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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "PerformanceMark.h"
#include "MainThreadUtils.h"
#include "mozilla/dom/PerformanceMarkBinding.h"
#include "mozilla/dom/MessagePortBinding.h"
#include "mozilla/ErrorResult.h"
using mozilla::dom::StructuredSerializeOptions;
using namespace mozilla::dom;
PerformanceMark::PerformanceMark(nsISupports* aParent,
const nsAString& aName,
DOMHighResTimeStamp aStartTime,
const JS::Handle<JS::Value>& aDetail)
: PerformanceEntry(aParent, aName, NS_LITERAL_STRING("mark"))
, mStartTime(aStartTime)
, mDetail(aDetail)
{
// mParent is null in workers.
MOZ_ASSERT(mParent || !NS_IsMainThread());
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<MSG_PMO_CONSTRUCTOR_INACCESSIBLE>();
return nullptr;
}
if (performance->IsGlobalObjectWindow() &&
performance->IsPerformanceTimingAttribute(aMarkName)) {
aRv.Throw(NS_ERROR_DOM_UT_INVALID_TIMING_ATTR);
return nullptr;
}
DOMHighResTimeStamp startTime = aMarkOptions.mStartTime.WasPassed() ?
aMarkOptions.mStartTime.Value() :
performance->Now();
if (startTime < 0) {
aRv.ThrowTypeError<MSG_PMO_UNEXPECTED_START_TIME>();
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));
}
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_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PerformanceMark)
NS_INTERFACE_MAP_END_INHERITING(PerformanceEntry)
NS_IMPL_ADDREF_INHERITED(PerformanceMark, PerformanceEntry)
NS_IMPL_RELEASE_INHERITED(PerformanceMark, PerformanceEntry)
JSObject*
PerformanceMark::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return PerformanceMarkBinding::Wrap(aCx, this, aGivenProto);
}
void PerformanceMark::GetDetail(JSContext* aCx,
JS::MutableHandle<JS::Value> aRv)
{
// 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.
aRv.set(mDetail);
}
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