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diff --git a/public/gcsdk/jobtime.h b/public/gcsdk/jobtime.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Encapsultes the job system's version of time (which is != to wall clock time)
+//
+//=============================================================================
+
+#ifndef JOBTIME_H
+#define JOBTIME_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+namespace GCSDK
+{
+
+// CJobTime
+// This is our primary job time structure.  It's similar to the Windows FILETIME structure, but
+// with 1/10th the nominal resolution.
+// It offers 1 microsecond resolution beginning on January 1, 1601.
+// This is NOT wall clock time, it is time based proxy for a frame counter.
+// This time PAUSES when you are in the debugger. Most timeout checks (things that don't need to be 
+// exact time wise should use this );
+class CJobTime
+{
+public:
+	CJobTime();
+
+	void SetToJobTime();
+	void SetFromJobTime( int64 dMicroSecOffset );
+
+	// Amount of time that's passed between this CJobTime and the current time.
+	int64 CServerMicroSecsPassed() const;
+
+	// Time accessors
+	uint64 LTime() const { return m_lTime; }
+	void SetLTime( uint64 lTime ) { m_lTime = lTime; }
+
+	// Access our cached current time value
+	static void UpdateJobTime( int cMicroSecPerShellFrame );
+	static void SetCurrentJobTime( uint64 lCurrentTime );
+	static uint64 LJobTimeCur() { return sm_lTimeCur; }
+
+	bool operator==( const CJobTime &val ) const { return val.m_lTime == m_lTime; }
+	bool operator!=( const CJobTime &val ) const { return val.m_lTime != m_lTime; }
+	bool operator<( const CJobTime &val ) const { return m_lTime < val.m_lTime; }
+	bool operator>( const CJobTime &val ) const { return m_lTime > val.m_lTime; }
+	const CJobTime& operator+( const int64 &val )  { m_lTime += val; return *this; }
+	const CJobTime& operator+=( const int64 &val )  { m_lTime += val; return *this; }
+
+private:
+
+	uint64 m_lTime;							// Our time value (microseconds since 1/1/1601)
+	static uint64 sm_lTimeCur;				// Cached value of the current time (updated each frame)
+};
+
+const uint64 k_lJobTimeMaxFuture = (uint64)-1;
+
+
+}
+#endif // JOBTIME_H