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/* -*- 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 "PerformanceMark.h"
#include "MainThreadUtils.h"
#include "nsContentUtils.h"
#include "Performance.h"
#include "mozilla/dom/MessagePortBinding.h"
#include "mozilla/dom/PerformanceBinding.h"
#include "mozilla/dom/PerformanceMarkBinding.h"
using namespace mozilla::dom;
PerformanceMark::PerformanceMark(nsISupports* aParent, const nsAString& aName,
DOMHighResTimeStamp aStartTime,
const JS::Handle<JS::Value>& aDetail,
DOMHighResTimeStamp aUnclampedStartTime)
: PerformanceEntry(aParent, aName, u"mark"_ns),
mStartTime(aStartTime),
mDetail(aDetail),
mUnclampedStartTime(aUnclampedStartTime) {
mozilla::HoldJSObjects(this);
}
already_AddRefed<PerformanceMark> PerformanceMark::Constructor(
const GlobalObject& aGlobal, const nsAString& aMarkName,
const PerformanceMarkOptions& aMarkOptions, ErrorResult& aRv) {
const nsCOMPtr<nsIGlobalObject> global =
do_QueryInterface(aGlobal.GetAsSupports());
return PerformanceMark::Constructor(aGlobal.Context(), global, aMarkName,
aMarkOptions, aRv);
}
already_AddRefed<PerformanceMark> PerformanceMark::Constructor(
JSContext* aCx, nsIGlobalObject* aGlobal, const nsAString& aMarkName,
const PerformanceMarkOptions& aMarkOptions, ErrorResult& aRv) {
RefPtr<Performance> performance = Performance::Get(aCx, aGlobal);
if (!performance) {
// This is similar to the message that occurs when accessing `performance`
// from outside a valid global.
aRv.ThrowTypeError(
"can't access PerformanceMark constructor, performance is null");
return nullptr;
}
if (performance->IsGlobalObjectWindow() &&
performance->IsPerformanceTimingAttribute(aMarkName)) {
aRv.ThrowSyntaxError("markName cannot be a performance timing attribute");
return nullptr;
}
DOMHighResTimeStamp startTime = aMarkOptions.mStartTime.WasPassed()
? aMarkOptions.mStartTime.Value()
: performance->Now();
// We need to get the unclamped start time to be able to add profiler markers
// with precise time/duration. This is not exposed to web and only used by the
// profiler.
// If a mStartTime is passed by the user, we will always have a clamped value.
DOMHighResTimeStamp unclampedStartTime = aMarkOptions.mStartTime.WasPassed()
? startTime
: performance->NowUnclamped();
if (startTime < 0) {
aRv.ThrowTypeError("Expected startTime >= 0");
return nullptr;
}
JS::Rooted<JS::Value> detail(aCx);
if (aMarkOptions.mDetail.isNullOrUndefined()) {
detail.setNull();
} else {
StructuredSerializeOptions serializeOptions;
JS::Rooted<JS::Value> valueToClone(aCx, aMarkOptions.mDetail);
nsContentUtils::StructuredClone(aCx, aGlobal, valueToClone,
serializeOptions, &detail, aRv);
if (aRv.Failed()) {
return nullptr;
}
}
return do_AddRef(new PerformanceMark(aGlobal, aMarkName, startTime, detail,
unclampedStartTime));
}
PerformanceMark::~PerformanceMark() { mozilla::DropJSObjects(this); }
NS_IMPL_CYCLE_COLLECTION_CLASS(PerformanceMark)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(PerformanceMark,
PerformanceEntry)
tmp->mDetail.setUndefined();
mozilla::DropJSObjects(tmp);
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(PerformanceMark,
PerformanceEntry)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(PerformanceMark,
PerformanceEntry)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDetail)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(PerformanceMark,
PerformanceEntry)
JSObject* PerformanceMark::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return PerformanceMark_Binding::Wrap(aCx, this, aGivenProto);
}
void PerformanceMark::GetDetail(JSContext* aCx,
JS::MutableHandle<JS::Value> aRetval) {
// Return a copy so that this method always returns the value it is set to
// (i.e. it'll return the same value even if the caller assigns to it). Note
// that if detail is an object, its contents can be mutated and this is
// expected.
aRetval.set(mDetail);
}
size_t PerformanceMark::SizeOfIncludingThis(
mozilla::MallocSizeOf aMallocSizeOf) const {
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
}