lib/graph/notification/notification.c

   1 /*
   2  * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25 #define BT_LOG_TAG "NOTIF"
  26 #include <babeltrace/lib-logging-internal.h>
  27
  28 #include <babeltrace/graph/notification-const.h>
  29 #include <babeltrace/graph/notification-internal.h>
  30 #include <babeltrace/graph/graph-internal.h>
  31 #include <babeltrace/assert-internal.h>
  32 #include <babeltrace/assert-pre-internal.h>
  33
  34 BT_ASSERT_PRE_FUNC
  35 static inline void _init_seq_num(struct bt_notification *notification)
  36 {
  37         notification->seq_num = UINT64_C(-1);
  38 }
  39
  40 #ifdef BT_DEV_MODE
  41 # define init_seq_num   _init_seq_num
  42 #else
  43 # define init_seq_num(_notif)
  44 #endif /* BT_DEV_MODE */
  45
  46 BT_HIDDEN
  47 void bt_notification_init(struct bt_notification *notification,
  48                 enum bt_notification_type type,
  49                 bt_object_release_func release,
  50                 struct bt_graph *graph)
  51 {
  52         BT_ASSERT(type >= 0 &&
  53                 type <= BT_NOTIFICATION_TYPE_PACKET_END);
  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                 const 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 }