60 lines
1.8 KiB
C++
60 lines
1.8 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 _include_gfx_ipc_CanvasShutdownManager_h__
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#define _include_gfx_ipc_CanvasShutdownManager_h__
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#include "mozilla/RefPtr.h"
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#include "mozilla/StaticMutex.h"
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#include "mozilla/ThreadLocal.h"
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#include "mozilla/layers/LayersTypes.h"
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#include <set>
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namespace mozilla {
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namespace dom {
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class CanvasRenderingContext2D;
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class StrongWorkerRef;
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class ThreadSafeWorkerRef;
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} // namespace dom
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namespace gfx {
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class CanvasShutdownManager final {
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public:
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static CanvasShutdownManager* Get();
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static CanvasShutdownManager* MaybeGet();
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static void Shutdown();
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dom::ThreadSafeWorkerRef* GetWorkerRef() const { return mWorkerRef; }
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void AddShutdownObserver(dom::CanvasRenderingContext2D* aCanvas);
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void RemoveShutdownObserver(dom::CanvasRenderingContext2D* aCanvas);
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static void OnCompositorManagerRestored();
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void OnRemoteCanvasLost();
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void OnRemoteCanvasRestored();
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void OnRemoteCanvasReset(
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const nsTArray<layers::RemoteTextureOwnerId>& aOwnerIds);
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private:
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explicit CanvasShutdownManager(dom::StrongWorkerRef* aWorkerRef);
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CanvasShutdownManager();
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~CanvasShutdownManager();
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void Destroy();
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static void MaybeRestoreRemoteCanvas();
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RefPtr<dom::ThreadSafeWorkerRef> mWorkerRef;
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std::set<dom::CanvasRenderingContext2D*> mActiveCanvas;
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static MOZ_THREAD_LOCAL(CanvasShutdownManager*) sLocalManager;
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static StaticMutex sManagersMutex;
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static std::set<CanvasShutdownManager*> sManagers;
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};
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} // namespace gfx
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} // namespace mozilla
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#endif // _include_gfx_ipc_CanvasShutdownManager_h__
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