Source code
Revision control
Copy as Markdown
Other Tools
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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
#include "PerformancePaintTiming.h"
#include "Performance.h"
#include "MainThreadUtils.h"
#include "mozilla/dom/PerformanceMeasureBinding.h"
#include "nsRFPService.h"
using namespace mozilla::dom;
NS_IMPL_CYCLE_COLLECTION_INHERITED(PerformancePaintTiming, PerformanceEntry,
mPerformance)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PerformancePaintTiming)
NS_INTERFACE_MAP_END_INHERITING(PerformanceEntry)
NS_IMPL_ADDREF_INHERITED(PerformancePaintTiming, PerformanceEntry)
NS_IMPL_RELEASE_INHERITED(PerformancePaintTiming, PerformanceEntry)
PerformancePaintTiming::PerformancePaintTiming(Performance* aPerformance,
const nsAString& aName,
const TimeStamp& aStartTime)
: PerformanceEntry(aPerformance->GetParentObject(), aName, u"paint"_ns),
mPerformance(aPerformance),
mRawStartTime(aStartTime) {}
PerformancePaintTiming::~PerformancePaintTiming() = default;
JSObject* PerformancePaintTiming::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return PerformancePaintTiming_Binding::Wrap(aCx, this, aGivenProto);
}
DOMHighResTimeStamp PerformancePaintTiming::StartTime() const {
if (mCachedStartTime.isNothing()) {
DOMHighResTimeStamp rawValue =
mPerformance->GetDOMTiming()->TimeStampToDOMHighRes(mRawStartTime);
mCachedStartTime.emplace(nsRFPService::ReduceTimePrecisionAsMSecs(
rawValue, mPerformance->GetRandomTimelineSeed(),
mPerformance->GetRTPCallerType()));
}
return mCachedStartTime.value();
}
size_t PerformancePaintTiming::SizeOfIncludingThis(
mozilla::MallocSizeOf aMallocSizeOf) const {
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}