ceph/src/dpdk/examples/vm_power_manager/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <string.h>
  36 #include <stdint.h>
  37 #include <errno.h>
  38 #include <sys/epoll.h>
  39 #include <fcntl.h>
  40 #include <unistd.h>
  41 #include <stdlib.h>
  42 #include <unistd.h>
  43 #include <signal.h>
  44 #include <errno.h>
  45
  46 #include <sys/queue.h>
  47
  48 #include <rte_common.h>
  49 #include <rte_eal.h>
  50 #include <rte_launch.h>
  51 #include <rte_log.h>
  52 #include <rte_per_lcore.h>
  53 #include <rte_lcore.h>
  54 #include <rte_debug.h>
  55
  56 #include "channel_manager.h"
  57 #include "channel_monitor.h"
  58 #include "power_manager.h"
  59 #include "vm_power_cli.h"
  60
  61 static int
  62 run_monitor(__attribute__((unused)) void *arg)
  63 {
  64         if (channel_monitor_init() < 0) {
  65                 printf("Unable to initialize channel monitor\n");
  66                 return -1;
  67         }
  68         run_channel_monitor();
  69         return 0;
  70 }
  71
  72 static void
  73 sig_handler(int signo)
  74 {
  75         printf("Received signal %d, exiting...\n", signo);
  76         channel_monitor_exit();
  77         channel_manager_exit();
  78         power_manager_exit();
  79
  80 }
  81
  82 int
  83 main(int argc, char **argv)
  84 {
  85         int ret;
  86         unsigned lcore_id;
  87
  88         ret = rte_eal_init(argc, argv);
  89         if (ret < 0)
  90                 rte_panic("Cannot init EAL\n");
  91
  92         signal(SIGINT, sig_handler);
  93         signal(SIGTERM, sig_handler);
  94
  95         lcore_id = rte_get_next_lcore(-1, 1, 0);
  96         if (lcore_id == RTE_MAX_LCORE) {
  97                 RTE_LOG(ERR, EAL, "A minimum of two cores are required to run "
  98                                 "application\n");
  99                 return 0;
 100         }
 101         rte_eal_remote_launch(run_monitor, NULL, lcore_id);
 102
 103         if (power_manager_init() < 0) {
 104                 printf("Unable to initialize power manager\n");
 105                 return -1;
 106         }
 107         if (channel_manager_init(CHANNEL_MGR_DEFAULT_HV_PATH) < 0) {
 108                 printf("Unable to initialize channel manager\n");
 109                 return -1;
 110         }
 111         run_cli(NULL);
 112
 113         rte_eal_mp_wait_lcore();
 114         return 0;
 115 }