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BoundStorageKeyChild.h (2522B)

      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 http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef mozilla_dom_cache_BoundStorageKeyChild_h
      8 #define mozilla_dom_cache_BoundStorageKeyChild_h
      9 
     10 #include "mozilla/dom/cache/ActorChild.h"
     11 #include "mozilla/dom/cache/ActorUtils.h"
     12 #include "mozilla/dom/cache/PBoundStorageKeyChild.h"
     13 #include "mozilla/dom/cache/TypeUtils.h"
     14 #include "mozilla/dom/cache/Types.h"
     15 #include "mozilla/ipc/ProtocolUtils.h"
     16 
     17 class nsIGlobalObject;
     18 
     19 namespace mozilla::dom::cache {
     20 class CacheWorkerRef;
     21 
     22 class PCacheChild;
     23 class PCacheStreamControlChild;
     24 class CacheOpArgs;
     25 class PCacheChild;
     26 class PCacheOpChild;
     27 
     28 using ActorDestroyReason = ::mozilla::ipc::IProtocol::ActorDestroyReason;
     29 class BoundStorageKeyChild final : public PBoundStorageKeyChild,
     30                                   public ActorChild {
     31  friend class PBoundStorageKeyChild;
     32 
     33 public:
     34  explicit BoundStorageKeyChild(BoundStorageKeyChildListener* aListener);
     35 
     36  void ClearListener();
     37 
     38  // Our parent Listener object has gone out of scope and is being destroyed.
     39  void StartDestroyFromListener();
     40 
     41  NS_INLINE_DECL_REFCOUNTING(BoundStorageKeyChild, override)
     42  void NoteDeletedActor() override;
     43 
     44  already_AddRefed<PCacheChild> AllocPCacheChild() {
     45    return dom::cache::AllocPCacheChild(this);
     46  }
     47 
     48  already_AddRefed<PCacheStreamControlChild> AllocPCacheStreamControlChild() {
     49    return dom::cache::AllocPCacheStreamControlChild(this);
     50  }
     51 
     52 private:
     53  ~BoundStorageKeyChild();
     54  void DestroyInternal();
     55 
     56  // ActorChild methods
     57  // CacheWorkerRef is trying to destroy due to worker shutdown.
     58  virtual void StartDestroy() override;
     59 
     60  // PBoundStorageKeyChild methods
     61  virtual void ActorDestroy(ActorDestroyReason aReason) override;
     62 
     63  // utility methods
     64  inline uint32_t NumChildActors() {
     65    return ManagedPCacheStorageChild().Count() + ManagedPCacheChild().Count() +
     66           ManagedPCacheStreamControlChild().Count();
     67  }
     68 
     69  // Use a weak ref so actor does not hold DOM object alive past content use.
     70  // The BoundStorageKey object must call ClearListener() to null this before
     71  // its destroyed.
     72  BoundStorageKeyChildListener* MOZ_NON_OWNING_REF mListener;
     73  bool mDelayedDestroy;
     74 };
     75 
     76 }  // namespace mozilla::dom::cache
     77 
     78 #endif  // mozilla_dom_cache_BoundStorageKeyChild_h