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Software of the Month Club 1995 March
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SOFM_Mar1995.bin
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pc
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utility
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os2
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clock
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debug.cpp
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1995-01-27
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/****************************************************************** DEBUG.CPP
* *
* Debugging Aids *
* *
****************************************************************************/
#define INCL_BASE
#define INCL_WIN
#include <os2.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "debug.h"
#include "mutex.h"
extern HFILE Timer = 0 ;
extern BOOL Trace = FALSE ;
/****************************************************************************
* *
* Display Debug Message *
* *
****************************************************************************/
extern VOID Debug ( HWND hwnd, char *Message, ... )
{
/***************************************************************************
* Local Declarations *
***************************************************************************/
va_list Marker ;
char Text [500] ;
/***************************************************************************
* Format the debug message. *
***************************************************************************/
va_start ( Marker, Message ) ;
vsprintf ( Text, Message, Marker ) ;
va_end ( Marker ) ;
/***************************************************************************
* Display the log message and wait for the user to press ENTER. *
***************************************************************************/
WinMessageBox ( HWND_DESKTOP, hwnd, PSZ(Text), PSZ("Debug"), 0, MB_ENTER ) ;
}
/****************************************************************************
* *
* Log Debug Message *
* *
****************************************************************************/
Mutex LogSemaphore ( PSZ(NULL) ) ;
extern VOID Log ( char *Message, ... )
{
/***************************************************************************
* Serialize this function by requesting its semaphore. *
***************************************************************************/
LogSemaphore.Request ( SEM_INDEFINITE_WAIT ) ;
/***************************************************************************
* Format the message. *
***************************************************************************/
va_list Marker ;
va_start ( Marker, Message ) ;
static char Buffer [1024] ;
vsprintf ( Buffer, Message, Marker ) ;
va_end ( Marker ) ;
/***************************************************************************
* Open the log file. *
***************************************************************************/
FILE *File = fopen ( "CLOCK.LOG", "a" ) ;
/***************************************************************************
* If the file got opened, write the message to the log file and close it. *
***************************************************************************/
if ( File ) {
char Time [9], Date [9] ;
fprintf ( File, "%s %s %s\n", _strtime(Time), _strdate(Date), Buffer ) ;
fclose ( File ) ;
} /* endif */
/***************************************************************************
* Release the function semaphore and return. *
***************************************************************************/
LogSemaphore.Release ( ) ;
}
/****************************************************************************
* *
* Open Timer for Use *
* *
****************************************************************************/
extern BOOL OpenTimer ( VOID )
{
if ( Timer )
DosClose ( Timer ) ;
ULONG Action ;
if ( DosOpen ( (PSZ)"TIMER$", &Timer, &Action, 0, FILE_NORMAL, FILE_OPEN, OPEN_SHARE_DENYNONE, 0 ) )
{
return ( FALSE ) ;
}
return ( TRUE ) ;
}
/****************************************************************************
* *
* Close Timer *
* *
****************************************************************************/
extern VOID CloseTimer ( VOID )
{
DosClose ( Timer ) ;
}
/****************************************************************************
* *
* Read Time from HRTIMER.SYS *
* *
****************************************************************************/
extern BOOL GetTime ( PTIMESTAMP pts )
{
ULONG ByteCount ;
if ( DosRead ( Timer, pts, sizeof(*pts), &ByteCount ) )
return ( FALSE ) ;
return ( TRUE ) ;
}
/****************************************************************************
* *
* Calculate Elapsed Time *
* *
****************************************************************************/
extern ULONG ComputeElapsedTime ( PTIMESTAMP ptsStart, PTIMESTAMP ptsStop, PULONG pulNs )
{
ULONG ulMsecs, ulNsecs;
TIMESTAMP tsStart, tsStop ;
tsStart = *ptsStart ; // De-reference timestamp
// structures for speed
tsStop = *ptsStop ;
ulMsecs = tsStop.ulMs - tsStart.ulMs ; // Elapsed milliseconds
if( tsStart.ulNs > tsStop.ulNs ) // If nanosecond overflow ...
{
ulNsecs = (1000000 + tsStop.ulNs) - tsStart.ulNs; // Adjust nanoseconds
ulMsecs--; // Adjust milliseconds
}
else
ulNsecs = tsStop.ulNs - tsStart.ulNs ; // No overflow..Elapsed nanos
*pulNs = ulNsecs ;
return ( ulMsecs ) ;
}
/****************************************************************************
* *
* Allocate Memory *
* *
****************************************************************************/
//#define ALLOCATE_THROUGH_DOS
extern PVOID AllocateMemory ( ULONG ByteCount )
{
#ifdef ALLOCATE_THROUGH_DOS
{
PVOID Memory ;
DosAllocMem ( &Memory, ByteCount, PAG_READ | PAG_WRITE | PAG_COMMIT ) ;
return ( Memory ) ;
}
#else
{
return ( malloc ( ByteCount ) ) ;
}
#endif
}
/****************************************************************************
* *
* Free Memory *
* *
****************************************************************************/
extern VOID FreeMemory ( PVOID Memory )
{
#ifdef ALLOCATE_THROUGH_DOS
{
DosFreeMem ( Memory ) ;
}
#else
{
free ( Memory ) ;
}
#endif
}