Implement ctf fs iterator functions
[babeltrace.git] / lib / plugin-system / iterator.c
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/ref.h>
31 #include <babeltrace/plugin/component.h>
32 #include <babeltrace/plugin/source-internal.h>
33 #include <babeltrace/plugin/notification/iterator.h>
34 #include <babeltrace/plugin/notification/iterator-internal.h>
35
36 static
37 void bt_notification_iterator_destroy(struct bt_object *obj)
38 {
39 struct bt_notification_iterator *iterator;
40
41 assert(obj);
42 iterator = container_of(obj, struct bt_notification_iterator,
43 base);
44 assert(iterator->user_destroy || !iterator->user_data);
45 if (iterator->user_destroy) {
46 iterator->user_destroy(iterator);
47 }
48 BT_PUT(iterator->component);
49 g_free(iterator);
50 }
51
52 BT_HIDDEN
53 struct bt_notification_iterator *bt_notification_iterator_create(
54 struct bt_component *component)
55 {
56 struct bt_notification_iterator *iterator = NULL;
57
58 if (!component ||
59 bt_component_get_type(component) != BT_COMPONENT_TYPE_SOURCE) {
60 goto end;
61 }
62
63 iterator = g_new0(struct bt_notification_iterator, 1);
64 if (!iterator) {
65 goto end;
66 }
67
68 iterator->component = bt_get(component);
69 bt_object_init(iterator, bt_notification_iterator_destroy);
70 end:
71 return iterator;
72 }
73
74 BT_HIDDEN
75 enum bt_notification_iterator_status bt_notification_iterator_validate(
76 struct bt_notification_iterator *iterator)
77 {
78 enum bt_notification_iterator_status ret =
79 BT_NOTIFICATION_ITERATOR_STATUS_OK;
80
81 if (!iterator || !iterator->get || !iterator->next) {
82 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
83 goto end;
84 }
85 end:
86 return ret;
87 }
88
89 enum bt_notification_iterator_status bt_notification_iterator_set_get_cb(
90 struct bt_notification_iterator *iterator,
91 bt_notification_iterator_get_cb get)
92 {
93 enum bt_notification_iterator_status ret =
94 BT_NOTIFICATION_ITERATOR_STATUS_OK;
95
96 if (!iterator || !get) {
97 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
98 goto end;
99 }
100
101 iterator->get = get;
102 end:
103 return ret;
104 }
105
106 enum bt_notification_iterator_status
107 bt_notification_iterator_set_next_cb(struct bt_notification_iterator *iterator,
108 bt_notification_iterator_next_cb next)
109 {
110 enum bt_notification_iterator_status ret =
111 BT_NOTIFICATION_ITERATOR_STATUS_OK;
112
113 if (!iterator || !next) {
114 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
115 goto end;
116 }
117
118 iterator->next = next;
119 end:
120 return ret;
121 }
122
123 enum bt_notification_iterator_status
124 bt_notification_iterator_set_destroy_cb(
125 struct bt_notification_iterator *iterator,
126 bt_notification_iterator_destroy_cb destroy)
127 {
128 enum bt_notification_iterator_status ret =
129 BT_NOTIFICATION_ITERATOR_STATUS_OK;
130
131 if (!iterator || !destroy) {
132 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
133 goto end;
134 }
135
136 iterator->user_destroy = destroy;
137 end:
138 return ret;
139 }
140
141 void *bt_notification_iterator_get_private_data(
142 struct bt_notification_iterator *iterator)
143 {
144 return iterator ? iterator->user_data : NULL;
145 }
146
147 enum bt_notification_iterator_status
148 bt_notification_iterator_set_private_data(
149 struct bt_notification_iterator *iterator, void *data)
150 {
151 enum bt_notification_iterator_status ret =
152 BT_NOTIFICATION_ITERATOR_STATUS_OK;
153
154 if (!iterator || !data) {
155 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
156 goto end;
157 }
158
159 iterator->user_data = data;
160 end:
161 return ret;
162 }
163
164 struct bt_component *bt_notification_iterator_get_component(
165 struct bt_notification_iterator *iterator)
166 {
167 return bt_get(iterator->component);
168 }
169
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