Allow to create a custom event dispatcher for specific QThreads.

QAbstractEventDispatcher() does no longer install itself into the current
thread.  Instead the new methods QThread::setEventDispatcher() and
QCoreApplication::setEventDispatcher() allow to install a custom event
dispatcher into any QThread as long as there is no default event dispatcher
created yet.  That is, before the thread has been started with
QThread::start() or, in case of the main thread, before QCoreApplication has
been instantiated.

Change-Id: I7367e13d8d8aebed5a5651260bb69b8818eb1b90
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp
index 46bc641d16..8c6fefcfd7 100644
--- a/src/corelib/thread/qthread_unix.cpp
+++ b/src/corelib/thread/qthread_unix.cpp
@@ -289,8 +289,10 @@ void *QThreadPrivate::start(void *arg)
         data->quitNow = thr->d_func()->exited;
     }
 
-    // ### TODO: allow the user to create a custom event dispatcher
-    createEventDispatcher(data);
+    if (data->eventDispatcher) // custom event dispatcher set?
+        data->eventDispatcher->startingUp();
+    else
+        createEventDispatcher(data);
 
     emit thr->started();
     pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);