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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.transport.socket.nio;<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.nio.channels.ByteChannel;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.nio.channels.DatagramChannel;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.nio.channels.SelectableChannel;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.nio.channels.SelectionKey;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.nio.channels.Selector;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.nio.channels.SocketChannel;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.nio.channels.spi.SelectorProvider;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.Iterator;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.Set;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.concurrent.Executor;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span><a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.mina.core.RuntimeIoException;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.mina.core.buffer.IoBuffer;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.mina.core.file.FileRegion;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.mina.core.polling.AbstractPollingIoProcessor;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.mina.core.session.SessionState;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span>/**<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * TODO Add documentation<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> *<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> */<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>public final class NioProcessor extends AbstractPollingIoProcessor<NioSession> {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> /** The selector associated with this processor */<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> private Selector selector;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> private SelectorProvider selectorProvider = null;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span><a name="line.50"></a> |
| <span class="sourceLineNo">051</span> /**<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> *<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * Creates a new instance of NioProcessor.<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> *<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * @param executor The executor to use<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> */<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> public NioProcessor(Executor executor) {<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> super(executor);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> try {<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> // Open a new selector<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> selector = Selector.open();<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> } catch (IOException e) {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> throw new RuntimeIoException("Failed to open a selector.", e);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> }<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> }<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> /**<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> *<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * Creates a new instance of NioProcessor.<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> *<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * @param executor The executor to use<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * @param selectorProvider The Selector provider to use<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> */<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> public NioProcessor(Executor executor, SelectorProvider selectorProvider) {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> super(executor);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> try {<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> // Open a new selector<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> if (selectorProvider == null) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> selector = Selector.open();<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> } else {<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> selector = selectorProvider.openSelector();<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> }<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> } catch (IOException e) {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> throw new RuntimeIoException("Failed to open a selector.", e);<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> }<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> @Override<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> protected void doDispose() throws Exception {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> selector.close();<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> }<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> @Override<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> protected int select(long timeout) throws Exception {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> return selector.select(timeout);<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> @Override<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> protected int select() throws Exception {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> return selector.select();<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> }<a name="line.104"></a> |
| <span class="sourceLineNo">105</span><a name="line.105"></a> |
| <span class="sourceLineNo">106</span> @Override<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> protected boolean isSelectorEmpty() {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> return selector.keys().isEmpty();<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> @Override<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> protected void wakeup() {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> wakeupCalled.getAndSet(true);<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> selector.wakeup();<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span><a name="line.116"></a> |
| <span class="sourceLineNo">117</span> @Override<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> protected Iterator<NioSession> allSessions() {<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> return new IoSessionIterator(selector.keys());<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> }<a name="line.120"></a> |
| <span class="sourceLineNo">121</span><a name="line.121"></a> |
| <span class="sourceLineNo">122</span> @SuppressWarnings("synthetic-access")<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> @Override<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> protected Iterator<NioSession> selectedSessions() {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> return new IoSessionIterator(selector.selectedKeys());<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> }<a name="line.126"></a> |
| <span class="sourceLineNo">127</span><a name="line.127"></a> |
| <span class="sourceLineNo">128</span> @Override<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> protected void init(NioSession session) throws Exception {<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> SelectableChannel ch = (SelectableChannel) session.getChannel();<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> ch.configureBlocking(false);<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> session.setSelectionKey(ch.register(selector, SelectionKey.OP_READ, session));<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> @Override<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> protected void destroy(NioSession session) throws Exception {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> ByteChannel ch = session.getChannel();<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> SelectionKey key = session.getSelectionKey();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> if (key != null) {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> key.cancel();<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> }<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> ch.close();<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> /**<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * In the case we are using the java select() method, this method is used to<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * trash the buggy selector and create a new one, registering all the<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> * sockets on it.<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> */<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> @Override<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> protected void registerNewSelector() throws IOException {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> synchronized (selector) {<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> Set<SelectionKey> keys = selector.keys();<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> // Open a new selector<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> Selector newSelector = null;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span><a name="line.157"></a> |
| <span class="sourceLineNo">158</span> if (selectorProvider == null) {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> newSelector = Selector.open();<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> } else {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> newSelector = selectorProvider.openSelector();<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> }<a name="line.162"></a> |
| <span class="sourceLineNo">163</span><a name="line.163"></a> |
| <span class="sourceLineNo">164</span> // Loop on all the registered keys, and register them on the new selector<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> for (SelectionKey key : keys) {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> SelectableChannel ch = key.channel();<a name="line.166"></a> |
| <span class="sourceLineNo">167</span><a name="line.167"></a> |
| <span class="sourceLineNo">168</span> // Don't forget to attache the session, and back !<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> NioSession session = (NioSession) key.attachment();<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> SelectionKey newKey = ch.register(newSelector, key.interestOps(), session);<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> session.setSelectionKey(newKey);<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> // Now we can close the old selector and switch it<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> selector.close();<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> selector = newSelector;<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> }<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> @Override<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> protected boolean isBrokenConnection() throws IOException {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> // A flag set to true if we find a broken session<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> boolean brokenSession = false;<a name="line.186"></a> |
| <span class="sourceLineNo">187</span><a name="line.187"></a> |
| <span class="sourceLineNo">188</span> synchronized (selector) {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> // Get the selector keys<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> Set<SelectionKey> keys = selector.keys();<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> // Loop on all the keys to see if one of them<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> // has a closed channel<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> for (SelectionKey key : keys) {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> SelectableChannel channel = key.channel();<a name="line.195"></a> |
| <span class="sourceLineNo">196</span><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> if ((((channel instanceof DatagramChannel) && !((DatagramChannel) channel).isConnected()))<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> || ((channel instanceof SocketChannel) && !((SocketChannel) channel).isConnected())) {<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> // The channel is not connected anymore. Cancel<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> // the associated key then.<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> key.cancel();<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> // Set the flag to true to avoid a selector switch<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> brokenSession = true;<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> }<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><a name="line.208"></a> |
| <span class="sourceLineNo">209</span> return brokenSession;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span><a name="line.211"></a> |
| <span class="sourceLineNo">212</span> /**<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> * {@inheritDoc}<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> */<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> @Override<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> protected SessionState getState(NioSession session) {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> SelectionKey key = session.getSelectionKey();<a name="line.217"></a> |
| <span class="sourceLineNo">218</span><a name="line.218"></a> |
| <span class="sourceLineNo">219</span> if (key == null) {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> // The channel is not yet registred to a selector<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> return SessionState.OPENING;<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> }<a name="line.222"></a> |
| <span class="sourceLineNo">223</span><a name="line.223"></a> |
| <span class="sourceLineNo">224</span> if (key.isValid()) {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> // The session is opened<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> return SessionState.OPENED;<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> } else {<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> // The session still as to be closed<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> return SessionState.CLOSING;<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> }<a name="line.231"></a> |
| <span class="sourceLineNo">232</span><a name="line.232"></a> |
| <span class="sourceLineNo">233</span> @Override<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> protected boolean isReadable(NioSession session) {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> SelectionKey key = session.getSelectionKey();<a name="line.235"></a> |
| <span class="sourceLineNo">236</span><a name="line.236"></a> |
| <span class="sourceLineNo">237</span> return (key != null) && key.isValid() && key.isReadable();<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span><a name="line.239"></a> |
| <span class="sourceLineNo">240</span> @Override<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> protected boolean isWritable(NioSession session) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> SelectionKey key = session.getSelectionKey();<a name="line.242"></a> |
| <span class="sourceLineNo">243</span><a name="line.243"></a> |
| <span class="sourceLineNo">244</span> return (key != null) && key.isValid() && key.isWritable();<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span><a name="line.246"></a> |
| <span class="sourceLineNo">247</span> @Override<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> protected boolean isInterestedInRead(NioSession session) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> SelectionKey key = session.getSelectionKey();<a name="line.249"></a> |
| <span class="sourceLineNo">250</span><a name="line.250"></a> |
| <span class="sourceLineNo">251</span> return (key != null) && key.isValid() && ((key.interestOps() & SelectionKey.OP_READ) != 0);<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span><a name="line.253"></a> |
| <span class="sourceLineNo">254</span> @Override<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> protected boolean isInterestedInWrite(NioSession session) {<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> SelectionKey key = session.getSelectionKey();<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> return (key != null) && key.isValid() && ((key.interestOps() & SelectionKey.OP_WRITE) != 0);<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> }<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> /**<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> * {@inheritDoc}<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> */<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> @Override<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> protected void setInterestedInRead(NioSession session, boolean isInterested) throws Exception {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> SelectionKey key = session.getSelectionKey();<a name="line.266"></a> |
| <span class="sourceLineNo">267</span><a name="line.267"></a> |
| <span class="sourceLineNo">268</span> if ((key == null) || !key.isValid()) {<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> return;<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> }<a name="line.270"></a> |
| <span class="sourceLineNo">271</span><a name="line.271"></a> |
| <span class="sourceLineNo">272</span> int oldInterestOps = key.interestOps();<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> int newInterestOps = oldInterestOps;<a name="line.273"></a> |
| <span class="sourceLineNo">274</span><a name="line.274"></a> |
| <span class="sourceLineNo">275</span> if (isInterested) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> newInterestOps |= SelectionKey.OP_READ;<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> } else {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> newInterestOps &= ~SelectionKey.OP_READ;<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> if (oldInterestOps != newInterestOps) {<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> key.interestOps(newInterestOps);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> }<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> }<a name="line.284"></a> |
| <span class="sourceLineNo">285</span><a name="line.285"></a> |
| <span class="sourceLineNo">286</span> /**<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * {@inheritDoc}<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> */<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> @Override<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> protected void setInterestedInWrite(NioSession session, boolean isInterested) throws Exception {<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> SelectionKey key = session.getSelectionKey();<a name="line.291"></a> |
| <span class="sourceLineNo">292</span><a name="line.292"></a> |
| <span class="sourceLineNo">293</span> if ((key == null) || !key.isValid()) {<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> return;<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> }<a name="line.295"></a> |
| <span class="sourceLineNo">296</span><a name="line.296"></a> |
| <span class="sourceLineNo">297</span> int newInterestOps = key.interestOps();<a name="line.297"></a> |
| <span class="sourceLineNo">298</span><a name="line.298"></a> |
| <span class="sourceLineNo">299</span> if (isInterested) {<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> newInterestOps |= SelectionKey.OP_WRITE;<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> } else {<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> newInterestOps &= ~SelectionKey.OP_WRITE;<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> }<a name="line.303"></a> |
| <span class="sourceLineNo">304</span><a name="line.304"></a> |
| <span class="sourceLineNo">305</span> key.interestOps(newInterestOps);<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> }<a name="line.306"></a> |
| <span class="sourceLineNo">307</span><a name="line.307"></a> |
| <span class="sourceLineNo">308</span> @Override<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> protected int read(NioSession session, IoBuffer buf) throws Exception {<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> ByteChannel channel = session.getChannel();<a name="line.310"></a> |
| <span class="sourceLineNo">311</span><a name="line.311"></a> |
| <span class="sourceLineNo">312</span> return channel.read(buf.buf());<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> }<a name="line.313"></a> |
| <span class="sourceLineNo">314</span><a name="line.314"></a> |
| <span class="sourceLineNo">315</span> @Override<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> protected int write(NioSession session, IoBuffer buf, int length) throws Exception {<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> if (buf.remaining() <= length) {<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> return session.getChannel().write(buf.buf());<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> }<a name="line.319"></a> |
| <span class="sourceLineNo">320</span><a name="line.320"></a> |
| <span class="sourceLineNo">321</span> int oldLimit = buf.limit();<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> buf.limit(buf.position() + length);<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> try {<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> return session.getChannel().write(buf.buf());<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> } finally {<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> buf.limit(oldLimit);<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> }<a name="line.328"></a> |
| <span class="sourceLineNo">329</span><a name="line.329"></a> |
| <span class="sourceLineNo">330</span> @Override<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> protected int transferFile(NioSession session, FileRegion region, int length) throws Exception {<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> try {<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> return (int) region.getFileChannel().transferTo(region.getPosition(), length, session.getChannel());<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> } catch (IOException e) {<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> // Check to see if the IOException is being thrown due to<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5103988<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> String message = e.getMessage();<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> if ((message != null) && message.contains("temporarily unavailable")) {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> return 0;<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> throw e;<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> }<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> }<a name="line.344"></a> |
| <span class="sourceLineNo">345</span><a name="line.345"></a> |
| <span class="sourceLineNo">346</span> /**<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> * An encapsulating iterator around the {@link Selector#selectedKeys()} or<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> * the {@link Selector#keys()} iterator;<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> */<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> protected static class IoSessionIterator<NioSession> implements Iterator<NioSession> {<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> private final Iterator<SelectionKey> iterator;<a name="line.351"></a> |
| <span class="sourceLineNo">352</span><a name="line.352"></a> |
| <span class="sourceLineNo">353</span> /**<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> * Create this iterator as a wrapper on top of the selectionKey Set.<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> *<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> * @param keys<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> * The set of selected sessions<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> */<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> private IoSessionIterator(Set<SelectionKey> keys) {<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> iterator = keys.iterator();<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> }<a name="line.361"></a> |
| <span class="sourceLineNo">362</span><a name="line.362"></a> |
| <span class="sourceLineNo">363</span> /**<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> * {@inheritDoc}<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> */<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> public boolean hasNext() {<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> return iterator.hasNext();<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> }<a name="line.368"></a> |
| <span class="sourceLineNo">369</span><a name="line.369"></a> |
| <span class="sourceLineNo">370</span> /**<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> * {@inheritDoc}<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> */<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> public NioSession next() {<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> SelectionKey key = iterator.next();<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> NioSession nioSession = (NioSession) key.attachment();<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> return nioSession;<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> }<a name="line.377"></a> |
| <span class="sourceLineNo">378</span><a name="line.378"></a> |
| <span class="sourceLineNo">379</span> /**<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> * {@inheritDoc}<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> */<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> public void remove() {<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> iterator.remove();<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> }<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> }<a name="line.385"></a> |
| <span class="sourceLineNo">386</span>}<a name="line.386"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
