1 files changed, 18 insertions, 0 deletions
diff --git a/singleapplication_p.cpp b/singleapplication_p.cpp
index a826e8a..c453315 100644
--- a/singleapplication_p.cpp
+++ b/singleapplication_p.cpp
@@ -33,12 +33,20 @@
 #include <cstddef>
 
 #include <QtCore/QDir>
+#include <QtCore/QThread>
 #include <QtCore/QByteArray>
 #include <QtCore/QDataStream>
+#include <QtCore/QElapsedTimer>
 #include <QtCore/QCryptographicHash>
 #include <QtNetwork/QLocalServer>
 #include <QtNetwork/QLocalSocket>
 
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+#include <QtCore/QRandomGenerator>
+#else
+#include <QtCore/QDateTime>
+#endif
+
 #include "singleapplication.h"
 #include "singleapplication_p.h"
 
@@ -434,3 +442,13 @@ void SingleApplicationPrivate::slotClientConnectionClosed( QLocalSocket *closedS
     if( closedSocket->bytesAvailable() > 0 )
         Q_EMIT slotDataAvailable( closedSocket, instanceId  );
 }
+
+void SingleApplicationPrivate::randomSleep()
+{
+#if QT_VERSION >= QT_VERSION_CHECK( 5, 10, 0 )
+    QThread::msleep( QRandomGenerator::global()->bounded( 8u, 18u ));
+#else
+    qsrand( QDateTime::currentMSecsSinceEpoch() % std::numeric_limits<uint>::max() );
+    QThread::msleep( 8 + static_cast <unsigned long>( static_cast <float>( qrand() ) / RAND_MAX * 10 ));
+#endif
+}