lib/graph/notification/inactivity.c

   1 /*
   2  * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include <babeltrace/object-internal.h>
  24 #include <babeltrace/compiler-internal.h>
  25 #include <babeltrace/ctf-ir/clock-class.h>
  26 #include <babeltrace/graph/clock-class-priority-map.h>
  27 #include <babeltrace/graph/notification-internal.h>
  28 #include <babeltrace/graph/notification-inactivity-internal.h>
  29
  30 static
  31 void bt_notification_inactivity_destroy(struct bt_object *obj)
  32 {
  33         struct bt_notification_inactivity *notification =
  34                         (struct bt_notification_inactivity *) obj;
  35
  36         bt_put(notification->cc_prio_map);
  37
  38         if (notification->clock_values) {
  39                 g_hash_table_destroy(notification->clock_values);
  40         }
  41
  42         g_free(notification);
  43 }
  44
  45 struct bt_notification *bt_notification_inactivity_create(
  46                 struct bt_clock_class_priority_map *cc_prio_map)
  47 {
  48         struct bt_notification_inactivity *notification;
  49         struct bt_notification *ret_notif = NULL;
  50
  51         if (!cc_prio_map) {
  52                 goto error;
  53         }
  54
  55         notification = g_new0(struct bt_notification_inactivity, 1);
  56         if (!notification) {
  57                 goto error;
  58         }
  59         bt_notification_init(&notification->parent,
  60                         BT_NOTIFICATION_TYPE_INACTIVITY,
  61                         bt_notification_inactivity_destroy);
  62         ret_notif = &notification->parent;
  63         notification->clock_values = g_hash_table_new_full(g_direct_hash,
  64                         g_direct_equal, bt_put, bt_put);
  65         if (!notification->clock_values) {
  66                 goto error;
  67         }
  68
  69         notification->cc_prio_map = bt_get(cc_prio_map);
  70         goto end;
  71
  72 error:
  73         BT_PUT(ret_notif);
  74
  75 end:
  76         return ret_notif;
  77 }
  78
  79 extern struct bt_clock_class_priority_map *
  80 bt_notification_inactivity_get_clock_class_priority_map(
  81                 struct bt_notification *notification)
  82 {
  83         struct bt_clock_class_priority_map *cc_prio_map = NULL;
  84         struct bt_notification_inactivity *inactivity_notification;
  85
  86         if (bt_notification_get_type(notification) !=
  87                         BT_NOTIFICATION_TYPE_INACTIVITY) {
  88                 goto end;
  89         }
  90
  91         inactivity_notification = container_of(notification,
  92                         struct bt_notification_inactivity, parent);
  93         cc_prio_map = bt_get(inactivity_notification->cc_prio_map);
  94 end:
  95         return cc_prio_map;
  96 }
  97
  98 struct bt_ctf_clock_value *bt_notification_inactivity_get_clock_value(
  99                 struct bt_notification *notification,
 100                 struct bt_ctf_clock_class *clock_class)
 101 {
 102         struct bt_ctf_clock_value *clock_value = NULL;
 103         struct bt_notification_inactivity *inactivity_notification;
 104
 105         if (!notification || !clock_class) {
 106                 goto end;
 107         }
 108
 109         if (bt_notification_get_type(notification) !=
 110                         BT_NOTIFICATION_TYPE_INACTIVITY) {
 111                 goto end;
 112         }
 113
 114         inactivity_notification = container_of(notification,
 115                         struct bt_notification_inactivity, parent);
 116         clock_value = g_hash_table_lookup(inactivity_notification->clock_values,
 117                 clock_class);
 118         bt_get(clock_value);
 119
 120 end:
 121         return clock_value;
 122 }
 123
 124 int bt_notification_inactivity_set_clock_value(
 125                 struct bt_notification *notification,
 126                 struct bt_ctf_clock_value *clock_value)
 127 {
 128         int ret = 0;
 129         uint64_t prio;
 130         struct bt_ctf_clock_class *clock_class = NULL;
 131         struct bt_notification_inactivity *inactivity_notification;
 132
 133         if (!notification || !clock_value || notification->frozen) {
 134                 ret = -1;
 135                 goto end;
 136         }
 137
 138         if (bt_notification_get_type(notification) !=
 139                         BT_NOTIFICATION_TYPE_INACTIVITY) {
 140                 goto end;
 141         }
 142
 143         inactivity_notification = container_of(notification,
 144                         struct bt_notification_inactivity, parent);
 145         clock_class = bt_ctf_clock_value_get_class(clock_value);
 146         ret = bt_clock_class_priority_map_get_clock_class_priority(
 147                 inactivity_notification->cc_prio_map, clock_class, &prio);
 148         if (ret) {
 149                 /*
 150                  * Clock value's class is not mapped to a priority
 151                  * within the scope of this notification.
 152                  */
 153                 goto end;
 154         }
 155
 156         g_hash_table_insert(inactivity_notification->clock_values,
 157                 clock_class, bt_get(clock_value));
 158         clock_class = NULL;
 159
 160 end:
 161         bt_put(clock_class);
 162         return ret;
 163 }