Geant4  10.02
G4SliceTimer.hh
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27 // $Id: G4SliceTimer.hh 67970 2013-03-13 10:10:06Z gcosmo $
28 //
29 //
30 // ----------------------------------------------------------------------
31 // Class G4SliceTimer
32 //
33 // Class description:
34 //
35 // Class for timer objects, able to measure elasped user/system process
36 // accumulated time.
37 //
38 // Note: Uses <sys/times.h> & <unistd.h> - POSIX.1 defined
39 // If used, this header must be included in the source (.cc) file
40 // and it must be the first header file to be included!
41 //
42 // Member functions:
43 //
44 // G4SliceTimer()
45 // Construct a timer object
46 // Start()
47 // Start timing
48 // Stop()
49 // Stop timing
50 // Clear()
51 // Clear accumulated times
52 // G4bool IsValid()
53 // Return true if have a valid time (ie start() and stop() called)
54 // G4double GetRealElapsed()
55 // Return the elapsed real time between last calling start() and stop()
56 // G4double GetSystemElapsed()
57 // Return the elapsed system time between last calling start() and stop()
58 // G4double GetUserElapsed()
59 // Return the elapsed user time between last calling start() and stop()
60 //
61 // Operators:
62 //
63 // std::ostream& operator << (std::ostream& os, const G4SliceTimer& t);
64 // Print the elapsed real,system and usertimes on os. Prints **s for times
65 // if !IsValid
66 //
67 // Member data:
68 //
69 // G4bool fValidTimes
70 // True after start and stop have both been called more than once and
71 // an equal number of times
72 // clock_t fStartRealTime,fEndRealTime
73 // Real times (arbitrary time 0)
74 // tms fStartTimes,fEndTimes
75 // Timing structures (see times(2)) for start and end times
76 
77 // History:
78 // 23.10.06 - M.Asai - Derived from G4Timer implementation
79 // ----------------------------------------------------------------------
80 #ifndef G4SLICE_TIMER_HH
81 #define G4SLICE_TIMER_HH
82 
83 #ifndef WIN32
84 # include <unistd.h>
85 # include <sys/times.h>
86 #else
87 # include <time.h>
88 # define _SC_CLK_TCK 1
89 
90  extern "C" {
91  int sysconf(int);
92  };
93 
94  // Structure returned by times()
95 
96  struct tms {
97  clock_t tms_utime; /* user time */
98  clock_t tms_stime; /* system time */
99  clock_t tms_cutime; /* user time, children */
100  clock_t tms_cstime; /* system time, children */
101  };
102 
103  extern "C" {
104  extern clock_t times(struct tms *);
105  };
106 #endif /* WIN32 */
107 
108 #include "G4Types.hh"
109 #include "G4ios.hh"
110 
112 {
113  public:
114 
115  G4SliceTimer();
116 
117  inline void Start();
118  inline void Stop();
119  inline void Clear();
120  inline G4bool IsValid() const;
121  G4double GetRealElapsed() const;
122  G4double GetSystemElapsed() const;
123  G4double GetUserElapsed() const;
124 
125  private:
126 
131 };
132 
133 std::ostream& operator << (std::ostream& os, const G4SliceTimer& t);
134 
135 #include "G4SliceTimer.icc"
136 
137 #define times ostimes
138 
139 #endif
G4double fRealElapsed
clock_t fEndRealTime
G4double fSystemElapsed
G4double GetUserElapsed() const
Definition: G4SliceTimer.cc:79
G4double GetRealElapsed() const
Definition: G4SliceTimer.cc:69
G4double GetSystemElapsed() const
Definition: G4SliceTimer.cc:74
G4bool IsValid() const
bool G4bool
Definition: G4Types.hh:79
std::ostream & operator<<(std::ostream &os, const G4SliceTimer &t)
Definition: G4SliceTimer.cc:48
G4bool fValidTimes
clock_t fStartRealTime
#define times
double G4double
Definition: G4Types.hh:76
G4double fUserElapsed