The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 #ifndef WIDGET_PUBLIC_WIDGETTRACEEVENT_H_

 #define WIDGET_PUBLIC_WIDGETTRACEEVENT_H_

 namespace mozilla {

 // Perform any required initialization in the widget backend for

 // event tracing. Return true if initialization was successful.

 bool InitWidgetTracing();

 // Perform any required cleanup in the widget backend for event tracing.

 void CleanUpWidgetTracing();

 // Fire a tracer event at the UI-thread event loop, and block until

 // the event is processed. This should only be called by

 // a thread that's not the UI thread.

 bool FireAndWaitForTracerEvent();

 // Signal that the event has been received by the event loop.

 void SignalTracerThread();

 }

 #endif  // WIDGET_PUBLIC_WIDGETTRACEEVENT_H_