mirror of
https://github.com/roytam1/UXP.git
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Moonchild
126 lines
4.4 KiB
C++
126 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "PerformanceMark.h"
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#include "MainThreadUtils.h"
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#include "mozilla/dom/PerformanceMarkBinding.h"
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#include "mozilla/dom/MessagePortBinding.h"
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#include "mozilla/ErrorResult.h"
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using mozilla::dom::StructuredSerializeOptions;
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using namespace mozilla::dom;
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PerformanceMark::PerformanceMark(nsISupports* aParent,
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const nsAString& aName,
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DOMHighResTimeStamp aStartTime,
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const JS::Handle<JS::Value>& aDetail)
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: PerformanceEntry(aParent, aName, NS_LITERAL_STRING("mark"))
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, mStartTime(aStartTime)
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, mDetail(aDetail)
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{
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// mParent is null in workers.
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MOZ_ASSERT(mParent || !NS_IsMainThread());
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mozilla::HoldJSObjects(this);
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}
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already_AddRefed<PerformanceMark> PerformanceMark::Constructor(
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const GlobalObject& aGlobal,
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const nsAString& aMarkName,
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const PerformanceMarkOptions& aMarkOptions,
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ErrorResult& aRv)
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{
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const nsCOMPtr<nsIGlobalObject> global =
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do_QueryInterface(aGlobal.GetAsSupports());
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return PerformanceMark::Constructor(aGlobal.Context(), global, aMarkName,
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aMarkOptions, aRv);
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}
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already_AddRefed<PerformanceMark> PerformanceMark::Constructor(
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JSContext* aCx,
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nsIGlobalObject* aGlobal,
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const nsAString& aMarkName,
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const PerformanceMarkOptions& aMarkOptions,
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ErrorResult& aRv)
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{
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RefPtr<Performance> performance = Performance::Get(aCx, aGlobal);
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if (!performance) {
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// This is similar to the message that occurs when accessing `performance`
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// from outside a valid global.
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aRv.ThrowTypeError<MSG_PMO_CONSTRUCTOR_INACCESSIBLE>();
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return nullptr;
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}
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if (performance->IsGlobalObjectWindow() &&
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performance->IsPerformanceTimingAttribute(aMarkName)) {
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aRv.Throw(NS_ERROR_DOM_UT_INVALID_TIMING_ATTR);
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return nullptr;
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}
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DOMHighResTimeStamp startTime = aMarkOptions.mStartTime.WasPassed() ?
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aMarkOptions.mStartTime.Value() :
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performance->Now();
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if (startTime < 0) {
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aRv.ThrowTypeError<MSG_PMO_UNEXPECTED_START_TIME>();
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return nullptr;
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}
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JS::Rooted<JS::Value> detail(aCx);
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if (aMarkOptions.mDetail.isNullOrUndefined()) {
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detail.setNull();
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} else {
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StructuredSerializeOptions serializeOptions;
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JS::Rooted<JS::Value> valueToClone(aCx, aMarkOptions.mDetail);
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nsContentUtils::StructuredClone(aCx, aGlobal, valueToClone,
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serializeOptions, &detail, aRv);
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if (aRv.Failed()) {
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return nullptr;
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}
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}
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return do_AddRef(new PerformanceMark(aGlobal, aMarkName, startTime, detail));
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}
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PerformanceMark::~PerformanceMark()
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{
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mozilla::DropJSObjects(this);
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(PerformanceMark)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(PerformanceMark,
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PerformanceEntry)
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tmp->mDetail.setUndefined();
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mozilla::DropJSObjects(tmp);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(PerformanceMark,
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PerformanceEntry)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(PerformanceMark,
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PerformanceEntry)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDetail)
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PerformanceMark)
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NS_INTERFACE_MAP_END_INHERITING(PerformanceEntry)
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NS_IMPL_ADDREF_INHERITED(PerformanceMark, PerformanceEntry)
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NS_IMPL_RELEASE_INHERITED(PerformanceMark, PerformanceEntry)
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JSObject*
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PerformanceMark::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return PerformanceMarkBinding::Wrap(aCx, this, aGivenProto);
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}
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void PerformanceMark::GetDetail(JSContext* aCx,
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JS::MutableHandle<JS::Value> aRv)
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{
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// Return a copy so that this method always returns the value it is set to
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// (i.e. it'll return the same value even if the caller assigns to it). Note
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// that if detail is an object, its contents can be mutated and this is
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// expected.
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aRv.set(mDetail);
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}
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