1/** 2 * \file timing.h 3 * 4 * Based on XySSL: Copyright (C) 2006-2008 Christophe Devine 5 * 6 * Copyright (C) 2009 Paul Bakker <polarssl_maintainer at polarssl dot org> 7 * 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * * Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * * Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * * Neither the names of PolarSSL or XySSL nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35#ifndef POLARSSL_TIMING_H 36#define POLARSSL_TIMING_H 37 38/** 39 * \brief timer structure 40 */ 41struct hr_time 42{ 43 unsigned char opaque[32]; 44}; 45 46#ifdef __cplusplus 47extern "C" { 48#endif 49 50extern int alarmed; 51 52/** 53 * \brief Return the CPU cycle counter value 54 */ 55unsigned long hardclock( void ); 56 57/** 58 * \brief Return the elapsed time in milliseconds 59 * 60 * \param val points to a timer structure 61 * \param reset if set to 1, the timer is restarted 62 */ 63unsigned long get_timer( struct hr_time *val, int reset ); 64 65/** 66 * \brief Setup an alarm clock 67 * 68 * \param seconds delay before the "alarmed" flag is set 69 */ 70void set_alarm( int seconds ); 71 72/** 73 * \brief Sleep for a certain amount of time 74 */ 75void m_sleep( int milliseconds ); 76 77#ifdef __cplusplus 78} 79#endif 80 81#endif /* timing.h */ 82