GeoTessCPP  2.2
Software to facilitate storage and retrieval of 3D information about the Earth.
CpuTimer.h
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35 
36 #ifndef CPU_TIMER_H
37 #define CPU_TIMER_H
38 
39 // **** _SYSTEM INCLUDES_ ******************************************************
40 
41 #include <ctime>
42 
43 // use standard library objects
44 using namespace std;
45 
46 // **** _LOCAL INCLUDES_ *******************************************************
47 
48 #include "CPPUtils.h"
49 
50 // **** _BEGIN GEOTESS NAMESPACE_ **********************************************
51 
52 namespace geotess {
53 
54 // **** _FORWARD REFERENCES_ ***************************************************
55 
56 // **** _CLASS DEFINITION_ *****************************************************
57 
65 {
66  private:
67 
68  // Last real time set when init_timer was called or 'this' CpuTimer was
69  // constructed (msec)
70  double cpuRealTime;
71 
72  // Last cpu time set when init_timer was called or 'this' CpuTimer was
73  // constructed (msec)
74  double cpuCPUTime;
75 
76  public:
77 
78  // Default constructor initialies timer
79  CpuTimer();
80 
81  // Initializes timer
82  void initTimer();
83 
87  static double getCurrCPUTime()
88  { return (double) 1000.0 * clock() / CLOCKS_PER_SEC; }
89 
93  static double getCurrRealTime()
94  { return (double) 1000.0 * time(NULL); }
95 
96  // Returns cpu time (ms) since last init_timer call. The second
97  // function also reinitializes cpuCPUTime.
98  double cpuTime();
99  double cpuTimeInit();
100 
101  // Returns real time (ms) since last init_timer call. The second
102  // function also reinitializes cpuRealTime.
103  double realTime();
104  double realTimeInit();
105 
106  // Static elapsed time string output functions given an input elapsed
107  // time in msec.
108  static string elapsedTimeString(double tm);
109  static string elapsedTimeStringFraction(double tm);
110  static string elapsedTimeStringFractionAbbrvUnits(double tm);
111 
112  // Returns the current time string
113  static string now();
114 };
115 
116 } // end namespace geotess
117 
118 #endif // CPU_TIMER_H
Definition: ArrayReuse.h:55
static double getCurrCPUTime()
Returns the current CPU time in msec since process start.
Definition: CpuTimer.h:87
Wall clock and cpu timing information.
Definition: CpuTimer.h:64
#define GEOTESS_EXP_IMP
Definition: CPPGlobals.h:71
static double getCurrRealTime()
Returns the current real time (wall clock) in msec since 1970.
Definition: CpuTimer.h:93