зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
2.5 KiB
C++
98 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_cache_CacheChild_h
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#define mozilla_dom_cache_CacheChild_h
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#include "mozilla/dom/cache/ActorChild.h"
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#include "mozilla/dom/cache/PCacheChild.h"
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class nsIAsyncInputStream;
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class nsIGlobalObject;
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namespace mozilla {
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namespace dom {
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class Promise;
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namespace cache {
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class Cache;
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class CacheOpArgs;
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class CacheChild final : public PCacheChild, public ActorChild {
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friend class PCacheChild;
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public:
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class MOZ_RAII AutoLock final {
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CacheChild* mActor;
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public:
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explicit AutoLock(CacheChild* aActor) : mActor(aActor) {
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MOZ_DIAGNOSTIC_ASSERT(mActor);
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mActor->Lock();
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}
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~AutoLock() { mActor->Unlock(); }
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};
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CacheChild();
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~CacheChild();
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void SetListener(Cache* aListener);
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// Must be called by the associated Cache listener in its DestroyInternal()
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// method. Also, Cache must call StartDestroyFromListener() on the actor in
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// its destructor to trigger ActorDestroy() if it has not been called yet.
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void ClearListener();
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void ExecuteOp(nsIGlobalObject* aGlobal, Promise* aPromise,
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nsISupports* aParent, const CacheOpArgs& aArgs);
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// Our parent Listener object has gone out of scope and is being destroyed.
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void StartDestroyFromListener();
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private:
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// ActorChild methods
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// WorkerHolder is trying to destroy due to worker shutdown.
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virtual void StartDestroy() override;
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// PCacheChild methods
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virtual void ActorDestroy(ActorDestroyReason aReason) override;
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PCacheOpChild* AllocPCacheOpChild(const CacheOpArgs& aOpArgs);
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bool DeallocPCacheOpChild(PCacheOpChild* aActor);
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// utility methods
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void NoteDeletedActor();
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void MaybeFlushDelayedDestroy();
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// Methods used to temporarily force the actor alive. Only called from
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// AutoLock.
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void Lock();
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void Unlock();
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// Use a weak ref so actor does not hold DOM object alive past content use.
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// The Cache object must call ClearListener() to null this before its
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// destroyed.
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Cache* MOZ_NON_OWNING_REF mListener;
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uint32_t mNumChildActors;
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bool mDelayedDestroy;
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bool mLocked;
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NS_DECL_OWNINGTHREAD
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};
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} // namespace cache
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_cache_CacheChild_h
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