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From pste...@apache.org
Subject svn commit: r953350 [27/37] - in /websites/production/commons/content/proper/commons-pool: api-2.4.1/ api-2.4.1/org/ api-2.4.1/org/apache/ api-2.4.1/org/apache/commons/ api-2.4.1/org/apache/commons/pool2/ api-2.4.1/org/apache/commons/pool2/class-use/ a...
Date Sun, 31 May 2015 22:24:05 GMT
Added: websites/production/commons/content/proper/commons-pool/api-2.4.1/src-html/org/apache/commons/pool2/PoolUtils.html
==============================================================================
--- websites/production/commons/content/proper/commons-pool/api-2.4.1/src-html/org/apache/commons/pool2/PoolUtils.html (added)
+++ websites/production/commons/content/proper/commons-pool/api-2.4.1/src-html/org/apache/commons/pool2/PoolUtils.html Sun May 31 22:24:03 2015
@@ -0,0 +1,1875 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<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 or more<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * the License.  You may obtain a copy of the License at<a name="line.7"></a>
+<span class="sourceLineNo">008</span> *<a name="line.8"></a>
+<span class="sourceLineNo">009</span> *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *<a name="line.10"></a>
+<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * See the License for the specific language governing permissions and<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * limitations under the License.<a name="line.15"></a>
+<span class="sourceLineNo">016</span> */<a name="line.16"></a>
+<span class="sourceLineNo">017</span>package org.apache.commons.pool2;<a name="line.17"></a>
+<span class="sourceLineNo">018</span><a name="line.18"></a>
+<span class="sourceLineNo">019</span>import java.util.Collection;<a name="line.19"></a>
+<span class="sourceLineNo">020</span>import java.util.HashMap;<a name="line.20"></a>
+<span class="sourceLineNo">021</span>import java.util.Iterator;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.util.Map;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.util.NoSuchElementException;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.Timer;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.TimerTask;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.Collections;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.concurrent.locks.ReentrantReadWriteLock;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>/**<a name="line.31"></a>
+<span class="sourceLineNo">032</span> * This class consists exclusively of static methods that operate on or return<a name="line.32"></a>
+<span class="sourceLineNo">033</span> * ObjectPool or KeyedObjectPool related interfaces.<a name="line.33"></a>
+<span class="sourceLineNo">034</span> *<a name="line.34"></a>
+<span class="sourceLineNo">035</span> * @version $Revision: 1566584 $<a name="line.35"></a>
+<span class="sourceLineNo">036</span> *<a name="line.36"></a>
+<span class="sourceLineNo">037</span> * @since 2.0<a name="line.37"></a>
+<span class="sourceLineNo">038</span> */<a name="line.38"></a>
+<span class="sourceLineNo">039</span>public final class PoolUtils {<a name="line.39"></a>
+<span class="sourceLineNo">040</span><a name="line.40"></a>
+<span class="sourceLineNo">041</span>    /**<a name="line.41"></a>
+<span class="sourceLineNo">042</span>     * Timer used to periodically check pools idle object count. Because a<a name="line.42"></a>
+<span class="sourceLineNo">043</span>     * {@link Timer} creates a {@link Thread}, an IODH is used.<a name="line.43"></a>
+<span class="sourceLineNo">044</span>     */<a name="line.44"></a>
+<span class="sourceLineNo">045</span>    static class TimerHolder {<a name="line.45"></a>
+<span class="sourceLineNo">046</span>        static final Timer MIN_IDLE_TIMER = new Timer(true);<a name="line.46"></a>
+<span class="sourceLineNo">047</span>    }<a name="line.47"></a>
+<span class="sourceLineNo">048</span><a name="line.48"></a>
+<span class="sourceLineNo">049</span>    /**<a name="line.49"></a>
+<span class="sourceLineNo">050</span>     * PoolUtils instances should NOT be constructed in standard programming.<a name="line.50"></a>
+<span class="sourceLineNo">051</span>     * Instead, the class should be used procedurally: PoolUtils.adapt(aPool);.<a name="line.51"></a>
+<span class="sourceLineNo">052</span>     * This constructor is public to permit tools that require a JavaBean<a name="line.52"></a>
+<span class="sourceLineNo">053</span>     * instance to operate.<a name="line.53"></a>
+<span class="sourceLineNo">054</span>     */<a name="line.54"></a>
+<span class="sourceLineNo">055</span>    public PoolUtils() {<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>    /**<a name="line.58"></a>
+<span class="sourceLineNo">059</span>     * Should the supplied Throwable be re-thrown (eg if it is an instance of<a name="line.59"></a>
+<span class="sourceLineNo">060</span>     * one of the Throwables that should never be swallowed). Used by the pool<a name="line.60"></a>
+<span class="sourceLineNo">061</span>     * error handling for operations that throw exceptions that normally need to<a name="line.61"></a>
+<span class="sourceLineNo">062</span>     * be ignored.<a name="line.62"></a>
+<span class="sourceLineNo">063</span>     *<a name="line.63"></a>
+<span class="sourceLineNo">064</span>     * @param t<a name="line.64"></a>
+<span class="sourceLineNo">065</span>     *            The Throwable to check<a name="line.65"></a>
+<span class="sourceLineNo">066</span>     * @throws ThreadDeath<a name="line.66"></a>
+<span class="sourceLineNo">067</span>     *             if that is passed in<a name="line.67"></a>
+<span class="sourceLineNo">068</span>     * @throws VirtualMachineError<a name="line.68"></a>
+<span class="sourceLineNo">069</span>     *             if that is passed in<a name="line.69"></a>
+<span class="sourceLineNo">070</span>     */<a name="line.70"></a>
+<span class="sourceLineNo">071</span>    public static void checkRethrow(Throwable t) {<a name="line.71"></a>
+<span class="sourceLineNo">072</span>        if (t instanceof ThreadDeath) {<a name="line.72"></a>
+<span class="sourceLineNo">073</span>            throw (ThreadDeath) t;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>        }<a name="line.74"></a>
+<span class="sourceLineNo">075</span>        if (t instanceof VirtualMachineError) {<a name="line.75"></a>
+<span class="sourceLineNo">076</span>            throw (VirtualMachineError) t;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>        }<a name="line.77"></a>
+<span class="sourceLineNo">078</span>        // All other instances of Throwable will be silently swallowed<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 name="line.81"></a>
+<span class="sourceLineNo">082</span>     * Periodically check the idle object count for the pool. At most one idle<a name="line.82"></a>
+<span class="sourceLineNo">083</span>     * object will be added per period. If there is an exception when calling<a name="line.83"></a>
+<span class="sourceLineNo">084</span>     * {@link ObjectPool#addObject()} then no more checks will be performed.<a name="line.84"></a>
+<span class="sourceLineNo">085</span>     *<a name="line.85"></a>
+<span class="sourceLineNo">086</span>     * @param pool<a name="line.86"></a>
+<span class="sourceLineNo">087</span>     *            the pool to check periodically.<a name="line.87"></a>
+<span class="sourceLineNo">088</span>     * @param minIdle<a name="line.88"></a>
+<span class="sourceLineNo">089</span>     *            if the {@link ObjectPool#getNumIdle()} is less than this then<a name="line.89"></a>
+<span class="sourceLineNo">090</span>     *            add an idle object.<a name="line.90"></a>
+<span class="sourceLineNo">091</span>     * @param period<a name="line.91"></a>
+<span class="sourceLineNo">092</span>     *            the frequency to check the number of idle objects in a pool,<a name="line.92"></a>
+<span class="sourceLineNo">093</span>     *            see {@link Timer#schedule(TimerTask, long, long)}.<a name="line.93"></a>
+<span class="sourceLineNo">094</span>     * @param &lt;T&gt; the type of objects in the pool<a name="line.94"></a>
+<span class="sourceLineNo">095</span>     * @return the {@link TimerTask} that will periodically check the pools idle<a name="line.95"></a>
+<span class="sourceLineNo">096</span>     *         object count.<a name="line.96"></a>
+<span class="sourceLineNo">097</span>     * @throws IllegalArgumentException<a name="line.97"></a>
+<span class="sourceLineNo">098</span>     *             when &lt;code&gt;pool&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt; or when<a name="line.98"></a>
+<span class="sourceLineNo">099</span>     *             &lt;code&gt;minIdle&lt;/code&gt; is negative or when &lt;code&gt;period&lt;/code&gt;<a name="line.99"></a>
+<span class="sourceLineNo">100</span>     *             isn't valid for {@link Timer#schedule(TimerTask, long, long)}<a name="line.100"></a>
+<span class="sourceLineNo">101</span>     */<a name="line.101"></a>
+<span class="sourceLineNo">102</span>    public static &lt;T&gt; TimerTask checkMinIdle(final ObjectPool&lt;T&gt; pool,<a name="line.102"></a>
+<span class="sourceLineNo">103</span>            final int minIdle, final long period)<a name="line.103"></a>
+<span class="sourceLineNo">104</span>            throws IllegalArgumentException {<a name="line.104"></a>
+<span class="sourceLineNo">105</span>        if (pool == null) {<a name="line.105"></a>
+<span class="sourceLineNo">106</span>            throw new IllegalArgumentException("keyedPool must not be null.");<a name="line.106"></a>
+<span class="sourceLineNo">107</span>        }<a name="line.107"></a>
+<span class="sourceLineNo">108</span>        if (minIdle &lt; 0) {<a name="line.108"></a>
+<span class="sourceLineNo">109</span>            throw new IllegalArgumentException("minIdle must be non-negative.");<a name="line.109"></a>
+<span class="sourceLineNo">110</span>        }<a name="line.110"></a>
+<span class="sourceLineNo">111</span>        final TimerTask task = new ObjectPoolMinIdleTimerTask&lt;T&gt;(pool, minIdle);<a name="line.111"></a>
+<span class="sourceLineNo">112</span>        getMinIdleTimer().schedule(task, 0L, period);<a name="line.112"></a>
+<span class="sourceLineNo">113</span>        return task;<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>    /**<a name="line.116"></a>
+<span class="sourceLineNo">117</span>     * Periodically check the idle object count for the key in the keyedPool. At<a name="line.117"></a>
+<span class="sourceLineNo">118</span>     * most one idle object will be added per period. If there is an exception<a name="line.118"></a>
+<span class="sourceLineNo">119</span>     * when calling {@link KeyedObjectPool#addObject(Object)} then no more<a name="line.119"></a>
+<span class="sourceLineNo">120</span>     * checks for that key will be performed.<a name="line.120"></a>
+<span class="sourceLineNo">121</span>     *<a name="line.121"></a>
+<span class="sourceLineNo">122</span>     * @param keyedPool<a name="line.122"></a>
+<span class="sourceLineNo">123</span>     *            the keyedPool to check periodically.<a name="line.123"></a>
+<span class="sourceLineNo">124</span>     * @param key<a name="line.124"></a>
+<span class="sourceLineNo">125</span>     *            the key to check the idle count of.<a name="line.125"></a>
+<span class="sourceLineNo">126</span>     * @param minIdle<a name="line.126"></a>
+<span class="sourceLineNo">127</span>     *            if the {@link KeyedObjectPool#getNumIdle(Object)} is less than<a name="line.127"></a>
+<span class="sourceLineNo">128</span>     *            this then add an idle object.<a name="line.128"></a>
+<span class="sourceLineNo">129</span>     * @param period<a name="line.129"></a>
+<span class="sourceLineNo">130</span>     *            the frequency to check the number of idle objects in a<a name="line.130"></a>
+<span class="sourceLineNo">131</span>     *            keyedPool, see {@link Timer#schedule(TimerTask, long, long)}.<a name="line.131"></a>
+<span class="sourceLineNo">132</span>     * @param &lt;K&gt; the type of the pool key<a name="line.132"></a>
+<span class="sourceLineNo">133</span>     * @param &lt;V&gt; the type of pool entries<a name="line.133"></a>
+<span class="sourceLineNo">134</span>     * @return the {@link TimerTask} that will periodically check the pools idle<a name="line.134"></a>
+<span class="sourceLineNo">135</span>     *         object count.<a name="line.135"></a>
+<span class="sourceLineNo">136</span>     * @throws IllegalArgumentException<a name="line.136"></a>
+<span class="sourceLineNo">137</span>     *             when &lt;code&gt;keyedPool&lt;/code&gt;, &lt;code&gt;key&lt;/code&gt; is<a name="line.137"></a>
+<span class="sourceLineNo">138</span>     *             &lt;code&gt;null&lt;/code&gt; or when &lt;code&gt;minIdle&lt;/code&gt; is negative or<a name="line.138"></a>
+<span class="sourceLineNo">139</span>     *             when &lt;code&gt;period&lt;/code&gt; isn't valid for<a name="line.139"></a>
+<span class="sourceLineNo">140</span>     *             {@link Timer#schedule(TimerTask, long, long)}.<a name="line.140"></a>
+<span class="sourceLineNo">141</span>     */<a name="line.141"></a>
+<span class="sourceLineNo">142</span>    public static &lt;K, V&gt; TimerTask checkMinIdle(<a name="line.142"></a>
+<span class="sourceLineNo">143</span>            final KeyedObjectPool&lt;K, V&gt; keyedPool, final K key,<a name="line.143"></a>
+<span class="sourceLineNo">144</span>            final int minIdle, final long period)<a name="line.144"></a>
+<span class="sourceLineNo">145</span>            throws IllegalArgumentException {<a name="line.145"></a>
+<span class="sourceLineNo">146</span>        if (keyedPool == null) {<a name="line.146"></a>
+<span class="sourceLineNo">147</span>            throw new IllegalArgumentException("keyedPool must not be null.");<a name="line.147"></a>
+<span class="sourceLineNo">148</span>        }<a name="line.148"></a>
+<span class="sourceLineNo">149</span>        if (key == null) {<a name="line.149"></a>
+<span class="sourceLineNo">150</span>            throw new IllegalArgumentException("key must not be null.");<a name="line.150"></a>
+<span class="sourceLineNo">151</span>        }<a name="line.151"></a>
+<span class="sourceLineNo">152</span>        if (minIdle &lt; 0) {<a name="line.152"></a>
+<span class="sourceLineNo">153</span>            throw new IllegalArgumentException("minIdle must be non-negative.");<a name="line.153"></a>
+<span class="sourceLineNo">154</span>        }<a name="line.154"></a>
+<span class="sourceLineNo">155</span>        final TimerTask task = new KeyedObjectPoolMinIdleTimerTask&lt;K, V&gt;(<a name="line.155"></a>
+<span class="sourceLineNo">156</span>                keyedPool, key, minIdle);<a name="line.156"></a>
+<span class="sourceLineNo">157</span>        getMinIdleTimer().schedule(task, 0L, period);<a name="line.157"></a>
+<span class="sourceLineNo">158</span>        return task;<a name="line.158"></a>
+<span class="sourceLineNo">159</span>    }<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>     * Periodically check the idle object count for each key in the<a name="line.162"></a>
+<span class="sourceLineNo">163</span>     * &lt;code&gt;Collection&lt;/code&gt; &lt;code&gt;keys&lt;/code&gt; in the keyedPool. At most one<a name="line.163"></a>
+<span class="sourceLineNo">164</span>     * idle object will be added per period.<a name="line.164"></a>
+<span class="sourceLineNo">165</span>     *<a name="line.165"></a>
+<span class="sourceLineNo">166</span>     * @param keyedPool<a name="line.166"></a>
+<span class="sourceLineNo">167</span>     *            the keyedPool to check periodically.<a name="line.167"></a>
+<span class="sourceLineNo">168</span>     * @param keys<a name="line.168"></a>
+<span class="sourceLineNo">169</span>     *            a collection of keys to check the idle object count.<a name="line.169"></a>
+<span class="sourceLineNo">170</span>     * @param minIdle<a name="line.170"></a>
+<span class="sourceLineNo">171</span>     *            if the {@link KeyedObjectPool#getNumIdle(Object)} is less than<a name="line.171"></a>
+<span class="sourceLineNo">172</span>     *            this then add an idle object.<a name="line.172"></a>
+<span class="sourceLineNo">173</span>     * @param period<a name="line.173"></a>
+<span class="sourceLineNo">174</span>     *            the frequency to check the number of idle objects in a<a name="line.174"></a>
+<span class="sourceLineNo">175</span>     *            keyedPool, see {@link Timer#schedule(TimerTask, long, long)}.<a name="line.175"></a>
+<span class="sourceLineNo">176</span>     * @param &lt;K&gt; the type of the pool key<a name="line.176"></a>
+<span class="sourceLineNo">177</span>     * @param &lt;V&gt; the type of pool entries<a name="line.177"></a>
+<span class="sourceLineNo">178</span>     * @return a {@link Map} of key and {@link TimerTask} pairs that will<a name="line.178"></a>
+<span class="sourceLineNo">179</span>     *         periodically check the pools idle object count.<a name="line.179"></a>
+<span class="sourceLineNo">180</span>     * @throws IllegalArgumentException<a name="line.180"></a>
+<span class="sourceLineNo">181</span>     *             when &lt;code&gt;keyedPool&lt;/code&gt;, &lt;code&gt;keys&lt;/code&gt;, or any of the<a name="line.181"></a>
+<span class="sourceLineNo">182</span>     *             values in the collection is &lt;code&gt;null&lt;/code&gt; or when<a name="line.182"></a>
+<span class="sourceLineNo">183</span>     *             &lt;code&gt;minIdle&lt;/code&gt; is negative or when &lt;code&gt;period&lt;/code&gt;<a name="line.183"></a>
+<span class="sourceLineNo">184</span>     *             isn't valid for {@link Timer#schedule(TimerTask, long, long)}<a name="line.184"></a>
+<span class="sourceLineNo">185</span>     *             .<a name="line.185"></a>
+<span class="sourceLineNo">186</span>     * @see #checkMinIdle(KeyedObjectPool, Object, int, long)<a name="line.186"></a>
+<span class="sourceLineNo">187</span>     */<a name="line.187"></a>
+<span class="sourceLineNo">188</span>    public static &lt;K, V&gt; Map&lt;K, TimerTask&gt; checkMinIdle(<a name="line.188"></a>
+<span class="sourceLineNo">189</span>            final KeyedObjectPool&lt;K, V&gt; keyedPool, final Collection&lt;K&gt; keys,<a name="line.189"></a>
+<span class="sourceLineNo">190</span>            final int minIdle, final long period)<a name="line.190"></a>
+<span class="sourceLineNo">191</span>            throws IllegalArgumentException {<a name="line.191"></a>
+<span class="sourceLineNo">192</span>        if (keys == null) {<a name="line.192"></a>
+<span class="sourceLineNo">193</span>            throw new IllegalArgumentException("keys must not be null.");<a name="line.193"></a>
+<span class="sourceLineNo">194</span>        }<a name="line.194"></a>
+<span class="sourceLineNo">195</span>        final Map&lt;K, TimerTask&gt; tasks = new HashMap&lt;K, TimerTask&gt;(keys.size());<a name="line.195"></a>
+<span class="sourceLineNo">196</span>        final Iterator&lt;K&gt; iter = keys.iterator();<a name="line.196"></a>
+<span class="sourceLineNo">197</span>        while (iter.hasNext()) {<a name="line.197"></a>
+<span class="sourceLineNo">198</span>            final K key = iter.next();<a name="line.198"></a>
+<span class="sourceLineNo">199</span>            final TimerTask task = checkMinIdle(keyedPool, key, minIdle, period);<a name="line.199"></a>
+<span class="sourceLineNo">200</span>            tasks.put(key, task);<a name="line.200"></a>
+<span class="sourceLineNo">201</span>        }<a name="line.201"></a>
+<span class="sourceLineNo">202</span>        return tasks;<a name="line.202"></a>
+<span class="sourceLineNo">203</span>    }<a name="line.203"></a>
+<span class="sourceLineNo">204</span><a name="line.204"></a>
+<span class="sourceLineNo">205</span>    /**<a name="line.205"></a>
+<span class="sourceLineNo">206</span>     * Call &lt;code&gt;addObject()&lt;/code&gt; on &lt;code&gt;pool&lt;/code&gt; &lt;code&gt;count&lt;/code&gt;<a name="line.206"></a>
+<span class="sourceLineNo">207</span>     * number of times.<a name="line.207"></a>
+<span class="sourceLineNo">208</span>     *<a name="line.208"></a>
+<span class="sourceLineNo">209</span>     * @param pool<a name="line.209"></a>
+<span class="sourceLineNo">210</span>     *            the pool to prefill.<a name="line.210"></a>
+<span class="sourceLineNo">211</span>     * @param count<a name="line.211"></a>
+<span class="sourceLineNo">212</span>     *            the number of idle objects to add.<a name="line.212"></a>
+<span class="sourceLineNo">213</span>     * @param &lt;T&gt; the type of objects in the pool<a name="line.213"></a>
+<span class="sourceLineNo">214</span>     * @throws Exception<a name="line.214"></a>
+<span class="sourceLineNo">215</span>     *             when {@link ObjectPool#addObject()} fails.<a name="line.215"></a>
+<span class="sourceLineNo">216</span>     * @throws IllegalArgumentException<a name="line.216"></a>
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[... 981 lines stripped ...]


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