F:/My Projects/LSEngine/Modules/LSStandardLib/Src/Time/LSSTDTime.h

#ifndef __LSSTD_TIME_H__
#define __LSSTD_TIME_H__

#include "../LSSTDStandardLib.h"

#if defined( MACOS_X ) || defined( __APPLE__ )
// Macintosh.
#include <mach/mach.h>
#include <mach/mach_time.h>
#define LSSTD_TIME_MAC

#endif  // #if defined( MACOS_X ) || defined( __APPLE__ )

namespace lsstd {

        class CTime {
        public :
                // == Various constructors.
                LSE_CALL                                                        CTime();

                // == Functions.
                LSE_INLINE LSUINT64 LSE_CALL            GetCurMicros() const;

                LSE_INLINE LSUINT64 LSE_CALL            GetCurVirtMicros() const;
                
                LSE_INLINE LSUINT64 LSE_CALL            GetCurMills() const;
                
                LSE_INLINE LSUINT64 LSE_CALL            GetCurVirtMills() const;

                LSE_INLINE LSUINT32 LSE_CALL            GetCurFrame() const;
                
                LSE_INLINE LSUINT32 LSE_CALL            GetCurVirtFrame() const;

                LSE_INLINE LSUINT64 LSE_CALL            GetMicrosSinceLastFrame() const;
                
                LSE_INLINE LSUINT64 LSE_CALL            GetVirtMicrosSinceLastFrame() const;
                
                LSE_INLINE LSUINT64 LSE_CALL            GetMillsSinceLastFrame() const;
                
                LSE_INLINE LSUINT64 LSE_CALL            GetVirtMillsSinceLastFrame() const;

                LSE_INLINE LSFLOAT LSE_CALL                     GetSecondsSinceLastFrame() const;
                
                LSE_INLINE LSFLOAT LSE_CALL                     GetVirtSecondsSinceLastFrame() const;
                
                LSE_INLINE LSUINT64 LSE_CALL            GetTicksSinceLastFrame() const; 

                LSE_INLINE LSUINT64 LSE_CALL            GetCurTicks() const;

                LSVOID LSE_CALL                                         Reset();

                LSVOID LSE_CALL                                         Update( LSBOOL _bUpdateVirtuals );

                LSVOID LSE_CALL                                         UpdateBy( LSUINT64 _ui64Amnt, LSBOOL _bUpdateVirtuals );

                LSVOID LSE_CALL                                         UpdateByConstantTime( LSUINT64 _ui64Amnt, LSBOOL _bUpdateVirtuals );

                LSUINT32 LSE_CALL                                       GetConstantStepUpdateTimesFromTicks( LSUINT64 _ui64Ticks, LSUINT32 &_ui32UnitsToNextUpdate );

                LSUINT64 LSE_CALL                                       MicrosToTicks( LSUINT64 _ui64Amnt ) const;

                LSUINT64        LSE_CALL                                GetRealTime() const;


        protected :
                // == Members.
                LSUINT64                                                        m_ui64Resolution;

                LSUINT64                                                        m_ui64CurTime;

                LSUINT64                                                        m_ui64LastTime;

                LSUINT64                                                        m_ui64CurVirtTime;
                LSUINT64                                                        m_ui64LastVirtTime;

                LSUINT64                                                        m_ui64LastRealTime;

                LSUINT64                                                        m_ui64CurMicros;

                LSUINT64                                                        m_ui64LastMicros;

                LSUINT64                                                        m_ui64CurVirtMicros;

                LSUINT64                                                        m_ui64LastVirtMicros;

                LSUINT32                                                        m_ui32Frame;
                LSUINT32                                                        m_ui32VirtFrame;

                LSBOOL                                                          m_bHiRes;
                
#ifdef LSSTD_TIME_MAC
                mach_timebase_info_data_t                       m_mtidTimeData;
#endif  // #ifdef LSSTD_TIME_MAC
        };


        // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        // DEFINITIONS
        // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
        // == Functions.
        LSE_INLINE LSUINT64 LSE_CALL CTime::GetCurMicros() const {
                return m_ui64CurMicros;
        }
        
        LSE_INLINE LSUINT64 LSE_CALL CTime::GetCurVirtMicros() const {
                return m_ui64CurVirtMicros;
        }
        
        LSE_INLINE LSUINT64 LSE_CALL CTime::GetCurMills() const {
                return m_ui64CurMicros / 1000ULL;
        }
        
        LSE_INLINE LSUINT64 LSE_CALL CTime::GetCurVirtMills() const {
                return m_ui64CurVirtMicros / 1000ULL;
        }

        LSE_INLINE LSUINT32 LSE_CALL CTime::GetCurFrame() const {
                return m_ui32Frame;
        }
        
        LSE_INLINE LSUINT32 LSE_CALL CTime::GetCurVirtFrame() const {
                return m_ui32VirtFrame;
        }

        LSE_INLINE LSUINT64 LSE_CALL CTime::GetMicrosSinceLastFrame() const {
                return GetCurMicros() - m_ui64LastMicros;
        }
        
        LSE_INLINE LSUINT64 LSE_CALL CTime::GetVirtMicrosSinceLastFrame() const {
                return GetCurVirtMicros() - m_ui64LastVirtMicros;
        }
        
        LSE_INLINE LSUINT64 LSE_CALL CTime::GetMillsSinceLastFrame() const {
                return GetCurMills() - m_ui64LastMicros / 1000ULL;
        }
        
        LSE_INLINE LSUINT64 LSE_CALL CTime::GetVirtMillsSinceLastFrame() const {
                return GetCurVirtMills() - m_ui64CurVirtMicros / 1000ULL;
        }

        LSE_INLINE LSFLOAT LSE_CALL CTime::GetSecondsSinceLastFrame() const {
                return GetMicrosSinceLastFrame() * (1.0f / 1000000.0f);
        }
        
        LSE_INLINE LSFLOAT LSE_CALL CTime::GetVirtSecondsSinceLastFrame() const {
                return GetVirtMicrosSinceLastFrame() * (1.0f / 1000000.0f);
        }
        
        LSE_INLINE LSUINT64 LSE_CALL CTime::GetTicksSinceLastFrame() const {
                return m_ui64CurTime - m_ui64LastTime;
        }

        LSE_INLINE LSUINT64 LSE_CALL CTime::GetCurTicks() const {
                return m_ui64CurTime;
        }

}       // namespace lsstd

#endif  // __LSSTD_TIME_H__