mirror of
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158 lines
7.0 KiB
C++
158 lines
7.0 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// ETW (Event Tracing for Windows) profiling helpers.
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// This allows easy insertion of Generic Event markers into ETW/xperf tracing
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// which then aids in analyzing the traces and finding performance problems.
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// The usage patterns are to use ETWBegin and ETWEnd (typically through the
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// convenience class CETWScope) to bracket time-consuming operations. In addition
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// ETWFrameMark marks the beginning of each frame, and ETWMark can be used to
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// mark other notable events. More event types and providers can be added as needed.
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// When recording xperf profiles add Valve-Main+Valve-FrameRate to the list of
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// user-mode providers and be sure to register the providers with this sequence
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// of commands:
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// xcopy /y game\bin\tier0.dll %temp%
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// wevtutil um src\tier0\ValveETWProvider.man
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// wevtutil im src\tier0\ValveETWProvider.man
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//
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//===============================================================================
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#ifndef ETWPROF_H
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#define ETWPROF_H
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#if defined( COMPILER_MSVC )
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#pragma once
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#endif
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#include "tier0/platform.h"
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#ifdef IS_WINDOWS_PC
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// ETW support should be compiled in for all Windows PC platforms. It isn't
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// supported on Windows XP but that is determined at run-time.
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//#define ETW_MARKS_ENABLED
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#endif
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#ifdef ETW_MARKS_ENABLED
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// Insert a single event to mark a point in an ETW trace. The return value is a 64-bit
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// time stamp.
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PLATFORM_INTERFACE int64 ETWMark( const char *pMessage );
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// Optionally do full printf formatting of the mark string. This will be more expensive,
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// but only when tracing is enabled.
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PLATFORM_INTERFACE void ETWMarkPrintf( PRINTF_FORMAT_STRING const char *pMessage, ... ) FMTFUNCTION( 1, 2 );
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// Optionally specify one to four floats. They will show up in separate columns in
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// summary tables to allow sorting and easier transfer to spreadsheets.
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PLATFORM_INTERFACE void ETWMark1F( const char *pMessage, float data1 );
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PLATFORM_INTERFACE void ETWMark2F( const char *pMessage, float data1, float data2 );
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PLATFORM_INTERFACE void ETWMark3F( const char *pMessage, float data1, float data2, float data3 );
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PLATFORM_INTERFACE void ETWMark4F( const char *pMessage, float data1, float data2, float data3, float data4 );
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// Optionally specify one to four ints. They will show up in separate columns in
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// summary tables to allow sorting and easier transfer to spreadsheets.
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PLATFORM_INTERFACE void ETWMark1I( const char *pMessage, int data1 );
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PLATFORM_INTERFACE void ETWMark2I( const char *pMessage, int data1, int data2 );
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PLATFORM_INTERFACE void ETWMark3I( const char *pMessage, int data1, int data2, int data3 );
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PLATFORM_INTERFACE void ETWMark4I( const char *pMessage, int data1, int data2, int data3, int data4 );
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// Optionally specify one to two strings. They will show up in separate columns in
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// summary tables to allow sorting and easier transfer to spreadsheets.
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PLATFORM_INTERFACE void ETWMark1S( const char *pMessage, const char* data1 );
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PLATFORM_INTERFACE void ETWMark2S( const char *pMessage, const char* data1, const char* data2 );
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// Insert a begin event to mark the start of some work. The return value is a 64-bit
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// time stamp which should be passed to the corresponding ETWEnd function.
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PLATFORM_INTERFACE int64 ETWBegin( const char *pMessage );
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// Insert a paired end event to mark the end of some work.
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PLATFORM_INTERFACE int64 ETWEnd( const char *pMessage, int64 nStartTime );
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// Mark the start of the next render frame. bIsServerProcess must be passed
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// in consistently for a particular process.
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PLATFORM_INTERFACE void ETWRenderFrameMark( bool bIsServerProcess );
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// Mark the start of the next simulation frame. bIsServerProcess must be passed
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// in consistently for a particular process.
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PLATFORM_INTERFACE void ETWSimFrameMark( bool bIsServerProcess );
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// Return the frame number recorded in the ETW trace -- useful for synchronizing
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// other profile information to the ETW trace.
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PLATFORM_INTERFACE int ETWGetRenderFrameNumber();
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PLATFORM_INTERFACE void ETWMouseDown( int nWhichButton, int nX, int nY );
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PLATFORM_INTERFACE void ETWMouseUp( int nWhichButton, int nX, int nY );
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PLATFORM_INTERFACE void ETWMouseMove( int nX, int nY );
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PLATFORM_INTERFACE void ETWMouseWheel( int nWheelDelta, int nX, int nY );
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PLATFORM_INTERFACE void ETWKeyDown( int nScanCode, int nVirtualCode, const char *pChar );
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PLATFORM_INTERFACE void ETWSendPacket( const char *pTo, int nWireSize, int nOutSequenceNR, int nOutSequenceNrAck );
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PLATFORM_INTERFACE void ETWThrottled();
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PLATFORM_INTERFACE void ETWReadPacket( const char *pFrom, int nWireSize, int nInSequenceNR, int nOutSequenceNRAck );
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// This class calls the ETW Begin and End functions in order to insert a
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// pair of events to bracket some work.
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class CETWScope
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{
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public:
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CETWScope( const char *pMessage )
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: m_pMessage( pMessage )
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{
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m_nStartTime = ETWBegin( pMessage );
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}
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~CETWScope()
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{
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ETWEnd( m_pMessage, m_nStartTime );
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}
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private:
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// Private and unimplemented to disable copying.
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CETWScope( const CETWScope& rhs );
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CETWScope& operator=( const CETWScope& rhs );
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const char* m_pMessage;
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int64 m_nStartTime;
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};
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#else
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inline int64 ETWMark( const char* ) { return 0; }
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inline void ETWMarkPrintf( const char *, ... ) { return; }
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inline void ETWMark1F( const char *, float ) { }
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inline void ETWMark2F( const char *, float , float ) { }
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inline void ETWMark3F( const char *, float , float , float ) { }
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inline void ETWMark4F( const char *, float , float , float , float ) { }
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inline void ETWMark1I( const char *, int ) { }
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inline void ETWMark2I( const char *, int , int ) { }
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inline void ETWMark3I( const char *, int , int , int ) { }
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inline void ETWMark4I( const char *, int , int , int , int ) { }
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// Optionally specify one to two strings. They will show up in separate columns in
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// summary tables to allow sorting and easier transfer to spreadsheets.
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inline void ETWMark1S( const char *, const char* ) { }
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inline void ETWMark2S( const char *, const char* , const char* ) { }
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inline int64 ETWBegin( const char* ) { return 0; }
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inline int64 ETWEnd( const char*, int64 ) { return 0; }
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inline void ETWRenderFrameMark( bool ) {}
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inline void ETWSimFrameMark( bool ) {}
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inline int ETWGetRenderFrameNumber() { return 0; }
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inline void ETWMouseDown( int nWhichButton, int nX, int nY ) {}
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inline void ETWMouseUp( int nWhichButton, int nX, int nY ) {}
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inline void ETWMouseMove( int nX, int nY ) {}
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inline void ETWMouseWheel( int nWheelDelta, int nX, int nY ) {}
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inline void ETWKeyDown( int nScanCode, int nVirtualCode, const char *pChar ) {}
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inline void ETWSendPacket( const char *pTo, int nWireSize, int nOutSequenceNR, int nOutSequenceNrAck ) {}
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inline void ETWThrottled() {}
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inline void ETWReadPacket( const char *pFrom, int nWireSize, int nInSequenceNR, int nOutSequenceNRAck ) {}
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// This class calls the ETW Begin and End functions in order to insert a
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// pair of events to bracket some work.
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class CETWScope
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{
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public:
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CETWScope( const char* )
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{
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}
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private:
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// Private and unimplemented to disable copying.
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CETWScope( const CETWScope& rhs );
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CETWScope& operator=( const CETWScope& rhs );
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};
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#endif
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#endif // ETWPROF_H
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