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34ac9eaf JG |
1 | /* |
2 | * filter.c | |
3 | * | |
4 | * Babeltrace Filter Component | |
5 | * | |
6 | * Copyright 2016 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/values.h> | |
33b34c43 | 31 | #include <babeltrace/component/input.h> |
d71dcf2c | 32 | #include <babeltrace/component/component-filter-internal.h> |
33b34c43 | 33 | #include <babeltrace/component/component-internal.h> |
d3e4dcd8 | 34 | #include <babeltrace/component/component-class-internal.h> |
33b34c43 PP |
35 | #include <babeltrace/component/notification/notification.h> |
36 | #include <babeltrace/component/notification/iterator-internal.h> | |
34ac9eaf | 37 | |
34a9ed19 JG |
38 | enum bt_component_status bt_component_filter_set_minimum_input_count( |
39 | struct bt_component *component, | |
40 | unsigned int minimum) | |
41 | { | |
42 | struct bt_component_filter *filter; | |
43 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
44 | ||
45 | if (!component) { | |
46 | ret = BT_COMPONENT_STATUS_INVALID; | |
47 | goto end; | |
48 | } | |
49 | ||
d3e4dcd8 | 50 | if (bt_component_get_class_type(component) != BT_COMPONENT_CLASS_TYPE_FILTER) { |
34a9ed19 JG |
51 | ret = BT_COMPONENT_STATUS_UNSUPPORTED; |
52 | goto end; | |
53 | } | |
54 | ||
55 | if (!component->initializing) { | |
56 | ret = BT_COMPONENT_STATUS_INVALID; | |
57 | goto end; | |
58 | } | |
59 | ||
60 | filter = container_of(component, struct bt_component_filter, parent); | |
61 | filter->input.min_count = minimum; | |
62 | end: | |
63 | return ret; | |
64 | } | |
65 | ||
66 | enum bt_component_status bt_component_filter_set_maximum_input_count( | |
67 | struct bt_component *component, | |
68 | unsigned int maximum) | |
69 | { | |
70 | struct bt_component_filter *filter; | |
71 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
72 | ||
73 | if (!component) { | |
74 | ret = BT_COMPONENT_STATUS_INVALID; | |
75 | goto end; | |
76 | } | |
77 | ||
d3e4dcd8 | 78 | if (bt_component_get_class_type(component) != BT_COMPONENT_CLASS_TYPE_FILTER) { |
34a9ed19 JG |
79 | ret = BT_COMPONENT_STATUS_UNSUPPORTED; |
80 | goto end; | |
81 | } | |
82 | ||
83 | if (!component->initializing) { | |
84 | ret = BT_COMPONENT_STATUS_INVALID; | |
85 | goto end; | |
86 | } | |
87 | ||
88 | filter = container_of(component, struct bt_component_filter, parent); | |
89 | filter->input.max_count = maximum; | |
90 | end: | |
91 | return ret; | |
92 | } | |
93 | ||
94 | enum bt_component_status | |
95 | bt_component_filter_get_input_count(struct bt_component *component, | |
96 | unsigned int *count) | |
97 | { | |
98 | struct bt_component_filter *filter; | |
99 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
100 | ||
101 | if (!component || !count) { | |
102 | ret = BT_COMPONENT_STATUS_INVALID; | |
103 | goto end; | |
104 | } | |
105 | ||
d3e4dcd8 | 106 | if (bt_component_get_class_type(component) != BT_COMPONENT_CLASS_TYPE_FILTER) { |
34a9ed19 JG |
107 | ret = BT_COMPONENT_STATUS_UNSUPPORTED; |
108 | goto end; | |
109 | } | |
110 | ||
111 | filter = container_of(component, struct bt_component_filter, parent); | |
112 | *count = (unsigned int) filter->input.iterators->len; | |
113 | end: | |
114 | return ret; | |
115 | } | |
116 | ||
117 | enum bt_component_status | |
118 | bt_component_filter_get_input_iterator(struct bt_component *component, | |
119 | unsigned int input, struct bt_notification_iterator **iterator) | |
120 | { | |
121 | struct bt_component_filter *filter; | |
122 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
123 | ||
124 | if (!component || !iterator) { | |
125 | ret = BT_COMPONENT_STATUS_INVALID; | |
126 | goto end; | |
127 | } | |
128 | ||
d3e4dcd8 | 129 | if (bt_component_get_class_type(component) != BT_COMPONENT_CLASS_TYPE_FILTER) { |
34a9ed19 JG |
130 | ret = BT_COMPONENT_STATUS_UNSUPPORTED; |
131 | goto end; | |
132 | } | |
133 | ||
134 | filter = container_of(component, struct bt_component_filter, parent); | |
135 | if (input >= (unsigned int) filter->input.iterators->len) { | |
136 | ret = BT_COMPONENT_STATUS_INVALID; | |
137 | goto end; | |
138 | } | |
139 | ||
140 | *iterator = bt_get(g_ptr_array_index(filter->input.iterators, input)); | |
141 | end: | |
142 | return ret; | |
143 | } | |
144 | ||
145 | enum bt_component_status bt_component_filter_add_iterator( | |
146 | struct bt_component *component, | |
147 | struct bt_notification_iterator *iterator) | |
148 | { | |
149 | struct bt_component_filter *filter; | |
150 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
d3e4dcd8 | 151 | struct bt_component_class_filter *filter_class; |
34a9ed19 JG |
152 | |
153 | if (!component || !iterator) { | |
154 | ret = BT_COMPONENT_STATUS_INVALID; | |
155 | goto end; | |
156 | } | |
157 | ||
d3e4dcd8 | 158 | if (bt_component_get_class_type(component) != BT_COMPONENT_CLASS_TYPE_FILTER) { |
34a9ed19 JG |
159 | ret = BT_COMPONENT_STATUS_UNSUPPORTED; |
160 | goto end; | |
161 | } | |
162 | ||
163 | filter = container_of(component, struct bt_component_filter, parent); | |
164 | if (filter->input.iterators->len == filter->input.max_count) { | |
165 | ret = BT_COMPONENT_STATUS_UNSUPPORTED; | |
166 | goto end; | |
167 | } | |
168 | ||
d3e4dcd8 PP |
169 | filter_class = container_of(component->class, struct bt_component_class_filter, parent); |
170 | ||
171 | if (filter_class->methods.add_iterator) { | |
172 | ret = filter_class->methods.add_iterator(component, iterator); | |
34a9ed19 JG |
173 | if (ret != BT_COMPONENT_STATUS_OK) { |
174 | goto end; | |
175 | } | |
176 | } | |
177 | ||
178 | g_ptr_array_add(filter->input.iterators, bt_get(iterator)); | |
179 | end: | |
180 | return ret; | |
181 | } | |
182 | ||
183 | struct bt_notification_iterator *bt_component_filter_create_iterator( | |
184 | struct bt_component *component) | |
185 | { | |
5645cd95 | 186 | return bt_component_create_iterator(component); |
34a9ed19 | 187 | } |
526fc31a JG |
188 | |
189 | static | |
190 | void bt_component_filter_destroy(struct bt_component *component) | |
191 | { | |
192 | struct bt_component_filter *filter = container_of(component, | |
193 | struct bt_component_filter, parent); | |
194 | ||
195 | component_input_fini(&filter->input); | |
196 | } | |
197 | ||
198 | BT_HIDDEN | |
199 | struct bt_component *bt_component_filter_create( | |
200 | struct bt_component_class *class, struct bt_value *params) | |
201 | { | |
202 | struct bt_component_filter *filter = NULL; | |
203 | enum bt_component_status ret; | |
204 | ||
205 | filter = g_new0(struct bt_component_filter, 1); | |
206 | if (!filter) { | |
207 | goto end; | |
208 | } | |
209 | ||
210 | filter->parent.class = bt_get(class); | |
211 | ret = bt_component_init(&filter->parent, bt_component_filter_destroy); | |
212 | if (ret != BT_COMPONENT_STATUS_OK) { | |
213 | goto error; | |
214 | } | |
215 | ||
216 | if (component_input_init(&filter->input)) { | |
217 | goto error; | |
218 | } | |
219 | end: | |
220 | return filter ? &filter->parent : NULL; | |
221 | error: | |
222 | BT_PUT(filter); | |
223 | goto end; | |
224 | } | |
225 | ||
226 | BT_HIDDEN | |
227 | enum bt_component_status bt_component_filter_validate( | |
228 | struct bt_component *component) | |
229 | { | |
230 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
231 | struct bt_component_filter *filter; | |
232 | ||
233 | if (!component) { | |
234 | ret = BT_COMPONENT_STATUS_INVALID; | |
235 | goto end; | |
236 | } | |
237 | ||
238 | if (!component->class) { | |
239 | ret = BT_COMPONENT_STATUS_INVALID; | |
240 | goto end; | |
241 | } | |
242 | ||
d3e4dcd8 | 243 | if (component->class->type != BT_COMPONENT_CLASS_TYPE_FILTER) { |
526fc31a JG |
244 | ret = BT_COMPONENT_STATUS_INVALID; |
245 | goto end; | |
246 | } | |
247 | ||
248 | filter = container_of(component, struct bt_component_filter, parent); | |
526fc31a JG |
249 | ret = component_input_validate(&filter->input); |
250 | if (ret) { | |
251 | goto end; | |
252 | } | |
253 | end: | |
254 | return ret; | |
255 | } |