Added: websites/production/commons/content/proper/commons-pool/api-2.3/src-html/org/apache/commons/pool2/impl/GenericKeyedObjectPool.html ============================================================================== --- websites/production/commons/content/proper/commons-pool/api-2.3/src-html/org/apache/commons/pool2/impl/GenericKeyedObjectPool.html (added) +++ websites/production/commons/content/proper/commons-pool/api-2.3/src-html/org/apache/commons/pool2/impl/GenericKeyedObjectPool.html Wed Dec 31 14:00:19 2014 @@ -0,0 +1,1611 @@ +<!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.impl;<a name="line.17"></a> +<span class="sourceLineNo">018</span><a name="line.18"></a> +<span class="sourceLineNo">019</span>import java.util.ArrayList;<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.List;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import java.util.Map;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import java.util.Map.Entry;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import java.util.NoSuchElementException;<a name="line.25"></a> +<span class="sourceLineNo">026</span>import java.util.TreeMap;<a name="line.26"></a> +<span class="sourceLineNo">027</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import java.util.concurrent.TimeUnit;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import java.util.concurrent.locks.Lock;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import java.util.concurrent.locks.ReadWriteLock;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import java.util.concurrent.locks.ReentrantReadWriteLock;<a name="line.33"></a> +<span class="sourceLineNo">034</span><a name="line.34"></a> +<span class="sourceLineNo">035</span>import org.apache.commons.pool2.KeyedObjectPool;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import org.apache.commons.pool2.KeyedPooledObjectFactory;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import org.apache.commons.pool2.PoolUtils;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import org.apache.commons.pool2.PooledObject;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import org.apache.commons.pool2.PooledObjectState;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import org.apache.commons.pool2.SwallowedExceptionListener;<a name="line.40"></a> +<span class="sourceLineNo">041</span><a name="line.41"></a> +<span class="sourceLineNo">042</span>/**<a name="line.42"></a> +<span class="sourceLineNo">043</span> * A configurable <code>KeyedObjectPool</code> implementation.<a name="line.43"></a> +<span class="sourceLineNo">044</span> * <p><a name="line.44"></a> +<span class="sourceLineNo">045</span> * When coupled with the appropriate {@link KeyedPooledObjectFactory},<a name="line.45"></a> +<span class="sourceLineNo">046</span> * <code>GenericKeyedObjectPool</code> provides robust pooling functionality for<a name="line.46"></a> +<span class="sourceLineNo">047</span> * keyed objects. A <code>GenericKeyedObjectPool</code> can be viewed as a map<a name="line.47"></a> +<span class="sourceLineNo">048</span> * of sub-pools, keyed on the (unique) key values provided to the<a name="line.48"></a> +<span class="sourceLineNo">049</span> * {@link #preparePool preparePool}, {@link #addObject addObject} or<a name="line.49"></a> +<span class="sourceLineNo">050</span> * {@link #borrowObject borrowObject} methods. Each time a new key value is<a name="line.50"></a> +<span class="sourceLineNo">051</span> * provided to one of these methods, a sub-new pool is created under the given<a name="line.51"></a> +<span class="sourceLineNo">052</span> * key to be managed by the containing <code>GenericKeyedObjectPool.</code><a name="line.52"></a> +<span class="sourceLineNo">053</span> * <p><a name="line.53"></a> +<span class="sourceLineNo">054</span> * Optionally, one may configure the pool to examine and possibly evict objects<a name="line.54"></a> +<span class="sourceLineNo">055</span> * as they sit idle in the pool and to ensure that a minimum number of idle<a name="line.55"></a> +<span class="sourceLineNo">056</span> * objects is maintained for each key. This is performed by an "idle object<a name="line.56"></a> +<span class="sourceLineNo">057</span> * eviction" thread, which runs asynchronously. Caution should be used when<a name="line.57"></a> +<span class="sourceLineNo">058</span> * configuring this optional feature. Eviction runs contend with client threads<a name="line.58"></a> +<span class="sourceLineNo">059</span> * for access to objects in the pool, so if they run too frequently performance<a name="line.59"></a> +<span class="sourceLineNo">060</span> * issues may result.<a name="line.60"></a> +<span class="sourceLineNo">061</span> * <p><a name="line.61"></a> +<span class="sourceLineNo">062</span> * Implementation note: To prevent possible deadlocks, care has been taken to<a name="line.62"></a> +<span class="sourceLineNo">063</span> * ensure that no call to a factory method will occur within a synchronization<a name="line.63"></a> +<span class="sourceLineNo">064</span> * block. See POOL-125 and DBCP-44 for more information.<a name="line.64"></a> +<span class="sourceLineNo">065</span> * <p><a name="line.65"></a> +<span class="sourceLineNo">066</span> * This class is intended to be thread-safe.<a name="line.66"></a> +<span class="sourceLineNo">067</span> *<a name="line.67"></a> +<span class="sourceLineNo">068</span> * @see GenericObjectPool<a name="line.68"></a> +<span class="sourceLineNo">069</span> *<a name="line.69"></a> +<span class="sourceLineNo">070</span> * @param <K> The type of keys maintained by this pool.<a name="line.70"></a> +<span class="sourceLineNo">071</span> * @param <T> Type of element pooled in this pool.<a name="line.71"></a> +<span class="sourceLineNo">072</span> *<a name="line.72"></a> +<span class="sourceLineNo">073</span> * @version $Revision: 1627011 $<a name="line.73"></a> +<span class="sourceLineNo">074</span> *<a name="line.74"></a> +<span class="sourceLineNo">075</span> * @since 2.0<a name="line.75"></a> +<span class="sourceLineNo">076</span> */<a name="line.76"></a> +<span class="sourceLineNo">077</span>public class GenericKeyedObjectPool<K,T> extends BaseGenericObjectPool<T><a name="line.77"></a> +<span class="sourceLineNo">078</span> implements KeyedObjectPool<K,T>, GenericKeyedObjectPoolMXBean<K> {<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> * Create a new <code>GenericKeyedObjectPool</code> using defaults from<a name="line.81"></a> +<span class="sourceLineNo">082</span> * {@link GenericKeyedObjectPoolConfig}.<a name="line.82"></a> +<span class="sourceLineNo">083</span> * @param factory the factory to be used to create entries<a name="line.83"></a> +<span class="sourceLineNo">084</span> */<a name="line.84"></a> +<span class="sourceLineNo">085</span> public GenericKeyedObjectPool(KeyedPooledObjectFactory<K,T> factory) {<a name="line.85"></a> +<span class="sourceLineNo">086</span> this(factory, new GenericKeyedObjectPoolConfig());<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> /**<a name="line.89"></a> +<span class="sourceLineNo">090</span> * Create a new <code>GenericKeyedObjectPool</code> using a specific<a name="line.90"></a> +<span class="sourceLineNo">091</span> * configuration.<a name="line.91"></a> +<span class="sourceLineNo">092</span> *<a name="line.92"></a> +<span class="sourceLineNo">093</span> * @param factory the factory to be used to create entries<a name="line.93"></a> +<span class="sourceLineNo">094</span> * @param config The configuration to use for this pool instance. The<a name="line.94"></a> +<span class="sourceLineNo">095</span> * configuration is used by value. Subsequent changes to<a name="line.95"></a> +<span class="sourceLineNo">096</span> * the configuration object will not be reflected in the<a name="line.96"></a> +<span class="sourceLineNo">097</span> * pool.<a name="line.97"></a> +<span class="sourceLineNo">098</span> */<a name="line.98"></a> +<span class="sourceLineNo">099</span> public GenericKeyedObjectPool(KeyedPooledObjectFactory<K,T> factory,<a name="line.99"></a> +<span class="sourceLineNo">100</span> GenericKeyedObjectPoolConfig config) {<a name="line.100"></a> +<span class="sourceLineNo">101</span><a name="line.101"></a> +<span class="sourceLineNo">102</span> super(config, ONAME_BASE, config.getJmxNamePrefix());<a name="line.102"></a> +<span class="sourceLineNo">103</span><a name="line.103"></a> +<span class="sourceLineNo">104</span> if (factory == null) {<a name="line.104"></a> +<span class="sourceLineNo">105</span> jmxUnregister(); // tidy up<a name="line.105"></a> +<span class="sourceLineNo">106</span> throw new IllegalArgumentException("factory may not be null");<a name="line.106"></a> +<span class="sourceLineNo">107</span> }<a name="line.107"></a> +<span class="sourceLineNo">108</span> this.factory = factory;<a name="line.108"></a> +<span class="sourceLineNo">109</span> this.fairness = config.getFairness();<a name="line.109"></a> +<span class="sourceLineNo">110</span><a name="line.110"></a> +<span class="sourceLineNo">111</span> setConfig(config);<a name="line.111"></a> +<span class="sourceLineNo">112</span><a name="line.112"></a> +<span class="sourceLineNo">113</span> startEvictor(getTimeBetweenEvictionRunsMillis());<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> * Returns the limit on the number of object instances allocated by the pool<a name="line.117"></a> +<span class="sourceLineNo">118</span> * (checked out or idle), per key. When the limit is reached, the sub-pool<a name="line.118"></a> +<span class="sourceLineNo">119</span> * is said to be exhausted. A negative value indicates no limit.<a name="line.119"></a> +<span class="sourceLineNo">120</span> *<a name="line.120"></a> +<span class="sourceLineNo">121</span> * @return the limit on the number of active instances per key<a name="line.121"></a> +<span class="sourceLineNo">122</span> *<a name="line.122"></a> +<span class="sourceLineNo">123</span> * @see #setMaxTotalPerKey<a name="line.123"></a> +<span class="sourceLineNo">124</span> */<a name="line.124"></a> +<span class="sourceLineNo">125</span> @Override<a name="line.125"></a> +<span class="sourceLineNo">126</span> public int getMaxTotalPerKey() {<a name="line.126"></a> +<span class="sourceLineNo">127</span> return maxTotalPerKey;<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> /**<a name="line.130"></a> +<span class="sourceLineNo">131</span> * Sets the limit on the number of object instances allocated by the pool<a name="line.131"></a> +<span class="sourceLineNo">132</span> * (checked out or idle), per key. When the limit is reached, the sub-pool<a name="line.132"></a> +<span class="sourceLineNo">133</span> * is said to be exhausted. A negative value indicates no limit.<a name="line.133"></a> +<span class="sourceLineNo">134</span> *<a name="line.134"></a> +<span class="sourceLineNo">135</span> * @param maxTotalPerKey the limit on the number of active instances per key<a name="line.135"></a> +<span class="sourceLineNo">136</span> *<a name="line.136"></a> +<span class="sourceLineNo">137</span> * @see #getMaxTotalPerKey<a name="line.137"></a> +<span class="sourceLineNo">138</span> */<a name="line.138"></a> +<span class="sourceLineNo">139</span> public void setMaxTotalPerKey(int maxTotalPerKey) {<a name="line.139"></a> +<span class="sourceLineNo">140</span> this.maxTotalPerKey = maxTotalPerKey;<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> /**<a name="line.144"></a> +<span class="sourceLineNo">145</span> * Returns the cap on the number of "idle" instances per key in the pool.<a name="line.145"></a> +<span class="sourceLineNo">146</span> * If maxIdlePerKey is set too low on heavily loaded systems it is possible<a name="line.146"></a> +<span class="sourceLineNo">147</span> * you will see objects being destroyed and almost immediately new objects<a name="line.147"></a> +<span class="sourceLineNo">148</span> * being created. This is a result of the active threads momentarily<a name="line.148"></a> +<span class="sourceLineNo">149</span> * returning objects faster than they are requesting them them, causing the<a name="line.149"></a> +<span class="sourceLineNo">150</span> * number of idle objects to rise above maxIdlePerKey. The best value for<a name="line.150"></a> +<span class="sourceLineNo">151</span> * maxIdlePerKey for heavily loaded system will vary but the default is a<a name="line.151"></a> +<span class="sourceLineNo">152</span> * good starting point.<a name="line.152"></a> +<span class="sourceLineNo">153</span> *<a name="line.153"></a> +<span class="sourceLineNo">154</span> * @return the maximum number of "idle" instances that can be held in a<a name="line.154"></a> +<span class="sourceLineNo">155</span> * given keyed sub-pool or a negative value if there is no limit<a name="line.155"></a> +<span class="sourceLineNo">156</span> *<a name="line.156"></a> +<span class="sourceLineNo">157</span> * @see #setMaxIdlePerKey<a name="line.157"></a> +<span class="sourceLineNo">158</span> */<a name="line.158"></a> +<span class="sourceLineNo">159</span> @Override<a name="line.159"></a> +<span class="sourceLineNo">160</span> public int getMaxIdlePerKey() {<a name="line.160"></a> +<span class="sourceLineNo">161</span> return maxIdlePerKey;<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> /**<a name="line.164"></a> +<span class="sourceLineNo">165</span> * Sets the cap on the number of "idle" instances per key in the pool.<a name="line.165"></a> +<span class="sourceLineNo">166</span> * If maxIdlePerKey is set too low on heavily loaded systems it is possible<a name="line.166"></a> +<span class="sourceLineNo">167</span> * you will see objects being destroyed and almost immediately new objects<a name="line.167"></a> +<span class="sourceLineNo">168</span> * being created. This is a result of the active threads momentarily<a name="line.168"></a> +<span class="sourceLineNo">169</span> * returning objects faster than they are requesting them them, causing the<a name="line.169"></a> +<span class="sourceLineNo">170</span> * number of idle objects to rise above maxIdlePerKey. The best value for<a name="line.170"></a> +<span class="sourceLineNo">171</span> * maxIdlePerKey for heavily loaded system will vary but the default is a<a name="line.171"></a> +<span class="sourceLineNo">172</span> * good starting point.<a name="line.172"></a> +<span class="sourceLineNo">173</span> *<a name="line.173"></a> +<span class="sourceLineNo">174</span> * @param maxIdlePerKey the maximum number of "idle" instances that can be<a name="line.174"></a> +<span class="sourceLineNo">175</span> * held in a given keyed sub-pool. Use a negative value<a name="line.175"></a> +<span class="sourceLineNo">176</span> * for no limit<a name="line.176"></a> +<span class="sourceLineNo">177</span> *<a name="line.177"></a> +<span class="sourceLineNo">178</span> * @see #getMaxIdlePerKey<a name="line.178"></a> +<span class="sourceLineNo">179</span> */<a name="line.179"></a> +<span class="sourceLineNo">180</span> public void setMaxIdlePerKey(int maxIdlePerKey) {<a name="line.180"></a> +<span class="sourceLineNo">181</span> this.maxIdlePerKey = maxIdlePerKey;<a name="line.181"></a> +<span class="sourceLineNo">182</span> }<a name="line.182"></a> +<span class="sourceLineNo">183</span><a name="line.183"></a> +<span class="sourceLineNo">184</span> /**<a name="line.184"></a> +<span class="sourceLineNo">185</span> * Sets the target for the minimum number of idle objects to maintain in<a name="line.185"></a> +<span class="sourceLineNo">186</span> * each of the keyed sub-pools. This setting only has an effect if it is<a name="line.186"></a> +<span class="sourceLineNo">187</span> * positive and {@link #getTimeBetweenEvictionRunsMillis()} is greater than<a name="line.187"></a> +<span class="sourceLineNo">188</span> * zero. If this is the case, an attempt is made to ensure that each<a name="line.188"></a> +<span class="sourceLineNo">189</span> * sub-pool has the required minimum number of instances during idle object<a name="line.189"></a> +<span class="sourceLineNo">190</span> * eviction runs.<a name="line.190"></a> +<span class="sourceLineNo">191</span> * <p><a name="line.191"></a> +<span class="sourceLineNo">192</span> * If the configured value of minIdlePerKey is greater than the configured<a name="line.192"></a> +<span class="sourceLineNo">193</span> * value for maxIdlePerKey then the value of maxIdlePerKey will be used<a name="line.193"></a> +<span class="sourceLineNo">194</span> * instead.<a name="line.194"></a> +<span class="sourceLineNo">195</span> *<a name="line.195"></a> +<span class="sourceLineNo">196</span> * @param minIdlePerKey The minimum size of the each keyed pool<a name="line.196"></a> +<span class="sourceLineNo">197</span> *<a name="line.197"></a> +<span class="sourceLineNo">198</span> * @see #getMinIdlePerKey<a name="line.198"></a> +<span class="sourceLineNo">199</span> * @see #getMaxIdlePerKey()<a name="line.199"></a> +<span class="sourceLineNo">200</span> * @see #setTimeBetweenEvictionRunsMillis<a name="line.200"></a> +<span class="sourceLineNo">201</span> */<a name="line.201"></a> +<span class="sourceLineNo">202</span> public void setMinIdlePerKey(int minIdlePerKey) {<a name="line.202"></a> +<span class="sourceLineNo">203</span> this.minIdlePerKey = minIdlePerKey;<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> /**<a name="line.206"></a> +<span class="sourceLineNo">207</span> * Returns the target for the minimum number of idle objects to maintain in<a name="line.207"></a> +<span class="sourceLineNo">208</span> * each of the keyed sub-pools. This setting only has an effect if it is<a name="line.208"></a> +<span class="sourceLineNo">209</span> * positive and {@link #getTimeBetweenEvictionRunsMillis()} is greater than<a name="line.209"></a> +<span class="sourceLineNo">210</span> * zero. If this is the case, an attempt is made to ensure that each<a name="line.210"></a> +<span class="sourceLineNo">211</span> * sub-pool has the required minimum number of instances during idle object<a name="line.211"></a> +<span class="sourceLineNo">212</span> * eviction runs.<a name="line.212"></a> +<span class="sourceLineNo">213</span> * <p><a name="line.213"></a> +<span class="sourceLineNo">214</span> * If the configured value of minIdlePerKey is greater than the configured<a name="line.214"></a> +<span class="sourceLineNo">215</span> * value for maxIdlePerKey then the value of maxIdlePerKey will be used<a name="line.215"></a> +<span class="sourceLineNo">216</span> * instead.<a name="line.216"></a> +<span class="sourceLineNo">217</span> *<a name="line.217"></a> +<span class="sourceLineNo">218</span> * @return minimum size of the each keyed pool<a name="line.218"></a> +<span class="sourceLineNo">219</span> *<a name="line.219"></a> +<span class="sourceLineNo">220</span> * @see #setTimeBetweenEvictionRunsMillis<a name="line.220"></a> +<span class="sourceLineNo">221</span> */<a name="line.221"></a> +<span class="sourceLineNo">222</span> @Override<a name="line.222"></a> +<span class="sourceLineNo">223</span> public int getMinIdlePerKey() {<a name="line.223"></a> +<span class="sourceLineNo">224</span> int maxIdlePerKeySave = getMaxIdlePerKey();<a name="line.224"></a> +<span class="sourceLineNo">225</span> if (this.minIdlePerKey > maxIdlePerKeySave) {<a name="line.225"></a> +<span class="sourceLineNo">226</span> return maxIdlePerKeySave;<a name="line.226"></a> +<span class="sourceLineNo">227</span> } else {<a name="line.227"></a> +<span class="sourceLineNo">228</span> return minIdlePerKey;<a name="line.228"></a> +<span class="sourceLineNo">229</span> }<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> * Sets the configuration.<a name="line.233"></a> +<span class="sourceLineNo">234</span> *<a name="line.234"></a> +<span class="sourceLineNo">235</span> * @param conf the new configuration to use. This is used by value.<a name="line.235"></a> +<span class="sourceLineNo">236</span> *<a name="line.236"></a> +<span class="sourceLineNo">237</span> * @see GenericKeyedObjectPoolConfig<a name="line.237"></a> +<span class="sourceLineNo">238</span> */<a name="line.238"></a> +<span class="sourceLineNo">239</span> public void setConfig(GenericKeyedObjectPoolConfig conf) {<a name="line.239"></a> +<span class="sourceLineNo">240</span> setLifo(conf.getLifo());<a name="line.240"></a> +<span class="sourceLineNo">241</span> setMaxIdlePerKey(conf.getMaxIdlePerKey());<a name="line.241"></a> +<span class="sourceLineNo">242</span> setMaxTotalPerKey(conf.getMaxTotalPerKey());<a name="line.242"></a> +<span class="sourceLineNo">243</span> setMaxTotal(conf.getMaxTotal());<a name="line.243"></a> +<span class="sourceLineNo">244</span> setMinIdlePerKey(conf.getMinIdlePerKey());<a name="line.244"></a> +<span class="sourceLineNo">245</span> setMaxWaitMillis(conf.getMaxWaitMillis());<a name="line.245"></a> 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name="line.331"></a> +<span class="sourceLineNo">332</span> * returned because the pool is exhausted.<a name="line.332"></a> +<span class="sourceLineNo">333</span> *<a name="line.333"></a> +<span class="sourceLineNo">334</span> * @throws Exception if a keyed object instance cannot be returned due to an<a name="line.334"></a> +<span class="sourceLineNo">335</span> * error<a name="line.335"></a> +<span class="sourceLineNo">336</span> */<a name="line.336"></a> +<span class="sourceLineNo">337</span> public T borrowObject(K key, long borrowMaxWaitMillis) throws Exception {<a name="line.337"></a> +<span class="sourceLineNo">338</span> assertOpen();<a name="line.338"></a> +<span class="sourceLineNo">339</span><a name="line.339"></a> +<span class="sourceLineNo">340</span> PooledObject<T> p = null;<a name="line.340"></a> +<span class="sourceLineNo">341</span><a name="line.341"></a> +<span class="sourceLineNo">342</span> // Get local copy of current config so it is consistent for entire<a name="line.342"></a> +<span class="sourceLineNo">343</span> // method execution<a name="line.343"></a> +<span class="sourceLineNo">344</span> boolean blockWhenExhausted = getBlockWhenExhausted();<a name="line.344"></a> +<span class="sourceLineNo">345</span><a name="line.345"></a> +<span class="sourceLineNo">346</span> boolean create;<a name="line.346"></a> +<span class="sourceLineNo">347</span> long waitTime = System.currentTimeMillis();<a name="line.347"></a> +<span class="sourceLineNo">348</span> ObjectDeque<T> objectDeque = register(key);<a name="line.348"></a> +<span class="sourceLineNo">349</span><a name="line.349"></a> +<span class="sourceLineNo">350</span> try {<a name="line.350"></a> +<span class="sourceLineNo">351</span> while (p == null) {<a name="line.351"></a> +<span class="sourceLineNo">352</span> create = false;<a name="line.352"></a> +<span class="sourceLineNo">353</span> if (blockWhenExhausted) {<a name="line.353"></a> +<span class="sourceLineNo">354</span> p = 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class="sourceLineNo">366</span> borrowMaxWaitMillis, TimeUnit.MILLISECONDS);<a name="line.366"></a> +<span class="sourceLineNo">367</span> }<a name="line.367"></a> +<span class="sourceLineNo">368</span> }<a name="line.368"></a> +<span class="sourceLineNo">369</span> if (p == null) {<a name="line.369"></a> +<span class="sourceLineNo">370</span> throw new NoSuchElementException(<a name="line.370"></a> +<span class="sourceLineNo">371</span> "Timeout waiting for idle object");<a name="line.371"></a> +<span class="sourceLineNo">372</span> }<a name="line.372"></a> +<span class="sourceLineNo">373</span> if (!p.allocate()) {<a name="line.373"></a> +<span class="sourceLineNo">374</span> p = null;<a name="line.374"></a> +<span class="sourceLineNo">375</span> }<a name="line.375"></a> +<span class="sourceLineNo">376</span> } else {<a name="line.376"></a> +<span class="sourceLineNo">377</span> p = objectDeque.getIdleObjects().pollFirst();<a name="line.377"></a> +<span 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(Throwable t) {<a name="line.414"></a> +<span class="sourceLineNo">415</span> PoolUtils.checkRethrow(t);<a name="line.415"></a> +<span class="sourceLineNo">416</span> validationThrowable = t;<a name="line.416"></a> +<span class="sourceLineNo">417</span> }<a name="line.417"></a> +<span class="sourceLineNo">418</span> if (!validate) {<a name="line.418"></a> +<span class="sourceLineNo">419</span> try {<a name="line.419"></a> +<span class="sourceLineNo">420</span> destroy(key, p, true);<a name="line.420"></a> +<span class="sourceLineNo">421</span> destroyedByBorrowValidationCount.incrementAndGet();<a name="line.421"></a> +<span class="sourceLineNo">422</span> } catch (Exception e) {<a name="line.422"></a> +<span class="sourceLineNo">423</span> // Ignore - validation failure is more important<a name="line.423"></a> +<span class="sourceLineNo">424</span> }<a name="line.424"></a> +<span class="sourceLineNo">425</span> p = null;<a name="line.425"></a> +<span class="sourceLineNo">426</span> if (create) {<a name="line.426"></a> +<span class="sourceLineNo">427</span> NoSuchElementException nsee = new NoSuchElementException(<a name="line.427"></a> +<span class="sourceLineNo">428</span> "Unable to validate object");<a name="line.428"></a> +<span class="sourceLineNo">429</span> nsee.initCause(validationThrowable);<a name="line.429"></a> +<span class="sourceLineNo">430</span> throw nsee;<a name="line.430"></a> +<span class="sourceLineNo">431</span> }<a name="line.431"></a> +<span class="sourceLineNo">432</span> }<a name="line.432"></a> +<span class="sourceLineNo">433</span> }<a name="line.433"></a> +<span class="sourceLineNo">434</span> }<a name="line.434"></a> +<span class="sourceLineNo">435</span> }<a name="line.435"></a> +<span class="sourceLineNo">436</span> } finally {<a name="line.436"></a> +<span class="sourceLineNo">437</span> deregister(key);<a name="line.437"></a> +<span class="sourceLineNo">438</span> }<a name="line.438"></a> +<span class="sourceLineNo">439</span><a 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Not worth locking the keys while this loop completes.<a name="line.746"></a> +<span class="sourceLineNo">747</span> if (queue != null) {<a name="line.747"></a> +<span class="sourceLineNo">748</span> final LinkedBlockingDeque<PooledObject<T>> idleObjects =<a name="line.748"></a> +<span class="sourceLineNo">749</span> queue.getIdleObjects();<a name="line.749"></a> +<span class="sourceLineNo">750</span> for (PooledObject<T> p : idleObjects) {<a name="line.750"></a> +<span class="sourceLineNo">751</span> // each item into the map using the PooledObject object as the<a name="line.751"></a> +<span class="sourceLineNo">752</span> // key. 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In the map, each key is the<a name="line.766"></a> +<span class="sourceLineNo">767</span> // PooledObject because it has the ordering with the timestamp<a name="line.767"></a> +<span class="sourceLineNo">768</span> // value. Each value that the key references is the key of the<a name="line.768"></a> +<span class="sourceLineNo">769</span> // list it belongs to.<a name="line.769"></a> +<span class="sourceLineNo">770</span> K key = entry.getValue();<a name="line.770"></a> +<span class="sourceLineNo">771</span> PooledObject<T> p = entry.getKey();<a name="line.771"></a> +<span class="sourceLineNo">772</span> // Assume the destruction succeeds<a name="line.772"></a> +<span class="sourceLineNo">773</span> boolean destroyed = true;<a name="line.773"></a> +<span class="sourceLineNo">774</span> try {<a name="line.774"></a> +<span class="sourceLineNo">775</span> destroyed = destroy(key, p, false);<a name="line.775"></a> +<span class="sourceLineNo">776</span> } catch (Exception e) {<a name="line.776"></a> +<span class="sourceLineNo">777</span> swallowException(e);<a name="line.777"></a> +<span class="sourceLineNo">778</span> }<a name="line.778"></a> +<span class="sourceLineNo">779</span> if (destroyed) {<a name="line.779"></a> +<span class="sourceLineNo">780</span> itemsToRemove--;<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 name="line.784"></a> +<span class="sourceLineNo">785</span> /**<a name="line.785"></a> +<span class="sourceLineNo">786</span> * Attempt to create one new instance to serve from the most heavily<a name="line.786"></a> +<span class="sourceLineNo">787</span> * loaded pool that can add a new instance.<a name="line.787"></a> +<span class="sourceLineNo">788</span> *<a name="line.788"></a> +<span class="sourceLineNo">789</span> * This method exists to ensure liveness in the pool when threads are<a name="line.789"></a> +<span class="sourceLineNo">790</span> * parked waiting and capacity to create instances under the requested keys<a name="line.790"></a> +<span class="sourceLineNo">791</span> * subsequently becomes available.<a name="line.791"></a> +<span class="sourceLineNo">792</span> *<a name="line.792"></a> +<span class="sourceLineNo">793</span> * This method is not guaranteed to create an instance and its selection<a name="line.793"></a> +<span class="sourceLineNo">794</span> * of the most loaded pool that can create an instance may not always be<a name="line.794"></a> +<span class="sourceLineNo">795</span> * correct, since it does not lock the pool and instances may be created,<a name="line.795"></a> +<span class="sourceLineNo">796</span> * borrowed, returned or destroyed by other threads while it is executing.<a name="line.796"></a> +<span class="sourceLineNo">797</span> */<a name="line.797"></a> +<span class="sourceLineNo">798</span> private void reuseCapacity() {<a name="line.798"></a> +<span class="sourceLineNo">799</span> final int maxTotalPerKeySave = getMaxTotalPerKey();<a name="line.799"></a> +<span class="sourceLineNo">800</span><a name="line.800"></a> +<span class="sourceLineNo">801</span> // Find the most loaded pool that could take a new instance<a name="line.801"></a> +<span class="sourceLineNo">802</span> int maxQueueLength = 0;<a name="line.802"></a> +<span class="sourceLineNo">803</span> LinkedBlockingDeque<PooledObject<T>> mostLoaded = null;<a name="line.803"></a> +<span class="sourceLineNo">804</span> K loadedKey = null;<a name="line.804"></a> +<span class="sourceLineNo">805</span> for (K k : poolMap.keySet()) {<a name="line.805"></a> +<span class="sourceLineNo">806</span> final ObjectDeque<T> deque = poolMap.get(k);<a name="line.806"></a> +<span class="sourceLineNo">807</span> if (deque != null) {<a name="line.807"></a> +<span class="sourceLineNo">808</span> final LinkedBlockingDeque<PooledObject<T>> pool = deque.getIdleObjects();<a name="line.808"></a> +<span class="sourceLineNo">809</span> final int queueLength = pool.getTakeQueueLength();<a name="line.809"></a> +<span class="sourceLineNo">810</span> if (getNumActive(k) < maxTotalPerKeySave && queueLength > maxQueueLength) {<a name="line.810"></a> +<span class="sourceLineNo">811</span> maxQueueLength = queueLength;<a name="line.811"></a> +<span class="sourceLineNo">812</span> mostLoaded = pool;<a name="line.812"></a> +<span class="sourceLineNo">813</span> loadedKey = k;<a name="line.813"></a> +<span class="sourceLineNo">814</span> }<a name="line.814"></a> +<span class="sourceLineNo">815</span> }<a name="line.815"></a> +<span class="sourceLineNo">816</span> }<a name="line.816"></a> +<span class="sourceLineNo">817</span><a name="line.817"></a> +<span class="sourceLineNo">818</span> // Attempt to add an instance to the most loaded pool<a name="line.818"></a> +<span class="sourceLineNo">819</span> if (mostLoaded != null) {<a name="line.819"></a> +<span class="sourceLineNo">820</span> register(loadedKey);<a name="line.820"></a> +<span class="sourceLineNo">821</span> try {<a name="line.821"></a> +<span class="sourceLineNo">822</span> PooledObject<T> p = create(loadedKey);<a name="line.822"></a> +<span class="sourceLineNo">823</span> if (p != null) {<a name="line.823"></a> +<span class="sourceLineNo">824</span> addIdleObject(loadedKey, p);<a name="line.824"></a> +<span class="sourceLineNo">825</span> }<a name="line.825"></a> +<span class="sourceLineNo">826</span> } catch (Exception e) {<a name="line.826"></a> +<span class="sourceLineNo">827</span> swallowException(e);<a name="line.827"></a> +<span class="sourceLineNo">828</span> } finally {<a name="line.828"></a> +<span class="sourceLineNo">829</span> deregister(loadedKey);<a name="line.829"></a> +<span class="sourceLineNo">830</span> }<a name="line.830"></a> +<span class="sourceLineNo">831</span> }<a name="line.831"></a> +<span class="sourceLineNo">832</span> }<a name="line.832"></a> +<span class="sourceLineNo">833</span><a name="line.833"></a> +<span class="sourceLineNo">834</span> /**<a name="line.834"></a> +<span class="sourceLineNo">835</span> * Checks to see if there are any threads currently waiting to borrow<a name="line.835"></a> +<span class="sourceLineNo">836</span> * objects but are blocked waiting for more objects to become available.<a name="line.836"></a> +<span class="sourceLineNo">837</span> *<a name="line.837"></a> +<span class="sourceLineNo">838</span> * @return {@code true} if there is at least one thread waiting otherwise<a name="line.838"></a> +<span class="sourceLineNo">839</span> * {@code false}<a name="line.839"></a> +<span class="sourceLineNo">840</span> */<a name="line.840"></a> +<span class="sourceLineNo">841</span> private boolean hasBorrowWaiters() {<a name="line.841"></a> +<span class="sourceLineNo">842</span> for (K k : poolMap.keySet()) {<a name="line.842"></a> +<span class="sourceLineNo">843</span> final ObjectDeque<T> deque = poolMap.get(k);<a name="line.843"></a> +<span class="sourceLineNo">844</span> if (deque != null) {<a name="line.844"></a> +<span class="sourceLineNo">845</span> final LinkedBlockingDeque<PooledObject<T>> pool =<a name="line.845"></a> +<span class="sourceLineNo">846</span> deque.getIdleObjects();<a name="line.846"></a> +<span class="sourceLineNo">847</span> if(pool.hasTakeWaiters()) {<a name="line.847"></a> +<span class="sourceLineNo">848</span> return true;<a name="line.848"></a> +<span class="sourceLineNo">849</span> }<a name="line.849"></a> +<span class="sourceLineNo">850</span> }<a name="line.850"></a> +<span class="sourceLineNo">851</span> }<a name="line.851"></a> +<span class="sourceLineNo">852</span> return false;<a name="line.852"></a> +<span class="sourceLineNo">853</span> }<a name="line.853"></a> +<span class="sourceLineNo">854</span><a name="line.854"></a> +<span class="sourceLineNo">855</span><a name="line.855"></a> +<span class="sourceLineNo">856</span> /**<a name="line.856"></a> +<span class="sourceLineNo">857</span> * {@inheritDoc}<a name="line.857"></a> +<span class="sourceLineNo">858</span> * <p><a name="line.858"></a> +<span class="sourceLineNo">859</span> * Successive activations of this method examine objects in keyed sub-pools<a name="line.859"></a> +<span class="sourceLineNo">860</span> * in sequence, cycling through the keys and examining objects in<a name="line.860"></a> +<span class="sourceLineNo">861</span> * oldest-to-youngest order within the keyed sub-pools.<a name="line.861"></a> +<span class="sourceLineNo">862</span> */<a name="line.862"></a> +<span class="sourceLineNo">863</span> @Override<a name="line.863"></a> +<span class="sourceLineNo">864</span> public void evict() throws Exception {<a name="line.864"></a> +<span class="sourceLineNo">865</span> assertOpen();<a name="line.865"></a> +<span class="sourceLineNo">866</span><a name="line.866"></a> +<span class="sourceLineNo">867</span> if (getNumIdle() == 0) {<a name="line.867"></a> +<span class="sourceLineNo">868</span> return;<a name="line.868"></a> +<span class="sourceLineNo">869</span> }<a name="line.869"></a> +<span class="sourceLineNo">870</span><a name="line.870"></a> +<span class="sourceLineNo">871</span> PooledObject<T> underTest = null;<a name="line.871"></a> +<span class="sourceLineNo">872</span> EvictionPolicy<T> evictionPolicy = getEvictionPolicy();<a name="line.872"></a> +<span class="sourceLineNo">873</span><a name="line.873"></a> +<span class="sourceLineNo">874</span> synchronized (evictionLock) {<a name="line.874"></a> +<span class="sourceLineNo">875</span> EvictionConfig evictionConfig = new EvictionConfig(<a name="line.875"></a> +<span class="sourceLineNo">876</span> getMinEvictableIdleTimeMillis(),<a name="line.876"></a> +<span class="sourceLineNo">877</span> getSoftMinEvictableIdleTimeMillis(),<a name="line.877"></a> +<span class="sourceLineNo">878</span> getMinIdlePerKey());<a name="line.878"></a> +<span class="sourceLineNo">879</span><a name="line.879"></a> +<span class="sourceLineNo">880</span> boolean testWhileIdle = getTestWhileIdle();<a name="line.880"></a> +<span class="sourceLineNo">881</span><a name="line.881"></a> +<span class="sourceLineNo">882</span> LinkedBlockingDeque<PooledObject<T>> idleObjects = null;<a name="line.882"></a> +<span class="sourceLineNo">883</span><a name="line.883"></a> +<span class="sourceLineNo">884</span> for (int i = 0, m = getNumTests(); i < m; i++) {<a name="line.884"></a> +<span class="sourceLineNo">885</span> if(evictionIterator == null || !evictionIterator.hasNext()) {<a name="line.885"></a> +<span class="sourceLineNo">886</span> if (evictionKeyIterator == null ||<a name="line.886"></a> +<span class="sourceLineNo">887</span> !evictionKeyIterator.hasNext()) {<a name="line.887"></a> +<span class="sourceLineNo">888</span> List<K> keyCopy = new ArrayList<K>();<a name="line.888"></a> +<span class="sourceLineNo">889</span> Lock readLock = keyLock.readLock();<a name="line.889"></a> +<span class="sourceLineNo">890</span> readLock.lock();<a name="line.890"></a> +<span class="sourceLineNo">891</span> try {<a name="line.891"></a> +<span class="sourceLineNo">892</span> keyCopy.addAll(poolKeyList);<a name="line.892"></a> +<span class="sourceLineNo">893</span> } finally {<a name="line.893"></a> +<span class="sourceLineNo">894</span> readLock.unlock();<a name="line.894"></a> +<span class="sourceLineNo">895</span> }<a name="line.895"></a>
[... 710 lines stripped ...]
