Added watch function for child process

src/xboxdrv_main.cpp

@@ -200,6 +200,7 @@ XboxdrvMain::run()
       if (!m_opts.exec.empty())
       {
         pid = spawn_exe(m_opts.exec);
+        g_child_watch_add(pid, &XboxdrvMain::on_child_watch_wrap, this);
       }
 
       log_debug("launching main loop");
@@ -213,6 +214,13 @@ XboxdrvMain::run()
   }
 }
 
+void
+XboxdrvMain::on_child_watch(GPid pid, gint status)
+{
+  log_info("child processes exited with status: " << status);
+  shutdown();
+}
+
 void
 XboxdrvMain::print_info(libusb_device* dev, const XPadDevice& dev_type, const Options& opts) const
 {

src/xboxdrv_main.hpp

@@ -71,6 +71,11 @@ private:
 
   static void on_sigint(int);
 
+  void on_child_watch(GPid pid, gint status);
+  static void on_child_watch_wrap(GPid pid, gint status, gpointer data) {
+    static_cast<XboxdrvMain*>(data)->on_child_watch(pid, status);
+  }
+
 private:
   XboxdrvMain(const XboxdrvMain&);
   XboxdrvMain& operator=(const XboxdrvMain&);