From e9175593193d70cc421cb9730eeb3b6d0c3fff8c Mon Sep 17 00:00:00 2001
From: Tim Jenssen <tim.jenssen@digia.com>
Date: Tue, 5 Aug 2014 16:33:22 +0200
Subject: [PATCH] QmlDesigner: prioritize puppet processes a bit

Change-Id: I97d846cb46851f8f3067d839aeb0b856298ed0c0
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
---
 .../instances/qt5nodeinstanceclientproxy.cpp      | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/qt5nodeinstanceclientproxy.cpp b/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/qt5nodeinstanceclientproxy.cpp
index 8668e9b3b8d..3f6077920c1 100644
--- a/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/qt5nodeinstanceclientproxy.cpp
+++ b/share/qtcreator/qml/qmlpuppet/qml2puppet/instances/qt5nodeinstanceclientproxy.cpp
@@ -38,11 +38,26 @@
 
 #include <designersupport.h>
 
+#if defined(Q_OS_UNIX)
+#include <unistd.h>
+#elif defined(Q_OS_WIN)
+#include <windows.h>
+#endif
+
 namespace QmlDesigner {
+static void prioritizeDown()
+{
+#if defined(Q_OS_UNIX)
+    nice(19);
+#elif defined(Q_OS_WIN)
+    SetPriorityClass(GetCurrentProcess(), BELOW_NORMAL_PRIORITY_CLASS);
+#endif
+}
 
 Qt5NodeInstanceClientProxy::Qt5NodeInstanceClientProxy(QObject *parent) :
     NodeInstanceClientProxy(parent)
 {
+    prioritizeDown();
     DesignerSupport::activateDesignerWindowManager();
     if (QCoreApplication::arguments().at(1) == QLatin1String("--readcapturedstream")) {
         qputenv("DESIGNER_DONT_USE_SHARED_MEMORY", "1");