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/*
* ServerCleaner.java February 2009
*
* Copyright (C) 2009, Niall Gallagher <niallg@users.sf.net>
*
* 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.simpleframework.transport;
import org.simpleframework.common.thread.ConcurrentExecutor;
import org.simpleframework.common.thread.Daemon;
import org.simpleframework.transport.reactor.Reactor;
/**
* The <code>ServerCleaner</code> object allows for the termination
* and resource recovery to be done asynchronously. This ensures that
* should a HTTP request be used to terminate the processor that it
* does not block waiting for the servicing thread pool to terminate
* causing a deadlock.
*
* @author Niall Gallagher
*/
class ServerCleaner extends Daemon {
/**
* This is the internal processor that is to be terminated.
*/
private final TransportProcessor processor;
/**
* This is the thread pool implementation used by the server.
*/
private final ConcurrentExecutor executor;
/**
* This is the internal write reactor that is terminated.
*/
private final Reactor reactor;
/**
* Constructor for the <code>ServerCleaner</code> object. For an
* orderly termination of the processor, the processor and reactor
* provided to the constructor will be stopped asynchronously.
*
* @param processor this is the processor that is to be stopped
* @param executor this is the executor used by the server
* @param reactor this is the reactor that is to be closed
*/
public ServerCleaner(TransportProcessor processor, ConcurrentExecutor executor, Reactor reactor) {
this.processor = processor;
this.executor = executor;
this.reactor = reactor;
}
/**
* When this method runs it will firstly stop the processor in
* a synchronous fashion. Once the <code>TransportProcessor</code>
* has stopped it will stop the <code>Reactor</code> ensuring that
* all threads will be released.
* <p>
* It is important to note that stopping the processor before
* stopping the reactor is required. This ensures that if there
* are any threads executing within the processor that require
* the reactor threads, they can complete without a problem.
*/
public void run() {
try {
processor.stop();
executor.stop();
reactor.stop();
} catch(Exception e) {
return;
}
}
}
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