commit 5a4e42499a09b5476b1c69c8fb038a6d9e1f67d6
author Ilya Moiseenko <iliamo@cs.ucla.edu> Sun Nov 10 12:54:50 2013 -0800
committer Ilya Moiseenko <iliamo@cs.ucla.edu> Sun Nov 10 12:54:50 2013 -0800
tree f7371f2dc5efd72d8dee48bd9df225aa5e0df527
parent bb985e9ab7fa99130b2845702a3d4501f6b61120

Check for duplicate NDNx Control Centers

Change-Id: I06d7aa71e1162e19f9fb38cada3c3c766b91cfd3

linux/tray-menu.cpp

diff --git a/linux/tray-menu.cpp b/linux/tray-menu.cpp
index b6c405e..3dd006a 100644
--- a/linux/tray-menu.cpp
+++ b/linux/tray-menu.cpp
@@ -30,6 +30,12 @@
     QMainWindow(parent),
     ui(new Ui::TrayMenu)
 {
+    processLookup = new QProcess(this);
+    QStringList arguments;
+    arguments << "-al";
+    connect(processLookup,SIGNAL(finished(int)), this, SLOT(parseProcessLookup()));
+    processLookup->start("ps",arguments);
+
     networkManager = new NetworkManager();
 
     QCoreApplication::setOrganizationName("UCLA");
@@ -547,7 +553,18 @@
 }
 
 
+void TrayMenu::parseProcessLookup()
+{
+    QByteArray stdout = processLookup->readAllStandardOutput();
+    processLookup->deleteLater();
+     
+    QString s = QString(stdout);
 
+    if(s == "")
+      return;
+    else if(s.indexOf("ndnx-control") != s.lastIndexOf("ndnx-control"))
+      qApp->quit();
+}
 
 TrayMenu::~TrayMenu()
 {