Re: DEBUGMSG : output to a file

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

This is a little crude but its easy to add to a number of drivers etc, what
i do is overrider the RETAIL/DEBUG msg macro and plug in my own writing to a
file, the advantage of this is that you can see the log after a reboot or as
part of a shutdown without having a debug cable / serial port.

So:

extern void myLogPrnt( const WCHAR* wszFormat, ... );
#define RETAILMSG(a,b) {myLogPrnt b;}

Then define in the module somewhere:

FILE* gLogFile = NULL;
WCHAR wszBuffer[4096];
void myLogPrnt( const WCHAR* wszFormat, ... )
{
int nCount;
va_list args;

// Write formatted string
va_start( args, wszFormat );
nCount = _vsnwprintf( wszBuffer, 10024, wszFormat, args );
va_end( args );

// Check for buffer exceed length
if( -1 == nCount )
{
nCount = 4096 - 1;
wszBuffer[nCount] = 0;
}

// log to file
gLogFile = _wfopen( L"\\log.txt", L"a" );
fseek(gLogFile, SEEK_END, 0);
fwprintf(gLogFile, L"%d:%s", GetTickCount(), wszBuffer);
fclose(gLogFile);
}

This prints out the tick count as well otherwise you have no idea about the
speed the debug was being produced

--
--
GraemeW
Blog - http://ce4all.blogspot.com

"mosfet" <john.doe@xxxxxxxxxxxxx> wrote in message
news:477b6eb8$0$5362$426a74cc@xxxxxxxxxxxxxxx
Hi,

Is there any standard way to output debug trace (DEBUGMSG) into a file ?
I would like to debug the sms provider .







.

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