lib/graph/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-internal.h>
  28 #include <babeltrace/ctf-ir/stream-internal.h>
  29 #include <babeltrace/graph/notification-stream-internal.h>
  30
  31 static
  32 void bt_notification_stream_end_destroy(struct bt_object *obj)
  33 {
  34         struct bt_notification_stream_end *notification =
  35                         (struct bt_notification_stream_end *) obj;
  36
  37         BT_PUT(notification->stream);
  38         g_free(notification);
  39 }
  40
  41 struct bt_notification *bt_notification_stream_end_create(
  42                 struct bt_ctf_stream *stream)
  43 {
  44         struct bt_notification_stream_end *notification;
  45
  46         if (!stream || stream->pos.fd >= 0) {
  47                 goto error;
  48         }
  49
  50         notification = g_new0(struct bt_notification_stream_end, 1);
  51         bt_notification_init(&notification->parent,
  52                         BT_NOTIFICATION_TYPE_STREAM_END,
  53                         bt_notification_stream_end_destroy);
  54         notification->stream = bt_get(stream);
  55         return &notification->parent;
  56 error:
  57         return NULL;
  58 }
  59
  60 struct bt_ctf_packet *bt_notification_stream_end_get_stream(
  61                 struct bt_notification *notification)
  62 {
  63         struct bt_notification_stream_end *stream_end;
  64
  65         stream_end = container_of(notification,
  66                         struct bt_notification_stream_end, parent);
  67         return bt_get(stream_end->stream);
  68 }
  69
  70 static
  71 void bt_notification_stream_begin_destroy(struct bt_object *obj)
  72 {
  73         struct bt_notification_stream_begin *notification =
  74                         (struct bt_notification_stream_begin *) obj;
  75
  76         BT_PUT(notification->stream);
  77         g_free(notification);
  78 }
  79
  80 struct bt_notification *bt_notification_stream_begin_create(
  81                 struct bt_ctf_stream *stream)
  82 {
  83         struct bt_notification_stream_begin *notification;
  84
  85         if (!stream || stream->pos.fd >= 0) {
  86                 goto error;
  87         }
  88
  89         notification = g_new0(struct bt_notification_stream_begin, 1);
  90         bt_notification_init(&notification->parent,
  91                         BT_NOTIFICATION_TYPE_STREAM_BEGIN,
  92                         bt_notification_stream_begin_destroy);
  93         notification->stream = bt_get(stream);
  94         return &notification->parent;
  95 error:
  96         return NULL;
  97 }
  98
  99 struct bt_ctf_packet *bt_notification_stream_begin_get_stream(
 100                 struct bt_notification *notification)
 101 {
 102         struct bt_notification_stream_begin *stream_begin;
 103
 104         stream_begin = container_of(notification,
 105                         struct bt_notification_stream_begin, parent);
 106         return bt_get(stream_begin->stream);
 107 }