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