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Bug 961769 - Implement event loop responsiveness instrumentation for Gonk. r=gal
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@ -4447,6 +4447,7 @@ cairo-gonk)
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MOZ_WEBGL=1
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MOZ_WEBGL=1
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MOZ_PDF_PRINTING=1
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MOZ_PDF_PRINTING=1
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MOZ_TOUCH=1
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MOZ_TOUCH=1
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MOZ_INSTRUMENT_EVENT_LOOP=1
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;;
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;;
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esac
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esac
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96
widget/gonk/WidgetTraceEvent.cpp
Normal file
96
widget/gonk/WidgetTraceEvent.cpp
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@ -0,0 +1,96 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/WidgetTraceEvent.h"
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#include "mozilla/StaticPtr.h"
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#include "nsThreadUtils.h"
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#include <mozilla/CondVar.h>
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#include <mozilla/Mutex.h>
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using mozilla::CondVar;
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using mozilla::Mutex;
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using mozilla::MutexAutoLock;
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namespace mozilla {
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class TracerRunnable : public nsRunnable {
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public:
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TracerRunnable() {
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mTracerLock = new Mutex("TracerRunnable");
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mTracerCondVar = new CondVar(*mTracerLock, "TracerRunnable");
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mMainThread = do_GetMainThread();
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}
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~TracerRunnable() {
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delete mTracerCondVar;
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delete mTracerLock;
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mTracerLock = nullptr;
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mTracerCondVar = nullptr;
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}
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virtual nsresult Run() {
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MutexAutoLock lock(*mTracerLock);
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mHasRun = true;
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mTracerCondVar->Notify();
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return NS_OK;
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}
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bool Fire() {
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if (!mTracerLock || !mTracerCondVar) {
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return false;
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}
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MutexAutoLock lock(*mTracerLock);
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mHasRun = false;
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mMainThread->Dispatch(this, NS_DISPATCH_NORMAL);
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while (!mHasRun) {
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mTracerCondVar->Wait();
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}
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return true;
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}
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void Signal() {
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MutexAutoLock lock(*mTracerLock);
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mHasRun = true;
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mTracerCondVar->Notify();
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}
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private:
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Mutex* mTracerLock;
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CondVar* mTracerCondVar;
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bool mHasRun;
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nsCOMPtr<nsIThread> mMainThread;
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};
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StaticRefPtr<TracerRunnable> sTracerRunnable;
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bool InitWidgetTracing()
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{
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if (!sTracerRunnable) {
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sTracerRunnable = new TracerRunnable();
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}
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return true;
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}
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void CleanUpWidgetTracing()
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{
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sTracerRunnable = nullptr;
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}
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bool FireAndWaitForTracerEvent()
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{
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if (sTracerRunnable) {
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return sTracerRunnable->Fire();
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}
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return false;
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}
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void SignalTracerThread()
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{
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if (sTracerRunnable) {
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return sTracerRunnable->Signal();
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}
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}
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} // namespace mozilla
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@ -57,7 +57,8 @@ SOURCES += [
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'nsWindow.cpp',
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'nsWindow.cpp',
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'OrientationObserver.cpp',
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'OrientationObserver.cpp',
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'ParentProcessController.cpp',
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'ParentProcessController.cpp',
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'ProcessOrientation.cpp'
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'ProcessOrientation.cpp',
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'WidgetTraceEvent.cpp'
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]
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]
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LIBRARY_NAME = 'widget_gonk'
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LIBRARY_NAME = 'widget_gonk'
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