152 lines
4.5 KiB
C
152 lines
4.5 KiB
C
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/*==========================================================================
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*
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* Copyright (C) 2001 Microsoft Corporation. All Rights Reserved.
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*
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* File: PerfMacs.h
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* Content: Performance Instrumentation macros.
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*
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*
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* History:
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* Date By Reason
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* ==== == ======
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* 03/21/01 RichGr Created
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*
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* Usage:
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* As Whistler/XP and DX 8.1 are now locked down for beta 2, this should
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* not be included as part of the official builds. So just include this file
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* temporarily when you need to instrument some functions.
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* Specify these macros before and after what you want to time:
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START_QPC
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DoSomeWork
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END_QPC
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* Then temporarily change dndbg.cpp by replacing
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this:
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#include "dndbg.h"
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#include "memlog.h"
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#if defined(DEBUG)
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with this:
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#if defined(DPINST) && !defined(DEBUG)
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#define DEBUG
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#include "dndbg.h"
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#include "memlog.h"
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#undef DEBUG
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#else
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#include "dndbg.h"
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#include "memlog.h"
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#endif
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#if defined(DEBUG) || defined(DPINST)
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* To build the instrumented binaries, set C_DEFINES=-DDPINST in your razzle build
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* environment. Both free and checked builds can be instrumented. If you want to
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* put the bins in a different directory, set BUILD_ALT_DIR=i where 'i' is the character
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* you want to append to \obj.
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*
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* To get useful results, you will usually need to use the shared memory
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* log option (log=2 in win.ini) and run free binaries. If you run the checked
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* binaries, you should keep the amount of debug output low.
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*
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*
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***************************************************************************/
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#ifndef __PERFMACS_H__
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#define __PERFMACS_H__
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#ifdef DEBUG
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#define DPINST
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#endif
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#ifdef DPINST
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#pragma message("DPINST is defined and binaries are instrumented")
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#define DPINST_CRITSEC FALSE // Specify TRUE or FALSE
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#ifdef __cplusplus
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extern "C" {
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#endif
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//**********************************************************************
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// Constant definitions
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//**********************************************************************
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// #undef and #define this again before the code you're timing
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// if you want to change the logging threshold.
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#define QPC_THRESHOLD 10 // 10 usecs
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//**********************************************************************
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// Macro definitions
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//**********************************************************************
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// To provide local scope for n64QPCStart and n64QPCEnd, QPC_START has
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// an unbalanced open { and QPC_END has the balancing close }.
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#define START_QPC \
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{ \
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__int64 n64QPCStart, n64QPCEnd, n64QPCDiff; \
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if (g_bQPC_Not_Inited) \
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{ \
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QueryPerformanceFrequency((LARGE_INTEGER*)&g_n64QPCFrequency); \
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g_bQPC_Not_Inited = FALSE; \
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} \
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QueryPerformanceCounter((LARGE_INTEGER*)&n64QPCStart);
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// a) We can handle wraps.
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// b) Below a certain threshold, we don't want to log the elapsed time.
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// c) We don't compensate for thread switches.
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#define END_QPC \
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QueryPerformanceCounter((LARGE_INTEGER*)&n64QPCEnd); \
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if (n64QPCEnd >= n64QPCStart) \
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n64QPCDiff = n64QPCEnd - n64QPCStart; \
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else \
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n64QPCDiff = (0x7fffffffffffffff - n64QPCStart) + 1 + n64QPCEnd; \
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n64QPCDiff = n64QPCDiff * 1000000 / g_n64QPCFrequency; \
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if (n64QPCDiff < 0) \
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n64QPCDiff = 0; \
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if (n64QPCDiff >= QPC_THRESHOLD) \
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DebugPrintfX(__FILE__, __LINE__, DPF_MODNAME, DPF_SUBCOMP, DPF_ERRORLEVEL, "%d usecs", (DWORD)n64QPCDiff); \
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}
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//**********************************************************************
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// Redefinitions of existing macros
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//**********************************************************************
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#if DPINST_CRITSEC == TRUE
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#undef DNEnterCriticalSection
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#define DNEnterCriticalSection( arg ) DNTimeEnterCriticalSection( arg )
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#endif
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//**********************************************************************
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// Global Variable definitions
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//**********************************************************************
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static __int64 g_n64QPCFrequency = 0;
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static BOOL g_bQPC_Not_Inited = TRUE;
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//**********************************************************************
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// Function Prototypes
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//**********************************************************************
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void DebugPrintfX(LPCSTR szFile, DWORD dwLineNumber,LPCSTR szFnName, DWORD dwSubComp, volatile DWORD_PTR dwDetail, ...);
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#ifdef __cplusplus
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} //extern "C"
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#endif
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#else // NULL definition
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#define START_QPC
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#define END_QPC
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#endif //#ifdef DPINST
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#endif // __PERFMACS_H__
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