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e98a2d6e PP |
1 | /* |
2 | * Babeltrace - CTF notification iterator | |
06a626b8 | 3 | * |
e98a2d6e PP |
4 | * Copyright (c) 2015-2016 EfficiOS Inc. and Linux Foundation |
5 | * Copyright (c) 2015-2016 Philippe Proulx <pproulx@efficios.com> | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
20 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
23 | * SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include <stdint.h> | |
27 | #include <inttypes.h> | |
28 | #include <stdio.h> | |
29 | #include <stddef.h> | |
30 | #include <stdbool.h> | |
31 | #include <assert.h> | |
32 | #include <string.h> | |
33 | #include <babeltrace/ctf-ir/field-types.h> | |
34 | #include <babeltrace/ctf-ir/field-path.h> | |
35 | #include <babeltrace/ctf-ir/fields.h> | |
36 | #include <babeltrace/ctf-ir/stream-class.h> | |
37 | #include <babeltrace/ctf-ir/packet.h> | |
38 | #include <babeltrace/ctf-ir/stream.h> | |
ac0c6bdd | 39 | #include <babeltrace/ctf-ir/clock-class.h> |
e98a2d6e | 40 | #include <babeltrace/ctf-ir/event-class.h> |
b2e0c907 PP |
41 | #include <babeltrace/graph/notification-packet.h> |
42 | #include <babeltrace/graph/notification-event.h> | |
43 | #include <babeltrace/graph/notification-stream.h> | |
599faa1c | 44 | #include <babeltrace/graph/clock-class-priority-map.h> |
e98a2d6e PP |
45 | #include <babeltrace/ref.h> |
46 | #include <glib.h> | |
47 | ||
48 | #define PRINT_ERR_STREAM notit->err_stream | |
49 | #define PRINT_PREFIX "ctf-notif-iter" | |
1e649dff | 50 | #include "../print.h" |
e98a2d6e | 51 | |
06a626b8 JG |
52 | #include "notif-iter.h" |
53 | #include "../btr/btr.h" | |
e98a2d6e PP |
54 | |
55 | #define BYTES_TO_BITS(x) ((x) * 8) | |
56 | ||
57 | struct bt_ctf_notif_iter; | |
58 | ||
59 | /* A visit stack entry */ | |
60 | struct stack_entry { | |
61 | /* | |
62 | * Current base field, one of: | |
63 | * | |
64 | * * string | |
65 | * * structure | |
66 | * * array | |
67 | * * sequence | |
68 | * * variant | |
69 | * | |
70 | * Field is owned by this. | |
71 | */ | |
72 | struct bt_ctf_field *base; | |
73 | ||
74 | /* index of next field to set */ | |
75 | size_t index; | |
76 | }; | |
77 | ||
78 | /* Visit stack */ | |
79 | struct stack { | |
80 | /* Entries (struct stack_entry *) (top is last element) */ | |
81 | GPtrArray *entries; | |
e98a2d6e PP |
82 | }; |
83 | ||
84 | /* State */ | |
85 | enum state { | |
86 | STATE_INIT, | |
87 | STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN, | |
88 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
89 | STATE_AFTER_TRACE_PACKET_HEADER, | |
90 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN, | |
91 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
92 | STATE_AFTER_STREAM_PACKET_CONTEXT, | |
93 | STATE_EMIT_NOTIF_NEW_PACKET, | |
94 | STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN, | |
95 | STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE, | |
96 | STATE_AFTER_STREAM_EVENT_HEADER, | |
97 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN, | |
98 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE, | |
99 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN, | |
100 | STATE_DSCOPE_EVENT_CONTEXT_CONTINUE, | |
101 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, | |
102 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
103 | STATE_EMIT_NOTIF_EVENT, | |
104 | STATE_EMIT_NOTIF_END_OF_PACKET, | |
105 | STATE_SKIP_PACKET_PADDING, | |
106 | }; | |
107 | ||
5f870343 JG |
108 | struct trace_field_path_cache { |
109 | /* | |
110 | * Indexes of the stream_id and stream_instance_id field in the packet | |
111 | * header structure, -1 if unset. | |
112 | */ | |
113 | int stream_id; | |
114 | int stream_instance_id; | |
115 | }; | |
116 | ||
117 | struct stream_class_field_path_cache { | |
118 | /* | |
119 | * Indexes of the v and id fields in the stream event header structure, | |
120 | * -1 if unset. | |
121 | */ | |
122 | int v; | |
123 | int id; | |
124 | ||
125 | /* | |
126 | * index of the timestamp_end, packet_size and content_size fields in | |
127 | * the stream packet context structure. Set to -1 if the fields were | |
128 | * not found. | |
129 | */ | |
130 | int timestamp_end; | |
131 | int packet_size; | |
132 | int content_size; | |
133 | }; | |
134 | ||
135 | struct field_cb_override { | |
136 | enum bt_ctf_btr_status (* func)(void *value, | |
137 | struct bt_ctf_field_type *type, void *data); | |
138 | void *data; | |
139 | }; | |
140 | ||
e98a2d6e PP |
141 | /* CTF notification iterator */ |
142 | struct bt_ctf_notif_iter { | |
143 | /* Visit stack */ | |
144 | struct stack *stack; | |
145 | ||
146 | /* Error stream (may be NULL) */ | |
147 | FILE *err_stream; | |
148 | ||
149 | /* | |
150 | * Current dynamic scope field pointer. | |
151 | * | |
152 | * This is set when a dynamic scope field is first created by | |
153 | * btr_compound_begin_cb(). It points to one of the fields in | |
154 | * dscopes below. | |
155 | */ | |
156 | struct bt_ctf_field **cur_dscope_field; | |
157 | ||
158 | /* Trace and classes (owned by this) */ | |
159 | struct { | |
160 | struct bt_ctf_trace *trace; | |
161 | struct bt_ctf_stream_class *stream_class; | |
162 | struct bt_ctf_event_class *event_class; | |
163 | } meta; | |
164 | ||
599faa1c PP |
165 | /* Clock class priority map (owned by this) */ |
166 | struct bt_clock_class_priority_map *cc_prio_map; | |
167 | ||
e98a2d6e PP |
168 | /* Current packet (NULL if not created yet) */ |
169 | struct bt_ctf_packet *packet; | |
170 | ||
5f870343 JG |
171 | /* |
172 | * Current timestamp_end field (to consider before switching packets). | |
173 | */ | |
174 | struct bt_ctf_field *cur_timestamp_end; | |
175 | ||
e98a2d6e PP |
176 | /* Database of current dynamic scopes (owned by this) */ |
177 | struct { | |
178 | struct bt_ctf_field *trace_packet_header; | |
179 | struct bt_ctf_field *stream_packet_context; | |
180 | struct bt_ctf_field *stream_event_header; | |
181 | struct bt_ctf_field *stream_event_context; | |
182 | struct bt_ctf_field *event_context; | |
183 | struct bt_ctf_field *event_payload; | |
184 | } dscopes; | |
185 | ||
5f870343 JG |
186 | /* |
187 | * Special field overrides. | |
188 | * | |
189 | * Overrides are used to implement the behaviours of special fields such | |
190 | * as "timestamp_end" (which must be ignored until the end of the | |
191 | * packet), "id" (event id) which can be present multiple times and must | |
192 | * be updated multiple time. | |
193 | * | |
194 | * This should be used to implement the behaviour of integer fields | |
195 | * mapped to clocks and other "tagged" fields (in CTF 2). | |
196 | * | |
197 | * bt_ctf_field_type to struct field_cb_override | |
198 | */ | |
199 | GHashTable *field_overrides; | |
200 | ||
e98a2d6e PP |
201 | /* Current state */ |
202 | enum state state; | |
203 | ||
2cf1d51e | 204 | /* Current medium buffer data */ |
e98a2d6e PP |
205 | struct { |
206 | /* Last address provided by medium */ | |
207 | const uint8_t *addr; | |
208 | ||
209 | /* Buffer size provided by medium (bytes) */ | |
210 | size_t sz; | |
211 | ||
212 | /* Offset within whole packet of addr (bits) */ | |
213 | size_t packet_offset; | |
214 | ||
215 | /* Current position from addr (bits) */ | |
216 | size_t at; | |
217 | } buf; | |
218 | ||
219 | /* Binary type reader */ | |
220 | struct bt_ctf_btr *btr; | |
221 | ||
2cf1d51e | 222 | /* Current medium data */ |
e98a2d6e PP |
223 | struct { |
224 | struct bt_ctf_notif_iter_medium_ops medops; | |
225 | size_t max_request_sz; | |
226 | void *data; | |
227 | } medium; | |
228 | ||
229 | /* Current packet size (bits) (-1 if unknown) */ | |
e7a4393b | 230 | int64_t cur_packet_size; |
e98a2d6e PP |
231 | |
232 | /* Current content size (bits) (-1 if unknown) */ | |
e7a4393b | 233 | int64_t cur_content_size; |
c44c3e70 | 234 | |
ac0c6bdd | 235 | /* bt_ctf_clock_class to uint64_t. */ |
c44c3e70 | 236 | GHashTable *clock_states; |
5f870343 JG |
237 | |
238 | /* | |
239 | * Cache of the trace-constant field paths (event header type) | |
240 | * associated to the current trace. | |
241 | */ | |
242 | struct trace_field_path_cache trace_field_path_cache; | |
243 | ||
244 | /* | |
245 | * Field path cache associated with the current stream class. | |
246 | * Ownership of this structure belongs to the field_path_caches HT. | |
247 | */ | |
248 | struct stream_class_field_path_cache *cur_sc_field_path_cache; | |
249 | ||
250 | /* bt_ctf_stream_class to struct stream_class_field_path_cache. */ | |
251 | GHashTable *sc_field_path_caches; | |
e98a2d6e PP |
252 | }; |
253 | ||
2cf1d51e JG |
254 | static |
255 | int bt_ctf_notif_iter_switch_packet(struct bt_ctf_notif_iter *notit); | |
256 | ||
5f870343 JG |
257 | static |
258 | enum bt_ctf_btr_status btr_timestamp_end_cb(void *value, | |
259 | struct bt_ctf_field_type *type, void *data); | |
260 | ||
e98a2d6e PP |
261 | static |
262 | void stack_entry_free_func(gpointer data) | |
263 | { | |
264 | struct stack_entry *entry = data; | |
265 | ||
266 | bt_put(entry->base); | |
267 | g_free(entry); | |
268 | } | |
269 | ||
270 | static | |
271 | struct stack *stack_new(struct bt_ctf_notif_iter *notit) | |
272 | { | |
273 | struct stack *stack = NULL; | |
274 | ||
275 | stack = g_new0(struct stack, 1); | |
276 | if (!stack) { | |
277 | goto error; | |
278 | } | |
279 | ||
280 | stack->entries = g_ptr_array_new_with_free_func(stack_entry_free_func); | |
281 | if (!stack->entries) { | |
282 | goto error; | |
283 | } | |
284 | ||
e98a2d6e | 285 | return stack; |
e98a2d6e PP |
286 | error: |
287 | g_free(stack); | |
e98a2d6e PP |
288 | return NULL; |
289 | } | |
290 | ||
291 | static | |
292 | void stack_destroy(struct stack *stack) | |
293 | { | |
294 | assert(stack); | |
295 | g_ptr_array_free(stack->entries, TRUE); | |
296 | g_free(stack); | |
297 | } | |
298 | ||
299 | static | |
300 | int stack_push(struct stack *stack, struct bt_ctf_field *base) | |
301 | { | |
302 | int ret = 0; | |
303 | struct stack_entry *entry; | |
e98a2d6e PP |
304 | |
305 | assert(stack); | |
306 | assert(base); | |
e98a2d6e PP |
307 | entry = g_new0(struct stack_entry, 1); |
308 | if (!entry) { | |
e98a2d6e PP |
309 | ret = -1; |
310 | goto end; | |
311 | } | |
312 | ||
313 | entry->base = bt_get(base); | |
314 | g_ptr_array_add(stack->entries, entry); | |
315 | ||
316 | end: | |
317 | return ret; | |
318 | } | |
319 | ||
320 | static inline | |
321 | unsigned int stack_size(struct stack *stack) | |
322 | { | |
323 | assert(stack); | |
324 | ||
325 | return stack->entries->len; | |
326 | } | |
327 | ||
328 | static | |
329 | void stack_pop(struct stack *stack) | |
330 | { | |
331 | assert(stack); | |
332 | assert(stack_size(stack)); | |
333 | g_ptr_array_remove_index(stack->entries, stack->entries->len - 1); | |
334 | } | |
335 | ||
336 | static inline | |
337 | struct stack_entry *stack_top(struct stack *stack) | |
338 | { | |
339 | assert(stack); | |
340 | assert(stack_size(stack)); | |
341 | ||
342 | return g_ptr_array_index(stack->entries, stack->entries->len - 1); | |
343 | } | |
344 | ||
345 | static inline | |
346 | bool stack_empty(struct stack *stack) | |
347 | { | |
348 | return stack_size(stack) == 0; | |
349 | } | |
350 | ||
351 | static | |
352 | void stack_clear(struct stack *stack) | |
353 | { | |
354 | assert(stack); | |
355 | ||
356 | if (!stack_empty(stack)) { | |
357 | g_ptr_array_remove_range(stack->entries, 0, stack_size(stack)); | |
358 | } | |
359 | ||
360 | assert(stack_empty(stack)); | |
361 | } | |
362 | ||
363 | static inline | |
364 | enum bt_ctf_notif_iter_status notif_iter_status_from_m_status( | |
365 | enum bt_ctf_notif_iter_medium_status m_status) | |
366 | { | |
367 | return m_status; | |
368 | } | |
369 | ||
370 | static inline | |
371 | size_t buf_size_bits(struct bt_ctf_notif_iter *notit) | |
372 | { | |
373 | return BYTES_TO_BITS(notit->buf.sz); | |
374 | } | |
375 | ||
376 | static inline | |
377 | size_t buf_available_bits(struct bt_ctf_notif_iter *notit) | |
378 | { | |
379 | return buf_size_bits(notit) - notit->buf.at; | |
380 | } | |
381 | ||
382 | static inline | |
383 | size_t packet_at(struct bt_ctf_notif_iter *notit) | |
384 | { | |
385 | return notit->buf.packet_offset + notit->buf.at; | |
386 | } | |
387 | ||
388 | static inline | |
389 | size_t remaining_content_bits(struct bt_ctf_notif_iter *notit) | |
390 | { | |
391 | if (notit->cur_content_size == -1) { | |
392 | return -1; | |
393 | } | |
394 | ||
395 | return notit->cur_content_size - packet_at(notit); | |
396 | } | |
397 | ||
398 | static inline | |
399 | size_t remaining_packet_bits(struct bt_ctf_notif_iter *notit) | |
400 | { | |
401 | if (notit->cur_packet_size == -1) { | |
402 | return -1; | |
403 | } | |
404 | ||
405 | return notit->cur_packet_size - packet_at(notit); | |
406 | } | |
407 | ||
408 | static inline | |
409 | void buf_consume_bits(struct bt_ctf_notif_iter *notit, size_t incr) | |
410 | { | |
411 | notit->buf.at += incr; | |
412 | } | |
413 | ||
414 | static inline | |
415 | bool buf_has_enough_bits(struct bt_ctf_notif_iter *notit, size_t sz) | |
416 | { | |
417 | return buf_available_bits(notit) >= sz; | |
418 | } | |
419 | ||
420 | static | |
2cf1d51e JG |
421 | enum bt_ctf_notif_iter_status request_medium_bytes( |
422 | struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
423 | { |
424 | uint8_t *buffer_addr; | |
425 | size_t buffer_sz; | |
426 | enum bt_ctf_notif_iter_medium_status m_status; | |
427 | ||
428 | m_status = notit->medium.medops.request_bytes( | |
429 | notit->medium.max_request_sz, &buffer_addr, | |
430 | &buffer_sz, notit->medium.data); | |
431 | if (m_status == BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK) { | |
432 | assert(buffer_sz != 0); | |
433 | ||
434 | /* New packet offset is old one + old size (in bits) */ | |
435 | notit->buf.packet_offset += buf_size_bits(notit); | |
436 | ||
437 | /* Restart at the beginning of the new medium buffer */ | |
438 | notit->buf.at = 0; | |
439 | ||
440 | /* New medium buffer size */ | |
441 | notit->buf.sz = buffer_sz; | |
442 | ||
443 | /* New medium buffer address */ | |
444 | notit->buf.addr = buffer_addr; | |
445 | } | |
446 | ||
447 | return notif_iter_status_from_m_status(m_status); | |
448 | } | |
449 | ||
450 | static inline | |
451 | enum bt_ctf_notif_iter_status buf_ensure_available_bits( | |
452 | struct bt_ctf_notif_iter *notit) | |
453 | { | |
454 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
455 | ||
456 | if (buf_available_bits(notit) == 0) { | |
457 | /* | |
458 | * This _cannot_ return BT_CTF_NOTIF_ITER_STATUS_OK | |
459 | * _and_ no bits. | |
460 | */ | |
461 | status = request_medium_bytes(notit); | |
462 | } | |
463 | ||
464 | return status; | |
465 | } | |
466 | ||
467 | static | |
468 | enum bt_ctf_notif_iter_status read_dscope_begin_state( | |
469 | struct bt_ctf_notif_iter *notit, | |
470 | struct bt_ctf_field_type *dscope_field_type, | |
471 | enum state done_state, enum state continue_state, | |
472 | struct bt_ctf_field **dscope_field) | |
473 | { | |
474 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
475 | enum bt_ctf_btr_status btr_status; | |
476 | size_t consumed_bits; | |
477 | ||
478 | status = buf_ensure_available_bits(notit); | |
479 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
480 | goto end; | |
481 | } | |
482 | ||
483 | bt_put(*dscope_field); | |
484 | notit->cur_dscope_field = dscope_field; | |
485 | consumed_bits = bt_ctf_btr_start(notit->btr, dscope_field_type, | |
486 | notit->buf.addr, notit->buf.at, packet_at(notit), | |
487 | notit->buf.sz, &btr_status); | |
488 | ||
489 | switch (btr_status) { | |
490 | case BT_CTF_BTR_STATUS_OK: | |
491 | /* type was read completely */ | |
492 | notit->state = done_state; | |
493 | break; | |
494 | case BT_CTF_BTR_STATUS_EOF: | |
495 | notit->state = continue_state; | |
496 | break; | |
497 | default: | |
498 | PERR("Binary type reader failed to start\n"); | |
499 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
500 | goto end; | |
501 | } | |
502 | ||
503 | /* Consume bits now since we know we're not in an error state */ | |
504 | buf_consume_bits(notit, consumed_bits); | |
505 | ||
506 | end: | |
507 | return status; | |
508 | } | |
509 | ||
510 | static | |
511 | enum bt_ctf_notif_iter_status read_dscope_continue_state( | |
512 | struct bt_ctf_notif_iter *notit, enum state done_state) | |
513 | { | |
514 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
515 | enum bt_ctf_btr_status btr_status; | |
516 | size_t consumed_bits; | |
517 | ||
518 | status = buf_ensure_available_bits(notit); | |
519 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
520 | goto end; | |
521 | } | |
522 | ||
523 | consumed_bits = bt_ctf_btr_continue(notit->btr, notit->buf.addr, | |
78586d8a | 524 | notit->buf.sz, &btr_status); |
e98a2d6e PP |
525 | |
526 | switch (btr_status) { | |
527 | case BT_CTF_BTR_STATUS_OK: | |
78586d8a | 528 | /* Type was read completely. */ |
e98a2d6e PP |
529 | notit->state = done_state; |
530 | break; | |
531 | case BT_CTF_BTR_STATUS_EOF: | |
78586d8a | 532 | /* Stay in this continue state. */ |
e98a2d6e PP |
533 | break; |
534 | default: | |
535 | PERR("Binary type reader failed to continue\n"); | |
536 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
537 | goto end; | |
538 | } | |
539 | ||
78586d8a | 540 | /* Consume bits now since we know we're not in an error state. */ |
e98a2d6e | 541 | buf_consume_bits(notit, consumed_bits); |
e98a2d6e PP |
542 | end: |
543 | return status; | |
544 | } | |
545 | ||
546 | static | |
547 | void put_event_dscopes(struct bt_ctf_notif_iter *notit) | |
548 | { | |
549 | BT_PUT(notit->dscopes.stream_event_header); | |
550 | BT_PUT(notit->dscopes.stream_event_context); | |
551 | BT_PUT(notit->dscopes.event_context); | |
552 | BT_PUT(notit->dscopes.event_payload); | |
553 | } | |
554 | ||
555 | static | |
556 | void put_all_dscopes(struct bt_ctf_notif_iter *notit) | |
557 | { | |
558 | BT_PUT(notit->dscopes.trace_packet_header); | |
559 | BT_PUT(notit->dscopes.stream_packet_context); | |
560 | put_event_dscopes(notit); | |
561 | } | |
562 | ||
563 | static | |
564 | enum bt_ctf_notif_iter_status read_packet_header_begin_state( | |
565 | struct bt_ctf_notif_iter *notit) | |
566 | { | |
2cf1d51e JG |
567 | struct bt_ctf_field_type *packet_header_type = NULL; |
568 | enum bt_ctf_notif_iter_status ret = BT_CTF_NOTIF_ITER_STATUS_OK; | |
e98a2d6e | 569 | |
2cf1d51e JG |
570 | if (bt_ctf_notif_iter_switch_packet(notit)) { |
571 | ret = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
572 | goto end; | |
573 | } | |
e98a2d6e | 574 | |
2cf1d51e | 575 | /* Packet header type is common to the whole trace. */ |
e98a2d6e | 576 | packet_header_type = bt_ctf_trace_get_packet_header_type( |
78586d8a | 577 | notit->meta.trace); |
e98a2d6e | 578 | if (!packet_header_type) { |
835b2d10 | 579 | notit->state = STATE_AFTER_TRACE_PACKET_HEADER; |
e98a2d6e PP |
580 | goto end; |
581 | } | |
582 | ||
2cf1d51e | 583 | ret = read_dscope_begin_state(notit, packet_header_type, |
78586d8a JG |
584 | STATE_AFTER_TRACE_PACKET_HEADER, |
585 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
586 | ¬it->dscopes.trace_packet_header); | |
e98a2d6e PP |
587 | end: |
588 | BT_PUT(packet_header_type); | |
2cf1d51e | 589 | return ret; |
e98a2d6e PP |
590 | } |
591 | ||
592 | static | |
593 | enum bt_ctf_notif_iter_status read_packet_header_continue_state( | |
594 | struct bt_ctf_notif_iter *notit) | |
595 | { | |
596 | return read_dscope_continue_state(notit, | |
78586d8a | 597 | STATE_AFTER_TRACE_PACKET_HEADER); |
e98a2d6e PP |
598 | } |
599 | ||
600 | static inline | |
601 | bool is_struct_type(struct bt_ctf_field_type *field_type) | |
602 | { | |
78586d8a | 603 | return bt_ctf_field_type_get_type_id(field_type) == |
1487a16a | 604 | BT_CTF_FIELD_TYPE_ID_STRUCT; |
e98a2d6e PP |
605 | } |
606 | ||
607 | static inline | |
608 | bool is_variant_type(struct bt_ctf_field_type *field_type) | |
609 | { | |
78586d8a | 610 | return bt_ctf_field_type_get_type_id(field_type) == |
1487a16a | 611 | BT_CTF_FIELD_TYPE_ID_VARIANT; |
e98a2d6e PP |
612 | } |
613 | ||
5f870343 JG |
614 | static |
615 | struct stream_class_field_path_cache * | |
616 | create_stream_class_field_path_cache_entry( | |
617 | struct bt_ctf_notif_iter *notit, | |
618 | struct bt_ctf_stream_class *stream_class) | |
619 | { | |
620 | int v = -1; | |
621 | int id = -1; | |
622 | int timestamp_end = -1; | |
623 | int packet_size = -1; | |
624 | int content_size = -1; | |
625 | struct stream_class_field_path_cache *cache_entry = g_new0( | |
626 | struct stream_class_field_path_cache, 1); | |
627 | struct bt_ctf_field_type *event_header = NULL, *packet_context = NULL; | |
628 | ||
629 | if (!cache_entry) { | |
630 | goto end; | |
631 | } | |
632 | ||
633 | event_header = bt_ctf_stream_class_get_event_header_type(stream_class); | |
634 | if (event_header && bt_ctf_field_type_is_structure(event_header)) { | |
635 | int i, count; | |
636 | ||
637 | count = bt_ctf_field_type_structure_get_field_count( | |
638 | event_header); | |
639 | if (count < 0) { | |
640 | goto error; | |
641 | } | |
642 | for (i = 0; i < count; i++) { | |
643 | int ret; | |
644 | const char *name; | |
645 | ||
646 | ret = bt_ctf_field_type_structure_get_field( | |
647 | event_header, &name, NULL, i); | |
648 | if (ret) { | |
649 | goto error; | |
650 | } | |
651 | ||
652 | if (v != -1 && id != -1) { | |
653 | break; | |
654 | } | |
655 | if (v == -1 && !strcmp(name, "v")) { | |
656 | v = i; | |
657 | } else if (id == -1 && !strcmp(name, "id")) { | |
658 | id = i; | |
659 | } | |
660 | } | |
661 | } | |
662 | ||
663 | packet_context = bt_ctf_stream_class_get_packet_context_type( | |
664 | stream_class); | |
665 | if (packet_context && bt_ctf_field_type_is_structure(packet_context)) { | |
666 | int i, count; | |
667 | ||
668 | count = bt_ctf_field_type_structure_get_field_count( | |
669 | packet_context); | |
670 | if (count < 0) { | |
671 | goto error; | |
672 | } | |
673 | for (i = 0; i < count; i++) { | |
674 | int ret; | |
675 | const char *name; | |
676 | struct bt_ctf_field_type *field_type; | |
677 | ||
678 | if (timestamp_end != -1 && packet_size != -1 && | |
679 | content_size != -1) { | |
680 | break; | |
681 | } | |
682 | ||
683 | ret = bt_ctf_field_type_structure_get_field( | |
684 | packet_context, &name, &field_type, i); | |
685 | if (ret) { | |
686 | goto error; | |
687 | } | |
688 | ||
689 | if (timestamp_end == -1 && | |
690 | !strcmp(name, "timestamp_end")) { | |
691 | struct field_cb_override *override = g_new0( | |
692 | struct field_cb_override, 1); | |
693 | ||
694 | if (!override) { | |
695 | BT_PUT(field_type); | |
696 | goto error; | |
697 | } | |
698 | ||
699 | override->func = btr_timestamp_end_cb; | |
700 | override->data = notit; | |
701 | ||
702 | g_hash_table_insert(notit->field_overrides, | |
703 | bt_get(field_type), override); | |
704 | ||
705 | timestamp_end = i; | |
706 | } else if (packet_size == -1 && | |
707 | !strcmp(name, "packet_size")) { | |
708 | packet_size = i; | |
709 | } else if (content_size == -1 && | |
710 | !strcmp(name, "content_size")) { | |
711 | content_size = i; | |
712 | } | |
713 | BT_PUT(field_type); | |
714 | } | |
715 | } | |
716 | ||
717 | cache_entry->v = v; | |
718 | cache_entry->id = id; | |
719 | cache_entry->timestamp_end = timestamp_end; | |
720 | cache_entry->packet_size = packet_size; | |
721 | cache_entry->content_size = content_size; | |
722 | end: | |
723 | BT_PUT(event_header); | |
724 | BT_PUT(packet_context); | |
725 | return cache_entry; | |
726 | error: | |
727 | g_free(cache_entry); | |
728 | cache_entry = NULL; | |
729 | goto end; | |
730 | } | |
731 | ||
732 | static | |
733 | struct stream_class_field_path_cache *get_stream_class_field_path_cache( | |
734 | struct bt_ctf_notif_iter *notit, | |
735 | struct bt_ctf_stream_class *stream_class) | |
736 | { | |
737 | bool cache_entry_found; | |
738 | struct stream_class_field_path_cache *cache_entry; | |
739 | ||
740 | cache_entry_found = g_hash_table_lookup_extended( | |
741 | notit->sc_field_path_caches, | |
742 | stream_class, NULL, (gpointer) &cache_entry); | |
743 | if (unlikely(!cache_entry_found)) { | |
744 | cache_entry = create_stream_class_field_path_cache_entry(notit, | |
745 | stream_class); | |
746 | g_hash_table_insert(notit->sc_field_path_caches, | |
747 | bt_get(stream_class), (gpointer) cache_entry); | |
748 | } | |
749 | ||
750 | return cache_entry; | |
751 | } | |
752 | ||
e98a2d6e | 753 | static inline |
835b2d10 JG |
754 | enum bt_ctf_notif_iter_status set_current_stream_class( |
755 | struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
756 | { |
757 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
5f870343 | 758 | struct bt_ctf_field_type *packet_header_type = NULL; |
e98a2d6e PP |
759 | struct bt_ctf_field_type *stream_id_field_type = NULL; |
760 | uint64_t stream_id; | |
761 | ||
5f870343 JG |
762 | /* Clear the current stream class field path cache. */ |
763 | notit->cur_sc_field_path_cache = NULL; | |
764 | ||
e98a2d6e PP |
765 | /* Is there any "stream_id" field in the packet header? */ |
766 | packet_header_type = bt_ctf_trace_get_packet_header_type( | |
78586d8a | 767 | notit->meta.trace); |
e98a2d6e PP |
768 | if (!packet_header_type) { |
769 | PERR("Failed to retrieve trace's packet header type\n"); | |
770 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
771 | goto end; | |
772 | } | |
773 | ||
774 | assert(is_struct_type(packet_header_type)); | |
775 | ||
776 | // TODO: optimalize! | |
777 | stream_id_field_type = | |
78586d8a JG |
778 | bt_ctf_field_type_structure_get_field_type_by_name( |
779 | packet_header_type, "stream_id"); | |
e98a2d6e PP |
780 | if (stream_id_field_type) { |
781 | /* Find appropriate stream class using current stream ID */ | |
e98a2d6e | 782 | int ret; |
5f870343 | 783 | struct bt_ctf_field *stream_id_field = NULL; |
e98a2d6e PP |
784 | |
785 | assert(notit->dscopes.trace_packet_header); | |
786 | ||
787 | // TODO: optimalize! | |
788 | stream_id_field = bt_ctf_field_structure_get_field( | |
78586d8a | 789 | notit->dscopes.trace_packet_header, "stream_id"); |
e98a2d6e PP |
790 | assert(stream_id_field); |
791 | ret = bt_ctf_field_unsigned_integer_get_value( | |
78586d8a | 792 | stream_id_field, &stream_id); |
e98a2d6e PP |
793 | assert(!ret); |
794 | BT_PUT(stream_id_field); | |
795 | } else { | |
796 | /* Only one stream: pick the first stream class */ | |
797 | assert(bt_ctf_trace_get_stream_class_count( | |
78586d8a | 798 | notit->meta.trace) == 1); |
e98a2d6e PP |
799 | stream_id = 0; |
800 | } | |
801 | ||
802 | BT_PUT(notit->meta.stream_class); | |
5b29e799 | 803 | notit->meta.stream_class = bt_ctf_trace_get_stream_class_by_id( |
78586d8a | 804 | notit->meta.trace, stream_id); |
e98a2d6e PP |
805 | if (!notit->meta.stream_class) { |
806 | PERR("Cannot find stream class with ID %" PRIu64 "\n", | |
807 | stream_id); | |
808 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
809 | goto end; | |
810 | } | |
811 | ||
5f870343 JG |
812 | /* |
813 | * Retrieve (or lazily create) the current stream class field path | |
814 | * cache. | |
815 | */ | |
816 | notit->cur_sc_field_path_cache = get_stream_class_field_path_cache( | |
817 | notit, notit->meta.stream_class); | |
818 | if (!notit->cur_sc_field_path_cache) { | |
819 | PERR("Failed to retrieve stream class field path cache\n"); | |
820 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
821 | goto end; | |
822 | } | |
e98a2d6e PP |
823 | end: |
824 | BT_PUT(packet_header_type); | |
825 | BT_PUT(stream_id_field_type); | |
826 | ||
827 | return status; | |
828 | } | |
829 | ||
830 | static | |
831 | enum bt_ctf_notif_iter_status after_packet_header_state( | |
832 | struct bt_ctf_notif_iter *notit) | |
833 | { | |
834 | enum bt_ctf_notif_iter_status status; | |
835 | ||
836 | status = set_current_stream_class(notit); | |
837 | if (status == BT_CTF_NOTIF_ITER_STATUS_OK) { | |
838 | notit->state = STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN; | |
839 | } | |
840 | ||
841 | return status; | |
842 | } | |
843 | ||
844 | static | |
845 | enum bt_ctf_notif_iter_status read_packet_context_begin_state( | |
846 | struct bt_ctf_notif_iter *notit) | |
847 | { | |
848 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
849 | struct bt_ctf_field_type *packet_context_type; | |
850 | ||
851 | assert(notit->meta.stream_class); | |
852 | packet_context_type = bt_ctf_stream_class_get_packet_context_type( | |
78586d8a | 853 | notit->meta.stream_class); |
e98a2d6e | 854 | if (!packet_context_type) { |
835b2d10 | 855 | notit->state = STATE_AFTER_STREAM_PACKET_CONTEXT; |
e98a2d6e PP |
856 | goto end; |
857 | } | |
858 | ||
859 | status = read_dscope_begin_state(notit, packet_context_type, | |
78586d8a JG |
860 | STATE_AFTER_STREAM_PACKET_CONTEXT, |
861 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
862 | ¬it->dscopes.stream_packet_context); | |
e98a2d6e PP |
863 | |
864 | end: | |
865 | BT_PUT(packet_context_type); | |
e98a2d6e PP |
866 | return status; |
867 | } | |
868 | ||
869 | static | |
870 | enum bt_ctf_notif_iter_status read_packet_context_continue_state( | |
871 | struct bt_ctf_notif_iter *notit) | |
872 | { | |
873 | return read_dscope_continue_state(notit, | |
78586d8a | 874 | STATE_AFTER_STREAM_PACKET_CONTEXT); |
e98a2d6e PP |
875 | } |
876 | ||
78586d8a | 877 | static |
e98a2d6e PP |
878 | enum bt_ctf_notif_iter_status set_current_packet_content_sizes( |
879 | struct bt_ctf_notif_iter *notit) | |
880 | { | |
881 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
882 | struct bt_ctf_field *packet_size_field = NULL; | |
883 | struct bt_ctf_field *content_size_field = NULL; | |
884 | uint64_t content_size = -1, packet_size = -1; | |
885 | ||
886 | assert(notit->dscopes.stream_packet_context); | |
887 | ||
e98a2d6e | 888 | packet_size_field = bt_ctf_field_structure_get_field( |
78586d8a | 889 | notit->dscopes.stream_packet_context, "packet_size"); |
e98a2d6e | 890 | content_size_field = bt_ctf_field_structure_get_field( |
78586d8a | 891 | notit->dscopes.stream_packet_context, "content_size"); |
e98a2d6e PP |
892 | if (packet_size_field) { |
893 | int ret = bt_ctf_field_unsigned_integer_get_value( | |
78586d8a | 894 | packet_size_field, &packet_size); |
e98a2d6e | 895 | |
78586d8a | 896 | assert(!ret); |
e98a2d6e PP |
897 | if (packet_size == 0) { |
898 | PERR("Decoded packet size is 0\n"); | |
899 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
900 | goto end; | |
901 | } else if ((packet_size % 8) != 0) { | |
902 | PERR("Decoded packet size is not a multiple of 8\n"); | |
903 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
904 | goto end; | |
905 | } | |
906 | } | |
78586d8a | 907 | |
e98a2d6e PP |
908 | if (content_size_field) { |
909 | int ret = bt_ctf_field_unsigned_integer_get_value( | |
910 | content_size_field, &content_size); | |
78586d8a | 911 | |
e98a2d6e PP |
912 | assert(!ret); |
913 | } else { | |
914 | content_size = packet_size; | |
915 | } | |
916 | ||
917 | notit->cur_packet_size = packet_size; | |
918 | notit->cur_content_size = content_size; | |
e98a2d6e PP |
919 | end: |
920 | BT_PUT(packet_size_field); | |
921 | BT_PUT(content_size_field); | |
e98a2d6e PP |
922 | return status; |
923 | } | |
924 | ||
925 | static | |
926 | enum bt_ctf_notif_iter_status after_packet_context_state( | |
927 | struct bt_ctf_notif_iter *notit) | |
928 | { | |
929 | enum bt_ctf_notif_iter_status status; | |
930 | ||
931 | status = set_current_packet_content_sizes(notit); | |
932 | if (status == BT_CTF_NOTIF_ITER_STATUS_OK) { | |
933 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
934 | } | |
935 | ||
936 | return status; | |
937 | } | |
938 | ||
939 | static | |
940 | enum bt_ctf_notif_iter_status read_event_header_begin_state( | |
941 | struct bt_ctf_notif_iter *notit) | |
942 | { | |
943 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
944 | struct bt_ctf_field_type *event_header_type = NULL; | |
945 | ||
946 | /* Check if we have some content left */ | |
947 | if (notit->cur_content_size >= 0) { | |
948 | if (packet_at(notit) == notit->cur_content_size) { | |
949 | /* No more events! */ | |
950 | notit->state = STATE_EMIT_NOTIF_END_OF_PACKET; | |
951 | goto end; | |
952 | } else if (packet_at(notit) > notit->cur_content_size) { | |
953 | /* That's not supposed to happen */ | |
954 | PERR("Cursor passed packet's content size:\n"); | |
78586d8a | 955 | PERR("\tDecoded content size: %zu\n", |
e98a2d6e | 956 | notit->cur_content_size); |
78586d8a | 957 | PERR("\tCursor position: %zu\n", packet_at(notit)); |
e98a2d6e PP |
958 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; |
959 | goto end; | |
960 | } | |
961 | } | |
962 | ||
963 | event_header_type = bt_ctf_stream_class_get_event_header_type( | |
964 | notit->meta.stream_class); | |
965 | if (!event_header_type) { | |
835b2d10 | 966 | notit->state = STATE_AFTER_STREAM_EVENT_HEADER; |
e98a2d6e PP |
967 | goto end; |
968 | } | |
969 | ||
970 | put_event_dscopes(notit); | |
971 | status = read_dscope_begin_state(notit, event_header_type, | |
972 | STATE_AFTER_STREAM_EVENT_HEADER, | |
973 | STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE, | |
974 | ¬it->dscopes.stream_event_header); | |
e98a2d6e PP |
975 | end: |
976 | BT_PUT(event_header_type); | |
977 | ||
978 | return status; | |
979 | } | |
980 | ||
981 | static | |
982 | enum bt_ctf_notif_iter_status read_event_header_continue_state( | |
983 | struct bt_ctf_notif_iter *notit) | |
984 | { | |
985 | return read_dscope_continue_state(notit, | |
986 | STATE_AFTER_STREAM_EVENT_HEADER); | |
987 | } | |
988 | ||
989 | static inline | |
990 | enum bt_ctf_notif_iter_status set_current_event_class(struct bt_ctf_notif_iter *notit) | |
991 | { | |
992 | /* | |
993 | * The assert() calls in this function are okay because it is | |
994 | * assumed here that all the metadata objects have been | |
995 | * validated for CTF correctness before decoding actual streams. | |
996 | */ | |
997 | ||
998 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
999 | struct bt_ctf_field_type *event_header_type; | |
1000 | struct bt_ctf_field_type *id_field_type = NULL; | |
1001 | struct bt_ctf_field_type *v_field_type = NULL; | |
1002 | uint64_t event_id = -1ULL; | |
1003 | int ret; | |
1004 | ||
1005 | event_header_type = bt_ctf_stream_class_get_event_header_type( | |
1006 | notit->meta.stream_class); | |
1007 | if (!event_header_type) { | |
1008 | PERR("Failed to retrieve stream class's event header type\n"); | |
1009 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
1010 | goto end; | |
1011 | } | |
1012 | ||
1013 | /* Is there any "id"/"v" field in the event header? */ | |
1014 | assert(is_struct_type(event_header_type)); | |
1015 | id_field_type = bt_ctf_field_type_structure_get_field_type_by_name( | |
1016 | event_header_type, "id"); | |
1017 | v_field_type = bt_ctf_field_type_structure_get_field_type_by_name( | |
1018 | event_header_type, "v"); | |
1019 | assert(notit->dscopes.stream_event_header); | |
1020 | if (v_field_type) { | |
1021 | /* | |
1022 | * _ _____ _____ | |
1023 | * | | |_ _|_ _| __ __ _ | |
1024 | * | | | | | || '_ \ / _` | | |
1025 | * | |___| | | || | | | (_| | S P E C I A L | |
1026 | * |_____|_| |_||_| |_|\__, | C A S E ™ | |
1027 | * |___/ | |
1028 | */ | |
1029 | struct bt_ctf_field *v_field = NULL; | |
1030 | struct bt_ctf_field *v_struct_field = NULL; | |
1031 | struct bt_ctf_field *v_struct_id_field = NULL; | |
1032 | ||
1033 | // TODO: optimalize! | |
1034 | v_field = bt_ctf_field_structure_get_field( | |
1035 | notit->dscopes.stream_event_header, "v"); | |
1036 | assert(v_field); | |
1037 | ||
1038 | v_struct_field = | |
1039 | bt_ctf_field_variant_get_current_field(v_field); | |
1040 | if (!v_struct_field) { | |
1041 | goto end_v_field_type; | |
1042 | } | |
1043 | ||
1044 | // TODO: optimalize! | |
1045 | v_struct_id_field = | |
1046 | bt_ctf_field_structure_get_field(v_struct_field, "id"); | |
1047 | if (!v_struct_id_field) { | |
1048 | goto end_v_field_type; | |
1049 | } | |
1050 | ||
1051 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1052 | v_struct_id_field, &event_id); | |
1053 | if (ret) { | |
1054 | event_id = -1ULL; | |
1055 | } | |
1056 | ||
1057 | end_v_field_type: | |
1058 | BT_PUT(v_field); | |
1059 | BT_PUT(v_struct_field); | |
1060 | BT_PUT(v_struct_id_field); | |
1061 | } | |
1062 | ||
1063 | if (id_field_type && event_id == -1ULL) { | |
1064 | /* Check "id" field */ | |
1065 | struct bt_ctf_field *id_field = NULL; | |
1066 | int ret; | |
1067 | ||
1068 | // TODO: optimalize! | |
1069 | id_field = bt_ctf_field_structure_get_field( | |
1070 | notit->dscopes.stream_event_header, "id"); | |
1071 | assert(id_field); | |
1072 | assert(bt_ctf_field_is_integer(id_field) || | |
1073 | bt_ctf_field_is_enumeration(id_field)); | |
1074 | ||
1075 | if (bt_ctf_field_is_integer(id_field)) { | |
1076 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1077 | id_field, &event_id); | |
1078 | } else { | |
1079 | struct bt_ctf_field *container; | |
1080 | ||
1081 | container = bt_ctf_field_enumeration_get_container( | |
1082 | id_field); | |
1083 | assert(container); | |
1084 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1085 | container, &event_id); | |
1086 | BT_PUT(container); | |
1087 | } | |
1088 | assert(!ret); | |
1089 | BT_PUT(id_field); | |
1090 | } | |
1091 | ||
1092 | if (event_id == -1ULL) { | |
1093 | /* Event ID not found: single event? */ | |
1094 | assert(bt_ctf_stream_class_get_event_class_count( | |
1095 | notit->meta.stream_class) == 1); | |
1096 | event_id = 0; | |
1097 | } | |
1098 | ||
1099 | BT_PUT(notit->meta.event_class); | |
1100 | notit->meta.event_class = bt_ctf_stream_class_get_event_class_by_id( | |
1101 | notit->meta.stream_class, event_id); | |
1102 | if (!notit->meta.event_class) { | |
1103 | PERR("Cannot find event class with ID %" PRIu64 "\n", event_id); | |
1104 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
1105 | goto end; | |
1106 | } | |
1107 | ||
1108 | end: | |
1109 | BT_PUT(event_header_type); | |
1110 | BT_PUT(id_field_type); | |
1111 | BT_PUT(v_field_type); | |
1112 | ||
1113 | return status; | |
1114 | } | |
1115 | ||
1116 | static | |
1117 | enum bt_ctf_notif_iter_status after_event_header_state( | |
1118 | struct bt_ctf_notif_iter *notit) | |
1119 | { | |
1120 | enum bt_ctf_notif_iter_status status; | |
1121 | ||
e98a2d6e PP |
1122 | status = set_current_event_class(notit); |
1123 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
1124 | PERR("Failed to set current event class\n"); | |
1125 | goto end; | |
1126 | } | |
1127 | ||
1128 | notit->state = STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN; | |
1129 | ||
1130 | end: | |
1131 | return status; | |
1132 | } | |
1133 | ||
1134 | static | |
1135 | enum bt_ctf_notif_iter_status read_stream_event_context_begin_state( | |
1136 | struct bt_ctf_notif_iter *notit) | |
1137 | { | |
1138 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1139 | struct bt_ctf_field_type *stream_event_context_type; | |
1140 | ||
1141 | stream_event_context_type = bt_ctf_stream_class_get_event_context_type( | |
1142 | notit->meta.stream_class); | |
1143 | if (!stream_event_context_type) { | |
835b2d10 | 1144 | notit->state = STATE_DSCOPE_EVENT_CONTEXT_BEGIN; |
e98a2d6e PP |
1145 | goto end; |
1146 | } | |
1147 | ||
1148 | status = read_dscope_begin_state(notit, stream_event_context_type, | |
1149 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN, | |
1150 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE, | |
1151 | ¬it->dscopes.stream_event_context); | |
1152 | ||
1153 | end: | |
1154 | BT_PUT(stream_event_context_type); | |
1155 | ||
1156 | return status; | |
1157 | } | |
1158 | ||
1159 | static | |
1160 | enum bt_ctf_notif_iter_status read_stream_event_context_continue_state( | |
1161 | struct bt_ctf_notif_iter *notit) | |
1162 | { | |
1163 | return read_dscope_continue_state(notit, | |
1164 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN); | |
1165 | } | |
1166 | ||
1167 | static | |
1168 | enum bt_ctf_notif_iter_status read_event_context_begin_state( | |
1169 | struct bt_ctf_notif_iter *notit) | |
1170 | { | |
1171 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1172 | struct bt_ctf_field_type *event_context_type; | |
1173 | ||
1174 | event_context_type = bt_ctf_event_class_get_context_type( | |
1175 | notit->meta.event_class); | |
1176 | if (!event_context_type) { | |
835b2d10 | 1177 | notit->state = STATE_DSCOPE_EVENT_PAYLOAD_BEGIN; |
e98a2d6e PP |
1178 | goto end; |
1179 | } | |
e98a2d6e PP |
1180 | status = read_dscope_begin_state(notit, event_context_type, |
1181 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, | |
1182 | STATE_DSCOPE_EVENT_CONTEXT_CONTINUE, | |
1183 | ¬it->dscopes.event_context); | |
1184 | ||
1185 | end: | |
1186 | BT_PUT(event_context_type); | |
1187 | ||
1188 | return status; | |
1189 | } | |
1190 | ||
1191 | static | |
1192 | enum bt_ctf_notif_iter_status read_event_context_continue_state( | |
1193 | struct bt_ctf_notif_iter *notit) | |
1194 | { | |
1195 | return read_dscope_continue_state(notit, | |
1196 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN); | |
1197 | } | |
1198 | ||
1199 | static | |
1200 | enum bt_ctf_notif_iter_status read_event_payload_begin_state( | |
1201 | struct bt_ctf_notif_iter *notit) | |
1202 | { | |
1203 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1204 | struct bt_ctf_field_type *event_payload_type; | |
1205 | ||
1206 | event_payload_type = bt_ctf_event_class_get_payload_type( | |
1207 | notit->meta.event_class); | |
1208 | if (!event_payload_type) { | |
835b2d10 | 1209 | notit->state = STATE_EMIT_NOTIF_EVENT; |
e98a2d6e PP |
1210 | goto end; |
1211 | } | |
1212 | ||
1213 | status = read_dscope_begin_state(notit, event_payload_type, | |
1214 | STATE_EMIT_NOTIF_EVENT, | |
1215 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
1216 | ¬it->dscopes.event_payload); | |
1217 | ||
1218 | end: | |
1219 | BT_PUT(event_payload_type); | |
1220 | ||
1221 | return status; | |
1222 | } | |
1223 | ||
1224 | static | |
1225 | enum bt_ctf_notif_iter_status read_event_payload_continue_state( | |
1226 | struct bt_ctf_notif_iter *notit) | |
1227 | { | |
1228 | return read_dscope_continue_state(notit, STATE_EMIT_NOTIF_EVENT); | |
1229 | } | |
1230 | ||
1231 | static | |
1232 | enum bt_ctf_notif_iter_status skip_packet_padding_state( | |
1233 | struct bt_ctf_notif_iter *notit) | |
1234 | { | |
1235 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1236 | size_t bits_to_skip; | |
1237 | ||
1238 | assert(notit->cur_packet_size > 0); | |
1239 | bits_to_skip = notit->cur_packet_size - packet_at(notit); | |
1240 | if (bits_to_skip == 0) { | |
1241 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1242 | goto end; | |
1243 | } else { | |
1244 | size_t bits_to_consume; | |
1245 | status = buf_ensure_available_bits(notit); | |
1246 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
1247 | goto end; | |
1248 | } | |
1249 | ||
1250 | bits_to_consume = MIN(buf_available_bits(notit), bits_to_skip); | |
1251 | buf_consume_bits(notit, bits_to_consume); | |
1252 | bits_to_skip = notit->cur_packet_size - packet_at(notit); | |
1253 | if (bits_to_skip == 0) { | |
1254 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1255 | goto end; | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | end: | |
1260 | return status; | |
1261 | } | |
1262 | ||
1263 | static inline | |
1264 | enum bt_ctf_notif_iter_status handle_state(struct bt_ctf_notif_iter *notit) | |
1265 | { | |
1266 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1267 | ||
1268 | PDBG("Handling state %d\n", notit->state); | |
1269 | ||
1270 | // TODO: optimalize! | |
1271 | switch (notit->state) { | |
1272 | case STATE_INIT: | |
1273 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1274 | break; | |
1275 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
1276 | status = read_packet_header_begin_state(notit); | |
1277 | break; | |
1278 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
1279 | status = read_packet_header_continue_state(notit); | |
1280 | break; | |
1281 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
1282 | status = after_packet_header_state(notit); | |
1283 | break; | |
1284 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
1285 | status = read_packet_context_begin_state(notit); | |
1286 | break; | |
1287 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
1288 | status = read_packet_context_continue_state(notit); | |
1289 | break; | |
1290 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
1291 | status = after_packet_context_state(notit); | |
1292 | break; | |
1293 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
1294 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1295 | break; | |
1296 | case STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN: | |
1297 | status = read_event_header_begin_state(notit); | |
1298 | break; | |
1299 | case STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE: | |
1300 | status = read_event_header_continue_state(notit); | |
1301 | break; | |
1302 | case STATE_AFTER_STREAM_EVENT_HEADER: | |
1303 | status = after_event_header_state(notit); | |
1304 | break; | |
1305 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN: | |
1306 | status = read_stream_event_context_begin_state(notit); | |
1307 | break; | |
1308 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE: | |
1309 | status = read_stream_event_context_continue_state(notit); | |
1310 | break; | |
1311 | case STATE_DSCOPE_EVENT_CONTEXT_BEGIN: | |
1312 | status = read_event_context_begin_state(notit); | |
1313 | break; | |
1314 | case STATE_DSCOPE_EVENT_CONTEXT_CONTINUE: | |
1315 | status = read_event_context_continue_state(notit); | |
1316 | break; | |
1317 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: | |
1318 | status = read_event_payload_begin_state(notit); | |
1319 | break; | |
1320 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
1321 | status = read_event_payload_continue_state(notit); | |
1322 | break; | |
1323 | case STATE_EMIT_NOTIF_EVENT: | |
1324 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1325 | break; | |
1326 | case STATE_SKIP_PACKET_PADDING: | |
1327 | status = skip_packet_padding_state(notit); | |
1328 | break; | |
1329 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
1330 | notit->state = STATE_SKIP_PACKET_PADDING; | |
1331 | break; | |
1332 | } | |
1333 | ||
1334 | return status; | |
1335 | } | |
1336 | ||
2cf1d51e JG |
1337 | /** |
1338 | * Resets the internal state of a CTF notification iterator. | |
2cf1d51e JG |
1339 | */ |
1340 | static | |
e98a2d6e PP |
1341 | void bt_ctf_notif_iter_reset(struct bt_ctf_notif_iter *notit) |
1342 | { | |
1343 | assert(notit); | |
1344 | stack_clear(notit->stack); | |
1345 | BT_PUT(notit->meta.stream_class); | |
1346 | BT_PUT(notit->meta.event_class); | |
1347 | BT_PUT(notit->packet); | |
1348 | put_all_dscopes(notit); | |
1349 | notit->buf.addr = NULL; | |
1350 | notit->buf.sz = 0; | |
1351 | notit->buf.at = 0; | |
1352 | notit->buf.packet_offset = 0; | |
1353 | notit->state = STATE_INIT; | |
1354 | notit->cur_content_size = -1; | |
1355 | notit->cur_packet_size = -1; | |
1356 | } | |
1357 | ||
2cf1d51e JG |
1358 | static |
1359 | int bt_ctf_notif_iter_switch_packet(struct bt_ctf_notif_iter *notit) | |
1360 | { | |
1361 | int ret = 0; | |
1362 | ||
1363 | assert(notit); | |
1364 | stack_clear(notit->stack); | |
1365 | BT_PUT(notit->meta.stream_class); | |
1366 | BT_PUT(notit->meta.event_class); | |
1367 | BT_PUT(notit->packet); | |
5f870343 | 1368 | BT_PUT(notit->cur_timestamp_end); |
2cf1d51e JG |
1369 | put_all_dscopes(notit); |
1370 | ||
1371 | /* | |
1372 | * Adjust current buffer so that addr points to the beginning of the new | |
1373 | * packet. | |
1374 | */ | |
1375 | if (notit->buf.addr) { | |
1376 | size_t consumed_bytes = (size_t) (notit->buf.at / CHAR_BIT); | |
1377 | ||
1378 | /* Packets are assumed to start on a byte frontier. */ | |
1379 | if (notit->buf.at % CHAR_BIT) { | |
1380 | ret = -1; | |
1381 | goto end; | |
1382 | } | |
1383 | ||
1384 | notit->buf.addr += consumed_bytes; | |
1385 | notit->buf.sz -= consumed_bytes; | |
1386 | notit->buf.at = 0; | |
1387 | notit->buf.packet_offset = 0; | |
1388 | } | |
1389 | ||
1390 | notit->cur_content_size = -1; | |
1391 | notit->cur_packet_size = -1; | |
5f870343 | 1392 | notit->cur_sc_field_path_cache = NULL; |
2cf1d51e JG |
1393 | end: |
1394 | return ret; | |
1395 | } | |
1396 | ||
e98a2d6e PP |
1397 | static |
1398 | struct bt_ctf_field *get_next_field(struct bt_ctf_notif_iter *notit) | |
1399 | { | |
1400 | struct bt_ctf_field *next_field = NULL; | |
1401 | struct bt_ctf_field *base_field; | |
1402 | struct bt_ctf_field_type *base_type; | |
1403 | size_t index; | |
1404 | ||
1405 | assert(!stack_empty(notit->stack)); | |
1406 | index = stack_top(notit->stack)->index; | |
1407 | base_field = stack_top(notit->stack)->base; | |
1408 | base_type = bt_ctf_field_get_type(base_field); | |
1409 | if (!base_type) { | |
1410 | PERR("Failed to get base field's type\n"); | |
1411 | goto end; | |
1412 | } | |
1413 | ||
1414 | switch (bt_ctf_field_type_get_type_id(base_type)) { | |
1487a16a | 1415 | case BT_CTF_FIELD_TYPE_ID_STRUCT: |
e98a2d6e PP |
1416 | next_field = bt_ctf_field_structure_get_field_by_index( |
1417 | base_field, index); | |
1418 | break; | |
1487a16a | 1419 | case BT_CTF_FIELD_TYPE_ID_ARRAY: |
e98a2d6e PP |
1420 | next_field = bt_ctf_field_array_get_field(base_field, index); |
1421 | break; | |
1487a16a | 1422 | case BT_CTF_FIELD_TYPE_ID_SEQUENCE: |
e98a2d6e PP |
1423 | next_field = bt_ctf_field_sequence_get_field(base_field, index); |
1424 | break; | |
1487a16a | 1425 | case BT_CTF_FIELD_TYPE_ID_VARIANT: |
e98a2d6e PP |
1426 | next_field = bt_ctf_field_variant_get_current_field(base_field); |
1427 | break; | |
1428 | default: | |
1429 | assert(false); | |
1430 | break; | |
1431 | } | |
1432 | ||
1433 | end: | |
1434 | BT_PUT(base_type); | |
1435 | ||
1436 | return next_field; | |
1437 | } | |
1438 | ||
c44c3e70 JG |
1439 | static |
1440 | void update_clock_state(uint64_t *state, | |
1441 | struct bt_ctf_field *value_field) | |
1442 | { | |
1443 | struct bt_ctf_field_type *value_type = NULL; | |
1444 | uint64_t requested_new_value; | |
1445 | uint64_t requested_new_value_mask; | |
1446 | uint64_t cur_value_masked; | |
1447 | int requested_new_value_size; | |
1448 | int ret; | |
1449 | ||
1450 | value_type = bt_ctf_field_get_type(value_field); | |
1451 | assert(value_type); | |
1452 | ||
1453 | requested_new_value_size = | |
1454 | bt_ctf_field_type_integer_get_size(value_type); | |
1455 | assert(requested_new_value_size > 0); | |
1456 | ||
1457 | ret = bt_ctf_field_unsigned_integer_get_value(value_field, | |
1458 | &requested_new_value); | |
1459 | assert(!ret); | |
1460 | ||
1461 | /* | |
1462 | * Special case for a 64-bit new value, which is the limit | |
1463 | * of a clock value as of this version: overwrite the | |
1464 | * current value directly. | |
1465 | */ | |
1466 | if (requested_new_value_size == 64) { | |
1467 | *state = requested_new_value; | |
1468 | goto end; | |
1469 | } | |
1470 | ||
1471 | requested_new_value_mask = (1ULL << requested_new_value_size) - 1; | |
1472 | cur_value_masked = *state & requested_new_value_mask; | |
1473 | ||
1474 | if (requested_new_value < cur_value_masked) { | |
1475 | /* | |
1476 | * It looks like a wrap happened on the number of bits | |
1477 | * of the requested new value. Assume that the clock | |
1478 | * value wrapped only one time. | |
1479 | */ | |
1480 | *state += requested_new_value_mask + 1; | |
1481 | } | |
1482 | ||
1483 | /* Clear the low bits of the current clock value. */ | |
1484 | *state &= ~requested_new_value_mask; | |
1485 | ||
1486 | /* Set the low bits of the current clock value. */ | |
1487 | *state |= requested_new_value; | |
1488 | end: | |
1489 | bt_put(value_type); | |
1490 | } | |
1491 | ||
1492 | static | |
1493 | enum bt_ctf_btr_status update_clock(struct bt_ctf_notif_iter *notit, | |
1494 | struct bt_ctf_field_type *int_field_type, | |
1495 | struct bt_ctf_field *int_field) | |
1496 | { | |
ac0c6bdd | 1497 | gboolean clock_class_found; |
c44c3e70 JG |
1498 | uint64_t *clock_state; |
1499 | enum bt_ctf_btr_status ret = BT_CTF_BTR_STATUS_OK; | |
ac0c6bdd PP |
1500 | struct bt_ctf_clock_class *clock_class = |
1501 | bt_ctf_field_type_integer_get_mapped_clock_class( | |
c44c3e70 JG |
1502 | int_field_type); |
1503 | ||
ac0c6bdd | 1504 | if (likely(!clock_class)) { |
c44c3e70 JG |
1505 | goto end_no_clock; |
1506 | } | |
1507 | ||
ac0c6bdd PP |
1508 | clock_class_found = g_hash_table_lookup_extended(notit->clock_states, |
1509 | clock_class, NULL, (gpointer) &clock_state); | |
1510 | if (unlikely(!clock_class_found)) { | |
1511 | const char *clock_class_name = | |
1512 | bt_ctf_clock_class_get_name(clock_class); | |
c44c3e70 | 1513 | |
ac0c6bdd PP |
1514 | PERR("Unknown clock class %s mapped to integer encountered in stream\n", |
1515 | clock_class_name ? : "NULL"); | |
c44c3e70 JG |
1516 | ret = BT_CTF_BTR_STATUS_ERROR; |
1517 | goto end; | |
1518 | } | |
1519 | ||
1520 | if (unlikely(!clock_state)) { | |
1521 | clock_state = g_new0(uint64_t, 1); | |
1522 | if (!clock_state) { | |
1523 | ret = BT_CTF_BTR_STATUS_ENOMEM; | |
1524 | goto end; | |
1525 | } | |
ac0c6bdd | 1526 | g_hash_table_insert(notit->clock_states, bt_get(clock_class), |
c44c3e70 JG |
1527 | clock_state); |
1528 | } | |
1529 | ||
1530 | /* Update the clock's state. */ | |
1531 | update_clock_state(clock_state, int_field); | |
1532 | end: | |
ac0c6bdd | 1533 | bt_put(clock_class); |
c44c3e70 JG |
1534 | end_no_clock: |
1535 | return ret; | |
1536 | } | |
1537 | ||
e98a2d6e | 1538 | static |
5f870343 JG |
1539 | enum bt_ctf_btr_status btr_unsigned_int_common(uint64_t value, |
1540 | struct bt_ctf_field_type *type, void *data, | |
1541 | struct bt_ctf_field **_field) | |
e98a2d6e PP |
1542 | { |
1543 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1544 | struct bt_ctf_field *field = NULL; | |
1545 | struct bt_ctf_field *int_field = NULL; | |
1546 | struct bt_ctf_notif_iter *notit = data; | |
1547 | int ret; | |
1548 | ||
5f870343 | 1549 | /* Create next field */ |
e98a2d6e PP |
1550 | field = get_next_field(notit); |
1551 | if (!field) { | |
5f870343 | 1552 | PERR("Failed to get next field (unsigned int)\n"); |
e98a2d6e | 1553 | status = BT_CTF_BTR_STATUS_ERROR; |
c44c3e70 | 1554 | goto end_no_put; |
e98a2d6e PP |
1555 | } |
1556 | ||
1557 | switch(bt_ctf_field_type_get_type_id(type)) { | |
1487a16a | 1558 | case BT_CTF_FIELD_TYPE_ID_INTEGER: |
e98a2d6e PP |
1559 | /* Integer field is created field */ |
1560 | BT_MOVE(int_field, field); | |
c44c3e70 | 1561 | bt_get(type); |
e98a2d6e | 1562 | break; |
1487a16a | 1563 | case BT_CTF_FIELD_TYPE_ID_ENUM: |
e98a2d6e | 1564 | int_field = bt_ctf_field_enumeration_get_container(field); |
c44c3e70 | 1565 | type = bt_ctf_field_get_type(int_field); |
e98a2d6e PP |
1566 | break; |
1567 | default: | |
c44c3e70 JG |
1568 | assert(0); |
1569 | type = NULL; | |
e98a2d6e PP |
1570 | break; |
1571 | } | |
1572 | ||
1573 | if (!int_field) { | |
1574 | PERR("Failed to get integer field\n"); | |
1575 | status = BT_CTF_BTR_STATUS_ERROR; | |
1576 | goto end; | |
1577 | } | |
1578 | ||
5f870343 | 1579 | ret = bt_ctf_field_unsigned_integer_set_value(int_field, value); |
e98a2d6e PP |
1580 | assert(!ret); |
1581 | stack_top(notit->stack)->index++; | |
5f870343 JG |
1582 | *_field = int_field; |
1583 | ||
e98a2d6e PP |
1584 | end: |
1585 | BT_PUT(field); | |
c44c3e70 JG |
1586 | BT_PUT(type); |
1587 | end_no_put: | |
e98a2d6e PP |
1588 | return status; |
1589 | } | |
1590 | ||
5f870343 JG |
1591 | static |
1592 | enum bt_ctf_btr_status btr_timestamp_end_cb(void *value, | |
1593 | struct bt_ctf_field_type *type, void *data) | |
1594 | { | |
1595 | enum bt_ctf_btr_status status; | |
1596 | struct bt_ctf_field *field = NULL; | |
1597 | struct bt_ctf_notif_iter *notit = data; | |
1598 | ||
1599 | status = btr_unsigned_int_common(*((uint64_t *) value), type, data, | |
1600 | &field); | |
1601 | ||
1602 | /* Set as the current packet's timestamp_end field. */ | |
1603 | BT_MOVE(notit->cur_timestamp_end, field); | |
1604 | return status; | |
1605 | } | |
1606 | ||
e98a2d6e PP |
1607 | static |
1608 | enum bt_ctf_btr_status btr_unsigned_int_cb(uint64_t value, | |
1609 | struct bt_ctf_field_type *type, void *data) | |
5f870343 JG |
1610 | { |
1611 | struct bt_ctf_notif_iter *notit = data; | |
1612 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1613 | struct bt_ctf_field *field = NULL; | |
1614 | struct field_cb_override *override; | |
1615 | ||
1616 | override = g_hash_table_lookup(notit->field_overrides, | |
1617 | type); | |
1618 | if (unlikely(override)) { | |
1619 | status = override->func(&value, type, override->data); | |
1620 | goto end; | |
1621 | } | |
1622 | ||
1623 | status = btr_unsigned_int_common(value, type, data, &field); | |
1624 | if (status != BT_CTF_BTR_STATUS_OK) { | |
1625 | goto end; | |
1626 | } | |
1627 | ||
1628 | status = update_clock(notit, type, field); | |
1629 | BT_PUT(field); | |
1630 | end: | |
1631 | return status; | |
1632 | } | |
1633 | ||
1634 | static | |
1635 | enum bt_ctf_btr_status btr_signed_int_cb(int64_t value, | |
1636 | struct bt_ctf_field_type *type, void *data) | |
e98a2d6e PP |
1637 | { |
1638 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1639 | struct bt_ctf_field *field = NULL; | |
1640 | struct bt_ctf_field *int_field = NULL; | |
1641 | struct bt_ctf_notif_iter *notit = data; | |
1642 | int ret; | |
1643 | ||
5f870343 | 1644 | /* create next field */ |
e98a2d6e PP |
1645 | field = get_next_field(notit); |
1646 | if (!field) { | |
5f870343 | 1647 | PERR("Failed to get next field (signed int)\n"); |
e98a2d6e | 1648 | status = BT_CTF_BTR_STATUS_ERROR; |
c44c3e70 | 1649 | goto end_no_put; |
e98a2d6e PP |
1650 | } |
1651 | ||
1652 | switch(bt_ctf_field_type_get_type_id(type)) { | |
1487a16a | 1653 | case BT_CTF_FIELD_TYPE_ID_INTEGER: |
e98a2d6e PP |
1654 | /* Integer field is created field */ |
1655 | BT_MOVE(int_field, field); | |
c44c3e70 | 1656 | bt_get(type); |
e98a2d6e | 1657 | break; |
1487a16a | 1658 | case BT_CTF_FIELD_TYPE_ID_ENUM: |
e98a2d6e | 1659 | int_field = bt_ctf_field_enumeration_get_container(field); |
c44c3e70 | 1660 | type = bt_ctf_field_get_type(int_field); |
e98a2d6e PP |
1661 | break; |
1662 | default: | |
c44c3e70 JG |
1663 | assert(0); |
1664 | type = NULL; | |
e98a2d6e PP |
1665 | break; |
1666 | } | |
1667 | ||
1668 | if (!int_field) { | |
1669 | PERR("Failed to get integer field\n"); | |
1670 | status = BT_CTF_BTR_STATUS_ERROR; | |
1671 | goto end; | |
1672 | } | |
1673 | ||
5f870343 | 1674 | ret = bt_ctf_field_signed_integer_set_value(int_field, value); |
e98a2d6e PP |
1675 | assert(!ret); |
1676 | stack_top(notit->stack)->index++; | |
c44c3e70 | 1677 | status = update_clock(notit, type, int_field); |
e98a2d6e PP |
1678 | end: |
1679 | BT_PUT(field); | |
1680 | BT_PUT(int_field); | |
c44c3e70 JG |
1681 | BT_PUT(type); |
1682 | end_no_put: | |
e98a2d6e PP |
1683 | return status; |
1684 | } | |
1685 | ||
1686 | static | |
1687 | enum bt_ctf_btr_status btr_floating_point_cb(double value, | |
1688 | struct bt_ctf_field_type *type, void *data) | |
1689 | { | |
1690 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1691 | struct bt_ctf_field *field = NULL; | |
1692 | struct bt_ctf_notif_iter *notit = data; | |
1693 | int ret; | |
1694 | ||
1695 | /* Create next field */ | |
1696 | field = get_next_field(notit); | |
1697 | if (!field) { | |
1698 | PERR("Failed to get next field (floating point number)\n"); | |
1699 | status = BT_CTF_BTR_STATUS_ERROR; | |
1700 | goto end; | |
1701 | } | |
1702 | ||
1703 | ret = bt_ctf_field_floating_point_set_value(field, value); | |
1704 | assert(!ret); | |
1705 | stack_top(notit->stack)->index++; | |
1706 | ||
1707 | end: | |
1708 | BT_PUT(field); | |
1709 | ||
1710 | return status; | |
1711 | } | |
1712 | ||
1713 | static | |
1714 | enum bt_ctf_btr_status btr_string_begin_cb( | |
1715 | struct bt_ctf_field_type *type, void *data) | |
1716 | { | |
1717 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1718 | struct bt_ctf_field *field = NULL; | |
1719 | struct bt_ctf_notif_iter *notit = data; | |
1720 | int ret; | |
1721 | ||
1722 | /* Create next field */ | |
1723 | field = get_next_field(notit); | |
1724 | if (!field) { | |
1725 | PERR("Failed to get next field (string)\n"); | |
1726 | status = BT_CTF_BTR_STATUS_ERROR; | |
1727 | goto end; | |
1728 | } | |
1729 | ||
1730 | /* | |
1731 | * Push on stack. Not a compound type per se, but we know that only | |
1732 | * btr_string_cb() may be called between this call and a subsequent | |
1733 | * call to btr_string_end_cb(). | |
1734 | */ | |
1735 | ret = stack_push(notit->stack, field); | |
1736 | if (ret) { | |
1737 | PERR("Failed to push string field onto the stack\n"); | |
1738 | status = BT_CTF_BTR_STATUS_ERROR; | |
1739 | goto end; | |
1740 | } | |
1741 | ||
e5df2ae3 JG |
1742 | /* |
1743 | * Initialize string field payload to an empty string since in the | |
1744 | * case of a length 0 string the btr_string_cb won't be called and | |
1745 | * we will end up with an unset string payload. | |
1746 | */ | |
1747 | ret = bt_ctf_field_string_set_value(field, ""); | |
1748 | if (ret) { | |
1749 | PERR("Failed to initialize string field\n"); | |
1750 | status = BT_CTF_BTR_STATUS_ERROR; | |
1751 | goto end; | |
1752 | } | |
1753 | ||
e98a2d6e PP |
1754 | end: |
1755 | BT_PUT(field); | |
1756 | ||
1757 | return status; | |
1758 | } | |
1759 | ||
1760 | static | |
1761 | enum bt_ctf_btr_status btr_string_cb(const char *value, | |
1762 | size_t len, struct bt_ctf_field_type *type, void *data) | |
1763 | { | |
1764 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1765 | struct bt_ctf_field *field = NULL; | |
1766 | struct bt_ctf_notif_iter *notit = data; | |
1767 | int ret; | |
1768 | ||
1769 | /* Get string field */ | |
1770 | field = stack_top(notit->stack)->base; | |
1771 | assert(field); | |
1772 | ||
1773 | /* Append current string */ | |
1774 | ret = bt_ctf_field_string_append_len(field, value, len); | |
1775 | if (ret) { | |
1776 | PERR("Failed to append a string to a string field\n"); | |
1777 | status = BT_CTF_BTR_STATUS_ERROR; | |
1778 | goto end; | |
1779 | } | |
1780 | ||
1781 | end: | |
1782 | return status; | |
1783 | } | |
1784 | ||
1785 | static | |
1786 | enum bt_ctf_btr_status btr_string_end_cb( | |
1787 | struct bt_ctf_field_type *type, void *data) | |
1788 | { | |
1789 | struct bt_ctf_notif_iter *notit = data; | |
1790 | ||
1791 | /* Pop string field */ | |
1792 | stack_pop(notit->stack); | |
1793 | ||
1794 | /* Go to next field */ | |
1795 | stack_top(notit->stack)->index++; | |
1796 | ||
1797 | return BT_CTF_BTR_STATUS_OK; | |
1798 | } | |
1799 | ||
1800 | enum bt_ctf_btr_status btr_compound_begin_cb( | |
1801 | struct bt_ctf_field_type *type, void *data) | |
1802 | { | |
1803 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1804 | struct bt_ctf_notif_iter *notit = data; | |
1805 | struct bt_ctf_field *field; | |
1806 | int ret; | |
1807 | ||
1808 | /* Create field */ | |
1809 | if (stack_empty(notit->stack)) { | |
1810 | /* Root: create dynamic scope field */ | |
1811 | *notit->cur_dscope_field = bt_ctf_field_create(type); | |
1812 | field = *notit->cur_dscope_field; | |
1813 | ||
1814 | /* | |
1815 | * Field will be put at the end of this function | |
1816 | * (stack_push() will take one reference, but this | |
1817 | * reference is lost upon the equivalent stack_pop() | |
1818 | * later), so also get it for our context to own it. | |
1819 | */ | |
1820 | bt_get(*notit->cur_dscope_field); | |
1821 | } else { | |
1822 | field = get_next_field(notit); | |
1823 | } | |
1824 | ||
1825 | if (!field) { | |
1826 | PERR("Failed to get next field or create dynamic scope field\n"); | |
1827 | status = BT_CTF_BTR_STATUS_ERROR; | |
1828 | goto end; | |
1829 | } | |
1830 | ||
1831 | /* Push field */ | |
1832 | ret = stack_push(notit->stack, field); | |
1833 | if (ret) { | |
1834 | PERR("Failed to push compound field onto the stack\n"); | |
1835 | status = BT_CTF_BTR_STATUS_ERROR; | |
1836 | goto end; | |
1837 | } | |
1838 | ||
1839 | end: | |
1840 | BT_PUT(field); | |
1841 | ||
1842 | return status; | |
1843 | } | |
1844 | ||
1845 | enum bt_ctf_btr_status btr_compound_end_cb( | |
1846 | struct bt_ctf_field_type *type, void *data) | |
1847 | { | |
1848 | struct bt_ctf_notif_iter *notit = data; | |
1849 | ||
1850 | assert(!stack_empty(notit->stack)); | |
1851 | ||
1852 | /* Pop stack */ | |
1853 | stack_pop(notit->stack); | |
1854 | ||
1855 | /* If the stack is not empty, increment the base's index */ | |
1856 | if (!stack_empty(notit->stack)) { | |
1857 | stack_top(notit->stack)->index++; | |
1858 | } | |
1859 | ||
1860 | return BT_CTF_BTR_STATUS_OK; | |
1861 | } | |
1862 | ||
1863 | static | |
1864 | struct bt_ctf_field *resolve_field(struct bt_ctf_notif_iter *notit, | |
1865 | struct bt_ctf_field_path *path) | |
1866 | { | |
1867 | struct bt_ctf_field *field = NULL; | |
1868 | unsigned int i; | |
1869 | ||
1870 | switch (bt_ctf_field_path_get_root_scope(path)) { | |
1871 | case BT_CTF_SCOPE_TRACE_PACKET_HEADER: | |
1872 | field = notit->dscopes.trace_packet_header; | |
1873 | break; | |
1874 | case BT_CTF_SCOPE_STREAM_PACKET_CONTEXT: | |
1875 | field = notit->dscopes.stream_packet_context; | |
1876 | break; | |
1877 | case BT_CTF_SCOPE_STREAM_EVENT_HEADER: | |
1878 | field = notit->dscopes.stream_event_header; | |
1879 | break; | |
1880 | case BT_CTF_SCOPE_STREAM_EVENT_CONTEXT: | |
1881 | field = notit->dscopes.stream_event_context; | |
1882 | break; | |
1883 | case BT_CTF_SCOPE_EVENT_CONTEXT: | |
1884 | field = notit->dscopes.event_context; | |
1885 | break; | |
1886 | case BT_CTF_SCOPE_EVENT_FIELDS: | |
1887 | field = notit->dscopes.event_payload; | |
1888 | break; | |
1889 | default: | |
1890 | break; | |
1891 | } | |
1892 | ||
1893 | if (!field) { | |
1894 | goto end; | |
1895 | } | |
1896 | ||
1897 | bt_get(field); | |
1898 | ||
1899 | for (i = 0; i < bt_ctf_field_path_get_index_count(path); ++i) { | |
1900 | struct bt_ctf_field *next_field = NULL; | |
1901 | struct bt_ctf_field_type *field_type; | |
1902 | int index = bt_ctf_field_path_get_index(path, i); | |
1903 | ||
1904 | field_type = bt_ctf_field_get_type(field); | |
1905 | if (!field_type) { | |
1906 | BT_PUT(field); | |
1907 | goto end; | |
1908 | } | |
1909 | ||
1910 | if (is_struct_type(field_type)) { | |
1911 | next_field = bt_ctf_field_structure_get_field_by_index( | |
1912 | field, index); | |
1913 | } else if (is_variant_type(field_type)) { | |
1914 | next_field = | |
1915 | bt_ctf_field_variant_get_current_field(field); | |
1916 | } | |
1917 | ||
1918 | BT_PUT(field); | |
1919 | BT_PUT(field_type); | |
1920 | ||
1921 | if (!next_field) { | |
1922 | goto end; | |
1923 | } | |
1924 | ||
1925 | /* Move next field -> field */ | |
1926 | BT_MOVE(field, next_field); | |
1927 | } | |
1928 | ||
1929 | end: | |
1930 | return field; | |
1931 | } | |
1932 | ||
1933 | static | |
1934 | int64_t btr_get_sequence_length_cb(struct bt_ctf_field_type *type, void *data) | |
1935 | { | |
1936 | int64_t ret = -1; | |
1937 | int iret; | |
1938 | struct bt_ctf_field_path *field_path; | |
1939 | struct bt_ctf_notif_iter *notit = data; | |
2cf1d51e | 1940 | struct bt_ctf_field *length_field = NULL; |
e98a2d6e PP |
1941 | uint64_t length; |
1942 | ||
1943 | field_path = bt_ctf_field_type_sequence_get_length_field_path(type); | |
1944 | if (!field_path) { | |
1945 | goto end; | |
1946 | } | |
1947 | ||
2cf1d51e JG |
1948 | length_field = resolve_field(notit, field_path); |
1949 | if (!length_field) { | |
e98a2d6e PP |
1950 | goto end; |
1951 | } | |
1952 | ||
2cf1d51e | 1953 | iret = bt_ctf_field_unsigned_integer_get_value(length_field, &length); |
e98a2d6e PP |
1954 | if (iret) { |
1955 | goto end; | |
1956 | } | |
1957 | ||
2cf1d51e JG |
1958 | iret = bt_ctf_field_sequence_set_length(stack_top(notit->stack)->base, |
1959 | length_field); | |
1960 | if (iret) { | |
1961 | goto end; | |
1962 | } | |
e98a2d6e PP |
1963 | ret = (int64_t) length; |
1964 | ||
1965 | end: | |
2cf1d51e | 1966 | BT_PUT(length_field); |
e98a2d6e PP |
1967 | BT_PUT(field_path); |
1968 | ||
1969 | return ret; | |
1970 | } | |
1971 | ||
1972 | static | |
1973 | struct bt_ctf_field_type *btr_get_variant_type_cb( | |
1974 | struct bt_ctf_field_type *type, void *data) | |
1975 | { | |
1976 | struct bt_ctf_field_path *path; | |
1977 | struct bt_ctf_notif_iter *notit = data; | |
1978 | struct bt_ctf_field *tag_field = NULL; | |
1979 | struct bt_ctf_field *selected_field = NULL; | |
1980 | struct bt_ctf_field_type *selected_field_type = NULL; | |
1981 | ||
1982 | path = bt_ctf_field_type_variant_get_tag_field_path(type); | |
1983 | if (!path) { | |
1984 | goto end; | |
1985 | } | |
1986 | ||
1987 | tag_field = resolve_field(notit, path); | |
1988 | if (!tag_field) { | |
1989 | goto end; | |
1990 | } | |
1991 | ||
1992 | /* | |
1993 | * We found the enumeration tag field instance which should be | |
1994 | * able to select a current field for this variant. This | |
1995 | * callback function we're in is called _after_ | |
1996 | * compound_begin(), so the current stack top's base field is | |
1997 | * the variant field in question. We get the selected field here | |
1998 | * thanks to this tag field (thus creating the selected field), | |
1999 | * which will also provide us with its type. Then, this field | |
2000 | * will remain the current selected one until the next callback | |
2001 | * function call which is used to fill the current selected | |
2002 | * field. | |
2003 | */ | |
2004 | selected_field = bt_ctf_field_variant_get_field( | |
2005 | stack_top(notit->stack)->base, tag_field); | |
2006 | if (!selected_field) { | |
2007 | goto end; | |
2008 | } | |
2009 | ||
2010 | selected_field_type = bt_ctf_field_get_type(selected_field); | |
2011 | ||
2012 | end: | |
2013 | BT_PUT(tag_field); | |
2014 | BT_PUT(selected_field); | |
f77ae72a | 2015 | BT_PUT(path); |
e98a2d6e PP |
2016 | |
2017 | return selected_field_type; | |
2018 | } | |
2019 | ||
1556a1af JG |
2020 | static |
2021 | int set_event_clocks(struct bt_ctf_event *event, | |
2022 | struct bt_ctf_notif_iter *notit) | |
2023 | { | |
2024 | int ret; | |
2025 | GHashTableIter iter; | |
ac0c6bdd | 2026 | struct bt_ctf_clock_class *clock_class; |
1556a1af JG |
2027 | uint64_t *clock_state; |
2028 | ||
2029 | g_hash_table_iter_init(&iter, notit->clock_states); | |
2030 | ||
ac0c6bdd | 2031 | while (g_hash_table_iter_next(&iter, (gpointer) &clock_class, |
1556a1af JG |
2032 | (gpointer) &clock_state)) { |
2033 | struct bt_ctf_clock_value *clock_value; | |
2034 | ||
ac0c6bdd PP |
2035 | clock_value = bt_ctf_clock_value_create(clock_class, |
2036 | *clock_state); | |
1556a1af JG |
2037 | if (!clock_value) { |
2038 | ret = -1; | |
2039 | goto end; | |
2040 | } | |
3f3c46b8 | 2041 | ret = bt_ctf_event_set_clock_value(event, clock_value); |
1556a1af JG |
2042 | bt_put(clock_value); |
2043 | if (ret) { | |
2044 | goto end; | |
2045 | } | |
2046 | } | |
2047 | ret = 0; | |
2048 | end: | |
2049 | return ret; | |
2050 | } | |
2051 | ||
78586d8a JG |
2052 | static |
2053 | struct bt_ctf_event *create_event(struct bt_ctf_notif_iter *notit) | |
e98a2d6e | 2054 | { |
e98a2d6e | 2055 | int ret; |
78586d8a | 2056 | struct bt_ctf_event *event; |
e98a2d6e | 2057 | |
78586d8a | 2058 | /* Create event object. */ |
e98a2d6e PP |
2059 | event = bt_ctf_event_create(notit->meta.event_class); |
2060 | if (!event) { | |
2061 | goto error; | |
2062 | } | |
2063 | ||
78586d8a | 2064 | /* Set header, stream event context, context, and payload fields. */ |
e98a2d6e PP |
2065 | ret = bt_ctf_event_set_header(event, |
2066 | notit->dscopes.stream_event_header); | |
2067 | if (ret) { | |
2068 | goto error; | |
2069 | } | |
2070 | ||
2071 | ret = bt_ctf_event_set_stream_event_context(event, | |
2072 | notit->dscopes.stream_event_context); | |
2073 | if (ret) { | |
2074 | goto error; | |
2075 | } | |
2076 | ||
2077 | ret = bt_ctf_event_set_event_context(event, | |
2078 | notit->dscopes.event_context); | |
2079 | if (ret) { | |
2080 | goto error; | |
2081 | } | |
2082 | ||
2083 | ret = bt_ctf_event_set_payload_field(event, | |
2084 | notit->dscopes.event_payload); | |
2085 | if (ret) { | |
2086 | goto error; | |
2087 | } | |
2088 | ||
1556a1af JG |
2089 | ret = set_event_clocks(event, notit); |
2090 | if (ret) { | |
2091 | goto error; | |
2092 | } | |
2093 | ||
78586d8a | 2094 | /* Associate with current packet. */ |
e98a2d6e PP |
2095 | assert(notit->packet); |
2096 | ret = bt_ctf_event_set_packet(event, notit->packet); | |
2097 | if (ret) { | |
2098 | goto error; | |
2099 | } | |
2100 | ||
2101 | goto end; | |
e98a2d6e PP |
2102 | error: |
2103 | BT_PUT(event); | |
e98a2d6e PP |
2104 | end: |
2105 | return event; | |
2106 | } | |
2107 | ||
78586d8a JG |
2108 | static |
2109 | void create_packet(struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
2110 | { |
2111 | int ret; | |
2112 | struct bt_ctf_stream *stream = NULL; | |
2113 | struct bt_ctf_packet *packet = NULL; | |
2114 | ||
2115 | /* Ask the user for the stream */ | |
2116 | stream = notit->medium.medops.get_stream(notit->meta.stream_class, | |
78586d8a | 2117 | notit->medium.data); |
e98a2d6e PP |
2118 | if (!stream) { |
2119 | goto error; | |
2120 | } | |
2121 | ||
2122 | /* Create packet */ | |
2123 | packet = bt_ctf_packet_create(stream); | |
2124 | if (!packet) { | |
2125 | goto error; | |
2126 | } | |
2127 | ||
2128 | /* Set packet's context and header fields */ | |
2129 | if (notit->dscopes.trace_packet_header) { | |
2130 | ret = bt_ctf_packet_set_header(packet, | |
78586d8a | 2131 | notit->dscopes.trace_packet_header); |
e98a2d6e PP |
2132 | if (ret) { |
2133 | goto error; | |
2134 | } | |
2135 | } | |
2136 | ||
2137 | if (notit->dscopes.stream_packet_context) { | |
2138 | ret = bt_ctf_packet_set_context(packet, | |
78586d8a | 2139 | notit->dscopes.stream_packet_context); |
e98a2d6e PP |
2140 | if (ret) { |
2141 | goto error; | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | goto end; | |
e98a2d6e PP |
2146 | error: |
2147 | BT_PUT(packet); | |
e98a2d6e PP |
2148 | end: |
2149 | BT_MOVE(notit->packet, packet); | |
2150 | } | |
2151 | ||
78586d8a JG |
2152 | static |
2153 | void notify_new_packet(struct bt_ctf_notif_iter *notit, | |
2154 | struct bt_notification **notification) | |
e98a2d6e | 2155 | { |
78586d8a | 2156 | struct bt_notification *ret; |
e98a2d6e | 2157 | |
78586d8a | 2158 | /* Initialize the iterator's current packet */ |
e98a2d6e PP |
2159 | create_packet(notit); |
2160 | if (!notit->packet) { | |
78586d8a | 2161 | return; |
e98a2d6e PP |
2162 | } |
2163 | ||
ea0e619e | 2164 | ret = bt_notification_packet_begin_create(notit->packet); |
78586d8a JG |
2165 | if (!ret) { |
2166 | return; | |
2167 | } | |
2168 | *notification = ret; | |
e98a2d6e PP |
2169 | } |
2170 | ||
78586d8a JG |
2171 | static |
2172 | void notify_end_of_packet(struct bt_ctf_notif_iter *notit, | |
2173 | struct bt_notification **notification) | |
e98a2d6e | 2174 | { |
78586d8a | 2175 | struct bt_notification *ret; |
e98a2d6e | 2176 | |
e98a2d6e | 2177 | if (!notit->packet) { |
78586d8a | 2178 | return; |
e98a2d6e PP |
2179 | } |
2180 | ||
78586d8a JG |
2181 | ret = bt_notification_packet_end_create(notit->packet); |
2182 | if (!ret) { | |
2183 | return; | |
2184 | } | |
2185 | BT_PUT(notit->packet); | |
2186 | *notification = ret; | |
e98a2d6e PP |
2187 | } |
2188 | ||
78586d8a JG |
2189 | static |
2190 | void notify_event(struct bt_ctf_notif_iter *notit, | |
2191 | struct bt_notification **notification) | |
e98a2d6e | 2192 | { |
78586d8a JG |
2193 | struct bt_ctf_event *event; |
2194 | struct bt_notification *ret = NULL; | |
e98a2d6e PP |
2195 | |
2196 | /* Create event */ | |
2197 | event = create_event(notit); | |
2198 | if (!event) { | |
78586d8a | 2199 | goto end; |
e98a2d6e | 2200 | } |
e98a2d6e | 2201 | |
599faa1c | 2202 | ret = bt_notification_event_create(event, notit->cc_prio_map); |
78586d8a JG |
2203 | if (!ret) { |
2204 | goto end; | |
e98a2d6e | 2205 | } |
78586d8a JG |
2206 | *notification = ret; |
2207 | end: | |
2208 | BT_PUT(event); | |
e98a2d6e PP |
2209 | } |
2210 | ||
b7726e32 | 2211 | //FIXME: not used ? |
043e2020 JG |
2212 | static |
2213 | void notify_eos(struct bt_ctf_notif_iter *notit, | |
2214 | struct bt_notification **notification) | |
2215 | { | |
b7726e32 | 2216 | struct bt_ctf_stream *stream = NULL; |
043e2020 JG |
2217 | struct bt_notification *ret = NULL; |
2218 | ||
b7726e32 MD |
2219 | /* Ask the user for the stream */ |
2220 | stream = notit->medium.medops.get_stream(notit->meta.stream_class, | |
2221 | notit->medium.data); | |
2222 | if (!stream) { | |
043e2020 JG |
2223 | goto end; |
2224 | } | |
2225 | ||
b7726e32 | 2226 | ret = bt_notification_stream_end_create(stream); |
043e2020 JG |
2227 | if (!ret) { |
2228 | goto end; | |
2229 | } | |
2230 | *notification = ret; | |
2231 | end: | |
b7726e32 | 2232 | BT_PUT(stream); |
043e2020 JG |
2233 | } |
2234 | ||
c44c3e70 JG |
2235 | static |
2236 | int init_clock_states(GHashTable *clock_states, struct bt_ctf_trace *trace) | |
2237 | { | |
ac0c6bdd | 2238 | int clock_class_count, i, ret = 0; |
c44c3e70 | 2239 | |
ac0c6bdd PP |
2240 | clock_class_count = bt_ctf_trace_get_clock_class_count(trace); |
2241 | if (clock_class_count <= 0) { | |
c44c3e70 JG |
2242 | ret = -1; |
2243 | goto end; | |
2244 | } | |
2245 | ||
ac0c6bdd PP |
2246 | for (i = 0; i < clock_class_count; i++) { |
2247 | struct bt_ctf_clock_class *clock_class; | |
c44c3e70 | 2248 | |
ac0c6bdd PP |
2249 | clock_class = bt_ctf_trace_get_clock_class(trace, i); |
2250 | if (!clock_class) { | |
c44c3e70 JG |
2251 | ret = -1; |
2252 | goto end; | |
2253 | } | |
2254 | ||
ac0c6bdd PP |
2255 | g_hash_table_insert(clock_states, bt_get(clock_class), NULL); |
2256 | bt_put(clock_class); | |
c44c3e70 JG |
2257 | } |
2258 | end: | |
2259 | return ret; | |
2260 | } | |
2261 | ||
5f870343 JG |
2262 | static |
2263 | void init_trace_field_path_cache(struct bt_ctf_trace *trace, | |
2264 | struct trace_field_path_cache *trace_field_path_cache) | |
2265 | { | |
2266 | int stream_id = -1; | |
2267 | int stream_instance_id = -1; | |
2268 | int i, count; | |
2269 | struct bt_ctf_field_type *packet_header = NULL; | |
2270 | ||
2271 | packet_header = bt_ctf_trace_get_packet_header_type(trace); | |
2272 | if (!packet_header) { | |
2273 | goto end; | |
2274 | } | |
2275 | ||
2276 | if (!bt_ctf_field_type_is_structure(packet_header)) { | |
2277 | goto end; | |
2278 | } | |
2279 | ||
2280 | count = bt_ctf_field_type_structure_get_field_count(packet_header); | |
2281 | if (count < 0) { | |
2282 | goto end; | |
2283 | } | |
2284 | ||
2285 | for (i = 0; (i < count && (stream_id == -1 || stream_instance_id == -1)); i++) { | |
2286 | int ret; | |
2287 | const char *field_name; | |
2288 | ||
2289 | ret = bt_ctf_field_type_structure_get_field(packet_header, | |
2290 | &field_name, NULL, i); | |
2291 | if (ret) { | |
2292 | goto end; | |
2293 | } | |
2294 | ||
2295 | if (stream_id == -1 && !strcmp(field_name, "stream_id")) { | |
2296 | stream_id = i; | |
2297 | } else if (stream_instance_id == -1 && | |
2298 | !strcmp(field_name, "stream_instance_id")) { | |
2299 | stream_instance_id = i; | |
2300 | } | |
2301 | } | |
2302 | end: | |
2303 | trace_field_path_cache->stream_id = stream_id; | |
2304 | trace_field_path_cache->stream_instance_id = stream_instance_id; | |
2305 | BT_PUT(packet_header); | |
2306 | } | |
2307 | ||
c44c3e70 | 2308 | BT_HIDDEN |
e98a2d6e | 2309 | struct bt_ctf_notif_iter *bt_ctf_notif_iter_create(struct bt_ctf_trace *trace, |
599faa1c | 2310 | struct bt_clock_class_priority_map *cc_prio_map, |
e98a2d6e PP |
2311 | size_t max_request_sz, |
2312 | struct bt_ctf_notif_iter_medium_ops medops, | |
2313 | void *data, FILE *err_stream) | |
2314 | { | |
c44c3e70 | 2315 | int ret; |
e98a2d6e PP |
2316 | struct bt_ctf_notif_iter *notit = NULL; |
2317 | struct bt_ctf_btr_cbs cbs = { | |
2318 | .types = { | |
2319 | .signed_int = btr_signed_int_cb, | |
2320 | .unsigned_int = btr_unsigned_int_cb, | |
2321 | .floating_point = btr_floating_point_cb, | |
2322 | .string_begin = btr_string_begin_cb, | |
2323 | .string = btr_string_cb, | |
2324 | .string_end = btr_string_end_cb, | |
2325 | .compound_begin = btr_compound_begin_cb, | |
2326 | .compound_end = btr_compound_end_cb, | |
2327 | }, | |
2328 | .query = { | |
2329 | .get_sequence_length = btr_get_sequence_length_cb, | |
2330 | .get_variant_type = btr_get_variant_type_cb, | |
2331 | }, | |
2332 | }; | |
2333 | ||
2334 | assert(trace); | |
599faa1c | 2335 | assert(cc_prio_map); |
e98a2d6e | 2336 | assert(medops.request_bytes); |
f3985ab1 | 2337 | assert(medops.get_stream); |
e98a2d6e PP |
2338 | notit = g_new0(struct bt_ctf_notif_iter, 1); |
2339 | if (!notit) { | |
2340 | PERR("Failed to allocate memory for CTF notification iterator\n"); | |
2341 | goto end; | |
2342 | } | |
c44c3e70 JG |
2343 | notit->clock_states = g_hash_table_new_full(g_direct_hash, |
2344 | g_direct_equal, bt_put, g_free); | |
2345 | if (!notit->clock_states) { | |
2346 | PERR("Failed to create hash table\n"); | |
2347 | goto error; | |
2348 | } | |
2349 | ret = init_clock_states(notit->clock_states, trace); | |
2350 | if (ret) { | |
2351 | PERR("Failed to initialize stream clock states\n"); | |
2352 | goto error; | |
2353 | } | |
599faa1c | 2354 | notit->cc_prio_map = bt_get(cc_prio_map); |
35d47007 | 2355 | notit->meta.trace = bt_get(trace); |
e98a2d6e PP |
2356 | notit->medium.medops = medops; |
2357 | notit->medium.max_request_sz = max_request_sz; | |
2358 | notit->medium.data = data; | |
2359 | notit->err_stream = err_stream; | |
2360 | notit->stack = stack_new(notit); | |
2361 | if (!notit->stack) { | |
2362 | PERR("Failed to create stack\n"); | |
c44c3e70 | 2363 | goto error; |
e98a2d6e PP |
2364 | } |
2365 | ||
2366 | notit->btr = bt_ctf_btr_create(cbs, notit, err_stream); | |
2367 | if (!notit->btr) { | |
2368 | PERR("Failed to create binary type reader\n"); | |
c44c3e70 | 2369 | goto error; |
e98a2d6e PP |
2370 | } |
2371 | ||
2372 | bt_ctf_notif_iter_reset(notit); | |
2373 | ||
5f870343 JG |
2374 | init_trace_field_path_cache(trace, ¬it->trace_field_path_cache); |
2375 | notit->sc_field_path_caches = g_hash_table_new_full(g_direct_hash, | |
2376 | g_direct_equal, bt_put, g_free); | |
2377 | if (!notit->sc_field_path_caches) { | |
2378 | PERR("Failed to create stream class field path caches\n"); | |
2379 | goto error; | |
2380 | } | |
2381 | ||
2382 | notit->field_overrides = g_hash_table_new_full(g_direct_hash, | |
2383 | g_direct_equal, bt_put, g_free); | |
2384 | if (!notit->field_overrides) { | |
2385 | goto error; | |
2386 | } | |
2387 | ||
e98a2d6e PP |
2388 | end: |
2389 | return notit; | |
c44c3e70 JG |
2390 | error: |
2391 | bt_ctf_notif_iter_destroy(notit); | |
2392 | notit = NULL; | |
2393 | goto end; | |
e98a2d6e PP |
2394 | } |
2395 | ||
2396 | void bt_ctf_notif_iter_destroy(struct bt_ctf_notif_iter *notit) | |
2397 | { | |
599faa1c | 2398 | BT_PUT(notit->cc_prio_map); |
e98a2d6e PP |
2399 | BT_PUT(notit->meta.trace); |
2400 | BT_PUT(notit->meta.stream_class); | |
2401 | BT_PUT(notit->meta.event_class); | |
2402 | BT_PUT(notit->packet); | |
5f870343 | 2403 | BT_PUT(notit->cur_timestamp_end); |
e98a2d6e PP |
2404 | put_all_dscopes(notit); |
2405 | ||
2406 | if (notit->stack) { | |
2407 | stack_destroy(notit->stack); | |
2408 | } | |
2409 | ||
2410 | if (notit->btr) { | |
2411 | bt_ctf_btr_destroy(notit->btr); | |
2412 | } | |
2413 | ||
c44c3e70 JG |
2414 | if (notit->clock_states) { |
2415 | g_hash_table_destroy(notit->clock_states); | |
2416 | } | |
5f870343 JG |
2417 | |
2418 | if (notit->sc_field_path_caches) { | |
2419 | g_hash_table_destroy(notit->sc_field_path_caches); | |
2420 | } | |
2421 | ||
2422 | if (notit->field_overrides) { | |
2423 | g_hash_table_destroy(notit->field_overrides); | |
2424 | } | |
e98a2d6e PP |
2425 | g_free(notit); |
2426 | } | |
2427 | ||
2428 | enum bt_ctf_notif_iter_status bt_ctf_notif_iter_get_next_notification( | |
2429 | struct bt_ctf_notif_iter *notit, | |
78586d8a | 2430 | struct bt_notification **notification) |
e98a2d6e PP |
2431 | { |
2432 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
2433 | ||
2434 | assert(notit); | |
2435 | assert(notification); | |
2436 | ||
2437 | while (true) { | |
2438 | status = handle_state(notit); | |
2439 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
2440 | if (status == BT_CTF_NOTIF_ITER_STATUS_EOF) { | |
78586d8a | 2441 | PDBG("Medium operation reported end of stream\n"); |
e98a2d6e PP |
2442 | } else { |
2443 | PERR("Failed to handle state:\n"); | |
78586d8a | 2444 | PERR("\tState: %d\n", notit->state); |
e98a2d6e PP |
2445 | } |
2446 | goto end; | |
2447 | } | |
2448 | ||
2449 | switch (notit->state) { | |
2450 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
2451 | PDBG("Emitting new packet notification\n"); | |
2452 | notify_new_packet(notit, notification); | |
2453 | if (!*notification) { | |
2454 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2455 | } | |
2456 | goto end; | |
2457 | case STATE_EMIT_NOTIF_EVENT: | |
2458 | PDBG("Emitting event notification\n"); | |
2459 | notify_event(notit, notification); | |
2460 | if (!*notification) { | |
2461 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2462 | } | |
2463 | goto end; | |
2464 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
5f870343 JG |
2465 | /* Update clock with timestamp_end field. */ |
2466 | if (notit->cur_timestamp_end) { | |
2467 | enum bt_ctf_btr_status btr_status; | |
2468 | struct bt_ctf_field_type *field_type = | |
2469 | bt_ctf_field_get_type( | |
2470 | notit->cur_timestamp_end); | |
2471 | ||
2472 | btr_status = update_clock(notit, field_type, | |
2473 | notit->cur_timestamp_end); | |
2474 | BT_PUT(field_type); | |
2475 | if (btr_status != BT_CTF_BTR_STATUS_OK) { | |
2476 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2477 | goto end; | |
2478 | } | |
2479 | } | |
2480 | ||
e98a2d6e PP |
2481 | PDBG("Emitting end of packet notification\n"); |
2482 | notify_end_of_packet(notit, notification); | |
2483 | if (!*notification) { | |
2484 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2485 | } | |
2486 | goto end; | |
2487 | default: | |
2488 | /* Non-emitting state: continue */ | |
2489 | break; | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | end: | |
2494 | return status; | |
2495 | } |