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 "PerformanceResourceTiming.h"
#include "mozilla/dom/PerformanceResourceTimingBinding.h"
#include "nsNetUtil.h"
#include "nsArrayUtils.h"
using namespace mozilla::dom;
NS_IMPL_CYCLE_COLLECTION_INHERITED(PerformanceResourceTiming, PerformanceEntry,
mPerformance)
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(PerformanceResourceTiming,
PerformanceEntry)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PerformanceResourceTiming)
NS_INTERFACE_MAP_END_INHERITING(PerformanceEntry)
NS_IMPL_ADDREF_INHERITED(PerformanceResourceTiming, PerformanceEntry)
NS_IMPL_RELEASE_INHERITED(PerformanceResourceTiming, PerformanceEntry)
PerformanceResourceTiming::PerformanceResourceTiming(
UniquePtr<PerformanceTimingData>&& aPerformanceTiming,
Performance* aPerformance, const nsAString& aName)
: PerformanceEntry(aPerformance->GetParentObject(), aName, u"resource"_ns),
mTimingData(std::move(aPerformanceTiming)),
mPerformance(aPerformance) {
MOZ_RELEASE_ASSERT(mTimingData);
MOZ_ASSERT(aPerformance, "Parent performance object should be provided");
if (NS_IsMainThread()) {
// Used to check if an addon content script has access to this timing.
// We don't need it in workers, and ignore mOriginalURI if null.
NS_NewURI(getter_AddRefs(mOriginalURI), aName);
}
}
PerformanceResourceTiming::~PerformanceResourceTiming() = default;
DOMHighResTimeStamp PerformanceResourceTiming::FetchStart() const {
if (mTimingData->TimingAllowed()) {
return mTimingData->FetchStartHighRes(mPerformance);
}
return StartTime();
}
DOMHighResTimeStamp PerformanceResourceTiming::StartTime() const {
// Force the start time to be the earliest of:
// - RedirectStart
// - WorkerStart
// - AsyncOpen
// Ignore zero values. The RedirectStart and WorkerStart values
// can come from earlier redirected channels prior to the AsyncOpen
// time being recorded.
if (mCachedStartTime.isNothing()) {
DOMHighResTimeStamp redirect =
mTimingData->RedirectStartHighRes(mPerformance);
redirect = redirect ? redirect : DBL_MAX;
DOMHighResTimeStamp worker = mTimingData->WorkerStartHighRes(mPerformance);
worker = worker ? worker : DBL_MAX;
DOMHighResTimeStamp asyncOpen = mTimingData->AsyncOpenHighRes(mPerformance);
mCachedStartTime.emplace(std::min(asyncOpen, std::min(redirect, worker)));
}
return mCachedStartTime.value();
}
JSObject* PerformanceResourceTiming::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return PerformanceResourceTiming_Binding::Wrap(aCx, this, aGivenProto);
}
size_t PerformanceResourceTiming::SizeOfIncludingThis(
mozilla::MallocSizeOf aMallocSizeOf) const {
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}
size_t PerformanceResourceTiming::SizeOfExcludingThis(
mozilla::MallocSizeOf aMallocSizeOf) const {
return PerformanceEntry::SizeOfExcludingThis(aMallocSizeOf) +
mInitiatorType.SizeOfExcludingThisIfUnshared(aMallocSizeOf) +
mTimingData->NextHopProtocol().SizeOfExcludingThisIfUnshared(
aMallocSizeOf);
}
void PerformanceResourceTiming::GetServerTiming(
nsTArray<RefPtr<PerformanceServerTiming>>& aRetval,
nsIPrincipal& aSubjectPrincipal) {
aRetval.Clear();
if (!TimingAllowedForCaller(aSubjectPrincipal)) {
return;
}
nsTArray<nsCOMPtr<nsIServerTiming>> serverTimingArray =
mTimingData->GetServerTiming();
uint32_t length = serverTimingArray.Length();
for (uint32_t index = 0; index < length; ++index) {
nsCOMPtr<nsIServerTiming> serverTiming = serverTimingArray.ElementAt(index);
MOZ_ASSERT(serverTiming);
aRetval.AppendElement(
new PerformanceServerTiming(GetParentObject(), serverTiming));
}
}
bool PerformanceResourceTiming::TimingAllowedForCaller(
nsIPrincipal& aCaller) const {
if (mTimingData->TimingAllowed()) {
return true;
}
// Check if the addon has permission to access the cross-origin resource.
return mOriginalURI &&
BasePrincipal::Cast(&aCaller)->AddonAllowsLoad(mOriginalURI);
}
bool PerformanceResourceTiming::ReportRedirectForCaller(
nsIPrincipal& aCaller, bool aEnsureSameOriginAndIgnoreTAO) const {
if (mTimingData->ShouldReportCrossOriginRedirect(
aEnsureSameOriginAndIgnoreTAO)) {
return true;
}
// Only report cross-origin redirect if the addon has <all_urls> permission.
return BasePrincipal::Cast(&aCaller)->AddonHasPermission(
nsGkAtoms::all_urlsPermission);
}