
}
protected void deregister() {
ch = null;
parent.activeChildren.remove(this);
parent.idleChildren.add(this);
}
}