Commit | Line | Data |
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fb2dcc52 JG |
1 | /* |
2 | * component-class.c | |
3 | * | |
4 | * Babeltrace Plugin Component Class | |
33b34c43 | 5 | * |
3310b217 | 6 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
fb2dcc52 JG |
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> | |
33b34c43 | 30 | #include <babeltrace/component/component-class-internal.h> |
b8a06801 | 31 | #include <babeltrace/ref.h> |
1e4d8103 | 32 | #include <stdbool.h> |
fb2dcc52 JG |
33 | #include <glib.h> |
34 | ||
35 | static | |
b8a06801 | 36 | void bt_component_class_destroy(struct bt_object *obj) |
fb2dcc52 JG |
37 | { |
38 | struct bt_component_class *class; | |
33b34c43 | 39 | int i; |
fb2dcc52 | 40 | |
b8a06801 JG |
41 | assert(obj); |
42 | class = container_of(obj, struct bt_component_class, base); | |
33b34c43 PP |
43 | |
44 | /* Call destroy listeners in reverse registration order */ | |
45 | for (i = class->destroy_listeners->len - 1; i >= 0; i--) { | |
d3e4dcd8 | 46 | struct bt_component_class_destroy_listener *listener = |
33b34c43 | 47 | &g_array_index(class->destroy_listeners, |
d3e4dcd8 | 48 | struct bt_component_class_destroy_listener, |
33b34c43 PP |
49 | i); |
50 | ||
51 | listener->func(class, listener->data); | |
52 | } | |
53 | ||
fb2dcc52 JG |
54 | if (class->name) { |
55 | g_string_free(class->name, TRUE); | |
56 | } | |
7c7c0433 JG |
57 | if (class->description) { |
58 | g_string_free(class->description, TRUE); | |
59 | } | |
5536d9a6 PP |
60 | if (class->help) { |
61 | g_string_free(class->help, TRUE); | |
62 | } | |
33b34c43 PP |
63 | if (class->destroy_listeners) { |
64 | g_array_free(class->destroy_listeners, TRUE); | |
65 | } | |
b8a06801 | 66 | |
fb2dcc52 JG |
67 | g_free(class); |
68 | } | |
69 | ||
d3e4dcd8 PP |
70 | static |
71 | int bt_component_class_init(struct bt_component_class *class, | |
72 | enum bt_component_class_type type, const char *name) | |
fb2dcc52 | 73 | { |
d3e4dcd8 PP |
74 | int ret = 0; |
75 | ||
76 | bt_object_init(class, bt_component_class_destroy); | |
77 | class->type = type; | |
78 | class->name = g_string_new(name); | |
79 | if (!class->name) { | |
80 | goto error; | |
81 | } | |
82 | ||
83 | class->description = g_string_new(NULL); | |
84 | if (!class->description) { | |
85 | goto error; | |
86 | } | |
87 | ||
5536d9a6 PP |
88 | class->help = g_string_new(NULL); |
89 | if (!class->help) { | |
90 | goto error; | |
91 | } | |
92 | ||
d3e4dcd8 PP |
93 | class->destroy_listeners = g_array_new(FALSE, TRUE, |
94 | sizeof(struct bt_component_class_destroy_listener)); | |
95 | if (!class->destroy_listeners) { | |
96 | goto error; | |
97 | } | |
98 | ||
99 | goto end; | |
6ba0b073 | 100 | |
d3e4dcd8 PP |
101 | error: |
102 | BT_PUT(class); | |
103 | ret = -1; | |
104 | ||
105 | end: | |
106 | return ret; | |
107 | } | |
108 | ||
109 | struct bt_component_class *bt_component_class_source_create(const char *name, | |
d3eb6e8f PP |
110 | bt_component_class_notification_iterator_get_method notification_iterator_get_method, |
111 | bt_component_class_notification_iterator_next_method notification_iterator_next_method) | |
d3e4dcd8 PP |
112 | { |
113 | struct bt_component_class_source *source_class = NULL; | |
114 | int ret; | |
115 | ||
d3eb6e8f PP |
116 | if (!name || !notification_iterator_get_method || |
117 | !notification_iterator_next_method) { | |
6ba0b073 PP |
118 | goto end; |
119 | } | |
fb2dcc52 | 120 | |
d3e4dcd8 PP |
121 | source_class = g_new0(struct bt_component_class_source, 1); |
122 | if (!source_class) { | |
fb2dcc52 JG |
123 | goto end; |
124 | } | |
125 | ||
d3e4dcd8 PP |
126 | ret = bt_component_class_init(&source_class->parent, |
127 | BT_COMPONENT_CLASS_TYPE_SOURCE, name); | |
128 | if (ret) { | |
129 | /* | |
130 | * If bt_component_class_init() fails, the component | |
131 | * class is put, therefore its memory is already | |
132 | * freed. | |
133 | */ | |
134 | source_class = NULL; | |
135 | goto end; | |
136 | } | |
137 | ||
d3eb6e8f PP |
138 | source_class->methods.iterator.get = notification_iterator_get_method; |
139 | source_class->methods.iterator.next = notification_iterator_next_method; | |
d3e4dcd8 PP |
140 | |
141 | end: | |
142 | return &source_class->parent; | |
143 | } | |
144 | ||
145 | struct bt_component_class *bt_component_class_filter_create(const char *name, | |
d3eb6e8f PP |
146 | bt_component_class_notification_iterator_get_method notification_iterator_get_method, |
147 | bt_component_class_notification_iterator_next_method notification_iterator_next_method) | |
d3e4dcd8 PP |
148 | { |
149 | struct bt_component_class_filter *filter_class = NULL; | |
150 | int ret; | |
151 | ||
d3eb6e8f PP |
152 | if (!name || !notification_iterator_get_method || |
153 | !notification_iterator_next_method) { | |
fb2dcc52 JG |
154 | goto end; |
155 | } | |
6ba0b073 | 156 | |
d3e4dcd8 PP |
157 | filter_class = g_new0(struct bt_component_class_filter, 1); |
158 | if (!filter_class) { | |
159 | goto end; | |
6ba0b073 PP |
160 | } |
161 | ||
d3e4dcd8 PP |
162 | ret = bt_component_class_init(&filter_class->parent, |
163 | BT_COMPONENT_CLASS_TYPE_FILTER, name); | |
164 | if (ret) { | |
165 | /* | |
166 | * If bt_component_class_init() fails, the component | |
167 | * class is put, therefore its memory is already | |
168 | * freed. | |
169 | */ | |
170 | filter_class = NULL; | |
33b34c43 PP |
171 | goto end; |
172 | } | |
d3e4dcd8 | 173 | |
d3eb6e8f PP |
174 | filter_class->methods.iterator.get = notification_iterator_get_method; |
175 | filter_class->methods.iterator.next = notification_iterator_next_method; | |
d3e4dcd8 | 176 | |
fb2dcc52 | 177 | end: |
d3e4dcd8 PP |
178 | return &filter_class->parent; |
179 | } | |
180 | ||
181 | struct bt_component_class *bt_component_class_sink_create(const char *name, | |
182 | bt_component_class_sink_consume_method consume_method) | |
183 | { | |
184 | struct bt_component_class_sink *sink_class = NULL; | |
185 | int ret; | |
186 | ||
187 | if (!name || !consume_method) { | |
188 | goto end; | |
189 | } | |
190 | ||
191 | sink_class = g_new0(struct bt_component_class_sink, 1); | |
192 | if (!sink_class) { | |
193 | goto end; | |
194 | } | |
195 | ||
196 | ret = bt_component_class_init(&sink_class->parent, | |
197 | BT_COMPONENT_CLASS_TYPE_SINK, name); | |
198 | if (ret) { | |
199 | /* | |
200 | * If bt_component_class_init() fails, the component | |
201 | * class is put, therefore its memory is already | |
202 | * freed. | |
203 | */ | |
204 | sink_class = NULL; | |
205 | goto end; | |
206 | } | |
207 | ||
208 | sink_class->methods.consume = consume_method; | |
209 | ||
210 | end: | |
211 | return &sink_class->parent; | |
212 | } | |
213 | ||
214 | int bt_component_class_set_init_method( | |
215 | struct bt_component_class *component_class, | |
216 | bt_component_class_init_method init_method) | |
217 | { | |
218 | int ret = 0; | |
219 | ||
1e4d8103 | 220 | if (!component_class || component_class->frozen || !init_method) { |
d3e4dcd8 PP |
221 | ret = -1; |
222 | goto end; | |
223 | } | |
224 | ||
225 | component_class->methods.init = init_method; | |
226 | ||
227 | end: | |
228 | return ret; | |
229 | } | |
230 | ||
231 | int bt_component_class_set_destroy_method( | |
232 | struct bt_component_class *component_class, | |
233 | bt_component_class_destroy_method destroy_method) | |
234 | { | |
235 | int ret = 0; | |
236 | ||
1e4d8103 | 237 | if (!component_class || component_class->frozen || !destroy_method) { |
d3e4dcd8 PP |
238 | ret = -1; |
239 | goto end; | |
240 | } | |
241 | ||
242 | component_class->methods.destroy = destroy_method; | |
243 | ||
244 | end: | |
245 | return ret; | |
246 | } | |
247 | ||
d3eb6e8f PP |
248 | int bt_component_class_source_set_notification_iterator_init_method( |
249 | struct bt_component_class *component_class, | |
250 | bt_component_class_notification_iterator_init_method notification_iterator_init_method) | |
251 | { | |
252 | struct bt_component_class_source *source_class; | |
253 | int ret = 0; | |
254 | ||
255 | if (!component_class || component_class->frozen || | |
256 | !notification_iterator_init_method || | |
257 | component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) { | |
258 | ret = -1; | |
259 | goto end; | |
260 | } | |
261 | ||
262 | source_class = container_of(component_class, | |
263 | struct bt_component_class_source, parent); | |
264 | source_class->methods.iterator.init = notification_iterator_init_method; | |
265 | ||
266 | end: | |
267 | return ret; | |
268 | } | |
269 | ||
270 | int bt_component_class_source_set_notification_iterator_destroy_method( | |
271 | struct bt_component_class *component_class, | |
272 | bt_component_class_notification_iterator_destroy_method notification_iterator_destroy_method) | |
273 | { | |
274 | struct bt_component_class_source *source_class; | |
275 | int ret = 0; | |
276 | ||
277 | if (!component_class || component_class->frozen || | |
278 | !notification_iterator_destroy_method || | |
279 | component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) { | |
280 | ret = -1; | |
281 | goto end; | |
282 | } | |
283 | ||
284 | source_class = container_of(component_class, | |
285 | struct bt_component_class_source, parent); | |
286 | source_class->methods.iterator.destroy = | |
287 | notification_iterator_destroy_method; | |
288 | ||
289 | end: | |
290 | return ret; | |
291 | } | |
292 | ||
293 | int bt_component_class_source_set_notification_iterator_seek_time_method( | |
294 | struct bt_component_class *component_class, | |
295 | bt_component_class_notification_iterator_seek_time_method notification_iterator_seek_time_method) | |
296 | { | |
297 | struct bt_component_class_source *source_class; | |
298 | int ret = 0; | |
299 | ||
300 | if (!component_class || component_class->frozen || | |
301 | !notification_iterator_seek_time_method || | |
302 | component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) { | |
303 | ret = -1; | |
304 | goto end; | |
305 | } | |
306 | ||
307 | source_class = container_of(component_class, | |
308 | struct bt_component_class_source, parent); | |
309 | source_class->methods.iterator.seek_time = | |
310 | notification_iterator_seek_time_method; | |
311 | ||
312 | end: | |
313 | return ret; | |
314 | } | |
315 | ||
316 | int bt_component_class_filter_set_notification_iterator_init_method( | |
317 | struct bt_component_class *component_class, | |
318 | bt_component_class_notification_iterator_init_method notification_iterator_init_method) | |
319 | { | |
320 | struct bt_component_class_filter *filter_class; | |
321 | int ret = 0; | |
322 | ||
323 | if (!component_class || component_class->frozen || | |
324 | !notification_iterator_init_method || | |
325 | component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) { | |
326 | ret = -1; | |
327 | goto end; | |
328 | } | |
329 | ||
330 | filter_class = container_of(component_class, | |
331 | struct bt_component_class_filter, parent); | |
332 | filter_class->methods.iterator.init = notification_iterator_init_method; | |
333 | ||
334 | end: | |
335 | return ret; | |
336 | } | |
337 | ||
338 | int bt_component_class_filter_set_notification_iterator_destroy_method( | |
339 | struct bt_component_class *component_class, | |
340 | bt_component_class_notification_iterator_destroy_method notification_iterator_destroy_method) | |
341 | { | |
342 | struct bt_component_class_filter *filter_class; | |
343 | int ret = 0; | |
344 | ||
345 | if (!component_class || component_class->frozen || | |
346 | !notification_iterator_destroy_method || | |
347 | component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) { | |
348 | ret = -1; | |
349 | goto end; | |
350 | } | |
351 | ||
352 | filter_class = container_of(component_class, | |
353 | struct bt_component_class_filter, parent); | |
354 | filter_class->methods.iterator.destroy = | |
355 | notification_iterator_destroy_method; | |
356 | ||
357 | end: | |
358 | return ret; | |
359 | } | |
360 | ||
361 | int bt_component_class_filter_set_notification_iterator_seek_time_method( | |
362 | struct bt_component_class *component_class, | |
363 | bt_component_class_notification_iterator_seek_time_method notification_iterator_seek_time_method) | |
364 | { | |
365 | struct bt_component_class_filter *filter_class; | |
366 | int ret = 0; | |
367 | ||
368 | if (!component_class || component_class->frozen || | |
369 | !notification_iterator_seek_time_method || | |
370 | component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) { | |
371 | ret = -1; | |
372 | goto end; | |
373 | } | |
374 | ||
375 | filter_class = container_of(component_class, | |
376 | struct bt_component_class_filter, parent); | |
377 | filter_class->methods.iterator.seek_time = | |
378 | notification_iterator_seek_time_method; | |
379 | ||
380 | end: | |
381 | return ret; | |
382 | } | |
383 | ||
384 | int bt_component_class_set_description( | |
d3e4dcd8 PP |
385 | struct bt_component_class *component_class, |
386 | const char *description) | |
387 | { | |
388 | int ret = 0; | |
389 | ||
1e4d8103 | 390 | if (!component_class || component_class->frozen || !description) { |
d3e4dcd8 PP |
391 | ret = -1; |
392 | goto end; | |
393 | } | |
394 | ||
395 | g_string_assign(component_class->description, description); | |
396 | ||
397 | end: | |
398 | return ret; | |
fb2dcc52 | 399 | } |
38b48196 | 400 | |
5536d9a6 PP |
401 | int bt_component_class_set_help( |
402 | struct bt_component_class *component_class, | |
403 | const char *help) | |
404 | { | |
405 | int ret = 0; | |
406 | ||
407 | if (!component_class || component_class->frozen || !help) { | |
408 | ret = -1; | |
409 | goto end; | |
410 | } | |
411 | ||
412 | g_string_assign(component_class->help, help); | |
413 | ||
414 | end: | |
415 | return ret; | |
416 | } | |
417 | ||
38b48196 JG |
418 | const char *bt_component_class_get_name( |
419 | struct bt_component_class *component_class) | |
420 | { | |
421 | return component_class ? component_class->name->str : NULL; | |
422 | } | |
423 | ||
d3e4dcd8 | 424 | enum bt_component_class_type bt_component_class_get_type( |
38b48196 JG |
425 | struct bt_component_class *component_class) |
426 | { | |
427 | return component_class ? component_class->type : | |
d3e4dcd8 | 428 | BT_COMPONENT_CLASS_TYPE_UNKNOWN; |
38b48196 JG |
429 | } |
430 | ||
33b34c43 | 431 | const char *bt_component_class_get_description( |
38b48196 JG |
432 | struct bt_component_class *component_class) |
433 | { | |
22e22462 PP |
434 | return component_class && component_class->description && |
435 | component_class->description->str[0] != '\0' ? | |
6ba0b073 | 436 | component_class->description->str : NULL; |
38b48196 | 437 | } |
7c7c0433 | 438 | |
5536d9a6 PP |
439 | const char *bt_component_class_get_help( |
440 | struct bt_component_class *component_class) | |
441 | { | |
22e22462 PP |
442 | return component_class && component_class->help && |
443 | component_class->help->str[0] != '\0' ? | |
5536d9a6 PP |
444 | component_class->help->str : NULL; |
445 | } | |
446 | ||
33b34c43 PP |
447 | BT_HIDDEN |
448 | int bt_component_class_add_destroy_listener(struct bt_component_class *class, | |
449 | bt_component_class_destroy_listener_func func, void *data) | |
7c7c0433 | 450 | { |
33b34c43 | 451 | int ret = 0; |
d3e4dcd8 | 452 | struct bt_component_class_destroy_listener listener; |
33b34c43 | 453 | |
1e4d8103 | 454 | if (!class || class->frozen || !func) { |
33b34c43 PP |
455 | ret = -1; |
456 | goto end; | |
457 | } | |
458 | ||
459 | listener.func = func; | |
460 | listener.data = data; | |
461 | g_array_append_val(class->destroy_listeners, listener); | |
462 | ||
463 | end: | |
464 | return ret; | |
7c7c0433 | 465 | } |
d3e4dcd8 PP |
466 | |
467 | extern int bt_component_class_sink_set_add_iterator_method( | |
468 | struct bt_component_class *component_class, | |
469 | bt_component_class_sink_add_iterator_method add_iterator_method) | |
470 | { | |
471 | struct bt_component_class_sink *sink_class; | |
472 | int ret = 0; | |
473 | ||
1e4d8103 PP |
474 | if (!component_class || component_class->frozen || |
475 | !add_iterator_method || | |
d3e4dcd8 PP |
476 | component_class->type != BT_COMPONENT_CLASS_TYPE_SINK) { |
477 | ret = -1; | |
478 | goto end; | |
479 | } | |
480 | ||
481 | sink_class = container_of(component_class, | |
482 | struct bt_component_class_sink, parent); | |
483 | sink_class->methods.add_iterator = add_iterator_method; | |
484 | ||
485 | end: | |
486 | return ret; | |
487 | } | |
488 | ||
489 | extern int bt_component_class_filter_set_add_iterator_method( | |
490 | struct bt_component_class *component_class, | |
491 | bt_component_class_filter_add_iterator_method add_iterator_method) | |
492 | { | |
493 | struct bt_component_class_filter *filter_class; | |
494 | int ret = 0; | |
495 | ||
1e4d8103 PP |
496 | if (!component_class || component_class->frozen || |
497 | !add_iterator_method || | |
d3e4dcd8 PP |
498 | component_class->type != |
499 | BT_COMPONENT_CLASS_TYPE_FILTER) { | |
500 | ret = -1; | |
501 | goto end; | |
502 | } | |
503 | ||
504 | filter_class = container_of(component_class, | |
505 | struct bt_component_class_filter, parent); | |
506 | filter_class->methods.add_iterator = add_iterator_method; | |
507 | ||
508 | end: | |
509 | return ret; | |
510 | } | |
1e4d8103 PP |
511 | |
512 | int bt_component_class_freeze( | |
513 | struct bt_component_class *component_class) | |
514 | { | |
515 | int ret = 0; | |
516 | ||
517 | if (!component_class) { | |
518 | ret = -1; | |
519 | goto end; | |
520 | } | |
521 | ||
522 | component_class->frozen = true; | |
523 | ||
524 | end: | |
525 | return ret; | |
526 | } |