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47e5a032 JG |
1 | /* |
2 | * iterator.c | |
3 | * | |
4 | * Babeltrace Notification Iterator | |
5 | * | |
6 | * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
7 | * | |
8 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
9 | * | |
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
11 | * of this software and associated documentation files (the "Software"), to deal | |
12 | * in the Software without restriction, including without limitation the rights | |
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
14 | * copies of the Software, and to permit persons to whom the Software is | |
15 | * furnished to do so, subject to the following conditions: | |
16 | * | |
17 | * The above copyright notice and this permission notice shall be included in | |
18 | * all copies or substantial portions of the Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
26 | * SOFTWARE. | |
27 | */ | |
28 | ||
29 | #include <babeltrace/compiler.h> | |
30 | #include <babeltrace/plugin/component.h> | |
31 | #include <babeltrace/plugin/source-internal.h> | |
32 | #include <babeltrace/plugin/notification/iterator.h> | |
33 | #include <babeltrace/plugin/notification/iterator-internal.h> | |
34 | ||
35 | static | |
8738a040 | 36 | void bt_notification_iterator_destroy(struct bt_ctf_ref *ref) |
47e5a032 | 37 | { |
8738a040 JG |
38 | struct bt_notification_iterator *iterator; |
39 | ||
40 | if (!ref) { | |
41 | return; | |
42 | } | |
43 | ||
44 | iterator = container_of(ref, struct bt_notification_iterator, | |
45 | ref_count); | |
46 | assert(iterator->user_destroy || !iterator->user_data); | |
47 | iterator->user_destroy(iterator); | |
48 | g_free(iterator); | |
47e5a032 JG |
49 | } |
50 | ||
51 | BT_HIDDEN | |
52 | struct bt_notification_iterator *bt_notification_iterator_create( | |
53 | struct bt_component *component) | |
54 | { | |
55 | struct bt_notification_iterator *iterator = NULL; | |
56 | ||
8738a040 JG |
57 | if (!component || |
58 | bt_component_get_type(component) != BT_COMPONENT_TYPE_SOURCE) { | |
47e5a032 JG |
59 | goto end; |
60 | } | |
61 | ||
62 | iterator = g_new0(struct bt_notification_iterator, 1); | |
63 | if (!iterator) { | |
64 | goto end; | |
65 | } | |
66 | ||
67 | bt_ctf_ref_init(&iterator->ref_count); | |
68 | end: | |
69 | return iterator; | |
70 | } | |
71 | ||
72 | BT_HIDDEN | |
73 | enum bt_notification_iterator_status bt_notification_iterator_validate( | |
74 | struct bt_notification_iterator *iterator) | |
75 | { | |
8738a040 JG |
76 | enum bt_notification_iterator_status ret = |
77 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
47e5a032 JG |
78 | |
79 | if (!iterator || !iterator->get || !iterator->next) { | |
80 | ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL; | |
81 | goto end; | |
82 | } | |
83 | end: | |
84 | return ret; | |
85 | } | |
86 | ||
87 | void bt_notification_iterator_get(struct bt_notification_iterator *iterator) | |
88 | { | |
89 | if (!iterator) { | |
90 | return; | |
91 | } | |
92 | ||
93 | bt_ctf_ref_get(&iterator->ref_count); | |
94 | } | |
95 | ||
96 | void bt_notification_iterator_put(struct bt_notification_iterator *iterator) | |
97 | { | |
98 | if (!iterator) { | |
99 | return; | |
100 | } | |
101 | ||
102 | bt_ctf_ref_put(&iterator->ref_count, bt_notification_iterator_destroy); | |
103 | } | |
8738a040 JG |
104 | |
105 | enum bt_notification_iterator_status bt_notification_iterator_set_get_cb( | |
106 | struct bt_notification_iterator *iterator, | |
107 | bt_notification_iterator_get_cb get) | |
108 | { | |
109 | enum bt_notification_iterator_status ret; | |
110 | ||
111 | if (!iterator || !get) { | |
112 | ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL; | |
113 | goto end; | |
114 | } | |
115 | ||
116 | ||
117 | end: | |
118 | return ret; | |
119 | } |