lib/graph/notification/notification.c

   1 /*
   2  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   3  * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to deal
   7  * in the Software without restriction, including without limitation the rights
   8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9  * copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23
  24 #define BT_LOG_TAG "NOTIF"
  25 #include <babeltrace/lib-logging-internal.h>
  26
  27 #include <babeltrace/assert-internal.h>
  28 #include <babeltrace/assert-pre-internal.h>
  29 #include <babeltrace/graph/notification-const.h>
  30 #include <babeltrace/graph/notification-internal.h>
  31 #include <babeltrace/graph/graph-internal.h>
  32
  33 BT_ASSERT_PRE_FUNC
  34 static inline void _init_seq_num(struct bt_notification *notification)
  35 {
  36         notification->seq_num = UINT64_C(-1);
  37 }
  38
  39 #ifdef BT_DEV_MODE
  40 # define init_seq_num   _init_seq_num
  41 #else
  42 # define init_seq_num(_notif)
  43 #endif /* BT_DEV_MODE */
  44
  45 BT_HIDDEN
  46 void bt_notification_init(struct bt_notification *notification,
  47                 enum bt_notification_type type,
  48                 bt_object_release_func release,
  49                 struct bt_graph *graph)
  50 {
  51         BT_ASSERT(type >= 0 &&
  52                 type <= BT_NOTIFICATION_TYPE_PACKET_END);
  53         notification->type = type;
  54         init_seq_num(notification);
  55         bt_object_init_shared(&notification->base, release);
  56         notification->graph = graph;
  57
  58         if (graph) {
  59                 bt_graph_add_notification(graph, notification);
  60         }
  61 }
  62
  63 enum bt_notification_type bt_notification_get_type(
  64                 const struct bt_notification *notification)
  65 {
  66         BT_ASSERT_PRE_NON_NULL(notification, "Notification");
  67         return notification->type;
  68 }
  69
  70 BT_HIDDEN
  71 void bt_notification_unlink_graph(struct bt_notification *notif)
  72 {
  73         BT_ASSERT(notif);
  74         notif->graph = NULL;
  75 }
  76
  77 void bt_notification_get_ref(const struct bt_notification *notification)
  78 {
  79         bt_object_get_ref(notification);
  80 }
  81
  82 void bt_notification_put_ref(const struct bt_notification *notification)
  83 {
  84         bt_object_put_ref(notification);
  85 }