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Bug 470727 - Thread Starvation of selector wakeups. 

Added comment on running non-blocking code immediately.
This commit is contained in:
Simone Bordet 2015-07-08 12:48:53 +02:00
parent 4e3b400550
commit f62305b5a5
1 changed files with 11 additions and 8 deletions
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15
jetty-io/src/main/java/org/eclipse/jetty/io/SelectChannelEndPoint.java
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@ -100,20 +100,23 @@ public class SelectChannelEndPoint extends ChannelEndPoint implements ManagedSel
if (LOG.isDebugEnabled())
LOG.debug("onSelected {}->{} for {}", oldInterestOps, newInterestOps, this);
boolean readable = (readyOps & SelectionKey.OP_READ) != 0;
boolean writable = (readyOps & SelectionKey.OP_WRITE) != 0;
// Call non blocking directly
// Run non-blocking code immediately.
// This producer knows that this non-blocking code is special
// and that it must be run in this thread and not fed to the
// ExecutionStrategy, which could not have any thread to run these
// tasks (or it may starve forever just after having run them).
if (readable && getFillInterest().isCallbackNonBlocking())
{
getFillInterest().fillable();
readable=false;
_runFillable.run();
readable = false;
}
if (writable && getWriteFlusher().isCallbackNonBlocking())
{
getWriteFlusher().completeWrite();
writable=false;
_runCompleteWrite.run();
writable = false;
}
// return task to complete the job