Visual Servoing Platform  version 3.2.1 under development (2019-10-18) under development (2019-10-18)
vpTime.h
1 /****************************************************************************
2  *
3  * ViSP, open source Visual Servoing Platform software.
4  * Copyright (C) 2005 - 2019 by Inria. All rights reserved.
5  *
6  * This software is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  * See the file LICENSE.txt at the root directory of this source
11  * distribution for additional information about the GNU GPL.
12  *
13  * For using ViSP with software that can not be combined with the GNU
14  * GPL, please contact Inria about acquiring a ViSP Professional
15  * Edition License.
16  *
17  * See http://visp.inria.fr for more information.
18  *
19  * This software was developed at:
20  * Inria Rennes - Bretagne Atlantique
21  * Campus Universitaire de Beaulieu
22  * 35042 Rennes Cedex
23  * France
24  *
25  * If you have questions regarding the use of this file, please contact
26  * Inria at visp@inria.fr
27  *
28  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
29  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
30  *
31  * Description:
32  * Time management and measurement.
33  *
34  * Authors:
35  * Eric Marchand
36  * Fabien Spindler
37  *
38  *****************************************************************************/
39 
40 #ifndef vpTime_h
41 #define vpTime_h
42 
47 #include <visp3/core/vpConfig.h>
48 #include <iostream>
49 #include <string>
50 #if VISP_CXX_STANDARD >= VISP_CXX_STANDARD_11
51 #include <chrono>
52 #endif
53 
54 #include <visp3/core/vpException.h>
55 
78 namespace vpTime
79 {
80 VISP_EXPORT std::string getDateTime(const std::string &format = "%Y/%m/%d %H:%M:%S");
81 VISP_EXPORT double getMinTimeForUsleepCall();
82 VISP_EXPORT double measureTimeSecond();
83 VISP_EXPORT double measureTimeMs();
84 VISP_EXPORT double measureTimeMicros();
85 VISP_EXPORT void sleepMs(double t);
86 VISP_EXPORT int wait(double t0, double t);
87 VISP_EXPORT void wait(double t);
88 };
89 
90 class VISP_EXPORT vpChrono
91 {
92 public:
93  vpChrono();
94 
95  double getDurationMicros();
96  double getDurationMs();
97  double getDurationSeconds();
98  void start(bool reset=true);
99  void stop();
100 
101 private:
102  double m_durationMs;
103 #if VISP_CXX_STANDARD >= VISP_CXX_STANDARD_11 && (defined(_MSC_VER) && _MSC_VER >= 1900 /* VS2015 */ || !defined(_MSC_VER))
104  std::chrono::steady_clock::time_point m_lastTimePoint;
105 #else
106  double m_lastTimePoint;
107 #endif
108 };
109 
110 #endif
VISP_EXPORT int wait(double t0, double t)
Definition: vpTime.cpp:173
Time management and measurement.
Definition: vpTime.h:78
VISP_EXPORT double measureTimeSecond()
Definition: vpTime.cpp:158
VISP_EXPORT double measureTimeMs()
Definition: vpTime.cpp:126
VISP_EXPORT std::string getDateTime(const std::string &format="%Y/%m/%d %H:%M:%S")
Definition: vpTime.cpp:358
VISP_EXPORT void sleepMs(double t)
Definition: vpTime.cpp:271
VISP_EXPORT double measureTimeMicros()
Definition: vpTime.cpp:93
VISP_EXPORT double getMinTimeForUsleepCall()
Definition: vpTime.cpp:86