From cafd724aaf52f9b38d437918a0ec5f97cf92a742 Mon Sep 17 00:00:00 2001
From: Mathew Sutcliffe <oktal3700@gmail.com>
Date: Sun, 16 Oct 2016 16:57:42 +0100
Subject: [PATCH] Performance: avoid long sleep in processEvents loop.

---
 src/blackcore/application.cpp | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/blackcore/application.cpp b/src/blackcore/application.cpp
index 42019170e..f89a03a17 100644
--- a/src/blackcore/application.cpp
+++ b/src/blackcore/application.cpp
@@ -248,14 +248,10 @@ namespace BlackCore
 
     bool CApplication::waitForStart()
     {
-        // process events return immediatley if nothing is to be processed
-        const QTime dieTime = QTime::currentTime().addMSecs(5000);
-        while (QTime::currentTime() < dieTime && !this->m_started && !this->m_startUpCompleted)
-        {
-            // Alternative: use QEventLoop, which seemed to make the scenario here more complex
-            QCoreApplication::instance()->processEvents(QEventLoop::AllEvents, 250);
-            QThread::msleep(250); // avoid CPU loop overload by "infinite loop"
-        }
+        QEventLoop eventLoop;
+        QTimer::singleShot(5000, &eventLoop, &QEventLoop::quit);
+        connect(this, &CApplication::setupAvailable, &eventLoop, &QEventLoop::quit);
+        eventLoop.exec();
         if (!this->m_startUpCompleted)
         {
             CLogMessage(this).error("Waiting for startup timed out");