Contiki-NG
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rtimer-arch.h
1/*
2 * Copyright (c) 2007, Swedish Institute of Computer Science.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the Institute nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * This file is part of the Contiki operating system.
30 *
31 */
32
33#ifndef RTIMER_ARCH_H_
34#define RTIMER_ARCH_H_
35
36#include "contiki.h"
37#include "sys/clock.h"
38#include "lib/simEnvChange.h"
39#include "sys/cooja_mt.h"
40
41#define RTIMER_ARCH_SECOND UINT64_C(1000000)
42
43#define US_TO_RTIMERTICKS(US) (US)
44#define RTIMERTICKS_TO_US(T) (T)
45#define RTIMERTICKS_TO_US_64(T) (T)
46
47rtimer_clock_t rtimer_arch_now(void);
48int rtimer_arch_check(void);
49int rtimer_arch_pending(void);
50rtimer_clock_t rtimer_arch_next(void);
51
52/** \brief A platform-specific implementation that calls cooja_mt_yield()
53 * periodically. Without this, Cooja will get stuck in the busy-loop
54 * without ever updating the current rtimer time. */
55#define RTIMER_BUSYWAIT_UNTIL_ABS(cond, t0, max_time) \
56 ({ \
57 bool c; \
58 while(!(c = cond) && RTIMER_CLOCK_LT(RTIMER_NOW(), (t0) + (max_time))) { \
59 simProcessRunValue = 1; \
60 cooja_mt_yield(); \
61 } \
62 c; \
63 })
64
65#endif /* RTIMER_ARCH_H_ */