Commit | Line | Data |
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958f7d11 PP |
1 | /* |
2 | * Copyright 2017 Philippe Proulx <pproulx@efficios.com> | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
5 | * of this software and associated documentation files (the "Software"), to deal | |
6 | * in the Software without restriction, including without limitation the rights | |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
8 | * copies of the Software, and to permit persons to whom the Software is | |
9 | * furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
20 | * SOFTWARE. | |
21 | */ | |
22 | ||
23 | #include <babeltrace/babeltrace-internal.h> | |
282c8cd0 | 24 | #include <babeltrace/compat/uuid-internal.h> |
958f7d11 PP |
25 | #include <babeltrace/ctf-ir/clock-class.h> |
26 | #include <babeltrace/ctf-ir/event.h> | |
27 | #include <babeltrace/graph/clock-class-priority-map.h> | |
28 | #include <babeltrace/graph/component-filter.h> | |
29 | #include <babeltrace/graph/component.h> | |
30 | #include <babeltrace/graph/notification-event.h> | |
31 | #include <babeltrace/graph/notification-inactivity.h> | |
32 | #include <babeltrace/graph/notification-iterator.h> | |
33 | #include <babeltrace/graph/notification.h> | |
34 | #include <babeltrace/graph/port.h> | |
35 | #include <babeltrace/graph/private-component-filter.h> | |
36 | #include <babeltrace/graph/private-component.h> | |
37 | #include <babeltrace/graph/private-component.h> | |
38 | #include <babeltrace/graph/private-connection.h> | |
39 | #include <babeltrace/graph/private-notification-iterator.h> | |
40 | #include <babeltrace/graph/private-port.h> | |
73d5c1ad | 41 | #include <babeltrace/graph/connection.h> |
958f7d11 PP |
42 | #include <plugins-common.h> |
43 | #include <glib.h> | |
c55a9f58 | 44 | #include <stdbool.h> |
958f7d11 | 45 | #include <assert.h> |
0fbb9a9f | 46 | #include <stdlib.h> |
282c8cd0 | 47 | #include <string.h> |
958f7d11 | 48 | |
c3acd5f3 | 49 | #define ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME "assume-absolute-clock-classes" |
65ee897d | 50 | |
958f7d11 PP |
51 | struct muxer_comp { |
52 | /* Array of struct bt_private_notification_iterator * (weak refs) */ | |
53 | GPtrArray *muxer_notif_iters; | |
54 | ||
55 | /* Weak ref */ | |
56 | struct bt_private_component *priv_comp; | |
57 | unsigned int next_port_num; | |
58 | size_t available_input_ports; | |
59 | bool error; | |
a09c6b95 | 60 | bool initializing_muxer_notif_iter; |
282c8cd0 | 61 | bool assume_absolute_clock_classes; |
958f7d11 PP |
62 | }; |
63 | ||
64 | struct muxer_upstream_notif_iter { | |
ab11110e | 65 | /* Owned by this, NULL if ended */ |
958f7d11 PP |
66 | struct bt_notification_iterator *notif_iter; |
67 | ||
089717de PP |
68 | /* |
69 | * This flag is true if the upstream notification iterator's | |
70 | * current notification must be considered for the multiplexing | |
71 | * operations. If the upstream iterator returns | |
72 | * BT_NOTIFICATION_ITERATOR_STATUS_AGAIN, then this object | |
73 | * is considered invalid, because its current notification is | |
74 | * still the previous one, but we already took it into account. | |
75 | * | |
76 | * The value of this flag is not important if notif_iter above | |
77 | * is NULL (which means the upstream iterator is finished). | |
78 | */ | |
79 | bool is_valid; | |
958f7d11 PP |
80 | }; |
81 | ||
282c8cd0 PP |
82 | enum muxer_notif_iter_clock_class_expectation { |
83 | MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_ANY = 0, | |
84 | MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_ABSOLUTE, | |
85 | MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_SPEC_UUID, | |
86 | MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_NO_UUID, | |
87 | }; | |
88 | ||
958f7d11 | 89 | struct muxer_notif_iter { |
ab11110e PP |
90 | /* |
91 | * Array of struct muxer_upstream_notif_iter * (owned by this). | |
92 | * | |
93 | * NOTE: This array is searched in linearly to find the youngest | |
94 | * current notification. Keep this until benchmarks confirm that | |
95 | * another data structure is faster than this for our typical | |
96 | * use cases. | |
97 | */ | |
958f7d11 PP |
98 | GPtrArray *muxer_upstream_notif_iters; |
99 | ||
ab11110e | 100 | /* |
06a2cb0d | 101 | * List of "recently" connected input ports (weak) to |
ab11110e PP |
102 | * handle by this muxer notification iterator. |
103 | * muxer_port_connected() adds entries to this list, and the | |
104 | * entries are removed when a notification iterator is created | |
105 | * on the port's connection and put into | |
106 | * muxer_upstream_notif_iters above by | |
107 | * muxer_notif_iter_handle_newly_connected_ports(). | |
108 | */ | |
109 | GList *newly_connected_priv_ports; | |
958f7d11 PP |
110 | |
111 | /* Next thing to return by the "next" method */ | |
112 | struct bt_notification_iterator_next_return next_next_return; | |
958f7d11 PP |
113 | |
114 | /* Last time returned in a notification */ | |
115 | int64_t last_returned_ts_ns; | |
282c8cd0 PP |
116 | |
117 | /* Clock class expectation state */ | |
118 | enum muxer_notif_iter_clock_class_expectation clock_class_expectation; | |
119 | ||
120 | /* | |
121 | * Expected clock class UUID, only valid when | |
122 | * clock_class_expectation is | |
123 | * MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_SPEC_UUID. | |
124 | */ | |
125 | unsigned char expected_clock_class_uuid[BABELTRACE_UUID_LEN]; | |
958f7d11 PP |
126 | }; |
127 | ||
ab11110e PP |
128 | static |
129 | void destroy_muxer_upstream_notif_iter( | |
130 | struct muxer_upstream_notif_iter *muxer_upstream_notif_iter) | |
131 | { | |
132 | if (!muxer_upstream_notif_iter) { | |
133 | return; | |
134 | } | |
135 | ||
136 | bt_put(muxer_upstream_notif_iter->notif_iter); | |
ab11110e PP |
137 | g_free(muxer_upstream_notif_iter); |
138 | } | |
139 | ||
958f7d11 PP |
140 | static |
141 | struct muxer_upstream_notif_iter *muxer_notif_iter_add_upstream_notif_iter( | |
142 | struct muxer_notif_iter *muxer_notif_iter, | |
143 | struct bt_notification_iterator *notif_iter, | |
144 | struct bt_private_port *priv_port) | |
145 | { | |
146 | struct muxer_upstream_notif_iter *muxer_upstream_notif_iter = | |
147 | g_new0(struct muxer_upstream_notif_iter, 1); | |
148 | ||
149 | if (!muxer_upstream_notif_iter) { | |
150 | goto end; | |
151 | } | |
152 | ||
153 | muxer_upstream_notif_iter->notif_iter = bt_get(notif_iter); | |
089717de | 154 | muxer_upstream_notif_iter->is_valid = false; |
958f7d11 PP |
155 | g_ptr_array_add(muxer_notif_iter->muxer_upstream_notif_iters, |
156 | muxer_upstream_notif_iter); | |
157 | ||
158 | end: | |
159 | return muxer_upstream_notif_iter; | |
160 | } | |
161 | ||
958f7d11 | 162 | static |
147337a3 PP |
163 | enum bt_component_status ensure_available_input_port( |
164 | struct bt_private_component *priv_comp) | |
958f7d11 PP |
165 | { |
166 | struct muxer_comp *muxer_comp = | |
167 | bt_private_component_get_user_data(priv_comp); | |
147337a3 | 168 | enum bt_component_status status = BT_COMPONENT_STATUS_OK; |
958f7d11 | 169 | GString *port_name = NULL; |
958f7d11 PP |
170 | |
171 | assert(muxer_comp); | |
172 | ||
173 | if (muxer_comp->available_input_ports >= 1) { | |
174 | goto end; | |
175 | } | |
176 | ||
177 | port_name = g_string_new("in"); | |
178 | if (!port_name) { | |
147337a3 | 179 | status = BT_COMPONENT_STATUS_NOMEM; |
958f7d11 PP |
180 | goto end; |
181 | } | |
182 | ||
183 | g_string_append_printf(port_name, "%u", muxer_comp->next_port_num); | |
147337a3 PP |
184 | status = bt_private_component_filter_add_input_private_port( |
185 | priv_comp, port_name->str, NULL, NULL); | |
186 | if (status != BT_COMPONENT_STATUS_OK) { | |
958f7d11 PP |
187 | goto end; |
188 | } | |
189 | ||
190 | muxer_comp->available_input_ports++; | |
191 | muxer_comp->next_port_num++; | |
192 | ||
193 | end: | |
194 | if (port_name) { | |
195 | g_string_free(port_name, TRUE); | |
196 | } | |
197 | ||
147337a3 | 198 | return status; |
958f7d11 PP |
199 | } |
200 | ||
958f7d11 | 201 | static |
147337a3 PP |
202 | enum bt_component_status create_output_port( |
203 | struct bt_private_component *priv_comp) | |
958f7d11 | 204 | { |
147337a3 PP |
205 | return bt_private_component_filter_add_output_private_port( |
206 | priv_comp, "out", NULL, NULL); | |
958f7d11 PP |
207 | } |
208 | ||
209 | static | |
210 | void destroy_muxer_comp(struct muxer_comp *muxer_comp) | |
211 | { | |
212 | if (!muxer_comp) { | |
213 | return; | |
214 | } | |
215 | ||
216 | if (muxer_comp->muxer_notif_iters) { | |
217 | g_ptr_array_free(muxer_comp->muxer_notif_iters, TRUE); | |
218 | } | |
219 | ||
220 | g_free(muxer_comp); | |
221 | } | |
222 | ||
65ee897d PP |
223 | static |
224 | struct bt_value *get_default_params(void) | |
225 | { | |
226 | struct bt_value *params; | |
227 | int ret; | |
228 | ||
229 | params = bt_value_map_create(); | |
230 | if (!params) { | |
231 | goto error; | |
232 | } | |
233 | ||
c3acd5f3 JG |
234 | ret = bt_value_map_insert_bool(params, |
235 | ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME, false); | |
65ee897d PP |
236 | if (ret) { |
237 | goto error; | |
238 | } | |
239 | ||
240 | goto end; | |
241 | ||
242 | error: | |
243 | BT_PUT(params); | |
244 | ||
245 | end: | |
246 | return params; | |
247 | } | |
248 | ||
249 | static | |
250 | int configure_muxer_comp(struct muxer_comp *muxer_comp, struct bt_value *params) | |
251 | { | |
252 | struct bt_value *default_params = NULL; | |
253 | struct bt_value *real_params = NULL; | |
282c8cd0 | 254 | struct bt_value *assume_absolute_clock_classes = NULL; |
65ee897d | 255 | int ret = 0; |
c55a9f58 | 256 | bt_bool bool_val; |
65ee897d PP |
257 | |
258 | default_params = get_default_params(); | |
259 | if (!default_params) { | |
260 | goto error; | |
261 | } | |
262 | ||
263 | real_params = bt_value_map_extend(default_params, params); | |
264 | if (!real_params) { | |
265 | goto error; | |
266 | } | |
267 | ||
282c8cd0 | 268 | assume_absolute_clock_classes = bt_value_map_get(real_params, |
c3acd5f3 | 269 | ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME); |
282c8cd0 | 270 | if (!bt_value_is_bool(assume_absolute_clock_classes)) { |
65ee897d PP |
271 | goto error; |
272 | } | |
273 | ||
282c8cd0 | 274 | if (bt_value_bool_get(assume_absolute_clock_classes, &bool_val)) { |
65ee897d PP |
275 | goto error; |
276 | } | |
277 | ||
282c8cd0 | 278 | muxer_comp->assume_absolute_clock_classes = (bool) bool_val; |
c55a9f58 | 279 | |
65ee897d PP |
280 | goto end; |
281 | ||
282 | error: | |
283 | ret = -1; | |
284 | ||
285 | end: | |
286 | bt_put(default_params); | |
287 | bt_put(real_params); | |
282c8cd0 | 288 | bt_put(assume_absolute_clock_classes); |
65ee897d PP |
289 | return ret; |
290 | } | |
291 | ||
958f7d11 PP |
292 | BT_HIDDEN |
293 | enum bt_component_status muxer_init( | |
294 | struct bt_private_component *priv_comp, | |
295 | struct bt_value *params, void *init_data) | |
296 | { | |
297 | int ret; | |
298 | enum bt_component_status status = BT_COMPONENT_STATUS_OK; | |
299 | struct muxer_comp *muxer_comp = g_new0(struct muxer_comp, 1); | |
300 | ||
301 | if (!muxer_comp) { | |
302 | goto error; | |
303 | } | |
304 | ||
65ee897d PP |
305 | ret = configure_muxer_comp(muxer_comp, params); |
306 | if (ret) { | |
307 | goto error; | |
308 | } | |
309 | ||
958f7d11 PP |
310 | muxer_comp->muxer_notif_iters = g_ptr_array_new(); |
311 | if (!muxer_comp->muxer_notif_iters) { | |
312 | goto error; | |
313 | } | |
314 | ||
315 | muxer_comp->priv_comp = priv_comp; | |
316 | ret = bt_private_component_set_user_data(priv_comp, muxer_comp); | |
317 | assert(ret == 0); | |
147337a3 PP |
318 | status = ensure_available_input_port(priv_comp); |
319 | if (status != BT_COMPONENT_STATUS_OK) { | |
958f7d11 PP |
320 | goto error; |
321 | } | |
322 | ||
323 | ret = create_output_port(priv_comp); | |
324 | if (ret) { | |
325 | goto error; | |
326 | } | |
327 | ||
328 | goto end; | |
329 | ||
330 | error: | |
331 | destroy_muxer_comp(muxer_comp); | |
332 | ret = bt_private_component_set_user_data(priv_comp, NULL); | |
333 | assert(ret == 0); | |
147337a3 PP |
334 | |
335 | if (status == BT_COMPONENT_STATUS_OK) { | |
336 | status = BT_COMPONENT_STATUS_ERROR; | |
337 | } | |
958f7d11 PP |
338 | |
339 | end: | |
340 | return status; | |
341 | } | |
342 | ||
343 | BT_HIDDEN | |
344 | void muxer_finalize(struct bt_private_component *priv_comp) | |
345 | { | |
346 | struct muxer_comp *muxer_comp = | |
347 | bt_private_component_get_user_data(priv_comp); | |
348 | ||
349 | destroy_muxer_comp(muxer_comp); | |
350 | } | |
351 | ||
352 | static | |
353 | struct bt_notification_iterator *create_notif_iter_on_input_port( | |
354 | struct bt_private_port *priv_port, int *ret) | |
355 | { | |
356 | struct bt_port *port = bt_port_from_private_port(priv_port); | |
357 | struct bt_notification_iterator *notif_iter = NULL; | |
358 | struct bt_private_connection *priv_conn = NULL; | |
73d5c1ad | 359 | enum bt_connection_status conn_status; |
958f7d11 PP |
360 | |
361 | assert(ret); | |
362 | *ret = 0; | |
363 | assert(port); | |
364 | ||
365 | assert(bt_port_is_connected(port)); | |
366 | priv_conn = bt_private_port_get_private_connection(priv_port); | |
367 | if (!priv_conn) { | |
368 | *ret = -1; | |
369 | goto end; | |
370 | } | |
371 | ||
ab11110e PP |
372 | // TODO: Advance the iterator to >= the time of the latest |
373 | // returned notification by the muxer notification | |
374 | // iterator which creates it. | |
73d5c1ad PP |
375 | conn_status = bt_private_connection_create_notification_iterator( |
376 | priv_conn, NULL, ¬if_iter); | |
377 | if (conn_status != BT_CONNECTION_STATUS_OK) { | |
958f7d11 PP |
378 | *ret = -1; |
379 | goto end; | |
380 | } | |
381 | ||
382 | end: | |
383 | bt_put(port); | |
384 | bt_put(priv_conn); | |
385 | return notif_iter; | |
386 | } | |
387 | ||
ab11110e | 388 | static |
089717de | 389 | enum bt_notification_iterator_status muxer_upstream_notif_iter_next( |
ab11110e PP |
390 | struct muxer_upstream_notif_iter *muxer_upstream_notif_iter) |
391 | { | |
089717de | 392 | enum bt_notification_iterator_status status; |
ab11110e | 393 | |
089717de | 394 | status = bt_notification_iterator_next( |
ab11110e PP |
395 | muxer_upstream_notif_iter->notif_iter); |
396 | ||
089717de | 397 | switch (status) { |
ab11110e | 398 | case BT_NOTIFICATION_ITERATOR_STATUS_OK: |
089717de PP |
399 | /* |
400 | * Notification iterator's current notification is valid: | |
401 | * it must be considered for muxing operations. | |
402 | */ | |
403 | muxer_upstream_notif_iter->is_valid = true; | |
ab11110e PP |
404 | break; |
405 | case BT_NOTIFICATION_ITERATOR_STATUS_AGAIN: | |
089717de PP |
406 | /* |
407 | * Notification iterator's current notification is not | |
408 | * valid anymore. Return | |
409 | * BT_NOTIFICATION_ITERATOR_STATUS_AGAIN | |
410 | * immediately. | |
411 | */ | |
412 | muxer_upstream_notif_iter->is_valid = false; | |
ab11110e | 413 | break; |
beed0223 MD |
414 | case BT_NOTIFICATION_ITERATOR_STATUS_END: /* Fall-through. */ |
415 | case BT_NOTIFICATION_ITERATOR_STATUS_CANCELED: | |
ab11110e PP |
416 | /* |
417 | * Notification iterator reached the end: release it. It | |
418 | * won't be considered again to find the youngest | |
419 | * notification. | |
420 | */ | |
421 | BT_PUT(muxer_upstream_notif_iter->notif_iter); | |
089717de PP |
422 | muxer_upstream_notif_iter->is_valid = false; |
423 | status = BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
424 | break; | |
ab11110e PP |
425 | default: |
426 | /* Error or unsupported status code */ | |
089717de PP |
427 | status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; |
428 | break; | |
ab11110e PP |
429 | } |
430 | ||
089717de | 431 | return status; |
ab11110e PP |
432 | } |
433 | ||
434 | static | |
089717de | 435 | int muxer_notif_iter_handle_newly_connected_ports( |
ab11110e PP |
436 | struct muxer_notif_iter *muxer_notif_iter) |
437 | { | |
ab11110e PP |
438 | int ret = 0; |
439 | ||
ab11110e PP |
440 | /* |
441 | * Here we create one upstream notification iterator for each | |
089717de PP |
442 | * newly connected port. We do not perform an initial "next" on |
443 | * those new upstream notification iterators: they are | |
444 | * invalidated, to be validated later. The list of newly | |
445 | * connected ports to handle here is updated by | |
446 | * muxer_port_connected(). | |
ab11110e PP |
447 | */ |
448 | while (true) { | |
449 | GList *node = muxer_notif_iter->newly_connected_priv_ports; | |
450 | struct bt_private_port *priv_port; | |
451 | struct bt_port *port; | |
452 | struct bt_notification_iterator *upstream_notif_iter = NULL; | |
453 | struct muxer_upstream_notif_iter *muxer_upstream_notif_iter; | |
454 | ||
455 | if (!node) { | |
456 | break; | |
457 | } | |
458 | ||
459 | priv_port = node->data; | |
460 | port = bt_port_from_private_port(priv_port); | |
461 | assert(port); | |
462 | ||
463 | if (!bt_port_is_connected(port)) { | |
464 | /* | |
465 | * Looks like this port is not connected | |
466 | * anymore: we can't create an upstream | |
089717de PP |
467 | * notification iterator on its (non-existing) |
468 | * connection in this case. | |
ab11110e PP |
469 | */ |
470 | goto remove_node; | |
471 | } | |
472 | ||
473 | BT_PUT(port); | |
474 | upstream_notif_iter = create_notif_iter_on_input_port(priv_port, | |
475 | &ret); | |
476 | if (ret) { | |
477 | assert(!upstream_notif_iter); | |
ab11110e PP |
478 | goto error; |
479 | } | |
480 | ||
481 | muxer_upstream_notif_iter = | |
482 | muxer_notif_iter_add_upstream_notif_iter( | |
483 | muxer_notif_iter, upstream_notif_iter, | |
484 | priv_port); | |
ab11110e PP |
485 | BT_PUT(upstream_notif_iter); |
486 | if (!muxer_upstream_notif_iter) { | |
487 | goto error; | |
488 | } | |
489 | ||
ab11110e PP |
490 | remove_node: |
491 | bt_put(upstream_notif_iter); | |
492 | bt_put(port); | |
ab11110e PP |
493 | muxer_notif_iter->newly_connected_priv_ports = |
494 | g_list_delete_link( | |
495 | muxer_notif_iter->newly_connected_priv_ports, | |
496 | node); | |
497 | } | |
498 | ||
499 | goto end; | |
500 | ||
501 | error: | |
089717de | 502 | if (ret >= 0) { |
ab11110e PP |
503 | ret = -1; |
504 | } | |
505 | ||
506 | end: | |
ab11110e PP |
507 | return ret; |
508 | } | |
509 | ||
958f7d11 PP |
510 | static |
511 | int get_notif_ts_ns(struct muxer_comp *muxer_comp, | |
282c8cd0 | 512 | struct muxer_notif_iter *muxer_notif_iter, |
958f7d11 PP |
513 | struct bt_notification *notif, int64_t last_returned_ts_ns, |
514 | int64_t *ts_ns) | |
515 | { | |
516 | struct bt_clock_class_priority_map *cc_prio_map = NULL; | |
517 | struct bt_ctf_clock_class *clock_class = NULL; | |
518 | struct bt_ctf_clock_value *clock_value = NULL; | |
519 | struct bt_ctf_event *event = NULL; | |
520 | int ret = 0; | |
282c8cd0 | 521 | const unsigned char *cc_uuid; |
958f7d11 PP |
522 | |
523 | assert(notif); | |
524 | assert(ts_ns); | |
525 | ||
526 | switch (bt_notification_get_type(notif)) { | |
527 | case BT_NOTIFICATION_TYPE_EVENT: | |
528 | cc_prio_map = | |
529 | bt_notification_event_get_clock_class_priority_map( | |
530 | notif); | |
531 | break; | |
532 | ||
533 | case BT_NOTIFICATION_TYPE_INACTIVITY: | |
534 | cc_prio_map = | |
a09c6b95 | 535 | bt_notification_inactivity_get_clock_class_priority_map( |
958f7d11 PP |
536 | notif); |
537 | break; | |
538 | default: | |
089717de | 539 | /* All the other notifications have a higher priority */ |
958f7d11 PP |
540 | *ts_ns = last_returned_ts_ns; |
541 | goto end; | |
542 | } | |
543 | ||
544 | if (!cc_prio_map) { | |
545 | goto error; | |
546 | } | |
547 | ||
548 | /* | |
549 | * If the clock class priority map is empty, then we consider | |
550 | * that this notification has no time. In this case it's always | |
551 | * the youngest. | |
552 | */ | |
553 | if (bt_clock_class_priority_map_get_clock_class_count(cc_prio_map) == 0) { | |
554 | *ts_ns = last_returned_ts_ns; | |
555 | goto end; | |
556 | } | |
557 | ||
558 | clock_class = | |
559 | bt_clock_class_priority_map_get_highest_priority_clock_class( | |
560 | cc_prio_map); | |
561 | if (!clock_class) { | |
562 | goto error; | |
563 | } | |
564 | ||
282c8cd0 PP |
565 | cc_uuid = bt_ctf_clock_class_get_uuid(clock_class); |
566 | ||
567 | if (muxer_notif_iter->clock_class_expectation == | |
568 | MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_ANY) { | |
569 | /* | |
570 | * This is the first clock class that this muxer | |
571 | * notification iterator encounters. Its properties | |
572 | * determine what to expect for the whole lifetime of | |
573 | * the iterator without a true | |
574 | * `assume-absolute-clock-classes` parameter. | |
575 | */ | |
576 | if (bt_ctf_clock_class_is_absolute(clock_class)) { | |
577 | /* Expect absolute clock classes */ | |
578 | muxer_notif_iter->clock_class_expectation = | |
579 | MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_ABSOLUTE; | |
580 | } else { | |
581 | if (cc_uuid) { | |
582 | /* | |
583 | * Expect non-absolute clock classes | |
584 | * with a specific UUID. | |
585 | */ | |
586 | muxer_notif_iter->clock_class_expectation = | |
587 | MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_SPEC_UUID; | |
588 | memcpy(muxer_notif_iter->expected_clock_class_uuid, | |
589 | cc_uuid, BABELTRACE_UUID_LEN); | |
590 | } else { | |
591 | /* | |
592 | * Expect non-absolute clock classes | |
593 | * with no UUID. | |
594 | */ | |
595 | muxer_notif_iter->clock_class_expectation = | |
596 | MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_NO_UUID; | |
597 | } | |
598 | } | |
599 | } | |
600 | ||
601 | if (!muxer_comp->assume_absolute_clock_classes) { | |
602 | switch (muxer_notif_iter->clock_class_expectation) { | |
603 | case MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_ABSOLUTE: | |
604 | if (!bt_ctf_clock_class_is_absolute(clock_class)) { | |
605 | goto error; | |
606 | } | |
607 | break; | |
608 | case MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_NO_UUID: | |
609 | if (bt_ctf_clock_class_is_absolute(clock_class)) { | |
610 | goto error; | |
611 | } | |
612 | ||
613 | if (cc_uuid) { | |
614 | goto error; | |
615 | } | |
616 | break; | |
617 | case MUXER_NOTIF_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_SPEC_UUID: | |
618 | if (bt_ctf_clock_class_is_absolute(clock_class)) { | |
619 | goto error; | |
620 | } | |
621 | ||
622 | if (!cc_uuid) { | |
623 | goto error; | |
624 | } | |
625 | ||
626 | if (memcmp(muxer_notif_iter->expected_clock_class_uuid, | |
627 | cc_uuid, BABELTRACE_UUID_LEN) != 0) { | |
628 | goto error; | |
629 | } | |
630 | break; | |
631 | default: | |
632 | /* Unexpected */ | |
633 | abort(); | |
634 | } | |
958f7d11 PP |
635 | } |
636 | ||
637 | switch (bt_notification_get_type(notif)) { | |
638 | case BT_NOTIFICATION_TYPE_EVENT: | |
639 | event = bt_notification_event_get_event(notif); | |
ab11110e | 640 | assert(event); |
958f7d11 PP |
641 | clock_value = bt_ctf_event_get_clock_value(event, |
642 | clock_class); | |
643 | break; | |
644 | case BT_NOTIFICATION_TYPE_INACTIVITY: | |
645 | clock_value = bt_notification_inactivity_get_clock_value( | |
646 | notif, clock_class); | |
647 | break; | |
648 | default: | |
0fbb9a9f | 649 | abort(); |
958f7d11 PP |
650 | } |
651 | ||
652 | if (!clock_value) { | |
653 | goto error; | |
654 | } | |
655 | ||
656 | ret = bt_ctf_clock_value_get_value_ns_from_epoch(clock_value, ts_ns); | |
657 | if (ret) { | |
658 | goto error; | |
659 | } | |
660 | ||
661 | goto end; | |
662 | ||
663 | error: | |
664 | ret = -1; | |
665 | ||
666 | end: | |
667 | bt_put(cc_prio_map); | |
668 | bt_put(event); | |
669 | bt_put(clock_class); | |
670 | bt_put(clock_value); | |
671 | return ret; | |
672 | } | |
673 | ||
ab11110e PP |
674 | /* |
675 | * This function finds the youngest available notification amongst the | |
676 | * non-ended upstream notification iterators and returns the upstream | |
677 | * notification iterator which has it, or | |
678 | * BT_NOTIFICATION_ITERATOR_STATUS_END if there's no available | |
679 | * notification. | |
680 | * | |
681 | * This function does NOT: | |
682 | * | |
683 | * * Update any upstream notification iterator. | |
684 | * * Check for newly connected ports. | |
685 | * * Check the upstream notification iterators to retry. | |
686 | * | |
687 | * On sucess, this function sets *muxer_upstream_notif_iter to the | |
688 | * upstream notification iterator of which the current notification is | |
689 | * the youngest, and sets *ts_ns to its time. | |
690 | */ | |
958f7d11 PP |
691 | static |
692 | enum bt_notification_iterator_status | |
693 | muxer_notif_iter_youngest_upstream_notif_iter( | |
694 | struct muxer_comp *muxer_comp, | |
695 | struct muxer_notif_iter *muxer_notif_iter, | |
696 | struct muxer_upstream_notif_iter **muxer_upstream_notif_iter, | |
697 | int64_t *ts_ns) | |
698 | { | |
699 | size_t i; | |
700 | int ret; | |
701 | int64_t youngest_ts_ns = INT64_MAX; | |
702 | enum bt_notification_iterator_status status = | |
703 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
704 | ||
705 | assert(muxer_comp); | |
706 | assert(muxer_notif_iter); | |
707 | assert(muxer_upstream_notif_iter); | |
708 | *muxer_upstream_notif_iter = NULL; | |
709 | ||
710 | for (i = 0; i < muxer_notif_iter->muxer_upstream_notif_iters->len; i++) { | |
711 | struct bt_notification *notif; | |
712 | struct muxer_upstream_notif_iter *cur_muxer_upstream_notif_iter = | |
713 | g_ptr_array_index(muxer_notif_iter->muxer_upstream_notif_iters, i); | |
714 | int64_t notif_ts_ns; | |
715 | ||
716 | if (!cur_muxer_upstream_notif_iter->notif_iter) { | |
ab11110e | 717 | /* This upstream notification iterator is ended */ |
958f7d11 PP |
718 | continue; |
719 | } | |
720 | ||
089717de | 721 | assert(cur_muxer_upstream_notif_iter->is_valid); |
958f7d11 PP |
722 | notif = bt_notification_iterator_get_notification( |
723 | cur_muxer_upstream_notif_iter->notif_iter); | |
724 | assert(notif); | |
282c8cd0 | 725 | ret = get_notif_ts_ns(muxer_comp, muxer_notif_iter, notif, |
958f7d11 PP |
726 | muxer_notif_iter->last_returned_ts_ns, ¬if_ts_ns); |
727 | bt_put(notif); | |
728 | if (ret) { | |
729 | *muxer_upstream_notif_iter = NULL; | |
730 | status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
731 | goto end; | |
732 | } | |
733 | ||
734 | if (notif_ts_ns <= youngest_ts_ns) { | |
735 | *muxer_upstream_notif_iter = | |
736 | cur_muxer_upstream_notif_iter; | |
737 | youngest_ts_ns = notif_ts_ns; | |
738 | *ts_ns = youngest_ts_ns; | |
739 | } | |
740 | } | |
741 | ||
742 | if (!*muxer_upstream_notif_iter) { | |
743 | status = BT_NOTIFICATION_ITERATOR_STATUS_END; | |
744 | *ts_ns = INT64_MIN; | |
745 | } | |
746 | ||
747 | end: | |
748 | return status; | |
749 | } | |
750 | ||
751 | static | |
089717de PP |
752 | enum bt_notification_iterator_status validate_muxer_upstream_notif_iter( |
753 | struct muxer_upstream_notif_iter *muxer_upstream_notif_iter) | |
958f7d11 | 754 | { |
089717de PP |
755 | enum bt_notification_iterator_status status = |
756 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
958f7d11 | 757 | |
089717de PP |
758 | if (muxer_upstream_notif_iter->is_valid || |
759 | !muxer_upstream_notif_iter->notif_iter) { | |
ab11110e PP |
760 | goto end; |
761 | } | |
762 | ||
089717de PP |
763 | status = muxer_upstream_notif_iter_next(muxer_upstream_notif_iter); |
764 | ||
765 | end: | |
766 | return status; | |
767 | } | |
768 | ||
769 | static | |
770 | enum bt_notification_iterator_status validate_muxer_upstream_notif_iters( | |
771 | struct muxer_notif_iter *muxer_notif_iter) | |
772 | { | |
773 | enum bt_notification_iterator_status status = | |
774 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
775 | size_t i; | |
776 | ||
777 | for (i = 0; i < muxer_notif_iter->muxer_upstream_notif_iters->len; i++) { | |
778 | struct muxer_upstream_notif_iter *muxer_upstream_notif_iter = | |
779 | g_ptr_array_index( | |
780 | muxer_notif_iter->muxer_upstream_notif_iters, | |
781 | i); | |
782 | ||
783 | status = validate_muxer_upstream_notif_iter( | |
784 | muxer_upstream_notif_iter); | |
785 | if (status != BT_NOTIFICATION_ITERATOR_STATUS_OK) { | |
786 | goto end; | |
787 | } | |
744ba28b PP |
788 | |
789 | /* | |
790 | * Remove this muxer upstream notification iterator | |
791 | * if it's ended or canceled. | |
792 | */ | |
793 | if (!muxer_upstream_notif_iter->notif_iter) { | |
794 | /* | |
795 | * Use g_ptr_array_remove_fast() because the | |
796 | * order of those elements is not important. | |
797 | */ | |
798 | g_ptr_array_remove_index_fast( | |
799 | muxer_notif_iter->muxer_upstream_notif_iters, | |
800 | i); | |
801 | i--; | |
802 | } | |
089717de PP |
803 | } |
804 | ||
805 | end: | |
806 | return status; | |
807 | } | |
808 | ||
809 | static | |
810 | struct bt_notification_iterator_next_return muxer_notif_iter_do_next( | |
811 | struct muxer_comp *muxer_comp, | |
812 | struct muxer_notif_iter *muxer_notif_iter) | |
813 | { | |
814 | struct muxer_upstream_notif_iter *muxer_upstream_notif_iter = NULL; | |
815 | struct bt_notification_iterator_next_return next_return = { | |
816 | .notification = NULL, | |
817 | .status = BT_NOTIFICATION_ITERATOR_STATUS_OK, | |
818 | }; | |
819 | int64_t next_return_ts; | |
820 | ||
821 | while (true) { | |
822 | int ret = muxer_notif_iter_handle_newly_connected_ports( | |
823 | muxer_notif_iter); | |
824 | ||
825 | if (ret) { | |
826 | next_return.status = | |
827 | BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
828 | goto end; | |
829 | } | |
830 | ||
831 | next_return.status = | |
832 | validate_muxer_upstream_notif_iters(muxer_notif_iter); | |
833 | if (next_return.status != BT_NOTIFICATION_ITERATOR_STATUS_OK) { | |
834 | goto end; | |
835 | } | |
ab11110e | 836 | |
958f7d11 | 837 | /* |
089717de PP |
838 | * At this point, we know that all the existing upstream |
839 | * notification iterators are valid. However the | |
840 | * operations to validate them (during | |
841 | * validate_muxer_upstream_notif_iters()) may have | |
842 | * connected new ports. If no ports were connected | |
843 | * during this operation, exit the loop. | |
958f7d11 | 844 | */ |
089717de PP |
845 | if (!muxer_notif_iter->newly_connected_priv_ports) { |
846 | break; | |
847 | } | |
958f7d11 PP |
848 | } |
849 | ||
089717de PP |
850 | assert(!muxer_notif_iter->newly_connected_priv_ports); |
851 | ||
958f7d11 | 852 | /* |
089717de PP |
853 | * At this point we know that all the existing upstream |
854 | * notification iterators are valid. We can find the one, | |
855 | * amongst those, of which the current notification is the | |
856 | * youngest. | |
958f7d11 | 857 | */ |
089717de | 858 | next_return.status = |
958f7d11 PP |
859 | muxer_notif_iter_youngest_upstream_notif_iter(muxer_comp, |
860 | muxer_notif_iter, &muxer_upstream_notif_iter, | |
089717de PP |
861 | &next_return_ts); |
862 | if (next_return.status < 0 || | |
beed0223 MD |
863 | next_return.status == BT_NOTIFICATION_ITERATOR_STATUS_END || |
864 | next_return.status == BT_NOTIFICATION_ITERATOR_STATUS_CANCELED) { | |
958f7d11 PP |
865 | goto end; |
866 | } | |
867 | ||
089717de PP |
868 | if (next_return_ts < muxer_notif_iter->last_returned_ts_ns) { |
869 | next_return.status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
958f7d11 PP |
870 | goto end; |
871 | } | |
872 | ||
089717de PP |
873 | assert(next_return.status == BT_NOTIFICATION_ITERATOR_STATUS_OK); |
874 | assert(muxer_upstream_notif_iter); | |
875 | next_return.notification = bt_notification_iterator_get_notification( | |
876 | muxer_upstream_notif_iter->notif_iter); | |
877 | assert(next_return.notification); | |
958f7d11 PP |
878 | |
879 | /* | |
089717de PP |
880 | * We invalidate the upstream notification iterator so that, the |
881 | * next time this function is called, | |
882 | * validate_muxer_upstream_notif_iters() will make it valid. | |
958f7d11 | 883 | */ |
089717de PP |
884 | muxer_upstream_notif_iter->is_valid = false; |
885 | muxer_notif_iter->last_returned_ts_ns = next_return_ts; | |
958f7d11 PP |
886 | |
887 | end: | |
089717de | 888 | return next_return; |
958f7d11 PP |
889 | } |
890 | ||
891 | static | |
ab11110e PP |
892 | void destroy_muxer_notif_iter(struct muxer_notif_iter *muxer_notif_iter) |
893 | { | |
ab11110e PP |
894 | if (!muxer_notif_iter) { |
895 | return; | |
896 | } | |
897 | ||
898 | if (muxer_notif_iter->muxer_upstream_notif_iters) { | |
899 | g_ptr_array_free( | |
900 | muxer_notif_iter->muxer_upstream_notif_iters, TRUE); | |
901 | } | |
902 | ||
ab11110e PP |
903 | g_list_free(muxer_notif_iter->newly_connected_priv_ports); |
904 | g_free(muxer_notif_iter); | |
905 | } | |
906 | ||
907 | static | |
908 | int muxer_notif_iter_init_newly_connected_ports(struct muxer_comp *muxer_comp, | |
958f7d11 PP |
909 | struct muxer_notif_iter *muxer_notif_iter) |
910 | { | |
ab11110e | 911 | struct bt_component *comp; |
544d0515 PP |
912 | int64_t count; |
913 | int64_t i; | |
ab11110e | 914 | int ret = 0; |
958f7d11 | 915 | |
ab11110e PP |
916 | /* |
917 | * Add the connected input ports to this muxer notification | |
918 | * iterator's list of newly connected ports. They will be | |
919 | * handled by muxer_notif_iter_handle_newly_connected_ports(). | |
920 | */ | |
958f7d11 PP |
921 | comp = bt_component_from_private_component(muxer_comp->priv_comp); |
922 | assert(comp); | |
544d0515 PP |
923 | count = bt_component_filter_get_input_port_count(comp); |
924 | if (count < 0) { | |
ab11110e PP |
925 | goto end; |
926 | } | |
958f7d11 PP |
927 | |
928 | for (i = 0; i < count; i++) { | |
929 | struct bt_private_port *priv_port = | |
9ac68eb1 | 930 | bt_private_component_filter_get_input_private_port_by_index( |
958f7d11 PP |
931 | muxer_comp->priv_comp, i); |
932 | struct bt_port *port; | |
958f7d11 PP |
933 | |
934 | assert(priv_port); | |
958f7d11 | 935 | port = bt_port_from_private_port(priv_port); |
ab11110e | 936 | assert(port); |
958f7d11 PP |
937 | |
938 | if (!bt_port_is_connected(port)) { | |
958f7d11 | 939 | bt_put(priv_port); |
ab11110e | 940 | bt_put(port); |
958f7d11 PP |
941 | continue; |
942 | } | |
943 | ||
944 | bt_put(port); | |
06a2cb0d | 945 | bt_put(priv_port); |
ab11110e PP |
946 | muxer_notif_iter->newly_connected_priv_ports = |
947 | g_list_append( | |
948 | muxer_notif_iter->newly_connected_priv_ports, | |
958f7d11 | 949 | priv_port); |
ab11110e | 950 | if (!muxer_notif_iter->newly_connected_priv_ports) { |
ab11110e PP |
951 | ret = -1; |
952 | goto end; | |
958f7d11 | 953 | } |
958f7d11 PP |
954 | } |
955 | ||
956 | end: | |
957 | bt_put(comp); | |
958 | return ret; | |
959 | } | |
960 | ||
958f7d11 PP |
961 | BT_HIDDEN |
962 | enum bt_notification_iterator_status muxer_notif_iter_init( | |
963 | struct bt_private_notification_iterator *priv_notif_iter, | |
964 | struct bt_private_port *output_priv_port) | |
965 | { | |
966 | struct muxer_comp *muxer_comp = NULL; | |
967 | struct muxer_notif_iter *muxer_notif_iter = NULL; | |
968 | struct bt_private_component *priv_comp = NULL; | |
969 | enum bt_notification_iterator_status status = | |
970 | BT_NOTIFICATION_ITERATOR_STATUS_OK; | |
971 | int ret; | |
972 | ||
973 | priv_comp = bt_private_notification_iterator_get_private_component( | |
974 | priv_notif_iter); | |
975 | assert(priv_comp); | |
976 | muxer_comp = bt_private_component_get_user_data(priv_comp); | |
977 | assert(muxer_comp); | |
a09c6b95 PP |
978 | |
979 | if (muxer_comp->initializing_muxer_notif_iter) { | |
980 | /* | |
089717de PP |
981 | * Weird, unhandled situation detected: downstream |
982 | * creates a muxer notification iterator while creating | |
983 | * another muxer notification iterator (same component). | |
a09c6b95 | 984 | */ |
958f7d11 PP |
985 | goto error; |
986 | } | |
987 | ||
a09c6b95 PP |
988 | muxer_comp->initializing_muxer_notif_iter = true; |
989 | muxer_notif_iter = g_new0(struct muxer_notif_iter, 1); | |
990 | if (!muxer_notif_iter) { | |
ab11110e PP |
991 | goto error; |
992 | } | |
993 | ||
958f7d11 PP |
994 | muxer_notif_iter->last_returned_ts_ns = INT64_MIN; |
995 | muxer_notif_iter->muxer_upstream_notif_iters = | |
996 | g_ptr_array_new_with_free_func( | |
997 | (GDestroyNotify) destroy_muxer_upstream_notif_iter); | |
998 | if (!muxer_notif_iter->muxer_upstream_notif_iters) { | |
999 | goto error; | |
1000 | } | |
1001 | ||
a09c6b95 PP |
1002 | /* |
1003 | * Add the muxer notification iterator to the component's array | |
1004 | * of muxer notification iterators here because | |
1005 | * muxer_notif_iter_init_newly_connected_ports() can cause | |
1006 | * muxer_port_connected() to be called, which adds the newly | |
1007 | * connected port to each muxer notification iterator's list of | |
1008 | * newly connected ports. | |
1009 | */ | |
1010 | g_ptr_array_add(muxer_comp->muxer_notif_iters, muxer_notif_iter); | |
1011 | ret = muxer_notif_iter_init_newly_connected_ports(muxer_comp, | |
1012 | muxer_notif_iter); | |
1013 | if (ret) { | |
1014 | goto error; | |
1015 | } | |
1016 | ||
958f7d11 PP |
1017 | ret = bt_private_notification_iterator_set_user_data(priv_notif_iter, |
1018 | muxer_notif_iter); | |
1019 | assert(ret == 0); | |
958f7d11 PP |
1020 | goto end; |
1021 | ||
1022 | error: | |
a09c6b95 PP |
1023 | if (g_ptr_array_index(muxer_comp->muxer_notif_iters, |
1024 | muxer_comp->muxer_notif_iters->len - 1) == muxer_notif_iter) { | |
1025 | g_ptr_array_remove_index(muxer_comp->muxer_notif_iters, | |
1026 | muxer_comp->muxer_notif_iters->len - 1); | |
1027 | } | |
1028 | ||
958f7d11 PP |
1029 | destroy_muxer_notif_iter(muxer_notif_iter); |
1030 | ret = bt_private_notification_iterator_set_user_data(priv_notif_iter, | |
1031 | NULL); | |
1032 | assert(ret == 0); | |
1033 | status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
1034 | ||
1035 | end: | |
a09c6b95 | 1036 | muxer_comp->initializing_muxer_notif_iter = false; |
958f7d11 PP |
1037 | bt_put(priv_comp); |
1038 | return status; | |
1039 | } | |
1040 | ||
1041 | BT_HIDDEN | |
1042 | void muxer_notif_iter_finalize( | |
1043 | struct bt_private_notification_iterator *priv_notif_iter) | |
1044 | { | |
1045 | struct muxer_notif_iter *muxer_notif_iter = | |
1046 | bt_private_notification_iterator_get_user_data(priv_notif_iter); | |
1047 | struct bt_private_component *priv_comp = NULL; | |
1048 | struct muxer_comp *muxer_comp = NULL; | |
1049 | ||
1050 | priv_comp = bt_private_notification_iterator_get_private_component( | |
1051 | priv_notif_iter); | |
1052 | assert(priv_comp); | |
1053 | muxer_comp = bt_private_component_get_user_data(priv_comp); | |
1054 | ||
1055 | if (muxer_comp) { | |
1056 | (void) g_ptr_array_remove_fast(muxer_comp->muxer_notif_iters, | |
1057 | muxer_notif_iter); | |
1058 | destroy_muxer_notif_iter(muxer_notif_iter); | |
1059 | } | |
1060 | ||
1061 | bt_put(priv_comp); | |
1062 | } | |
1063 | ||
1064 | BT_HIDDEN | |
1065 | struct bt_notification_iterator_next_return muxer_notif_iter_next( | |
1066 | struct bt_private_notification_iterator *priv_notif_iter) | |
1067 | { | |
089717de | 1068 | struct bt_notification_iterator_next_return next_ret; |
958f7d11 PP |
1069 | struct muxer_notif_iter *muxer_notif_iter = |
1070 | bt_private_notification_iterator_get_user_data(priv_notif_iter); | |
1071 | struct bt_private_component *priv_comp = NULL; | |
1072 | struct muxer_comp *muxer_comp = NULL; | |
958f7d11 PP |
1073 | |
1074 | assert(muxer_notif_iter); | |
1075 | priv_comp = bt_private_notification_iterator_get_private_component( | |
1076 | priv_notif_iter); | |
1077 | assert(priv_comp); | |
1078 | muxer_comp = bt_private_component_get_user_data(priv_comp); | |
1079 | assert(muxer_comp); | |
1080 | ||
1081 | /* Are we in an error state set elsewhere? */ | |
1082 | if (unlikely(muxer_comp->error)) { | |
089717de PP |
1083 | next_ret.notification = NULL; |
1084 | next_ret.status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; | |
1085 | goto end; | |
958f7d11 PP |
1086 | } |
1087 | ||
089717de | 1088 | next_ret = muxer_notif_iter_do_next(muxer_comp, muxer_notif_iter); |
958f7d11 PP |
1089 | |
1090 | end: | |
1091 | bt_put(priv_comp); | |
1092 | return next_ret; | |
1093 | } | |
1094 | ||
1095 | BT_HIDDEN | |
1096 | void muxer_port_connected( | |
1097 | struct bt_private_component *priv_comp, | |
1098 | struct bt_private_port *self_private_port, | |
1099 | struct bt_port *other_port) | |
1100 | { | |
1101 | struct bt_port *self_port = | |
1102 | bt_port_from_private_port(self_private_port); | |
1103 | struct muxer_comp *muxer_comp = | |
1104 | bt_private_component_get_user_data(priv_comp); | |
1105 | size_t i; | |
06a2cb0d | 1106 | int ret; |
958f7d11 PP |
1107 | |
1108 | assert(self_port); | |
1109 | assert(muxer_comp); | |
1110 | ||
06a2cb0d PP |
1111 | if (bt_port_get_type(self_port) == BT_PORT_TYPE_OUTPUT) { |
1112 | goto end; | |
958f7d11 PP |
1113 | } |
1114 | ||
1115 | for (i = 0; i < muxer_comp->muxer_notif_iters->len; i++) { | |
1116 | struct muxer_notif_iter *muxer_notif_iter = | |
1117 | g_ptr_array_index(muxer_comp->muxer_notif_iters, i); | |
1118 | ||
1119 | /* | |
ab11110e PP |
1120 | * Add this port to the list of newly connected ports |
1121 | * for this muxer notification iterator. We append at | |
1122 | * the end of this list while | |
1123 | * muxer_notif_iter_handle_newly_connected_ports() | |
1124 | * removes the nodes from the beginning. | |
1125 | * | |
1126 | * The list node owns the private port. | |
958f7d11 | 1127 | */ |
ab11110e PP |
1128 | muxer_notif_iter->newly_connected_priv_ports = |
1129 | g_list_append( | |
1130 | muxer_notif_iter->newly_connected_priv_ports, | |
06a2cb0d | 1131 | self_private_port); |
ab11110e | 1132 | if (!muxer_notif_iter->newly_connected_priv_ports) { |
089717de | 1133 | /* Put reference taken by bt_get() above */ |
958f7d11 PP |
1134 | muxer_comp->error = true; |
1135 | goto end; | |
1136 | } | |
1137 | } | |
1138 | ||
06a2cb0d PP |
1139 | /* One less available input port */ |
1140 | muxer_comp->available_input_ports--; | |
1141 | ret = ensure_available_input_port(priv_comp); | |
1142 | if (ret) { | |
1143 | /* | |
1144 | * Only way to report an error later since this | |
1145 | * method does not return anything. | |
1146 | */ | |
1147 | muxer_comp->error = true; | |
1148 | goto end; | |
1149 | } | |
1150 | ||
958f7d11 PP |
1151 | end: |
1152 | bt_put(self_port); | |
1153 | } | |
1154 | ||
1155 | BT_HIDDEN | |
1156 | void muxer_port_disconnected(struct bt_private_component *priv_comp, | |
1157 | struct bt_private_port *priv_port) | |
1158 | { | |
1159 | struct bt_port *port = bt_port_from_private_port(priv_port); | |
1160 | struct muxer_comp *muxer_comp = | |
1161 | bt_private_component_get_user_data(priv_comp); | |
1162 | ||
1163 | assert(port); | |
1164 | assert(muxer_comp); | |
1165 | ||
ab11110e PP |
1166 | /* |
1167 | * There's nothing special to do when a port is disconnected | |
1168 | * because this component deals with upstream notification | |
1169 | * iterators which were already created thanks to connected | |
1170 | * ports. The fact that the port is disconnected does not cancel | |
1171 | * the upstream notification iterators created using its | |
089717de PP |
1172 | * connection: they still exist, even if the connection is dead. |
1173 | * The only way to remove an upstream notification iterator is | |
1174 | * for its "next" operation to return | |
1175 | * BT_NOTIFICATION_ITERATOR_STATUS_END. | |
ab11110e | 1176 | */ |
958f7d11 PP |
1177 | if (bt_port_get_type(port) == BT_PORT_TYPE_INPUT) { |
1178 | /* One more available input port */ | |
1179 | muxer_comp->available_input_ports++; | |
1180 | } | |
1181 | ||
1182 | bt_put(port); | |
1183 | } |