FreeFOAM The Cross-Platform CFD Toolkit
clockTimeImpl.C
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1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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24 \*---------------------------------------------------------------------------*/
25 
26 #include "clockTimeImpl.H"
27 #include <OpenFOAM/scalar.H>
28 #include <sys/time.h>
29 
30 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
31 
32 namespace Foam
33 {
34 
35 // * * * * * * * * * * * * * * * Static Members * * * * * * * * * * * * * * //
36 
37 
38 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
39 
40 void clockTimeImpl::getTime(struct timeval& t)
41 {
42  gettimeofday(&t, NULL);
43 }
44 
45 
46 double clockTimeImpl::timeDifference
47 (
48  const struct timeval& start,
49  const struct timeval& end
50 )
51 {
52  return end.tv_sec - start.tv_sec + 1E-6*(end.tv_usec - start.tv_usec);
53 }
54 
55 
56 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
57 
59 {
60  getTime(startTime_);
61  lastTime_ = startTime_;
62  newTime_ = startTime_;
63 }
64 
65 
66 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
67 
69 {
70  getTime(newTime_);
71  return timeDifference(startTime_, newTime_);
72 }
73 
74 
76 {
77  lastTime_ = newTime_;
78  getTime(newTime_);
79  return timeDifference(lastTime_, newTime_);
80 }
81 
82 
83 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
84 
85 } // End namespace Foam
86 
87 // ************************ vim: set sw=4 sts=4 et: ************************ //