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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> *<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> */<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.mina.core.polling;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.net.SocketAddress;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.nio.channels.ClosedSelectorException;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.nio.channels.spi.SelectorProvider;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.Collections;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.HashMap;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.HashSet;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Iterator;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.List;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.Map;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.Queue;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.Set;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.concurrent.ConcurrentLinkedQueue;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.concurrent.Executor;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import java.util.concurrent.Executors;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import java.util.concurrent.Semaphore;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import java.util.concurrent.atomic.AtomicReference;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.mina.core.RuntimeIoException;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.mina.core.filterchain.IoFilter;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.mina.core.service.AbstractIoAcceptor;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.mina.core.service.AbstractIoService;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.mina.core.service.IoAcceptor;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.mina.core.service.IoHandler;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.mina.core.service.IoProcessor;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.mina.core.service.SimpleIoProcessorPool;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.mina.core.session.AbstractIoSession;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.mina.core.session.IoSession;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.mina.core.session.IoSessionConfig;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.mina.transport.socket.SocketSessionConfig;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.mina.transport.socket.nio.NioSocketAcceptor;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.mina.util.ExceptionMonitor;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span>/**<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * A base class for implementing transport using a polling strategy. The<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * underlying sockets will be checked in an active loop and woke up when an<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * socket needed to be processed. This class handle the logic behind binding,<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * accepting and disposing the server sockets. An {@link Executor} will be used<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * for running client accepting and an {@link AbstractPollingIoProcessor} will<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * be used for processing client I/O operations like reading, writing and<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * closing.<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * <a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * All the low level methods for binding, accepting, closing need to be provided<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * by the subclassing implementation.<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * <a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * @see NioSocketAcceptor for a example of implementation<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * <a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> */<a name="line.70"></a> |
| <span class="sourceLineNo">071</span>public abstract class AbstractPollingIoAcceptor<S extends AbstractIoSession, H> extends AbstractIoAcceptor {<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> /** A lock used to protect the selector to be waked up before it's created */<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> private final Semaphore lock = new Semaphore(1);<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private final IoProcessor<S> processor;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private final boolean createdProcessor;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span><a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private final Queue<AcceptorOperationFuture> registerQueue = new ConcurrentLinkedQueue<>();<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> private final Queue<AcceptorOperationFuture> cancelQueue = new ConcurrentLinkedQueue<>();<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private final Map<SocketAddress, H> boundHandles = Collections.synchronizedMap(new HashMap<SocketAddress, H>());<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private final ServiceOperationFuture disposalFuture = new ServiceOperationFuture();<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> /** A flag set when the acceptor has been created and initialized */<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> private volatile boolean selectable;<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> /** The thread responsible of accepting incoming requests */<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> private AtomicReference<Acceptor> acceptorRef = new AtomicReference<>();<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> protected boolean reuseAddress = false;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> /**<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * Define the number of socket that can wait to be accepted. Default<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * to 50 (as in the SocketServer default).<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> */<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> protected int backlog = 50;<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> /**<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * Constructor for {@link AbstractPollingIoAcceptor}. You need to provide a default<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * session configuration, a class of {@link IoProcessor} which will be instantiated in a<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * {@link SimpleIoProcessorPool} for better scaling in multiprocessor systems. The default<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * pool size will be used.<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * <a name="line.106"></a> |
| <span class="sourceLineNo">107</span> * @see SimpleIoProcessorPool<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * <a name="line.108"></a> |
| <span class="sourceLineNo">109</span> * @param sessionConfig<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * the default configuration for the managed {@link IoSession}<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> * @param processorClass a {@link Class}Â of {@link IoProcessor} for the associated {@link IoSession}<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> * type.<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> */<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> protected AbstractPollingIoAcceptor(IoSessionConfig sessionConfig, Class<? extends IoProcessor<S>> processorClass) {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> this(sessionConfig, null, new SimpleIoProcessorPool<S>(processorClass), true, null);<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> /**<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * Constructor for {@link AbstractPollingIoAcceptor}. You need to provide a default<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> * session configuration, a class of {@link IoProcessor} which will be instantiated in a<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> * {@link SimpleIoProcessorPool} for using multiple thread for better scaling in multiprocessor<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> * systems.<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> * <a name="line.123"></a> |
| <span class="sourceLineNo">124</span> * @see SimpleIoProcessorPool<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> * <a name="line.125"></a> |
| <span class="sourceLineNo">126</span> * @param sessionConfig<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> * the default configuration for the managed {@link IoSession}<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> * @param processorClass a {@link Class}Â of {@link IoProcessor} for the associated {@link IoSession}<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> * type.<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> * @param processorCount the amount of processor to instantiate for the pool<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> */<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> protected AbstractPollingIoAcceptor(IoSessionConfig sessionConfig, Class<? extends IoProcessor<S>> processorClass,<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> int processorCount) {<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> this(sessionConfig, null, new SimpleIoProcessorPool<S>(processorClass, processorCount), true, null);<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> }<a name="line.135"></a> |
| <span class="sourceLineNo">136</span><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> /**<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> * Constructor for {@link AbstractPollingIoAcceptor}. You need to provide a default<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> * session configuration, a class of {@link IoProcessor} which will be instantiated in a<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> * {@link SimpleIoProcessorPool} for using multiple thread for better scaling in multiprocessor<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> * systems.<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> *<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * @see SimpleIoProcessorPool<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> *<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * @param sessionConfig<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * the default configuration for the managed {@link IoSession}<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * @param processorClass a {@link Class} of {@link IoProcessor} for the associated {@link IoSession}<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> * type.<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> * @param processorCount the amount of processor to instantiate for the pool<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> * @param selectorProvider The SelectorProvider to use<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> */<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> protected AbstractPollingIoAcceptor(IoSessionConfig sessionConfig, Class<? extends IoProcessor<S>> processorClass,<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> int processorCount, SelectorProvider selectorProvider ) {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> this(sessionConfig, null, new SimpleIoProcessorPool<S>(processorClass, processorCount, selectorProvider), true, selectorProvider);<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> }<a name="line.155"></a> |
| <span class="sourceLineNo">156</span><a name="line.156"></a> |
| <span class="sourceLineNo">157</span> /**<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> * Constructor for {@link AbstractPollingIoAcceptor}. You need to provide a default<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> * session configuration, a default {@link Executor} will be created using<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * {@link Executors#newCachedThreadPool()}.<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * <a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * @see AbstractIoService<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> * <a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * @param sessionConfig<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * the default configuration for the managed {@link IoSession}<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * @param processor the {@link IoProcessor}Â for processing the {@link IoSession} of this transport, triggering<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * events to the bound {@link IoHandler} and processing the chains of {@link IoFilter}<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> */<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> protected AbstractPollingIoAcceptor(IoSessionConfig sessionConfig, IoProcessor<S> processor) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> this(sessionConfig, null, processor, false, null);<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> }<a name="line.171"></a> |
| <span class="sourceLineNo">172</span><a name="line.172"></a> |
| <span class="sourceLineNo">173</span> /**<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * Constructor for {@link AbstractPollingIoAcceptor}. You need to provide a<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> * default session configuration and an {@link Executor} for handling I/O<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> * events. If a null {@link Executor} is provided, a default one will be<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * created using {@link Executors#newCachedThreadPool()}.<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * <a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * @see AbstractIoService#AbstractIoService(IoSessionConfig, Executor)<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * <a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * @param sessionConfig<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> * the default configuration for the managed {@link IoSession}<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> * @param executor<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * the {@link Executor} used for handling asynchronous execution<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * of I/O events. Can be <code>null</code>.<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * @param processor<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * the {@link IoProcessor}Â for processing the {@link IoSession}<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * of this transport, triggering events to the bound<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> * {@link IoHandler} and processing the chains of<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> * {@link IoFilter}<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> */<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> protected AbstractPollingIoAcceptor(IoSessionConfig sessionConfig, Executor executor, IoProcessor<S> processor) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> this(sessionConfig, executor, processor, false, null);<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> }<a name="line.194"></a> |
| <span class="sourceLineNo">195</span><a name="line.195"></a> |
| <span class="sourceLineNo">196</span> /**<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * Constructor for {@link AbstractPollingIoAcceptor}. You need to provide a<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * default session configuration and an {@link Executor} for handling I/O<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * events. If a null {@link Executor} is provided, a default one will be<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * created using {@link Executors#newCachedThreadPool()}.<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> * <a name="line.201"></a> |
| <span class="sourceLineNo">202</span> * @see AbstractIoService(IoSessionConfig, Executor)<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> * <a name="line.203"></a> |
| <span class="sourceLineNo">204</span> * @param sessionConfig<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * the default configuration for the managed {@link IoSession}<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * @param executor<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * the {@link Executor} used for handling asynchronous execution<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> * of I/O events. Can be <code>null</code>.<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> * @param processor<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> * the {@link IoProcessor}Â for processing the {@link IoSession}<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> * of this transport, triggering events to the bound<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> * {@link IoHandler} and processing the chains of<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> * {@link IoFilter}<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> * @param createdProcessor<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> * tagging the processor as automatically created, so it will be<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> * automatically disposed<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> */<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> private AbstractPollingIoAcceptor(IoSessionConfig sessionConfig, Executor executor, IoProcessor<S> processor,<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> boolean createdProcessor, SelectorProvider selectorProvider) {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> super(sessionConfig, executor);<a name="line.220"></a> |
| <span class="sourceLineNo">221</span><a name="line.221"></a> |
| <span class="sourceLineNo">222</span> if (processor == null) {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> throw new IllegalArgumentException("processor");<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> }<a name="line.224"></a> |
| <span class="sourceLineNo">225</span><a name="line.225"></a> |
| <span class="sourceLineNo">226</span> this.processor = processor;<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> this.createdProcessor = createdProcessor;<a name="line.227"></a> |
| <span class="sourceLineNo">228</span><a name="line.228"></a> |
| <span class="sourceLineNo">229</span> try {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> // Initialize the selector<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> init(selectorProvider);<a name="line.231"></a> |
| <span class="sourceLineNo">232</span><a name="line.232"></a> |
| <span class="sourceLineNo">233</span> // The selector is now ready, we can switch the<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> // flag to true so that incoming connection can be accepted<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> selectable = true;<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> } catch (RuntimeException e) {<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> throw e;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> } catch (Exception e) {<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> throw new RuntimeIoException("Failed to initialize.", e);<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> } finally {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> if (!selectable) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> try {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> destroy();<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> } catch (Exception e) {<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> ExceptionMonitor.getInstance().exceptionCaught(e);<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> }<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> }<a name="line.249"></a> |
| <span class="sourceLineNo">250</span><a name="line.250"></a> |
| <span class="sourceLineNo">251</span> /**<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> * Initialize the polling system, will be called at construction time.<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> * @throws Exception any exception thrown by the underlying system calls<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> */<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> protected abstract void init() throws Exception;<a name="line.255"></a> |
| <span class="sourceLineNo">256</span><a name="line.256"></a> |
| <span class="sourceLineNo">257</span> /**<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * Initialize the polling system, will be called at construction time.<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * <a name="line.259"></a> |
| <span class="sourceLineNo">260</span> * @param selectorProvider The Selector Provider that will be used by this polling acceptor<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * @throws Exception any exception thrown by the underlying system calls<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> */<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> protected abstract void init(SelectorProvider selectorProvider) throws Exception;<a name="line.263"></a> |
| <span class="sourceLineNo">264</span><a name="line.264"></a> |
| <span class="sourceLineNo">265</span> /**<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> * Destroy the polling system, will be called when this {@link IoAcceptor}<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> * implementation will be disposed.<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> * @throws Exception any exception thrown by the underlying systems calls<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> */<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> protected abstract void destroy() throws Exception;<a name="line.270"></a> |
| <span class="sourceLineNo">271</span><a name="line.271"></a> |
| <span class="sourceLineNo">272</span> /**<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> * Check for acceptable connections, interrupt when at least a server is ready for accepting.<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> * All the ready server socket descriptors need to be returned by {@link #selectedHandles()}<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> * @return The number of sockets having got incoming client<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> * @throws Exception any exception thrown by the underlying systems calls<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> */<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> protected abstract int select() throws Exception;<a name="line.278"></a> |
| <span class="sourceLineNo">279</span><a name="line.279"></a> |
| <span class="sourceLineNo">280</span> /**<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> * Interrupt the {@link #select()} method. Used when the poll set need to be modified.<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> */<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> protected abstract void wakeup();<a name="line.283"></a> |
| <span class="sourceLineNo">284</span><a name="line.284"></a> |
| <span class="sourceLineNo">285</span> /**<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> * {@link Iterator} for the set of server sockets found with acceptable incoming connections<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * during the last {@link #select()} call.<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> * @return the list of server handles ready<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> */<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> protected abstract Iterator<H> selectedHandles();<a name="line.290"></a> |
| <span class="sourceLineNo">291</span><a name="line.291"></a> |
| <span class="sourceLineNo">292</span> /**<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> * Open a server socket for a given local address.<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> * @param localAddress the associated local address<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> * @return the opened server socket<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> * @throws Exception any exception thrown by the underlying systems calls<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> */<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> protected abstract H open(SocketAddress localAddress) throws Exception;<a name="line.298"></a> |
| <span class="sourceLineNo">299</span><a name="line.299"></a> |
| <span class="sourceLineNo">300</span> /**<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> * Get the local address associated with a given server socket<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> * @param handle the server socket<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> * @return the local {@link SocketAddress} associated with this handle<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> * @throws Exception any exception thrown by the underlying systems calls<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> */<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> protected abstract SocketAddress localAddress(H handle) throws Exception;<a name="line.306"></a> |
| <span class="sourceLineNo">307</span><a name="line.307"></a> |
| <span class="sourceLineNo">308</span> /**<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> * Accept a client connection for a server socket and return a new {@link IoSession}<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> * associated with the given {@link IoProcessor}<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> * @param processor the {@link IoProcessor} to associate with the {@link IoSession}<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> * @param handle the server handle<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> * @return the created {@link IoSession}<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> * @throws Exception any exception thrown by the underlying systems calls<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> */<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> protected abstract S accept(IoProcessor<S> processor, H handle) throws Exception;<a name="line.316"></a> |
| <span class="sourceLineNo">317</span><a name="line.317"></a> |
| <span class="sourceLineNo">318</span> /**<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> * Close a server socket.<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> * @param handle the server socket<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> * @throws Exception any exception thrown by the underlying systems calls<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> */<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> protected abstract void close(H handle) throws Exception;<a name="line.323"></a> |
| <span class="sourceLineNo">324</span><a name="line.324"></a> |
| <span class="sourceLineNo">325</span> /**<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> * {@inheritDoc}<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> */<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> @Override<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> protected void dispose0() throws Exception {<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> unbind();<a name="line.330"></a> |
| <span class="sourceLineNo">331</span><a name="line.331"></a> |
| <span class="sourceLineNo">332</span> startupAcceptor();<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> wakeup();<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> }<a name="line.334"></a> |
| <span class="sourceLineNo">335</span><a name="line.335"></a> |
| <span class="sourceLineNo">336</span> /**<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> * {@inheritDoc}<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> */<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> @Override<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> protected final Set<SocketAddress> bindInternal(List<? extends SocketAddress> localAddresses) throws Exception {<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> // Create a bind request as a Future operation. When the selector<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> // have handled the registration, it will signal this future.<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> AcceptorOperationFuture request = new AcceptorOperationFuture(localAddresses);<a name="line.343"></a> |
| <span class="sourceLineNo">344</span><a name="line.344"></a> |
| <span class="sourceLineNo">345</span> // adds the Registration request to the queue for the Workers<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> // to handle<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> registerQueue.add(request);<a name="line.347"></a> |
| <span class="sourceLineNo">348</span><a name="line.348"></a> |
| <span class="sourceLineNo">349</span> // creates the Acceptor instance and has the local<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> // executor kick it off.<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> startupAcceptor();<a name="line.351"></a> |
| <span class="sourceLineNo">352</span><a name="line.352"></a> |
| <span class="sourceLineNo">353</span> // As we just started the acceptor, we have to unblock the select()<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> // in order to process the bind request we just have added to the<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> // registerQueue.<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> try {<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> lock.acquire();<a name="line.357"></a> |
| <span class="sourceLineNo">358</span><a name="line.358"></a> |
| <span class="sourceLineNo">359</span> wakeup();<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> } finally {<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> lock.release();<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> }<a name="line.362"></a> |
| <span class="sourceLineNo">363</span><a name="line.363"></a> |
| <span class="sourceLineNo">364</span> // Now, we wait until this request is completed.<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> request.awaitUninterruptibly();<a name="line.365"></a> |
| <span class="sourceLineNo">366</span><a name="line.366"></a> |
| <span class="sourceLineNo">367</span> if (request.getException() != null) {<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> throw request.getException();<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> }<a name="line.369"></a> |
| <span class="sourceLineNo">370</span><a name="line.370"></a> |
| <span class="sourceLineNo">371</span> // Update the local addresses.<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> // setLocalAddresses() shouldn't be called from the worker thread<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> // because of deadlock.<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> Set<SocketAddress> newLocalAddresses = new HashSet<>();<a name="line.374"></a> |
| <span class="sourceLineNo">375</span><a name="line.375"></a> |
| <span class="sourceLineNo">376</span> for (H handle : boundHandles.values()) {<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> newLocalAddresses.add(localAddress(handle));<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> }<a name="line.378"></a> |
| <span class="sourceLineNo">379</span><a name="line.379"></a> |
| <span class="sourceLineNo">380</span> return newLocalAddresses;<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> }<a name="line.381"></a> |
| <span class="sourceLineNo">382</span><a name="line.382"></a> |
| <span class="sourceLineNo">383</span> /**<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> * This method is called by the doBind() and doUnbind()<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> * methods. If the acceptor is null, the acceptor object will<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> * be created and kicked off by the executor. If the acceptor<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> * object is null, probably already created and this class<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> * is now working, then nothing will happen and the method<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> * will just return.<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> */<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> private void startupAcceptor() throws InterruptedException {<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> // If the acceptor is not ready, clear the queues<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> // TODO : they should already be clean : do we have to do that ?<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> if (!selectable) {<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> registerQueue.clear();<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> cancelQueue.clear();<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> }<a name="line.397"></a> |
| <span class="sourceLineNo">398</span><a name="line.398"></a> |
| <span class="sourceLineNo">399</span> // start the acceptor if not already started<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> Acceptor acceptor = acceptorRef.get();<a name="line.400"></a> |
| <span class="sourceLineNo">401</span><a name="line.401"></a> |
| <span class="sourceLineNo">402</span> if (acceptor == null) {<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> lock.acquire();<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> acceptor = new Acceptor();<a name="line.404"></a> |
| <span class="sourceLineNo">405</span><a name="line.405"></a> |
| <span class="sourceLineNo">406</span> if (acceptorRef.compareAndSet(null, acceptor)) {<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> executeWorker(acceptor);<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> } else {<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> lock.release();<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> }<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> }<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> }<a name="line.412"></a> |
| <span class="sourceLineNo">413</span><a name="line.413"></a> |
| <span class="sourceLineNo">414</span> /**<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> * {@inheritDoc}<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> */<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> @Override<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> protected final void unbind0(List<? extends SocketAddress> localAddresses) throws Exception {<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> AcceptorOperationFuture future = new AcceptorOperationFuture(localAddresses);<a name="line.419"></a> |
| <span class="sourceLineNo">420</span><a name="line.420"></a> |
| <span class="sourceLineNo">421</span> cancelQueue.add(future);<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> startupAcceptor();<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> wakeup();<a name="line.423"></a> |
| <span class="sourceLineNo">424</span><a name="line.424"></a> |
| <span class="sourceLineNo">425</span> future.awaitUninterruptibly();<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> if (future.getException() != null) {<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> throw future.getException();<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> }<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> }<a name="line.429"></a> |
| <span class="sourceLineNo">430</span><a name="line.430"></a> |
| <span class="sourceLineNo">431</span> /**<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> * This class is called by the startupAcceptor() method and is<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> * placed into a NamePreservingRunnable class.<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> * It's a thread accepting incoming connections from clients.<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> * The loop is stopped when all the bound handlers are unbound.<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> */<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> private class Acceptor implements Runnable {<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> public void run() {<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> assert (acceptorRef.get() == this);<a name="line.439"></a> |
| <span class="sourceLineNo">440</span><a name="line.440"></a> |
| <span class="sourceLineNo">441</span> int nHandles = 0;<a name="line.441"></a> |
| <span class="sourceLineNo">442</span><a name="line.442"></a> |
| <span class="sourceLineNo">443</span> // Release the lock<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> lock.release();<a name="line.444"></a> |
| <span class="sourceLineNo">445</span><a name="line.445"></a> |
| <span class="sourceLineNo">446</span> while (selectable) {<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> try {<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> // Process the bound sockets to this acceptor.<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> // this actually sets the selector to OP_ACCEPT,<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> // and binds to the port on which this class will<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> // listen on. We do that before the select because <a name="line.451"></a> |
| <span class="sourceLineNo">452</span> // the registerQueue containing the new handler is<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> // already updated at this point.<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> nHandles += registerHandles();<a name="line.454"></a> |
| <span class="sourceLineNo">455</span><a name="line.455"></a> |
| <span class="sourceLineNo">456</span> // Detect if we have some keys ready to be processed<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> // The select() will be woke up if some new connection<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> // have occurred, or if the selector has been explicitly<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> // woke up<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> int selected = select();<a name="line.460"></a> |
| <span class="sourceLineNo">461</span><a name="line.461"></a> |
| <span class="sourceLineNo">462</span> // Now, if the number of registred handles is 0, we can<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> // quit the loop: we don't have any socket listening<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> // for incoming connection.<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> if (nHandles == 0) {<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> acceptorRef.set(null);<a name="line.466"></a> |
| <span class="sourceLineNo">467</span><a name="line.467"></a> |
| <span class="sourceLineNo">468</span> if (registerQueue.isEmpty() && cancelQueue.isEmpty()) {<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> assert (acceptorRef.get() != this);<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> break;<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> }<a name="line.471"></a> |
| <span class="sourceLineNo">472</span><a name="line.472"></a> |
| <span class="sourceLineNo">473</span> if (!acceptorRef.compareAndSet(null, this)) {<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> assert (acceptorRef.get() != this);<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> break;<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> }<a name="line.476"></a> |
| <span class="sourceLineNo">477</span><a name="line.477"></a> |
| <span class="sourceLineNo">478</span> assert (acceptorRef.get() == this);<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> }<a name="line.479"></a> |
| <span class="sourceLineNo">480</span><a name="line.480"></a> |
| <span class="sourceLineNo">481</span> if (selected > 0) {<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> // We have some connection request, let's process<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> // them here.<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> processHandles(selectedHandles());<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> }<a name="line.485"></a> |
| <span class="sourceLineNo">486</span><a name="line.486"></a> |
| <span class="sourceLineNo">487</span> // check to see if any cancellation request has been made.<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> nHandles -= unregisterHandles();<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> } catch (ClosedSelectorException cse) {<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> // If the selector has been closed, we can exit the loop<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> ExceptionMonitor.getInstance().exceptionCaught(cse);<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> break;<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> } catch (Exception e) {<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> ExceptionMonitor.getInstance().exceptionCaught(e);<a name="line.494"></a> |
| <span class="sourceLineNo">495</span><a name="line.495"></a> |
| <span class="sourceLineNo">496</span> try {<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> Thread.sleep(1000);<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> } catch (InterruptedException e1) {<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> ExceptionMonitor.getInstance().exceptionCaught(e1);<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> }<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> }<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> }<a name="line.502"></a> |
| <span class="sourceLineNo">503</span><a name="line.503"></a> |
| <span class="sourceLineNo">504</span> // Cleanup all the processors, and shutdown the acceptor.<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> if (selectable && isDisposing()) {<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> selectable = false;<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> try {<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> if (createdProcessor) {<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> processor.dispose();<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> }<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> } finally {<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> try {<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> synchronized (disposalLock) {<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> if (isDisposing()) {<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> destroy();<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> }<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> }<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> } catch (Exception e) {<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> ExceptionMonitor.getInstance().exceptionCaught(e);<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> } finally {<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> disposalFuture.setDone();<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> }<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> }<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> }<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> }<a name="line.525"></a> |
| <span class="sourceLineNo">526</span><a name="line.526"></a> |
| <span class="sourceLineNo">527</span> /**<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> * This method will process new sessions for the Worker class. All<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> * keys that have had their status updates as per the Selector.selectedKeys()<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> * method will be processed here. Only keys that are ready to accept<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> * connections are handled here.<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> * <p/><a name="line.532"></a> |
| <span class="sourceLineNo">533</span> * Session objects are created by making new instances of SocketSessionImpl<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> * and passing the session object to the SocketIoProcessor class.<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> */<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> @SuppressWarnings("unchecked")<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> private void processHandles(Iterator<H> handles) throws Exception {<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> while (handles.hasNext()) {<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> H handle = handles.next();<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> handles.remove();<a name="line.540"></a> |
| <span class="sourceLineNo">541</span><a name="line.541"></a> |
| <span class="sourceLineNo">542</span> // Associates a new created connection to a processor,<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> // and get back a session<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> S session = accept(processor, handle);<a name="line.544"></a> |
| <span class="sourceLineNo">545</span><a name="line.545"></a> |
| <span class="sourceLineNo">546</span> if (session == null) {<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> continue;<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> }<a name="line.548"></a> |
| <span class="sourceLineNo">549</span><a name="line.549"></a> |
| <span class="sourceLineNo">550</span> initSession(session, null, null);<a name="line.550"></a> |
| <span class="sourceLineNo">551</span><a name="line.551"></a> |
| <span class="sourceLineNo">552</span> // add the session to the SocketIoProcessor<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> session.getProcessor().add(session);<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> }<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> }<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> }<a name="line.556"></a> |
| <span class="sourceLineNo">557</span><a name="line.557"></a> |
| <span class="sourceLineNo">558</span> /**<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> * Sets up the socket communications. Sets items such as:<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> * <p/><a name="line.560"></a> |
| <span class="sourceLineNo">561</span> * Blocking<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> * Reuse address<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> * Receive buffer size<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> * Bind to listen port<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> * Registers OP_ACCEPT for selector<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> */<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> private int registerHandles() {<a name="line.567"></a> |
| <span class="sourceLineNo">568</span> for (;;) {<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> // The register queue contains the list of services to manage<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> // in this acceptor.<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> AcceptorOperationFuture future = registerQueue.poll();<a name="line.571"></a> |
| <span class="sourceLineNo">572</span><a name="line.572"></a> |
| <span class="sourceLineNo">573</span> if (future == null) {<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> return 0;<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> }<a name="line.575"></a> |
| <span class="sourceLineNo">576</span><a name="line.576"></a> |
| <span class="sourceLineNo">577</span> // We create a temporary map to store the bound handles,<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> // as we may have to remove them all if there is an exception<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> // during the sockets opening.<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> Map<SocketAddress, H> newHandles = new ConcurrentHashMap<>();<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> List<SocketAddress> localAddresses = future.getLocalAddresses();<a name="line.581"></a> |
| <span class="sourceLineNo">582</span><a name="line.582"></a> |
| <span class="sourceLineNo">583</span> try {<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> // Process all the addresses<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> for (SocketAddress a : localAddresses) {<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> H handle = open(a);<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> newHandles.put(localAddress(handle), handle);<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> }<a name="line.588"></a> |
| <span class="sourceLineNo">589</span><a name="line.589"></a> |
| <span class="sourceLineNo">590</span> // Everything went ok, we can now update the map storing<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> // all the bound sockets.<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> boundHandles.putAll(newHandles);<a name="line.592"></a> |
| <span class="sourceLineNo">593</span><a name="line.593"></a> |
| <span class="sourceLineNo">594</span> // and notify.<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> future.setDone();<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> <a name="line.596"></a> |
| <span class="sourceLineNo">597</span> return newHandles.size();<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> } catch (Exception e) {<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> // We store the exception in the future<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> future.setException(e);<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> } finally {<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> // Roll back if failed to bind all addresses.<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> if (future.getException() != null) {<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> for (H handle : newHandles.values()) {<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> try {<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> close(handle);<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> } catch (Exception e) {<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> ExceptionMonitor.getInstance().exceptionCaught(e);<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> }<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> }<a name="line.610"></a> |
| <span class="sourceLineNo">611</span><a name="line.611"></a> |
| <span class="sourceLineNo">612</span> // Wake up the selector to be sure we will process the newly bound handle<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> // and not block forever in the select()<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> wakeup();<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> }<a name="line.615"></a> |
| <span class="sourceLineNo">616</span> }<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> }<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> }<a name="line.618"></a> |
| <span class="sourceLineNo">619</span><a name="line.619"></a> |
| <span class="sourceLineNo">620</span> /**<a name="line.620"></a> |
| <span class="sourceLineNo">621</span> * This method just checks to see if anything has been placed into the<a name="line.621"></a> |
| <span class="sourceLineNo">622</span> * cancellation queue. The only thing that should be in the cancelQueue<a name="line.622"></a> |
| <span class="sourceLineNo">623</span> * is CancellationRequest objects and the only place this happens is in<a name="line.623"></a> |
| <span class="sourceLineNo">624</span> * the doUnbind() method.<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> */<a name="line.625"></a> |
| <span class="sourceLineNo">626</span> private int unregisterHandles() {<a name="line.626"></a> |
| <span class="sourceLineNo">627</span> int cancelledHandles = 0;<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> for (;;) {<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> AcceptorOperationFuture future = cancelQueue.poll();<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> if (future == null) {<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> break;<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> }<a name="line.632"></a> |
| <span class="sourceLineNo">633</span><a name="line.633"></a> |
| <span class="sourceLineNo">634</span> // close the channels<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> for (SocketAddress a : future.getLocalAddresses()) {<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> H handle = boundHandles.remove(a);<a name="line.636"></a> |
| <span class="sourceLineNo">637</span><a name="line.637"></a> |
| <span class="sourceLineNo">638</span> if (handle == null) {<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> continue;<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> }<a name="line.640"></a> |
| <span class="sourceLineNo">641</span><a name="line.641"></a> |
| <span class="sourceLineNo">642</span> try {<a name="line.642"></a> |
| <span class="sourceLineNo">643</span> close(handle);<a name="line.643"></a> |
| <span class="sourceLineNo">644</span> wakeup(); // wake up again to trigger thread death<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> } catch (Exception e) {<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> ExceptionMonitor.getInstance().exceptionCaught(e);<a name="line.646"></a> |
| <span class="sourceLineNo">647</span> } finally {<a name="line.647"></a> |
| <span class="sourceLineNo">648</span> cancelledHandles++;<a name="line.648"></a> |
| <span class="sourceLineNo">649</span> }<a name="line.649"></a> |
| <span class="sourceLineNo">650</span> }<a name="line.650"></a> |
| <span class="sourceLineNo">651</span><a name="line.651"></a> |
| <span class="sourceLineNo">652</span> future.setDone();<a name="line.652"></a> |
| <span class="sourceLineNo">653</span> }<a name="line.653"></a> |
| <span class="sourceLineNo">654</span><a name="line.654"></a> |
| <span class="sourceLineNo">655</span> return cancelledHandles;<a name="line.655"></a> |
| <span class="sourceLineNo">656</span> }<a name="line.656"></a> |
| <span class="sourceLineNo">657</span><a name="line.657"></a> |
| <span class="sourceLineNo">658</span> /**<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> * {@inheritDoc}<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> */<a name="line.660"></a> |
| <span class="sourceLineNo">661</span> @Override<a name="line.661"></a> |
| <span class="sourceLineNo">662</span> public final IoSession newSession(SocketAddress remoteAddress, SocketAddress localAddress) {<a name="line.662"></a> |
| <span class="sourceLineNo">663</span> throw new UnsupportedOperationException();<a name="line.663"></a> |
| <span class="sourceLineNo">664</span> }<a name="line.664"></a> |
| <span class="sourceLineNo">665</span><a name="line.665"></a> |
| <span class="sourceLineNo">666</span> /**<a name="line.666"></a> |
| <span class="sourceLineNo">667</span> * @return the backLog<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> */<a name="line.668"></a> |
| <span class="sourceLineNo">669</span> public int getBacklog() {<a name="line.669"></a> |
| <span class="sourceLineNo">670</span> return backlog;<a name="line.670"></a> |
| <span class="sourceLineNo">671</span> }<a name="line.671"></a> |
| <span class="sourceLineNo">672</span><a name="line.672"></a> |
| <span class="sourceLineNo">673</span> /**<a name="line.673"></a> |
| <span class="sourceLineNo">674</span> * Sets the Backlog parameter<a name="line.674"></a> |
| <span class="sourceLineNo">675</span> * <a name="line.675"></a> |
| <span class="sourceLineNo">676</span> * @param backlog<a name="line.676"></a> |
| <span class="sourceLineNo">677</span> * the backlog variable<a name="line.677"></a> |
| <span class="sourceLineNo">678</span> */<a name="line.678"></a> |
| <span class="sourceLineNo">679</span> public void setBacklog(int backlog) {<a name="line.679"></a> |
| <span class="sourceLineNo">680</span> synchronized (bindLock) {<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> if (isActive()) {<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> throw new IllegalStateException("backlog can't be set while the acceptor is bound.");<a name="line.682"></a> |
| <span class="sourceLineNo">683</span> }<a name="line.683"></a> |
| <span class="sourceLineNo">684</span><a name="line.684"></a> |
| <span class="sourceLineNo">685</span> this.backlog = backlog;<a name="line.685"></a> |
| <span class="sourceLineNo">686</span> }<a name="line.686"></a> |
| <span class="sourceLineNo">687</span> }<a name="line.687"></a> |
| <span class="sourceLineNo">688</span><a name="line.688"></a> |
| <span class="sourceLineNo">689</span> /**<a name="line.689"></a> |
| <span class="sourceLineNo">690</span> * @return the flag that sets the reuseAddress information<a name="line.690"></a> |
| <span class="sourceLineNo">691</span> */<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> public boolean isReuseAddress() {<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> return reuseAddress;<a name="line.693"></a> |
| <span class="sourceLineNo">694</span> }<a name="line.694"></a> |
| <span class="sourceLineNo">695</span><a name="line.695"></a> |
| <span class="sourceLineNo">696</span> /**<a name="line.696"></a> |
| <span class="sourceLineNo">697</span> * Set the Reuse Address flag<a name="line.697"></a> |
| <span class="sourceLineNo">698</span> * <a name="line.698"></a> |
| <span class="sourceLineNo">699</span> * @param reuseAddress<a name="line.699"></a> |
| <span class="sourceLineNo">700</span> * The flag to set<a name="line.700"></a> |
| <span class="sourceLineNo">701</span> */<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> public void setReuseAddress(boolean reuseAddress) {<a name="line.702"></a> |
| <span class="sourceLineNo">703</span> synchronized (bindLock) {<a name="line.703"></a> |
| <span class="sourceLineNo">704</span> if (isActive()) {<a name="line.704"></a> |
| <span class="sourceLineNo">705</span> throw new IllegalStateException("backlog can't be set while the acceptor is bound.");<a name="line.705"></a> |
| <span class="sourceLineNo">706</span> }<a name="line.706"></a> |
| <span class="sourceLineNo">707</span><a name="line.707"></a> |
| <span class="sourceLineNo">708</span> this.reuseAddress = reuseAddress;<a name="line.708"></a> |
| <span class="sourceLineNo">709</span> }<a name="line.709"></a> |
| <span class="sourceLineNo">710</span> }<a name="line.710"></a> |
| <span class="sourceLineNo">711</span><a name="line.711"></a> |
| <span class="sourceLineNo">712</span> /**<a name="line.712"></a> |
| <span class="sourceLineNo">713</span> * {@inheritDoc}<a name="line.713"></a> |
| <span class="sourceLineNo">714</span> */<a name="line.714"></a> |
| <span class="sourceLineNo">715</span> @Override<a name="line.715"></a> |
| <span class="sourceLineNo">716</span> public SocketSessionConfig getSessionConfig() {<a name="line.716"></a> |
| <span class="sourceLineNo">717</span> return (SocketSessionConfig)sessionConfig;<a name="line.717"></a> |
| <span class="sourceLineNo">718</span> }<a name="line.718"></a> |
| <span class="sourceLineNo">719</span>}<a name="line.719"></a> |
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| </div> |
| </body> |
| </html> |
