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| 5496 | leency | 1 | /** |
| 2 | * \file timing.h |
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| 3 | * |
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| 4 | * \brief Portable interface to the CPU cycle counter |
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| 5 | * |
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| 6 | * Copyright (C) 2006-2010, Brainspark B.V. |
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| 7 | * |
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| 8 | * This file is part of PolarSSL (http://www.polarssl.org) |
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| 9 | * Lead Maintainer: Paul Bakker |
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| 10 | * |
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| 11 | * All rights reserved. |
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| 12 | * |
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| 13 | * This program is free software; you can redistribute it and/or modify |
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| 14 | * it under the terms of the GNU General Public License as published by |
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| 15 | * the Free Software Foundation; either version 2 of the License, or |
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| 16 | * (at your option) any later version. |
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| 17 | * |
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| 18 | * This program is distributed in the hope that it will be useful, |
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| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 21 | * GNU General Public License for more details. |
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| 22 | * |
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| 23 | * You should have received a copy of the GNU General Public License along |
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| 24 | * with this program; if not, write to the Free Software Foundation, Inc., |
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| 25 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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| 26 | */ |
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| 27 | #ifndef POLARSSL_TIMING_H |
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| 28 | #define POLARSSL_TIMING_H |
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| 29 | |||
| 30 | /** |
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| 31 | * \brief timer structure |
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| 32 | */ |
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| 33 | struct hr_time |
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| 34 | { |
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| 35 | unsigned char opaque[32]; |
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| 36 | }; |
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| 37 | |||
| 38 | #ifdef __cplusplus |
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| 39 | extern "C" { |
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| 40 | #endif |
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| 41 | |||
| 42 | extern volatile int alarmed; |
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| 43 | |||
| 44 | /** |
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| 45 | * \brief Return the CPU cycle counter value |
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| 46 | */ |
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| 47 | unsigned long hardclock( void ); |
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| 48 | |||
| 49 | /** |
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| 50 | * \brief Return the elapsed time in milliseconds |
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| 51 | * |
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| 52 | * \param val points to a timer structure |
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| 53 | * \param reset if set to 1, the timer is restarted |
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| 54 | */ |
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| 55 | unsigned long get_timer( struct hr_time *val, int reset ); |
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| 56 | |||
| 57 | /** |
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| 58 | * \brief Setup an alarm clock |
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| 59 | * |
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| 60 | * \param seconds delay before the "alarmed" flag is set |
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| 61 | */ |
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| 62 | void set_alarm( int seconds ); |
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| 63 | |||
| 64 | /** |
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| 65 | * \brief Sleep for a certain amount of time |
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| 66 | * |
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| 67 | * \param milliseconds delay in milliseconds |
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| 68 | */ |
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| 69 | void m_sleep( int milliseconds ); |
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| 70 | |||
| 71 | #ifdef __cplusplus |
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| 72 | } |
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| 73 | #endif |
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| 74 | |||
| 75 | #endif /* timing.h */ |