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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, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.util.concurrent.ThreadFactory;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>/**<a name="line.24"></a> |
| <span class="sourceLineNo">025</span> * Thread factory that creates daemon threads<a name="line.25"></a> |
| <span class="sourceLineNo">026</span> */<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>@InterfaceAudience.Private<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>public class DaemonThreadFactory implements ThreadFactory {<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> private static final AtomicInteger poolNumber = new AtomicInteger(1);<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> private final ThreadGroup group;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> private final AtomicInteger threadNumber = new AtomicInteger(1);<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> private final String namePrefix;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span><a name="line.33"></a> |
| <span class="sourceLineNo">034</span> public DaemonThreadFactory(String name) {<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> SecurityManager s = System.getSecurityManager();<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> namePrefix = name + poolNumber.getAndIncrement() + "-thread-";<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> }<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> @Override<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> public Thread newThread(Runnable r) {<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0);<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> if (!t.isDaemon()) {<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> t.setDaemon(true);<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> }<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> if (t.getPriority() != Thread.NORM_PRIORITY) {<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> t.setPriority(Thread.NORM_PRIORITY);<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> }<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> return t;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> }<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>}<a name="line.51"></a> |
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