/******************************************************************************* OpenAirInterface Copyright(c) 1999 - 2014 Eurecom OpenAirInterface is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. OpenAirInterface is distributed in the hope that 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 OpenAirInterface.The full GNU General Public License is included in this distribution in the file called "COPYING". If not, see <http://www.gnu.org/licenses/>. Contact Information OpenAirInterface Admin: openair_admin@eurecom.fr OpenAirInterface Tech : openair_tech@eurecom.fr OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, 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. It also implements an API for the SCHED_DEADLINE kernel scheduler. * \author F. Kaltenberger and Navid Nikaein * \date 2013 * \version 0.1 * \company Eurecom * \email: florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr * \note * \warning This code will be removed when a legacy libc API becomes available. */ void set_latency_target(void); #ifndef RTAI #include <time.h> #include <errno.h> #include <stdint.h> #include <sys/stat.h> #include <fcntl.h> #include <pthread.h> #include <linux/kernel.h> #include <linux/types.h> #include <syscall.h> #include <math.h> #define RTIME long long int #define rt_printk printf RTIME rt_get_time_ns (void); int rt_sleep_ns (RTIME x); void check_clock(void); int fill_modeled_runtime_table(uint16_t runtime_phy_rx[29][6],uint16_t runtime_phy_tx[29][6]); 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); 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); /** * see https://www.kernel.org/doc/Documentation/scheduler/sched-deadline.txt or * http://www.blaess.fr/christophe/2014/04/05/utiliser-un-appel-systeme-inconnu-de-la-libc/ */ #ifdef DEADLINE_SCHEDULER #define gettid() syscall(__NR_gettid) #define SCHED_DEADLINE 6 /* XXX use the proper syscall numbers */ #ifdef __x86_64__ #define __NR_sched_setattr 314 #define __NR_sched_getattr 315 #endif #ifdef __i386__ #define __NR_sched_setattr 351 #define __NR_sched_getattr 352 #endif struct sched_attr { __u32 size; __u32 sched_policy; __u64 sched_flags; /* SCHED_NORMAL, SCHED_BATCH */ __s32 sched_nice; /* SCHED_FIFO, SCHED_RR */ __u32 sched_priority; /* SCHED_DEADLINE (nsec) */ __u64 sched_runtime; __u64 sched_deadline; __u64 sched_period; }; int sched_setattr(pid_t pid, const struct sched_attr *attr, unsigned int flags); int sched_getattr(pid_t pid,struct sched_attr *attr,unsigned int size, unsigned int flags); #endif #define gettid() syscall(__NR_gettid) // for gettid #else #include <rtai_hal.h> #include <rtai_lxrt.h> #include <rtai_sem.h> #include <rtai_msg.h> int rt_sleep_ns(RTIME x); #endif