mbedtls/include/polarssl/timing.h
2015-01-22 14:28:16 +00:00

99 lines
2.3 KiB
C

/**
* \file timing.h
*
* \brief Portable interface to the CPU cycle counter
*
* Copyright (C) 2006-2014, Brainspark B.V.
*
* This file is part of mbed TLS (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef POLARSSL_TIMING_H
#define POLARSSL_TIMING_H
#if !defined(POLARSSL_CONFIG_FILE)
#include "config.h"
#else
#include POLARSSL_CONFIG_FILE
#endif
#if !defined(POLARSSL_TIMING_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief timer structure
*/
struct hr_time
{
unsigned char opaque[32];
};
extern volatile int alarmed;
/**
* \brief Return the CPU cycle counter value
*/
unsigned long hardclock( void );
/**
* \brief Return the elapsed time in milliseconds
*
* \param val points to a timer structure
* \param reset if set to 1, the timer is restarted
*/
unsigned long get_timer( struct hr_time *val, int reset );
/**
* \brief Setup an alarm clock
*
* \param seconds delay before the "alarmed" flag is set
*/
void set_alarm( int seconds );
/**
* \brief Sleep for a certain amount of time
*
* \param milliseconds delay in milliseconds
*/
void m_sleep( int milliseconds );
#if defined(POLARSSL_SELF_TEST)
/**
* \brief Checkup routine
*
* \return 0 if successful, or 1 if a test failed
*/
int timing_self_test( int verbose );
#endif
#ifdef __cplusplus
}
#endif
#else /* POLARSSL_TIMING_ALT */
#include "timing_alt.h"
#endif /* POLARSSL_TIMING_ALT */
#endif /* timing.h */