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81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "Performance.h"
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#include "mozilla/dom/PerformanceBinding.h"
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#include "WorkerPrivate.h"
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BEGIN_WORKERS_NAMESPACE
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Performance::Performance(WorkerPrivate* aWorkerPrivate)
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: mWorkerPrivate(aWorkerPrivate)
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{
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mWorkerPrivate->AssertIsOnWorkerThread();
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}
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Performance::~Performance()
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{
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mWorkerPrivate->AssertIsOnWorkerThread();
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}
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JSObject*
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Performance::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return PerformanceBinding_workers::Wrap(aCx, this, aGivenProto);
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}
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DOMHighResTimeStamp
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Performance::Now() const
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{
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TimeDuration duration =
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TimeStamp::Now() - mWorkerPrivate->NowBaseTimeStamp();
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return duration.ToMilliseconds();
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}
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// To be removed once bug 1124165 lands
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bool
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Performance::IsPerformanceTimingAttribute(const nsAString& aName)
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{
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// In workers we just support navigationStart.
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return aName.EqualsASCII("navigationStart");
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}
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DOMHighResTimeStamp
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Performance::GetPerformanceTimingFromString(const nsAString& aProperty)
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{
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if (!IsPerformanceTimingAttribute(aProperty)) {
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return 0;
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}
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if (aProperty.EqualsLiteral("navigationStart")) {
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return mWorkerPrivate->NowBaseTimeHighRes();
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}
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MOZ_CRASH("IsPerformanceTimingAttribute and GetPerformanceTimingFromString are out of sync");
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return 0;
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}
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DOMHighResTimeStamp
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Performance::DeltaFromNavigationStart(DOMHighResTimeStamp aTime)
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{
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if (aTime == 0) {
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return 0;
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}
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return aTime - mWorkerPrivate->NowBaseTimeHighRes();
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}
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void
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Performance::DispatchBufferFullEvent()
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{
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// This method is needed just for InsertResourceEntry, but this method is not
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// exposed to workers.
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MOZ_CRASH("This should not be called.");
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}
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END_WORKERS_NAMESPACE
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