dom/worklet/WorkletImpl.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_worklet_WorkletImpl_h
   8 #define mozilla_dom_worklet_WorkletImpl_h
   9
  10 #include "MainThreadUtils.h"
  11 #include "mozilla/BasePrincipal.h"
  12 #include "mozilla/Maybe.h"
  13 #include "mozilla/OriginAttributes.h"
  14 #include "mozilla/OriginTrials.h"
  15 #include "mozilla/ipc/PBackgroundSharedTypes.h"
  16 #include "nsRFPService.h"
  17
  18 class nsPIDOMWindowInner;
  19 class nsIPrincipal;
  20 class nsIRunnable;
  21
  22 namespace mozilla {
  23
  24 namespace dom {
  25
  26 class Worklet;
  27 class WorkletGlobalScope;
  28 class WorkletThread;
  29
  30 }  // namespace dom
  31
  32 class WorkletLoadInfo {
  33  public:
  34   explicit WorkletLoadInfo(nsPIDOMWindowInner* aWindow);
  35
  36   uint64_t OuterWindowID() const { return mOuterWindowID; }
  37   uint64_t InnerWindowID() const { return mInnerWindowID; }
  38
  39  private:
  40   // Modified only in constructor.
  41   uint64_t mOuterWindowID;
  42   const uint64_t mInnerWindowID;
  43 };
  44
  45 /**
  46  * WorkletImpl is accessed from both the worklet's parent thread (on which the
  47  * Worklet object lives) and the worklet's execution thread.  It is owned by
  48  * Worklet and WorkletGlobalScope.  No parent thread cycle collected objects
  49  * are owned indefinitely by WorkletImpl because WorkletImpl is not cycle
  50  * collected.
  51  */
  52 class WorkletImpl {
  53   using RFPTarget = mozilla::RFPTarget;
  54
  55  public:
  56   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WorkletImpl);
  57
  58   // Methods for parent thread only:
  59
  60   virtual JSObject* WrapWorklet(JSContext* aCx, dom::Worklet* aWorklet,
  61                                 JS::Handle<JSObject*> aGivenProto);
  62
  63   virtual nsresult SendControlMessage(already_AddRefed<nsIRunnable> aRunnable);
  64
  65   void NotifyWorkletFinished();
  66
  67   virtual nsContentPolicyType ContentPolicyType() const = 0;
  68
  69   // Execution thread only.
  70   dom::WorkletGlobalScope* GetGlobalScope();
  71
  72   // Any thread.
  73
  74   const OriginTrials& Trials() const { return mTrials; }
  75   const WorkletLoadInfo& LoadInfo() const { return mWorkletLoadInfo; }
  76   const OriginAttributes& OriginAttributesRef() const {
  77     return mPrincipal->OriginAttributesRef();
  78   }
  79   nsIPrincipal* Principal() const { return mPrincipal; }
  80   const ipc::PrincipalInfo& PrincipalInfo() const { return mPrincipalInfo; }
  81
  82   const Maybe<nsID>& GetAgentClusterId() const { return mAgentClusterId; }
  83
  84   bool IsSharedMemoryAllowed() const { return mSharedMemoryAllowed; }
  85   bool IsSystemPrincipal() const { return mPrincipal->IsSystemPrincipal(); }
  86   bool ShouldResistFingerprinting(RFPTarget aTarget) const {
  87     return mShouldResistFingerprinting &&
  88            nsRFPService::IsRFPEnabledFor(aTarget);
  89   }
  90
  91   virtual void OnAddModuleStarted() const {
  92     MOZ_ASSERT(NS_IsMainThread());
  93     // empty base impl
  94   }
  95
  96   virtual void OnAddModulePromiseSettled() const {
  97     MOZ_ASSERT(NS_IsMainThread());
  98     // empty base impl
  99   }
 100
 101  protected:
 102   WorkletImpl(nsPIDOMWindowInner* aWindow, nsIPrincipal* aPrincipal);
 103   virtual ~WorkletImpl();
 104
 105   virtual already_AddRefed<dom::WorkletGlobalScope> ConstructGlobalScope() = 0;
 106
 107   // Modified only in constructor.
 108   ipc::PrincipalInfo mPrincipalInfo;
 109   nsCOMPtr<nsIPrincipal> mPrincipal;
 110
 111   const WorkletLoadInfo mWorkletLoadInfo;
 112
 113   // Parent thread only.
 114   RefPtr<dom::WorkletThread> mWorkletThread;
 115   bool mTerminated;
 116
 117   // Execution thread only.
 118   RefPtr<dom::WorkletGlobalScope> mGlobalScope;
 119   bool mFinishedOnExecutionThread;
 120
 121   Maybe<nsID> mAgentClusterId;
 122
 123   bool mSharedMemoryAllowed;
 124   bool mShouldResistFingerprinting;
 125
 126   const OriginTrials mTrials;
 127 };
 128
 129 }  // namespace mozilla
 130
 131 #endif  // mozilla_dom_worklet_WorkletImpl_h