git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5394 818b1a75-f10b-46b9-bf7c-635c3b92a50f

2014-06-13 16:39:57 +00:00
parent f580e903f4
commit c11b682457
71 changed files with 0 additions and 0 deletions
@@ -0,0 +1,96 @@
+/*******************************************************************************
+
+  Eurecom OpenAirInterface
+  Copyright(c) 1999 - 2011 Eurecom
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information
+  Openair Admin: openair_admin@eurecom.fr
+  Openair Tech : openair_tech@eurecom.fr
+  Forums       : http://forums.eurecom.fsr/openairinterface
+  Address      : Eurecom, 2229, route des crêtes, 06560 Valbonne Sophia Antipolis, France
+
+*******************************************************************************/
+
+/*! \file rt_wrapper.h
+* \brief provides a wrapper for the timing function for real-time opeartions depending on weather RTAI is used or not
+* \author F. Kaltenberger
+* \date 2013
+* \version 0.1
+* \company Eurecom
+* \email: florian.kaltenberger@eurecom.fr
+* \note
+* \warning
+*/
+
+#include "rt_wrapper.h"
+
+#ifndef RTAI
+
+struct timespec interval, next, now, res;
+clockid_t clock_id = CLOCK_REALTIME; //other options are CLOCK_MONOTONIC, CLOCK_REALTIME, CLOCK_PROCESS_CPUTIME_ID, CLOCK_THREAD_CPUTIME_ID 
+RTIME rt_get_time_ns (void) {
+  clock_gettime(clock_id, &now);
+  return(now.tv_sec*1e9+now.tv_nsec); 
+}
+
+int rt_sleep_ns (RTIME x) {
+  int ret;
+  clock_gettime(clock_id, &now);
+  interval.tv_sec = x/((RTIME)1000000000); 
+  interval.tv_nsec = x%((RTIME)1000000000); 
+  //rt_printk("sleeping for %d sec and %d ns\n",interval.tv_sec,interval.tv_nsec);
+  next = now;
+  next.tv_sec += interval.tv_sec;
+  next.tv_nsec += interval.tv_nsec;
+
+  if (next.tv_nsec>=1000000000) {
+    next.tv_nsec -= 1000000000;
+    next.tv_sec++;
+  }
+
+  ret = clock_nanosleep(clock_id, TIMER_ABSTIME, &next, NULL);
+
+  /*
+  if (ret==EFAULT)
+    rt_printk("rt_sleep_ns returned EFAULT (%d), reqested %d sec and %d ns\n",ret,next.tv_sec,next.tv_nsec);
+  if (ret==EINVAL)
+    rt_printk("rt_sleep_ns returned EINVAL (%d), reqested %d sec and %d ns\n",ret,next.tv_sec,next.tv_nsec);
+  if (ret==EINTR)
+    rt_printk("rt_sleep_ns returned EINTR (%d), reqested %d sec and %d ns\n",ret,next.tv_sec,next.tv_nsec);
+  */
+
+  return(ret);
+}
+
+void check_clock(void) {
+  if (clock_getres(clock_id, &res)) {
+    printf("clock_getres failed");
+  } else {
+    printf("reported resolution = %llu ns\n", (long long int) ((int) 1e9 * res.tv_sec) + (long long int) res.tv_nsec);
+  }
+}
+
+#else
+
+int rt_sleep_ns(RTIME x) {
+  rt_sleep(nano2count(x));
+  return(0);
+}
+
+#endif