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-rw-r--r--dom/ipc/VsyncWorkerChild.h52
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diff --git a/dom/ipc/VsyncWorkerChild.h b/dom/ipc/VsyncWorkerChild.h
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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 mozilla_dom_ipc_VsyncWorkerChild_h
+#define mozilla_dom_ipc_VsyncWorkerChild_h
+
+#include "mozilla/dom/VsyncChild.h"
+#include "mozilla/RefPtr.h"
+#include "nsISupportsImpl.h"
+
+namespace mozilla::dom {
+class DedicatedWorkerGlobalScope;
+class IPCWorkerRef;
+class WorkerPrivate;
+
+// The PVsyncWorkerChild actor receives a vsync event from the main process and
+// delivers it to the child process. This is specific for workers which wish to
+// subscribe to vsync events to drive requestAnimationFrame callbacks.
+class VsyncWorkerChild final : public VsyncChild {
+ NS_INLINE_DECL_REFCOUNTING(VsyncWorkerChild, override)
+
+ friend class PVsyncChild;
+
+ public:
+ VsyncWorkerChild();
+
+ bool Initialize(WorkerPrivate* aWorkerPrivate);
+
+ void Destroy();
+
+ void TryObserve();
+
+ void TryUnobserve();
+
+ private:
+ ~VsyncWorkerChild() override;
+
+ mozilla::ipc::IPCResult RecvNotify(const VsyncEvent& aVsync,
+ const float& aVsyncRate) override;
+
+ void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;
+
+ RefPtr<IPCWorkerRef> mWorkerRef;
+ bool mObserving = false;
+};
+
+} // namespace mozilla::dom
+
+#endif // mozilla_dom_ipc_VsyncWorkerChild_h