clockTime.C
Go to the documentation of this file.
1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration | Website: https://openfoam.org
5  \\ / A nd | Copyright (C) 2011-2018 OpenFOAM Foundation
6  \\/ M anipulation |
7 -------------------------------------------------------------------------------
8 License
9  This file is part of OpenFOAM.
10 
11  OpenFOAM is free software: you can redistribute it and/or modify it
12  under the terms of the GNU General Public License as published by
13  the Free Software Foundation, either version 3 of the License, or
14  (at your option) any later version.
15 
16  OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19  for more details.
20 
21  You should have received a copy of the GNU General Public License
22  along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
23 
24 \*---------------------------------------------------------------------------*/
25 
26 #include "clockTime.H"
27 #include <sys/time.h>
28 
29 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
30 
31 void Foam::clockTime::getTime(timeType& t)
32 {
33  gettimeofday(&t, 0);
34 }
35 
36 
37 double Foam::clockTime::timeDifference(const timeType& beg, const timeType& end)
38 {
39  return end.tv_sec - beg.tv_sec + 1e-6*(end.tv_usec - beg.tv_usec);
40 }
41 
42 
43 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
44 
46 {
47  getTime(startTime_);
48  lastTime_ = startTime_;
49  newTime_ = startTime_;
50 }
51 
52 
53 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
54 
56 {
57  getTime(newTime_);
58  return timeDifference(startTime_, newTime_);
59 }
60 
61 
63 {
64  lastTime_ = newTime_;
65  getTime(newTime_);
66  return timeDifference(lastTime_, newTime_);
67 }
68 
69 
70 // ************************************************************************* //
double elapsedTime() const
Return time (in seconds) from the start.
Definition: clockTime.C:55
clockTime()
Construct with the current clock time.
Definition: clockTime.C:45
double timeIncrement() const
Return time (in seconds) since last call to timeIncrement()
Definition: clockTime.C:62
const doubleScalar e
Elementary charge.
Definition: doubleScalar.H:105