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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 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/CacheOpChild.h"
#include "mozilla/dom/cache/PCacheChild.h"
class nsIAsyncInputStream;
class nsIGlobalObject;
namespace mozilla::dom::cache {
class Cache;
class CacheOpArgs;
class Listener;
class CacheChild final : public PCacheChild, public CacheActorChild {
friend class PCacheChild;
public:
friend class mozilla::detail::BaseAutoLock<CacheChild&>;
using AutoLock = mozilla::detail::BaseAutoLock<CacheChild&>;
explicit CacheChild(ActorChild* aParentActor = nullptr);
void SetListener(CacheChildListener* aListener);
// Must be called by the associated Cache listener in its OnActorDestroy()
// method. Also, Cache must call StartDestroyFromListener() on the actor in
// its destructor to trigger ActorDestroy() if it has not been called yet.
void ClearListener();
template <typename PromiseType>
void ExecuteOp(nsIGlobalObject* aGlobal, PromiseType& aPromise,
nsISupports* aParent, const CacheOpArgs& aArgs) {
MOZ_ALWAYS_TRUE(SendPCacheOpConstructor(
new CacheOpChild(GetWorkerRefPtr().clonePtr(), aGlobal, aParent,
aPromise, this),
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();
ActorChild* mParentActor;
// 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.
CacheChildListener* MOZ_NON_OWNING_REF mListener;
bool mLocked;
bool mDelayedDestroy;
};
} // namespace mozilla::dom::cache
#endif // mozilla_dom_cache_CacheChild_h
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