Changeset 33265 in vbox

Timestamp:

Oct 20, 2010 2:34:58 PM (14 years ago)

Author:

vboxsync

Message:

Main: support simple reusable events coalescing

File:

• trunk/src/VBox/Main/EventImpl.cpp (modified) (2 diffs)

trunk/src/VBox/Main/EventImpl.cpp

@@ -825 +825 @@
     uint64_t sinceRead = RTTimeMilliTS() - mLastRead;
     uint32_t queueSize = mQueue.size();
-    if ( (queueSize > 200) || ((queueSize > 100) && (sinceRead > 60 * 1000)))
+    if ( (queueSize > 1000) || ((queueSize > 500) && (sinceRead > 60 * 1000)))
     {
         ::RTCritSectLeave(&mcsQLock);
@@ -831 +831 @@
     }
 
-    mQueue.push_back(aEvent);
+
+    if (queueSize != 0 && mQueue.back() == aEvent)
+        /* if same event is being pushed multiple times - it's reusable event and 
+           we don't really need multiple instances of it in the queue */
+        (void)aEvent;
+    else
+        mQueue.push_back(aEvent);
+
     ::RTCritSectLeave(&mcsQLock);