Reduce amount of tracepoints required for event tracking

Encode the consumed/filtered state in the _exit tracepoint and remove
the separate tracking of receiver event handling. Combined, this
reduces the size of the trace file.

Change-Id: Icb3cb2dd47798543905cea450046d6fad559a15b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 9 insertions, 11 deletions

diff --git a/src/corelib/kernel/qcoreapplication.cpp b/src/corelib/kernel/qcoreapplication.cpp
index 596941b5a9..e5f39a8d35 100644
--- a/src/corelib/kernel/qcoreapplication.cpp
+++ b/src/corelib/kernel/qcoreapplication.cpp
@@ -1197,28 +1197,26 @@ bool QCoreApplicationPrivate::notify_helper(QObject *receiver, QEvent * event)
 {
     // Note: when adjusting the tracepoints in here
     // consider adjusting QApplicationPrivate::notify_helper too.
-    Q_TRACE_SCOPE(QCoreApplication_notify, receiver, event, event->type());
+    Q_TRACE(QCoreApplication_notify_entry, receiver, event, event->type());
+    bool consumed = false;
+    bool filtered = false;
+    Q_TRACE_EXIT(QCoreApplication_notify_exit, consumed, filtered);
 
     // send to all application event filters (only does anything in the main thread)
     if (QCoreApplication::self
             && receiver->d_func()->threadData->thread == mainThread()
             && QCoreApplication::self->d_func()->sendThroughApplicationEventFilters(receiver, event)) {
-        Q_TRACE(QCoreApplication_notify_event_filtered, receiver, event, event->type());
-        return true;
+        filtered = true;
+        return filtered;
     }
     // send to all receiver event filters
     if (sendThroughObjectEventFilters(receiver, event)) {
-        Q_TRACE(QCoreApplication_notify_event_filtered, receiver, event, event->type());
-        return true;
+        filtered = true;
+        return filtered;
     }
 
-    Q_TRACE(QCoreApplication_notify_before_delivery, receiver, event, event->type());
-
     // deliver the event
-    const bool consumed = receiver->event(event);
-
-    Q_TRACE(QCoreApplication_notify_after_delivery, receiver, event, event->type(), consumed);
-
+    consumed = receiver->event(event);
     return consumed;
 }