lib/graph/notification/notification.c

   1 /*
   2  * Babeltrace Plug-in Notification
   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 #define BT_LOG_TAG "NOTIF"
  28 #include <babeltrace/lib-logging-internal.h>
  29
  30 #include <babeltrace/graph/private-notification.h>
  31 #include <babeltrace/graph/notification-internal.h>
  32 #include <babeltrace/graph/graph-internal.h>
  33 #include <babeltrace/assert-internal.h>
  34 #include <babeltrace/assert-pre-internal.h>
  35
  36 BT_ASSERT_PRE_FUNC
  37 static inline void _init_seq_num(struct bt_notification *notification)
  38 {
  39         notification->seq_num = UINT64_C(-1);
  40 }
  41
  42 #ifdef BT_DEV_MODE
  43 # define init_seq_num   _init_seq_num
  44 #else
  45 # define init_seq_num(_notif)
  46 #endif /* BT_DEV_MODE */
  47
  48 BT_HIDDEN
  49 void bt_notification_init(struct bt_notification *notification,
  50                 enum bt_notification_type type,
  51                 bt_object_release_func release,
  52                 struct bt_graph *graph)
  53 {
  54         BT_ASSERT(type >= 0 && type < BT_NOTIFICATION_TYPE_NR);
  55         notification->type = type;
  56         init_seq_num(notification);
  57         bt_object_init_shared(&notification->base, release);
  58         notification->graph = graph;
  59
  60         if (graph) {
  61                 bt_graph_add_notification(graph, notification);
  62         }
  63 }
  64
  65 enum bt_notification_type bt_notification_get_type(
  66                 struct bt_notification *notification)
  67 {
  68         BT_ASSERT_PRE_NON_NULL(notification, "Notification");
  69         return notification->type;
  70 }
  71
  72 BT_HIDDEN
  73 void bt_notification_unlink_graph(struct bt_notification *notif)
  74 {
  75         BT_ASSERT(notif);
  76         notif->graph = NULL;
  77 }
  78
  79 struct bt_notification *bt_notification_borrow_from_private(
  80                 struct bt_private_notification *priv_notif)
  81 {
  82         return (void *) priv_notif;
  83 }