1 files changed, 84 insertions, 0 deletions
diff --git a/dom/cache/CacheChild.h b/dom/cache/CacheChild.h
new file mode 100644
index 0000000000..7f37c79064
--- /dev/null
+++ b/dom/cache/CacheChild.h
@@ -0,0 +1,84 @@
+/* -*- 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 http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_cache_CacheChild_h
+#define mozilla_dom_cache_CacheChild_h
+
+#include "mozilla/dom/cache/ActorChild.h"
+#include "mozilla/dom/cache/PCacheChild.h"
+
+class nsIAsyncInputStream;
+class nsIGlobalObject;
+
+namespace mozilla::dom {
+
+class Promise;
+
+namespace cache {
+
+class Cache;
+class CacheOpArgs;
+
+class CacheChild final : public PCacheChild, public ActorChild {
+  friend class PCacheChild;
+
+ public:
+  friend class mozilla::detail::BaseAutoLock<CacheChild&>;
+  using AutoLock = mozilla::detail::BaseAutoLock<CacheChild&>;
+
+  CacheChild();
+
+  void SetListener(Cache* aListener);
+
+  // Must be called by the associated Cache listener in its DestroyInternal()
+  // method.  Also, Cache must call StartDestroyFromListener() on the actor in
+  // its destructor to trigger ActorDestroy() if it has not been called yet.
+  void ClearListener();
+
+  void ExecuteOp(nsIGlobalObject* aGlobal, Promise* aPromise,
+                 nsISupports* aParent, const CacheOpArgs& aArgs);
+
+  // Our parent Listener object has gone out of scope and is being destroyed.
+  void StartDestroyFromListener();
+  void NoteDeletedActor() override;
+
+  NS_INLINE_DECL_REFCOUNTING(CacheChild, override);
+
+ private:
+  ~CacheChild();
+
+  void DestroyInternal();
+  // ActorChild methods
+  // WorkerRef is trying to destroy due to worker shutdown.
+  virtual void StartDestroy() override;
+
+  // PCacheChild methods
+  virtual void ActorDestroy(ActorDestroyReason aReason) override;
+
+  already_AddRefed<PCacheOpChild> AllocPCacheOpChild(
+      const CacheOpArgs& aOpArgs);
+
+  // utility methods
+  inline uint32_t NumChildActors() { return ManagedPCacheOpChild().Count(); }
+
+  // Methods used to temporarily force the actor alive.  Only called from
+  // AutoLock.
+  void Lock();
+
+  void Unlock();
+
+  // Use a weak ref so actor does not hold DOM object alive past content use.
+  // The Cache object must call ClearListener() to null this before its
+  // destroyed.
+  Cache* MOZ_NON_OWNING_REF mListener;
+  bool mLocked;
+  bool mDelayedDestroy;
+};
+
+}  // namespace cache
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_cache_CacheChild_h