зеркало из https://github.com/mozilla/gecko-dev.git
62 строки
1.9 KiB
C++
62 строки
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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_gfx_layers_ImageContainerChild_h
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#define mozilla_gfx_layers_ImageContainerChild_h
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#include "mozilla/Mutex.h"
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#include "mozilla/layers/PImageContainerChild.h"
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namespace mozilla {
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namespace layers {
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class ImageContainer;
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class ImageCompositeNotification;
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/**
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* The child side of PImageContainer. It's best to avoid ImageContainer filling
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* this role since IPDL objects should be associated with a single thread and
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* ImageContainer definitely isn't. This object belongs to (and is always
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* destroyed on) the ImageBridge thread, except when we need to destroy it
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* during shutdown.
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* An ImageContainer owns one of these; we have a weak reference to our
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* ImageContainer.
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*/
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class ImageContainerChild final : public PImageContainerChild
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{
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public:
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explicit ImageContainerChild(ImageContainer* aImageContainer);
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ImageContainerChild)
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void RegisterWithIPDL();
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void UnregisterFromIPDL();
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void SendAsyncDelete();
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void NotifyComposite(const ImageCompositeNotification& aNotification);
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void ForgetImageContainer();
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private:
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~ImageContainerChild()
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{}
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private:
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Mutex mLock;
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ImageContainer* mImageContainer;
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// If mIPCOpen is false, it means the IPDL code tried to deallocate the actor
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// before the ImageContainer released it. When this happens we don't actually
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// delete the actor right away because the ImageContainer has a reference to
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// it. In this case the actor will be deleted when the ImageContainer lets go
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// of it.
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// mIPCOpen must not be accessed off the ImageBridgeChild thread.
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bool mIPCOpen;
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};
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} // namespace layers
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} // namespace mozilla
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#endif // mozilla_gfx_layers_ImageContainerChild_h
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