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#ifndef __SEXY_PERFTIMER_H__
#define __SEXY_PERFTIMER_H__

#include "Common.h"

namespace Sexy
{

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
class PerfTimer
{
protected:
        LARGE_INTEGER mStart;
        double mDuration;
        bool mRunning;

        void CalcDuration();

public:
        PerfTimer();
        void Start();
        void Stop();

        double GetDuration();

        static __int64 GetCPUSpeed(); // in Hz
        static int GetCPUSpeedMHz();
};

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
class SexyPerf
{
public:
        static void BeginPerf(bool measurePerfOverhead = false);
        static void EndPerf();
        static bool IsPerfOn();

        static void StartTiming(const char *theName);
        static void StopTiming(const char *theName);

        static std::string GetResults();
};

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
class SexyAutoPerf
{
public:
        const char *mName;
        bool mIsStarted;

        SexyAutoPerf(const char *theName) : mName(theName), mIsStarted(true) { SexyPerf::StartTiming(theName); }
        SexyAutoPerf(const char *theName, bool doStart) : mIsStarted(doStart), mName(theName)
        {
                if(doStart)
                        SexyPerf::StartTiming(theName);
        }

        ~SexyAutoPerf() { Stop(); }

        void Start()
        {
                if(!mIsStarted)
                {
                        mIsStarted = true;
                        SexyPerf::StartTiming(mName);
                }
        }

        void Stop()
        {
                if(mIsStarted)
                {
                        SexyPerf::StopTiming(mName);
                        mIsStarted = false;
                }
        }
};

} // namespace Sexy

#endif

#pragma warning(push)
#pragma warning(disable:4005)

///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
//#define SEXY_PERF_ENABLED
#if defined(SEXY_PERF_ENABLED) && !defined(RELEASEFINAL)

#define SEXY_PERF_BEGIN(theName) SexyPerf::StartTiming(theName)
#define SEXY_PERF_END(theName) SexyPerf::StopTiming(theName)
#define SEXY_AUTO_PERF_MULTI(theName,theSuffix) SexyAutoPerf anAutoPerf##theSuffix(theName)
#define SEXY_AUTO_PERF_2(theName,theSuffix) SEXY_AUTO_PERF_MULTI(theName,theSuffix)
#define SEXY_AUTO_PERFL(theName) SEXY_AUTO_PERF_2(theName,__LINE__) // __LINE__ doesn't work correctly if Edit-and-Continue (/ZI) is enabled
#define SEXY_AUTO_PERF(theName) SEXY_AUTO_PERF_2(theName,UNIQUE)

#define SEXY_PERF_BEGIN_COND(theName,theCond) if(theCond) SexyPerf::StartTiming(theName)
#define SEXY_PERF_END_COND(theName,theCond) if(theCond) SexyPerf::StopTiming(theName)
#define SEXY_AUTO_PERF_MULTI_COND(theName,theSuffix,theCond) SexyAutoPerf anAutoPerf##theSuffix(theName,theCond);
#define SEXY_AUTO_PERF_COND_2(theName,theSuffix,theCond) SEXY_AUTO_PERF_MULTI_COND(theName,theSuffix,theCond);
#define SEXY_AUTO_PERF_CONDL(theName) SEXY_AUTO_PERF_COND_2(theName,__LINE__,theCond)
#define SEXY_AUTO_PERF_COND(theName) SEXY_AUTO_PERF_COND_2(theName,UNIQUE,theCond)

#else

#define SEXY_PERF_BEGIN(theName)
#define SEXY_PERF_END(theName)
#define SEXY_AUTO_PERF_MULTI(theName,theSuffix)
#define SEXY_AUTO_PERF(theName)

#define SEXY_PERF_BEGIN_COND(theName,theCond)
#define SEXY_PERF_END_COND(theName,theCond)
#define SEXY_AUTO_PERF_MULTI_COND(theName,theSuffix,theCond)
#define SEXY_AUTO_PERF_COND(theName)

#endif

#pragma warning(pop)