Move DolphinQt2 to DolphinQt

Source/Core/DolphinQt/QtUtils/SignalDaemon.h

@@ -0,0 +1,31 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QObject>
+
+class QSocketNotifier;
+
+// Loosely based on https://doc.qt.io/qt-5.9/unix-signals.html
+class SignalDaemon : public QObject
+{
+  Q_OBJECT
+
+public:
+  explicit SignalDaemon(QObject* parent);
+  ~SignalDaemon();
+
+  static void HandleInterrupt(int);
+
+signals:
+  void InterruptReceived();
+
+private:
+  void OnNotifierActivated();
+
+  static int s_sigterm_fd[2];
+
+  QSocketNotifier* m_term;
+};