91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/***********************************************************************
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* Software License Agreement (BSD License)
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*
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* Copyright 2008-2009 Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
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* Copyright 2008-2009 David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
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*
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* THE BSD LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*************************************************************************/
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#ifndef TIMER_H
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#define TIMER_H
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#include <time.h>
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namespace cvflann
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{
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/**
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* A start-stop timer class.
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*
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* Can be used to time portions of code.
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*/
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class StartStopTimer
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{
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clock_t startTime;
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public:
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/**
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* Value of the timer.
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*/
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double value;
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/**
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* Constructor.
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*/
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StartStopTimer()
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{
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reset();
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}
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/**
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* Starts the timer.
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*/
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void start() {
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startTime = clock();
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}
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/**
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* Stops the timer and updates timer value.
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*/
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void stop() {
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clock_t stopTime = clock();
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value += ( (double)stopTime - startTime) / CLOCKS_PER_SEC;
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}
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/**
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* Resets the timer value to 0.
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*/
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void reset() {
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value = 0;
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}
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};
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}
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#endif // TIMER_H
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