From 7f4014ca4d593d0330db1904efeaa95208d83da0 Mon Sep 17 00:00:00 2001 From: adamdunkels Date: Wed, 28 Mar 2007 20:09:09 +0000 Subject: [PATCH] Preliminary implementation of the rtimer architecture functions for the native CPU --- cpu/native/rtimer-arch.c | 92 ++++++++++++++++++++++++++++++++++++++++ cpu/native/rtimer-arch.h | 46 ++++++++++++++++++++ 2 files changed, 138 insertions(+) create mode 100644 cpu/native/rtimer-arch.c create mode 100644 cpu/native/rtimer-arch.h diff --git a/cpu/native/rtimer-arch.c b/cpu/native/rtimer-arch.c new file mode 100644 index 000000000..5e55920da --- /dev/null +++ b/cpu/native/rtimer-arch.c @@ -0,0 +1,92 @@ +/* + * 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. + * + * $Id: rtimer-arch.c,v 1.1 2007/03/28 20:09:09 adamdunkels Exp $ + */ + +/** + * \file + * Native (non-specific) code for the Contiki real-time module rt + * \author + * Adam Dunkels + */ + +#include +#include + +#include "sys/rtimer.h" +#include "sys/clock.h" + +#define DEBUG 0 +#if DEBUG +#include +#define PRINTF(...) printf(__VA_ARGS__) +#else +#define PRINTF(...) +#endif + +/*---------------------------------------------------------------------------*/ +static void +interrupt(int sig) +{ + signal(sig, interrupt); + rtimer_run_next(); +} +/*---------------------------------------------------------------------------*/ +void +rtimer_arch_init(void) +{ + signal(SIGALRM, interrupt); +} +/*---------------------------------------------------------------------------*/ +void +rtimer_arch_schedule(rtimer_clock_t t) +{ + struct itimerval val; + rtimer_clock_t c; + + c = t - (unsigned short)clock_time(); + + val.it_value.tv_sec = c / 1000; + val.it_value.tv_usec = (c % 1000) * 1000; + + PRINTF("rtimer_arch_schedule time %u %u in %d.%d seconds\n", t, c, c / 1000, + (c % 1000) * 1000); + + val.it_interval.tv_sec = val.it_interval.tv_usec = 0; + setitimer(ITIMER_REAL, &val, NULL); +} +/*---------------------------------------------------------------------------*/ +rtimer_clock_t +rtimer_arch_now(void) +{ + return clock_time(); +} +/*---------------------------------------------------------------------------*/ diff --git a/cpu/native/rtimer-arch.h b/cpu/native/rtimer-arch.h new file mode 100644 index 000000000..e27837714 --- /dev/null +++ b/cpu/native/rtimer-arch.h @@ -0,0 +1,46 @@ +/* + * 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. + * + * $Id: rtimer-arch.h,v 1.1 2007/03/28 20:09:09 adamdunkels Exp $ + */ + +/** + * \file + * A brief description of what this file is. + * \author + * Adam Dunkels + */ + +#ifndef __RTIMER_ARCH_H__ +#define __RTIMER_ARCH_H__ + +#define RTIMER_ARCH_SECOND 1000 + +#endif /* __RTIMER_ARCH_H__ */