mirror of
https://github.com/s1lentq/ReGameDLL_CS.git
synced 2024-12-29 08:05:46 +03:00
424 lines
9.1 KiB
C
424 lines
9.1 KiB
C
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//========= Copyright <20> 1996-2001, Valve LLC, All rights reserved. ============
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================
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#ifndef FASTTIMER_H
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#define FASTTIMER_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "osconfig.h"
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#include "tier0/platform.h"
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PLATFORM_INTERFACE __int64 g_ClockSpeed;
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PLATFORM_INTERFACE unsigned long g_dwClockSpeed;
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PLATFORM_INTERFACE double g_ClockSpeedMicrosecondsMultiplier;
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PLATFORM_INTERFACE double g_ClockSpeedMillisecondsMultiplier;
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PLATFORM_INTERFACE double g_ClockSpeedSecondsMultiplier;
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class CCycleCount
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{
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friend class CFastTimer;
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public:
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CCycleCount();
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void Sample(); // Sample the clock. This takes about 34 clocks to execute (or 26,000 calls per millisecond on a P900).
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void Init(); // Set to zero.
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void Init(float initTimeMsec);
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bool IsLessThan(CCycleCount const &other) const; // Compare two counts.
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// Convert to other time representations. These functions are slow, so it's preferable to call them
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// during display rather than inside a timing block.
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unsigned long GetCycles() const;
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unsigned long GetMicroseconds() const;
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double GetMicrosecondsF() const;
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unsigned long GetMilliseconds() const;
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double GetMillisecondsF() const;
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double GetSeconds() const;
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CCycleCount& operator+=(CCycleCount const &other);
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// dest = rSrc1 + rSrc2
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static void Add(CCycleCount const &rSrc1, CCycleCount const &rSrc2, CCycleCount &dest); // Add two samples together.
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// dest = rSrc1 - rSrc2
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static void Sub(CCycleCount const &rSrc1, CCycleCount const &rSrc2, CCycleCount &dest); // Add two samples together.
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__int64 m_Int64;
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};
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class CClockSpeedInit
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{
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public:
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CClockSpeedInit()
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{
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Init();
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}
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static void Init()
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{
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const CPUInformation& pi = GetCPUInformation();
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g_ClockSpeed = pi.m_Speed;
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g_dwClockSpeed = (unsigned long)g_ClockSpeed;
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g_ClockSpeedMicrosecondsMultiplier = 1000000.0 / (double)g_ClockSpeed;
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g_ClockSpeedMillisecondsMultiplier = 1000.0 / (double)g_ClockSpeed;
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g_ClockSpeedSecondsMultiplier = 1.0f / (double)g_ClockSpeed;
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}
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};
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class CFastTimer
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{
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public:
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// These functions are fast to call and should be called from your sampling code.
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void Start();
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void End();
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const CCycleCount & GetDuration() const; // Get the elapsed time between Start and End calls.
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CCycleCount GetDurationInProgress() const; // Call without ending. Not that cheap.
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// Return number of cycles per second on this processor.
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static inline unsigned long GetClockSpeed();
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private:
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CCycleCount m_Duration;
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};
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// This is a helper class that times whatever block of code it's in
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class CTimeScope
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{
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public:
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CTimeScope(CFastTimer *pTimer);
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~CTimeScope();
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private:
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CFastTimer *m_pTimer;
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};
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inline CTimeScope::CTimeScope(CFastTimer *pTotal)
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{
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m_pTimer = pTotal;
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m_pTimer->Start();
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}
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inline CTimeScope::~CTimeScope()
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{
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m_pTimer->End();
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}
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// This is a helper class that times whatever block of code it's in and
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// adds the total (int microseconds) to a global counter.
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class CTimeAdder
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{
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public:
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CTimeAdder(CCycleCount *pTotal);
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~CTimeAdder();
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void End();
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private:
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CCycleCount *m_pTotal;
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CFastTimer m_Timer;
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};
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inline CTimeAdder::CTimeAdder(CCycleCount *pTotal)
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{
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m_pTotal = pTotal;
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m_Timer.Start();
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}
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inline CTimeAdder::~CTimeAdder()
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{
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End();
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}
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inline void CTimeAdder::End()
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{
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if (m_pTotal)
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{
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m_Timer.End();
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*m_pTotal += m_Timer.GetDuration();
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m_pTotal = 0;
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}
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}
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// -------------------------------------------------------------------------- //
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// Simple tool to support timing a block of code, and reporting the results on
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// program exit
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// -------------------------------------------------------------------------- //
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#define PROFILE_SCOPE(name) \
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class C##name##ACC : public CAverageCycleCounter \
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{ \
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public: \
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~C##name##ACC() \
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{ \
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Msg("%-48s: %6.3f avg (%8.1f total, %7.3f peak, %5d iters)\n", \
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#name, \
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GetAverageMilliseconds(), \
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GetTotalMilliseconds(), \
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GetPeakMilliseconds(), \
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GetIters() ); \
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} \
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}; \
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static C##name##ACC name##_ACC; \
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CAverageTimeMarker name##_ATM( &name##_ACC )
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// -------------------------------------------------------------------------- //
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class CAverageCycleCounter
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{
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public:
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CAverageCycleCounter();
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void Init();
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void MarkIter(const CCycleCount &duration);
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unsigned GetIters() const;
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double GetAverageMilliseconds() const;
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double GetTotalMilliseconds() const;
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double GetPeakMilliseconds() const;
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private:
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unsigned m_nIters;
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CCycleCount m_Total;
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CCycleCount m_Peak;
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bool m_fReport;
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const char *m_pszName;
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};
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// -------------------------------------------------------------------------- //
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class CAverageTimeMarker
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{
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public:
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CAverageTimeMarker(CAverageCycleCounter *pCounter);
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~CAverageTimeMarker();
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private:
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CAverageCycleCounter *m_pCounter;
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CFastTimer m_Timer;
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};
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// -------------------------------------------------------------------------- //
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// CCycleCount inlines.
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// -------------------------------------------------------------------------- //
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inline CCycleCount::CCycleCount()
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{
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m_Int64 = 0;
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}
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inline void CCycleCount::Init()
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{
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m_Int64 = 0;
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}
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inline void CCycleCount::Init(float initTimeMsec)
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{
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if (g_ClockSpeedMillisecondsMultiplier > 0)
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m_Int64 = initTimeMsec / g_ClockSpeedMillisecondsMultiplier;
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else
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m_Int64 = 0;
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}
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inline void CCycleCount::Sample()
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{
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unsigned long* pSample = (unsigned long *)&m_Int64;
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__asm
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{
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// force the cpu to synchronize the instruction queue
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// NJS: CPUID can really impact performance in tight loops.
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//cpuid
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//cpuid
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//cpuid
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mov ecx, pSample
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rdtsc
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mov[ecx], eax
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mov[ecx + 4], edx
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}
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}
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inline CCycleCount& CCycleCount::operator+=(CCycleCount const &other)
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{
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m_Int64 += other.m_Int64;
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return *this;
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}
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inline void CCycleCount::Add(CCycleCount const &rSrc1, CCycleCount const &rSrc2, CCycleCount &dest)
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{
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dest.m_Int64 = rSrc1.m_Int64 + rSrc2.m_Int64;
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}
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inline void CCycleCount::Sub(CCycleCount const &rSrc1, CCycleCount const &rSrc2, CCycleCount &dest)
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{
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dest.m_Int64 = rSrc1.m_Int64 - rSrc2.m_Int64;
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}
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inline bool CCycleCount::IsLessThan(CCycleCount const &other) const
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{
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return m_Int64 < other.m_Int64;
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}
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inline unsigned long CCycleCount::GetCycles() const
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{
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return (unsigned long)m_Int64;
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}
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inline unsigned long CCycleCount::GetMicroseconds() const
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{
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return (unsigned long)((m_Int64 * 1000000) / g_ClockSpeed);
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}
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inline double CCycleCount::GetMicrosecondsF() const
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{
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return (double)(m_Int64 * g_ClockSpeedMicrosecondsMultiplier);
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}
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inline unsigned long CCycleCount::GetMilliseconds() const
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{
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return (unsigned long)((m_Int64 * 1000) / g_ClockSpeed);
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}
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inline double CCycleCount::GetMillisecondsF() const
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{
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return (double)(m_Int64 * g_ClockSpeedMillisecondsMultiplier);
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}
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inline double CCycleCount::GetSeconds() const
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{
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return (double)(m_Int64 * g_ClockSpeedSecondsMultiplier);
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}
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// -------------------------------------------------------------------------- //
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// CFastTimer inlines.
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// -------------------------------------------------------------------------- //
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inline void CFastTimer::Start()
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{
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m_Duration.Sample();
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}
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inline void CFastTimer::End()
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{
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CCycleCount cnt;
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cnt.Sample();
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m_Duration.m_Int64 = cnt.m_Int64 - m_Duration.m_Int64;
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}
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inline CCycleCount CFastTimer::GetDurationInProgress() const
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{
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CCycleCount cnt;
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cnt.Sample();
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CCycleCount result;
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result.m_Int64 = cnt.m_Int64 - m_Duration.m_Int64;
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return result;
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}
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inline unsigned long CFastTimer::GetClockSpeed()
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{
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return g_dwClockSpeed;
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}
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inline CCycleCount const& CFastTimer::GetDuration() const
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{
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return m_Duration;
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}
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// -------------------------------------------------------------------------- //
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// CAverageCycleCounter inlines
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inline CAverageCycleCounter::CAverageCycleCounter()
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: m_nIters(0)
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{
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}
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inline void CAverageCycleCounter::Init()
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{
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m_Total.Init();
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m_Peak.Init();
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m_nIters = 0;
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}
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inline void CAverageCycleCounter::MarkIter(const CCycleCount &duration)
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{
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++m_nIters;
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m_Total += duration;
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if (m_Peak.IsLessThan(duration))
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m_Peak = duration;
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}
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inline unsigned CAverageCycleCounter::GetIters() const
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{
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return m_nIters;
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}
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inline double CAverageCycleCounter::GetAverageMilliseconds() const
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{
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if (m_nIters)
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return (m_Total.GetMillisecondsF() / (double)m_nIters);
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else
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return 0;
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}
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inline double CAverageCycleCounter::GetTotalMilliseconds() const
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{
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return m_Total.GetMillisecondsF();
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}
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inline double CAverageCycleCounter::GetPeakMilliseconds() const
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{
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return m_Peak.GetMillisecondsF();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// -------------------------------------------------------------------------- //
|
|||
|
|
|
|||
|
|
inline CAverageTimeMarker::CAverageTimeMarker(CAverageCycleCounter *pCounter)
|
|||
|
|
{
|
|||
|
|
m_pCounter = pCounter;
|
|||
|
|
m_Timer.Start();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
inline CAverageTimeMarker::~CAverageTimeMarker()
|
|||
|
|
{
|
|||
|
|
m_Timer.End();
|
|||
|
|
m_pCounter->MarkIter(m_Timer.GetDuration());
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
#endif // FASTTIMER_H
|