gauthier
c7518ecf42
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7885 818b1a75-f10b-46b9-bf7c-635c3b92a50f
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/*******************************************************************************
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OpenAirInterface
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Copyright(c) 1999 - 2014 Eurecom
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OpenAirInterface is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenAirInterface is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenAirInterface.The full GNU General Public License is
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included in this distribution in the file called "COPYING". If not,
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see <http://www.gnu.org/licenses/>.
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Contact Information
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OpenAirInterface Admin: openair_admin@eurecom.fr
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OpenAirInterface Tech : openair_tech@eurecom.fr
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OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
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Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
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*******************************************************************************/
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/*! \file rt_wrapper.h
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* \brief provides a wrapper for the timing function for real-time opeartions depending on weather RTAI is used or not. It also implements an API for the SCHED_DEADLINE kernel scheduler.
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* \author F. Kaltenberger and Navid Nikaein
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* \date 2013
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* \version 0.1
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* \company Eurecom
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* \email: florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
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* \note
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* \warning This code will be removed when a legacy libc API becomes available.
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*/
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void set_latency_target(void);
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#ifndef RTAI
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#include <time.h>
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#include <errno.h>
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#include <stdint.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <syscall.h>
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#include <math.h>
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#define RTIME long long int
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#define rt_printk printf
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RTIME rt_get_time_ns (void);
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int rt_sleep_ns (RTIME x);
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void check_clock(void);
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int fill_modeled_runtime_table(uint16_t runtime_phy_rx[29][6],uint16_t runtime_phy_tx[29][6]);
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double get_runtime_tx(int tx_subframe, uint16_t runtime_phy_tx[29][6],uint32_t mcs, int N_RB_DL,double cpuf,int nb_tx_antenna);
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double get_runtime_rx(int rx_subframe, uint16_t runtime_phy_rx[29][6], uint32_t mcs, int N_RB_DL,double cpuf,int nb_rx_antenna);
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/**
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* see https://www.kernel.org/doc/Documentation/scheduler/sched-deadline.txt or
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* http://www.blaess.fr/christophe/2014/04/05/utiliser-un-appel-systeme-inconnu-de-la-libc/
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*/
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#ifdef LOWLATENCY
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#define gettid() syscall(__NR_gettid)
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#define SCHED_DEADLINE 6
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/* XXX use the proper syscall numbers */
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#ifdef __x86_64__
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#define __NR_sched_setattr 314
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#define __NR_sched_getattr 315
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#endif
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#ifdef __i386__
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#define __NR_sched_setattr 351
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#define __NR_sched_getattr 352
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#endif
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struct sched_attr {
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__u32 size;
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__u32 sched_policy;
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__u64 sched_flags;
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/* SCHED_NORMAL, SCHED_BATCH */
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__s32 sched_nice;
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/* SCHED_FIFO, SCHED_RR */
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__u32 sched_priority;
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/* SCHED_DEADLINE (nsec) */
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__u64 sched_runtime;
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__u64 sched_deadline;
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__u64 sched_period;
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};
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int sched_setattr(pid_t pid, const struct sched_attr *attr, unsigned int flags);
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int sched_getattr(pid_t pid,struct sched_attr *attr,unsigned int size, unsigned int flags);
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#endif
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#define gettid() syscall(__NR_gettid) // for gettid
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#else
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#include <rtai_hal.h>
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#include <rtai_lxrt.h>
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#include <rtai_sem.h>
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#include <rtai_msg.h>
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int rt_sleep_ns(RTIME x);
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#endif
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