ApplePlatformTime.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================================
    ApplePlatformTime.h: Apple platform Time functions
==============================================================================================*/
 
#pragma once
#include "GenericPlatform/GenericPlatformTime.h"
#include "CoreTypes.h"
#if PLATFORM_MAC
#include "Mac/MacSystemIncludes.h"
#elif PLATFORM_IOS
#include "IOS/IOSSystemIncludes.h"
#endif
 
struct CORE_API FApplePlatformTime : public FGenericPlatformTime
{
    static double InitTiming();
 
    static inline double Seconds()
    {
        uint64 Cycles = mach_absolute_time();
        // Add big number to make bugs apparent where return value is being passed to float
        return Cycles * GetSecondsPerCycle() + 16777216.0;
    }
 
    static inline uint32 Cycles()
    {
        uint64 Cycles = mach_absolute_time();
        return Cycles;
    }
 
    static inline uint64 Cycles64()
    {
        uint64 Cycles = mach_absolute_time();
        return Cycles;
    }
 
    static FCPUTime GetCPUTime();
};
 
typedef FApplePlatformTime FPlatformTime;