Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: Analogous to l2cache.h, this class represents information gleaned
// from the 360's Performance Monitor Counters. In particular we
// are interested in l2 cache misses and load-hit-stores.
//
//=============================================================================//
#ifndef CPMCDATA_H
#define CPMCDATA_H
#ifdef _WIN32
#pragma once
#endif
#ifndef _X360
#error This file must only be compiled for XBOX360!
#endif
// Warning:
// As written, this class only supports profiling thread 0, processor 0.
class CPMCData
{
public:
CPMCData();
~CPMCData() {};
void Start( void );
void End( void );
/// This function should be called exactly once during the lifespan of the program;
/// it will set up the counters to record the information we are interested in.
/// This will stomp on whoever else might have set the performance counters elsewhere
/// in the game.
static void InitializeOnceProgramWide( void );
static bool IsInitialized();
//-------------------------------------------------------------------------
// GetL2CacheMisses
//-------------------------------------------------------------------------
uint64 GetL2CacheMisses( void ) const
{
return m_Delta.L2CacheMiss;
}
uint64 GetLHS( void ) const
{
return m_Delta.LHS;
}
/*
#ifdef DBGFLAG_VALIDATE
void Validate( CValidator &validator, tchar *pchName ); // Validate our internal structures
#endif // DBGFLAG_VALIDATE
*/
private:
/// represents saved numbers from the counters we are interested in
struct PMCounters
{
uint64 L2CacheMiss;
uint64 LHS; ///< load hit store
PMCounters(int64 _l2cm, int64 _lhs ) : L2CacheMiss(_l2cm), LHS(_lhs) {};
PMCounters() : L2CacheMiss(0), LHS(0) {};
};
PMCounters m_OnStart; ///< values when we began the timer
PMCounters m_Delta ; ///< computed total delta between start/stop
};
#endif // CPMCDATA_H