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984f0333ea
For cases where the class has direct calls (that is, we cast `this` to the subclass before making the call) no longer declare Alloc/Dealloc methods on the base class at all. This should ensure that slots for them are not generated in vtables, and also allow the derived class to choose the method signature (e.g. whether it wants to take something by reference or by value). Differential Revision: https://phabricator.services.mozilla.com/D18131 --HG-- extra : moz-landing-system : lando
98 lines
2.5 KiB
C++
98 lines
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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