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Project: engagement_recognition License: BSD Dependencies:
Used by:
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engagement_recognition/src/recognition/lib/engagement_macros.cppGo to the documentation of this file.00001 /* 00002 * Software License Agreement (BSD License) 00003 * 00004 * Copyright (c) 2010, Worcester Polytechnic Institute 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * * Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * * Redistributions in binary form must reproduce the above 00014 * copyright notice, this list of conditions and the following 00015 * disclaimer in the documentation and/or other materials provided 00016 * with the distribution. 00017 * * Neither the name of Worcester Polytechnic Institute. nor the names 00018 * of its contributors may be used to endorse or promote products 00019 * derived from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 */ 00034 // @author Brett Ponsler (bponsler (at) wpi (dot) edu) 00035 #include "engagement_macros.h" 00036 00037 #include <stdio.h> 00038 #include <sys/time.h> 00039 00040 unsigned long current_milliseconds() 00041 { 00042 struct timeval now; 00043 00044 // Grab the time of day 00045 gettimeofday(&now, NULL); 00046 00047 return ((now.tv_sec * 1000) + (now.tv_usec / 1000.0)) + 0.5; 00048 } 00049 00050 bool duration_passed(unsigned long start, unsigned long duration) 00051 { 00052 // Grab the current time, and compute the difference 00053 unsigned long now = current_milliseconds(); 00054 unsigned long diff = now - start; 00055 00056 return (diff >= duration); 00057 } |