-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * 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.
- * * Neither the name of Intel Corporation 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 COPYRIGHT HOLDERS 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 COPYRIGHT
- * OWNER 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <pthread.h>
+#include <signal.h>
#include <sched.h>
#include <assert.h>
#include <string.h>
#include <rte_memory.h>
#include <rte_log.h>
+#include "eal_private.h"
#include "eal_thread.h"
RTE_DECLARE_PER_LCORE(unsigned , _socket_id);
return RTE_PER_LCORE(_socket_id);
}
+int
+rte_lcore_has_role(unsigned int lcore_id, enum rte_lcore_role_t role)
+{
+ struct rte_config *cfg = rte_eal_get_configuration();
+
+ if (lcore_id >= RTE_MAX_LCORE)
+ return -EINVAL;
+
+ return cfg->lcore_role[lcore_id] == role;
+}
+
int eal_cpuset_socket_id(rte_cpuset_t *cpusetp)
{
unsigned cpu = 0;
return ret;
}
+
+
+struct rte_thread_ctrl_params {
+ void *(*start_routine)(void *);
+ void *arg;
+ pthread_barrier_t configured;
+};
+
+static void *rte_thread_init(void *arg)
+{
+ int ret;
+ struct rte_thread_ctrl_params *params = arg;
+ void *(*start_routine)(void *) = params->start_routine;
+ void *routine_arg = params->arg;
+
+ ret = pthread_barrier_wait(¶ms->configured);
+ if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
+ pthread_barrier_destroy(¶ms->configured);
+ free(params);
+ }
+
+ return start_routine(routine_arg);
+}
+
+__rte_experimental int
+rte_ctrl_thread_create(pthread_t *thread, const char *name,
+ const pthread_attr_t *attr,
+ void *(*start_routine)(void *), void *arg)
+{
+ struct rte_thread_ctrl_params *params;
+ unsigned int lcore_id;
+ rte_cpuset_t cpuset;
+ int cpu_found, ret;
+
+ params = malloc(sizeof(*params));
+ if (!params)
+ return -1;
+
+ params->start_routine = start_routine;
+ params->arg = arg;
+
+ pthread_barrier_init(¶ms->configured, NULL, 2);
+
+ ret = pthread_create(thread, attr, rte_thread_init, (void *)params);
+ if (ret != 0) {
+ free(params);
+ return ret;
+ }
+
+ if (name != NULL) {
+ ret = rte_thread_setname(*thread, name);
+ if (ret < 0)
+ goto fail;
+ }
+
+ cpu_found = 0;
+ CPU_ZERO(&cpuset);
+ for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+ if (eal_cpu_detected(lcore_id) &&
+ rte_lcore_has_role(lcore_id, ROLE_OFF)) {
+ CPU_SET(lcore_id, &cpuset);
+ cpu_found = 1;
+ }
+ }
+ /* if no detected cpu is off, use master core */
+ if (!cpu_found)
+ CPU_SET(rte_get_master_lcore(), &cpuset);
+
+ ret = pthread_setaffinity_np(*thread, sizeof(cpuset), &cpuset);
+ if (ret < 0)
+ goto fail;
+
+ ret = pthread_barrier_wait(¶ms->configured);
+ if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
+ pthread_barrier_destroy(¶ms->configured);
+ free(params);
+ }
+
+ return 0;
+
+fail:
+ if (PTHREAD_BARRIER_SERIAL_THREAD ==
+ pthread_barrier_wait(¶ms->configured)) {
+ pthread_barrier_destroy(¶ms->configured);
+ free(params);
+ }
+ pthread_cancel(*thread);
+ pthread_join(*thread, NULL);
+ return ret;
+}