Fixed AsyncIO double dispatch

jetty-http2/http2-server/src/main/java/org/eclipse/jetty/http2/server/HttpInputOverHTTP2.java

@@ -33,6 +33,6 @@ public class HttpInputOverHTTP2 extends HttpInput
     @Override
     protected void onReadPossible()
     {
-        _httpChannelState.onReadPossible();
+        _httpChannelState.onReadPossible(true);
     }
 }

jetty-io/src/main/java/org/eclipse/jetty/io/FillInterest.java

@@ -60,6 +60,8 @@ public abstract class FillInterest
         }
         try
         {
+            if (LOG.isDebugEnabled())
+                LOG.debug("{} register {}",this,callback);
             needsFillInterest();
         }
         catch (Throwable e)
@@ -78,7 +80,7 @@ public abstract class FillInterest
             LOG.debug("{} fillable {}",this,callback);
         if (callback != null && _interested.compareAndSet(callback, null))
             callback.succeeded();
-        else
+        else if (LOG.isDebugEnabled())
             LOG.debug("{} lost race {}",this,callback);
     }
 

jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannel.java

@@ -107,7 +107,7 @@ public class HttpChannel implements Runnable, HttpOutput.Interceptor
             @Override
             protected void onReadPossible()
             {
-                getState().onReadPossible();
+                getState().onReadPossible(true);
             }            
         };
     }

jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannelState.java

@@ -716,7 +716,7 @@ public class HttpChannelState
         _channel.getRequest().setAttribute(name,attribute);
     }
 
-    public void onReadPossible()
+    public void onReadPossible(boolean execute)
     {
         boolean handle=false;
 
@@ -730,7 +730,7 @@ public class HttpChannelState
             }
         }
 
-        if (handle)
+        if (execute && handle)
             // TODO, do we need to execute or just run?
             _channel.execute(_channel);
     }

jetty-server/src/main/java/org/eclipse/jetty/server/HttpInputOverHTTP.java

@@ -51,6 +51,6 @@ public class HttpInputOverHTTP extends HttpInput
     @Override 
     protected void onReadPossible()
     {
-        _httpConnection.getHttpChannel().getState().onReadPossible();
+        _httpConnection.getHttpChannel().getState().onReadPossible(false); // Will be handled by async callback
     }
 }

jetty-util/src/main/java/org/eclipse/jetty/util/thread/QueuedThreadPool.java

@@ -356,6 +356,8 @@ public class QueuedThreadPool extends AbstractLifeCycle implements SizedThreadPo
     @Override
     public void execute(Runnable job)
     {
+        if (LOG.isDebugEnabled())
+            LOG.debug("queue {}",job);
         if (!isRunning() || !_jobs.offer(job))
         {
             LOG.warn("{} rejected {}", this, job);
@@ -552,7 +554,11 @@ public class QueuedThreadPool extends AbstractLifeCycle implements SizedThreadPo
                     // Job loop
                     while (job != null && isRunning())
                     {
+                        if (LOG.isDebugEnabled())
+                            LOG.debug("run {}",job);
                         runJob(job);
+                        if (LOG.isDebugEnabled())
+                            LOG.debug("ran {}",job);
                         if (Thread.interrupted())
                         {
                             ignore=true;