73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Analogous to l2cache.h, this class represents information gleaned
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// from the 360's Performance Monitor Counters. In particular we
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// are interested in l2 cache misses and load-hit-stores.
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//
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//=============================================================================//
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#ifndef CPMCDATA_H
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#define CPMCDATA_H
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#ifdef _WIN32
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#pragma once
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#endif
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#ifndef _X360
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#error This file must only be compiled for XBOX360!
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#endif
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// Warning:
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// As written, this class only supports profiling thread 0, processor 0.
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class CPMCData
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{
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public:
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CPMCData();
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~CPMCData() {};
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void Start( void );
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void End( void );
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/// This function should be called exactly once during the lifespan of the program;
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/// it will set up the counters to record the information we are interested in.
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/// This will stomp on whoever else might have set the performance counters elsewhere
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/// in the game.
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static void InitializeOnceProgramWide( void );
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static bool IsInitialized();
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//-------------------------------------------------------------------------
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// GetL2CacheMisses
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//-------------------------------------------------------------------------
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uint64 GetL2CacheMisses( void ) const
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{
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return m_Delta.L2CacheMiss;
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}
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uint64 GetLHS( void ) const
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{
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return m_Delta.LHS;
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}
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/*
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#ifdef DBGFLAG_VALIDATE
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void Validate( CValidator &validator, tchar *pchName ); // Validate our internal structures
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#endif // DBGFLAG_VALIDATE
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*/
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private:
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/// represents saved numbers from the counters we are interested in
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struct PMCounters
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{
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uint64 L2CacheMiss;
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uint64 LHS; ///< load hit store
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PMCounters(int64 _l2cm, int64 _lhs ) : L2CacheMiss(_l2cm), LHS(_lhs) {};
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PMCounters() : L2CacheMiss(0), LHS(0) {};
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};
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PMCounters m_OnStart; ///< values when we began the timer
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PMCounters m_Delta ; ///< computed total delta between start/stop
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};
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#endif // CPMCDATA_H
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