text: /**
   * \file timing.h
   *
   * \brief Portable interface to the CPU cycle counter
   *
   *  Copyright (C) 2006-2010, Brainspark B.V.
   *
   *  This file is part of PolarSSL (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
  
  /**
   * \brief          timer structure
   */
  struct hr_time
  {
      unsigned char opaque[32];
  };
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  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 );
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* timing.h */
  