com.sun.grizzly.suspendable.SuspendableContextTask Maven / Gradle / Ivy
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package com.sun.grizzly.suspendable;
import com.sun.grizzly.DefaultProtocolChain;
import com.sun.grizzly.SelectionKeyContextTask;
import com.sun.grizzly.util.ThreadAttachment;
import com.sun.grizzly.util.WorkerThread;
/**
* Simple ContextTask used to resume a {@link ProtocolChain} execution
* when the {@link SuspendableFilter} is used.
*
* @author Jeanfrancois Arcand
*/
class SuspendableContextTask extends SelectionKeyContextTask {
protected DefaultProtocolChain protocolChain;
protected int filterStart = 0;
protected ThreadAttachment threadAttachment;
private static final TaskPool taskPool =
new TaskPool() {
@Override
public SuspendableContextTask newInstance() {
return new SuspendableContextTask();
}
};
public static SuspendableContextTask poll(DefaultProtocolChain pc,
ThreadAttachment threadAttachment, int filterStart) {
SuspendableContextTask sct = taskPool.poll();
sct.protocolChain = pc;
sct.filterStart = filterStart;
sct.threadAttachment = threadAttachment;
return sct;
}
public static void offer(SuspendableContextTask contextTask) {
taskPool.offer(contextTask);
}
/**
* Resume the ProtocolChain at positon {@link #filterStart}
* @return null
* @throws java.lang.Exception
*/
protected Object doCall() throws Exception {
((WorkerThread) Thread.currentThread()).attach(threadAttachment);
protocolChain.setContinuousExecution(false);
protocolChain.execute(context, filterStart);
protocolChain.setContinuousExecution(true);
return null;
}
@Override
public void offer() {
offer(this);
}
}