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