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