Source code of Windows XP (NT5)
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162 lines
4.1 KiB

#include <stdio.h>
#include <stdarg.h>
#include "tracelog.h"
static DWORD sg_dwTraceID = INVALID_TRACEID;
static char sg_szTraceName[100]; // Used for OutputDebugString
#ifdef DBG
DWORD sg_dwTracingToDebugger = 1; // Enable OutputDebugString for debug version by default
#else
DWORD sg_dwTracingToDebugger = 0;
#endif
DWORD sg_dwDebuggerMask = 0;
inline const char *TraceLevel(DWORD dwDbgLevel)
{
switch(dwDbgLevel)
{
case TL_ERROR: return "ERROR";
case TL_WARN: return "WARN ";
case TL_INFO: return "INFO ";
default: return " ??? ";
}
}
BOOL TRACELogRegister(LPCTSTR szName)
{
HKEY hTracingKey;
char szTracingKey[100];
const char szDebuggerTracingEnableValue[] = "EnableDebuggerTracing";
const char szTracingMaskValue[] = "FileTracingMask";
sg_dwTracingToDebugger = 0;
sg_dwTraceID = TraceRegister(szName);
TraceDeregister(sg_dwTraceID);
#ifdef UNICODE
wsprintfA(szTracingKey, "Software\\Microsoft\\Tracing\\%ls", szName);
#else
wsprintfA(szTracingKey, "Software\\Microsoft\\Tracing\\%s", szName);
#endif
if ( ERROR_SUCCESS == RegOpenKeyExA(HKEY_LOCAL_MACHINE,
szTracingKey,
0,
KEY_READ|KEY_SET_VALUE,
&hTracingKey) )
{
DWORD dwDataSize = sizeof (DWORD);
DWORD dwDataType;
#ifdef DBG
//
// Always Enable file tracing for debug version
//
DWORD dwEnableFileTracing = 1;
RegSetValueExA(hTracingKey,
"EnableFileTracing",
0,
REG_DWORD,
(LPBYTE) &dwEnableFileTracing,
sizeof (DWORD));
#endif
dwDataSize = sizeof (DWORD);
RegQueryValueExA(hTracingKey,
szDebuggerTracingEnableValue,
0,
&dwDataType,
(LPBYTE) &sg_dwTracingToDebugger,
&dwDataSize);
dwDataSize = sizeof (DWORD);
RegQueryValueExA(hTracingKey,
szTracingMaskValue,
0,
&dwDataType,
(LPBYTE) &sg_dwDebuggerMask,
&dwDataSize);
RegCloseKey (hTracingKey);
}
#ifdef UNICODE
wsprintfA(sg_szTraceName, "%ls", szName);
#else
wsprintfA(sg_szTraceName, "%s", szName);
#endif
sg_dwTraceID = TraceRegister(szName);
return (sg_dwTraceID != INVALID_TRACEID);
}
void TRACELogDeRegister()
{
sg_dwTracingToDebugger = 0;
if (sg_dwTraceID != INVALID_TRACEID)
{
TraceDeregister(sg_dwTraceID);
sg_dwTraceID = INVALID_TRACEID;
}
}
void TRACELogPrint(IN DWORD dwDbgLevel, IN LPCSTR lpszFormat, IN ...)
{
#define MAXDEBUGSTRINGLENGTH 1024
char szTraceBuf[MAXDEBUGSTRINGLENGTH + 1];
va_list arglist;
if ( ( sg_dwTracingToDebugger > 0 ) &&
( dwDbgLevel & sg_dwDebuggerMask ) )
{
// retrieve local time
SYSTEMTIME SystemTime;
GetLocalTime(&SystemTime);
wsprintfA(szTraceBuf,
"%s:[%02u:%02u:%02u.%03u:] [%s] ",
sg_szTraceName,
SystemTime.wHour,
SystemTime.wMinute,
SystemTime.wSecond,
SystemTime.wMilliseconds,
TraceLevel(dwDbgLevel));
va_list ap;
va_start(ap, lpszFormat);
_vsnprintf(&szTraceBuf[lstrlenA(szTraceBuf)],
MAXDEBUGSTRINGLENGTH - lstrlenA(szTraceBuf),
lpszFormat,
ap
);
lstrcatA (szTraceBuf, "\n");
OutputDebugStringA (szTraceBuf);
va_end(ap);
}
if (sg_dwTraceID != INVALID_TRACEID && ( dwDbgLevel & sg_dwDebuggerMask ))
{
wsprintfA(szTraceBuf, "[%s] %s", TraceLevel(dwDbgLevel), lpszFormat);
va_start(arglist, lpszFormat);
TraceVprintfExA(sg_dwTraceID, dwDbgLevel | TRACE_USE_MSEC, szTraceBuf, arglist);
va_end(arglist);
}
}