http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b9722a17/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.WALStoreLeaseRecovery.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.WALStoreLeaseRecovery.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.WALStoreLeaseRecovery.html index 0b9d890..d852fd0 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.WALStoreLeaseRecovery.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.WALStoreLeaseRecovery.html @@ -155,25 +155,25 @@ <span class="sourceLineNo">147</span> }<a name="line.147"></a> <span class="sourceLineNo">148</span><a name="line.148"></a> <span class="sourceLineNo">149</span> public boolean waitInitialized(Procedure proc) {<a name="line.149"></a> -<span class="sourceLineNo">150</span> return procSched.waitEvent(master.getInitializedEvent(), proc);<a name="line.150"></a> +<span class="sourceLineNo">150</span> return master.getInitializedEvent().suspendIfNotReady(proc);<a name="line.150"></a> <span class="sourceLineNo">151</span> }<a name="line.151"></a> <span class="sourceLineNo">152</span><a name="line.152"></a> <span class="sourceLineNo">153</span> public boolean waitServerCrashProcessingEnabled(Procedure proc) {<a name="line.153"></a> <span class="sourceLineNo">154</span> if (master instanceof HMaster) {<a name="line.154"></a> -<span class="sourceLineNo">155</span> return procSched.waitEvent(((HMaster)master).getServerCrashProcessingEnabledEvent(), proc);<a name="line.155"></a> +<span class="sourceLineNo">155</span> return ((HMaster)master).getServerCrashProcessingEnabledEvent().suspendIfNotReady(proc);<a name="line.155"></a> <span class="sourceLineNo">156</span> }<a name="line.156"></a> <span class="sourceLineNo">157</span> return false;<a name="line.157"></a> <span class="sourceLineNo">158</span> }<a name="line.158"></a> <span class="sourceLineNo">159</span><a name="line.159"></a> <span class="sourceLineNo">160</span> public boolean waitFailoverCleanup(Procedure proc) {<a name="line.160"></a> -<span class="sourceLineNo">161</span> return procSched.waitEvent(master.getAssignmentManager().getFailoverCleanupEvent(), proc);<a name="line.161"></a> +<span class="sourceLineNo">161</span> return master.getAssignmentManager().getFailoverCleanupEvent().suspendIfNotReady(proc);<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> public void setEventReady(ProcedureEvent event, boolean isReady) {<a name="line.164"></a> <span class="sourceLineNo">165</span> if (isReady) {<a name="line.165"></a> -<span class="sourceLineNo">166</span> procSched.wakeEvent(event);<a name="line.166"></a> +<span class="sourceLineNo">166</span> event.wake(procSched);<a name="line.166"></a> <span class="sourceLineNo">167</span> } else {<a name="line.167"></a> -<span class="sourceLineNo">168</span> procSched.suspendEvent(event);<a name="line.168"></a> +<span class="sourceLineNo">168</span> event.suspend();<a name="line.168"></a> <span class="sourceLineNo">169</span> }<a name="line.169"></a> <span class="sourceLineNo">170</span> }<a name="line.170"></a> <span class="sourceLineNo">171</span><a name="line.171"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b9722a17/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html index 0b9d890..d852fd0 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html @@ -155,25 +155,25 @@ <span class="sourceLineNo">147</span> }<a name="line.147"></a> <span class="sourceLineNo">148</span><a name="line.148"></a> <span class="sourceLineNo">149</span> public boolean waitInitialized(Procedure proc) {<a name="line.149"></a> -<span class="sourceLineNo">150</span> return procSched.waitEvent(master.getInitializedEvent(), proc);<a name="line.150"></a> +<span class="sourceLineNo">150</span> return master.getInitializedEvent().suspendIfNotReady(proc);<a name="line.150"></a> <span class="sourceLineNo">151</span> }<a name="line.151"></a> <span class="sourceLineNo">152</span><a name="line.152"></a> <span class="sourceLineNo">153</span> public boolean waitServerCrashProcessingEnabled(Procedure proc) {<a name="line.153"></a> <span class="sourceLineNo">154</span> if (master instanceof HMaster) {<a name="line.154"></a> -<span class="sourceLineNo">155</span> return procSched.waitEvent(((HMaster)master).getServerCrashProcessingEnabledEvent(), proc);<a name="line.155"></a> +<span class="sourceLineNo">155</span> return ((HMaster)master).getServerCrashProcessingEnabledEvent().suspendIfNotReady(proc);<a name="line.155"></a> <span class="sourceLineNo">156</span> }<a name="line.156"></a> <span class="sourceLineNo">157</span> return false;<a name="line.157"></a> <span class="sourceLineNo">158</span> }<a name="line.158"></a> <span class="sourceLineNo">159</span><a name="line.159"></a> <span class="sourceLineNo">160</span> public boolean waitFailoverCleanup(Procedure proc) {<a name="line.160"></a> -<span class="sourceLineNo">161</span> return procSched.waitEvent(master.getAssignmentManager().getFailoverCleanupEvent(), proc);<a name="line.161"></a> +<span class="sourceLineNo">161</span> return master.getAssignmentManager().getFailoverCleanupEvent().suspendIfNotReady(proc);<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> public void setEventReady(ProcedureEvent event, boolean isReady) {<a name="line.164"></a> <span class="sourceLineNo">165</span> if (isReady) {<a name="line.165"></a> -<span class="sourceLineNo">166</span> procSched.wakeEvent(event);<a name="line.166"></a> +<span class="sourceLineNo">166</span> event.wake(procSched);<a name="line.166"></a> <span class="sourceLineNo">167</span> } else {<a name="line.167"></a> -<span class="sourceLineNo">168</span> procSched.suspendEvent(event);<a name="line.168"></a> +<span class="sourceLineNo">168</span> event.suspend();<a name="line.168"></a> <span class="sourceLineNo">169</span> }<a name="line.169"></a> <span class="sourceLineNo">170</span> }<a name="line.170"></a> <span class="sourceLineNo">171</span><a name="line.171"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b9722a17/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html index e36d2ac..6175ecc 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html @@ -26,298 +26,281 @@ <span class="sourceLineNo">018</span><a name="line.18"></a> <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.procedure2;<a name="line.19"></a> <span class="sourceLineNo">020</span><a name="line.20"></a> -<span class="sourceLineNo">021</span>import java.util.concurrent.locks.Condition;<a name="line.21"></a> -<span class="sourceLineNo">022</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.22"></a> -<span class="sourceLineNo">023</span>import java.util.concurrent.TimeUnit;<a name="line.23"></a> -<span class="sourceLineNo">024</span><a name="line.24"></a> -<span class="sourceLineNo">025</span>import org.apache.commons.logging.Log;<a name="line.25"></a> -<span class="sourceLineNo">026</span>import org.apache.commons.logging.LogFactory;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.27"></a> -<span class="sourceLineNo">028</span><a name="line.28"></a> -<span class="sourceLineNo">029</span>@InterfaceAudience.Private<a name="line.29"></a> -<span class="sourceLineNo">030</span>public abstract class AbstractProcedureScheduler implements ProcedureScheduler {<a name="line.30"></a> -<span class="sourceLineNo">031</span> private static final Log LOG = LogFactory.getLog(AbstractProcedureScheduler.class);<a name="line.31"></a> -<span class="sourceLineNo">032</span> private final ReentrantLock schedulerLock = new ReentrantLock();<a name="line.32"></a> -<span class="sourceLineNo">033</span> private final Condition schedWaitCond = schedulerLock.newCondition();<a name="line.33"></a> -<span class="sourceLineNo">034</span> private boolean running = false;<a name="line.34"></a> -<span class="sourceLineNo">035</span><a name="line.35"></a> -<span class="sourceLineNo">036</span> // TODO: metrics<a name="line.36"></a> -<span class="sourceLineNo">037</span> private long pollCalls = 0;<a name="line.37"></a> -<span class="sourceLineNo">038</span> private long nullPollCalls = 0;<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 void start() {<a name="line.41"></a> -<span class="sourceLineNo">042</span> schedLock();<a name="line.42"></a> -<span class="sourceLineNo">043</span> try {<a name="line.43"></a> -<span class="sourceLineNo">044</span> running = true;<a name="line.44"></a> -<span class="sourceLineNo">045</span> } finally {<a name="line.45"></a> -<span class="sourceLineNo">046</span> schedUnlock();<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> @Override<a name="line.50"></a> -<span class="sourceLineNo">051</span> public void stop() {<a name="line.51"></a> -<span class="sourceLineNo">052</span> schedLock();<a name="line.52"></a> -<span class="sourceLineNo">053</span> try {<a name="line.53"></a> -<span class="sourceLineNo">054</span> running = false;<a name="line.54"></a> -<span class="sourceLineNo">055</span> schedWaitCond.signalAll();<a name="line.55"></a> -<span class="sourceLineNo">056</span> } finally {<a name="line.56"></a> -<span class="sourceLineNo">057</span> schedUnlock();<a name="line.57"></a> -<span class="sourceLineNo">058</span> }<a name="line.58"></a> -<span class="sourceLineNo">059</span> }<a name="line.59"></a> -<span class="sourceLineNo">060</span><a name="line.60"></a> -<span class="sourceLineNo">061</span> @Override<a name="line.61"></a> -<span class="sourceLineNo">062</span> public void signalAll() {<a name="line.62"></a> -<span class="sourceLineNo">063</span> schedLock();<a name="line.63"></a> -<span class="sourceLineNo">064</span> try {<a name="line.64"></a> -<span class="sourceLineNo">065</span> schedWaitCond.signalAll();<a name="line.65"></a> -<span class="sourceLineNo">066</span> } finally {<a name="line.66"></a> -<span class="sourceLineNo">067</span> schedUnlock();<a name="line.67"></a> -<span class="sourceLineNo">068</span> }<a name="line.68"></a> -<span class="sourceLineNo">069</span> }<a name="line.69"></a> -<span class="sourceLineNo">070</span><a name="line.70"></a> -<span class="sourceLineNo">071</span> // ==========================================================================<a name="line.71"></a> -<span class="sourceLineNo">072</span> // Add related<a name="line.72"></a> -<span class="sourceLineNo">073</span> // ==========================================================================<a name="line.73"></a> -<span class="sourceLineNo">074</span> /**<a name="line.74"></a> -<span class="sourceLineNo">075</span> * Add the procedure to the queue.<a name="line.75"></a> -<span class="sourceLineNo">076</span> * NOTE: this method is called with the sched lock held.<a name="line.76"></a> -<span class="sourceLineNo">077</span> * @param procedure the Procedure to add<a name="line.77"></a> -<span class="sourceLineNo">078</span> * @param addFront true if the item should be added to the front of the queue<a name="line.78"></a> -<span class="sourceLineNo">079</span> */<a name="line.79"></a> -<span class="sourceLineNo">080</span> protected abstract void enqueue(Procedure procedure, boolean addFront);<a name="line.80"></a> -<span class="sourceLineNo">081</span><a name="line.81"></a> -<span class="sourceLineNo">082</span> public void addFront(final Procedure procedure) {<a name="line.82"></a> -<span class="sourceLineNo">083</span> push(procedure, true, true);<a name="line.83"></a> -<span class="sourceLineNo">084</span> }<a name="line.84"></a> -<span class="sourceLineNo">085</span><a name="line.85"></a> -<span class="sourceLineNo">086</span> public void addBack(final Procedure procedure) {<a name="line.86"></a> -<span class="sourceLineNo">087</span> push(procedure, false, true);<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> protected void push(final Procedure procedure, final boolean addFront, final boolean notify) {<a name="line.90"></a> -<span class="sourceLineNo">091</span> schedLock();<a name="line.91"></a> -<span class="sourceLineNo">092</span> try {<a name="line.92"></a> -<span class="sourceLineNo">093</span> enqueue(procedure, addFront);<a name="line.93"></a> -<span class="sourceLineNo">094</span> if (notify) {<a name="line.94"></a> -<span class="sourceLineNo">095</span> schedWaitCond.signal();<a name="line.95"></a> -<span class="sourceLineNo">096</span> }<a name="line.96"></a> -<span class="sourceLineNo">097</span> } finally {<a name="line.97"></a> -<span class="sourceLineNo">098</span> schedUnlock();<a name="line.98"></a> -<span class="sourceLineNo">099</span> }<a name="line.99"></a> -<span class="sourceLineNo">100</span> }<a name="line.100"></a> -<span class="sourceLineNo">101</span><a name="line.101"></a> -<span class="sourceLineNo">102</span> // ==========================================================================<a name="line.102"></a> -<span class="sourceLineNo">103</span> // Poll related<a name="line.103"></a> -<span class="sourceLineNo">104</span> // ==========================================================================<a name="line.104"></a> -<span class="sourceLineNo">105</span> /**<a name="line.105"></a> -<span class="sourceLineNo">106</span> * Fetch one Procedure from the queue<a name="line.106"></a> -<span class="sourceLineNo">107</span> * NOTE: this method is called with the sched lock held.<a name="line.107"></a> -<span class="sourceLineNo">108</span> * @return the Procedure to execute, or null if nothing is available.<a name="line.108"></a> -<span class="sourceLineNo">109</span> */<a name="line.109"></a> -<span class="sourceLineNo">110</span> protected abstract Procedure dequeue();<a name="line.110"></a> +<span class="sourceLineNo">021</span>import java.util.Iterator;<a name="line.21"></a> +<span class="sourceLineNo">022</span>import java.util.concurrent.locks.Condition;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import java.util.concurrent.TimeUnit;<a name="line.24"></a> +<span class="sourceLineNo">025</span><a name="line.25"></a> +<span class="sourceLineNo">026</span>import org.apache.commons.logging.Log;<a name="line.26"></a> +<span class="sourceLineNo">027</span>import org.apache.commons.logging.LogFactory;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.28"></a> +<span class="sourceLineNo">029</span><a name="line.29"></a> +<span class="sourceLineNo">030</span>@InterfaceAudience.Private<a name="line.30"></a> +<span class="sourceLineNo">031</span>public abstract class AbstractProcedureScheduler implements ProcedureScheduler {<a name="line.31"></a> +<span class="sourceLineNo">032</span> private static final Log LOG = LogFactory.getLog(AbstractProcedureScheduler.class);<a name="line.32"></a> +<span class="sourceLineNo">033</span> private final ReentrantLock schedulerLock = new ReentrantLock();<a name="line.33"></a> +<span class="sourceLineNo">034</span> private final Condition schedWaitCond = schedulerLock.newCondition();<a name="line.34"></a> +<span class="sourceLineNo">035</span> private boolean running = false;<a name="line.35"></a> +<span class="sourceLineNo">036</span><a name="line.36"></a> +<span class="sourceLineNo">037</span> // TODO: metrics<a name="line.37"></a> +<span class="sourceLineNo">038</span> private long pollCalls = 0;<a name="line.38"></a> +<span class="sourceLineNo">039</span> private long nullPollCalls = 0;<a name="line.39"></a> +<span class="sourceLineNo">040</span><a name="line.40"></a> +<span class="sourceLineNo">041</span> @Override<a name="line.41"></a> +<span class="sourceLineNo">042</span> public void start() {<a name="line.42"></a> +<span class="sourceLineNo">043</span> schedLock();<a name="line.43"></a> +<span class="sourceLineNo">044</span> try {<a name="line.44"></a> +<span class="sourceLineNo">045</span> running = true;<a name="line.45"></a> +<span class="sourceLineNo">046</span> } finally {<a name="line.46"></a> +<span class="sourceLineNo">047</span> schedUnlock();<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><a name="line.50"></a> +<span class="sourceLineNo">051</span> @Override<a name="line.51"></a> +<span class="sourceLineNo">052</span> public void stop() {<a name="line.52"></a> +<span class="sourceLineNo">053</span> schedLock();<a name="line.53"></a> +<span class="sourceLineNo">054</span> try {<a name="line.54"></a> +<span class="sourceLineNo">055</span> running = false;<a name="line.55"></a> +<span class="sourceLineNo">056</span> schedWaitCond.signalAll();<a name="line.56"></a> +<span class="sourceLineNo">057</span> } finally {<a name="line.57"></a> +<span class="sourceLineNo">058</span> schedUnlock();<a name="line.58"></a> +<span class="sourceLineNo">059</span> }<a name="line.59"></a> +<span class="sourceLineNo">060</span> }<a name="line.60"></a> +<span class="sourceLineNo">061</span><a name="line.61"></a> +<span class="sourceLineNo">062</span> @Override<a name="line.62"></a> +<span class="sourceLineNo">063</span> public void signalAll() {<a name="line.63"></a> +<span class="sourceLineNo">064</span> schedLock();<a name="line.64"></a> +<span class="sourceLineNo">065</span> try {<a name="line.65"></a> +<span class="sourceLineNo">066</span> schedWaitCond.signalAll();<a name="line.66"></a> +<span class="sourceLineNo">067</span> } finally {<a name="line.67"></a> +<span class="sourceLineNo">068</span> schedUnlock();<a name="line.68"></a> +<span class="sourceLineNo">069</span> }<a name="line.69"></a> +<span class="sourceLineNo">070</span> }<a name="line.70"></a> +<span class="sourceLineNo">071</span><a name="line.71"></a> +<span class="sourceLineNo">072</span> // ==========================================================================<a name="line.72"></a> +<span class="sourceLineNo">073</span> // Add related<a name="line.73"></a> +<span class="sourceLineNo">074</span> // ==========================================================================<a name="line.74"></a> +<span class="sourceLineNo">075</span> /**<a name="line.75"></a> +<span class="sourceLineNo">076</span> * Add the procedure to the queue.<a name="line.76"></a> +<span class="sourceLineNo">077</span> * NOTE: this method is called with the sched lock held.<a name="line.77"></a> +<span class="sourceLineNo">078</span> * @param procedure the Procedure to add<a name="line.78"></a> +<span class="sourceLineNo">079</span> * @param addFront true if the item should be added to the front of the queue<a name="line.79"></a> +<span class="sourceLineNo">080</span> */<a name="line.80"></a> +<span class="sourceLineNo">081</span> protected abstract void enqueue(Procedure procedure, boolean addFront);<a name="line.81"></a> +<span class="sourceLineNo">082</span><a name="line.82"></a> +<span class="sourceLineNo">083</span> @Override<a name="line.83"></a> +<span class="sourceLineNo">084</span> public void addFront(final Procedure procedure) {<a name="line.84"></a> +<span class="sourceLineNo">085</span> push(procedure, true, true);<a name="line.85"></a> +<span class="sourceLineNo">086</span> }<a name="line.86"></a> +<span class="sourceLineNo">087</span><a name="line.87"></a> +<span class="sourceLineNo">088</span> @Override<a name="line.88"></a> +<span class="sourceLineNo">089</span> public void addFront(Iterator<Procedure> procedureIterator) {<a name="line.89"></a> +<span class="sourceLineNo">090</span> schedLock();<a name="line.90"></a> +<span class="sourceLineNo">091</span> try {<a name="line.91"></a> +<span class="sourceLineNo">092</span> int count = 0;<a name="line.92"></a> +<span class="sourceLineNo">093</span> while (procedureIterator.hasNext()) {<a name="line.93"></a> +<span class="sourceLineNo">094</span> Procedure procedure = procedureIterator.next();<a name="line.94"></a> +<span class="sourceLineNo">095</span> if (LOG.isTraceEnabled()) {<a name="line.95"></a> +<span class="sourceLineNo">096</span> LOG.trace("Wake " + procedure);<a name="line.96"></a> +<span class="sourceLineNo">097</span> }<a name="line.97"></a> +<span class="sourceLineNo">098</span> push(procedure, /* addFront= */ true, /* notify= */false);<a name="line.98"></a> +<span class="sourceLineNo">099</span> count++;<a name="line.99"></a> +<span class="sourceLineNo">100</span> }<a name="line.100"></a> +<span class="sourceLineNo">101</span> wakePollIfNeeded(count);<a name="line.101"></a> +<span class="sourceLineNo">102</span> } finally {<a name="line.102"></a> +<span class="sourceLineNo">103</span> schedUnlock();<a name="line.103"></a> +<span class="sourceLineNo">104</span> }<a name="line.104"></a> +<span class="sourceLineNo">105</span> }<a name="line.105"></a> +<span class="sourceLineNo">106</span><a name="line.106"></a> +<span class="sourceLineNo">107</span> @Override<a name="line.107"></a> +<span class="sourceLineNo">108</span> public void addBack(final Procedure procedure) {<a name="line.108"></a> +<span class="sourceLineNo">109</span> push(procedure, false, true);<a name="line.109"></a> +<span class="sourceLineNo">110</span> }<a name="line.110"></a> <span class="sourceLineNo">111</span><a name="line.111"></a> -<span class="sourceLineNo">112</span> @Override<a name="line.112"></a> -<span class="sourceLineNo">113</span> public Procedure poll() {<a name="line.113"></a> -<span class="sourceLineNo">114</span> return poll(-1);<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> @Override<a name="line.117"></a> -<span class="sourceLineNo">118</span> public Procedure poll(long timeout, TimeUnit unit) {<a name="line.118"></a> -<span class="sourceLineNo">119</span> return poll(unit.toNanos(timeout));<a name="line.119"></a> -<span class="sourceLineNo">120</span> }<a name="line.120"></a> -<span class="sourceLineNo">121</span><a name="line.121"></a> -<span class="sourceLineNo">122</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings("WA_AWAIT_NOT_IN_LOOP")<a name="line.122"></a> -<span class="sourceLineNo">123</span> public Procedure poll(final long nanos) {<a name="line.123"></a> -<span class="sourceLineNo">124</span> schedLock();<a name="line.124"></a> -<span class="sourceLineNo">125</span> try {<a name="line.125"></a> -<span class="sourceLineNo">126</span> if (!running) {<a name="line.126"></a> -<span class="sourceLineNo">127</span> LOG.debug("the scheduler is not running");<a name="line.127"></a> -<span class="sourceLineNo">128</span> return null;<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> if (!queueHasRunnables()) {<a name="line.131"></a> -<span class="sourceLineNo">132</span> // WA_AWAIT_NOT_IN_LOOP: we are not in a loop because we want the caller<a name="line.132"></a> -<span class="sourceLineNo">133</span> // to take decisions after a wake/interruption.<a name="line.133"></a> -<span class="sourceLineNo">134</span> if (nanos < 0) {<a name="line.134"></a> -<span class="sourceLineNo">135</span> schedWaitCond.await();<a name="line.135"></a> -<span class="sourceLineNo">136</span> } else {<a name="line.136"></a> -<span class="sourceLineNo">137</span> schedWaitCond.awaitNanos(nanos);<a name="line.137"></a> -<span class="sourceLineNo">138</span> }<a name="line.138"></a> -<span class="sourceLineNo">139</span> if (!queueHasRunnables()) {<a name="line.139"></a> -<span class="sourceLineNo">140</span> nullPollCalls++;<a name="line.140"></a> -<span class="sourceLineNo">141</span> return null;<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> final Procedure pollResult = dequeue();<a name="line.145"></a> -<span class="sourceLineNo">146</span> pollCalls++;<a name="line.146"></a> -<span class="sourceLineNo">147</span> nullPollCalls += (pollResult == null) ? 1 : 0;<a name="line.147"></a> -<span class="sourceLineNo">148</span> return pollResult;<a name="line.148"></a> -<span class="sourceLineNo">149</span> } catch (InterruptedException e) {<a name="line.149"></a> -<span class="sourceLineNo">150</span> Thread.currentThread().interrupt();<a name="line.150"></a> -<span class="sourceLineNo">151</span> nullPollCalls++;<a name="line.151"></a> -<span class="sourceLineNo">152</span> return null;<a name="line.152"></a> -<span class="sourceLineNo">153</span> } finally {<a name="line.153"></a> -<span class="sourceLineNo">154</span> schedUnlock();<a name="line.154"></a> -<span class="sourceLineNo">155</span> }<a name="line.155"></a> -<span class="sourceLineNo">156</span> }<a name="line.156"></a> -<span class="sourceLineNo">157</span><a name="line.157"></a> -<span class="sourceLineNo">158</span> // ==========================================================================<a name="line.158"></a> -<span class="sourceLineNo">159</span> // Utils<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> * Returns the number of elements in this queue.<a name="line.162"></a> -<span class="sourceLineNo">163</span> * NOTE: this method is called with the sched lock held.<a name="line.163"></a> -<span class="sourceLineNo">164</span> * @return the number of elements in this queue.<a name="line.164"></a> -<span class="sourceLineNo">165</span> */<a name="line.165"></a> -<span class="sourceLineNo">166</span> protected abstract int queueSize();<a name="line.166"></a> -<span class="sourceLineNo">167</span><a name="line.167"></a> -<span class="sourceLineNo">168</span> /**<a name="line.168"></a> -<span class="sourceLineNo">169</span> * Returns true if there are procedures available to process.<a name="line.169"></a> -<span class="sourceLineNo">170</span> * NOTE: this method is called with the sched lock held.<a name="line.170"></a> -<span class="sourceLineNo">171</span> * @return true if there are procedures available to process, otherwise false.<a name="line.171"></a> -<span class="sourceLineNo">172</span> */<a name="line.172"></a> -<span class="sourceLineNo">173</span> protected abstract boolean queueHasRunnables();<a name="line.173"></a> -<span class="sourceLineNo">174</span><a name="line.174"></a> -<span class="sourceLineNo">175</span> @Override<a name="line.175"></a> -<span class="sourceLineNo">176</span> public int size() {<a name="line.176"></a> -<span class="sourceLineNo">177</span> schedLock();<a name="line.177"></a> -<span class="sourceLineNo">178</span> try {<a name="line.178"></a> -<span class="sourceLineNo">179</span> return queueSize();<a name="line.179"></a> -<span class="sourceLineNo">180</span> } finally {<a name="line.180"></a> -<span class="sourceLineNo">181</span> schedUnlock();<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> @Override<a name="line.185"></a> -<span class="sourceLineNo">186</span> public boolean hasRunnables() {<a name="line.186"></a> -<span class="sourceLineNo">187</span> schedLock();<a name="line.187"></a> -<span class="sourceLineNo">188</span> try {<a name="line.188"></a> -<span class="sourceLineNo">189</span> return queueHasRunnables();<a name="line.189"></a> -<span class="sourceLineNo">190</span> } finally {<a name="line.190"></a> -<span class="sourceLineNo">191</span> schedUnlock();<a name="line.191"></a> -<span class="sourceLineNo">192</span> }<a name="line.192"></a> -<span class="sourceLineNo">193</span> }<a name="line.193"></a> -<span class="sourceLineNo">194</span><a name="line.194"></a> -<span class="sourceLineNo">195</span> // ============================================================================<a name="line.195"></a> -<span class="sourceLineNo">196</span> // TODO: Metrics<a name="line.196"></a> -<span class="sourceLineNo">197</span> // ============================================================================<a name="line.197"></a> -<span class="sourceLineNo">198</span> public long getPollCalls() {<a name="line.198"></a> -<span class="sourceLineNo">199</span> return pollCalls;<a name="line.199"></a> -<span class="sourceLineNo">200</span> }<a name="line.200"></a> -<span class="sourceLineNo">201</span><a name="line.201"></a> -<span class="sourceLineNo">202</span> public long getNullPollCalls() {<a name="line.202"></a> -<span class="sourceLineNo">203</span> return nullPollCalls;<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> // Procedure Events<a name="line.207"></a> -<span class="sourceLineNo">208</span> // ==========================================================================<a name="line.208"></a> -<span class="sourceLineNo">209</span> @Override<a name="line.209"></a> -<span class="sourceLineNo">210</span> public boolean waitEvent(final ProcedureEvent event, final Procedure procedure) {<a name="line.210"></a> -<span class="sourceLineNo">211</span> synchronized (event) {<a name="line.211"></a> -<span class="sourceLineNo">212</span> if (event.isReady()) {<a name="line.212"></a> -<span class="sourceLineNo">213</span> return false;<a name="line.213"></a> -<span class="sourceLineNo">214</span> }<a name="line.214"></a> -<span class="sourceLineNo">215</span> waitProcedure(event.getSuspendedProcedures(), procedure);<a name="line.215"></a> -<span class="sourceLineNo">216</span> return true;<a name="line.216"></a> -<span class="sourceLineNo">217</span> }<a name="line.217"></a> -<span class="sourceLineNo">218</span> }<a name="line.218"></a> -<span class="sourceLineNo">219</span><a name="line.219"></a> -<span class="sourceLineNo">220</span> @Override<a name="line.220"></a> -<span class="sourceLineNo">221</span> public void suspendEvent(final ProcedureEvent event) {<a name="line.221"></a> -<span class="sourceLineNo">222</span> final boolean traceEnabled = LOG.isTraceEnabled();<a name="line.222"></a> -<span class="sourceLineNo">223</span> synchronized (event) {<a name="line.223"></a> -<span class="sourceLineNo">224</span> event.setReady(false);<a name="line.224"></a> -<span class="sourceLineNo">225</span> if (traceEnabled) {<a name="line.225"></a> -<span class="sourceLineNo">226</span> LOG.trace("Suspend " + event);<a name="line.226"></a> -<span class="sourceLineNo">227</span> }<a name="line.227"></a> -<span class="sourceLineNo">228</span> }<a name="line.228"></a> -<span class="sourceLineNo">229</span> }<a name="line.229"></a> -<span class="sourceLineNo">230</span><a name="line.230"></a> -<span class="sourceLineNo">231</span> @Override<a name="line.231"></a> -<span class="sourceLineNo">232</span> public void wakeEvent(final ProcedureEvent event) {<a name="line.232"></a> -<span class="sourceLineNo">233</span> wakeEvents(1, event);<a name="line.233"></a> -<span class="sourceLineNo">234</span> }<a name="line.234"></a> -<span class="sourceLineNo">235</span><a name="line.235"></a> -<span class="sourceLineNo">236</span> @Override<a name="line.236"></a> -<span class="sourceLineNo">237</span> public void wakeEvents(final int count, final ProcedureEvent... events) {<a name="line.237"></a> -<span class="sourceLineNo">238</span> final boolean traceEnabled = LOG.isTraceEnabled();<a name="line.238"></a> +<span class="sourceLineNo">112</span> protected void push(final Procedure procedure, final boolean addFront, final boolean notify) {<a name="line.112"></a> +<span class="sourceLineNo">113</span> schedLock();<a name="line.113"></a> +<span class="sourceLineNo">114</span> try {<a name="line.114"></a> +<span class="sourceLineNo">115</span> enqueue(procedure, addFront);<a name="line.115"></a> +<span class="sourceLineNo">116</span> if (notify) {<a name="line.116"></a> +<span class="sourceLineNo">117</span> schedWaitCond.signal();<a name="line.117"></a> +<span class="sourceLineNo">118</span> }<a name="line.118"></a> +<span class="sourceLineNo">119</span> } finally {<a name="line.119"></a> +<span class="sourceLineNo">120</span> schedUnlock();<a name="line.120"></a> +<span class="sourceLineNo">121</span> }<a name="line.121"></a> +<span class="sourceLineNo">122</span> }<a name="line.122"></a> +<span class="sourceLineNo">123</span><a name="line.123"></a> +<span class="sourceLineNo">124</span> // ==========================================================================<a name="line.124"></a> +<span class="sourceLineNo">125</span> // Poll related<a name="line.125"></a> +<span class="sourceLineNo">126</span> // ==========================================================================<a name="line.126"></a> +<span class="sourceLineNo">127</span> /**<a name="line.127"></a> +<span class="sourceLineNo">128</span> * Fetch one Procedure from the queue<a name="line.128"></a> +<span class="sourceLineNo">129</span> * NOTE: this method is called with the sched lock held.<a name="line.129"></a> +<span class="sourceLineNo">130</span> * @return the Procedure to execute, or null if nothing is available.<a name="line.130"></a> +<span class="sourceLineNo">131</span> */<a name="line.131"></a> +<span class="sourceLineNo">132</span> protected abstract Procedure dequeue();<a name="line.132"></a> +<span class="sourceLineNo">133</span><a name="line.133"></a> +<span class="sourceLineNo">134</span> @Override<a name="line.134"></a> +<span class="sourceLineNo">135</span> public Procedure poll() {<a name="line.135"></a> +<span class="sourceLineNo">136</span> return poll(-1);<a name="line.136"></a> +<span class="sourceLineNo">137</span> }<a name="line.137"></a> +<span class="sourceLineNo">138</span><a name="line.138"></a> +<span class="sourceLineNo">139</span> @Override<a name="line.139"></a> +<span class="sourceLineNo">140</span> public Procedure poll(long timeout, TimeUnit unit) {<a name="line.140"></a> +<span class="sourceLineNo">141</span> return poll(unit.toNanos(timeout));<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> @edu.umd.cs.findbugs.annotations.SuppressWarnings("WA_AWAIT_NOT_IN_LOOP")<a name="line.144"></a> +<span class="sourceLineNo">145</span> public Procedure poll(final long nanos) {<a name="line.145"></a> +<span class="sourceLineNo">146</span> schedLock();<a name="line.146"></a> +<span class="sourceLineNo">147</span> try {<a name="line.147"></a> +<span class="sourceLineNo">148</span> if (!running) {<a name="line.148"></a> +<span class="sourceLineNo">149</span> LOG.debug("the scheduler is not running");<a name="line.149"></a> +<span class="sourceLineNo">150</span> return null;<a name="line.150"></a> +<span class="sourceLineNo">151</span> }<a name="line.151"></a> +<span class="sourceLineNo">152</span><a name="line.152"></a> +<span class="sourceLineNo">153</span> if (!queueHasRunnables()) {<a name="line.153"></a> +<span class="sourceLineNo">154</span> // WA_AWAIT_NOT_IN_LOOP: we are not in a loop because we want the caller<a name="line.154"></a> +<span class="sourceLineNo">155</span> // to take decisions after a wake/interruption.<a name="line.155"></a> +<span class="sourceLineNo">156</span> if (nanos < 0) {<a name="line.156"></a> +<span class="sourceLineNo">157</span> schedWaitCond.await();<a name="line.157"></a> +<span class="sourceLineNo">158</span> } else {<a name="line.158"></a> +<span class="sourceLineNo">159</span> schedWaitCond.awaitNanos(nanos);<a name="line.159"></a> +<span class="sourceLineNo">160</span> }<a name="line.160"></a> +<span class="sourceLineNo">161</span> if (!queueHasRunnables()) {<a name="line.161"></a> +<span class="sourceLineNo">162</span> nullPollCalls++;<a name="line.162"></a> +<span class="sourceLineNo">163</span> return null;<a name="line.163"></a> +<span class="sourceLineNo">164</span> }<a name="line.164"></a> +<span class="sourceLineNo">165</span> }<a name="line.165"></a> +<span class="sourceLineNo">166</span><a name="line.166"></a> +<span class="sourceLineNo">167</span> final Procedure pollResult = dequeue();<a name="line.167"></a> +<span class="sourceLineNo">168</span> pollCalls++;<a name="line.168"></a> +<span class="sourceLineNo">169</span> nullPollCalls += (pollResult == null) ? 1 : 0;<a name="line.169"></a> +<span class="sourceLineNo">170</span> return pollResult;<a name="line.170"></a> +<span class="sourceLineNo">171</span> } catch (InterruptedException e) {<a name="line.171"></a> +<span class="sourceLineNo">172</span> Thread.currentThread().interrupt();<a name="line.172"></a> +<span class="sourceLineNo">173</span> nullPollCalls++;<a name="line.173"></a> +<span class="sourceLineNo">174</span> return null;<a name="line.174"></a> +<span class="sourceLineNo">175</span> } finally {<a name="line.175"></a> +<span class="sourceLineNo">176</span> schedUnlock();<a name="line.176"></a> +<span class="sourceLineNo">177</span> }<a name="line.177"></a> +<span class="sourceLineNo">178</span> }<a name="line.178"></a> +<span class="sourceLineNo">179</span><a name="line.179"></a> +<span class="sourceLineNo">180</span> // ==========================================================================<a name="line.180"></a> +<span class="sourceLineNo">181</span> // Utils<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> * Returns the number of elements in this queue.<a name="line.184"></a> +<span class="sourceLineNo">185</span> * NOTE: this method is called with the sched lock held.<a name="line.185"></a> +<span class="sourceLineNo">186</span> * @return the number of elements in this queue.<a name="line.186"></a> +<span class="sourceLineNo">187</span> */<a name="line.187"></a> +<span class="sourceLineNo">188</span> protected abstract int queueSize();<a name="line.188"></a> +<span class="sourceLineNo">189</span><a name="line.189"></a> +<span class="sourceLineNo">190</span> /**<a name="line.190"></a> +<span class="sourceLineNo">191</span> * Returns true if there are procedures available to process.<a name="line.191"></a> +<span class="sourceLineNo">192</span> * NOTE: this method is called with the sched lock held.<a name="line.192"></a> +<span class="sourceLineNo">193</span> * @return true if there are procedures available to process, otherwise false.<a name="line.193"></a> +<span class="sourceLineNo">194</span> */<a name="line.194"></a> +<span class="sourceLineNo">195</span> protected abstract boolean queueHasRunnables();<a name="line.195"></a> +<span class="sourceLineNo">196</span><a name="line.196"></a> +<span class="sourceLineNo">197</span> @Override<a name="line.197"></a> +<span class="sourceLineNo">198</span> public int size() {<a name="line.198"></a> +<span class="sourceLineNo">199</span> schedLock();<a name="line.199"></a> +<span class="sourceLineNo">200</span> try {<a name="line.200"></a> +<span class="sourceLineNo">201</span> return queueSize();<a name="line.201"></a> +<span class="sourceLineNo">202</span> } finally {<a name="line.202"></a> +<span class="sourceLineNo">203</span> schedUnlock();<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> @Override<a name="line.207"></a> +<span class="sourceLineNo">208</span> public boolean hasRunnables() {<a name="line.208"></a> +<span class="sourceLineNo">209</span> schedLock();<a name="line.209"></a> +<span class="sourceLineNo">210</span> try {<a name="line.210"></a> +<span class="sourceLineNo">211</span> return queueHasRunnables();<a name="line.211"></a> +<span class="sourceLineNo">212</span> } finally {<a name="line.212"></a> +<span class="sourceLineNo">213</span> schedUnlock();<a name="line.213"></a> +<span class="sourceLineNo">214</span> }<a name="line.214"></a> +<span class="sourceLineNo">215</span> }<a name="line.215"></a> +<span class="sourceLineNo">216</span><a name="line.216"></a> +<span class="sourceLineNo">217</span> // ============================================================================<a name="line.217"></a> +<span class="sourceLineNo">218</span> // TODO: Metrics<a name="line.218"></a> +<span class="sourceLineNo">219</span> // ============================================================================<a name="line.219"></a> +<span class="sourceLineNo">220</span> public long getPollCalls() {<a name="line.220"></a> +<span class="sourceLineNo">221</span> return pollCalls;<a name="line.221"></a> +<span class="sourceLineNo">222</span> }<a name="line.222"></a> +<span class="sourceLineNo">223</span><a name="line.223"></a> +<span class="sourceLineNo">224</span> public long getNullPollCalls() {<a name="line.224"></a> +<span class="sourceLineNo">225</span> return nullPollCalls;<a name="line.225"></a> +<span class="sourceLineNo">226</span> }<a name="line.226"></a> +<span class="sourceLineNo">227</span><a name="line.227"></a> +<span class="sourceLineNo">228</span> // ==========================================================================<a name="line.228"></a> +<span class="sourceLineNo">229</span> // Procedure Events<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> * Wake up all of the given events.<a name="line.233"></a> +<span class="sourceLineNo">234</span> * Note that we first take scheduler lock and then wakeInternal() synchronizes on the event.<a name="line.234"></a> +<span class="sourceLineNo">235</span> * Access should remain package-private. Use ProcedureEvent class to wake/suspend events.<a name="line.235"></a> +<span class="sourceLineNo">236</span> * @param events the list of events to wake<a name="line.236"></a> +<span class="sourceLineNo">237</span> */<a name="line.237"></a> +<span class="sourceLineNo">238</span> void wakeEvents(ProcedureEvent[] events) {<a name="line.238"></a> <span class="sourceLineNo">239</span> schedLock();<a name="line.239"></a> <span class="sourceLineNo">240</span> try {<a name="line.240"></a> -<span class="sourceLineNo">241</span> int waitingCount = 0;<a name="line.241"></a> -<span class="sourceLineNo">242</span> for (int i = 0; i < count; ++i) {<a name="line.242"></a> -<span class="sourceLineNo">243</span> final ProcedureEvent event = events[i];<a name="line.243"></a> -<span class="sourceLineNo">244</span> synchronized (event) {<a name="line.244"></a> -<span class="sourceLineNo">245</span> if (!event.isReady()) {<a name="line.245"></a> -<span class="sourceLineNo">246</span> // Only set ready if we were not ready; i.e. suspended. Otherwise, we double-wake<a name="line.246"></a> -<span class="sourceLineNo">247</span> // on this event and down in wakeWaitingProcedures, we double decrement this<a name="line.247"></a> -<span class="sourceLineNo">248</span> // finish which messes up child procedure accounting.<a name="line.248"></a> -<span class="sourceLineNo">249</span> event.setReady(true);<a name="line.249"></a> -<span class="sourceLineNo">250</span> if (traceEnabled) {<a name="line.250"></a> -<span class="sourceLineNo">251</span> LOG.trace("Unsuspend " + event);<a name="line.251"></a> -<span class="sourceLineNo">252</span> }<a name="line.252"></a> -<span class="sourceLineNo">253</span> waitingCount += wakeWaitingProcedures(event.getSuspendedProcedures());<a name="line.253"></a> -<span class="sourceLineNo">254</span> } else {<a name="line.254"></a> -<span class="sourceLineNo">255</span> ProcedureDeque q = event.getSuspendedProcedures();<a name="line.255"></a> -<span class="sourceLineNo">256</span> if (q != null && !q.isEmpty()) {<a name="line.256"></a> -<span class="sourceLineNo">257</span> LOG.warn("Q is not empty! size=" + q.size() + "; PROCESSING...");<a name="line.257"></a> -<span class="sourceLineNo">258</span> waitingCount += wakeWaitingProcedures(event.getSuspendedProcedures());<a name="line.258"></a> -<span class="sourceLineNo">259</span> }<a name="line.259"></a> -<span class="sourceLineNo">260</span> }<a name="line.260"></a> -<span class="sourceLineNo">261</span> }<a name="line.261"></a> -<span class="sourceLineNo">262</span> }<a name="line.262"></a> -<span class="sourceLineNo">263</span> wakePollIfNeeded(waitingCount);<a name="line.263"></a> -<span class="sourceLineNo">264</span> } finally {<a name="line.264"></a> -<span class="sourceLineNo">265</span> schedUnlock();<a name="line.265"></a> -<span class="sourceLineNo">266</span> }<a name="line.266"></a> -<span class="sourceLineNo">267</span> }<a name="line.267"></a> -<span class="sourceLineNo">268</span><a name="line.268"></a> -<span class="sourceLineNo">269</span> /**<a name="line.269"></a> -<span class="sourceLineNo">270</span> * Wakes up given waiting procedures by pushing them back into scheduler queues.<a name="line.270"></a> -<span class="sourceLineNo">271</span> * @return size of given {@code waitQueue}.<a name="line.271"></a> -<span class="sourceLineNo">272</span> */<a name="line.272"></a> -<span class="sourceLineNo">273</span> protected int wakeWaitingProcedures(final ProcedureDeque waitQueue) {<a name="line.273"></a> -<span class="sourceLineNo">274</span> int count = waitQueue.size();<a name="line.274"></a> -<span class="sourceLineNo">275</span> // wakeProcedure adds to the front of queue, so we start from last in the<a name="line.275"></a> -<span class="sourceLineNo">276</span> // waitQueue' queue, so that the procedure which was added first goes in the front for<a name="line.276"></a> -<span class="sourceLineNo">277</span> // the scheduler queue.<a name="line.277"></a> -<span class="sourceLineNo">278</span> while (!waitQueue.isEmpty()) {<a name="line.278"></a> -<span class="sourceLineNo">279</span> wakeProcedure(waitQueue.removeLast());<a name="line.279"></a> -<span class="sourceLineNo">280</span> }<a name="line.280"></a> -<span class="sourceLineNo">281</span> return count;<a name="line.281"></a> -<span class="sourceLineNo">282</span> }<a name="line.282"></a> -<span class="sourceLineNo">283</span><a name="line.283"></a> -<span class="sourceLineNo">284</span> protected void waitProcedure(final ProcedureDeque waitQueue, final Procedure proc) {<a name="line.284"></a> -<span class="sourceLineNo">285</span> waitQueue.addLast(proc);<a name="line.285"></a> -<span class="sourceLineNo">286</span> }<a name="line.286"></a> -<span class="sourceLineNo">287</span><a name="line.287"></a> -<span class="sourceLineNo">288</span> protected void wakeProcedure(final Procedure procedure) {<a name="line.288"></a> -<span class="sourceLineNo">289</span> if (LOG.isTraceEnabled()) LOG.trace("Wake " + procedure);<a name="line.289"></a> -<span class="sourceLineNo">290</span> push(procedure, /* addFront= */ true, /* notify= */false);<a name="line.290"></a> -<span class="sourceLineNo">291</span> }<a name="line.291"></a> -<span class="sourceLineNo">292</span><a name="line.292"></a> -<span class="sourceLineNo">293</span> // ==========================================================================<a name="line.293"></a> -<span class="sourceLineNo">294</span> // Internal helpers<a name="line.294"></a> -<span class="sourceLineNo">295</span> // ==========================================================================<a name="line.295"></a> -<span class="sourceLineNo">296</span> protected void schedLock() {<a name="line.296"></a> -<span class="sourceLineNo">297</span> schedulerLock.lock();<a name="line.297"></a> -<span class="sourceLineNo">298</span> }<a name="line.298"></a> -<span class="sourceLineNo">299</span><a name="line.299"></a> -<span class="sourceLineNo">300</span> protected void schedUnlock() {<a name="line.300"></a> -<span class="sourceLineNo">301</span> schedulerLock.unlock();<a name="line.301"></a> -<span class="sourceLineNo">302</span> }<a name="line.302"></a> -<span class="sourceLineNo">303</span><a name="line.303"></a> -<span class="sourceLineNo">304</span> protected void wakePollIfNeeded(final int waitingCount) {<a name="line.304"></a> -<span class="sourceLineNo">305</span> if (waitingCount <= 0) return;<a name="line.305"></a> -<span class="sourceLineNo">306</span> if (waitingCount == 1) {<a name="line.306"></a> -<span class="sourceLineNo">307</span> schedWaitCond.signal();<a name="line.307"></a> -<span class="sourceLineNo">308</span> } else {<a name="line.308"></a> -<span class="sourceLineNo">309</span> schedWaitCond.signalAll();<a name="line.309"></a> -<span class="sourceLineNo">310</span> }<a name="line.310"></a> -<span class="sourceLineNo">311</span> }<a name="line.311"></a> -<span class="sourceLineNo">312</span>}<a name="line.312"></a> +<span class="sourceLineNo">241</span> for (ProcedureEvent event : events) {<a name="line.241"></a> +<span class="sourceLineNo">242</span> if (event == null) {<a name="line.242"></a> +<span class="sourceLineNo">243</span> continue;<a name="line.243"></a> +<span class="sourceLineNo">244</span> }<a name="line.244"></a> +<span class="sourceLineNo">245</span> event.wakeInternal(this);<a name="line.245"></a> +<span class="sourceLineNo">246</span> }<a name="line.246"></a> +<span class="sourceLineNo">247</span> } finally {<a name="line.247"></a> +<span class="sourceLineNo">248</span> schedUnlock();<a name="line.248"></a> +<span class="sourceLineNo">249</span> }<a name="line.249"></a> +<span class="sourceLineNo">250</span> }<a name="line.250"></a> +<span class="sourceLineNo">251</span><a name="line.251"></a> +<span class="sourceLineNo">252</span> /**<a name="line.252"></a> +<span class="sourceLineNo">253</span> * Wakes up given waiting procedures by pushing them back into scheduler queues.<a name="line.253"></a> +<span class="sourceLineNo">254</span> * @return size of given {@code waitQueue}.<a name="line.254"></a> +<span class="sourceLineNo">255</span> */<a name="line.255"></a> +<span class="sourceLineNo">256</span> protected int wakeWaitingProcedures(final ProcedureDeque waitQueue) {<a name="line.256"></a> +<span class="sourceLineNo">257</span> int count = waitQueue.size();<a name="line.257"></a> +<span class="sourceLineNo">258</span> // wakeProcedure adds to the front of queue, so we start from last in the<a name="line.258"></a> +<span class="sourceLineNo">259</span> // waitQueue' queue, so that the procedure which was added first goes in the front for<a name="line.259"></a> +<span class="sourceLineNo">260</span> // the scheduler queue.<a name="line.260"></a> +<span class="sourceLineNo">261</span> addFront(waitQueue.descendingIterator());<a name="line.261"></a> +<span class="sourceLineNo">262</span> waitQueue.clear();<a name="line.262"></a> +<span class="sourceLineNo">263</span> return count;<a name="line.263"></a> +<span class="sourceLineNo">264</span> }<a name="line.264"></a> +<span class="sourceLineNo">265</span><a name="line.265"></a> +<span class="sourceLineNo">266</span> protected void waitProcedure(final ProcedureDeque waitQueue, final Procedure proc) {<a name="line.266"></a> +<span class="sourceLineNo">267</span> waitQueue.addLast(proc);<a name="line.267"></a> +<span class="sourceLineNo">268</span> }<a name="line.268"></a> +<span class="sourceLineNo">269</span><a name="line.269"></a> +<span class="sourceLineNo">270</span> protected void wakeProcedure(final Procedure procedure) {<a name="line.270"></a> +<span class="sourceLineNo">271</span> if (LOG.isTraceEnabled()) LOG.trace("Wake " + procedure);<a name="line.271"></a> +<span class="sourceLineNo">272</span> push(procedure, /* addFront= */ true, /* notify= */false);<a name="line.272"></a> +<span class="sourceLineNo">273</span> }<a name="line.273"></a> +<span class="sourceLineNo">274</span><a name="line.274"></a> +<span class="sourceLineNo">275</span><a name="line.275"></a> +<span class="sourceLineNo">276</span> // ==========================================================================<a name="line.276"></a> +<span class="sourceLineNo">277</span> // Internal helpers<a name="line.277"></a> +<span class="sourceLineNo">278</span> // ==========================================================================<a name="line.278"></a> +<span class="sourceLineNo">279</span> protected void schedLock() {<a name="line.279"></a> +<span class="sourceLineNo">280</span> schedulerLock.lock();<a name="line.280"></a> +<span class="sourceLineNo">281</span> }<a name="line.281"></a> +<span class="sourceLineNo">282</span><a name="line.282"></a> +<span class="sourceLineNo">283</span> protected void schedUnlock() {<a name="line.283"></a> +<span class="sourceLineNo">284</span> schedulerLock.unlock();<a name="line.284"></a> +<span class="sourceLineNo">285</span> }<a name="line.285"></a> +<span class="sourceLineNo">286</span><a name="line.286"></a> +<span class="sourceLineNo">287</span> protected void wakePollIfNeeded(final int waitingCount) {<a name="line.287"></a> +<span class="sourceLineNo">288</span> if (waitingCount <= 0) return;<a name="line.288"></a> +<span class="sourceLineNo">289</span> if (waitingCount == 1) {<a name="line.289"></a> +<span class="sourceLineNo">290</span> schedWaitCond.signal();<a name="line.290"></a> +<span class="sourceLineNo">291</span> } else {<a name="line.291"></a> +<span class="sourceLineNo">292</span> schedWaitCond.signalAll();<a name="line.292"></a> +<span class="sourceLineNo">293</span> }<a name="line.293"></a> +<span class="sourceLineNo">294</span> }<a name="line.294"></a> +<span class="sourceLineNo">295</span>}<a name="line.295"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b9722a17/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureEvent.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureEvent.html b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureEvent.html index 87ea6b3..6d4f894 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureEvent.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/procedure2/ProcedureEvent.html @@ -6,7 +6,7 @@ </head> <body> <div class="sourceContainer"> -<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a> +<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> @@ -26,41 +26,110 @@ <span class="sourceLineNo">018</span><a name="line.18"></a> <span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.procedure2;<a name="line.19"></a> <span class="sourceLineNo">020</span><a name="line.20"></a> -<span class="sourceLineNo">021</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.21"></a> -<span class="sourceLineNo">022</span><a name="line.22"></a> -<span class="sourceLineNo">023</span>/**<a name="line.23"></a> -<span class="sourceLineNo">024</span> * Basic ProcedureEvent that contains an "object", which can be a description or a reference to the<a name="line.24"></a> -<span class="sourceLineNo">025</span> * resource to wait on, and a queue for suspended procedures.<a name="line.25"></a> -<span class="sourceLineNo">026</span> * Access to suspended procedures queue is 'synchronized' on the event itself.<a name="line.26"></a> -<span class="sourceLineNo">027</span> */<a name="line.27"></a> -<span class="sourceLineNo">028</span>@InterfaceAudience.Private<a name="line.28"></a> -<span class="sourceLineNo">029</span>public class ProcedureEvent<T> {<a name="line.29"></a> -<span class="sourceLineNo">030</span> private final T object;<a name="line.30"></a> -<span class="sourceLineNo">031</span> private boolean ready = false;<a name="line.31"></a> -<span class="sourceLineNo">032</span> private ProcedureDeque suspendedProcedures = new ProcedureDeque();<a name="line.32"></a> -<span class="sourceLineNo">033</span><a name="line.33"></a> -<span class="sourceLineNo">034</span> public ProcedureEvent(final T object) {<a name="line.34"></a> -<span class="sourceLineNo">035</span> this.object = object;<a name="line.35"></a> -<span class="sourceLineNo">036</span> }<a name="line.36"></a> -<span class="sourceLineNo">037</span><a name="line.37"></a> -<span class="sourceLineNo">038</span> public synchronized boolean isReady() {<a name="line.38"></a> -<span class="sourceLineNo">039</span> return ready;<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> synchronized void setReady(final boolean isReady) {<a name="line.42"></a> -<span class="sourceLineNo">043</span> this.ready = isReady;<a name="line.43"></a> -<span class="sourceLineNo">044</span> }<a name="line.44"></a> -<span class="sourceLineNo">045</span><a name="line.45"></a> -<span class="sourceLineNo">046</span> public ProcedureDeque getSuspendedProcedures() {<a name="line.46"></a> -<span class="sourceLineNo">047</span> return suspendedProcedures;<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> @Override<a name="line.50"></a> -<span class="sourceLineNo">051</span> public String toString() {<a name="line.51"></a> -<span class="sourceLineNo">052</span> return getClass().getSimpleName() + " for " + object + ", ready=" + isReady() +<a name="line.52"></a> -<span class="sourceLineNo">053</span> ", " + getSuspendedProcedures();<a name="line.53"></a> -<span class="sourceLineNo">054</span> }<a name="line.54"></a> -<span class="sourceLineNo">055</span>}<a name="line.55"></a> +<span class="sourceLineNo">021</span>import org.apache.commons.logging.Log;<a name="line.21"></a> +<span class="sourceLineNo">022</span>import org.apache.commons.logging.LogFactory;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.23"></a> +<span class="sourceLineNo">024</span><a name="line.24"></a> +<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.25"></a> +<span class="sourceLineNo">026</span><a name="line.26"></a> +<span class="sourceLineNo">027</span>/**<a name="line.27"></a> +<span class="sourceLineNo">028</span> * Basic ProcedureEvent that contains an "object", which can be a description or a reference to the<a name="line.28"></a> +<span class="sourceLineNo">029</span> * resource to wait on, and a queue for suspended procedures.<a name="line.29"></a> +<span class="sourceLineNo">030</span> */<a name="line.30"></a> +<span class="sourceLineNo">031</span>@InterfaceAudience.Private<a name="line.31"></a> +<span class="sourceLineNo">032</span>public class ProcedureEvent<T> {<a name="line.32"></a> +<span class="sourceLineNo">033</span> private static final Log LOG = LogFactory.getLog(ProcedureEvent.class);<a name="line.33"></a> +<span class="sourceLineNo">034</span><a name="line.34"></a> +<span class="sourceLineNo">035</span> private final T object;<a name="line.35"></a> +<span class="sourceLineNo">036</span> private boolean ready = false;<a name="line.36"></a> +<span class="sourceLineNo">037</span> private ProcedureDeque suspendedProcedures = new ProcedureDeque();<a name="line.37"></a> +<span class="sourceLineNo">038</span><a name="line.38"></a> +<span class="sourceLineNo">039</span> public ProcedureEvent(final T object) {<a name="line.39"></a> +<span class="sourceLineNo">040</span> this.object = object;<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> public synchronized boolean isReady() {<a name="line.43"></a> +<span class="sourceLineNo">044</span> return ready;<a name="line.44"></a> +<span class="sourceLineNo">045</span> }<a name="line.45"></a> +<span class="sourceLineNo">046</span><a name="line.46"></a> +<span class="sourceLineNo">047</span> /**<a name="line.47"></a> +<span class="sourceLineNo">048</span> * @return true if event is not ready and adds procedure to suspended queue, else returns false.<a name="line.48"></a> +<span class="sourceLineNo">049</span> */<a name="line.49"></a> +<span class="sourceLineNo">050</span> public synchronized boolean suspendIfNotReady(Procedure proc) {<a name="line.50"></a> +<span class="sourceLineNo">051</span> if (!ready) {<a name="line.51"></a> +<span class="sourceLineNo">052</span> suspendedProcedures.addLast(proc);<a name="line.52"></a> +<span class="sourceLineNo">053</span> }<a name="line.53"></a> +<span class="sourceLineNo">054</span> return !ready;<a name="line.54"></a> +<span class="sourceLineNo">055</span> }<a name="line.55"></a> +<span class="sourceLineNo">056</span><a name="line.56"></a> +<span class="sourceLineNo">057</span> /** Mark the event as not ready. */<a name="line.57"></a> +<span class="sourceLineNo">058</span> public synchronized void suspend() {<a name="line.58"></a> +<span class="sourceLineNo">059</span> ready = false;<a name="line.59"></a> +<span class="sourceLineNo">060</span> if (LOG.isTraceEnabled()) {<a name="line.60"></a> +<span class="sourceLineNo">061</span> LOG.trace("Suspend " + toString());<a name="line.61"></a> +<span class="sourceLineNo">062</span> }<a name="line.62"></a> +<span class="sourceLineNo">063</span> }<a name="line.63"></a> +<span class="sourceLineNo">064</span><a name="line.64"></a> +<span class="sourceLineNo">065</span> /**<a name="line.65"></a> +<span class="sourceLineNo">066</span> * Wakes up the suspended procedures by pushing them back into scheduler queues and sets the<a name="line.66"></a> +<span class="sourceLineNo">067</span> * event as ready.<a name="line.67"></a> +<span class="sourceLineNo">068</span> * See {@link #wakeInternal(AbstractProcedureScheduler)} for why this is not synchronized.<a name="line.68"></a> +<span class="sourceLineNo">069</span> */<a name="line.69"></a> +<span class="sourceLineNo">070</span> public void wake(AbstractProcedureScheduler procedureScheduler) {<a name="line.70"></a> +<span class="sourceLineNo">071</span> procedureScheduler.wakeEvents(new ProcedureEvent[]{this});<a name="line.71"></a> +<span class="sourceLineNo">072</span> }<a name="line.72"></a> +<span class="sourceLineNo">073</span><a name="line.73"></a> +<span class="sourceLineNo">074</span> /**<a name="line.74"></a> +<span class="sourceLineNo">075</span> * Wakes up all the given events and puts the procedures waiting on them back into<a name="line.75"></a> +<span class="sourceLineNo">076</span> * ProcedureScheduler queues.<a name="line.76"></a> +<span class="sourceLineNo">077</span> */<a name="line.77"></a> +<span class="sourceLineNo">078</span> public static void wakeEvents(AbstractProcedureScheduler scheduler, ProcedureEvent ... events) {<a name="line.78"></a> +<span class="sourceLineNo">079</span> scheduler.wakeEvents(events);<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> /**<a name="line.82"></a> +<span class="sourceLineNo">083</span> * Only to be used by ProcedureScheduler implementations.<a name="line.83"></a> +<span class="sourceLineNo">084</span> * Reason: To wake up multiple events, locking sequence is<a name="line.84"></a> +<span class="sourceLineNo">085</span> * schedLock --> synchronized (event)<a name="line.85"></a> +<span class="sourceLineNo">086</span> * To wake up an event, both schedLock() and synchronized(event) are required.<a name="line.86"></a> +<span class="sourceLineNo">087</span> * The order is schedLock() --> synchronized(event) because when waking up multiple events<a name="line.87"></a> +<span class="sourceLineNo">088</span> * simultaneously, we keep the scheduler locked until all procedures suspended on these events<a name="line.88"></a> +<span class="sourceLineNo">089</span> * have been added back to the queue (Maybe it's not required? Evaluate!)<a name="line.89"></a> +<span class="sourceLineNo">090</span> * To avoid deadlocks, we want to keep the locking order same even when waking up single event.<a name="line.90"></a> +<span class="sourceLineNo">091</span> * That's why, {@link #wake(AbstractProcedureScheduler)} above uses the same code path as used<a name="line.91"></a> +<span class="sourceLineNo">092</span> * when waking up multiple events.<a name="line.92"></a> +<span class="sourceLineNo">093</span> * Access should remain package-private.<a name="line.93"></a> +<span class="sourceLineNo">094</span> */<a name="line.94"></a> +<span class="sourceLineNo">095</span> synchronized void wakeInternal(AbstractProcedureScheduler procedureScheduler) {<a name="line.95"></a> +<span class="sourceLineNo">096</span> if (ready && !suspendedProcedures.isEmpty()) {<a name="line.96"></a> +<span class="sourceLineNo">097</span> LOG.warn("Found procedures suspended in a ready event! Size=" + suspendedProcedures.size());<a name="line.97"></a> +<span class="sourceLineNo">098</span> }<a name="line.98"></a> +<span class="sourceLineNo">099</span> ready = true;<a name="line.99"></a> +<span class="sourceLineNo">100</span> if (LOG.isTraceEnabled()) {<a name="line.100"></a> +<span class="sourceLineNo">101</span> LOG.trace("Unsuspend " + toString());<a name="line.101"></a> +<span class="sourceLineNo">102</span> }<a name="line.102"></a> +<span class="sourceLineNo">103</span> // wakeProcedure adds to the front of queue, so we start from last in the<a name="line.103"></a> +<span class="sourceLineNo">104</span> // waitQueue' queue, so that the procedure which was added first goes in the front for<a name="line.104"></a> +<span class="sourceLineNo">105</span> // the scheduler queue.<a name="line.105"></a> +<span class="sourceLineNo">106</span> procedureScheduler.addFront(suspendedProcedures.descendingIterator());<a name="line.106"></a> +<span class="sourceLineNo">107</span> suspendedProcedures.clear();<a name="line.107"></a> +<span class="sourceLineNo">108</span> }<a name="line.108"></a> +<span class="sourceLineNo">109</span><a name="line.109"></a> +<span class="sourceLineNo">110</span> /**<a name="line.110"></a> +<span class="sourceLineNo">111</span> * Access to suspendedProcedures is 'synchronized' on this object, but it's fine to return it<a name="line.111"></a> +<span class="sourceLineNo">112</span> * here for tests.<a name="line.112"></a> +<span class="sourceLineNo">113</span> */<a name="line.113"></a> +<span class="sourceLineNo">114</span> @VisibleForTesting<a name="line.114"></a> +<span class="sourceLineNo">115</span> public ProcedureDeque getSuspendedProcedures() {<a name="line.115"></a> +<span class="sourceLineNo">116</span> return suspendedProcedures;<a name="line.116"></a> +<span class="sourceLineNo">117</span> }<a name="line.117"></a> +<span class="sourceLineNo">118</span><a name="line.118"></a> +<span class="sourceLineNo">119</span> @Override<a name="line.119"></a> +<span class="sourceLineNo">120</span> public String toString() {<a name="line.120"></a> +<span class="sourceLineNo">121</span> return getClass().getSimpleName() + " for " + object + ", ready=" + isReady() +<a name="line.121"></a> +<span class="sourceLineNo">122</span> ", " + suspendedProcedures;<a name="line.122"></a> +<span class="sourceLineNo">123</span> }<a name="line.123"></a> +<span class="sourceLineNo">124</span>}<a name="line.124"></a>
