lib/plugin-system/notification/stream.c

   1 /*
   2  * Babeltrace Plug-in Stream-related Notifications
   3  *
   4  * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   5  *
   6  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26
  27 #include <babeltrace/compiler.h>
  28 #include <babeltrace/plugin/notification/stream-internal.h>
  29
  30 static
  31 void bt_notification_stream_end_destroy(struct bt_object *obj)
  32 {
  33         struct bt_notification_stream_end *notification =
  34                         (struct bt_notification_stream_end *) obj;
  35
  36         BT_PUT(notification->stream);
  37         g_free(notification);
  38 }
  39
  40 struct bt_notification *bt_notification_stream_end_create(
  41                 struct bt_ctf_stream *stream)
  42 {
  43         struct bt_notification_stream_end *notification;
  44
  45         if (!stream) {
  46                 goto error;
  47         }
  48
  49         notification = g_new0(struct bt_notification_stream_end, 1);
  50         bt_notification_init(&notification->parent,
  51                         BT_NOTIFICATION_TYPE_STREAM_END,
  52                         bt_notification_stream_end_destroy);
  53         notification->stream = bt_get(stream);
  54         return &notification->parent;
  55 error:
  56         return NULL;
  57 }
  58
  59 struct bt_ctf_packet *bt_notification_stream_end_get_stream(
  60                 struct bt_notification *notification)
  61 {
  62         struct bt_notification_stream_end *stream_end;
  63
  64         stream_end = container_of(notification,
  65                         struct bt_notification_stream_end, parent);
  66         return bt_get(stream_end->stream);
  67 }