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-rw-r--r--gfx/vr/ipc/VRProcessParent.h87
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diff --git a/gfx/vr/ipc/VRProcessParent.h b/gfx/vr/ipc/VRProcessParent.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 GFX_VR_PROCESS_PARENT_H
+#define GFX_VR_PROCESS_PARENT_H
+
+#include "mozilla/UniquePtr.h"
+
+#include "mozilla/ipc/GeckoChildProcessHost.h"
+#include "mozilla/ipc/TaskFactory.h"
+
+namespace mozilla {
+namespace ipc {
+class SharedPreferenceSerializer;
+}
+namespace gfx {
+
+class VRChild;
+
+class VRProcessParent final : public mozilla::ipc::GeckoChildProcessHost {
+ public:
+ class Listener {
+ public:
+ virtual void OnProcessLaunchComplete(VRProcessParent* aParent) {}
+
+ // Follow GPU and RDD process manager, adding this to avoid
+ // unexpectedly shutdown or had its connection severed.
+ // This is not called if an error occurs after calling Shutdown().
+ virtual void OnProcessUnexpectedShutdown(VRProcessParent* aParent) {}
+ };
+
+ explicit VRProcessParent(Listener* aListener);
+
+ // Launch the subprocess asynchronously. On failure, false is returned.
+ // Otherwise, true is returned, and the OnProcessLaunchComplete listener
+ // callback will be invoked either when a connection has been established, or
+ // if a connection could not be established due to an asynchronous error.
+ bool Launch();
+ // If the process is being launched, block until it has launched and
+ // connected. If a launch task is pending, it will fire immediately.
+ //
+ // Returns true if the process is successfully connected; false otherwise.
+ bool WaitForLaunch();
+ void Shutdown();
+ void DestroyProcess();
+ bool CanShutdown() override { return true; }
+
+ void OnChannelError() override;
+ void OnChannelConnected(base::ProcessId peer_pid) override;
+ void OnChannelConnectedTask();
+ void OnChannelErrorTask();
+ void OnChannelClosed();
+ bool IsConnected() const;
+
+ base::ProcessId OtherPid();
+ VRChild* GetActor() const { return mVRChild.get(); }
+ // Return a unique id for this process, guaranteed not to be shared with any
+ // past or future instance of VRProcessParent.
+ uint64_t GetProcessToken() const;
+
+ private:
+ ~VRProcessParent();
+
+ DISALLOW_COPY_AND_ASSIGN(VRProcessParent);
+
+ bool InitAfterConnect(bool aSucceeded);
+ void KillHard(const char* aReason);
+
+ RefPtr<VRChild> mVRChild;
+ mozilla::ipc::TaskFactory<VRProcessParent> mTaskFactory;
+ nsCOMPtr<nsIThread> mLaunchThread;
+ Listener* mListener;
+
+ enum class LaunchPhase { Unlaunched, Waiting, Complete };
+ LaunchPhase mLaunchPhase;
+ bool mChannelClosed;
+ bool mShutdownRequested;
+ UniquePtr<mozilla::ipc::SharedPreferenceSerializer> mPrefSerializer;
+};
+
+} // namespace gfx
+} // namespace mozilla
+
+#endif // ifndef GFX_VR_PROCESS_PARENT_H