lib: remove `BT_GRAPH_RUN_STATUS_END`
[babeltrace.git] / src / lib / graph / iterator.c
CommitLineData
47e5a032 1/*
e2f7325d 2 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
47e5a032 3 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
47e5a032
JG
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
350ad6c1 24#define BT_LOG_TAG "LIB/MSG-ITER"
c2d9d9cf 25#include "lib/logging.h"
5af447e5 26
578e048b 27#include "compat/compiler.h"
e74dbb33 28#include "compat/glib.h"
578e048b
MJ
29#include "lib/trace-ir/clock-class.h"
30#include "lib/trace-ir/clock-snapshot.h"
3fadfbc0
MJ
31#include <babeltrace2/trace-ir/field.h>
32#include <babeltrace2/trace-ir/event-const.h>
578e048b 33#include "lib/trace-ir/event.h"
3fadfbc0 34#include <babeltrace2/trace-ir/packet-const.h>
578e048b
MJ
35#include "lib/trace-ir/packet.h"
36#include "lib/trace-ir/stream.h"
d24d5663
PP
37#include <babeltrace2/trace-ir/clock-class-const.h>
38#include <babeltrace2/trace-ir/stream-class-const.h>
39#include <babeltrace2/trace-ir/stream-const.h>
3fadfbc0 40#include <babeltrace2/graph/connection-const.h>
3fadfbc0 41#include <babeltrace2/graph/component-const.h>
3fadfbc0 42#include <babeltrace2/graph/component-sink-const.h>
3fadfbc0 43#include <babeltrace2/graph/message-const.h>
d24d5663 44#include <babeltrace2/graph/message-iterator.h>
3fadfbc0 45#include <babeltrace2/graph/self-component-port-input-message-iterator.h>
3fadfbc0 46#include <babeltrace2/graph/message-event-const.h>
5b7b55be
SM
47#include <babeltrace2/graph/message-message-iterator-inactivity-const.h>
48#include <babeltrace2/graph/message-packet-beginning.h>
3fadfbc0
MJ
49#include <babeltrace2/graph/message-packet-beginning-const.h>
50#include <babeltrace2/graph/message-packet-end-const.h>
5b7b55be 51#include <babeltrace2/graph/message-stream-beginning.h>
3fadfbc0
MJ
52#include <babeltrace2/graph/message-stream-beginning-const.h>
53#include <babeltrace2/graph/message-stream-end-const.h>
3fadfbc0
MJ
54#include <babeltrace2/graph/port-const.h>
55#include <babeltrace2/graph/graph.h>
56#include <babeltrace2/graph/graph-const.h>
3fadfbc0 57#include <babeltrace2/types.h>
578e048b
MJ
58#include "common/assert.h"
59#include "lib/assert-pre.h"
f6f301d7 60#include "lib/assert-post.h"
fa054faf 61#include <stdint.h>
2ec84d26 62#include <inttypes.h>
0fbb9a9f 63#include <stdlib.h>
3230ee6b 64
578e048b 65#include "component-class.h"
578e048b
MJ
66#include "component.h"
67#include "component-sink.h"
68#include "component-source.h"
69#include "connection.h"
70#include "graph.h"
71#include "message/discarded-items.h"
72#include "message/event.h"
73#include "message/iterator.h"
74#include "message/message.h"
75#include "message/message-iterator-inactivity.h"
76#include "message/stream.h"
77#include "message/packet.h"
d24d5663 78#include "lib/func-status.h"
578e048b 79
d4393e08
PP
80/*
81 * TODO: Use graph's state (number of active iterators, etc.) and
82 * possibly system specifications to make a better guess than this.
83 */
d6e69534 84#define MSG_BATCH_SIZE 15
d4393e08 85
7474e7d3
PP
86#define BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(_iter) \
87 BT_ASSERT_PRE((_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE || \
88 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED || \
89 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_AGAIN || \
90 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_ERROR, \
91 "Message iterator is in the wrong state: %!+i", _iter)
47e5a032 92
d0fea130 93static inline
003e713f 94void set_self_comp_port_input_msg_iterator_state(
d0fea130
PP
95 struct bt_self_component_port_input_message_iterator *iterator,
96 enum bt_self_component_port_input_message_iterator_state state)
97{
98b15851 98 BT_ASSERT_DBG(iterator);
7474e7d3 99 BT_LIB_LOGD("Updating message iterator's state: new-state=%s",
d0fea130
PP
100 bt_self_component_port_input_message_iterator_state_string(state));
101 iterator->state = state;
102}
103
47e5a032 104static
d6e69534 105void bt_self_component_port_input_message_iterator_destroy(struct bt_object *obj)
47e5a032 106{
d6e69534 107 struct bt_self_component_port_input_message_iterator *iterator;
8738a040 108
f6ccaed9 109 BT_ASSERT(obj);
d3eb6e8f 110
bd14d768 111 /*
d6e69534 112 * The message iterator's reference count is 0 if we're
bd14d768
PP
113 * here. Increment it to avoid a double-destroy (possibly
114 * infinitely recursive). This could happen for example if the
d6e69534 115 * message iterator's finalization function does
d94d92ac
PP
116 * bt_object_get_ref() (or anything that causes
117 * bt_object_get_ref() to be called) on itself (ref. count goes
118 * from 0 to 1), and then bt_object_put_ref(): the reference
119 * count would go from 1 to 0 again and this function would be
120 * called again.
bd14d768 121 */
3fea54f6 122 obj->ref_count++;
07245ac2 123 iterator = (void *) obj;
3f7d4d90 124 BT_LIB_LOGI("Destroying self component input port message iterator object: "
d94d92ac 125 "%!+i", iterator);
d0fea130 126 bt_self_component_port_input_message_iterator_try_finalize(iterator);
d3eb6e8f 127
bd14d768
PP
128 if (iterator->connection) {
129 /*
130 * Remove ourself from the originating connection so
131 * that it does not try to finalize a dangling pointer
132 * later.
133 */
134 bt_connection_remove_iterator(iterator->connection, iterator);
d94d92ac 135 iterator->connection = NULL;
bd14d768
PP
136 }
137
da9c4c52
SM
138 if (iterator->auto_seek.msgs) {
139 while (!g_queue_is_empty(iterator->auto_seek.msgs)) {
6871026b 140 bt_object_put_ref_no_null_check(
da9c4c52 141 g_queue_pop_tail(iterator->auto_seek.msgs));
7474e7d3
PP
142 }
143
da9c4c52
SM
144 g_queue_free(iterator->auto_seek.msgs);
145 iterator->auto_seek.msgs = NULL;
7474e7d3
PP
146 }
147
ca02df0a
PP
148 if (iterator->upstream_msg_iters) {
149 /*
150 * At this point the message iterator is finalized, so
151 * it's detached from any upstream message iterator.
152 */
153 BT_ASSERT(iterator->upstream_msg_iters->len == 0);
154 g_ptr_array_free(iterator->upstream_msg_iters, TRUE);
155 iterator->upstream_msg_iters = NULL;
156 }
157
6c373cc9
PP
158 if (iterator->msgs) {
159 g_ptr_array_free(iterator->msgs, TRUE);
160 iterator->msgs = NULL;
161 }
162
163 g_free(iterator);
47e5a032
JG
164}
165
bd14d768 166BT_HIDDEN
d0fea130 167void bt_self_component_port_input_message_iterator_try_finalize(
d6e69534 168 struct bt_self_component_port_input_message_iterator *iterator)
bd14d768 169{
ca02df0a 170 uint64_t i;
d94d92ac
PP
171 typedef void (*method_t)(void *);
172
bd14d768 173 struct bt_component_class *comp_class = NULL;
d94d92ac 174 method_t method = NULL;
bd14d768 175
f6ccaed9 176 BT_ASSERT(iterator);
bd14d768
PP
177
178 switch (iterator->state) {
d6e69534 179 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_NON_INITIALIZED:
088d4023 180 /* Skip user finalization if user initialization failed */
d6e69534 181 BT_LIB_LOGD("Not finalizing non-initialized message iterator: "
d94d92ac 182 "%!+i", iterator);
d0fea130 183 goto end;
d6e69534 184 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED:
bd14d768 185 /* Already finalized */
d6e69534 186 BT_LIB_LOGD("Not finalizing message iterator: already finalized: "
d94d92ac 187 "%!+i", iterator);
d0fea130
PP
188 goto end;
189 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZING:
870631a2 190 /* Finalizing */
d0fea130
PP
191 BT_LIB_LOGF("Message iterator is already being finalized: "
192 "%!+i", iterator);
193 abort();
bd14d768
PP
194 default:
195 break;
196 }
197
d6e69534 198 BT_LIB_LOGD("Finalizing message iterator: %!+i", iterator);
d0fea130
PP
199 set_self_comp_port_input_msg_iterator_state(iterator,
200 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZING);
f6ccaed9 201 BT_ASSERT(iterator->upstream_component);
bd14d768
PP
202 comp_class = iterator->upstream_component->class;
203
204 /* Call user-defined destroy method */
205 switch (comp_class->type) {
206 case BT_COMPONENT_CLASS_TYPE_SOURCE:
207 {
d94d92ac
PP
208 struct bt_component_class_source *src_comp_cls =
209 (void *) comp_class;
bd14d768 210
d6e69534 211 method = (method_t) src_comp_cls->methods.msg_iter_finalize;
bd14d768
PP
212 break;
213 }
214 case BT_COMPONENT_CLASS_TYPE_FILTER:
215 {
d94d92ac
PP
216 struct bt_component_class_filter *flt_comp_cls =
217 (void *) comp_class;
bd14d768 218
d6e69534 219 method = (method_t) flt_comp_cls->methods.msg_iter_finalize;
bd14d768
PP
220 break;
221 }
222 default:
223 /* Unreachable */
0fbb9a9f 224 abort();
bd14d768
PP
225 }
226
d94d92ac
PP
227 if (method) {
228 BT_LIB_LOGD("Calling user's finalization method: %!+i",
5af447e5 229 iterator);
d94d92ac 230 method(iterator);
bd14d768
PP
231 }
232
ca02df0a
PP
233 /* Detach upstream message iterators */
234 for (i = 0; i < iterator->upstream_msg_iters->len; i++) {
235 struct bt_self_component_port_input_message_iterator *upstream_msg_iter =
236 iterator->upstream_msg_iters->pdata[i];
237
238 upstream_msg_iter->downstream_msg_iter = NULL;
239 }
240
241 g_ptr_array_set_size(iterator->upstream_msg_iters, 0);
242
243 /* Detach downstream message iterator */
244 if (iterator->downstream_msg_iter) {
245 gboolean existed;
246
247 BT_ASSERT(iterator->downstream_msg_iter->upstream_msg_iters);
248 existed = g_ptr_array_remove_fast(
249 iterator->downstream_msg_iter->upstream_msg_iters,
250 iterator);
251 BT_ASSERT(existed);
252 }
253
bd14d768
PP
254 iterator->upstream_component = NULL;
255 iterator->upstream_port = NULL;
d0fea130
PP
256 set_self_comp_port_input_msg_iterator_state(iterator,
257 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED);
d6e69534 258 BT_LIB_LOGD("Finalized message iterator: %!+i", iterator);
d0fea130
PP
259
260end:
261 return;
bd14d768
PP
262}
263
264BT_HIDDEN
d6e69534
PP
265void bt_self_component_port_input_message_iterator_set_connection(
266 struct bt_self_component_port_input_message_iterator *iterator,
bd14d768
PP
267 struct bt_connection *connection)
268{
f6ccaed9 269 BT_ASSERT(iterator);
bd14d768 270 iterator->connection = connection;
3f7d4d90 271 BT_LIB_LOGI("Set message iterator's connection: "
d94d92ac 272 "%![iter-]+i, %![conn-]+x", iterator, connection);
bd14d768
PP
273}
274
7474e7d3 275static
f2fb1b32 276enum bt_message_iterator_can_seek_beginning_status can_seek_ns_from_origin_true(
7474e7d3 277 struct bt_self_component_port_input_message_iterator *iterator,
f2fb1b32 278 int64_t ns_from_origin, bt_bool *can_seek)
7474e7d3 279{
f2fb1b32
SM
280 *can_seek = BT_TRUE;
281
282 return BT_FUNC_STATUS_OK;
7474e7d3
PP
283}
284
285static
f2fb1b32
SM
286enum bt_message_iterator_can_seek_beginning_status can_seek_beginning_true(
287 struct bt_self_component_port_input_message_iterator *iterator,
288 bt_bool *can_seek)
7474e7d3 289{
f2fb1b32
SM
290 *can_seek = BT_TRUE;
291
292 return BT_FUNC_STATUS_OK;
7474e7d3
PP
293}
294
d94d92ac 295static
e803df70 296int create_self_component_input_port_message_iterator(
ca02df0a 297 struct bt_self_message_iterator *self_downstream_msg_iter,
e803df70
SM
298 struct bt_self_component_port_input *self_port,
299 struct bt_self_component_port_input_message_iterator **message_iterator)
47e5a032 300{
21a9f056 301 typedef enum bt_component_class_message_iterator_initialize_method_status (*init_method_t)(
8d8b141d 302 void *, void *, void *, void *);
ca02df0a 303
ca02df0a
PP
304 init_method_t init_method = NULL;
305 struct bt_self_component_port_input_message_iterator *iterator =
306 NULL;
307 struct bt_self_component_port_input_message_iterator *downstream_msg_iter =
308 (void *) self_downstream_msg_iter;
309 struct bt_port *port = (void *) self_port;
310 struct bt_port *upstream_port;
311 struct bt_component *comp;
312 struct bt_component *upstream_comp;
313 struct bt_component_class *upstream_comp_cls;
e803df70 314 int status;
47e5a032 315
e803df70 316 BT_ASSERT_PRE_NON_NULL(message_iterator, "Created message iterator");
ca02df0a
PP
317 BT_ASSERT_PRE_NON_NULL(port, "Input port");
318 comp = bt_port_borrow_component_inline(port);
319 BT_ASSERT_PRE(bt_port_is_connected(port),
320 "Input port is not connected: %![port-]+p", port);
321 BT_ASSERT_PRE(comp, "Input port is not part of a component: %![port-]+p",
322 port);
ca02df0a
PP
323 BT_ASSERT(port->connection);
324 upstream_port = port->connection->upstream_port;
f6ccaed9 325 BT_ASSERT(upstream_port);
ca02df0a
PP
326 upstream_comp = bt_port_borrow_component_inline(upstream_port);
327 BT_ASSERT(upstream_comp);
328 BT_ASSERT_PRE(
9b4f9b42
PP
329 bt_component_borrow_graph(upstream_comp)->config_state ==
330 BT_GRAPH_CONFIGURATION_STATE_PARTIALLY_CONFIGURED ||
331 bt_component_borrow_graph(upstream_comp)->config_state ==
332 BT_GRAPH_CONFIGURATION_STATE_CONFIGURED,
ca02df0a
PP
333 "Graph is not configured: %!+g",
334 bt_component_borrow_graph(upstream_comp));
335 upstream_comp_cls = upstream_comp->class;
336 BT_ASSERT(upstream_comp->class->type ==
d94d92ac 337 BT_COMPONENT_CLASS_TYPE_SOURCE ||
ca02df0a 338 upstream_comp->class->type ==
d94d92ac 339 BT_COMPONENT_CLASS_TYPE_FILTER);
ca02df0a
PP
340 BT_LIB_LOGI("Creating message iterator on self component input port: "
341 "%![up-comp-]+c, %![up-port-]+p", upstream_comp, upstream_port);
d94d92ac 342 iterator = g_new0(
d6e69534 343 struct bt_self_component_port_input_message_iterator, 1);
47e5a032 344 if (!iterator) {
870631a2
PP
345 BT_LIB_LOGE_APPEND_CAUSE(
346 "Failed to allocate one self component input port "
d6e69534 347 "message iterator.");
e803df70 348 status = BT_FUNC_STATUS_MEMORY_ERROR;
870631a2 349 goto error;
47e5a032
JG
350 }
351
6c373cc9 352 bt_object_init_shared(&iterator->base,
d6e69534 353 bt_self_component_port_input_message_iterator_destroy);
6c373cc9
PP
354 iterator->msgs = g_ptr_array_new();
355 if (!iterator->msgs) {
356 BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GPtrArray.");
e803df70 357 status = BT_FUNC_STATUS_MEMORY_ERROR;
870631a2 358 goto error;
d4393e08 359 }
3230ee6b 360
6c373cc9 361 g_ptr_array_set_size(iterator->msgs, MSG_BATCH_SIZE);
54b135a0 362 iterator->last_ns_from_origin = INT64_MIN;
da9c4c52
SM
363 iterator->auto_seek.msgs = g_queue_new();
364 if (!iterator->auto_seek.msgs) {
870631a2 365 BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GQueue.");
e803df70 366 status = BT_FUNC_STATUS_MEMORY_ERROR;
ca02df0a
PP
367 goto error;
368 }
369
370 iterator->upstream_msg_iters = g_ptr_array_new();
371 if (!iterator->upstream_msg_iters) {
372 BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GPtrArray.");
e803df70 373 status = BT_FUNC_STATUS_MEMORY_ERROR;
ca02df0a 374 goto error;
3230ee6b
PP
375 }
376
bd14d768
PP
377 iterator->upstream_component = upstream_comp;
378 iterator->upstream_port = upstream_port;
d94d92ac 379 iterator->connection = iterator->upstream_port->connection;
5c563278 380 iterator->graph = bt_component_borrow_graph(upstream_comp);
d0fea130
PP
381 set_self_comp_port_input_msg_iterator_state(iterator,
382 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_NON_INITIALIZED);
7474e7d3
PP
383
384 switch (iterator->upstream_component->class->type) {
385 case BT_COMPONENT_CLASS_TYPE_SOURCE:
386 {
387 struct bt_component_class_source *src_comp_cls =
388 (void *) iterator->upstream_component->class;
389
390 iterator->methods.next =
391 (bt_self_component_port_input_message_iterator_next_method)
392 src_comp_cls->methods.msg_iter_next;
393 iterator->methods.seek_ns_from_origin =
394 (bt_self_component_port_input_message_iterator_seek_ns_from_origin_method)
395 src_comp_cls->methods.msg_iter_seek_ns_from_origin;
396 iterator->methods.seek_beginning =
397 (bt_self_component_port_input_message_iterator_seek_beginning_method)
398 src_comp_cls->methods.msg_iter_seek_beginning;
399 iterator->methods.can_seek_ns_from_origin =
400 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
401 src_comp_cls->methods.msg_iter_can_seek_ns_from_origin;
402 iterator->methods.can_seek_beginning =
403 (bt_self_component_port_input_message_iterator_can_seek_beginning_method)
404 src_comp_cls->methods.msg_iter_can_seek_beginning;
405 break;
406 }
407 case BT_COMPONENT_CLASS_TYPE_FILTER:
408 {
409 struct bt_component_class_filter *flt_comp_cls =
410 (void *) iterator->upstream_component->class;
411
412 iterator->methods.next =
413 (bt_self_component_port_input_message_iterator_next_method)
414 flt_comp_cls->methods.msg_iter_next;
415 iterator->methods.seek_ns_from_origin =
416 (bt_self_component_port_input_message_iterator_seek_ns_from_origin_method)
417 flt_comp_cls->methods.msg_iter_seek_ns_from_origin;
418 iterator->methods.seek_beginning =
419 (bt_self_component_port_input_message_iterator_seek_beginning_method)
420 flt_comp_cls->methods.msg_iter_seek_beginning;
421 iterator->methods.can_seek_ns_from_origin =
422 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
423 flt_comp_cls->methods.msg_iter_can_seek_ns_from_origin;
424 iterator->methods.can_seek_beginning =
425 (bt_self_component_port_input_message_iterator_can_seek_beginning_method)
426 flt_comp_cls->methods.msg_iter_can_seek_beginning;
427 break;
428 }
429 default:
430 abort();
431 }
432
433 if (iterator->methods.seek_ns_from_origin &&
434 !iterator->methods.can_seek_ns_from_origin) {
435 iterator->methods.can_seek_ns_from_origin =
436 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
437 can_seek_ns_from_origin_true;
438 }
439
440 if (iterator->methods.seek_beginning &&
441 !iterator->methods.can_seek_beginning) {
442 iterator->methods.can_seek_beginning =
86751779 443 (bt_self_component_port_input_message_iterator_can_seek_beginning_method)
7474e7d3
PP
444 can_seek_beginning_true;
445 }
446
d94d92ac
PP
447 switch (upstream_comp_cls->type) {
448 case BT_COMPONENT_CLASS_TYPE_SOURCE:
449 {
450 struct bt_component_class_source *src_comp_cls =
451 (void *) upstream_comp_cls;
452
453 init_method =
21a9f056 454 (init_method_t) src_comp_cls->methods.msg_iter_initialize;
d94d92ac
PP
455 break;
456 }
457 case BT_COMPONENT_CLASS_TYPE_FILTER:
458 {
459 struct bt_component_class_filter *flt_comp_cls =
460 (void *) upstream_comp_cls;
461
462 init_method =
21a9f056 463 (init_method_t) flt_comp_cls->methods.msg_iter_initialize;
d94d92ac
PP
464 break;
465 }
466 default:
467 /* Unreachable */
468 abort();
469 }
470
471 if (init_method) {
21a9f056 472 enum bt_component_class_message_iterator_initialize_method_status iter_status;
d94d92ac
PP
473
474 BT_LIB_LOGD("Calling user's initialization method: %!+i", iterator);
8d8b141d 475 iter_status = init_method(iterator, &iterator->config, upstream_comp,
d94d92ac
PP
476 upstream_port);
477 BT_LOGD("User method returned: status=%s",
d24d5663
PP
478 bt_common_func_status_string(iter_status));
479 if (iter_status != BT_FUNC_STATUS_OK) {
870631a2
PP
480 BT_LIB_LOGW_APPEND_CAUSE(
481 "Component input port message iterator initialization method failed: "
482 "%![iter-]+i, status=%s",
483 iterator,
484 bt_common_func_status_string(iter_status));
e803df70 485 status = iter_status;
870631a2 486 goto error;
d94d92ac 487 }
8d8b141d
SM
488
489 iterator->config.frozen = true;
d94d92ac
PP
490 }
491
ca02df0a
PP
492 if (downstream_msg_iter) {
493 /* Set this message iterator's downstream message iterator */
494 iterator->downstream_msg_iter = downstream_msg_iter;
495
496 /*
497 * Add this message iterator to the downstream message
498 * iterator's array of upstream message iterators.
499 */
500 g_ptr_array_add(downstream_msg_iter->upstream_msg_iters,
501 iterator);
502 }
503
d0fea130
PP
504 set_self_comp_port_input_msg_iterator_state(iterator,
505 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
d94d92ac 506 g_ptr_array_add(port->connection->iterators, iterator);
3f7d4d90 507 BT_LIB_LOGI("Created message iterator on self component input port: "
d94d92ac
PP
508 "%![up-port-]+p, %![up-comp-]+c, %![iter-]+i",
509 upstream_port, upstream_comp, iterator);
e803df70
SM
510
511 *message_iterator = iterator;
512 status = BT_FUNC_STATUS_OK;
870631a2
PP
513 goto end;
514
515error:
516 BT_OBJECT_PUT_REF_AND_RESET(iterator);
d94d92ac
PP
517
518end:
e803df70 519 return status;
ea8d3e58
JG
520}
521
e803df70 522bt_self_component_port_input_message_iterator_create_from_message_iterator_status
ca02df0a
PP
523bt_self_component_port_input_message_iterator_create_from_message_iterator(
524 struct bt_self_message_iterator *self_msg_iter,
e803df70
SM
525 struct bt_self_component_port_input *input_port,
526 struct bt_self_component_port_input_message_iterator **message_iterator)
ca02df0a
PP
527{
528 BT_ASSERT_PRE_NON_NULL(self_msg_iter, "Message iterator");
529 return create_self_component_input_port_message_iterator(self_msg_iter,
e803df70 530 input_port, message_iterator);
ca02df0a
PP
531}
532
e803df70 533bt_self_component_port_input_message_iterator_create_from_sink_component_status
ca02df0a
PP
534bt_self_component_port_input_message_iterator_create_from_sink_component(
535 struct bt_self_component_sink *self_comp,
e803df70
SM
536 struct bt_self_component_port_input *input_port,
537 struct bt_self_component_port_input_message_iterator **message_iterator)
ca02df0a
PP
538{
539 BT_ASSERT_PRE_NON_NULL(self_comp, "Sink component");
540 return create_self_component_input_port_message_iterator(NULL,
e803df70 541 input_port, message_iterator);
ca02df0a
PP
542}
543
d6e69534
PP
544void *bt_self_message_iterator_get_data(
545 const struct bt_self_message_iterator *self_iterator)
ea8d3e58 546{
d6e69534 547 struct bt_self_component_port_input_message_iterator *iterator =
d94d92ac 548 (void *) self_iterator;
ea8d3e58 549
bdb288b3 550 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
d94d92ac 551 return iterator->user_data;
8738a040 552}
413bc2c4 553
d6e69534
PP
554void bt_self_message_iterator_set_data(
555 struct bt_self_message_iterator *self_iterator, void *data)
5c563278 556{
d6e69534 557 struct bt_self_component_port_input_message_iterator *iterator =
d94d92ac 558 (void *) self_iterator;
5c563278 559
bdb288b3 560 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
d94d92ac 561 iterator->user_data = data;
3f7d4d90 562 BT_LIB_LOGD("Set message iterator's user data: "
d94d92ac 563 "%!+i, user-data-addr=%p", iterator, data);
5c563278
PP
564}
565
8d8b141d
SM
566void bt_self_message_iterator_configuration_set_can_seek_forward(
567 bt_self_message_iterator_configuration *config,
568 bt_bool can_seek_forward)
569{
570 BT_ASSERT_PRE_NON_NULL(config, "Message iterator configuration");
571 BT_ASSERT_PRE_DEV_HOT(config, "Message iterator configuration", "");
572
573 config->can_seek_forward = can_seek_forward;
574}
575
54b135a0
SM
576/*
577 * Validate that the default clock snapshot in `msg` doesn't make us go back in
578 * time.
579 */
580
bdb288b3 581BT_ASSERT_POST_DEV_FUNC
54b135a0
SM
582static
583bool clock_snapshots_are_monotonic_one(
584 struct bt_self_component_port_input_message_iterator *iterator,
585 const bt_message *msg)
586{
587 const struct bt_clock_snapshot *clock_snapshot = NULL;
588 bt_message_type message_type = bt_message_get_type(msg);
589 int64_t ns_from_origin;
d24d5663 590 enum bt_clock_snapshot_get_ns_from_origin_status clock_snapshot_status;
54b135a0
SM
591
592 /*
593 * The default is true: if we can't figure out the clock snapshot
594 * (or there is none), assume it is fine.
595 */
596 bool result = true;
597
598 switch (message_type) {
599 case BT_MESSAGE_TYPE_EVENT:
600 {
601 struct bt_message_event *event_msg = (struct bt_message_event *) msg;
602 clock_snapshot = event_msg->default_cs;
603 break;
604 }
605 case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY:
606 {
607 struct bt_message_message_iterator_inactivity *inactivity_msg =
608 (struct bt_message_message_iterator_inactivity *) msg;
609 clock_snapshot = inactivity_msg->default_cs;
610 break;
611 }
612 case BT_MESSAGE_TYPE_PACKET_BEGINNING:
613 case BT_MESSAGE_TYPE_PACKET_END:
614 {
615 struct bt_message_packet *packet_msg = (struct bt_message_packet *) msg;
616 clock_snapshot = packet_msg->default_cs;
617 break;
618 }
188edac1
SM
619 case BT_MESSAGE_TYPE_STREAM_BEGINNING:
620 case BT_MESSAGE_TYPE_STREAM_END:
54b135a0 621 {
188edac1
SM
622 struct bt_message_stream *stream_msg = (struct bt_message_stream *) msg;
623 if (stream_msg->default_cs_state != BT_MESSAGE_STREAM_CLOCK_SNAPSHOT_STATE_KNOWN) {
624 goto end;
54b135a0 625 }
188edac1
SM
626
627 clock_snapshot = stream_msg->default_cs;
54b135a0
SM
628 break;
629 }
54b135a0
SM
630 case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
631 case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
632 {
633 struct bt_message_discarded_items *discarded_msg =
634 (struct bt_message_discarded_items *) msg;
635
636 clock_snapshot = discarded_msg->default_begin_cs;
637 break;
638 }
639 }
640
641 if (!clock_snapshot) {
642 goto end;
643 }
644
645 clock_snapshot_status = bt_clock_snapshot_get_ns_from_origin(clock_snapshot, &ns_from_origin);
d24d5663 646 if (clock_snapshot_status != BT_FUNC_STATUS_OK) {
54b135a0
SM
647 goto end;
648 }
649
650 result = ns_from_origin >= iterator->last_ns_from_origin;
651 iterator->last_ns_from_origin = ns_from_origin;
652end:
653 return result;
654}
655
bdb288b3 656BT_ASSERT_POST_DEV_FUNC
54b135a0
SM
657static
658bool clock_snapshots_are_monotonic(
659 struct bt_self_component_port_input_message_iterator *iterator,
660 bt_message_array_const msgs, uint64_t msg_count)
661{
662 uint64_t i;
663 bool result;
664
665 for (i = 0; i < msg_count; i++) {
666 if (!clock_snapshots_are_monotonic_one(iterator, msgs[i])) {
667 result = false;
668 goto end;
669 }
670 }
671
672 result = true;
673
674end:
675 return result;
676}
677
678/*
679 * When a new stream begins, verify that the clock class tied to this
680 * stream is compatible with what we've seen before.
681 */
682
bdb288b3 683BT_ASSERT_POST_DEV_FUNC
54b135a0
SM
684static
685bool clock_classes_are_compatible_one(struct bt_self_component_port_input_message_iterator *iterator,
686 const struct bt_message *msg)
687{
688 enum bt_message_type message_type = bt_message_get_type(msg);
689 bool result;
690
691 if (message_type == BT_MESSAGE_TYPE_STREAM_BEGINNING) {
692 const struct bt_message_stream *stream_msg = (struct bt_message_stream *) msg;
693 const struct bt_clock_class *clock_class = stream_msg->stream->class->default_clock_class;
694 bt_uuid clock_class_uuid = NULL;
695
696 if (clock_class) {
697 clock_class_uuid = bt_clock_class_get_uuid(clock_class);
698 }
699
700 switch (iterator->clock_expectation.type) {
701 case CLOCK_EXPECTATION_UNSET:
702 /*
703 * This is the first time we see a message with a clock
704 * snapshot: record the properties of that clock, against
705 * which we'll compare the clock properties of the following
706 * messages.
707 */
708
709 if (!clock_class) {
710 iterator->clock_expectation.type = CLOCK_EXPECTATION_NONE;
711 } else if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
712 iterator->clock_expectation.type = CLOCK_EXPECTATION_ORIGIN_UNIX;
713 } else if (clock_class_uuid) {
714 iterator->clock_expectation.type = CLOCK_EXPECTATION_ORIGIN_OTHER_UUID;
6162e6b7 715 bt_uuid_copy(iterator->clock_expectation.uuid, clock_class_uuid);
54b135a0
SM
716 } else {
717 iterator->clock_expectation.type = CLOCK_EXPECTATION_ORIGIN_OTHER_NO_UUID;
718 }
719 break;
720
721 case CLOCK_EXPECTATION_NONE:
722 if (clock_class) {
bdb288b3
PP
723 BT_ASSERT_POST_DEV_MSG(
724 "Expecting no clock class, got one: %![cc-]+K",
54b135a0
SM
725 clock_class);
726 result = false;
727 goto end;
728 }
729
730 break;
731
732 case CLOCK_EXPECTATION_ORIGIN_UNIX:
733 if (!clock_class) {
bdb288b3
PP
734 BT_ASSERT_POST_DEV_MSG(
735 "Expecting a clock class, got none.");
54b135a0
SM
736 result = false;
737 goto end;
738 }
739
740 if (!bt_clock_class_origin_is_unix_epoch(clock_class)) {
bdb288b3
PP
741 BT_ASSERT_POST_DEV_MSG(
742 "Expecting a clock class with Unix epoch origin: %![cc-]+K",
54b135a0
SM
743 clock_class);
744 result = false;
745 goto end;
746 }
747 break;
748
749 case CLOCK_EXPECTATION_ORIGIN_OTHER_UUID:
750 if (!clock_class) {
bdb288b3
PP
751 BT_ASSERT_POST_DEV_MSG(
752 "Expecting a clock class, got none.");
54b135a0
SM
753 result = false;
754 goto end;
755 }
756
757 if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
bdb288b3
PP
758 BT_ASSERT_POST_DEV_MSG(
759 "Expecting a clock class without Unix epoch origin: %![cc-]+K",
54b135a0
SM
760 clock_class);
761 result = false;
762 goto end;
763 }
764
765 if (!clock_class_uuid) {
bdb288b3
PP
766 BT_ASSERT_POST_DEV_MSG(
767 "Expecting a clock class with UUID: %![cc-]+K",
54b135a0
SM
768 clock_class);
769 result = false;
770 goto end;
771 }
772
773 if (bt_uuid_compare(iterator->clock_expectation.uuid, clock_class_uuid)) {
bdb288b3
PP
774 BT_ASSERT_POST_DEV_MSG(
775 "Expecting a clock class with UUID, got one "
54b135a0
SM
776 "with a different UUID: %![cc-]+K, expected-uuid=%!u",
777 clock_class, iterator->clock_expectation.uuid);
778 result = false;
779 goto end;
780 }
781 break;
782
783 case CLOCK_EXPECTATION_ORIGIN_OTHER_NO_UUID:
784 if (!clock_class) {
bdb288b3
PP
785 BT_ASSERT_POST_DEV_MSG(
786 "Expecting a clock class, got none.");
54b135a0
SM
787 result = false;
788 goto end;
789 }
790
791 if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
bdb288b3
PP
792 BT_ASSERT_POST_DEV_MSG(
793 "Expecting a clock class without Unix epoch origin: %![cc-]+K",
54b135a0
SM
794 clock_class);
795 result = false;
796 goto end;
797 }
798
799 if (clock_class_uuid) {
bdb288b3
PP
800 BT_ASSERT_POST_DEV_MSG(
801 "Expecting a clock class without UUID: %![cc-]+K",
54b135a0
SM
802 clock_class);
803 result = false;
804 goto end;
805 }
806 break;
807 }
808 }
809
810 result = true;
811
812end:
813 return result;
814}
815
bdb288b3 816BT_ASSERT_POST_DEV_FUNC
54b135a0
SM
817static
818bool clock_classes_are_compatible(
819 struct bt_self_component_port_input_message_iterator *iterator,
820 bt_message_array_const msgs, uint64_t msg_count)
821{
822 uint64_t i;
823 bool result;
824
825 for (i = 0; i < msg_count; i++) {
826 if (!clock_classes_are_compatible_one(iterator, msgs[i])) {
827 result = false;
828 goto end;
829 }
830 }
831
832 result = true;
833
834end:
835 return result;
836}
837
838/*
839 * Call the `next` method of the iterator. Do some validation on the returned
840 * messages.
841 */
842
843static
d24d5663
PP
844enum bt_component_class_message_iterator_next_method_status
845call_iterator_next_method(
54b135a0
SM
846 struct bt_self_component_port_input_message_iterator *iterator,
847 bt_message_array_const msgs, uint64_t capacity, uint64_t *user_count)
848{
d24d5663 849 enum bt_component_class_message_iterator_next_method_status status;
54b135a0 850
98b15851 851 BT_ASSERT_DBG(iterator->methods.next);
54b135a0 852 BT_LOGD_STR("Calling user's \"next\" method.");
54b135a0 853 status = iterator->methods.next(iterator, msgs, capacity, user_count);
f6f301d7 854 BT_LOGD("User method returned: status=%s, msg-count=%" PRIu64,
d24d5663 855 bt_common_func_status_string(status), *user_count);
54b135a0 856
d24d5663 857 if (status == BT_FUNC_STATUS_OK) {
bdb288b3 858 BT_ASSERT_POST_DEV(clock_classes_are_compatible(iterator, msgs, *user_count),
54b135a0 859 "Clocks are not compatible");
bdb288b3 860 BT_ASSERT_POST_DEV(clock_snapshots_are_monotonic(iterator, msgs, *user_count),
54b135a0
SM
861 "Clock snapshots are not monotonic");
862 }
863
864 return status;
865}
866
d24d5663 867enum bt_message_iterator_next_status
d6e69534
PP
868bt_self_component_port_input_message_iterator_next(
869 struct bt_self_component_port_input_message_iterator *iterator,
870 bt_message_array_const *msgs, uint64_t *user_count)
3230ee6b 871{
d24d5663 872 enum bt_message_iterator_next_status status = BT_FUNC_STATUS_OK;
d94d92ac 873
bdb288b3
PP
874 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
875 BT_ASSERT_PRE_DEV_NON_NULL(msgs, "Message array (output)");
876 BT_ASSERT_PRE_DEV_NON_NULL(user_count, "Message count (output)");
877 BT_ASSERT_PRE_DEV(iterator->state ==
d6e69534
PP
878 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE,
879 "Message iterator's \"next\" called, but "
7474e7d3 880 "message iterator is in the wrong state: %!+i", iterator);
98b15851
PP
881 BT_ASSERT_DBG(iterator->upstream_component);
882 BT_ASSERT_DBG(iterator->upstream_component->class);
bdb288b3 883 BT_ASSERT_PRE_DEV(
5badd463
PP
884 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
885 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
4725a201
PP
886 "Graph is not configured: %!+g",
887 bt_component_borrow_graph(iterator->upstream_component));
d94d92ac 888 BT_LIB_LOGD("Getting next self component input port "
3f7d4d90
PP
889 "message iterator's messages: %!+i, batch-size=%u",
890 iterator, MSG_BATCH_SIZE);
d3eb6e8f 891
3230ee6b 892 /*
d6e69534 893 * Call the user's "next" method to get the next messages
fa054faf 894 * and status.
3230ee6b 895 */
3f7d4d90 896 *user_count = 0;
d24d5663 897 status = (int) call_iterator_next_method(iterator,
6c373cc9 898 (void *) iterator->msgs->pdata, MSG_BATCH_SIZE,
7474e7d3 899 user_count);
870631a2
PP
900 BT_LOGD("User method returned: status=%s, msg-count=%" PRIu64,
901 bt_common_func_status_string(status), *user_count);
d4393e08 902 if (status < 0) {
870631a2
PP
903 BT_LIB_LOGW_APPEND_CAUSE(
904 "Component input port message iterator's \"next\" method failed: "
905 "%![iter-]+i, status=%s",
906 iterator, bt_common_func_status_string(status));
f42867e2
PP
907 goto end;
908 }
3230ee6b 909
d0fea130
PP
910 /*
911 * There is no way that this iterator could have been finalized
912 * during its "next" method, as the only way to do this is to
913 * put the last iterator's reference, and this can only be done
914 * by its downstream owner.
7474e7d3
PP
915 *
916 * For the same reason, there is no way that this iterator could
917 * have seeked (cannot seek a self message iterator).
d0fea130 918 */
98b15851 919 BT_ASSERT_DBG(iterator->state ==
d0fea130 920 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
8cf27cc5 921
d4393e08 922 switch (status) {
d24d5663 923 case BT_FUNC_STATUS_OK:
bdb288b3 924 BT_ASSERT_POST_DEV(*user_count <= MSG_BATCH_SIZE,
7474e7d3
PP
925 "Invalid returned message count: greater than "
926 "batch size: count=%" PRIu64 ", batch-size=%u",
927 *user_count, MSG_BATCH_SIZE);
6c373cc9 928 *msgs = (void *) iterator->msgs->pdata;
d4393e08 929 break;
d24d5663 930 case BT_FUNC_STATUS_AGAIN:
d4393e08 931 goto end;
d24d5663 932 case BT_FUNC_STATUS_END:
d0fea130
PP
933 set_self_comp_port_input_msg_iterator_state(iterator,
934 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED);
f42867e2 935 goto end;
f42867e2
PP
936 default:
937 /* Unknown non-error status */
938 abort();
41a2b7ae
PP
939 }
940
941end:
3230ee6b
PP
942 return status;
943}
944
7474e7d3
PP
945struct bt_component *
946bt_self_component_port_input_message_iterator_borrow_component(
d6e69534 947 struct bt_self_component_port_input_message_iterator *iterator)
d94d92ac 948{
bdb288b3 949 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
d94d92ac
PP
950 return iterator->upstream_component;
951}
952
d6e69534
PP
953struct bt_self_component *bt_self_message_iterator_borrow_component(
954 struct bt_self_message_iterator *self_iterator)
413bc2c4 955{
d6e69534 956 struct bt_self_component_port_input_message_iterator *iterator =
d94d92ac 957 (void *) self_iterator;
90157d89 958
bdb288b3 959 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
d94d92ac 960 return (void *) iterator->upstream_component;
413bc2c4
JG
961}
962
50e763f6 963struct bt_self_component_port_output *bt_self_message_iterator_borrow_port(
d6e69534 964 struct bt_self_message_iterator *self_iterator)
91457551 965{
d6e69534 966 struct bt_self_component_port_input_message_iterator *iterator =
d94d92ac
PP
967 (void *) self_iterator;
968
bdb288b3 969 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
d94d92ac 970 return (void *) iterator->upstream_port;
91457551 971}
8ed535b5 972
f2fb1b32
SM
973enum bt_message_iterator_can_seek_ns_from_origin_status
974bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
7474e7d3 975 struct bt_self_component_port_input_message_iterator *iterator,
f2fb1b32 976 int64_t ns_from_origin, bt_bool *can_seek)
7474e7d3 977{
f2fb1b32 978 enum bt_message_iterator_can_seek_ns_from_origin_status status;
7474e7d3
PP
979
980 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
f2fb1b32 981 BT_ASSERT_PRE_NON_NULL(can_seek, "Result (output)");
7474e7d3 982 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
5badd463
PP
983 BT_ASSERT_PRE(
984 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
985 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
7474e7d3
PP
986 "Graph is not configured: %!+g",
987 bt_component_borrow_graph(iterator->upstream_component));
988
989 if (iterator->methods.can_seek_ns_from_origin) {
f2fb1b32
SM
990 /*
991 * Initialize to an invalid value, so we can post-assert that
992 * the method returned a valid value.
993 */
994 *can_seek = -1;
995
c0e46a7c
SM
996 BT_LIB_LOGD("Calling user's \"can seek nanoseconds from origin\" method: %!+i",
997 iterator);
998
f2fb1b32
SM
999 status = (int) iterator->methods.can_seek_ns_from_origin(iterator,
1000 ns_from_origin, can_seek);
1001
c0e46a7c
SM
1002 if (status != BT_FUNC_STATUS_OK) {
1003 BT_LIB_LOGW_APPEND_CAUSE(
1004 "Component input port message iterator's \"can seek nanoseconds from origin\" method failed: "
1005 "%![iter-]+i, status=%s",
1006 iterator, bt_common_func_status_string(status));
1007 goto end;
1008 }
1009
1010 BT_ASSERT_POST(*can_seek == BT_TRUE || *can_seek == BT_FALSE,
f2fb1b32
SM
1011 "Unexpected boolean value returned from user's \"can seek ns from origin\" method: val=%d, %![iter-]+i",
1012 *can_seek, iterator);
1013
c0e46a7c
SM
1014 BT_LIB_LOGD(
1015 "User's \"can seek nanoseconds from origin\" returned successfully: "
1016 "%![iter-]+i, can-seek=%d",
1017 iterator, *can_seek);
1018
1019 if (*can_seek) {
1020 goto end;
1021 }
7474e7d3
PP
1022 }
1023
1024 /*
c0e46a7c
SM
1025 * Automatic seeking fall back: if we can seek to the beginning and the
1026 * iterator supports forward seeking then we can automatically seek to
1027 * any timestamp.
7474e7d3 1028 */
f2fb1b32
SM
1029 status = (int) bt_self_component_port_input_message_iterator_can_seek_beginning(
1030 iterator, can_seek);
c0e46a7c
SM
1031 if (status != BT_FUNC_STATUS_OK) {
1032 goto end;
1033 }
1034
1035 *can_seek = *can_seek && iterator->config.can_seek_forward;
7474e7d3
PP
1036
1037end:
f2fb1b32 1038 return status;
7474e7d3
PP
1039}
1040
f2fb1b32
SM
1041enum bt_message_iterator_can_seek_beginning_status
1042bt_self_component_port_input_message_iterator_can_seek_beginning(
1043 struct bt_self_component_port_input_message_iterator *iterator,
1044 bt_bool *can_seek)
7474e7d3 1045{
f2fb1b32 1046 enum bt_message_iterator_can_seek_beginning_status status;
7474e7d3
PP
1047
1048 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
f2fb1b32 1049 BT_ASSERT_PRE_NON_NULL(can_seek, "Result (output)");
7474e7d3 1050 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
5badd463
PP
1051 BT_ASSERT_PRE(
1052 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
1053 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
7474e7d3
PP
1054 "Graph is not configured: %!+g",
1055 bt_component_borrow_graph(iterator->upstream_component));
1056
1057 if (iterator->methods.can_seek_beginning) {
f2fb1b32
SM
1058 /*
1059 * Initialize to an invalid value, so we can post-assert that
1060 * the method returned a valid value.
1061 */
1062 *can_seek = -1;
1063
1064 status = (int) iterator->methods.can_seek_beginning(iterator, can_seek);
1065
1066 BT_ASSERT_POST(
1067 status != BT_FUNC_STATUS_OK ||
1068 *can_seek == BT_TRUE ||
1069 *can_seek == BT_FALSE,
1070 "Unexpected boolean value returned from user's \"can seek beginning\" method: val=%d, %![iter-]+i",
1071 *can_seek, iterator);
1072 } else {
1073 *can_seek = BT_FALSE;
1074 status = BT_FUNC_STATUS_OK;
7474e7d3
PP
1075 }
1076
f2fb1b32 1077 return status;
7474e7d3
PP
1078}
1079
1080static inline
003e713f 1081void set_iterator_state_after_seeking(
7474e7d3 1082 struct bt_self_component_port_input_message_iterator *iterator,
d24d5663 1083 int status)
7474e7d3
PP
1084{
1085 enum bt_self_component_port_input_message_iterator_state new_state = 0;
1086
1087 /* Set iterator's state depending on seeking status */
1088 switch (status) {
d24d5663 1089 case BT_FUNC_STATUS_OK:
7474e7d3
PP
1090 new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE;
1091 break;
d24d5663 1092 case BT_FUNC_STATUS_AGAIN:
7474e7d3
PP
1093 new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_AGAIN;
1094 break;
d24d5663
PP
1095 case BT_FUNC_STATUS_ERROR:
1096 case BT_FUNC_STATUS_MEMORY_ERROR:
7474e7d3
PP
1097 new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_ERROR;
1098 break;
d24d5663 1099 case BT_FUNC_STATUS_END:
7474e7d3
PP
1100 new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED;
1101 break;
1102 default:
1103 abort();
1104 }
1105
1106 set_self_comp_port_input_msg_iterator_state(iterator, new_state);
1107}
1108
54b135a0
SM
1109static
1110void reset_iterator_expectations(
1111 struct bt_self_component_port_input_message_iterator *iterator)
1112{
1113 iterator->last_ns_from_origin = INT64_MIN;
1114 iterator->clock_expectation.type = CLOCK_EXPECTATION_UNSET;
1115}
1116
f2fb1b32
SM
1117static
1118bool message_iterator_can_seek_beginning(
1119 struct bt_self_component_port_input_message_iterator *iterator)
1120{
1121 enum bt_message_iterator_can_seek_beginning_status status;
1122 bt_bool can_seek;
1123
1124 status = bt_self_component_port_input_message_iterator_can_seek_beginning(
1125 iterator, &can_seek);
1126 if (status != BT_FUNC_STATUS_OK) {
1127 can_seek = BT_FALSE;
1128 }
1129
1130 return can_seek;
1131}
1132
d24d5663 1133enum bt_message_iterator_seek_beginning_status
7474e7d3
PP
1134bt_self_component_port_input_message_iterator_seek_beginning(
1135 struct bt_self_component_port_input_message_iterator *iterator)
1136{
9275bef4 1137 int status;
7474e7d3
PP
1138
1139 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
1140 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
5badd463
PP
1141 BT_ASSERT_PRE(
1142 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
1143 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
7474e7d3
PP
1144 "Graph is not configured: %!+g",
1145 bt_component_borrow_graph(iterator->upstream_component));
f2fb1b32 1146 BT_ASSERT_PRE(message_iterator_can_seek_beginning(iterator),
7474e7d3 1147 "Message iterator cannot seek beginning: %!+i", iterator);
54b135a0
SM
1148
1149 /*
1150 * We are seeking, reset our expectations about how the following
1151 * messages should look like.
1152 */
1153 reset_iterator_expectations(iterator);
1154
7474e7d3
PP
1155 BT_LIB_LOGD("Calling user's \"seek beginning\" method: %!+i", iterator);
1156 set_self_comp_port_input_msg_iterator_state(iterator,
1157 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_SEEKING);
1158 status = iterator->methods.seek_beginning(iterator);
1159 BT_LOGD("User method returned: status=%s",
d24d5663
PP
1160 bt_common_func_status_string(status));
1161 BT_ASSERT_POST(status == BT_FUNC_STATUS_OK ||
1162 status == BT_FUNC_STATUS_ERROR ||
1163 status == BT_FUNC_STATUS_MEMORY_ERROR ||
1164 status == BT_FUNC_STATUS_AGAIN,
7474e7d3 1165 "Unexpected status: %![iter-]+i, status=%s",
d24d5663 1166 iterator, bt_common_func_status_string(status));
870631a2
PP
1167 if (status < 0) {
1168 BT_LIB_LOGW_APPEND_CAUSE(
1169 "Component input port message iterator's \"seek beginning\" method failed: "
1170 "%![iter-]+i, status=%s",
1171 iterator, bt_common_func_status_string(status));
1172 }
1173
7474e7d3
PP
1174 set_iterator_state_after_seeking(iterator, status);
1175 return status;
1176}
1177
8d8b141d
SM
1178bt_bool
1179bt_self_component_port_input_message_iterator_can_seek_forward(
1180 bt_self_component_port_input_message_iterator *iterator)
1181{
1182 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
1183
1184 return iterator->config.can_seek_forward;
1185}
1186
5b7b55be
SM
1187/*
1188 * Structure used to record the state of a given stream during the fast-forward
1189 * phase of an auto-seek.
1190 */
1191struct auto_seek_stream_state {
1192 /*
1193 * Value representing which step of this timeline we are at.
1194 *
1195 * time --->
188edac1 1196 * [SB] 1 [PB] 2 [PE] 1 [SE]
5b7b55be
SM
1197 *
1198 * At each point in the timeline, the messages we need to replicate are:
1199 *
1200 * 1: Stream beginning
188edac1 1201 * 2: Stream beginning, packet beginning
5b7b55be
SM
1202 *
1203 * Before "Stream beginning" and after "Stream end", we don't need to
1204 * replicate anything as the stream doesn't exist.
1205 */
1206 enum {
1207 AUTO_SEEK_STREAM_STATE_STREAM_BEGAN,
5b7b55be
SM
1208 AUTO_SEEK_STREAM_STATE_PACKET_BEGAN,
1209 } state;
1210
1211 /*
1212 * If `state` is AUTO_SEEK_STREAM_STATE_PACKET_BEGAN, the packet we are
1213 * in. This is a weak reference, since the packet will always be
1214 * alive by the time we use it.
1215 */
1216 struct bt_packet *packet;
188edac1
SM
1217
1218 /* Have we see a message with a clock snapshot yet? */
1219 bool seen_clock_snapshot;
5b7b55be
SM
1220};
1221
1222static
1223struct auto_seek_stream_state *create_auto_seek_stream_state(void)
1224{
1225 return g_new0(struct auto_seek_stream_state, 1);
1226}
1227
1228static
1229void destroy_auto_seek_stream_state(void *ptr)
1230{
1231 g_free(ptr);
1232}
1233
1234static
1235GHashTable *create_auto_seek_stream_states(void)
1236{
1237 return g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL,
1238 destroy_auto_seek_stream_state);
1239}
1240
1241static
1242void destroy_auto_seek_stream_states(GHashTable *stream_states)
1243{
1244 g_hash_table_destroy(stream_states);
1245}
1246
1247/*
1248 * Handle one message while we are in the fast-forward phase of an auto-seek.
1249 *
1250 * Sets `*got_first` to true if the message's timestamp is greater or equal to
1251 * `ns_from_origin`. In other words, if this is the first message after our
1252 * seek point.
1253 *
1254 * `stream_states` is an hash table of `bt_stream *` (weak reference) to
1255 * `struct auto_seek_stream_state` used to keep the state of each stream
1256 * during the fast-forward.
1257 */
1258
7474e7d3 1259static inline
d24d5663 1260int auto_seek_handle_message(
5b9e151d
PP
1261 struct bt_self_component_port_input_message_iterator *iterator,
1262 int64_t ns_from_origin, const struct bt_message *msg,
5b7b55be 1263 bool *got_first, GHashTable *stream_states)
7474e7d3 1264{
d24d5663 1265 int status = BT_FUNC_STATUS_OK;
5b9e151d 1266 int64_t msg_ns_from_origin;
7474e7d3 1267 const struct bt_clock_snapshot *clk_snapshot = NULL;
5b9e151d
PP
1268 int ret;
1269
98b15851
PP
1270 BT_ASSERT_DBG(msg);
1271 BT_ASSERT_DBG(got_first);
7474e7d3
PP
1272
1273 switch (msg->type) {
1274 case BT_MESSAGE_TYPE_EVENT:
1275 {
1276 const struct bt_message_event *event_msg =
1277 (const void *) msg;
1278
2c091c04 1279 clk_snapshot = event_msg->default_cs;
bdb288b3 1280 BT_ASSERT_POST_DEV(clk_snapshot,
c7072d5a
PP
1281 "Event message has no default clock snapshot: %!+n",
1282 event_msg);
7474e7d3
PP
1283 break;
1284 }
b9fd9cbb 1285 case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY:
7474e7d3 1286 {
b9fd9cbb 1287 const struct bt_message_message_iterator_inactivity *inactivity_msg =
7474e7d3
PP
1288 (const void *) msg;
1289
7474e7d3 1290 clk_snapshot = inactivity_msg->default_cs;
98b15851 1291 BT_ASSERT_DBG(clk_snapshot);
7474e7d3
PP
1292 break;
1293 }
16663a5e
PP
1294 case BT_MESSAGE_TYPE_PACKET_BEGINNING:
1295 case BT_MESSAGE_TYPE_PACKET_END:
c7072d5a
PP
1296 {
1297 const struct bt_message_packet *packet_msg =
1298 (const void *) msg;
1299
1300 clk_snapshot = packet_msg->default_cs;
bdb288b3 1301 BT_ASSERT_POST_DEV(clk_snapshot,
c7072d5a
PP
1302 "Packet message has no default clock snapshot: %!+n",
1303 packet_msg);
1304 break;
1305 }
16663a5e
PP
1306 case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
1307 case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
7474e7d3 1308 {
5b9e151d
PP
1309 struct bt_message_discarded_items *msg_disc_items =
1310 (void *) msg;
1311
bdb288b3 1312 BT_ASSERT_POST_DEV(msg_disc_items->default_begin_cs &&
5b9e151d
PP
1313 msg_disc_items->default_end_cs,
1314 "Discarded events/packets message has no default clock snapshots: %!+n",
1315 msg_disc_items);
1316 ret = bt_clock_snapshot_get_ns_from_origin(
1317 msg_disc_items->default_begin_cs,
1318 &msg_ns_from_origin);
1319 if (ret) {
d24d5663 1320 status = BT_FUNC_STATUS_ERROR;
5b9e151d
PP
1321 goto end;
1322 }
7474e7d3 1323
5b9e151d
PP
1324 if (msg_ns_from_origin >= ns_from_origin) {
1325 *got_first = true;
1326 goto push_msg;
1327 }
1328
1329 ret = bt_clock_snapshot_get_ns_from_origin(
1330 msg_disc_items->default_end_cs,
1331 &msg_ns_from_origin);
1332 if (ret) {
d24d5663 1333 status = BT_FUNC_STATUS_ERROR;
5b9e151d
PP
1334 goto end;
1335 }
1336
1337 if (msg_ns_from_origin >= ns_from_origin) {
1338 /*
1339 * The discarded items message's beginning time
1340 * is before the requested seeking time, but its
1341 * end time is after. Modify the message so as
1342 * to set its beginning time to the requested
1343 * seeking time, and make its item count unknown
1344 * as we don't know if items were really
1345 * discarded within the new time range.
1346 */
4af85094 1347 uint64_t new_begin_raw_value = 0;
5b9e151d
PP
1348
1349 ret = bt_clock_class_clock_value_from_ns_from_origin(
1350 msg_disc_items->default_end_cs->clock_class,
1351 ns_from_origin, &new_begin_raw_value);
1352 if (ret) {
d24d5663 1353 status = BT_FUNC_STATUS_ERROR;
5b9e151d
PP
1354 goto end;
1355 }
1356
1357 bt_clock_snapshot_set_raw_value(
1358 msg_disc_items->default_begin_cs,
1359 new_begin_raw_value);
1360 msg_disc_items->count.base.avail =
1361 BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE;
1362
1363 /*
1364 * It is safe to push it because its beginning
1365 * time is exactly the requested seeking time.
1366 */
1367 goto push_msg;
1368 } else {
1369 goto skip_msg;
1370 }
7474e7d3 1371 }
188edac1
SM
1372 case BT_MESSAGE_TYPE_STREAM_BEGINNING:
1373 case BT_MESSAGE_TYPE_STREAM_END:
7474e7d3 1374 {
188edac1
SM
1375 struct bt_message_stream *stream_msg =
1376 (struct bt_message_stream *) msg;
7474e7d3 1377
188edac1
SM
1378 if (stream_msg->default_cs_state != BT_MESSAGE_STREAM_CLOCK_SNAPSHOT_STATE_KNOWN) {
1379 /* Ignore */
5b9e151d 1380 goto skip_msg;
16663a5e
PP
1381 }
1382
188edac1 1383 clk_snapshot = stream_msg->default_cs;
7474e7d3
PP
1384 break;
1385 }
1386 default:
1387 abort();
1388 }
1389
98b15851 1390 BT_ASSERT_DBG(clk_snapshot);
5b9e151d
PP
1391 ret = bt_clock_snapshot_get_ns_from_origin(clk_snapshot,
1392 &msg_ns_from_origin);
1393 if (ret) {
d24d5663 1394 status = BT_FUNC_STATUS_ERROR;
7474e7d3
PP
1395 goto end;
1396 }
1397
5b9e151d
PP
1398 if (msg_ns_from_origin >= ns_from_origin) {
1399 *got_first = true;
1400 goto push_msg;
1401 }
1402
1403skip_msg:
5b7b55be
SM
1404 /* This message won't be sent downstream. */
1405 switch (msg->type) {
1406 case BT_MESSAGE_TYPE_STREAM_BEGINNING:
1407 {
1408 const struct bt_message_stream *stream_msg = (const void *) msg;
1409 struct auto_seek_stream_state *stream_state;
5b7b55be
SM
1410
1411 /* Update stream's state: stream began. */
1412 stream_state = create_auto_seek_stream_state();
1413 if (!stream_state) {
d24d5663 1414 status = BT_FUNC_STATUS_MEMORY_ERROR;
5b7b55be
SM
1415 goto end;
1416 }
1417
1418 stream_state->state = AUTO_SEEK_STREAM_STATE_STREAM_BEGAN;
e74dbb33 1419
188edac1
SM
1420 if (stream_msg->default_cs_state == BT_MESSAGE_STREAM_CLOCK_SNAPSHOT_STATE_KNOWN) {
1421 stream_state->seen_clock_snapshot = true;
1422 }
1423
98b15851 1424 BT_ASSERT_DBG(!bt_g_hash_table_contains(stream_states, stream_msg->stream));
e74dbb33 1425 g_hash_table_insert(stream_states, stream_msg->stream, stream_state);
5b7b55be
SM
1426 break;
1427 }
188edac1 1428 case BT_MESSAGE_TYPE_PACKET_BEGINNING:
5b7b55be 1429 {
188edac1 1430 const struct bt_message_packet *packet_msg =
5b7b55be
SM
1431 (const void *) msg;
1432 struct auto_seek_stream_state *stream_state;
1433
188edac1
SM
1434 /* Update stream's state: packet began. */
1435 stream_state = g_hash_table_lookup(stream_states, packet_msg->packet->stream);
98b15851
PP
1436 BT_ASSERT_DBG(stream_state);
1437 BT_ASSERT_DBG(stream_state->state == AUTO_SEEK_STREAM_STATE_STREAM_BEGAN);
188edac1 1438 stream_state->state = AUTO_SEEK_STREAM_STATE_PACKET_BEGAN;
98b15851 1439 BT_ASSERT_DBG(!stream_state->packet);
188edac1
SM
1440 stream_state->packet = packet_msg->packet;
1441
1442 if (packet_msg->packet->stream->class->packets_have_beginning_default_clock_snapshot) {
1443 stream_state->seen_clock_snapshot = true;
1444 }
1445
5b7b55be
SM
1446 break;
1447 }
188edac1 1448 case BT_MESSAGE_TYPE_EVENT:
5b7b55be 1449 {
188edac1 1450 const struct bt_message_event *event_msg = (const void *) msg;
5b7b55be
SM
1451 struct auto_seek_stream_state *stream_state;
1452
188edac1
SM
1453 stream_state = g_hash_table_lookup(stream_states,
1454 event_msg->event->packet->stream);
98b15851 1455 BT_ASSERT_DBG(stream_state);
5b7b55be 1456
188edac1
SM
1457 // HELPME: are we sure that event messages have clock snapshots at this point?
1458 stream_state->seen_clock_snapshot = true;
1459
5b7b55be
SM
1460 break;
1461 }
1462 case BT_MESSAGE_TYPE_PACKET_END:
1463 {
1464 const struct bt_message_packet *packet_msg =
1465 (const void *) msg;
1466 struct auto_seek_stream_state *stream_state;
1467
1468 /* Update stream's state: packet ended. */
1469 stream_state = g_hash_table_lookup(stream_states, packet_msg->packet->stream);
98b15851
PP
1470 BT_ASSERT_DBG(stream_state);
1471 BT_ASSERT_DBG(stream_state->state == AUTO_SEEK_STREAM_STATE_PACKET_BEGAN);
188edac1 1472 stream_state->state = AUTO_SEEK_STREAM_STATE_STREAM_BEGAN;
98b15851 1473 BT_ASSERT_DBG(stream_state->packet);
5b7b55be 1474 stream_state->packet = NULL;
5b7b55be 1475
188edac1
SM
1476 if (packet_msg->packet->stream->class->packets_have_end_default_clock_snapshot) {
1477 stream_state->seen_clock_snapshot = true;
1478 }
5b7b55be 1479
5b7b55be
SM
1480 break;
1481 }
1482 case BT_MESSAGE_TYPE_STREAM_END:
1483 {
1484 const struct bt_message_stream *stream_msg = (const void *) msg;
1485 struct auto_seek_stream_state *stream_state;
1486
1487 stream_state = g_hash_table_lookup(stream_states, stream_msg->stream);
98b15851
PP
1488 BT_ASSERT_DBG(stream_state);
1489 BT_ASSERT_DBG(stream_state->state == AUTO_SEEK_STREAM_STATE_STREAM_BEGAN);
1490 BT_ASSERT_DBG(!stream_state->packet);
5b7b55be
SM
1491
1492 /* Update stream's state: this stream doesn't exist anymore. */
1493 g_hash_table_remove(stream_states, stream_msg->stream);
1494 break;
1495 }
188edac1
SM
1496 case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
1497 case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
1498 {
1499 const struct bt_message_discarded_items *discarded_msg =
1500 (const void *) msg;
1501 struct auto_seek_stream_state *stream_state;
1502
1503 stream_state = g_hash_table_lookup(stream_states, discarded_msg->stream);
98b15851 1504 BT_ASSERT_DBG(stream_state);
188edac1
SM
1505
1506 if ((msg->type == BT_MESSAGE_TYPE_DISCARDED_EVENTS && discarded_msg->stream->class->discarded_events_have_default_clock_snapshots) ||
1507 (msg->type == BT_MESSAGE_TYPE_DISCARDED_PACKETS && discarded_msg->stream->class->discarded_packets_have_default_clock_snapshots)) {
1508 stream_state->seen_clock_snapshot = true;
1509 }
1510
1511 break;
1512 }
5b7b55be
SM
1513 default:
1514 break;
1515 }
1516
6871026b 1517 bt_object_put_ref_no_null_check(msg);
04c0cec6 1518 msg = NULL;
5b9e151d
PP
1519 goto end;
1520
1521push_msg:
da9c4c52 1522 g_queue_push_tail(iterator->auto_seek.msgs, (void *) msg);
5b9e151d 1523 msg = NULL;
7474e7d3
PP
1524
1525end:
98b15851 1526 BT_ASSERT_DBG(!msg || status != BT_FUNC_STATUS_OK);
5b9e151d 1527 return status;
7474e7d3
PP
1528}
1529
1530static
d24d5663 1531int find_message_ge_ns_from_origin(
7474e7d3 1532 struct bt_self_component_port_input_message_iterator *iterator,
5b7b55be 1533 int64_t ns_from_origin, GHashTable *stream_states)
7474e7d3 1534{
c70a96a6 1535 int status = BT_FUNC_STATUS_OK;
7474e7d3
PP
1536 enum bt_self_component_port_input_message_iterator_state init_state =
1537 iterator->state;
1538 const struct bt_message *messages[MSG_BATCH_SIZE];
1539 uint64_t user_count = 0;
1540 uint64_t i;
5b9e151d 1541 bool got_first = false;
7474e7d3 1542
98b15851 1543 BT_ASSERT_DBG(iterator);
7474e7d3
PP
1544 memset(&messages[0], 0, sizeof(messages[0]) * MSG_BATCH_SIZE);
1545
1546 /*
1547 * Make this iterator temporarily active (not seeking) to call
1548 * the "next" method.
1549 */
1550 set_self_comp_port_input_msg_iterator_state(iterator,
1551 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
1552
98b15851 1553 BT_ASSERT_DBG(iterator->methods.next);
7474e7d3 1554
e0dade92 1555 while (!got_first) {
7474e7d3
PP
1556 /*
1557 * Call the user's "next" method to get the next
1558 * messages and status.
1559 */
54b135a0 1560 status = call_iterator_next_method(iterator,
7474e7d3 1561 &messages[0], MSG_BATCH_SIZE, &user_count);
870631a2
PP
1562 BT_LOGD("User method returned: status=%s",
1563 bt_common_func_status_string(status));
1564 if (status < 0) {
1565 BT_LIB_LOGW_APPEND_CAUSE(
1566 "Component input port message iterator's \"next\" method failed: "
1567 "%![iter-]+i, status=%s",
1568 iterator, bt_common_func_status_string(status));
1569 }
7474e7d3 1570
7474e7d3
PP
1571 /*
1572 * The user's "next" method must not do any action which
1573 * would change the iterator's state.
1574 */
98b15851 1575 BT_ASSERT_DBG(iterator->state ==
7474e7d3 1576 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
7474e7d3
PP
1577
1578 switch (status) {
d24d5663 1579 case BT_FUNC_STATUS_OK:
bdb288b3 1580 BT_ASSERT_POST_DEV(user_count <= MSG_BATCH_SIZE,
7474e7d3
PP
1581 "Invalid returned message count: greater than "
1582 "batch size: count=%" PRIu64 ", batch-size=%u",
1583 user_count, MSG_BATCH_SIZE);
1584 break;
d24d5663
PP
1585 case BT_FUNC_STATUS_AGAIN:
1586 case BT_FUNC_STATUS_ERROR:
1587 case BT_FUNC_STATUS_MEMORY_ERROR:
1588 case BT_FUNC_STATUS_END:
7474e7d3
PP
1589 goto end;
1590 default:
1591 abort();
1592 }
1593
7474e7d3 1594 for (i = 0; i < user_count; i++) {
5b9e151d 1595 if (got_first) {
da9c4c52 1596 g_queue_push_tail(iterator->auto_seek.msgs,
5b9e151d
PP
1597 (void *) messages[i]);
1598 messages[i] = NULL;
7474e7d3
PP
1599 continue;
1600 }
1601
5b9e151d 1602 status = auto_seek_handle_message(iterator,
5b7b55be
SM
1603 ns_from_origin, messages[i], &got_first,
1604 stream_states);
d24d5663 1605 if (status == BT_FUNC_STATUS_OK) {
e0dade92 1606 /* Message was either pushed or moved */
5b9e151d
PP
1607 messages[i] = NULL;
1608 } else {
7474e7d3
PP
1609 goto end;
1610 }
7474e7d3
PP
1611 }
1612 }
1613
1614end:
1615 for (i = 0; i < user_count; i++) {
1616 if (messages[i]) {
6871026b 1617 bt_object_put_ref_no_null_check(messages[i]);
7474e7d3
PP
1618 }
1619 }
1620
1621 set_self_comp_port_input_msg_iterator_state(iterator, init_state);
1622 return status;
1623}
1624
5b7b55be
SM
1625/*
1626 * This function is installed as the iterator's next callback after we have
1627 * auto-seeked (seeked to the beginning and fast-forwarded) to send the
1628 * messages saved in iterator->auto_seek.msgs. Once this is done, the original
1629 * next callback is put back.
1630 */
1631
7474e7d3 1632static
d24d5663 1633enum bt_component_class_message_iterator_next_method_status post_auto_seek_next(
7474e7d3
PP
1634 struct bt_self_component_port_input_message_iterator *iterator,
1635 bt_message_array_const msgs, uint64_t capacity,
1636 uint64_t *count)
1637{
da9c4c52 1638 BT_ASSERT(!g_queue_is_empty(iterator->auto_seek.msgs));
5b9e151d 1639 *count = 0;
7474e7d3
PP
1640
1641 /*
1642 * Move auto-seek messages to the output array (which is this
5b9e151d 1643 * iterator's base message array).
7474e7d3 1644 */
da9c4c52
SM
1645 while (capacity > 0 && !g_queue_is_empty(iterator->auto_seek.msgs)) {
1646 msgs[*count] = g_queue_pop_head(iterator->auto_seek.msgs);
5b9e151d
PP
1647 capacity--;
1648 (*count)++;
7474e7d3 1649 }
7474e7d3 1650
5b9e151d
PP
1651 BT_ASSERT(*count > 0);
1652
da9c4c52 1653 if (g_queue_is_empty(iterator->auto_seek.msgs)) {
572075a8
SM
1654 /* No more auto-seek messages, restore user's next callback. */
1655 BT_ASSERT(iterator->auto_seek.original_next_callback);
1656 iterator->methods.next = iterator->auto_seek.original_next_callback;
1657 iterator->auto_seek.original_next_callback = NULL;
7474e7d3
PP
1658 }
1659
d24d5663 1660 return BT_FUNC_STATUS_OK;
7474e7d3
PP
1661}
1662
5b7b55be
SM
1663static inline
1664int clock_raw_value_from_ns_from_origin(const bt_clock_class *clock_class,
1665 int64_t ns_from_origin, uint64_t *raw_value)
1666{
1667
1668 int64_t cc_offset_s = clock_class->offset_seconds;
1669 uint64_t cc_offset_cycles = clock_class->offset_cycles;
1670 uint64_t cc_freq = clock_class->frequency;
1671
1672 return bt_common_clock_value_from_ns_from_origin(cc_offset_s,
1673 cc_offset_cycles, cc_freq, ns_from_origin, raw_value);
1674}
1675
f2fb1b32
SM
1676static
1677bool message_iterator_can_seek_ns_from_origin(
1678 struct bt_self_component_port_input_message_iterator *iterator,
1679 int64_t ns_from_origin)
1680{
1681 enum bt_message_iterator_can_seek_ns_from_origin_status status;
1682 bt_bool can_seek;
1683
1684 status = bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
1685 iterator, ns_from_origin, &can_seek);
1686 if (status != BT_FUNC_STATUS_OK) {
1687 can_seek = BT_FALSE;
1688 }
1689
1690 return can_seek;
1691}
5b7b55be 1692
d24d5663 1693enum bt_message_iterator_seek_ns_from_origin_status
7474e7d3
PP
1694bt_self_component_port_input_message_iterator_seek_ns_from_origin(
1695 struct bt_self_component_port_input_message_iterator *iterator,
1696 int64_t ns_from_origin)
1697{
1698 int status;
5b7b55be 1699 GHashTable *stream_states = NULL;
c0e46a7c 1700 bt_bool can_seek_by_itself;
7474e7d3
PP
1701
1702 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
1703 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
5badd463
PP
1704 BT_ASSERT_PRE(
1705 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
1706 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
7474e7d3
PP
1707 "Graph is not configured: %!+g",
1708 bt_component_borrow_graph(iterator->upstream_component));
c0e46a7c 1709 /* The iterator must be able to seek ns from origin one way or another. */
7474e7d3 1710 BT_ASSERT_PRE(
f2fb1b32 1711 message_iterator_can_seek_ns_from_origin(iterator, ns_from_origin),
7474e7d3
PP
1712 "Message iterator cannot seek nanoseconds from origin: %!+i, "
1713 "ns-from-origin=%" PRId64, iterator, ns_from_origin);
1714 set_self_comp_port_input_msg_iterator_state(iterator,
1715 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_SEEKING);
1716
54b135a0
SM
1717 /*
1718 * We are seeking, reset our expectations about how the following
1719 * messages should look like.
1720 */
1721 reset_iterator_expectations(iterator);
1722
c0e46a7c
SM
1723 /* Check if the iterator can seek by itself. If not we'll use autoseek. */
1724 if (iterator->methods.can_seek_ns_from_origin) {
1725 bt_component_class_message_iterator_can_seek_ns_from_origin_method_status
1726 can_seek_status;
1727
1728 can_seek_status =
1729 iterator->methods.can_seek_ns_from_origin(
1730 iterator, ns_from_origin, &can_seek_by_itself);
1731 if (can_seek_status != BT_FUNC_STATUS_OK) {
1732 status = can_seek_status;
1733 goto end;
1734 }
1735 } else {
1736 can_seek_by_itself = false;
1737 }
1738
1739 if (can_seek_by_itself) {
5b7b55be 1740 /* The iterator knows how to seek to a particular time, let it handle this. */
2e1b5615 1741 BT_ASSERT(iterator->methods.seek_ns_from_origin);
7474e7d3
PP
1742 BT_LIB_LOGD("Calling user's \"seek nanoseconds from origin\" method: "
1743 "%![iter-]+i, ns=%" PRId64, iterator, ns_from_origin);
1744 status = iterator->methods.seek_ns_from_origin(iterator,
1745 ns_from_origin);
1746 BT_LOGD("User method returned: status=%s",
d24d5663
PP
1747 bt_common_func_status_string(status));
1748 BT_ASSERT_POST(status == BT_FUNC_STATUS_OK ||
1749 status == BT_FUNC_STATUS_ERROR ||
1750 status == BT_FUNC_STATUS_MEMORY_ERROR ||
1751 status == BT_FUNC_STATUS_AGAIN,
7474e7d3 1752 "Unexpected status: %![iter-]+i, status=%s",
d24d5663 1753 iterator, bt_common_func_status_string(status));
870631a2
PP
1754 if (status < 0) {
1755 BT_LIB_LOGW_APPEND_CAUSE(
1756 "Component input port message iterator's \"seek nanoseconds from origin\" method failed: "
1757 "%![iter-]+i, status=%s",
1758 iterator, bt_common_func_status_string(status));
1759 }
7474e7d3 1760 } else {
5b7b55be 1761 /*
c0e46a7c
SM
1762 * The iterator doesn't know how to seek by itself to a
1763 * particular time. We will seek to the beginning and fast
1764 * forward to the right place.
5b7b55be 1765 */
f2fb1b32
SM
1766 enum bt_component_class_message_iterator_can_seek_beginning_method_status
1767 can_seek_status;
1768 bt_bool can_seek_beginning;
1769
1770 can_seek_status = iterator->methods.can_seek_beginning(iterator,
1771 &can_seek_beginning);
1772 BT_ASSERT(can_seek_status == BT_FUNC_STATUS_OK);
1773 BT_ASSERT(can_seek_beginning);
7474e7d3
PP
1774 BT_ASSERT(iterator->methods.seek_beginning);
1775 BT_LIB_LOGD("Calling user's \"seek beginning\" method: %!+i",
1776 iterator);
1777 status = iterator->methods.seek_beginning(iterator);
1778 BT_LOGD("User method returned: status=%s",
d24d5663
PP
1779 bt_common_func_status_string(status));
1780 BT_ASSERT_POST(status == BT_FUNC_STATUS_OK ||
1781 status == BT_FUNC_STATUS_ERROR ||
1782 status == BT_FUNC_STATUS_MEMORY_ERROR ||
1783 status == BT_FUNC_STATUS_AGAIN,
7474e7d3 1784 "Unexpected status: %![iter-]+i, status=%s",
d24d5663 1785 iterator, bt_common_func_status_string(status));
870631a2
PP
1786 if (status < 0) {
1787 BT_LIB_LOGW_APPEND_CAUSE(
1788 "Component input port message iterator's \"seek beginning\" method failed: "
1789 "%![iter-]+i, status=%s",
1790 iterator, bt_common_func_status_string(status));
1791 }
1792
7474e7d3 1793 switch (status) {
d24d5663 1794 case BT_FUNC_STATUS_OK:
7474e7d3 1795 break;
d24d5663
PP
1796 case BT_FUNC_STATUS_ERROR:
1797 case BT_FUNC_STATUS_MEMORY_ERROR:
1798 case BT_FUNC_STATUS_AGAIN:
7474e7d3
PP
1799 goto end;
1800 default:
1801 abort();
1802 }
1803
1804 /*
1805 * Find the first message which has a default clock
1806 * snapshot greater than or equal to the requested
5b9e151d
PP
1807 * seeking time, and move the received messages from
1808 * this point in the batch to this iterator's auto-seek
1809 * message queue.
7474e7d3 1810 */
da9c4c52 1811 while (!g_queue_is_empty(iterator->auto_seek.msgs)) {
6871026b 1812 bt_object_put_ref_no_null_check(
da9c4c52 1813 g_queue_pop_tail(iterator->auto_seek.msgs));
5b9e151d
PP
1814 }
1815
5b7b55be
SM
1816 stream_states = create_auto_seek_stream_states();
1817 if (!stream_states) {
870631a2
PP
1818 BT_LIB_LOGE_APPEND_CAUSE(
1819 "Failed to allocate one GHashTable.");
d24d5663 1820 status = BT_FUNC_STATUS_MEMORY_ERROR;
5b7b55be
SM
1821 goto end;
1822 }
1823
7474e7d3 1824 status = find_message_ge_ns_from_origin(iterator,
5b7b55be 1825 ns_from_origin, stream_states);
7474e7d3 1826 switch (status) {
d24d5663
PP
1827 case BT_FUNC_STATUS_OK:
1828 case BT_FUNC_STATUS_END:
5b7b55be
SM
1829 {
1830 GHashTableIter iter;
1831 gpointer key, value;
1832
1833 /*
1834 * If some streams exist at the seek time, prepend the
1835 * required messages to put those streams in the right
1836 * state.
1837 */
1838 g_hash_table_iter_init(&iter, stream_states);
1839 while (g_hash_table_iter_next (&iter, &key, &value)) {
1840 const bt_stream *stream = key;
1841 struct auto_seek_stream_state *stream_state =
1842 (struct auto_seek_stream_state *) value;
1843 bt_message *msg;
1844 const bt_clock_class *clock_class = bt_stream_class_borrow_default_clock_class_const(
1845 bt_stream_borrow_class_const(stream));
188edac1
SM
1846 /* Initialize to silence maybe-uninitialized warning. */
1847 uint64_t raw_value = 0;
1848
1849 /*
1850 * If we haven't seen a message with a clock snapshot, we don't know if our seek time is within
1851 * the clock's range, so it wouldn't be safe to try to convert ns_from_origin to a clock value.
1852 *
1853 * Also, it would be a bit of a lie to generate a stream begin message with the seek time as its
1854 * clock snapshot, because we don't really know if the stream existed at that time. If we have
1855 * seen a message with a clock snapshot in our seeking, then we are sure that the
1856 * seek time is not below the clock range, and we know the stream was active at that
1857 * time (and that we cut it short).
1858 */
1859 if (stream_state->seen_clock_snapshot) {
1860 if (clock_raw_value_from_ns_from_origin(clock_class, ns_from_origin, &raw_value) != 0) {
1861 BT_LIB_LOGW("Could not convert nanoseconds from origin to clock value: ns-from-origin=%" PRId64 ", %![cc-]+K",
1862 ns_from_origin, clock_class);
1863 status = BT_FUNC_STATUS_ERROR;
1864 goto end;
1865 }
5b7b55be
SM
1866 }
1867
1868 switch (stream_state->state) {
1869 case AUTO_SEEK_STREAM_STATE_PACKET_BEGAN:
1870 BT_ASSERT(stream_state->packet);
1871 BT_LIB_LOGD("Creating packet message: %![packet-]+a", stream_state->packet);
188edac1
SM
1872
1873 if (stream->class->packets_have_beginning_default_clock_snapshot) {
1874 /*
1875 * If we are in the PACKET_BEGAN state, it means we have seen a "packet beginning"
1876 * message. If "packet beginning" packets have clock snapshots, then we must have
1877 * seen a clock snapshot.
1878 */
1879 BT_ASSERT(stream_state->seen_clock_snapshot);
1880
1881 msg = bt_message_packet_beginning_create_with_default_clock_snapshot(
1882 (bt_self_message_iterator *) iterator, stream_state->packet, raw_value);
1883 } else {
1884 msg = bt_message_packet_beginning_create((bt_self_message_iterator *) iterator,
1885 stream_state->packet);
5b7b55be
SM
1886 }
1887
5b7b55be 1888 if (!msg) {
d24d5663 1889 status = BT_FUNC_STATUS_MEMORY_ERROR;
5b7b55be
SM
1890 goto end;
1891 }
1892
5b7b55be
SM
1893 g_queue_push_head(iterator->auto_seek.msgs, msg);
1894 msg = NULL;
1895 /* fall-thru */
188edac1 1896
5b7b55be
SM
1897 case AUTO_SEEK_STREAM_STATE_STREAM_BEGAN:
1898 msg = bt_message_stream_beginning_create(
1899 (bt_self_message_iterator *) iterator, stream);
1900 if (!msg) {
d24d5663 1901 status = BT_FUNC_STATUS_MEMORY_ERROR;
5b7b55be
SM
1902 goto end;
1903 }
1904
188edac1
SM
1905 if (stream_state->seen_clock_snapshot) {
1906 bt_message_stream_beginning_set_default_clock_snapshot(msg, raw_value);
1907 }
1908
5b7b55be
SM
1909 g_queue_push_head(iterator->auto_seek.msgs, msg);
1910 msg = NULL;
1911 break;
1912 }
1913 }
1914
7474e7d3 1915 /*
5b9e151d
PP
1916 * If there are messages in the auto-seek
1917 * message queue, replace the user's "next"
1918 * method with a custom, temporary "next" method
1919 * which returns them.
7474e7d3 1920 */
da9c4c52 1921 if (!g_queue_is_empty(iterator->auto_seek.msgs)) {
572075a8
SM
1922 BT_ASSERT(!iterator->auto_seek.original_next_callback);
1923 iterator->auto_seek.original_next_callback = iterator->methods.next;
1924
5b9e151d
PP
1925 iterator->methods.next =
1926 (bt_self_component_port_input_message_iterator_next_method)
1927 post_auto_seek_next;
1928 }
1929
1930 /*
d24d5663
PP
1931 * `BT_FUNC_STATUS_END` becomes
1932 * `BT_FUNC_STATUS_OK`: the next
5b9e151d
PP
1933 * time this iterator's "next" method is called,
1934 * it will return
d24d5663 1935 * `BT_FUNC_STATUS_END`.
5b9e151d 1936 */
d24d5663 1937 status = BT_FUNC_STATUS_OK;
7474e7d3 1938 break;
5b7b55be 1939 }
d24d5663
PP
1940 case BT_FUNC_STATUS_ERROR:
1941 case BT_FUNC_STATUS_MEMORY_ERROR:
1942 case BT_FUNC_STATUS_AGAIN:
7474e7d3 1943 goto end;
7474e7d3
PP
1944 default:
1945 abort();
1946 }
1947 }
1948
54b135a0
SM
1949 /*
1950 * The following messages returned by the next method (including
1951 * post_auto_seek_next) must be after (or at) `ns_from_origin`.
1952 */
1953 iterator->last_ns_from_origin = ns_from_origin;
1954
7474e7d3 1955end:
5b7b55be
SM
1956 if (stream_states) {
1957 destroy_auto_seek_stream_states(stream_states);
1958 stream_states = NULL;
1959 }
870631a2 1960
7474e7d3 1961 set_iterator_state_after_seeking(iterator, status);
7474e7d3
PP
1962 return status;
1963}
1964
9b4f9b42
PP
1965bt_bool bt_self_message_iterator_is_interrupted(
1966 const struct bt_self_message_iterator *self_msg_iter)
1967{
1968 const struct bt_self_component_port_input_message_iterator *iterator =
1969 (const void *) self_msg_iter;
1970
1971 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
1972 return (bt_bool) bt_graph_is_interrupted(iterator->graph);
1973}
1974
d6e69534
PP
1975void bt_self_component_port_input_message_iterator_get_ref(
1976 const struct bt_self_component_port_input_message_iterator *iterator)
c5b9b441
PP
1977{
1978 bt_object_get_ref(iterator);
1979}
1980
d6e69534
PP
1981void bt_self_component_port_input_message_iterator_put_ref(
1982 const struct bt_self_component_port_input_message_iterator *iterator)
c5b9b441
PP
1983{
1984 bt_object_put_ref(iterator);
1985}
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