plugin-dev.h: put selector (type) close to union in structures
[babeltrace.git] / lib / component / iterator.c
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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>
b8a06801 30#include <babeltrace/ref.h>
33b34c43 31#include <babeltrace/component/component.h>
d71dcf2c 32#include <babeltrace/component/component-source-internal.h>
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33#include <babeltrace/component/notification/iterator.h>
34#include <babeltrace/component/notification/iterator-internal.h>
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35
36static
b8a06801 37void bt_notification_iterator_destroy(struct bt_object *obj)
47e5a032 38{
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39 struct bt_notification_iterator *iterator;
40
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41 assert(obj);
42 iterator = container_of(obj, struct bt_notification_iterator,
43 base);
8738a040 44 assert(iterator->user_destroy || !iterator->user_data);
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45 if (iterator->user_destroy) {
46 iterator->user_destroy(iterator);
47 }
413bc2c4 48 BT_PUT(iterator->component);
8738a040 49 g_free(iterator);
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50}
51
52BT_HIDDEN
53struct bt_notification_iterator *bt_notification_iterator_create(
54 struct bt_component *component)
55{
d3e4dcd8 56 enum bt_component_class_type type;
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57 struct bt_notification_iterator *iterator = NULL;
58
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59 if (!component) {
60 goto end;
61 }
62
d3e4dcd8 63 type = bt_component_get_class_type(component);
16b7b023 64 switch (type) {
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65 case BT_COMPONENT_CLASS_TYPE_SOURCE:
66 case BT_COMPONENT_CLASS_TYPE_FILTER:
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67 break;
68 default:
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69 goto end;
70 }
71
72 iterator = g_new0(struct bt_notification_iterator, 1);
73 if (!iterator) {
74 goto end;
75 }
76
413bc2c4 77 iterator->component = bt_get(component);
b8a06801 78 bt_object_init(iterator, bt_notification_iterator_destroy);
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79end:
80 return iterator;
81}
82
83BT_HIDDEN
84enum bt_notification_iterator_status bt_notification_iterator_validate(
85 struct bt_notification_iterator *iterator)
86{
8738a040 87 enum bt_notification_iterator_status ret =
ea8d3e58 88 BT_NOTIFICATION_ITERATOR_STATUS_OK;
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89
90 if (!iterator || !iterator->get || !iterator->next) {
91 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
92 goto end;
93 }
94end:
95 return ret;
96}
97
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98enum bt_notification_iterator_status bt_notification_iterator_set_get_cb(
99 struct bt_notification_iterator *iterator,
100 bt_notification_iterator_get_cb get)
101{
33bceaf8 102 enum bt_notification_iterator_status ret =
ea8d3e58 103 BT_NOTIFICATION_ITERATOR_STATUS_OK;
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104
105 if (!iterator || !get) {
106 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
107 goto end;
108 }
109
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110 iterator->get = get;
111end:
112 return ret;
113}
114
115enum bt_notification_iterator_status
116bt_notification_iterator_set_next_cb(struct bt_notification_iterator *iterator,
117 bt_notification_iterator_next_cb next)
118{
119 enum bt_notification_iterator_status ret =
120 BT_NOTIFICATION_ITERATOR_STATUS_OK;
121
122 if (!iterator || !next) {
123 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
124 goto end;
125 }
126
127 iterator->next = next;
128end:
129 return ret;
130}
131
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132enum bt_notification_iterator_status
133bt_notification_iterator_set_seek_time_cb(
134 struct bt_notification_iterator *iterator,
135 bt_notification_iterator_seek_time_cb seek_time)
136{
137 enum bt_notification_iterator_status ret =
138 BT_NOTIFICATION_ITERATOR_STATUS_OK;
139
140 if (!iterator || !seek_time) {
141 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
142 goto end;
143 }
144
145 iterator->seek_time = seek_time;
146end:
147 return ret;
148}
149
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150enum bt_notification_iterator_status
151bt_notification_iterator_set_destroy_cb(
152 struct bt_notification_iterator *iterator,
153 bt_notification_iterator_destroy_cb destroy)
154{
155 enum bt_notification_iterator_status ret =
156 BT_NOTIFICATION_ITERATOR_STATUS_OK;
157
158 if (!iterator || !destroy) {
159 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
160 goto end;
161 }
162
163 iterator->user_destroy = destroy;
164end:
165 return ret;
166}
167
168void *bt_notification_iterator_get_private_data(
169 struct bt_notification_iterator *iterator)
170{
171 return iterator ? iterator->user_data : NULL;
172}
173
174enum bt_notification_iterator_status
175bt_notification_iterator_set_private_data(
176 struct bt_notification_iterator *iterator, void *data)
177{
178 enum bt_notification_iterator_status ret =
179 BT_NOTIFICATION_ITERATOR_STATUS_OK;
180
181 if (!iterator || !data) {
182 ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL;
183 goto end;
184 }
185
186 iterator->user_data = data;
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187end:
188 return ret;
189}
413bc2c4 190
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191struct bt_notification *bt_notification_iterator_get_notification(
192 struct bt_notification_iterator *iterator)
193{
194 assert(iterator);
195 assert(iterator->get);
196 return iterator->get(iterator);
197}
198
199enum bt_notification_iterator_status
200bt_notification_iterator_next(struct bt_notification_iterator *iterator)
201{
202 assert(iterator);
203 assert(iterator->next);
204 return iterator->next(iterator);
205}
206
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207struct bt_component *bt_notification_iterator_get_component(
208 struct bt_notification_iterator *iterator)
209{
210 return bt_get(iterator->component);
211}
212
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213enum bt_notification_iterator_status bt_notification_iterator_seek_time(
214 struct bt_notification_iterator *iterator,
215 enum bt_notification_iterator_seek_origin seek_origin,
216 int64_t time)
217{
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218 enum bt_notification_iterator_status ret =
219 BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED;
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220 return ret;
221}
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