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package bboss.org.jgroups.util;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.ThreadPoolExecutor;
/**
* ShutdownRejectedExecutionHandler is a decorator RejectedExecutionHandler used
* in all JGroups ThreadPoolExecutor(s). Default RejectedExecutionHandler raises
* RuntimeException when a task is submitted to ThreadPoolExecutor that has been
* shutdown. ShutdownRejectedExecutionHandler instead logs only a warning
* message.
*
* @author Vladimir Blagojevic
* @see ThreadPoolExecutor
* @see RejectedExecutionHandler
* @version $Id: ShutdownRejectedExecutionHandler.java,v 1.101 2008/04/08
* 14:49:05 belaban Exp $
*/
public class ShutdownRejectedExecutionHandler implements RejectedExecutionHandler {
RejectedExecutionHandler handler;
public ShutdownRejectedExecutionHandler(RejectedExecutionHandler handler) {
super();
if(handler == null)
throw new NullPointerException("RejectedExecutionHandler cannot be null");
this.handler=handler;
}
public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
if(!executor.isShutdown()) {
handler.rejectedExecution(r, executor);
}
}
}