add a new stat to AES

Signed-off-by: Ludovic Orban <[email protected]>

Author: lorban

jetty-core/jetty-util/src/main/java/org/eclipse/jetty/util/thread/strategy/AdaptiveExecutionStrategy.java

@@ -130,6 +130,7 @@ private enum SubStrategy
     private final LongAdder _picMode = new LongAdder();
     private final LongAdder _pecMode = new LongAdder();
     private final LongAdder _epcMode = new LongAdder();
+    private final LongAdder _epcProduce = new LongAdder();
     private final Producer _producer;
     private final Executor _executor;
     private final TryExecutor _tryExecutor;
@@ -460,6 +461,7 @@ private boolean consumeTask(Runnable task, SubStrategy subStrategy)
                         // or it may take over if we subsequently do another EPC consumption.
                         if (!_state.compareAndSet(biState, pending, PRODUCING))
                             continue;
+                        _epcProduce.increment();
                         return true;
                     }
 
@@ -601,6 +603,12 @@ public long getEPCTasksConsumed()
         return _epcMode.longValue();
     }
 
+    @ManagedAttribute(value = "number of times a EPC thread produces again", readonly = true)
+    public long getEPCProduceCount()
+    {
+        return _epcProduce.longValue();
+    }
+
     @ManagedAttribute(value = "whether this execution strategy is idle", readonly = true)
     public boolean isIdle()
     {
@@ -663,6 +671,8 @@ private void getState(StringBuilder builder, long biState)
         builder.append(",pec=");
         builder.append(getPECTasksExecuted());
         builder.append(",epc=");
+        builder.append(getEPCProduceCount());
+        builder.append("/");
         builder.append(getEPCTasksConsumed());
         builder.append("]");
         builder.append("@");