---

Common/vtkTimerLog.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkTimerLog.h,v $
  Language:  C++

  Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkTimerLog_h
#define __vtkTimerLog_h

#include "vtkObject.h"

#ifdef _WIN32
#ifndef _WIN32_WCE
#include <sys/types.h> // Needed for Win32 implementation of timer
#include <sys/timeb.h> // Needed for Win32 implementation of timer
#endif
#else
#include <time.h>      // Needed for unix implementation of timer
#include <sys/time.h>  // Needed for unix implementation of timer
#include <sys/types.h> // Needed for unix implementation of timer
#include <sys/times.h> // Needed for unix implementation of timer
#endif

// var args
#ifndef _WIN32
#include <unistd.h>    // Needed for unix implementation of timer
#endif

// select stuff here is for sleep method
#ifndef NO_FD_SET
#   define SELECT_MASK fd_set
#else
#   ifndef _AIX
        typedef long fd_mask;
#   endif
#   if defined(_IBMR2)
#       define SELECT_MASK void
#   else
#       define SELECT_MASK int
#   endif
#endif


#define VTK_LOG_EVENT_LENGTH 40

//BTX
typedef struct
{
  float WallTime;
  int CpuTicks;
  char Event[VTK_LOG_EVENT_LENGTH];
  unsigned char Indent;
} vtkTimerLogEntry;
//ETX

// The microsoft compiler defines this as a macro, so
// undefine it here
#undef GetCurrentTime

class VTK_COMMON_EXPORT vtkTimerLog : public vtkObject 
{
public:
  static vtkTimerLog *New();

  vtkTypeRevisionMacro(vtkTimerLog,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);


  static void SetLogging(int v) {vtkTimerLog::Logging = v;}
  static int GetLogging() {return vtkTimerLog::Logging;}
  static void LoggingOn() {vtkTimerLog::SetLogging(1);}
  static void LoggingOff() {vtkTimerLog::SetLogging(0);}


  static void SetMaxEntries(int a);
  static int  GetMaxEntries();

//BTX
  static void FormatAndMarkEvent(const char *EventString, ...);
//ETX
  
  static void DumpLog(const char *filename);


  static void MarkStartEvent(const char *EventString);
  static void MarkEndEvent(const char *EventString);
//BTX
  static void DumpLogWithIndents(ostream *os, float threshold);
//ETX


  static int GetNumberOfEvents();
  static int GetEventIndent(int i);
  static float GetEventWallTime(int i);
  static const char* GetEventString(int i);

  static void MarkEvent(const char *EventString);

  static void ResetLog();

  static void AllocateLog();

  static double GetCurrentTime();

  static double GetCPUTime();

  void StartTimer();

  void StopTimer();

  double GetElapsedTime();

protected:
  vtkTimerLog() {this->StartTime=0; this->EndTime = 0;}; //insure constructor/destructor protected
  ~vtkTimerLog() {};

  static vtkTimerLogEntry* GetEvent(int i);

  static int               Logging;
  static int               Indent;
  static int               MaxEntries;
  static int               NextEntry;
  static int               WrapFlag;
  static int               TicksPerSecond;
  static vtkTimerLogEntry *TimerLog;

#ifdef _WIN32
#ifndef _WIN32_WCE
  static timeb             FirstWallTime;
  static timeb             CurrentWallTime;
#else
  static FILETIME FirstWallTime;
  static FILETIME CurrentWallTime;
#endif
#else
  static timeval           FirstWallTime;
  static timeval           CurrentWallTime;
  static tms               FirstCpuTicks;
  static tms               CurrentCpuTicks;
#endif

  // instance variables to support simple timing functionality,
  // separate from timer table logging.
  double StartTime;
  double EndTime;

  //BTX
  static void DumpEntry(ostream& os, int index, float time, float deltatime,
                        int tick, int deltatick, const char *event);
  //ETX

private:
  vtkTimerLog(const vtkTimerLog&);  // Not implemented.
  void operator=(const vtkTimerLog&);  // Not implemented.
};


//
// Set built-in type.  Creates member Set"name"() (e.g., SetVisibility());
//
#define vtkTimerLogMacro(string) \
  { \
      vtkTimerLog::FormatAndMarkEvent("Mark: In %s, line %d, class %s: %s", \
                              __FILE__, __LINE__, this->GetClassName(), string); \
  }

#endif

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