examples/helloworld/main.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */

#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <sys/queue.h>

#include <rte_memory.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_debug.h>

static int
lcore_hello(__attribute__((unused)) void *arg)
{
    unsigned lcore_id;
    lcore_id = rte_lcore_id();
    printf("hello from core %u\n", lcore_id);
    return 0;
}

int
main(int argc, char **argv)
{
    int ret;
    unsigned lcore_id;

    ret = rte_eal_init(argc, argv);
    if (ret < 0)
        rte_panic("Cannot init EAL\n");

    /* call lcore_hello() on every slave lcore */
    RTE_LCORE_FOREACH_SLAVE(lcore_id) {
        rte_eal_remote_launch(lcore_hello, NULL, lcore_id);
    }

    /* call it on master lcore too */
    lcore_hello(NULL);

    rte_eal_mp_wait_lcore();

    /* clean up the EAL */
    rte_eal_cleanup();

    return 0;
}