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Diffstat (limited to '')
-rw-r--r-- | gfx/vr/ipc/VRProcessParent.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/gfx/vr/ipc/VRProcessParent.h b/gfx/vr/ipc/VRProcessParent.h new file mode 100644 index 0000000000..acbd0a26e2 --- /dev/null +++ b/gfx/vr/ipc/VRProcessParent.h @@ -0,0 +1,87 @@ +/* -*- 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 |