oddbuf_periodic.c

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/*
 * oddbuf_periodic.c - skeleton plug-in periodic function
 *
 * Copyright (c) <current-year> <your-organization>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <vlib/vlib.h>
#include <vppinfra/error.h>
#include <oddbuf/oddbuf.h>

static void
handle_event1 (oddbuf_main_t * pm, f64 now, uword event_data)
{
  clib_warning ("received ODDBUF_EVENT1");
}

static void
handle_event2 (oddbuf_main_t * pm, f64 now, uword event_data)
{
  clib_warning ("received ODDBUF_EVENT2");
}

static void
handle_periodic_enable_disable (oddbuf_main_t * pm, f64 now, uword event_data)
{
  clib_warning ("Periodic timeouts now %s",
                event_data ? "enabled" : "disabled");
  pm->periodic_timer_enabled = event_data;
}

static void
handle_timeout (oddbuf_main_t * pm, f64 now)
{
  clib_warning ("timeout at %.2f", now);
}

static uword
oddbuf_periodic_process (vlib_main_t * vm,
                         vlib_node_runtime_t * rt, vlib_frame_t * f)
{
  oddbuf_main_t *pm = &oddbuf_main;
  f64 now;
  f64 timeout = 10.0;
  uword *event_data = 0;
  uword event_type;
  int i;

  while (1)
    {
      if (pm->periodic_timer_enabled)
        vlib_process_wait_for_event_or_clock (vm, timeout);
      else
        vlib_process_wait_for_event (vm);

      now = vlib_time_now (vm);

      event_type = vlib_process_get_events (vm, (uword **) & event_data);

      switch (event_type)
        {
          /* Handle ODDBUF_EVENT1 */
        case ODDBUF_EVENT1:
          for (i = 0; i < vec_len (event_data); i++)
            handle_event1 (pm, now, event_data[i]);
          break;

          /* Handle ODDBUF_EVENT2 */
        case ODDBUF_EVENT2:
          for (i = 0; i < vec_len (event_data); i++)
            handle_event2 (pm, now, event_data[i]);
          break;
          /* Handle the periodic timer on/off event */
        case ODDBUF_EVENT_PERIODIC_ENABLE_DISABLE:
          for (i = 0; i < vec_len (event_data); i++)
            handle_periodic_enable_disable (pm, now, event_data[i]);
          break;

          /* Handle periodic timeouts */
        case ~0:
          handle_timeout (pm, now);
          break;
        }
      vec_reset_length (event_data);
    }
  return 0;                     /* or not */
}

void
oddbuf_create_periodic_process (oddbuf_main_t * omp)
{
  /* Already created the process node? */
  if (omp->periodic_node_index > 0)
    return;

  /* No, create it now and make a note of the node index */
  omp->periodic_node_index = vlib_process_create (omp->vlib_main, "oddbuf-periodic-process", oddbuf_periodic_process, 16        /* log2_n_stack_bytes */
    );
}

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */