ENH: Add "exit-after-startup" command line option.

This is useful to "measure" startup time.

Note that part of the implementation of this feature was accidentally
integrated in the previous commit.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@25059 3bd1e089-480b-0410-8dfb-8563597acbee

Author: jcfr

Base/QTGUI/qSlicerCommandOptions.cxx

@@ -65,6 +65,12 @@ bool qSlicerCommandOptions::enableQtTesting()const
 #endif
 }
 
+//-----------------------------------------------------------------------------
+bool qSlicerCommandOptions::exitAfterStartup()const
+{
+  return this->parsedArgs().value("exit-after-startup").toBool();
+}
+
 //-----------------------------------------------------------------------------
 void qSlicerCommandOptions::addArguments()
 {
@@ -91,4 +97,7 @@ void qSlicerCommandOptions::addArguments()
   this->addArgument("qt-testing", "", QVariant::Bool,
                     "Enable QtTesting in the user interface");
 #endif
+
+  this->addArgument("exit-after-startup", "", QVariant::Bool,
+                    "Exit after startup is complete. Useful for measuring startup time");
 }

Base/QTGUI/qSlicerCommandOptions.h

@@ -36,6 +36,7 @@ class Q_SLICER_BASE_QTGUI_EXPORT qSlicerCommandOptions : public qSlicerCoreComma
   Q_PROPERTY(bool noMainWindow READ noMainWindow CONSTANT)
   Q_PROPERTY(bool showPythonInteractor READ showPythonInteractor CONSTANT)
   Q_PROPERTY(bool enableQtTesting READ enableQtTesting CONSTANT)
+  Q_PROPERTY(bool exitAfterStartup READ exitAfterStartup CONSTANT)
 public:
   typedef qSlicerCoreCommandOptions Superclass;
   qSlicerCommandOptions();
@@ -51,6 +52,8 @@ class Q_SLICER_BASE_QTGUI_EXPORT qSlicerCommandOptions : public qSlicerCoreComma
 
   bool enableQtTesting()const;
 
+  bool exitAfterStartup()const;
+
 protected:
   virtual void addArguments();