Description Michael Dobrovnik 2011-09-08 07:11:10 EDT

Startup of etty 7.5.0 via xinetd works pretty well,
but even on idle servers 100% CPU is consumed. 

The log shows repetitions of the following NPEs with no pause whatsoever:

2011-09-07 22:15:19.415:WARN:oejs.AbstractConnector:
java.lang.NullPointerException
	at org.eclipse.jetty.server.nio.SelectChannelConnector.accept(SelectChannelConnector.java:98)
	at org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:833)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
	at java.lang.Thread.run(Thread.java:662) 


There seems to be a "tight" loop in AbstractConnector$Acceptor.run, 
because _acceptChannel.accept() returns null. 

The __acceptChannel SelectChannelConnector has been set to nonblocking in
InheritedChannelConnector.open().

Looking at the SelectChannelConnector which is well behaved, 
it can be seen that it sets its selectchannelconnector to blocking;
so it may be appropriate to change line 58 of InheritedChannelConnector to:
                    _acceptChannel.configureBlocking(true);

A brief test with this change showed that the issue dissappeared. 

Thanks for your efforts and of course for Jetty in general!