1 files changed, 73 insertions, 0 deletions
diff --git a/public/tier0/pmc360.h b/public/tier0/pmc360.h
new file mode 100644
index 0000000..ebae346
--- /dev/null
+++ b/public/tier0/pmc360.h
@@ -0,0 +1,73 @@
+//========= 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
+\ No newline at end of file