lib/librte_eal/windows/eal/eal.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Intel Corporation
   3  */
   4
   5 #include <io.h>
   6 #include <fcntl.h>
   7 #include <rte_debug.h>
   8 #include <rte_eal.h>
   9 #include <rte_errno.h>
  10 #include <rte_lcore.h>
  11 #include <eal_thread.h>
  12 #include <eal_private.h>
  13
  14 /* Address of global and public configuration */
  15 static struct rte_config rte_config;
  16
  17 /* internal configuration (per-core) */
  18 struct lcore_config lcore_config[RTE_MAX_LCORE];
  19
  20 /* Return a pointer to the configuration structure */
  21 struct rte_config *
  22 rte_eal_get_configuration(void)
  23 {
  24         return &rte_config;
  25 }
  26
  27 static int
  28 sync_func(void *arg __rte_unused)
  29 {
  30         return 0;
  31 }
  32
  33 static void
  34 rte_eal_init_alert(const char *msg)
  35 {
  36         fprintf(stderr, "EAL: FATAL: %s\n", msg);
  37         RTE_LOG(ERR, EAL, "%s\n", msg);
  38 }
  39
  40  /* Launch threads, called at application init(). */
  41 int
  42 rte_eal_init(int argc __rte_unused, char **argv __rte_unused)
  43 {
  44         int i;
  45
  46         /* create a map of all processors in the system */
  47         eal_create_cpu_map();
  48
  49         if (rte_eal_cpu_init() < 0) {
  50                 rte_eal_init_alert("Cannot detect lcores.");
  51                 rte_errno = ENOTSUP;
  52                 return -1;
  53         }
  54
  55         eal_thread_init_master(rte_config.master_lcore);
  56
  57         RTE_LCORE_FOREACH_SLAVE(i) {
  58
  59                 /*
  60                  * create communication pipes between master thread
  61                  * and children
  62                  */
  63                 if (_pipe(lcore_config[i].pipe_master2slave,
  64                         sizeof(char), _O_BINARY) < 0)
  65                         rte_panic("Cannot create pipe\n");
  66                 if (_pipe(lcore_config[i].pipe_slave2master,
  67                         sizeof(char), _O_BINARY) < 0)
  68                         rte_panic("Cannot create pipe\n");
  69
  70                 lcore_config[i].state = WAIT;
  71
  72                 /* create a thread for each lcore */
  73                 if (eal_thread_create(&lcore_config[i].thread_id) != 0)
  74                         rte_panic("Cannot create thread\n");
  75         }
  76
  77         /*
  78          * Launch a dummy function on all slave lcores, so that master lcore
  79          * knows they are all ready when this function returns.
  80          */
  81         rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
  82         rte_eal_mp_wait_lcore();
  83         return 0;
  84 }