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diff --git a/ovr_sdk_win_23.0.0/LibOVRKernel/Src/Util/Util_LongPollThread.h b/ovr_sdk_win_23.0.0/LibOVRKernel/Src/Util/Util_LongPollThread.h
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+/************************************************************************************
+
+Filename    :   Util_LongPollThread.h
+Content     :   Allows us to do all long polling tasks from a single thread to minimize deadlock
+risk Created     :   June 30, 2013 Authors     :   Chris Taylor
+
+Copyright   :   Copyright (c) Facebook Technologies, LLC and its affiliates. All rights reserved.
+
+Licensed under the Oculus Master SDK License Version 1.0 (the "License");
+you may not use the Oculus VR Rift SDK except in compliance with the License,
+which is provided at the time of installation or download, or which
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+https://developer.oculus.com/licenses/oculusmastersdk-1.0
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+*************************************************************************************/
+
+#ifndef OVR_Util_LongPollThread_h
+#define OVR_Util_LongPollThread_h
+
+#include <thread>
+#include "Kernel/OVR_Allocator.h"
+#include "Kernel/OVR_Atomic.h"
+#include "Kernel/OVR_Callbacks.h"
+#include "Kernel/OVR_String.h"
+#include "Kernel/OVR_System.h"
+#include "Kernel/OVR_Threads.h"
+#include "Kernel/OVR_Timer.h"
+
+namespace OVR {
+namespace Util {
+
+//-----------------------------------------------------------------------------
+// LongPollThread
+
+// This thread runs long-polling subsystems that wake up every second or so
+// The motivation is to reduce the number of threads that are running to minimize the risk of
+// deadlock
+class LongPollThread : public SystemSingletonBase<LongPollThread> {
+  OVR_DECLARE_SINGLETON(LongPollThread);
+  virtual void OnThreadDestroy() override;
+
+ public:
+  typedef Delegate0<void> PollFunc;
+  static const int WakeupInterval = 1000; // milliseconds
+
+  void AddPollFunc(CallbackListener<PollFunc>* func);
+
+  void Wake();
+
+  // debug method for assertion to maintain initialization order for this singleton
+  static bool IsInitialized();
+
+ protected:
+  CallbackEmitter<PollFunc> PollSubject;
+
+  std::atomic<bool> Terminated;
+  Event WakeEvent;
+  std::unique_ptr<std::thread> LongPollThreadHandle;
+
+  void fireTermination();
+
+  void Run();
+};
+} // namespace Util
+} // namespace OVR
+
+#endif // OVR_Util_LongPollThread_h