text: /*
   * Copyright (c) 2007, Swedish Institute of Computer Science.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the Institute nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * This file is part of the Contiki operating system.
   *
   */
  
  #ifndef RTIMER_ARCH_H_
  #define RTIMER_ARCH_H_
  
  #include "contiki.h"
  #include "sys/clock.h"
  #include "lib/simEnvChange.h"
  #include "sys/cooja_mt.h"
  
  #define RTIMER_ARCH_SECOND UINT64_C(1000000)
  
  #define US_TO_RTIMERTICKS(US)   (US)
  #define RTIMERTICKS_TO_US(T)    (T)
  #define RTIMERTICKS_TO_US_64(T) (T)
  
  rtimer_clock_t rtimer_arch_now(void);
  int rtimer_arch_check(void);
  int rtimer_arch_pending(void);
  rtimer_clock_t rtimer_arch_next(void);
  
  /** \brief A platform-specific implementation that calls cooja_mt_yield()
   * periodically. Without this, Cooja will get stuck in the busy-loop
   * without ever updating the current rtimer time. */
  #define RTIMER_BUSYWAIT_UNTIL_ABS(cond, t0, max_time) \
    ({                                                                \
      bool c;                                                         \
      while(!(c = cond) && RTIMER_CLOCK_LT(RTIMER_NOW(), (t0) + (max_time))) { \
        simProcessRunValue = 1;                                       \
        cooja_mt_yield();                                             \
      }                                                               \
      c;                                                              \
    })
  
  #endif /* RTIMER_ARCH_H_ */
  