src/kits/support/StopWatch.cpp

   1 //------------------------------------------------------------------------------
   2 //      Copyright (c) 2001-2004, OpenBeOS
   3 //
   4 //      Permission is hereby granted, free of charge, to any person obtaining a
   5 //      copy of this software and associated documentation files (the "Software"),
   6 //      to deal in the Software without restriction, including without limitation
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   8 //      and/or sell copies of the Software, and to permit persons to whom the
   9 //      Software is furnished to do so, subject to the following conditions:
  10 //
  11 //      The above copyright notice and this permission notice shall be included in
  12 //      all copies or substantial portions of the Software.
  13 //
  14 //      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 //      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 //      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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  20 //      DEALINGS IN THE SOFTWARE.
  21 //
  22 //      File Name:              StopWatch.cpp
  23 //      Author(s):              unknown
  24 //
  25 //      Description:    Timer Class, mostly useful for debugging
  26 //
  27 //
  28 //
  29 //------------------------------------------------------------------------------
  30
  31 #include <OS.h>         // for system_time()
  32 #include <StopWatch.h>
  33
  34 #include <stdio.h>
  35
  36
  37 BStopWatch::BStopWatch(const char *name, bool silent)
  38         :
  39         fName(name),
  40         fSilent(silent)
  41 {
  42         Reset();
  43 }
  44
  45
  46 BStopWatch::~BStopWatch()
  47 {
  48         if (!fSilent){
  49                 printf("StopWatch \"%s\": %d usecs.\n", fName, (int)ElapsedTime());
  50
  51                 if (fLap) {
  52                         for (int i = 1; i <= fLap; i++){
  53                                 if (!((i-1)%4))
  54                                         printf("\n   ");
  55                                 printf("[%d: %d#%d] ", i, (int)(fLaps[i]-fStart), (int)(fLaps[i] - fLaps[i -1 ]));
  56                         }
  57                         printf("\n");
  58                 }
  59         }
  60 }
  61
  62
  63 void
  64 BStopWatch::Suspend()
  65 {
  66         if (!fSuspendTime)
  67                 fSuspendTime = system_time();
  68 }
  69
  70
  71 void
  72 BStopWatch::Resume()
  73 {
  74         if (fSuspendTime) {
  75                 fStart += system_time() - fSuspendTime;
  76                 fSuspendTime = 0;
  77         }
  78 }
  79
  80
  81 bigtime_t
  82 BStopWatch::Lap()
  83 {
  84         if (!fSuspendTime){
  85                 if (fLap<9)
  86                         fLap++;
  87                 fLaps[fLap] = system_time();
  88
  89                 return system_time() - fStart;
  90         } else
  91                 return 0;
  92 }
  93
  94
  95 bigtime_t
  96 BStopWatch::ElapsedTime() const
  97 {
  98         if (fSuspendTime)
  99                 return fSuspendTime - fStart;
 100         else
 101                 return system_time() - fStart;
 102 }
 103
 104
 105 void
 106 BStopWatch::Reset()
 107 {
 108         fStart = system_time();         // store current time
 109         fSuspendTime = 0;
 110         fLap = 0;                                       // clear laps
 111         for (int i = 0; i < 10; i++)
 112                 fLaps[i] = fStart;
 113 }
 114
 115
 116 const char *
 117 BStopWatch::Name() const
 118 {
 119         return fName != NULL ? fName : "";
 120 }
 121
 122
 123 // just for future binary compatibility
 124 void BStopWatch::_ReservedStopWatch1()  {}
 125 void BStopWatch::_ReservedStopWatch2()  {}
 126