Developer Documentation

- Main Page
- Related Pages
- Modules
- Namespaces
- Classes
- Files

- File List
- File Members

All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Properties Friends Macros Modules Pages
StopWatch.hh
1 /*===========================================================================*\
2 * *
3 * OpenFlipper *
4 * Copyright (c) 2001-2015, RWTH-Aachen University *
5 * Department of Computer Graphics and Multimedia *
6 * All rights reserved. *
7 * www.openflipper.org *
8 * *
9 *---------------------------------------------------------------------------*
10 * This file is part of OpenFlipper. *
11 *---------------------------------------------------------------------------*
12 * *
13 * Redistribution and use in source and binary forms, with or without *
14 * modification, are permitted provided that the following conditions *
15 * are met: *
16 * *
17 * 1. Redistributions of source code must retain the above copyright notice, *
18 * this list of conditions and the following disclaimer. *
19 * *
20 * 2. Redistributions in binary form must reproduce the above copyright *
21 * notice, this list of conditions and the following disclaimer in the *
22 * documentation and/or other materials provided with the distribution. *
23 * *
24 * 3. Neither the name of the copyright holder nor the names of its *
25 * contributors may be used to endorse or promote products derived from *
26 * this software without specific prior written permission. *
27 * *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
31 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
32 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
33 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
34 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
35 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
36 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
37 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
38 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
39 * *
40 \*===========================================================================*/
41
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $Author$ *
46 * $Date$ *
47 * *
48 \*===========================================================================*/
49
50
51
52 //=============================================================================
53 //
54 // CLASS StopWatch
55 //
56 //=============================================================================
57
58
59 #ifndef ACG_STOPWATCH_HH
60 #define ACG_STOPWATCH_HH
61
62
63 //== INCLUDES =================================================================
64
65
66 #ifdef _WIN32
67
68 #include <windows.h>
69
70 #else // Linux
71
72 #include <sys/time.h>
73
74 #endif
75
76 #include "../Config/ACGDefines.hh"
77
78
79 //== NAMESPACES ===============================================================
80
81
82 namespace ACG {
83
84
85 //== CLASS DEFINITION =========================================================
86
87
88
96 class StopWatch
97 {
98 public:
99
101 StopWatch() {
102 #ifdef _WIN32
103 QueryPerformanceFrequency(&freq_);
104 #else
105 starttime_.tv_sec = 0;
106 starttime_.tv_usec = 0;
107 endtime_.tv_sec = 0;
108 endtime_.tv_usec = 0;
109 #endif
110 }
111
113 ~StopWatch() {}
114
116 void start() {
117 #ifdef _WIN32
118 QueryPerformanceCounter(&starttime_);
119 #else
120 starttime_ = current_time();
121 #endif
122 }
123
125 double restart() {
126 #ifdef _WIN32
127 QueryPerformanceCounter(&endtime_);
128 #else
129 endtime_ = current_time();
130 #endif
131
132 double t = elapsed();
133 start();
134 return t;
135 }
136
138 double stop() {
139 #ifdef _WIN32
140 QueryPerformanceCounter(&endtime_);
141 #else
142 endtime_ = current_time();
143 #endif
144
145 return elapsed();
146 }
147
149 double elapsed() const {
150 #ifdef _WIN32
151 return (double)(endtime_.QuadPart - starttime_.QuadPart)
152 / (double)freq_.QuadPart * 1000.0f;
153 #else
154 return ((endtime_.tv_sec - starttime_.tv_sec )*1000.0 +
155 (endtime_.tv_usec - starttime_.tv_usec)*0.001);
156 #endif
157 }
158
159
160 private:
161
162 #ifdef _WIN32
163 LARGE_INTEGER starttime_, endtime_;
164 LARGE_INTEGER freq_;
165 #else // Linux
166 timeval current_time() const {
167 struct timeval tv;
168 gettimeofday(&tv, 0);
169 return tv;
170 }
171
172 timeval starttime_, endtime_;
173 #endif
174
175 };
176
177
178 //=============================================================================
179 } // namespace ACG
180 //=============================================================================
181 #endif // ACG_STOPWATCH_HH defined
182 //=============================================================================
183
ACG::StopWatch
Definition: StopWatch.hh:96
ACG::StopWatch::~StopWatch
~StopWatch()
Destructor.
Definition: StopWatch.hh:113
ACG
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
ACG::StopWatch::restart
double restart()
Restart, return time elapsed until now.
Definition: StopWatch.hh:125
ACG::StopWatch::elapsed
double elapsed() const
Get the total time in milli-seconds (watch has to be stopped).
Definition: StopWatch.hh:149
ACG::StopWatch::StopWatch
StopWatch()
Constructor.
Definition: StopWatch.hh:101
ACG::StopWatch::stop
double stop()
Stop time measurement, return time.
Definition: StopWatch.hh:138
ACG::StopWatch::start
void start()
Start time measurement.
Definition: StopWatch.hh:116