63 lines
2.0 KiB
C++
63 lines
2.0 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
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//we 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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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
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/// program; it will set up the counters to record the information we are
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/// interested in. This will stomp on whoever else might have set the
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/// performance counters elsewhere 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 { return m_Delta.L2CacheMiss; }
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uint64 GetLHS(void) const { return m_Delta.LHS; }
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/*
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#ifdef DBGFLAG_VALIDATE
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void Validate( CValidator &validator, tchar *pchName ); //
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Validate our internal structures #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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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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