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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.procedure2;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.util.Iterator;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.concurrent.TimeUnit;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.concurrent.locks.Condition;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.concurrent.locks.ReentrantLock;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.commons.lang3.builder.ToStringBuilder;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.commons.lang3.builder.ToStringStyle;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.slf4j.Logger;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">029</span><span id="line-29"></span> |
| <span class="source-line-no">030</span><span id="line-30">@InterfaceAudience.Private</span> |
| <span class="source-line-no">031</span><span id="line-31">public abstract class AbstractProcedureScheduler implements ProcedureScheduler {</span> |
| <span class="source-line-no">032</span><span id="line-32"> private static final Logger LOG = LoggerFactory.getLogger(AbstractProcedureScheduler.class);</span> |
| <span class="source-line-no">033</span><span id="line-33"> private final ReentrantLock schedulerLock = new ReentrantLock();</span> |
| <span class="source-line-no">034</span><span id="line-34"> private final Condition schedWaitCond = schedulerLock.newCondition();</span> |
| <span class="source-line-no">035</span><span id="line-35"> private boolean running = false;</span> |
| <span class="source-line-no">036</span><span id="line-36"></span> |
| <span class="source-line-no">037</span><span id="line-37"> // TODO: metrics</span> |
| <span class="source-line-no">038</span><span id="line-38"> private long pollCalls = 0;</span> |
| <span class="source-line-no">039</span><span id="line-39"> private long nullPollCalls = 0;</span> |
| <span class="source-line-no">040</span><span id="line-40"></span> |
| <span class="source-line-no">041</span><span id="line-41"> @Override</span> |
| <span class="source-line-no">042</span><span id="line-42"> public void start() {</span> |
| <span class="source-line-no">043</span><span id="line-43"> schedLock();</span> |
| <span class="source-line-no">044</span><span id="line-44"> try {</span> |
| <span class="source-line-no">045</span><span id="line-45"> running = true;</span> |
| <span class="source-line-no">046</span><span id="line-46"> } finally {</span> |
| <span class="source-line-no">047</span><span id="line-47"> schedUnlock();</span> |
| <span class="source-line-no">048</span><span id="line-48"> }</span> |
| <span class="source-line-no">049</span><span id="line-49"> }</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> @Override</span> |
| <span class="source-line-no">052</span><span id="line-52"> public void stop() {</span> |
| <span class="source-line-no">053</span><span id="line-53"> schedLock();</span> |
| <span class="source-line-no">054</span><span id="line-54"> try {</span> |
| <span class="source-line-no">055</span><span id="line-55"> running = false;</span> |
| <span class="source-line-no">056</span><span id="line-56"> schedWaitCond.signalAll();</span> |
| <span class="source-line-no">057</span><span id="line-57"> } finally {</span> |
| <span class="source-line-no">058</span><span id="line-58"> schedUnlock();</span> |
| <span class="source-line-no">059</span><span id="line-59"> }</span> |
| <span class="source-line-no">060</span><span id="line-60"> }</span> |
| <span class="source-line-no">061</span><span id="line-61"></span> |
| <span class="source-line-no">062</span><span id="line-62"> @Override</span> |
| <span class="source-line-no">063</span><span id="line-63"> public void signalAll() {</span> |
| <span class="source-line-no">064</span><span id="line-64"> schedLock();</span> |
| <span class="source-line-no">065</span><span id="line-65"> try {</span> |
| <span class="source-line-no">066</span><span id="line-66"> schedWaitCond.signalAll();</span> |
| <span class="source-line-no">067</span><span id="line-67"> } finally {</span> |
| <span class="source-line-no">068</span><span id="line-68"> schedUnlock();</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"> }</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> // ==========================================================================</span> |
| <span class="source-line-no">073</span><span id="line-73"> // Add related</span> |
| <span class="source-line-no">074</span><span id="line-74"> // ==========================================================================</span> |
| <span class="source-line-no">075</span><span id="line-75"> /**</span> |
| <span class="source-line-no">076</span><span id="line-76"> * Add the procedure to the queue. NOTE: this method is called with the sched lock held.</span> |
| <span class="source-line-no">077</span><span id="line-77"> * @param procedure the Procedure to add</span> |
| <span class="source-line-no">078</span><span id="line-78"> * @param addFront true if the item should be added to the front of the queue</span> |
| <span class="source-line-no">079</span><span id="line-79"> */</span> |
| <span class="source-line-no">080</span><span id="line-80"> protected abstract void enqueue(Procedure procedure, boolean addFront);</span> |
| <span class="source-line-no">081</span><span id="line-81"></span> |
| <span class="source-line-no">082</span><span id="line-82"> @Override</span> |
| <span class="source-line-no">083</span><span id="line-83"> public void addFront(final Procedure procedure) {</span> |
| <span class="source-line-no">084</span><span id="line-84"> push(procedure, true, true);</span> |
| <span class="source-line-no">085</span><span id="line-85"> }</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> @Override</span> |
| <span class="source-line-no">088</span><span id="line-88"> public void addFront(final Procedure procedure, boolean notify) {</span> |
| <span class="source-line-no">089</span><span id="line-89"> push(procedure, true, notify);</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> @Override</span> |
| <span class="source-line-no">093</span><span id="line-93"> public void addFront(Iterator<Procedure> procedureIterator) {</span> |
| <span class="source-line-no">094</span><span id="line-94"> schedLock();</span> |
| <span class="source-line-no">095</span><span id="line-95"> try {</span> |
| <span class="source-line-no">096</span><span id="line-96"> int count = 0;</span> |
| <span class="source-line-no">097</span><span id="line-97"> while (procedureIterator.hasNext()) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> Procedure procedure = procedureIterator.next();</span> |
| <span class="source-line-no">099</span><span id="line-99"> if (LOG.isTraceEnabled()) {</span> |
| <span class="source-line-no">100</span><span id="line-100"> LOG.trace("Wake " + procedure);</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"> push(procedure, /* addFront= */ true, /* notify= */false);</span> |
| <span class="source-line-no">103</span><span id="line-103"> count++;</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"> wakePollIfNeeded(count);</span> |
| <span class="source-line-no">106</span><span id="line-106"> } finally {</span> |
| <span class="source-line-no">107</span><span id="line-107"> schedUnlock();</span> |
| <span class="source-line-no">108</span><span id="line-108"> }</span> |
| <span class="source-line-no">109</span><span id="line-109"> }</span> |
| <span class="source-line-no">110</span><span id="line-110"></span> |
| <span class="source-line-no">111</span><span id="line-111"> @Override</span> |
| <span class="source-line-no">112</span><span id="line-112"> public void addBack(final Procedure procedure) {</span> |
| <span class="source-line-no">113</span><span id="line-113"> push(procedure, false, true);</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115"></span> |
| <span class="source-line-no">116</span><span id="line-116"> @Override</span> |
| <span class="source-line-no">117</span><span id="line-117"> public void addBack(final Procedure procedure, boolean notify) {</span> |
| <span class="source-line-no">118</span><span id="line-118"> push(procedure, false, notify);</span> |
| <span class="source-line-no">119</span><span id="line-119"> }</span> |
| <span class="source-line-no">120</span><span id="line-120"></span> |
| <span class="source-line-no">121</span><span id="line-121"> protected void push(final Procedure procedure, final boolean addFront, final boolean notify) {</span> |
| <span class="source-line-no">122</span><span id="line-122"> schedLock();</span> |
| <span class="source-line-no">123</span><span id="line-123"> try {</span> |
| <span class="source-line-no">124</span><span id="line-124"> enqueue(procedure, addFront);</span> |
| <span class="source-line-no">125</span><span id="line-125"> if (notify) {</span> |
| <span class="source-line-no">126</span><span id="line-126"> schedWaitCond.signal();</span> |
| <span class="source-line-no">127</span><span id="line-127"> }</span> |
| <span class="source-line-no">128</span><span id="line-128"> } finally {</span> |
| <span class="source-line-no">129</span><span id="line-129"> schedUnlock();</span> |
| <span class="source-line-no">130</span><span id="line-130"> }</span> |
| <span class="source-line-no">131</span><span id="line-131"> }</span> |
| <span class="source-line-no">132</span><span id="line-132"></span> |
| <span class="source-line-no">133</span><span id="line-133"> // ==========================================================================</span> |
| <span class="source-line-no">134</span><span id="line-134"> // Poll related</span> |
| <span class="source-line-no">135</span><span id="line-135"> // ==========================================================================</span> |
| <span class="source-line-no">136</span><span id="line-136"> /**</span> |
| <span class="source-line-no">137</span><span id="line-137"> * Fetch one Procedure from the queue NOTE: this method is called with the sched lock held.</span> |
| <span class="source-line-no">138</span><span id="line-138"> * @return the Procedure to execute, or null if nothing is available.</span> |
| <span class="source-line-no">139</span><span id="line-139"> */</span> |
| <span class="source-line-no">140</span><span id="line-140"> protected abstract Procedure dequeue();</span> |
| <span class="source-line-no">141</span><span id="line-141"></span> |
| <span class="source-line-no">142</span><span id="line-142"> @Override</span> |
| <span class="source-line-no">143</span><span id="line-143"> public Procedure poll() {</span> |
| <span class="source-line-no">144</span><span id="line-144"> return poll(-1);</span> |
| <span class="source-line-no">145</span><span id="line-145"> }</span> |
| <span class="source-line-no">146</span><span id="line-146"></span> |
| <span class="source-line-no">147</span><span id="line-147"> @Override</span> |
| <span class="source-line-no">148</span><span id="line-148"> public Procedure poll(long timeout, TimeUnit unit) {</span> |
| <span class="source-line-no">149</span><span id="line-149"> return poll(unit.toNanos(timeout));</span> |
| <span class="source-line-no">150</span><span id="line-150"> }</span> |
| <span class="source-line-no">151</span><span id="line-151"></span> |
| <span class="source-line-no">152</span><span id="line-152"> @edu.umd.cs.findbugs.annotations.SuppressWarnings("WA_AWAIT_NOT_IN_LOOP")</span> |
| <span class="source-line-no">153</span><span id="line-153"> public Procedure poll(final long nanos) {</span> |
| <span class="source-line-no">154</span><span id="line-154"> schedLock();</span> |
| <span class="source-line-no">155</span><span id="line-155"> try {</span> |
| <span class="source-line-no">156</span><span id="line-156"> if (!running) {</span> |
| <span class="source-line-no">157</span><span id="line-157"> LOG.debug("the scheduler is not running");</span> |
| <span class="source-line-no">158</span><span id="line-158"> return null;</span> |
| <span class="source-line-no">159</span><span id="line-159"> }</span> |
| <span class="source-line-no">160</span><span id="line-160"></span> |
| <span class="source-line-no">161</span><span id="line-161"> if (!queueHasRunnables()) {</span> |
| <span class="source-line-no">162</span><span id="line-162"> // WA_AWAIT_NOT_IN_LOOP: we are not in a loop because we want the caller</span> |
| <span class="source-line-no">163</span><span id="line-163"> // to take decisions after a wake/interruption.</span> |
| <span class="source-line-no">164</span><span id="line-164"> if (nanos < 0) {</span> |
| <span class="source-line-no">165</span><span id="line-165"> schedWaitCond.await();</span> |
| <span class="source-line-no">166</span><span id="line-166"> } else {</span> |
| <span class="source-line-no">167</span><span id="line-167"> schedWaitCond.awaitNanos(nanos);</span> |
| <span class="source-line-no">168</span><span id="line-168"> }</span> |
| <span class="source-line-no">169</span><span id="line-169"> if (!queueHasRunnables()) {</span> |
| <span class="source-line-no">170</span><span id="line-170"> nullPollCalls++;</span> |
| <span class="source-line-no">171</span><span id="line-171"> return null;</span> |
| <span class="source-line-no">172</span><span id="line-172"> }</span> |
| <span class="source-line-no">173</span><span id="line-173"> }</span> |
| <span class="source-line-no">174</span><span id="line-174"> final Procedure pollResult = dequeue();</span> |
| <span class="source-line-no">175</span><span id="line-175"></span> |
| <span class="source-line-no">176</span><span id="line-176"> pollCalls++;</span> |
| <span class="source-line-no">177</span><span id="line-177"> nullPollCalls += (pollResult == null) ? 1 : 0;</span> |
| <span class="source-line-no">178</span><span id="line-178"> return pollResult;</span> |
| <span class="source-line-no">179</span><span id="line-179"> } catch (InterruptedException e) {</span> |
| <span class="source-line-no">180</span><span id="line-180"> Thread.currentThread().interrupt();</span> |
| <span class="source-line-no">181</span><span id="line-181"> nullPollCalls++;</span> |
| <span class="source-line-no">182</span><span id="line-182"> return null;</span> |
| <span class="source-line-no">183</span><span id="line-183"> } finally {</span> |
| <span class="source-line-no">184</span><span id="line-184"> schedUnlock();</span> |
| <span class="source-line-no">185</span><span id="line-185"> }</span> |
| <span class="source-line-no">186</span><span id="line-186"> }</span> |
| <span class="source-line-no">187</span><span id="line-187"></span> |
| <span class="source-line-no">188</span><span id="line-188"> // ==========================================================================</span> |
| <span class="source-line-no">189</span><span id="line-189"> // Utils</span> |
| <span class="source-line-no">190</span><span id="line-190"> // ==========================================================================</span> |
| <span class="source-line-no">191</span><span id="line-191"> /**</span> |
| <span class="source-line-no">192</span><span id="line-192"> * Returns the number of elements in this queue. NOTE: this method is called with the sched lock</span> |
| <span class="source-line-no">193</span><span id="line-193"> * held.</span> |
| <span class="source-line-no">194</span><span id="line-194"> * @return the number of elements in this queue.</span> |
| <span class="source-line-no">195</span><span id="line-195"> */</span> |
| <span class="source-line-no">196</span><span id="line-196"> protected abstract int queueSize();</span> |
| <span class="source-line-no">197</span><span id="line-197"></span> |
| <span class="source-line-no">198</span><span id="line-198"> /**</span> |
| <span class="source-line-no">199</span><span id="line-199"> * Returns true if there are procedures available to process. NOTE: this method is called with the</span> |
| <span class="source-line-no">200</span><span id="line-200"> * sched lock held.</span> |
| <span class="source-line-no">201</span><span id="line-201"> * @return true if there are procedures available to process, otherwise false.</span> |
| <span class="source-line-no">202</span><span id="line-202"> */</span> |
| <span class="source-line-no">203</span><span id="line-203"> protected abstract boolean queueHasRunnables();</span> |
| <span class="source-line-no">204</span><span id="line-204"></span> |
| <span class="source-line-no">205</span><span id="line-205"> @Override</span> |
| <span class="source-line-no">206</span><span id="line-206"> public int size() {</span> |
| <span class="source-line-no">207</span><span id="line-207"> schedLock();</span> |
| <span class="source-line-no">208</span><span id="line-208"> try {</span> |
| <span class="source-line-no">209</span><span id="line-209"> return queueSize();</span> |
| <span class="source-line-no">210</span><span id="line-210"> } finally {</span> |
| <span class="source-line-no">211</span><span id="line-211"> schedUnlock();</span> |
| <span class="source-line-no">212</span><span id="line-212"> }</span> |
| <span class="source-line-no">213</span><span id="line-213"> }</span> |
| <span class="source-line-no">214</span><span id="line-214"></span> |
| <span class="source-line-no">215</span><span id="line-215"> @Override</span> |
| <span class="source-line-no">216</span><span id="line-216"> public boolean hasRunnables() {</span> |
| <span class="source-line-no">217</span><span id="line-217"> schedLock();</span> |
| <span class="source-line-no">218</span><span id="line-218"> try {</span> |
| <span class="source-line-no">219</span><span id="line-219"> return queueHasRunnables();</span> |
| <span class="source-line-no">220</span><span id="line-220"> } finally {</span> |
| <span class="source-line-no">221</span><span id="line-221"> schedUnlock();</span> |
| <span class="source-line-no">222</span><span id="line-222"> }</span> |
| <span class="source-line-no">223</span><span id="line-223"> }</span> |
| <span class="source-line-no">224</span><span id="line-224"></span> |
| <span class="source-line-no">225</span><span id="line-225"> // ============================================================================</span> |
| <span class="source-line-no">226</span><span id="line-226"> // TODO: Metrics</span> |
| <span class="source-line-no">227</span><span id="line-227"> // ============================================================================</span> |
| <span class="source-line-no">228</span><span id="line-228"> public long getPollCalls() {</span> |
| <span class="source-line-no">229</span><span id="line-229"> return pollCalls;</span> |
| <span class="source-line-no">230</span><span id="line-230"> }</span> |
| <span class="source-line-no">231</span><span id="line-231"></span> |
| <span class="source-line-no">232</span><span id="line-232"> public long getNullPollCalls() {</span> |
| <span class="source-line-no">233</span><span id="line-233"> return nullPollCalls;</span> |
| <span class="source-line-no">234</span><span id="line-234"> }</span> |
| <span class="source-line-no">235</span><span id="line-235"></span> |
| <span class="source-line-no">236</span><span id="line-236"> // ==========================================================================</span> |
| <span class="source-line-no">237</span><span id="line-237"> // Procedure Events</span> |
| <span class="source-line-no">238</span><span id="line-238"> // ==========================================================================</span> |
| <span class="source-line-no">239</span><span id="line-239"></span> |
| <span class="source-line-no">240</span><span id="line-240"> /**</span> |
| <span class="source-line-no">241</span><span id="line-241"> * Wake up all the given events. Note that we first take scheduler lock and then wakeInternal()</span> |
| <span class="source-line-no">242</span><span id="line-242"> * synchronizes on the event. Access should remain package-private. Use ProcedureEvent class to</span> |
| <span class="source-line-no">243</span><span id="line-243"> * wake/suspend events.</span> |
| <span class="source-line-no">244</span><span id="line-244"> * @param events the list of events to wake</span> |
| <span class="source-line-no">245</span><span id="line-245"> */</span> |
| <span class="source-line-no">246</span><span id="line-246"> public void wakeEvents(ProcedureEvent[] events) {</span> |
| <span class="source-line-no">247</span><span id="line-247"> schedLock();</span> |
| <span class="source-line-no">248</span><span id="line-248"> try {</span> |
| <span class="source-line-no">249</span><span id="line-249"> for (ProcedureEvent event : events) {</span> |
| <span class="source-line-no">250</span><span id="line-250"> if (event == null) {</span> |
| <span class="source-line-no">251</span><span id="line-251"> continue;</span> |
| <span class="source-line-no">252</span><span id="line-252"> }</span> |
| <span class="source-line-no">253</span><span id="line-253"> event.wakeInternal(this);</span> |
| <span class="source-line-no">254</span><span id="line-254"> }</span> |
| <span class="source-line-no">255</span><span id="line-255"> } finally {</span> |
| <span class="source-line-no">256</span><span id="line-256"> schedUnlock();</span> |
| <span class="source-line-no">257</span><span id="line-257"> }</span> |
| <span class="source-line-no">258</span><span id="line-258"> }</span> |
| <span class="source-line-no">259</span><span id="line-259"></span> |
| <span class="source-line-no">260</span><span id="line-260"> /**</span> |
| <span class="source-line-no">261</span><span id="line-261"> * Wakes up given waiting procedures by pushing them back into scheduler queues.</span> |
| <span class="source-line-no">262</span><span id="line-262"> * @return size of given {@code waitQueue}.</span> |
| <span class="source-line-no">263</span><span id="line-263"> */</span> |
| <span class="source-line-no">264</span><span id="line-264"> protected int wakeWaitingProcedures(LockAndQueue lockAndQueue) {</span> |
| <span class="source-line-no">265</span><span id="line-265"> return lockAndQueue.wakeWaitingProcedures(this);</span> |
| <span class="source-line-no">266</span><span id="line-266"> }</span> |
| <span class="source-line-no">267</span><span id="line-267"></span> |
| <span class="source-line-no">268</span><span id="line-268"> protected void waitProcedure(LockAndQueue lockAndQueue, final Procedure proc) {</span> |
| <span class="source-line-no">269</span><span id="line-269"> lockAndQueue.addLast(proc);</span> |
| <span class="source-line-no">270</span><span id="line-270"> }</span> |
| <span class="source-line-no">271</span><span id="line-271"></span> |
| <span class="source-line-no">272</span><span id="line-272"> protected void wakeProcedure(final Procedure procedure) {</span> |
| <span class="source-line-no">273</span><span id="line-273"> LOG.trace("Wake {}", procedure);</span> |
| <span class="source-line-no">274</span><span id="line-274"> push(procedure, /* addFront= */ true, /* notify= */false);</span> |
| <span class="source-line-no">275</span><span id="line-275"> }</span> |
| <span class="source-line-no">276</span><span id="line-276"></span> |
| <span class="source-line-no">277</span><span id="line-277"> // ==========================================================================</span> |
| <span class="source-line-no">278</span><span id="line-278"> // Internal helpers</span> |
| <span class="source-line-no">279</span><span id="line-279"> // ==========================================================================</span> |
| <span class="source-line-no">280</span><span id="line-280"> protected void schedLock() {</span> |
| <span class="source-line-no">281</span><span id="line-281"> schedulerLock.lock();</span> |
| <span class="source-line-no">282</span><span id="line-282"> }</span> |
| <span class="source-line-no">283</span><span id="line-283"></span> |
| <span class="source-line-no">284</span><span id="line-284"> protected void schedUnlock() {</span> |
| <span class="source-line-no">285</span><span id="line-285"> schedulerLock.unlock();</span> |
| <span class="source-line-no">286</span><span id="line-286"> }</span> |
| <span class="source-line-no">287</span><span id="line-287"></span> |
| <span class="source-line-no">288</span><span id="line-288"> protected void wakePollIfNeeded(final int waitingCount) {</span> |
| <span class="source-line-no">289</span><span id="line-289"> if (waitingCount <= 0) {</span> |
| <span class="source-line-no">290</span><span id="line-290"> return;</span> |
| <span class="source-line-no">291</span><span id="line-291"> }</span> |
| <span class="source-line-no">292</span><span id="line-292"> if (waitingCount == 1) {</span> |
| <span class="source-line-no">293</span><span id="line-293"> schedWaitCond.signal();</span> |
| <span class="source-line-no">294</span><span id="line-294"> } else {</span> |
| <span class="source-line-no">295</span><span id="line-295"> schedWaitCond.signalAll();</span> |
| <span class="source-line-no">296</span><span id="line-296"> }</span> |
| <span class="source-line-no">297</span><span id="line-297"> }</span> |
| <span class="source-line-no">298</span><span id="line-298"></span> |
| <span class="source-line-no">299</span><span id="line-299"> @Override</span> |
| <span class="source-line-no">300</span><span id="line-300"> public String toString() {</span> |
| <span class="source-line-no">301</span><span id="line-301"> return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).append("running", running)</span> |
| <span class="source-line-no">302</span><span id="line-302"> .build();</span> |
| <span class="source-line-no">303</span><span id="line-303"> }</span> |
| <span class="source-line-no">304</span><span id="line-304">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
