windows-nt/Source/XPSP1/NT/base/busdrv/acpi/asl/debug.c

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2020-09-26 03:20:57 -05:00
/*** debug.c - Debug functions
*
* This module contains all the debug functions.
*
* Copyright (c) 1996,1997 Microsoft Corporation
* Author: Michael Tsang (MikeTs)
* Created 09/07/96
*
* MODIFICATION HISTORY
*/
#include "pch.h"
#include <stdarg.h> //for va_*
#ifdef TRACING
#define TRACEFILE_NAME "tracelog.txt"
FILE *gpfileTrace = NULL;
PSZ gpszTraceFile = NULL;
int giTraceLevel = 0;
int giIndent = 0;
/***LP OpenTrace - Initialize tracing
*
* This function opens the device that the trace output will go to.
* It will first try the caller's filename, or else the default filenmae.
*
* ENTRY
* pszTraceOut -> output device name
*
* EXIT
* None
*/
VOID LOCAL OpenTrace(char *pszTraceOut)
{
if ((gpfileTrace == NULL) && (giTraceLevel > 0))
{
if ((pszTraceOut == NULL) ||
((gpfileTrace = fopen(pszTraceOut, "w")) == NULL))
{
gpfileTrace = fopen(TRACEFILE_NAME, "w");
}
}
} //OpenTrace
/***LP CloseTrace - Finish tracing
*
* This function close the device that the trace output will go to.
*
* ENTRY
* None
*
* EXIT
* None
*/
VOID LOCAL CloseTrace(VOID)
{
if (gpfileTrace != NULL)
{
fclose(gpfileTrace);
gpfileTrace = NULL;
}
giTraceLevel = 0;
} //CloseTrace
/***LP EnterProc - Entering a procedure
*
* ENTRY
* n - trace level of this procedure
* pszFormat -> format string
* ... - variable arguments according to format string
*
* EXIT
* None
*/
VOID CDECL EnterProc(int n, char *pszFormat, ...)
{
int i;
va_list marker;
if (n <= giTraceLevel)
{
if (gpfileTrace != NULL)
{
fprintf(gpfileTrace, "%s:", MODNAME);
for (i = 0; i < giIndent; ++i)
fprintf(gpfileTrace, "| ");
va_start(marker, pszFormat);
vfprintf(gpfileTrace, pszFormat, marker);
fflush(gpfileTrace);
va_end(marker);
}
++giIndent;
}
} //EnterProc
/***LP ExitProc - Exiting a procedure
*
* ENTRY
* n - trace level of this procedure
* pszFormat -> format string
* ... - variable arguments according to format string
*
* EXIT
* None
*/
VOID CDECL ExitProc(int n, char *pszFormat, ...)
{
int i;
va_list marker;
if (n <= giTraceLevel)
{
--giIndent;
if (gpfileTrace != NULL)
{
fprintf(gpfileTrace, "%s:", MODNAME);
for (i = 0; i < giIndent; ++i)
fprintf(gpfileTrace, "| ");
va_start(marker, pszFormat);
vfprintf(gpfileTrace, pszFormat, marker);
fflush(gpfileTrace);
va_end(marker);
}
}
} //ExitProc
#endif //ifdef TRACING
/***LP ErrPrintf - Print to stderr
*
* ENTRY
* pszFormat -> format string
* ... - variable arguments according to format string
*
* EXIT
* None
*/
VOID CDECL ErrPrintf(char *pszFormat, ...)
{
va_list marker;
va_start(marker, pszFormat);
vfprintf(stdout, pszFormat, marker);
va_end(marker);
} //ErrPrintf