widget/WidgetTraceEvent.h
author Markus Stange <mstange@themasta.com>
Fri, 18 May 2018 18:59:05 -0400
changeset 420800 2fe10732076c637139ed9c7bdfe7a8bcbd83a762
parent 252586 91d6e262b662a0b4e47358665e222d3927337af9
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1462784 - Annotate idle stacks in the native event loop on Windows. r=froydnj MozReview-Commit-ID: A0c3ZLLkLUC

/* 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();

} // namespace mozilla

#endif  // WIDGET_PUBLIC_WIDGETTRACEEVENT_H_