Exemplos de vlib_process_suspend em C++ (Cpp)

Exemplo n.º 1

static uword
startup_config_process (vlib_main_t * vm,
			vlib_node_runtime_t * rt, vlib_frame_t * f)
{
  unix_main_t *um = &unix_main;
  u8 *buf = 0;
  uword l, n = 1;

  vlib_process_suspend (vm, 2.0);

  while (um->unix_config_complete == 0)
    vlib_process_suspend (vm, 0.1);

  if (um->startup_config_filename)
    {
      unformat_input_t sub_input;
      int fd;
      struct stat s;
      char *fn = (char *) um->startup_config_filename;

      fd = open (fn, O_RDONLY);
      if (fd < 0)
	{
	  clib_warning ("failed to open `%s'", fn);
	  return 0;
	}

      if (fstat (fd, &s) < 0)
	{
	  clib_warning ("failed to stat `%s'", fn);
	bail:
	  close (fd);
	  return 0;
	}

      if (!(S_ISREG (s.st_mode) || S_ISLNK (s.st_mode)))
	{
	  clib_warning ("not a regular file: `%s'", fn);
	  goto bail;
	}

      while (n > 0)
	{
	  l = vec_len (buf);
	  vec_resize (buf, 4096);
	  n = read (fd, buf + l, 4096);
	  if (n > 0)
	    {
	      _vec_len (buf) = l + n;
	      if (n < 4096)
		break;
	    }
	  else
	    break;
	}
      if (um->log_fd && vec_len (buf))
	{
	  u8 *lv = 0;
	  lv = format (lv, "%U: ***** Startup Config *****\n%v",
		       format_timeval, 0 /* current bat-time */ ,
		       0 /* current bat-format */ ,
		       buf);
	  {
	    int rv __attribute__ ((unused)) =
	      write (um->log_fd, lv, vec_len (lv));
	  }
	  vec_reset_length (lv);
	  lv = format (lv, "%U: ***** End Startup Config *****\n",
		       format_timeval, 0 /* current bat-time */ ,
		       0 /* current bat-format */ );
	  {
	    int rv __attribute__ ((unused)) =
	      write (um->log_fd, lv, vec_len (lv));
	  }
	  vec_free (lv);
	}

      if (vec_len (buf))
	{
	  unformat_init_vector (&sub_input, buf);
	  vlib_cli_input (vm, &sub_input, 0, 0);
	  /* frees buf for us */
	  unformat_free (&sub_input);
	}
      close (fd);
    }
  return 0;
}

Exemplo n.º 2

Arquivo: perfmon_periodic.c Projeto: vpp-dev/vpp

static void
handle_timeout (vlib_main_t * vm, perfmon_main_t * pm, f64 now)
{
  int i;
  int last_set, all;

  last_set = clib_bitmap_last_set (pm->thread_bitmap);
  all = (last_set == ~0);

  if (all || clib_bitmap_get (pm->thread_bitmap, 0))
    disable_events (pm);

  /* And also on worker threads */
  for (i = 1; i < vec_len (vlib_mains); i++)
    {
      if (vlib_mains[i] == 0)
	continue;
      if (all || clib_bitmap_get (pm->thread_bitmap, i))
	vlib_mains[i]->worker_thread_main_loop_callback = (void *)
	  worker_thread_stop_event;
    }

  /* Make sure workers have stopped collection */
  if (i > 1)
    {
      f64 deadman = vlib_time_now (vm) + 1.0;

      for (i = 1; i < vec_len (vlib_mains); i++)
	{
	  /* Has the worker actually stopped collecting data? */
	  while (vlib_mains[i]->worker_thread_main_loop_callback)
	    {
	      if (vlib_time_now (vm) > deadman)
		{
		  clib_warning ("Thread %d deadman timeout!", i);
		  break;
		}
	      vlib_process_suspend (pm->vlib_main, 1e-3);
	    }
	}
    }
  scrape_and_clear_counters (pm);
  pm->current_event += pm->n_active;
  if (pm->current_event >= vec_len (pm->single_events_to_collect))
    {
      pm->current_event = 0;
      pm->state = PERFMON_STATE_OFF;
      return;
    }

  if (all || clib_bitmap_get (pm->thread_bitmap, 0))
    enable_current_events (pm);

  /* And also on worker threads */
  for (i = 1; i < vec_len (vlib_mains); i++)
    {
      if (vlib_mains[i] == 0)
	continue;
      if (all || clib_bitmap_get (pm->thread_bitmap, i))
	vlib_mains[i]->worker_thread_main_loop_callback = (void *)
	  worker_thread_start_event;
    }
}