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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.filter.executor;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.ArrayList;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.HashSet;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.util.List;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.Queue;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.Set;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.concurrent.BlockingQueue;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.concurrent.ConcurrentLinkedQueue;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.concurrent.Executors;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.concurrent.RejectedExecutionHandler;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.concurrent.SynchronousQueue;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import java.util.concurrent.ThreadFactory;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import java.util.concurrent.ThreadPoolExecutor;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import java.util.concurrent.TimeUnit;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span><a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.mina.core.session.AttributeKey;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.mina.core.session.DummySession;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.mina.core.session.IoEvent;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.apache.mina.core.session.IoSession;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.slf4j.Logger;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.slf4j.LoggerFactory;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span>/**<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * A {@link ThreadPoolExecutor} that maintains the order of {@link IoEvent}s.<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * <p><a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * If you don't need to maintain the order of events per session, please use<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * {@link UnorderedThreadPoolExecutor}.<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * @org.apache.xbean.XBean<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> */<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>public class OrderedThreadPoolExecutor extends ThreadPoolExecutor {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> /** A logger for this class (commented as it breaks MDCFlter tests) */<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> private static final Logger LOGGER = LoggerFactory.getLogger(OrderedThreadPoolExecutor.class);<a name="line.57"></a> |
| <span class="sourceLineNo">058</span><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> /** A default value for the initial pool size */<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> private static final int DEFAULT_INITIAL_THREAD_POOL_SIZE = 0;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> /** A default value for the maximum pool size */<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private static final int DEFAULT_MAX_THREAD_POOL = 16;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> /** A default value for the KeepAlive delay */<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> private static final int DEFAULT_KEEP_ALIVE = 30;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> private static final IoSession EXIT_SIGNAL = new DummySession();<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> /** A key stored into the session's attribute for the event tasks being queued */<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> private final AttributeKey TASKS_QUEUE = new AttributeKey(getClass(), "tasksQueue");<a name="line.71"></a> |
| <span class="sourceLineNo">072</span><a name="line.72"></a> |
| <span class="sourceLineNo">073</span> /** A queue used to store the available sessions */<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> private final BlockingQueue<IoSession> waitingSessions = new LinkedBlockingQueue<IoSession>();<a name="line.74"></a> |
| <span class="sourceLineNo">075</span><a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private final Set<Worker> workers = new HashSet<Worker>();<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> private volatile int largestPoolSize;<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> private final AtomicInteger idleWorkers = new AtomicInteger();<a name="line.80"></a> |
| <span class="sourceLineNo">081</span><a name="line.81"></a> |
| <span class="sourceLineNo">082</span> private long completedTaskCount;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> private volatile boolean shutdown;<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> private final IoEventQueueHandler eventQueueHandler;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span><a name="line.87"></a> |
| <span class="sourceLineNo">088</span> /**<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * Creates a default ThreadPool, with default values :<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * - minimum pool size is 0<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * - maximum pool size is 16<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * - keepAlive set to 30 seconds<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * - A default ThreadFactory<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * - All events are accepted<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> */<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> public OrderedThreadPoolExecutor() {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> this(DEFAULT_INITIAL_THREAD_POOL_SIZE, DEFAULT_MAX_THREAD_POOL, DEFAULT_KEEP_ALIVE, TimeUnit.SECONDS, Executors<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> .defaultThreadFactory(), null);<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> /**<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * Creates a default ThreadPool, with default values :<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * - minimum pool size is 0<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * - keepAlive set to 30 seconds<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * - A default ThreadFactory<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * - All events are accepted<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> * <a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * @param maximumPoolSize The maximum pool size<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> */<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> public OrderedThreadPoolExecutor(int maximumPoolSize) {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> this(DEFAULT_INITIAL_THREAD_POOL_SIZE, maximumPoolSize, DEFAULT_KEEP_ALIVE, TimeUnit.SECONDS, Executors<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> .defaultThreadFactory(), null);<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> }<a name="line.113"></a> |
| <span class="sourceLineNo">114</span><a name="line.114"></a> |
| <span class="sourceLineNo">115</span> /**<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * Creates a default ThreadPool, with default values :<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * - keepAlive set to 30 seconds<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> * - A default ThreadFactory<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * - All events are accepted<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> *<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> * @param corePoolSize The initial pool sizePoolSize<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> * @param maximumPoolSize The maximum pool size<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> */<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> public OrderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize) {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> this(corePoolSize, maximumPoolSize, DEFAULT_KEEP_ALIVE, TimeUnit.SECONDS, Executors.defaultThreadFactory(),<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> null);<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span><a name="line.128"></a> |
| <span class="sourceLineNo">129</span> /**<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> * Creates a default ThreadPool, with default values :<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> * - A default ThreadFactory<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> * - All events are accepted<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * <a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * @param corePoolSize The initial pool sizePoolSize<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @param maximumPoolSize The maximum pool size<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * @param keepAliveTime Default duration for a thread<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> * @param unit Time unit used for the keepAlive value<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> */<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> public OrderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit) {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> this(corePoolSize, maximumPoolSize, keepAliveTime, unit, Executors.defaultThreadFactory(), null);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> }<a name="line.141"></a> |
| <span class="sourceLineNo">142</span><a name="line.142"></a> |
| <span class="sourceLineNo">143</span> /**<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * Creates a default ThreadPool, with default values :<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * - A default ThreadFactory<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * <a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * @param corePoolSize The initial pool sizePoolSize<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> * @param maximumPoolSize The maximum pool size<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> * @param keepAliveTime Default duration for a thread<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> * @param unit Time unit used for the keepAlive value<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * @param eventQueueHandler The queue used to store events<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> */<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> public OrderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> IoEventQueueHandler eventQueueHandler) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> this(corePoolSize, maximumPoolSize, keepAliveTime, unit, Executors.defaultThreadFactory(), eventQueueHandler);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> }<a name="line.156"></a> |
| <span class="sourceLineNo">157</span><a name="line.157"></a> |
| <span class="sourceLineNo">158</span> /**<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> * Creates a default ThreadPool, with default values :<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * - A default ThreadFactory<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * <a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * @param corePoolSize The initial pool sizePoolSize<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> * @param maximumPoolSize The maximum pool size<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * @param keepAliveTime Default duration for a thread<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * @param unit Time unit used for the keepAlive value<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * @param threadFactory The factory used to create threads<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> */<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> public OrderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> ThreadFactory threadFactory) {<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> this(corePoolSize, maximumPoolSize, keepAliveTime, unit, threadFactory, null);<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> }<a name="line.171"></a> |
| <span class="sourceLineNo">172</span><a name="line.172"></a> |
| <span class="sourceLineNo">173</span> /**<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * Creates a new instance of a OrderedThreadPoolExecutor.<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> * <a name="line.175"></a> |
| <span class="sourceLineNo">176</span> * @param corePoolSize The initial pool sizePoolSize<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * @param maximumPoolSize The maximum pool size<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> * @param keepAliveTime Default duration for a thread<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> * @param unit Time unit used for the keepAlive value<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> * @param threadFactory The factory used to create threads<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * @param eventQueueHandler The queue used to store events<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> */<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> public OrderedThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit,<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> ThreadFactory threadFactory, IoEventQueueHandler eventQueueHandler) {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> // We have to initialize the pool with default values (0 and 1) in order to<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> // handle the exception in a better way. We can't add a try {} catch() {}<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> // around the super() call.<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> super(DEFAULT_INITIAL_THREAD_POOL_SIZE, 1, keepAliveTime, unit, new SynchronousQueue<Runnable>(),<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> threadFactory, new AbortPolicy());<a name="line.189"></a> |
| <span class="sourceLineNo">190</span><a name="line.190"></a> |
| <span class="sourceLineNo">191</span> if (corePoolSize < DEFAULT_INITIAL_THREAD_POOL_SIZE) {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> throw new IllegalArgumentException("corePoolSize: " + corePoolSize);<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> }<a name="line.193"></a> |
| <span class="sourceLineNo">194</span><a name="line.194"></a> |
| <span class="sourceLineNo">195</span> if ((maximumPoolSize == 0) || (maximumPoolSize < corePoolSize)) {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> throw new IllegalArgumentException("maximumPoolSize: " + maximumPoolSize);<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> }<a name="line.197"></a> |
| <span class="sourceLineNo">198</span><a name="line.198"></a> |
| <span class="sourceLineNo">199</span> // Now, we can setup the pool sizes<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> super.setCorePoolSize(corePoolSize);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> super.setMaximumPoolSize(maximumPoolSize);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> // The queueHandler might be null.<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> if (eventQueueHandler == null) {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> this.eventQueueHandler = IoEventQueueHandler.NOOP;<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> } else {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> this.eventQueueHandler = eventQueueHandler;<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> }<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<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> * Get the session's tasks queue.<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> */<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> private SessionTasksQueue getSessionTasksQueue(IoSession session) {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> SessionTasksQueue queue = (SessionTasksQueue) session.getAttribute(TASKS_QUEUE);<a name="line.215"></a> |
| <span class="sourceLineNo">216</span><a name="line.216"></a> |
| <span class="sourceLineNo">217</span> if (queue == null) {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> queue = new SessionTasksQueue();<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> SessionTasksQueue oldQueue = (SessionTasksQueue) session.setAttributeIfAbsent(TASKS_QUEUE, queue);<a name="line.219"></a> |
| <span class="sourceLineNo">220</span><a name="line.220"></a> |
| <span class="sourceLineNo">221</span> if (oldQueue != null) {<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> queue = oldQueue;<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> }<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> }<a name="line.224"></a> |
| <span class="sourceLineNo">225</span><a name="line.225"></a> |
| <span class="sourceLineNo">226</span> return queue;<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span><a name="line.228"></a> |
| <span class="sourceLineNo">229</span> /**<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> * @return The associated queue handler. <a name="line.230"></a> |
| <span class="sourceLineNo">231</span> */<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> public IoEventQueueHandler getQueueHandler() {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> return eventQueueHandler;<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> /**<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> * {@inheritDoc}<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> */<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> @Override<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> public void setRejectedExecutionHandler(RejectedExecutionHandler handler) {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> // Ignore the request. It must always be AbortPolicy.<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> }<a name="line.242"></a> |
| <span class="sourceLineNo">243</span><a name="line.243"></a> |
| <span class="sourceLineNo">244</span> /**<a name="line.244"></a> |
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| <span class="sourceLineNo">246</span> * It depends on the current pool size. If it's full, we do nothing.<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> */<a name="line.247"></a> |
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| <span class="sourceLineNo">249</span> synchronized (workers) {<a name="line.249"></a> |
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| <span class="sourceLineNo">251</span> return;<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> // Create a new worker, and add it to the thread pool<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> Worker worker = new Worker();<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> Thread thread = getThreadFactory().newThread(worker);<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> // As we have added a new thread, it's considered as idle.<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> idleWorkers.incrementAndGet();<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> // Now, we can start it.<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> thread.start();<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> workers.add(worker);<a name="line.263"></a> |
| <span class="sourceLineNo">264</span><a name="line.264"></a> |
| <span class="sourceLineNo">265</span> if (workers.size() > largestPoolSize) {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> largestPoolSize = workers.size();<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> }<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> }<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> * Add a new Worker only if there are no idle worker.<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> */<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> private void addWorkerIfNecessary() {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> if (idleWorkers.get() == 0) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> synchronized (workers) {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> if (workers.isEmpty() || (idleWorkers.get() == 0)) {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> addWorker();<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> }<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> private void removeWorker() {<a name="line.284"></a> |
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| <span class="sourceLineNo">287</span> return;<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> }<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> waitingSessions.offer(EXIT_SIGNAL);<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> }<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span><a name="line.292"></a> |
| <span class="sourceLineNo">293</span> /**<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> * {@inheritDoc}<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> */<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> @Override<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> public int getMaximumPoolSize() {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> return super.getMaximumPoolSize();<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span><a name="line.300"></a> |
| <span class="sourceLineNo">301</span> /**<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> * {@inheritDoc}<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> */<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> @Override<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> public void setMaximumPoolSize(int maximumPoolSize) {<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> if ((maximumPoolSize <= 0) || (maximumPoolSize < super.getCorePoolSize())) {<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> throw new IllegalArgumentException("maximumPoolSize: " + maximumPoolSize);<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> }<a name="line.308"></a> |
| <span class="sourceLineNo">309</span><a name="line.309"></a> |
| <span class="sourceLineNo">310</span> synchronized (workers) {<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> super.setMaximumPoolSize(maximumPoolSize);<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> int difference = workers.size() - maximumPoolSize;<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> while (difference > 0) {<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> removeWorker();<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> --difference;<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> }<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> }<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> }<a name="line.318"></a> |
| <span class="sourceLineNo">319</span><a name="line.319"></a> |
| <span class="sourceLineNo">320</span> /**<a name="line.320"></a> |
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| <span class="sourceLineNo">323</span> @Override<a name="line.323"></a> |
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| <span class="sourceLineNo">325</span><a name="line.325"></a> |
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| <span class="sourceLineNo">327</span><a name="line.327"></a> |
| <span class="sourceLineNo">328</span> synchronized (workers) {<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> while (!isTerminated()) {<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> long waitTime = deadline - System.currentTimeMillis();<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> if (waitTime <= 0) {<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> break;<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> }<a name="line.333"></a> |
| <span class="sourceLineNo">334</span><a name="line.334"></a> |
| <span class="sourceLineNo">335</span> workers.wait(waitTime);<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> }<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> }<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> return isTerminated();<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> }<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> * {@inheritDoc}<a name="line.342"></a> |
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| <span class="sourceLineNo">344</span> @Override<a name="line.344"></a> |
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| <span class="sourceLineNo">347</span> }<a name="line.347"></a> |
| <span class="sourceLineNo">348</span><a name="line.348"></a> |
| <span class="sourceLineNo">349</span> /**<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> * {@inheritDoc}<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> */<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> @Override<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> public boolean isTerminated() {<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> if (!shutdown) {<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> return false;<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> }<a name="line.356"></a> |
| <span class="sourceLineNo">357</span><a name="line.357"></a> |
| <span class="sourceLineNo">358</span> synchronized (workers) {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> return workers.isEmpty();<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> }<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> |
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| <span class="sourceLineNo">366</span> @Override<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> public void shutdown() {<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> if (shutdown) {<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> return;<a name="line.369"></a> |
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| <span class="sourceLineNo">371</span><a name="line.371"></a> |
| <span class="sourceLineNo">372</span> shutdown = true;<a name="line.372"></a> |
| <span class="sourceLineNo">373</span><a name="line.373"></a> |
| <span class="sourceLineNo">374</span> synchronized (workers) {<a name="line.374"></a> |
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| <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><a name="line.380"></a> |
| <span class="sourceLineNo">381</span> /**<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> * {@inheritDoc}<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> */<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> @Override<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> public List<Runnable> shutdownNow() {<a name="line.385"></a> |
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| <span class="sourceLineNo">387</span><a name="line.387"></a> |
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| <span class="sourceLineNo">390</span><a name="line.390"></a> |
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| <span class="sourceLineNo">393</span> waitingSessions.offer(EXIT_SIGNAL);<a name="line.393"></a> |
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| <span class="sourceLineNo">395</span> continue;<a name="line.395"></a> |
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| <span class="sourceLineNo">414</span> /**<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> * A Helper class used to print the list of events being queued. <a name="line.415"></a> |
| <span class="sourceLineNo">416</span> */<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> private void print(Queue<Runnable> queue, IoEvent event) {<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> StringBuilder sb = new StringBuilder();<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> sb.append("Adding event ").append(event.getType()).append(" to session ").append(event.getSession().getId());<a name="line.419"></a> |
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| <span class="sourceLineNo">421</span> sb.append("\nQueue : [");<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> for (Runnable elem : queue) {<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> if (first) {<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> first = false;<a name="line.424"></a> |
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| <span class="sourceLineNo">426</span> sb.append(", ");<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> |
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| <span class="sourceLineNo">431</span> sb.append("]\n");<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> LOGGER.debug(sb.toString());<a name="line.432"></a> |
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| <span class="sourceLineNo">435</span> /**<a name="line.435"></a> |
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| <span class="sourceLineNo">438</span> @Override<a name="line.438"></a> |
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| <span class="sourceLineNo">449</span> // Get the associated session<a name="line.449"></a> |
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| <span class="sourceLineNo">451</span><a name="line.451"></a> |
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| <span class="sourceLineNo">457</span><a name="line.457"></a> |
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| <span class="sourceLineNo">459</span> // use a throttle queue handler, the message may be rejected<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> // if the maximum size has been reached.<a name="line.460"></a> |
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| <span class="sourceLineNo">462</span><a name="line.462"></a> |
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| <span class="sourceLineNo">464</span> // Ok, the message has been accepted<a name="line.464"></a> |
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| <span class="sourceLineNo">466</span> // Inject the event into the executor taskQueue<a name="line.466"></a> |
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| <span class="sourceLineNo">468</span><a name="line.468"></a> |
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| <span class="sourceLineNo">473</span> offerSession = false;<a name="line.473"></a> |
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| <span class="sourceLineNo">475</span><a name="line.475"></a> |
| <span class="sourceLineNo">476</span> if (LOGGER.isDebugEnabled()) {<a name="line.476"></a> |
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| <span class="sourceLineNo">479</span> }<a name="line.479"></a> |
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| <span class="sourceLineNo">483</span><a name="line.483"></a> |
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| <span class="sourceLineNo">486</span> // immediately, so we can move the session to the queue<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> // of sessions waiting for completion.<a name="line.487"></a> |
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| <span class="sourceLineNo">490</span><a name="line.490"></a> |
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| <span class="sourceLineNo">492</span><a name="line.492"></a> |
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| <span class="sourceLineNo">496</span> }<a name="line.496"></a> |
| <span class="sourceLineNo">497</span><a name="line.497"></a> |
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| <span class="sourceLineNo">501</span><a name="line.501"></a> |
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| <span class="sourceLineNo">562</span> @Override<a name="line.562"></a> |
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| <span class="sourceLineNo">642</span><a name="line.642"></a> |
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| <span class="sourceLineNo">662</span><a name="line.662"></a> |
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| <span class="sourceLineNo">676</span><a name="line.676"></a> |
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| <span class="sourceLineNo">678</span><a name="line.678"></a> |
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| <span class="sourceLineNo">681</span><a name="line.681"></a> |
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| <span class="sourceLineNo">685</span><a name="line.685"></a> |
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| <span class="sourceLineNo">687</span><a name="line.687"></a> |
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| <span class="sourceLineNo">701</span><a name="line.701"></a> |
| <span class="sourceLineNo">702</span> try {<a name="line.702"></a> |
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| <span class="sourceLineNo">717</span> }<a name="line.717"></a> |
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| <span class="sourceLineNo">729</span><a name="line.729"></a> |
| <span class="sourceLineNo">730</span> try {<a name="line.730"></a> |
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| <span class="sourceLineNo">745</span><a name="line.745"></a> |
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| <span class="sourceLineNo">753</span><a name="line.753"></a> |
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| <span class="sourceLineNo">758</span> }<a name="line.758"></a> |
| <span class="sourceLineNo">759</span><a name="line.759"></a> |
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| <span class="sourceLineNo">761</span><a name="line.761"></a> |
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| <span class="sourceLineNo">765</span><a name="line.765"></a> |
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| <span class="sourceLineNo">768</span> boolean ran = false;<a name="line.768"></a> |
| <span class="sourceLineNo">769</span> try {<a name="line.769"></a> |
| <span class="sourceLineNo">770</span> task.run();<a name="line.770"></a> |
| <span class="sourceLineNo">771</span> ran = true;<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> afterExecute(task, null);<a name="line.772"></a> |
| <span class="sourceLineNo">773</span> completedTaskCount.incrementAndGet();<a name="line.773"></a> |
| <span class="sourceLineNo">774</span> } catch (RuntimeException e) {<a name="line.774"></a> |
| <span class="sourceLineNo">775</span> if (!ran) {<a name="line.775"></a> |
| <span class="sourceLineNo">776</span> afterExecute(task, e);<a name="line.776"></a> |
| <span class="sourceLineNo">777</span> }<a name="line.777"></a> |
| <span class="sourceLineNo">778</span> throw e;<a name="line.778"></a> |
| <span class="sourceLineNo">779</span> }<a name="line.779"></a> |
| <span class="sourceLineNo">780</span> }<a name="line.780"></a> |
| <span class="sourceLineNo">781</span> }<a name="line.781"></a> |
| <span class="sourceLineNo">782</span><a name="line.782"></a> |
| <span class="sourceLineNo">783</span> /**<a name="line.783"></a> |
| <span class="sourceLineNo">784</span> * A class used to store the ordered list of events to be processed by the<a name="line.784"></a> |
| <span class="sourceLineNo">785</span> * session, and the current task state.<a name="line.785"></a> |
| <span class="sourceLineNo">786</span> */<a name="line.786"></a> |
| <span class="sourceLineNo">787</span> private class SessionTasksQueue {<a name="line.787"></a> |
| <span class="sourceLineNo">788</span> /** A queue of ordered event waiting to be processed */<a name="line.788"></a> |
| <span class="sourceLineNo">789</span> private final Queue<Runnable> tasksQueue = new ConcurrentLinkedQueue<Runnable>();<a name="line.789"></a> |
| <span class="sourceLineNo">790</span><a name="line.790"></a> |
| <span class="sourceLineNo">791</span> /** The current task state */<a name="line.791"></a> |
| <span class="sourceLineNo">792</span> private boolean processingCompleted = true;<a name="line.792"></a> |
| <span class="sourceLineNo">793</span> }<a name="line.793"></a> |
| <span class="sourceLineNo">794</span>}<a name="line.794"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
