1/*********************************************************************** 2 * Software License Agreement (BSD License) 3 * 4 * Copyright 2008-2009 Marius Muja (mariusm@cs.ubc.ca). All rights reserved. 5 * Copyright 2008-2009 David G. Lowe (lowe@cs.ubc.ca). All rights reserved. 6 * 7 * THE BSD LICENSE 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 *************************************************************************/ 30 31#ifndef OPENCV_FLANN_TIMER_H 32#define OPENCV_FLANN_TIMER_H 33 34#include <time.h> 35#include "opencv2/core.hpp" 36#include "opencv2/core/utility.hpp" 37 38namespace cvflann 39{ 40 41/** 42 * A start-stop timer class. 43 * 44 * Can be used to time portions of code. 45 */ 46class StartStopTimer 47{ 48 int64 startTime; 49 50public: 51 /** 52 * Value of the timer. 53 */ 54 double value; 55 56 57 /** 58 * Constructor. 59 */ 60 StartStopTimer() 61 { 62 reset(); 63 } 64 65 /** 66 * Starts the timer. 67 */ 68 void start() 69 { 70 startTime = cv::getTickCount(); 71 } 72 73 /** 74 * Stops the timer and updates timer value. 75 */ 76 void stop() 77 { 78 int64 stopTime = cv::getTickCount(); 79 value += ( (double)stopTime - startTime) / cv::getTickFrequency(); 80 } 81 82 /** 83 * Resets the timer value to 0. 84 */ 85 void reset() 86 { 87 value = 0; 88 } 89 90}; 91 92} 93 94#endif // FLANN_TIMER_H 95