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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
* file, You can obtain one at */
#ifndef mozilla_dom_worklet_WorkletImpl_h
#define mozilla_dom_worklet_WorkletImpl_h
#include "MainThreadUtils.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/Maybe.h"
#include "mozilla/OriginAttributes.h"
#include "mozilla/OriginTrials.h"
#include "mozilla/ipc/PBackgroundSharedTypes.h"
#include "nsRFPService.h"
class nsPIDOMWindowInner;
class nsIPrincipal;
class nsIRunnable;
namespace mozilla {
namespace dom {
class Worklet;
class WorkletGlobalScope;
class WorkletThread;
} // namespace dom
class WorkletLoadInfo {
explicit WorkletLoadInfo(nsPIDOMWindowInner* aWindow);
uint64_t OuterWindowID() const { return mOuterWindowID; }
uint64_t InnerWindowID() const { return mInnerWindowID; }
// Modified only in constructor.
uint64_t mOuterWindowID;
const uint64_t mInnerWindowID;
* WorkletImpl is accessed from both the worklet's parent thread (on which the
* Worklet object lives) and the worklet's execution thread. It is owned by
* Worklet and WorkletGlobalScope. No parent thread cycle collected objects
* are owned indefinitely by WorkletImpl because WorkletImpl is not cycle
* collected.
class WorkletImpl {
using RFPTarget = mozilla::RFPTarget;
// Methods for parent thread only:
virtual JSObject* WrapWorklet(JSContext* aCx, dom::Worklet* aWorklet,
JS::Handle<JSObject*> aGivenProto);
virtual nsresult SendControlMessage(already_AddRefed<nsIRunnable> aRunnable);
void NotifyWorkletFinished();
virtual nsContentPolicyType ContentPolicyType() const = 0;
// Execution thread only.
dom::WorkletGlobalScope* GetGlobalScope();
// Any thread.
const OriginTrials& Trials() const { return mTrials; }
const WorkletLoadInfo& LoadInfo() const { return mWorkletLoadInfo; }
const OriginAttributes& OriginAttributesRef() const {
return mPrincipal->OriginAttributesRef();
nsIPrincipal* Principal() const { return mPrincipal; }
const ipc::PrincipalInfo& PrincipalInfo() const { return mPrincipalInfo; }
const Maybe<nsID>& GetAgentClusterId() const { return mAgentClusterId; }
bool IsSharedMemoryAllowed() const { return mSharedMemoryAllowed; }
bool IsSystemPrincipal() const { return mPrincipal->IsSystemPrincipal(); }
bool ShouldResistFingerprinting(RFPTarget aTarget) const {
return mShouldResistFingerprinting &&
virtual void OnAddModuleStarted() const {
// empty base impl
virtual void OnAddModulePromiseSettled() const {
// empty base impl
WorkletImpl(nsPIDOMWindowInner* aWindow, nsIPrincipal* aPrincipal);
virtual ~WorkletImpl();
virtual already_AddRefed<dom::WorkletGlobalScope> ConstructGlobalScope() = 0;
// Modified only in constructor.
ipc::PrincipalInfo mPrincipalInfo;
nsCOMPtr<nsIPrincipal> mPrincipal;
const WorkletLoadInfo mWorkletLoadInfo;
// Parent thread only.
RefPtr<dom::WorkletThread> mWorkletThread;
bool mTerminated;
// Execution thread only.
RefPtr<dom::WorkletGlobalScope> mGlobalScope;
bool mFinishedOnExecutionThread;
Maybe<nsID> mAgentClusterId;
bool mSharedMemoryAllowed;
bool mShouldResistFingerprinting;
const OriginTrials mTrials;
} // namespace mozilla
#endif // mozilla_dom_worklet_WorkletImpl_h