| /* |
| * (C) 2023 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| * All Rights Reserved |
| * |
| * Author: Eric Wild <ewild@sysmocom.de> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program 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 Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| #include <cerrno> |
| #include <cstdlib> |
| #include <cstring> |
| #include <iostream> |
| #include <thread> |
| |
| extern "C" { |
| #include <pthread.h> |
| } |
| |
| #include "threadsched.h" |
| |
| sched_params::target scheduling_target; |
| |
| void set_sched_target(sched_params::target t) |
| { |
| scheduling_target = t; |
| } |
| |
| void set_name_aff_sched(std::thread::native_handle_type h, const char *name, int cpunum, int schedtype, int prio) |
| { |
| pthread_setname_np(h, name); |
| |
| cpu_set_t cpuset; |
| |
| CPU_ZERO(&cpuset); |
| CPU_SET(cpunum, &cpuset); |
| |
| if (pthread_setaffinity_np(h, sizeof(cpuset), &cpuset) < 0) { |
| std::cerr << name << " affinity: errreur! " << std::strerror(errno); |
| return exit(0); |
| } |
| |
| sched_param sch_params; |
| sch_params.sched_priority = prio; |
| if (pthread_setschedparam(h, schedtype, &sch_params) < 0) { |
| std::cerr << name << " sched: errreur! " << std::strerror(errno); |
| return exit(0); |
| } |
| } |
| |
| static pthread_t do_spawn_thr(const char *name, int cpunum, int schedtype, int prio, worker_func_sig fun, void *arg) |
| { |
| pthread_t thread; |
| |
| pthread_attr_t attr; |
| pthread_attr_init(&attr); |
| |
| sched_param sch_params; |
| sch_params.sched_priority = prio; |
| cpu_set_t cpuset; |
| CPU_ZERO(&cpuset); |
| CPU_SET(cpunum, &cpuset); |
| auto a = pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpuset); |
| a |= pthread_attr_setschedpolicy(&attr, schedtype); |
| a |= pthread_attr_setschedparam(&attr, &sch_params); |
| a |= pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED); |
| if (a) |
| std::cerr << "thread arg rc:" << a << std::endl; |
| pthread_create(&thread, &attr, fun, arg); |
| pthread_setname_np(thread, name); |
| pthread_attr_destroy(&attr); |
| return thread; |
| } |
| |
| void set_name_aff_sched(std::thread::native_handle_type h, sched_params::thread_names name) |
| { |
| auto tgt = schdp[scheduling_target][name]; |
| // std::cerr << "scheduling for: " << tgt.name << ":" << tgt.core << std::endl; |
| set_name_aff_sched(h, tgt.name, tgt.core, tgt.schedtype, tgt.prio); |
| } |
| |
| void set_name_aff_sched(sched_params::thread_names name) |
| { |
| set_name_aff_sched(pthread_self(), name); |
| } |
| |
| pthread_t spawn_worker_thread(sched_params::thread_names name, worker_func_sig fun, void *arg) |
| { |
| auto tgt = schdp[scheduling_target][name]; |
| // std::cerr << "scheduling for: " << tgt.name << ":" << tgt.core << " prio:" << tgt.prio << std::endl; |
| return do_spawn_thr(tgt.name, tgt.core, tgt.schedtype, tgt.prio, fun, arg); |
| } |