cpuTime.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) 2011-2022 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 "cpuTime.H"
27 
28 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
29 
30 inline double Foam::cpuTime::timeDifference
31 (
32  const clock_t prev,
33  const clock_t cur
34 ) const
35 {
36  return double(cur - prev)/CLOCKS_PER_SEC;
37 }
38 
39 
40 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
41 
43 :
44  startTime_(clock()),
45  prevTime_(startTime_),
46  curTime_(startTime_)
47 
48 {}
49 
50 
51 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
52 
54 {
55  curTime_ = clock();
56  return timeDifference(startTime_, curTime_);
57 }
58 
59 
61 {
62  prevTime_ = curTime_;
63  curTime_ = clock();
64  return timeDifference(prevTime_, curTime_);
65 }
66 
67 
68 // ************************************************************************* //
Read access to the system clock with formatting.
Definition: clock.H:50
cpuTime()
Construct with the current clock time.
Definition: cpuTime.C:42
double cpuTimeIncrement() const
Return CPU time (in seconds) since last call to cpuTimeIncrement()
Definition: cpuTime.C:60
double elapsedCpuTime() const
Return CPU time (in seconds) from the start.
Definition: cpuTime.C:53