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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.io.IOException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.net.PortUnreachableException;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.nio.channels.ClosedSelectorException;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.ArrayList;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.Iterator;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Queue;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.concurrent.ConcurrentLinkedQueue;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.concurrent.Executor;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.concurrent.atomic.AtomicReference;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.mina.core.buffer.IoBuffer;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.mina.core.file.FileRegion;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.mina.core.filterchain.IoFilterChain;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.mina.core.filterchain.IoFilterChainBuilder;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.mina.core.future.DefaultIoFuture;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.mina.core.service.AbstractIoService;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.mina.core.service.IoProcessor;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.apache.mina.core.service.IoServiceListenerSupport;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.apache.mina.core.session.AbstractIoSession;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.mina.core.session.IoSession;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.apache.mina.core.session.IoSessionConfig;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.apache.mina.core.session.SessionState;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span>import org.apache.mina.core.write.WriteRequest;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.mina.core.write.WriteRequestQueue;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.mina.core.write.WriteToClosedSessionException;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>import org.apache.mina.transport.socket.AbstractDatagramSessionConfig;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span>import org.apache.mina.util.ExceptionMonitor;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span>import org.apache.mina.util.NamePreservingRunnable;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>import org.slf4j.Logger;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>import org.slf4j.LoggerFactory;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span><a name="line.56"></a> |
| <span class="sourceLineNo">057</span>/**<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * An abstract implementation of {@link IoProcessor} which helps transport<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * developers to write an {@link IoProcessor} easily. This class is in charge of<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * active polling a set of {@link IoSession} and trigger events when some I/O<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * operation is possible.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * <a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * <a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * @param <S><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * the type of the {@link IoSession} this processor can handle<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> */<a name="line.67"></a> |
| <span class="sourceLineNo">068</span>public abstract class AbstractPollingIoProcessor<S extends AbstractIoSession> implements IoProcessor<S> {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> /** A logger for this class */<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> private final static Logger LOG = LoggerFactory.getLogger(IoProcessor.class);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span><a name="line.71"></a> |
| <span class="sourceLineNo">072</span> /**<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * The maximum loop count for a write operation until<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * {@link #write(AbstractIoSession, IoBuffer, int)} returns non-zero value.<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * It is similar to what a spin lock is for in concurrency programming. It<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * improves memory utilization and write throughput significantly.<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> */<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private static final int WRITE_SPIN_COUNT = 256;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> /**<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * A timeout used for the select, as we need to get out to deal with idle<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * sessions<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> */<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private static final long SELECT_TIMEOUT = 1000L;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> /** A map containing the last Thread ID for each class */<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> private static final ConcurrentHashMap<Class<?>, AtomicInteger> threadIds = new ConcurrentHashMap<Class<?>, AtomicInteger>();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> /** This IoProcessor instance name */<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> private final String threadName;<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> /** The executor to use when we need to start the inner Processor */<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> private final Executor executor;<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> /** A Session queue containing the newly created sessions */<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> private final Queue<S> newSessions = new ConcurrentLinkedQueue<S>();<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> /** A queue used to store the sessions to be removed */<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> private final Queue<S> removingSessions = new ConcurrentLinkedQueue<S>();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> /** A queue used to store the sessions to be flushed */<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> private final Queue<S> flushingSessions = new ConcurrentLinkedQueue<S>();<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> /**<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * A queue used to store the sessions which have a trafficControl to be<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * updated<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> */<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> private final Queue<S> trafficControllingSessions = new ConcurrentLinkedQueue<S>();<a name="line.108"></a> |
| <span class="sourceLineNo">109</span><a name="line.109"></a> |
| <span class="sourceLineNo">110</span> /** The processor thread : it handles the incoming messages */<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> private final AtomicReference<Processor> processorRef = new AtomicReference<Processor>();<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> private long lastIdleCheckTime;<a name="line.113"></a> |
| <span class="sourceLineNo">114</span><a name="line.114"></a> |
| <span class="sourceLineNo">115</span> private final Object disposalLock = new Object();<a name="line.115"></a> |
| <span class="sourceLineNo">116</span><a name="line.116"></a> |
| <span class="sourceLineNo">117</span> private volatile boolean disposing;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span><a name="line.118"></a> |
| <span class="sourceLineNo">119</span> private volatile boolean disposed;<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> private final DefaultIoFuture disposalFuture = new DefaultIoFuture(null);<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> protected AtomicBoolean wakeupCalled = new AtomicBoolean(false);<a name="line.123"></a> |
| <span class="sourceLineNo">124</span><a name="line.124"></a> |
| <span class="sourceLineNo">125</span> /**<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> * Create an {@link AbstractPollingIoProcessor} with the given<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> * {@link Executor} for handling I/Os events.<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> * <a name="line.128"></a> |
| <span class="sourceLineNo">129</span> * @param executor<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> * the {@link Executor} for handling I/O events<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> */<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> protected AbstractPollingIoProcessor(Executor executor) {<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> if (executor == null) {<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> throw new IllegalArgumentException("executor");<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> this.threadName = nextThreadName();<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> this.executor = executor;<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> /**<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> * Compute the thread ID for this class instance. As we may have different<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * classes, we store the last ID number into a Map associating the class<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * name to the last assigned ID.<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * <a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * @return a name for the current thread, based on the class name and an<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * incremental value, starting at 1.<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> */<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> private String nextThreadName() {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> Class<?> cls = getClass();<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> int newThreadId;<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> AtomicInteger threadId = threadIds.putIfAbsent(cls, new AtomicInteger(1));<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> if (threadId == null) {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> newThreadId = 1;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> } else {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> // Just increment the last ID, and get it.<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> newThreadId = threadId.incrementAndGet();<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<a name="line.160"></a> |
| <span class="sourceLineNo">161</span><a name="line.161"></a> |
| <span class="sourceLineNo">162</span> // Now we can compute the name for this thread<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> return cls.getSimpleName() + '-' + newThreadId;<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> /**<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * {@inheritDoc}<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> */<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> public final boolean isDisposing() {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> return disposing;<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> * {@inheritDoc}<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> */<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> public final boolean isDisposed() {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> return disposed;<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> }<a name="line.178"></a> |
| <span class="sourceLineNo">179</span><a name="line.179"></a> |
| <span class="sourceLineNo">180</span> /**<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * {@inheritDoc}<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> */<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> public final void dispose() {<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> if (disposed || disposing) {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> return;<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> }<a name="line.186"></a> |
| <span class="sourceLineNo">187</span><a name="line.187"></a> |
| <span class="sourceLineNo">188</span> synchronized (disposalLock) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> disposing = true;<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> startupProcessor();<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> disposalFuture.awaitUninterruptibly();<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> disposed = true;<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> /**<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * Dispose the resources used by this {@link IoProcessor} for polling the<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * client connections. The implementing class doDispose method will be<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * called.<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> * <a name="line.201"></a> |
| <span class="sourceLineNo">202</span> * @throws Exception<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> * if some low level IO error occurs<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> */<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> protected abstract void doDispose() throws Exception;<a name="line.205"></a> |
| <span class="sourceLineNo">206</span><a name="line.206"></a> |
| <span class="sourceLineNo">207</span> /**<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> * poll those sessions for the given timeout<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> * <a name="line.209"></a> |
| <span class="sourceLineNo">210</span> * @param timeout<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> * milliseconds before the call timeout if no event appear<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> * @return The number of session ready for read or for write<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> * @throws Exception<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> * if some low level IO error occurs<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> */<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> protected abstract int select(long timeout) throws Exception;<a name="line.216"></a> |
| <span class="sourceLineNo">217</span><a name="line.217"></a> |
| <span class="sourceLineNo">218</span> /**<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> * poll those sessions forever<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> * <a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * @return The number of session ready for read or for write<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> * @throws Exception<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> * if some low level IO error occurs<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> */<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> protected abstract int select() throws Exception;<a name="line.225"></a> |
| <span class="sourceLineNo">226</span><a name="line.226"></a> |
| <span class="sourceLineNo">227</span> /**<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> * Say if the list of {@link IoSession} polled by this {@link IoProcessor}<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> * is empty<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> * <a name="line.230"></a> |
| <span class="sourceLineNo">231</span> * @return true if at least a session is managed by this {@link IoProcessor}<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> */<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> protected abstract boolean isSelectorEmpty();<a name="line.233"></a> |
| <span class="sourceLineNo">234</span><a name="line.234"></a> |
| <span class="sourceLineNo">235</span> /**<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> * Interrupt the {@link #select(long)} call.<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> */<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> protected abstract void wakeup();<a name="line.238"></a> |
| <span class="sourceLineNo">239</span><a name="line.239"></a> |
| <span class="sourceLineNo">240</span> /**<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> * Get an {@link Iterator} for the list of {@link IoSession} polled by this<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> * {@link IoProcessor}<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> * <a name="line.243"></a> |
| <span class="sourceLineNo">244</span> * @return {@link Iterator} of {@link IoSession}<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> */<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> protected abstract Iterator<S> allSessions();<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> * Get an {@link Iterator} for the list of {@link IoSession} found selected<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> * by the last call of {@link #select(long)}<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * <a name="line.251"></a> |
| <span class="sourceLineNo">252</span> * @return {@link Iterator} of {@link IoSession} read for I/Os operation<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> */<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> protected abstract Iterator<S> selectedSessions();<a name="line.254"></a> |
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| <span class="sourceLineNo">256</span> /**<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * Get the state of a session (preparing, open, closed)<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * <a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * @param session<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> * the {@link IoSession} to inspect<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * @return the state of the session<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> */<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> protected abstract SessionState getState(S session);<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> * Is the session ready for writing<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> * <a name="line.267"></a> |
| <span class="sourceLineNo">268</span> * @param session<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> * the session queried<a name="line.269"></a> |
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| <span class="sourceLineNo">271</span> */<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> protected abstract boolean isWritable(S session);<a name="line.272"></a> |
| <span class="sourceLineNo">273</span><a name="line.273"></a> |
| <span class="sourceLineNo">274</span> /**<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> * Is the session ready for reading<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> * <a name="line.276"></a> |
| <span class="sourceLineNo">277</span> * @param session<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> * the session queried<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> * @return true is ready, false if not ready<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> */<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> protected abstract boolean isReadable(S session);<a name="line.281"></a> |
| <span class="sourceLineNo">282</span><a name="line.282"></a> |
| <span class="sourceLineNo">283</span> /**<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> * register a session for writing<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> * <a name="line.285"></a> |
| <span class="sourceLineNo">286</span> * @param session<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * the session registered<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> * @param isInterested<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * true for registering, false for removing<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> */<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> protected abstract void setInterestedInWrite(S session, boolean isInterested) throws Exception;<a name="line.291"></a> |
| <span class="sourceLineNo">292</span><a name="line.292"></a> |
| <span class="sourceLineNo">293</span> /**<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> * register a session for reading<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> * <a name="line.295"></a> |
| <span class="sourceLineNo">296</span> * @param session<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> * the session registered<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> * @param isInterested<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> * true for registering, false for removing<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> */<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> protected abstract void setInterestedInRead(S session, boolean isInterested) throws Exception;<a name="line.301"></a> |
| <span class="sourceLineNo">302</span><a name="line.302"></a> |
| <span class="sourceLineNo">303</span> /**<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> * is this session registered for reading<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> * <a name="line.305"></a> |
| <span class="sourceLineNo">306</span> * @param session<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> * the session queried<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> * @return true is registered for reading<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> */<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> protected abstract boolean isInterestedInRead(S session);<a name="line.310"></a> |
| <span class="sourceLineNo">311</span><a name="line.311"></a> |
| <span class="sourceLineNo">312</span> /**<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> * is this session registered for writing<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> * <a name="line.314"></a> |
| <span class="sourceLineNo">315</span> * @param session<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> * the session queried<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> * @return true is registered for writing<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> */<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> protected abstract boolean isInterestedInWrite(S session);<a name="line.319"></a> |
| <span class="sourceLineNo">320</span><a name="line.320"></a> |
| <span class="sourceLineNo">321</span> /**<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> * Initialize the polling of a session. Add it to the polling process.<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> * <a name="line.323"></a> |
| <span class="sourceLineNo">324</span> * @param session<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> * the {@link IoSession} to add to the polling<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> * @throws Exception<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> * any exception thrown by the underlying system calls<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> */<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> protected abstract void init(S session) throws Exception;<a name="line.329"></a> |
| <span class="sourceLineNo">330</span><a name="line.330"></a> |
| <span class="sourceLineNo">331</span> /**<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> * Destroy the underlying client socket handle<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> * <a name="line.333"></a> |
| <span class="sourceLineNo">334</span> * @param session<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> * the {@link IoSession}<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> * @throws Exception<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> * any exception thrown by the underlying system calls<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> */<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> protected abstract void destroy(S session) throws Exception;<a name="line.339"></a> |
| <span class="sourceLineNo">340</span><a name="line.340"></a> |
| <span class="sourceLineNo">341</span> /**<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> * Reads a sequence of bytes from a {@link IoSession} into the given<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> * {@link IoBuffer}. Is called when the session was found ready for reading.<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> * <a name="line.344"></a> |
| <span class="sourceLineNo">345</span> * @param session<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> * the session to read<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> * @param buf<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> * the buffer to fill<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> * @return the number of bytes read<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> * @throws Exception<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> * any exception thrown by the underlying system calls<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> */<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> protected abstract int read(S session, IoBuffer buf) throws Exception;<a name="line.353"></a> |
| <span class="sourceLineNo">354</span><a name="line.354"></a> |
| <span class="sourceLineNo">355</span> /**<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> * Write a sequence of bytes to a {@link IoSession}, means to be called when<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> * a session was found ready for writing.<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> * <a name="line.358"></a> |
| <span class="sourceLineNo">359</span> * @param session<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> * the session to write<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> * @param buf<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> * the buffer to write<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> * @param length<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> * the number of bytes to write can be superior to the number of<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> * bytes remaining in the buffer<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> * @return the number of byte written<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> * @throws Exception<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> * any exception thrown by the underlying system calls<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> */<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> protected abstract int write(S session, IoBuffer buf, int length) throws Exception;<a name="line.370"></a> |
| <span class="sourceLineNo">371</span><a name="line.371"></a> |
| <span class="sourceLineNo">372</span> /**<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> * Write a part of a file to a {@link IoSession}, if the underlying API<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> * isn't supporting system calls like sendfile(), you can throw a<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> * {@link UnsupportedOperationException} so the file will be send using<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> * usual {@link #write(AbstractIoSession, IoBuffer, int)} call.<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> * <a name="line.377"></a> |
| <span class="sourceLineNo">378</span> * @param session<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> * the session to write<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> * @param region<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> * the file region to write<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> * @param length<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> * the length of the portion to send<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> * @return the number of written bytes<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> * @throws Exception<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> * any exception thrown by the underlying system calls<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> */<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> protected abstract int transferFile(S session, FileRegion region, int length) throws Exception;<a name="line.388"></a> |
| <span class="sourceLineNo">389</span><a name="line.389"></a> |
| <span class="sourceLineNo">390</span> /**<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> * {@inheritDoc}<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> */<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> public final void add(S session) {<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> if (disposed || disposing) {<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> throw new IllegalStateException("Already disposed.");<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> }<a name="line.396"></a> |
| <span class="sourceLineNo">397</span><a name="line.397"></a> |
| <span class="sourceLineNo">398</span> // Adds the session to the newSession queue and starts the worker<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> newSessions.add(session);<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> startupProcessor();<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> }<a name="line.401"></a> |
| <span class="sourceLineNo">402</span><a name="line.402"></a> |
| <span class="sourceLineNo">403</span> /**<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> * {@inheritDoc}<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> */<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> public final void remove(S session) {<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> scheduleRemove(session);<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> startupProcessor();<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> }<a name="line.409"></a> |
| <span class="sourceLineNo">410</span><a name="line.410"></a> |
| <span class="sourceLineNo">411</span> private void scheduleRemove(S session) {<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> removingSessions.add(session);<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> /**<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> * {@inheritDoc}<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> */<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> public void write(S session, WriteRequest writeRequest) {<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> WriteRequestQueue writeRequestQueue = session.getWriteRequestQueue();<a name="line.419"></a> |
| <span class="sourceLineNo">420</span><a name="line.420"></a> |
| <span class="sourceLineNo">421</span> writeRequestQueue.offer(session, writeRequest);<a name="line.421"></a> |
| <span class="sourceLineNo">422</span><a name="line.422"></a> |
| <span class="sourceLineNo">423</span> if (!session.isWriteSuspended()) {<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> this.flush(session);<a name="line.424"></a> |
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| <span class="sourceLineNo">426</span> }<a name="line.426"></a> |
| <span class="sourceLineNo">427</span><a name="line.427"></a> |
| <span class="sourceLineNo">428</span> /**<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> * {@inheritDoc}<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> */<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> public final void flush(S session) {<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> // add the session to the queue if it's not already<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> // in the queue, then wake up the select()<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> if (session.setScheduledForFlush(true)) {<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> flushingSessions.add(session);<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> wakeup();<a name="line.436"></a> |
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| <span class="sourceLineNo">438</span> }<a name="line.438"></a> |
| <span class="sourceLineNo">439</span><a name="line.439"></a> |
| <span class="sourceLineNo">440</span> private void scheduleFlush(S session) {<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> // add the session to the queue if it's not already<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> // in the queue<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> if (session.setScheduledForFlush(true)) {<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> flushingSessions.add(session);<a name="line.444"></a> |
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| <span class="sourceLineNo">446</span> }<a name="line.446"></a> |
| <span class="sourceLineNo">447</span><a name="line.447"></a> |
| <span class="sourceLineNo">448</span> /**<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> * Updates the traffic mask for a given session<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> * <a name="line.450"></a> |
| <span class="sourceLineNo">451</span> * @param session<a name="line.451"></a> |
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| <span class="sourceLineNo">453</span> */<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> public final void updateTrafficMask(S session) {<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> trafficControllingSessions.add(session);<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> wakeup();<a name="line.456"></a> |
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| <span class="sourceLineNo">458</span><a name="line.458"></a> |
| <span class="sourceLineNo">459</span> /**<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> * Starts the inner Processor, asking the executor to pick a thread in its<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> * pool. The Runnable will be renamed<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> */<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> private void startupProcessor() {<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> Processor processor = processorRef.get();<a name="line.464"></a> |
| <span class="sourceLineNo">465</span><a name="line.465"></a> |
| <span class="sourceLineNo">466</span> if (processor == null) {<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> processor = new Processor();<a name="line.467"></a> |
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| <span class="sourceLineNo">469</span> if (processorRef.compareAndSet(null, processor)) {<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> executor.execute(new NamePreservingRunnable(processor, threadName));<a name="line.470"></a> |
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| <span class="sourceLineNo">472</span> }<a name="line.472"></a> |
| <span class="sourceLineNo">473</span><a name="line.473"></a> |
| <span class="sourceLineNo">474</span> // Just stop the select() and start it again, so that the processor<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> // can be activated immediately.<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> wakeup();<a name="line.476"></a> |
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| <span class="sourceLineNo">478</span><a name="line.478"></a> |
| <span class="sourceLineNo">479</span> /**<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> * In the case we are using the java select() method, this method is used to<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> * trash the buggy selector and create a new one, registring all the sockets<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> * on it.<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> * <a name="line.483"></a> |
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| <span class="sourceLineNo">485</span> * If we got an exception<a name="line.485"></a> |
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| <span class="sourceLineNo">489</span> /**<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> * Check that the select() has not exited immediately just because of a<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> * broken connection. In this case, this is a standard case, and we just<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> * have to loop.<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> * <a name="line.493"></a> |
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| <span class="sourceLineNo">502</span> * sessions which are effectively created<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> * <a name="line.503"></a> |
| <span class="sourceLineNo">504</span> * @return The number of new sessions<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> */<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> private int handleNewSessions() {<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> int addedSessions = 0;<a name="line.507"></a> |
| <span class="sourceLineNo">508</span><a name="line.508"></a> |
| <span class="sourceLineNo">509</span> for (S session = newSessions.poll(); session != null; session = newSessions.poll()) {<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> if (addNow(session)) {<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> // A new session has been created<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> addedSessions++;<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> }<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> }<a name="line.514"></a> |
| <span class="sourceLineNo">515</span><a name="line.515"></a> |
| <span class="sourceLineNo">516</span> return addedSessions;<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> }<a name="line.517"></a> |
| <span class="sourceLineNo">518</span><a name="line.518"></a> |
| <span class="sourceLineNo">519</span> /**<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> * Process a new session : - initialize it - create its chain - fire the<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> * CREATED listeners if any<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> * <a name="line.522"></a> |
| <span class="sourceLineNo">523</span> * @param session<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> * The session to create<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> * @return true if the session has been registered<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> */<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> private boolean addNow(S session) {<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> boolean registered = false;<a name="line.528"></a> |
| <span class="sourceLineNo">529</span><a name="line.529"></a> |
| <span class="sourceLineNo">530</span> try {<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> init(session);<a name="line.531"></a> |
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| <span class="sourceLineNo">533</span><a name="line.533"></a> |
| <span class="sourceLineNo">534</span> // Build the filter chain of this session.<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> IoFilterChainBuilder chainBuilder = session.getService().getFilterChainBuilder();<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> chainBuilder.buildFilterChain(session.getFilterChain());<a name="line.536"></a> |
| <span class="sourceLineNo">537</span><a name="line.537"></a> |
| <span class="sourceLineNo">538</span> // DefaultIoFilterChain.CONNECT_FUTURE is cleared inside here<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> // in AbstractIoFilterChain.fireSessionOpened().<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> // Propagate the SESSION_CREATED event up to the chain<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> IoServiceListenerSupport listeners = ((AbstractIoService) session.getService()).getListeners();<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> listeners.fireSessionCreated(session);<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> } catch (Exception e) {<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> ExceptionMonitor.getInstance().exceptionCaught(e);<a name="line.544"></a> |
| <span class="sourceLineNo">545</span><a name="line.545"></a> |
| <span class="sourceLineNo">546</span> try {<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> destroy(session);<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> } catch (Exception e1) {<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> ExceptionMonitor.getInstance().exceptionCaught(e1);<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> } finally {<a name="line.550"></a> |
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| <span class="sourceLineNo">552</span> }<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> }<a name="line.553"></a> |
| <span class="sourceLineNo">554</span><a name="line.554"></a> |
| <span class="sourceLineNo">555</span> return registered;<a name="line.555"></a> |
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| <span class="sourceLineNo">557</span><a name="line.557"></a> |
| <span class="sourceLineNo">558</span> private int removeSessions() {<a name="line.558"></a> |
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| <span class="sourceLineNo">560</span><a name="line.560"></a> |
| <span class="sourceLineNo">561</span> for (S session = removingSessions.poll(); session != null; session = removingSessions.poll()) {<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> SessionState state = getState(session);<a name="line.562"></a> |
| <span class="sourceLineNo">563</span><a name="line.563"></a> |
| <span class="sourceLineNo">564</span> // Now deal with the removal accordingly to the session's state<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> switch (state) {<a name="line.565"></a> |
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| <span class="sourceLineNo">571</span><a name="line.571"></a> |
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| <span class="sourceLineNo">573</span><a name="line.573"></a> |
| <span class="sourceLineNo">574</span> case CLOSING:<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> // Skip if channel is already closed<a name="line.575"></a> |
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| <span class="sourceLineNo">577</span><a name="line.577"></a> |
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| <span class="sourceLineNo">580</span> // remove it<a name="line.580"></a> |
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| <span class="sourceLineNo">582</span><a name="line.582"></a> |
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| <span class="sourceLineNo">584</span> removedSessions++;<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> }<a name="line.585"></a> |
| <span class="sourceLineNo">586</span><a name="line.586"></a> |
| <span class="sourceLineNo">587</span> break;<a name="line.587"></a> |
| <span class="sourceLineNo">588</span><a name="line.588"></a> |
| <span class="sourceLineNo">589</span> default:<a name="line.589"></a> |
| <span class="sourceLineNo">590</span> throw new IllegalStateException(String.valueOf(state));<a name="line.590"></a> |
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| <span class="sourceLineNo">592</span> }<a name="line.592"></a> |
| <span class="sourceLineNo">593</span><a name="line.593"></a> |
| <span class="sourceLineNo">594</span> return removedSessions;<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> }<a name="line.595"></a> |
| <span class="sourceLineNo">596</span><a name="line.596"></a> |
| <span class="sourceLineNo">597</span> private boolean removeNow(S session) {<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> clearWriteRequestQueue(session);<a name="line.598"></a> |
| <span class="sourceLineNo">599</span><a name="line.599"></a> |
| <span class="sourceLineNo">600</span> try {<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> destroy(session);<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> return true;<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> } catch (Exception e) {<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> filterChain.fireExceptionCaught(e);<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> } finally {<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> clearWriteRequestQueue(session);<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> ((AbstractIoService) session.getService()).getListeners().fireSessionDestroyed(session);<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> }<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> return false;<a name="line.610"></a> |
| <span class="sourceLineNo">611</span> }<a name="line.611"></a> |
| <span class="sourceLineNo">612</span><a name="line.612"></a> |
| <span class="sourceLineNo">613</span> private void clearWriteRequestQueue(S session) {<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> WriteRequestQueue writeRequestQueue = session.getWriteRequestQueue();<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> WriteRequest req;<a name="line.615"></a> |
| <span class="sourceLineNo">616</span><a name="line.616"></a> |
| <span class="sourceLineNo">617</span> List<WriteRequest> failedRequests = new ArrayList<WriteRequest>();<a name="line.617"></a> |
| <span class="sourceLineNo">618</span><a name="line.618"></a> |
| <span class="sourceLineNo">619</span> if ((req = writeRequestQueue.poll(session)) != null) {<a name="line.619"></a> |
| <span class="sourceLineNo">620</span> Object message = req.getMessage();<a name="line.620"></a> |
| <span class="sourceLineNo">621</span><a name="line.621"></a> |
| <span class="sourceLineNo">622</span> if (message instanceof IoBuffer) {<a name="line.622"></a> |
| <span class="sourceLineNo">623</span> IoBuffer buf = (IoBuffer) message;<a name="line.623"></a> |
| <span class="sourceLineNo">624</span><a name="line.624"></a> |
| <span class="sourceLineNo">625</span> // The first unwritten empty buffer must be<a name="line.625"></a> |
| <span class="sourceLineNo">626</span> // forwarded to the filter chain.<a name="line.626"></a> |
| <span class="sourceLineNo">627</span> if (buf.hasRemaining()) {<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> buf.reset();<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> failedRequests.add(req);<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> } else {<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> filterChain.fireMessageSent(req);<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> }<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> } else {<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> failedRequests.add(req);<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> }<a name="line.636"></a> |
| <span class="sourceLineNo">637</span><a name="line.637"></a> |
| <span class="sourceLineNo">638</span> // Discard others.<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> while ((req = writeRequestQueue.poll(session)) != null) {<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> failedRequests.add(req);<a name="line.640"></a> |
| <span class="sourceLineNo">641</span> }<a name="line.641"></a> |
| <span class="sourceLineNo">642</span> }<a name="line.642"></a> |
| <span class="sourceLineNo">643</span><a name="line.643"></a> |
| <span class="sourceLineNo">644</span> // Create an exception and notify.<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> if (!failedRequests.isEmpty()) {<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> WriteToClosedSessionException cause = new WriteToClosedSessionException(failedRequests);<a name="line.646"></a> |
| <span class="sourceLineNo">647</span><a name="line.647"></a> |
| <span class="sourceLineNo">648</span> for (WriteRequest r : failedRequests) {<a name="line.648"></a> |
| <span class="sourceLineNo">649</span> session.decreaseScheduledBytesAndMessages(r);<a name="line.649"></a> |
| <span class="sourceLineNo">650</span> r.getFuture().setException(cause);<a name="line.650"></a> |
| <span class="sourceLineNo">651</span> }<a name="line.651"></a> |
| <span class="sourceLineNo">652</span><a name="line.652"></a> |
| <span class="sourceLineNo">653</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.653"></a> |
| <span class="sourceLineNo">654</span> filterChain.fireExceptionCaught(cause);<a name="line.654"></a> |
| <span class="sourceLineNo">655</span> }<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> private void process() throws Exception {<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> for (Iterator<S> i = selectedSessions(); i.hasNext();) {<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> S session = i.next();<a name="line.660"></a> |
| <span class="sourceLineNo">661</span> process(session);<a name="line.661"></a> |
| <span class="sourceLineNo">662</span> i.remove();<a name="line.662"></a> |
| <span class="sourceLineNo">663</span> }<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> * Deal with session ready for the read or write operations, or both.<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> */<a name="line.668"></a> |
| <span class="sourceLineNo">669</span> private void process(S session) {<a name="line.669"></a> |
| <span class="sourceLineNo">670</span> // Process Reads<a name="line.670"></a> |
| <span class="sourceLineNo">671</span> if (isReadable(session) && !session.isReadSuspended()) {<a name="line.671"></a> |
| <span class="sourceLineNo">672</span> read(session);<a name="line.672"></a> |
| <span class="sourceLineNo">673</span> }<a name="line.673"></a> |
| <span class="sourceLineNo">674</span><a name="line.674"></a> |
| <span class="sourceLineNo">675</span> // Process writes<a name="line.675"></a> |
| <span class="sourceLineNo">676</span> if (isWritable(session) && !session.isWriteSuspended()) {<a name="line.676"></a> |
| <span class="sourceLineNo">677</span> // add the session to the queue, if it's not already there<a name="line.677"></a> |
| <span class="sourceLineNo">678</span> if (session.setScheduledForFlush(true)) {<a name="line.678"></a> |
| <span class="sourceLineNo">679</span> flushingSessions.add(session);<a name="line.679"></a> |
| <span class="sourceLineNo">680</span> }<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> }<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> }<a name="line.682"></a> |
| <span class="sourceLineNo">683</span><a name="line.683"></a> |
| <span class="sourceLineNo">684</span> private void read(S session) {<a name="line.684"></a> |
| <span class="sourceLineNo">685</span> IoSessionConfig config = session.getConfig();<a name="line.685"></a> |
| <span class="sourceLineNo">686</span> int bufferSize = config.getReadBufferSize();<a name="line.686"></a> |
| <span class="sourceLineNo">687</span> IoBuffer buf = IoBuffer.allocate(bufferSize);<a name="line.687"></a> |
| <span class="sourceLineNo">688</span><a name="line.688"></a> |
| <span class="sourceLineNo">689</span> final boolean hasFragmentation = session.getTransportMetadata().hasFragmentation();<a name="line.689"></a> |
| <span class="sourceLineNo">690</span><a name="line.690"></a> |
| <span class="sourceLineNo">691</span> try {<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> int readBytes = 0;<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> int ret;<a name="line.693"></a> |
| <span class="sourceLineNo">694</span><a name="line.694"></a> |
| <span class="sourceLineNo">695</span> try {<a name="line.695"></a> |
| <span class="sourceLineNo">696</span> if (hasFragmentation) {<a name="line.696"></a> |
| <span class="sourceLineNo">697</span><a name="line.697"></a> |
| <span class="sourceLineNo">698</span> while ((ret = read(session, buf)) > 0) {<a name="line.698"></a> |
| <span class="sourceLineNo">699</span> readBytes += ret;<a name="line.699"></a> |
| <span class="sourceLineNo">700</span><a name="line.700"></a> |
| <span class="sourceLineNo">701</span> if (!buf.hasRemaining()) {<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> break;<a name="line.702"></a> |
| <span class="sourceLineNo">703</span> }<a name="line.703"></a> |
| <span class="sourceLineNo">704</span> }<a name="line.704"></a> |
| <span class="sourceLineNo">705</span> } else {<a name="line.705"></a> |
| <span class="sourceLineNo">706</span> ret = read(session, buf);<a name="line.706"></a> |
| <span class="sourceLineNo">707</span><a name="line.707"></a> |
| <span class="sourceLineNo">708</span> if (ret > 0) {<a name="line.708"></a> |
| <span class="sourceLineNo">709</span> readBytes = ret;<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> } finally {<a name="line.712"></a> |
| <span class="sourceLineNo">713</span> buf.flip();<a name="line.713"></a> |
| <span class="sourceLineNo">714</span> }<a name="line.714"></a> |
| <span class="sourceLineNo">715</span><a name="line.715"></a> |
| <span class="sourceLineNo">716</span> if (readBytes > 0) {<a name="line.716"></a> |
| <span class="sourceLineNo">717</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.717"></a> |
| <span class="sourceLineNo">718</span> filterChain.fireMessageReceived(buf);<a name="line.718"></a> |
| <span class="sourceLineNo">719</span> buf = null;<a name="line.719"></a> |
| <span class="sourceLineNo">720</span><a name="line.720"></a> |
| <span class="sourceLineNo">721</span> if (hasFragmentation) {<a name="line.721"></a> |
| <span class="sourceLineNo">722</span> if (readBytes << 1 < config.getReadBufferSize()) {<a name="line.722"></a> |
| <span class="sourceLineNo">723</span> session.decreaseReadBufferSize();<a name="line.723"></a> |
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| <span class="sourceLineNo">725</span> session.increaseReadBufferSize();<a name="line.725"></a> |
| <span class="sourceLineNo">726</span> }<a name="line.726"></a> |
| <span class="sourceLineNo">727</span> }<a name="line.727"></a> |
| <span class="sourceLineNo">728</span> }<a name="line.728"></a> |
| <span class="sourceLineNo">729</span><a name="line.729"></a> |
| <span class="sourceLineNo">730</span> if (ret < 0) {<a name="line.730"></a> |
| <span class="sourceLineNo">731</span> // scheduleRemove(session);<a name="line.731"></a> |
| <span class="sourceLineNo">732</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.732"></a> |
| <span class="sourceLineNo">733</span> filterChain.fireInputClosed();<a name="line.733"></a> |
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| <span class="sourceLineNo">736</span> if (e instanceof IOException) {<a name="line.736"></a> |
| <span class="sourceLineNo">737</span> if (!(e instanceof PortUnreachableException)<a name="line.737"></a> |
| <span class="sourceLineNo">738</span> || !AbstractDatagramSessionConfig.class.isAssignableFrom(config.getClass())<a name="line.738"></a> |
| <span class="sourceLineNo">739</span> || ((AbstractDatagramSessionConfig) config).isCloseOnPortUnreachable()) {<a name="line.739"></a> |
| <span class="sourceLineNo">740</span> scheduleRemove(session);<a name="line.740"></a> |
| <span class="sourceLineNo">741</span> }<a name="line.741"></a> |
| <span class="sourceLineNo">742</span> }<a name="line.742"></a> |
| <span class="sourceLineNo">743</span><a name="line.743"></a> |
| <span class="sourceLineNo">744</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.744"></a> |
| <span class="sourceLineNo">745</span> filterChain.fireExceptionCaught(e);<a name="line.745"></a> |
| <span class="sourceLineNo">746</span> }<a name="line.746"></a> |
| <span class="sourceLineNo">747</span> }<a name="line.747"></a> |
| <span class="sourceLineNo">748</span><a name="line.748"></a> |
| <span class="sourceLineNo">749</span> private void notifyIdleSessions(long currentTime) throws Exception {<a name="line.749"></a> |
| <span class="sourceLineNo">750</span> // process idle sessions<a name="line.750"></a> |
| <span class="sourceLineNo">751</span> if (currentTime - lastIdleCheckTime >= SELECT_TIMEOUT) {<a name="line.751"></a> |
| <span class="sourceLineNo">752</span> lastIdleCheckTime = currentTime;<a name="line.752"></a> |
| <span class="sourceLineNo">753</span> AbstractIoSession.notifyIdleness(allSessions(), currentTime);<a name="line.753"></a> |
| <span class="sourceLineNo">754</span> }<a name="line.754"></a> |
| <span class="sourceLineNo">755</span> }<a name="line.755"></a> |
| <span class="sourceLineNo">756</span><a name="line.756"></a> |
| <span class="sourceLineNo">757</span> /**<a name="line.757"></a> |
| <span class="sourceLineNo">758</span> * Write all the pending messages<a name="line.758"></a> |
| <span class="sourceLineNo">759</span> */<a name="line.759"></a> |
| <span class="sourceLineNo">760</span> private void flush(long currentTime) {<a name="line.760"></a> |
| <span class="sourceLineNo">761</span> if (flushingSessions.isEmpty()) {<a name="line.761"></a> |
| <span class="sourceLineNo">762</span> return;<a name="line.762"></a> |
| <span class="sourceLineNo">763</span> }<a name="line.763"></a> |
| <span class="sourceLineNo">764</span><a name="line.764"></a> |
| <span class="sourceLineNo">765</span> do {<a name="line.765"></a> |
| <span class="sourceLineNo">766</span> S session = flushingSessions.poll(); // the same one with<a name="line.766"></a> |
| <span class="sourceLineNo">767</span> // firstSession<a name="line.767"></a> |
| <span class="sourceLineNo">768</span><a name="line.768"></a> |
| <span class="sourceLineNo">769</span> if (session == null) {<a name="line.769"></a> |
| <span class="sourceLineNo">770</span> // Just in case ... It should not happen.<a name="line.770"></a> |
| <span class="sourceLineNo">771</span> break;<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> }<a name="line.772"></a> |
| <span class="sourceLineNo">773</span><a name="line.773"></a> |
| <span class="sourceLineNo">774</span> // Reset the Schedule for flush flag for this session,<a name="line.774"></a> |
| <span class="sourceLineNo">775</span> // as we are flushing it now<a name="line.775"></a> |
| <span class="sourceLineNo">776</span> session.unscheduledForFlush();<a name="line.776"></a> |
| <span class="sourceLineNo">777</span><a name="line.777"></a> |
| <span class="sourceLineNo">778</span> SessionState state = getState(session);<a name="line.778"></a> |
| <span class="sourceLineNo">779</span><a name="line.779"></a> |
| <span class="sourceLineNo">780</span> switch (state) {<a name="line.780"></a> |
| <span class="sourceLineNo">781</span> case OPENED:<a name="line.781"></a> |
| <span class="sourceLineNo">782</span> try {<a name="line.782"></a> |
| <span class="sourceLineNo">783</span> boolean flushedAll = flushNow(session, currentTime);<a name="line.783"></a> |
| <span class="sourceLineNo">784</span><a name="line.784"></a> |
| <span class="sourceLineNo">785</span> if (flushedAll && !session.getWriteRequestQueue().isEmpty(session)<a name="line.785"></a> |
| <span class="sourceLineNo">786</span> && !session.isScheduledForFlush()) {<a name="line.786"></a> |
| <span class="sourceLineNo">787</span> scheduleFlush(session);<a name="line.787"></a> |
| <span class="sourceLineNo">788</span> }<a name="line.788"></a> |
| <span class="sourceLineNo">789</span> } catch (Exception e) {<a name="line.789"></a> |
| <span class="sourceLineNo">790</span> scheduleRemove(session);<a name="line.790"></a> |
| <span class="sourceLineNo">791</span> session.close(true);<a name="line.791"></a> |
| <span class="sourceLineNo">792</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.792"></a> |
| <span class="sourceLineNo">793</span> filterChain.fireExceptionCaught(e);<a name="line.793"></a> |
| <span class="sourceLineNo">794</span> }<a name="line.794"></a> |
| <span class="sourceLineNo">795</span><a name="line.795"></a> |
| <span class="sourceLineNo">796</span> break;<a name="line.796"></a> |
| <span class="sourceLineNo">797</span><a name="line.797"></a> |
| <span class="sourceLineNo">798</span> case CLOSING:<a name="line.798"></a> |
| <span class="sourceLineNo">799</span> // Skip if the channel is already closed.<a name="line.799"></a> |
| <span class="sourceLineNo">800</span> break;<a name="line.800"></a> |
| <span class="sourceLineNo">801</span><a name="line.801"></a> |
| <span class="sourceLineNo">802</span> case OPENING:<a name="line.802"></a> |
| <span class="sourceLineNo">803</span> // Retry later if session is not yet fully initialized.<a name="line.803"></a> |
| <span class="sourceLineNo">804</span> // (In case that Session.write() is called before addSession()<a name="line.804"></a> |
| <span class="sourceLineNo">805</span> // is processed)<a name="line.805"></a> |
| <span class="sourceLineNo">806</span> scheduleFlush(session);<a name="line.806"></a> |
| <span class="sourceLineNo">807</span> return;<a name="line.807"></a> |
| <span class="sourceLineNo">808</span><a name="line.808"></a> |
| <span class="sourceLineNo">809</span> default:<a name="line.809"></a> |
| <span class="sourceLineNo">810</span> throw new IllegalStateException(String.valueOf(state));<a name="line.810"></a> |
| <span class="sourceLineNo">811</span> }<a name="line.811"></a> |
| <span class="sourceLineNo">812</span><a name="line.812"></a> |
| <span class="sourceLineNo">813</span> } while (!flushingSessions.isEmpty());<a name="line.813"></a> |
| <span class="sourceLineNo">814</span> }<a name="line.814"></a> |
| <span class="sourceLineNo">815</span><a name="line.815"></a> |
| <span class="sourceLineNo">816</span> private boolean flushNow(S session, long currentTime) {<a name="line.816"></a> |
| <span class="sourceLineNo">817</span> if (!session.isConnected()) {<a name="line.817"></a> |
| <span class="sourceLineNo">818</span> scheduleRemove(session);<a name="line.818"></a> |
| <span class="sourceLineNo">819</span> return false;<a name="line.819"></a> |
| <span class="sourceLineNo">820</span> }<a name="line.820"></a> |
| <span class="sourceLineNo">821</span><a name="line.821"></a> |
| <span class="sourceLineNo">822</span> final boolean hasFragmentation = session.getTransportMetadata().hasFragmentation();<a name="line.822"></a> |
| <span class="sourceLineNo">823</span><a name="line.823"></a> |
| <span class="sourceLineNo">824</span> final WriteRequestQueue writeRequestQueue = session.getWriteRequestQueue();<a name="line.824"></a> |
| <span class="sourceLineNo">825</span><a name="line.825"></a> |
| <span class="sourceLineNo">826</span> // Set limitation for the number of written bytes for read-write<a name="line.826"></a> |
| <span class="sourceLineNo">827</span> // fairness. I used maxReadBufferSize * 3 / 2, which yields best<a name="line.827"></a> |
| <span class="sourceLineNo">828</span> // performance in my experience while not breaking fairness much.<a name="line.828"></a> |
| <span class="sourceLineNo">829</span> final int maxWrittenBytes = session.getConfig().getMaxReadBufferSize()<a name="line.829"></a> |
| <span class="sourceLineNo">830</span> + (session.getConfig().getMaxReadBufferSize() >>> 1);<a name="line.830"></a> |
| <span class="sourceLineNo">831</span> int writtenBytes = 0;<a name="line.831"></a> |
| <span class="sourceLineNo">832</span> WriteRequest req = null;<a name="line.832"></a> |
| <span class="sourceLineNo">833</span><a name="line.833"></a> |
| <span class="sourceLineNo">834</span> try {<a name="line.834"></a> |
| <span class="sourceLineNo">835</span> // Clear OP_WRITE<a name="line.835"></a> |
| <span class="sourceLineNo">836</span> setInterestedInWrite(session, false);<a name="line.836"></a> |
| <span class="sourceLineNo">837</span><a name="line.837"></a> |
| <span class="sourceLineNo">838</span> do {<a name="line.838"></a> |
| <span class="sourceLineNo">839</span> // Check for pending writes.<a name="line.839"></a> |
| <span class="sourceLineNo">840</span> req = session.getCurrentWriteRequest();<a name="line.840"></a> |
| <span class="sourceLineNo">841</span><a name="line.841"></a> |
| <span class="sourceLineNo">842</span> if (req == null) {<a name="line.842"></a> |
| <span class="sourceLineNo">843</span> req = writeRequestQueue.poll(session);<a name="line.843"></a> |
| <span class="sourceLineNo">844</span><a name="line.844"></a> |
| <span class="sourceLineNo">845</span> if (req == null) {<a name="line.845"></a> |
| <span class="sourceLineNo">846</span> break;<a name="line.846"></a> |
| <span class="sourceLineNo">847</span> }<a name="line.847"></a> |
| <span class="sourceLineNo">848</span><a name="line.848"></a> |
| <span class="sourceLineNo">849</span> session.setCurrentWriteRequest(req);<a name="line.849"></a> |
| <span class="sourceLineNo">850</span> }<a name="line.850"></a> |
| <span class="sourceLineNo">851</span><a name="line.851"></a> |
| <span class="sourceLineNo">852</span> int localWrittenBytes = 0;<a name="line.852"></a> |
| <span class="sourceLineNo">853</span> Object message = req.getMessage();<a name="line.853"></a> |
| <span class="sourceLineNo">854</span><a name="line.854"></a> |
| <span class="sourceLineNo">855</span> if (message instanceof IoBuffer) {<a name="line.855"></a> |
| <span class="sourceLineNo">856</span> localWrittenBytes = writeBuffer(session, req, hasFragmentation, maxWrittenBytes - writtenBytes,<a name="line.856"></a> |
| <span class="sourceLineNo">857</span> currentTime);<a name="line.857"></a> |
| <span class="sourceLineNo">858</span><a name="line.858"></a> |
| <span class="sourceLineNo">859</span> if ((localWrittenBytes > 0) && ((IoBuffer) message).hasRemaining()) {<a name="line.859"></a> |
| <span class="sourceLineNo">860</span> // the buffer isn't empty, we re-interest it in writing<a name="line.860"></a> |
| <span class="sourceLineNo">861</span> writtenBytes += localWrittenBytes;<a name="line.861"></a> |
| <span class="sourceLineNo">862</span> setInterestedInWrite(session, true);<a name="line.862"></a> |
| <span class="sourceLineNo">863</span> return false;<a name="line.863"></a> |
| <span class="sourceLineNo">864</span> }<a name="line.864"></a> |
| <span class="sourceLineNo">865</span> } else if (message instanceof FileRegion) {<a name="line.865"></a> |
| <span class="sourceLineNo">866</span> localWrittenBytes = writeFile(session, req, hasFragmentation, maxWrittenBytes - writtenBytes,<a name="line.866"></a> |
| <span class="sourceLineNo">867</span> currentTime);<a name="line.867"></a> |
| <span class="sourceLineNo">868</span><a name="line.868"></a> |
| <span class="sourceLineNo">869</span> // Fix for Java bug on Linux<a name="line.869"></a> |
| <span class="sourceLineNo">870</span> // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5103988<a name="line.870"></a> |
| <span class="sourceLineNo">871</span> // If there's still data to be written in the FileRegion,<a name="line.871"></a> |
| <span class="sourceLineNo">872</span> // return 0 indicating that we need<a name="line.872"></a> |
| <span class="sourceLineNo">873</span> // to pause until writing may resume.<a name="line.873"></a> |
| <span class="sourceLineNo">874</span> if ((localWrittenBytes > 0) && (((FileRegion) message).getRemainingBytes() > 0)) {<a name="line.874"></a> |
| <span class="sourceLineNo">875</span> writtenBytes += localWrittenBytes;<a name="line.875"></a> |
| <span class="sourceLineNo">876</span> setInterestedInWrite(session, true);<a name="line.876"></a> |
| <span class="sourceLineNo">877</span> return false;<a name="line.877"></a> |
| <span class="sourceLineNo">878</span> }<a name="line.878"></a> |
| <span class="sourceLineNo">879</span> } else {<a name="line.879"></a> |
| <span class="sourceLineNo">880</span> throw new IllegalStateException("Don't know how to handle message of type '"<a name="line.880"></a> |
| <span class="sourceLineNo">881</span> + message.getClass().getName() + "'. Are you missing a protocol encoder?");<a name="line.881"></a> |
| <span class="sourceLineNo">882</span> }<a name="line.882"></a> |
| <span class="sourceLineNo">883</span><a name="line.883"></a> |
| <span class="sourceLineNo">884</span> if (localWrittenBytes == 0) {<a name="line.884"></a> |
| <span class="sourceLineNo">885</span> // Kernel buffer is full.<a name="line.885"></a> |
| <span class="sourceLineNo">886</span> setInterestedInWrite(session, true);<a name="line.886"></a> |
| <span class="sourceLineNo">887</span> return false;<a name="line.887"></a> |
| <span class="sourceLineNo">888</span> }<a name="line.888"></a> |
| <span class="sourceLineNo">889</span><a name="line.889"></a> |
| <span class="sourceLineNo">890</span> writtenBytes += localWrittenBytes;<a name="line.890"></a> |
| <span class="sourceLineNo">891</span><a name="line.891"></a> |
| <span class="sourceLineNo">892</span> if (writtenBytes >= maxWrittenBytes) {<a name="line.892"></a> |
| <span class="sourceLineNo">893</span> // Wrote too much<a name="line.893"></a> |
| <span class="sourceLineNo">894</span> scheduleFlush(session);<a name="line.894"></a> |
| <span class="sourceLineNo">895</span> return false;<a name="line.895"></a> |
| <span class="sourceLineNo">896</span> }<a name="line.896"></a> |
| <span class="sourceLineNo">897</span><a name="line.897"></a> |
| <span class="sourceLineNo">898</span> if (message instanceof IoBuffer) {<a name="line.898"></a> |
| <span class="sourceLineNo">899</span> ((IoBuffer) message).free();<a name="line.899"></a> |
| <span class="sourceLineNo">900</span> }<a name="line.900"></a> |
| <span class="sourceLineNo">901</span> } while (writtenBytes < maxWrittenBytes);<a name="line.901"></a> |
| <span class="sourceLineNo">902</span> } catch (Exception e) {<a name="line.902"></a> |
| <span class="sourceLineNo">903</span> if (req != null) {<a name="line.903"></a> |
| <span class="sourceLineNo">904</span> req.getFuture().setException(e);<a name="line.904"></a> |
| <span class="sourceLineNo">905</span> }<a name="line.905"></a> |
| <span class="sourceLineNo">906</span><a name="line.906"></a> |
| <span class="sourceLineNo">907</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.907"></a> |
| <span class="sourceLineNo">908</span> filterChain.fireExceptionCaught(e);<a name="line.908"></a> |
| <span class="sourceLineNo">909</span> return false;<a name="line.909"></a> |
| <span class="sourceLineNo">910</span> }<a name="line.910"></a> |
| <span class="sourceLineNo">911</span><a name="line.911"></a> |
| <span class="sourceLineNo">912</span> return true;<a name="line.912"></a> |
| <span class="sourceLineNo">913</span> }<a name="line.913"></a> |
| <span class="sourceLineNo">914</span><a name="line.914"></a> |
| <span class="sourceLineNo">915</span> private int writeBuffer(S session, WriteRequest req, boolean hasFragmentation, int maxLength, long currentTime)<a name="line.915"></a> |
| <span class="sourceLineNo">916</span> throws Exception {<a name="line.916"></a> |
| <span class="sourceLineNo">917</span> IoBuffer buf = (IoBuffer) req.getMessage();<a name="line.917"></a> |
| <span class="sourceLineNo">918</span> int localWrittenBytes = 0;<a name="line.918"></a> |
| <span class="sourceLineNo">919</span><a name="line.919"></a> |
| <span class="sourceLineNo">920</span> if (buf.hasRemaining()) {<a name="line.920"></a> |
| <span class="sourceLineNo">921</span> int length;<a name="line.921"></a> |
| <span class="sourceLineNo">922</span><a name="line.922"></a> |
| <span class="sourceLineNo">923</span> if (hasFragmentation) {<a name="line.923"></a> |
| <span class="sourceLineNo">924</span> length = Math.min(buf.remaining(), maxLength);<a name="line.924"></a> |
| <span class="sourceLineNo">925</span> } else {<a name="line.925"></a> |
| <span class="sourceLineNo">926</span> length = buf.remaining();<a name="line.926"></a> |
| <span class="sourceLineNo">927</span> }<a name="line.927"></a> |
| <span class="sourceLineNo">928</span><a name="line.928"></a> |
| <span class="sourceLineNo">929</span> try {<a name="line.929"></a> |
| <span class="sourceLineNo">930</span> localWrittenBytes = write(session, buf, length);<a name="line.930"></a> |
| <span class="sourceLineNo">931</span> } catch (IOException ioe) {<a name="line.931"></a> |
| <span class="sourceLineNo">932</span> // We have had an issue while trying to send data to the<a name="line.932"></a> |
| <span class="sourceLineNo">933</span> // peer : let's close the session.<a name="line.933"></a> |
| <span class="sourceLineNo">934</span> buf.free();<a name="line.934"></a> |
| <span class="sourceLineNo">935</span> session.close(true);<a name="line.935"></a> |
| <span class="sourceLineNo">936</span> destroy(session);<a name="line.936"></a> |
| <span class="sourceLineNo">937</span><a name="line.937"></a> |
| <span class="sourceLineNo">938</span> return 0;<a name="line.938"></a> |
| <span class="sourceLineNo">939</span> }<a name="line.939"></a> |
| <span class="sourceLineNo">940</span><a name="line.940"></a> |
| <span class="sourceLineNo">941</span> }<a name="line.941"></a> |
| <span class="sourceLineNo">942</span><a name="line.942"></a> |
| <span class="sourceLineNo">943</span> session.increaseWrittenBytes(localWrittenBytes, currentTime);<a name="line.943"></a> |
| <span class="sourceLineNo">944</span><a name="line.944"></a> |
| <span class="sourceLineNo">945</span> if (!buf.hasRemaining() || (!hasFragmentation && (localWrittenBytes != 0))) {<a name="line.945"></a> |
| <span class="sourceLineNo">946</span> // Buffer has been sent, clear the current request.<a name="line.946"></a> |
| <span class="sourceLineNo">947</span> int pos = buf.position();<a name="line.947"></a> |
| <span class="sourceLineNo">948</span> buf.reset();<a name="line.948"></a> |
| <span class="sourceLineNo">949</span><a name="line.949"></a> |
| <span class="sourceLineNo">950</span> fireMessageSent(session, req);<a name="line.950"></a> |
| <span class="sourceLineNo">951</span><a name="line.951"></a> |
| <span class="sourceLineNo">952</span> // And set it back to its position<a name="line.952"></a> |
| <span class="sourceLineNo">953</span> buf.position(pos);<a name="line.953"></a> |
| <span class="sourceLineNo">954</span> }<a name="line.954"></a> |
| <span class="sourceLineNo">955</span><a name="line.955"></a> |
| <span class="sourceLineNo">956</span> return localWrittenBytes;<a name="line.956"></a> |
| <span class="sourceLineNo">957</span> }<a name="line.957"></a> |
| <span class="sourceLineNo">958</span><a name="line.958"></a> |
| <span class="sourceLineNo">959</span> private int writeFile(S session, WriteRequest req, boolean hasFragmentation, int maxLength, long currentTime)<a name="line.959"></a> |
| <span class="sourceLineNo">960</span> throws Exception {<a name="line.960"></a> |
| <span class="sourceLineNo">961</span> int localWrittenBytes;<a name="line.961"></a> |
| <span class="sourceLineNo">962</span> FileRegion region = (FileRegion) req.getMessage();<a name="line.962"></a> |
| <span class="sourceLineNo">963</span><a name="line.963"></a> |
| <span class="sourceLineNo">964</span> if (region.getRemainingBytes() > 0) {<a name="line.964"></a> |
| <span class="sourceLineNo">965</span> int length;<a name="line.965"></a> |
| <span class="sourceLineNo">966</span><a name="line.966"></a> |
| <span class="sourceLineNo">967</span> if (hasFragmentation) {<a name="line.967"></a> |
| <span class="sourceLineNo">968</span> length = (int) Math.min(region.getRemainingBytes(), maxLength);<a name="line.968"></a> |
| <span class="sourceLineNo">969</span> } else {<a name="line.969"></a> |
| <span class="sourceLineNo">970</span> length = (int) Math.min(Integer.MAX_VALUE, region.getRemainingBytes());<a name="line.970"></a> |
| <span class="sourceLineNo">971</span> }<a name="line.971"></a> |
| <span class="sourceLineNo">972</span><a name="line.972"></a> |
| <span class="sourceLineNo">973</span> localWrittenBytes = transferFile(session, region, length);<a name="line.973"></a> |
| <span class="sourceLineNo">974</span> region.update(localWrittenBytes);<a name="line.974"></a> |
| <span class="sourceLineNo">975</span> } else {<a name="line.975"></a> |
| <span class="sourceLineNo">976</span> localWrittenBytes = 0;<a name="line.976"></a> |
| <span class="sourceLineNo">977</span> }<a name="line.977"></a> |
| <span class="sourceLineNo">978</span><a name="line.978"></a> |
| <span class="sourceLineNo">979</span> session.increaseWrittenBytes(localWrittenBytes, currentTime);<a name="line.979"></a> |
| <span class="sourceLineNo">980</span><a name="line.980"></a> |
| <span class="sourceLineNo">981</span> if ((region.getRemainingBytes() <= 0) || (!hasFragmentation && (localWrittenBytes != 0))) {<a name="line.981"></a> |
| <span class="sourceLineNo">982</span> fireMessageSent(session, req);<a name="line.982"></a> |
| <span class="sourceLineNo">983</span> }<a name="line.983"></a> |
| <span class="sourceLineNo">984</span><a name="line.984"></a> |
| <span class="sourceLineNo">985</span> return localWrittenBytes;<a name="line.985"></a> |
| <span class="sourceLineNo">986</span> }<a name="line.986"></a> |
| <span class="sourceLineNo">987</span><a name="line.987"></a> |
| <span class="sourceLineNo">988</span> private void fireMessageSent(S session, WriteRequest req) {<a name="line.988"></a> |
| <span class="sourceLineNo">989</span> session.setCurrentWriteRequest(null);<a name="line.989"></a> |
| <span class="sourceLineNo">990</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.990"></a> |
| <span class="sourceLineNo">991</span> filterChain.fireMessageSent(req);<a name="line.991"></a> |
| <span class="sourceLineNo">992</span> }<a name="line.992"></a> |
| <span class="sourceLineNo">993</span><a name="line.993"></a> |
| <span class="sourceLineNo">994</span> /**<a name="line.994"></a> |
| <span class="sourceLineNo">995</span> * Update the trafficControl for all the session.<a name="line.995"></a> |
| <span class="sourceLineNo">996</span> */<a name="line.996"></a> |
| <span class="sourceLineNo">997</span> private void updateTrafficMask() {<a name="line.997"></a> |
| <span class="sourceLineNo">998</span> int queueSize = trafficControllingSessions.size();<a name="line.998"></a> |
| <span class="sourceLineNo">999</span><a name="line.999"></a> |
| <span class="sourceLineNo">1000</span> while (queueSize > 0) {<a name="line.1000"></a> |
| <span class="sourceLineNo">1001</span> S session = trafficControllingSessions.poll();<a name="line.1001"></a> |
| <span class="sourceLineNo">1002</span><a name="line.1002"></a> |
| <span class="sourceLineNo">1003</span> if (session == null) {<a name="line.1003"></a> |
| <span class="sourceLineNo">1004</span> // We are done with this queue.<a name="line.1004"></a> |
| <span class="sourceLineNo">1005</span> return;<a name="line.1005"></a> |
| <span class="sourceLineNo">1006</span> }<a name="line.1006"></a> |
| <span class="sourceLineNo">1007</span><a name="line.1007"></a> |
| <span class="sourceLineNo">1008</span> SessionState state = getState(session);<a name="line.1008"></a> |
| <span class="sourceLineNo">1009</span><a name="line.1009"></a> |
| <span class="sourceLineNo">1010</span> switch (state) {<a name="line.1010"></a> |
| <span class="sourceLineNo">1011</span> case OPENED:<a name="line.1011"></a> |
| <span class="sourceLineNo">1012</span> updateTrafficControl(session);<a name="line.1012"></a> |
| <span class="sourceLineNo">1013</span><a name="line.1013"></a> |
| <span class="sourceLineNo">1014</span> break;<a name="line.1014"></a> |
| <span class="sourceLineNo">1015</span><a name="line.1015"></a> |
| <span class="sourceLineNo">1016</span> case CLOSING:<a name="line.1016"></a> |
| <span class="sourceLineNo">1017</span> break;<a name="line.1017"></a> |
| <span class="sourceLineNo">1018</span><a name="line.1018"></a> |
| <span class="sourceLineNo">1019</span> case OPENING:<a name="line.1019"></a> |
| <span class="sourceLineNo">1020</span> // Retry later if session is not yet fully initialized.<a name="line.1020"></a> |
| <span class="sourceLineNo">1021</span> // (In case that Session.suspend??() or session.resume??() is<a name="line.1021"></a> |
| <span class="sourceLineNo">1022</span> // called before addSession() is processed)<a name="line.1022"></a> |
| <span class="sourceLineNo">1023</span> // We just put back the session at the end of the queue.<a name="line.1023"></a> |
| <span class="sourceLineNo">1024</span> trafficControllingSessions.add(session);<a name="line.1024"></a> |
| <span class="sourceLineNo">1025</span> break;<a name="line.1025"></a> |
| <span class="sourceLineNo">1026</span><a name="line.1026"></a> |
| <span class="sourceLineNo">1027</span> default:<a name="line.1027"></a> |
| <span class="sourceLineNo">1028</span> throw new IllegalStateException(String.valueOf(state));<a name="line.1028"></a> |
| <span class="sourceLineNo">1029</span> }<a name="line.1029"></a> |
| <span class="sourceLineNo">1030</span><a name="line.1030"></a> |
| <span class="sourceLineNo">1031</span> // As we have handled one session, decrement the number of<a name="line.1031"></a> |
| <span class="sourceLineNo">1032</span> // remaining sessions. The OPENING session will be processed<a name="line.1032"></a> |
| <span class="sourceLineNo">1033</span> // with the next select(), as the queue size has been decreased,<a name="line.1033"></a> |
| <span class="sourceLineNo">1034</span> // even<a name="line.1034"></a> |
| <span class="sourceLineNo">1035</span> // if the session has been pushed at the end of the queue<a name="line.1035"></a> |
| <span class="sourceLineNo">1036</span> queueSize--;<a name="line.1036"></a> |
| <span class="sourceLineNo">1037</span> }<a name="line.1037"></a> |
| <span class="sourceLineNo">1038</span> }<a name="line.1038"></a> |
| <span class="sourceLineNo">1039</span><a name="line.1039"></a> |
| <span class="sourceLineNo">1040</span> /**<a name="line.1040"></a> |
| <span class="sourceLineNo">1041</span> * {@inheritDoc}<a name="line.1041"></a> |
| <span class="sourceLineNo">1042</span> */<a name="line.1042"></a> |
| <span class="sourceLineNo">1043</span> public void updateTrafficControl(S session) {<a name="line.1043"></a> |
| <span class="sourceLineNo">1044</span> //<a name="line.1044"></a> |
| <span class="sourceLineNo">1045</span> try {<a name="line.1045"></a> |
| <span class="sourceLineNo">1046</span> setInterestedInRead(session, !session.isReadSuspended());<a name="line.1046"></a> |
| <span class="sourceLineNo">1047</span> } catch (Exception e) {<a name="line.1047"></a> |
| <span class="sourceLineNo">1048</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.1048"></a> |
| <span class="sourceLineNo">1049</span> filterChain.fireExceptionCaught(e);<a name="line.1049"></a> |
| <span class="sourceLineNo">1050</span> }<a name="line.1050"></a> |
| <span class="sourceLineNo">1051</span><a name="line.1051"></a> |
| <span class="sourceLineNo">1052</span> try {<a name="line.1052"></a> |
| <span class="sourceLineNo">1053</span> setInterestedInWrite(session,<a name="line.1053"></a> |
| <span class="sourceLineNo">1054</span> !session.getWriteRequestQueue().isEmpty(session) && !session.isWriteSuspended());<a name="line.1054"></a> |
| <span class="sourceLineNo">1055</span> } catch (Exception e) {<a name="line.1055"></a> |
| <span class="sourceLineNo">1056</span> IoFilterChain filterChain = session.getFilterChain();<a name="line.1056"></a> |
| <span class="sourceLineNo">1057</span> filterChain.fireExceptionCaught(e);<a name="line.1057"></a> |
| <span class="sourceLineNo">1058</span> }<a name="line.1058"></a> |
| <span class="sourceLineNo">1059</span> }<a name="line.1059"></a> |
| <span class="sourceLineNo">1060</span><a name="line.1060"></a> |
| <span class="sourceLineNo">1061</span> /**<a name="line.1061"></a> |
| <span class="sourceLineNo">1062</span> * The main loop. This is the place in charge to poll the Selector, and to<a name="line.1062"></a> |
| <span class="sourceLineNo">1063</span> * process the active sessions. It's done in - handle the newly created<a name="line.1063"></a> |
| <span class="sourceLineNo">1064</span> * sessions -<a name="line.1064"></a> |
| <span class="sourceLineNo">1065</span> */<a name="line.1065"></a> |
| <span class="sourceLineNo">1066</span> private class Processor implements Runnable {<a name="line.1066"></a> |
| <span class="sourceLineNo">1067</span> public void run() {<a name="line.1067"></a> |
| <span class="sourceLineNo">1068</span> assert (processorRef.get() == this);<a name="line.1068"></a> |
| <span class="sourceLineNo">1069</span><a name="line.1069"></a> |
| <span class="sourceLineNo">1070</span> int nSessions = 0;<a name="line.1070"></a> |
| <span class="sourceLineNo">1071</span> lastIdleCheckTime = System.currentTimeMillis();<a name="line.1071"></a> |
| <span class="sourceLineNo">1072</span><a name="line.1072"></a> |
| <span class="sourceLineNo">1073</span> for (;;) {<a name="line.1073"></a> |
| <span class="sourceLineNo">1074</span> try {<a name="line.1074"></a> |
| <span class="sourceLineNo">1075</span> // This select has a timeout so that we can manage<a name="line.1075"></a> |
| <span class="sourceLineNo">1076</span> // idle session when we get out of the select every<a name="line.1076"></a> |
| <span class="sourceLineNo">1077</span> // second. (note : this is a hack to avoid creating<a name="line.1077"></a> |
| <span class="sourceLineNo">1078</span> // a dedicated thread).<a name="line.1078"></a> |
| <span class="sourceLineNo">1079</span> long t0 = System.currentTimeMillis();<a name="line.1079"></a> |
| <span class="sourceLineNo">1080</span> int selected = select(SELECT_TIMEOUT);<a name="line.1080"></a> |
| <span class="sourceLineNo">1081</span> long t1 = System.currentTimeMillis();<a name="line.1081"></a> |
| <span class="sourceLineNo">1082</span> long delta = (t1 - t0);<a name="line.1082"></a> |
| <span class="sourceLineNo">1083</span><a name="line.1083"></a> |
| <span class="sourceLineNo">1084</span> if ((selected == 0) && !wakeupCalled.get() && (delta < 100)) {<a name="line.1084"></a> |
| <span class="sourceLineNo">1085</span> // Last chance : the select() may have been<a name="line.1085"></a> |
| <span class="sourceLineNo">1086</span> // interrupted because we have had an closed channel.<a name="line.1086"></a> |
| <span class="sourceLineNo">1087</span> if (isBrokenConnection()) {<a name="line.1087"></a> |
| <span class="sourceLineNo">1088</span> LOG.warn("Broken connection");<a name="line.1088"></a> |
| <span class="sourceLineNo">1089</span><a name="line.1089"></a> |
| <span class="sourceLineNo">1090</span> // we can reselect immediately<a name="line.1090"></a> |
| <span class="sourceLineNo">1091</span> // set back the flag to false<a name="line.1091"></a> |
| <span class="sourceLineNo">1092</span> wakeupCalled.getAndSet(false);<a name="line.1092"></a> |
| <span class="sourceLineNo">1093</span><a name="line.1093"></a> |
| <span class="sourceLineNo">1094</span> continue;<a name="line.1094"></a> |
| <span class="sourceLineNo">1095</span> } else {<a name="line.1095"></a> |
| <span class="sourceLineNo">1096</span> LOG.warn("Create a new selector. Selected is 0, delta = " + (t1 - t0));<a name="line.1096"></a> |
| <span class="sourceLineNo">1097</span> // Ok, we are hit by the nasty epoll<a name="line.1097"></a> |
| <span class="sourceLineNo">1098</span> // spinning.<a name="line.1098"></a> |
| <span class="sourceLineNo">1099</span> // Basically, there is a race condition<a name="line.1099"></a> |
| <span class="sourceLineNo">1100</span> // which causes a closing file descriptor not to be<a name="line.1100"></a> |
| <span class="sourceLineNo">1101</span> // considered as available as a selected channel,<a name="line.1101"></a> |
| <span class="sourceLineNo">1102</span> // but<a name="line.1102"></a> |
| <span class="sourceLineNo">1103</span> // it stopped the select. The next time we will<a name="line.1103"></a> |
| <span class="sourceLineNo">1104</span> // call select(), it will exit immediately for the<a name="line.1104"></a> |
| <span class="sourceLineNo">1105</span> // same<a name="line.1105"></a> |
| <span class="sourceLineNo">1106</span> // reason, and do so forever, consuming 100%<a name="line.1106"></a> |
| <span class="sourceLineNo">1107</span> // CPU.<a name="line.1107"></a> |
| <span class="sourceLineNo">1108</span> // We have to destroy the selector, and<a name="line.1108"></a> |
| <span class="sourceLineNo">1109</span> // register all the socket on a new one.<a name="line.1109"></a> |
| <span class="sourceLineNo">1110</span> registerNewSelector();<a name="line.1110"></a> |
| <span class="sourceLineNo">1111</span> }<a name="line.1111"></a> |
| <span class="sourceLineNo">1112</span><a name="line.1112"></a> |
| <span class="sourceLineNo">1113</span> // Set back the flag to false<a name="line.1113"></a> |
| <span class="sourceLineNo">1114</span> wakeupCalled.getAndSet(false);<a name="line.1114"></a> |
| <span class="sourceLineNo">1115</span><a name="line.1115"></a> |
| <span class="sourceLineNo">1116</span> // and continue the loop<a name="line.1116"></a> |
| <span class="sourceLineNo">1117</span> continue;<a name="line.1117"></a> |
| <span class="sourceLineNo">1118</span> }<a name="line.1118"></a> |
| <span class="sourceLineNo">1119</span><a name="line.1119"></a> |
| <span class="sourceLineNo">1120</span> // Manage newly created session first<a name="line.1120"></a> |
| <span class="sourceLineNo">1121</span> nSessions += handleNewSessions();<a name="line.1121"></a> |
| <span class="sourceLineNo">1122</span><a name="line.1122"></a> |
| <span class="sourceLineNo">1123</span> updateTrafficMask();<a name="line.1123"></a> |
| <span class="sourceLineNo">1124</span><a name="line.1124"></a> |
| <span class="sourceLineNo">1125</span> // Now, if we have had some incoming or outgoing events,<a name="line.1125"></a> |
| <span class="sourceLineNo">1126</span> // deal with them<a name="line.1126"></a> |
| <span class="sourceLineNo">1127</span> if (selected > 0) {<a name="line.1127"></a> |
| <span class="sourceLineNo">1128</span> // LOG.debug("Processing ..."); // This log hurts one of<a name="line.1128"></a> |
| <span class="sourceLineNo">1129</span> // the MDCFilter test...<a name="line.1129"></a> |
| <span class="sourceLineNo">1130</span> process();<a name="line.1130"></a> |
| <span class="sourceLineNo">1131</span> }<a name="line.1131"></a> |
| <span class="sourceLineNo">1132</span><a name="line.1132"></a> |
| <span class="sourceLineNo">1133</span> // Write the pending requests<a name="line.1133"></a> |
| <span class="sourceLineNo">1134</span> long currentTime = System.currentTimeMillis();<a name="line.1134"></a> |
| <span class="sourceLineNo">1135</span> flush(currentTime);<a name="line.1135"></a> |
| <span class="sourceLineNo">1136</span><a name="line.1136"></a> |
| <span class="sourceLineNo">1137</span> // And manage removed sessions<a name="line.1137"></a> |
| <span class="sourceLineNo">1138</span> nSessions -= removeSessions();<a name="line.1138"></a> |
| <span class="sourceLineNo">1139</span><a name="line.1139"></a> |
| <span class="sourceLineNo">1140</span> // Last, not least, send Idle events to the idle sessions<a name="line.1140"></a> |
| <span class="sourceLineNo">1141</span> notifyIdleSessions(currentTime);<a name="line.1141"></a> |
| <span class="sourceLineNo">1142</span><a name="line.1142"></a> |
| <span class="sourceLineNo">1143</span> // Get a chance to exit the infinite loop if there are no<a name="line.1143"></a> |
| <span class="sourceLineNo">1144</span> // more sessions on this Processor<a name="line.1144"></a> |
| <span class="sourceLineNo">1145</span> if (nSessions == 0) {<a name="line.1145"></a> |
| <span class="sourceLineNo">1146</span> processorRef.set(null);<a name="line.1146"></a> |
| <span class="sourceLineNo">1147</span><a name="line.1147"></a> |
| <span class="sourceLineNo">1148</span> if (newSessions.isEmpty() && isSelectorEmpty()) {<a name="line.1148"></a> |
| <span class="sourceLineNo">1149</span> // newSessions.add() precedes startupProcessor<a name="line.1149"></a> |
| <span class="sourceLineNo">1150</span> assert (processorRef.get() != this);<a name="line.1150"></a> |
| <span class="sourceLineNo">1151</span> break;<a name="line.1151"></a> |
| <span class="sourceLineNo">1152</span> }<a name="line.1152"></a> |
| <span class="sourceLineNo">1153</span><a name="line.1153"></a> |
| <span class="sourceLineNo">1154</span> assert (processorRef.get() != this);<a name="line.1154"></a> |
| <span class="sourceLineNo">1155</span><a name="line.1155"></a> |
| <span class="sourceLineNo">1156</span> if (!processorRef.compareAndSet(null, this)) {<a name="line.1156"></a> |
| <span class="sourceLineNo">1157</span> // startupProcessor won race, so must exit processor<a name="line.1157"></a> |
| <span class="sourceLineNo">1158</span> assert (processorRef.get() != this);<a name="line.1158"></a> |
| <span class="sourceLineNo">1159</span> break;<a name="line.1159"></a> |
| <span class="sourceLineNo">1160</span> }<a name="line.1160"></a> |
| <span class="sourceLineNo">1161</span><a name="line.1161"></a> |
| <span class="sourceLineNo">1162</span> assert (processorRef.get() == this);<a name="line.1162"></a> |
| <span class="sourceLineNo">1163</span> }<a name="line.1163"></a> |
| <span class="sourceLineNo">1164</span><a name="line.1164"></a> |
| <span class="sourceLineNo">1165</span> // Disconnect all sessions immediately if disposal has been<a name="line.1165"></a> |
| <span class="sourceLineNo">1166</span> // requested so that we exit this loop eventually.<a name="line.1166"></a> |
| <span class="sourceLineNo">1167</span> if (isDisposing()) {<a name="line.1167"></a> |
| <span class="sourceLineNo">1168</span> for (Iterator<S> i = allSessions(); i.hasNext();) {<a name="line.1168"></a> |
| <span class="sourceLineNo">1169</span> scheduleRemove(i.next());<a name="line.1169"></a> |
| <span class="sourceLineNo">1170</span> }<a name="line.1170"></a> |
| <span class="sourceLineNo">1171</span><a name="line.1171"></a> |
| <span class="sourceLineNo">1172</span> wakeup();<a name="line.1172"></a> |
| <span class="sourceLineNo">1173</span> }<a name="line.1173"></a> |
| <span class="sourceLineNo">1174</span> } catch (ClosedSelectorException cse) {<a name="line.1174"></a> |
| <span class="sourceLineNo">1175</span> // If the selector has been closed, we can exit the loop<a name="line.1175"></a> |
| <span class="sourceLineNo">1176</span> // But first, dump a stack trace<a name="line.1176"></a> |
| <span class="sourceLineNo">1177</span> ExceptionMonitor.getInstance().exceptionCaught(cse);<a name="line.1177"></a> |
| <span class="sourceLineNo">1178</span> break;<a name="line.1178"></a> |
| <span class="sourceLineNo">1179</span> } catch (Exception e) {<a name="line.1179"></a> |
| <span class="sourceLineNo">1180</span> ExceptionMonitor.getInstance().exceptionCaught(e);<a name="line.1180"></a> |
| <span class="sourceLineNo">1181</span><a name="line.1181"></a> |
| <span class="sourceLineNo">1182</span> try {<a name="line.1182"></a> |
| <span class="sourceLineNo">1183</span> Thread.sleep(1000);<a name="line.1183"></a> |
| <span class="sourceLineNo">1184</span> } catch (InterruptedException e1) {<a name="line.1184"></a> |
| <span class="sourceLineNo">1185</span> ExceptionMonitor.getInstance().exceptionCaught(e1);<a name="line.1185"></a> |
| <span class="sourceLineNo">1186</span> }<a name="line.1186"></a> |
| <span class="sourceLineNo">1187</span> }<a name="line.1187"></a> |
| <span class="sourceLineNo">1188</span> }<a name="line.1188"></a> |
| <span class="sourceLineNo">1189</span><a name="line.1189"></a> |
| <span class="sourceLineNo">1190</span> try {<a name="line.1190"></a> |
| <span class="sourceLineNo">1191</span> synchronized (disposalLock) {<a name="line.1191"></a> |
| <span class="sourceLineNo">1192</span> if (disposing) {<a name="line.1192"></a> |
| <span class="sourceLineNo">1193</span> doDispose();<a name="line.1193"></a> |
| <span class="sourceLineNo">1194</span> }<a name="line.1194"></a> |
| <span class="sourceLineNo">1195</span> }<a name="line.1195"></a> |
| <span class="sourceLineNo">1196</span> } catch (Exception e) {<a name="line.1196"></a> |
| <span class="sourceLineNo">1197</span> ExceptionMonitor.getInstance().exceptionCaught(e);<a name="line.1197"></a> |
| <span class="sourceLineNo">1198</span> } finally {<a name="line.1198"></a> |
| <span class="sourceLineNo">1199</span> disposalFuture.setValue(true);<a name="line.1199"></a> |
| <span class="sourceLineNo">1200</span> }<a name="line.1200"></a> |
| <span class="sourceLineNo">1201</span> }<a name="line.1201"></a> |
| <span class="sourceLineNo">1202</span> }<a name="line.1202"></a> |
| <span class="sourceLineNo">1203</span>}<a name="line.1203"></a> |
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| </div> |
| </body> |
| </html> |
