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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 | ||
165 | /* Current packet (NULL if not created yet) */ | |
166 | struct bt_ctf_packet *packet; | |
167 | ||
5f870343 JG |
168 | /* |
169 | * Current timestamp_end field (to consider before switching packets). | |
170 | */ | |
171 | struct bt_ctf_field *cur_timestamp_end; | |
172 | ||
e98a2d6e PP |
173 | /* Database of current dynamic scopes (owned by this) */ |
174 | struct { | |
175 | struct bt_ctf_field *trace_packet_header; | |
176 | struct bt_ctf_field *stream_packet_context; | |
177 | struct bt_ctf_field *stream_event_header; | |
178 | struct bt_ctf_field *stream_event_context; | |
179 | struct bt_ctf_field *event_context; | |
180 | struct bt_ctf_field *event_payload; | |
181 | } dscopes; | |
182 | ||
5f870343 JG |
183 | /* |
184 | * Special field overrides. | |
185 | * | |
186 | * Overrides are used to implement the behaviours of special fields such | |
187 | * as "timestamp_end" (which must be ignored until the end of the | |
188 | * packet), "id" (event id) which can be present multiple times and must | |
189 | * be updated multiple time. | |
190 | * | |
191 | * This should be used to implement the behaviour of integer fields | |
192 | * mapped to clocks and other "tagged" fields (in CTF 2). | |
193 | * | |
194 | * bt_ctf_field_type to struct field_cb_override | |
195 | */ | |
196 | GHashTable *field_overrides; | |
197 | ||
e98a2d6e PP |
198 | /* Current state */ |
199 | enum state state; | |
200 | ||
2cf1d51e | 201 | /* Current medium buffer data */ |
e98a2d6e PP |
202 | struct { |
203 | /* Last address provided by medium */ | |
204 | const uint8_t *addr; | |
205 | ||
206 | /* Buffer size provided by medium (bytes) */ | |
207 | size_t sz; | |
208 | ||
209 | /* Offset within whole packet of addr (bits) */ | |
210 | size_t packet_offset; | |
211 | ||
212 | /* Current position from addr (bits) */ | |
213 | size_t at; | |
214 | } buf; | |
215 | ||
216 | /* Binary type reader */ | |
217 | struct bt_ctf_btr *btr; | |
218 | ||
2cf1d51e | 219 | /* Current medium data */ |
e98a2d6e PP |
220 | struct { |
221 | struct bt_ctf_notif_iter_medium_ops medops; | |
222 | size_t max_request_sz; | |
223 | void *data; | |
224 | } medium; | |
225 | ||
226 | /* Current packet size (bits) (-1 if unknown) */ | |
e7a4393b | 227 | int64_t cur_packet_size; |
e98a2d6e PP |
228 | |
229 | /* Current content size (bits) (-1 if unknown) */ | |
e7a4393b | 230 | int64_t cur_content_size; |
c44c3e70 | 231 | |
ac0c6bdd | 232 | /* bt_ctf_clock_class to uint64_t. */ |
c44c3e70 | 233 | GHashTable *clock_states; |
5f870343 JG |
234 | |
235 | /* | |
236 | * Cache of the trace-constant field paths (event header type) | |
237 | * associated to the current trace. | |
238 | */ | |
239 | struct trace_field_path_cache trace_field_path_cache; | |
240 | ||
241 | /* | |
242 | * Field path cache associated with the current stream class. | |
243 | * Ownership of this structure belongs to the field_path_caches HT. | |
244 | */ | |
245 | struct stream_class_field_path_cache *cur_sc_field_path_cache; | |
246 | ||
247 | /* bt_ctf_stream_class to struct stream_class_field_path_cache. */ | |
248 | GHashTable *sc_field_path_caches; | |
e98a2d6e PP |
249 | }; |
250 | ||
2cf1d51e JG |
251 | static |
252 | int bt_ctf_notif_iter_switch_packet(struct bt_ctf_notif_iter *notit); | |
253 | ||
5f870343 JG |
254 | static |
255 | enum bt_ctf_btr_status btr_timestamp_end_cb(void *value, | |
256 | struct bt_ctf_field_type *type, void *data); | |
257 | ||
e98a2d6e PP |
258 | static |
259 | void stack_entry_free_func(gpointer data) | |
260 | { | |
261 | struct stack_entry *entry = data; | |
262 | ||
263 | bt_put(entry->base); | |
264 | g_free(entry); | |
265 | } | |
266 | ||
267 | static | |
268 | struct stack *stack_new(struct bt_ctf_notif_iter *notit) | |
269 | { | |
270 | struct stack *stack = NULL; | |
271 | ||
272 | stack = g_new0(struct stack, 1); | |
273 | if (!stack) { | |
274 | goto error; | |
275 | } | |
276 | ||
277 | stack->entries = g_ptr_array_new_with_free_func(stack_entry_free_func); | |
278 | if (!stack->entries) { | |
279 | goto error; | |
280 | } | |
281 | ||
e98a2d6e | 282 | return stack; |
e98a2d6e PP |
283 | error: |
284 | g_free(stack); | |
e98a2d6e PP |
285 | return NULL; |
286 | } | |
287 | ||
288 | static | |
289 | void stack_destroy(struct stack *stack) | |
290 | { | |
291 | assert(stack); | |
292 | g_ptr_array_free(stack->entries, TRUE); | |
293 | g_free(stack); | |
294 | } | |
295 | ||
296 | static | |
297 | int stack_push(struct stack *stack, struct bt_ctf_field *base) | |
298 | { | |
299 | int ret = 0; | |
300 | struct stack_entry *entry; | |
e98a2d6e PP |
301 | |
302 | assert(stack); | |
303 | assert(base); | |
e98a2d6e PP |
304 | entry = g_new0(struct stack_entry, 1); |
305 | if (!entry) { | |
e98a2d6e PP |
306 | ret = -1; |
307 | goto end; | |
308 | } | |
309 | ||
310 | entry->base = bt_get(base); | |
311 | g_ptr_array_add(stack->entries, entry); | |
312 | ||
313 | end: | |
314 | return ret; | |
315 | } | |
316 | ||
317 | static inline | |
318 | unsigned int stack_size(struct stack *stack) | |
319 | { | |
320 | assert(stack); | |
321 | ||
322 | return stack->entries->len; | |
323 | } | |
324 | ||
325 | static | |
326 | void stack_pop(struct stack *stack) | |
327 | { | |
328 | assert(stack); | |
329 | assert(stack_size(stack)); | |
330 | g_ptr_array_remove_index(stack->entries, stack->entries->len - 1); | |
331 | } | |
332 | ||
333 | static inline | |
334 | struct stack_entry *stack_top(struct stack *stack) | |
335 | { | |
336 | assert(stack); | |
337 | assert(stack_size(stack)); | |
338 | ||
339 | return g_ptr_array_index(stack->entries, stack->entries->len - 1); | |
340 | } | |
341 | ||
342 | static inline | |
343 | bool stack_empty(struct stack *stack) | |
344 | { | |
345 | return stack_size(stack) == 0; | |
346 | } | |
347 | ||
348 | static | |
349 | void stack_clear(struct stack *stack) | |
350 | { | |
351 | assert(stack); | |
352 | ||
353 | if (!stack_empty(stack)) { | |
354 | g_ptr_array_remove_range(stack->entries, 0, stack_size(stack)); | |
355 | } | |
356 | ||
357 | assert(stack_empty(stack)); | |
358 | } | |
359 | ||
360 | static inline | |
361 | enum bt_ctf_notif_iter_status notif_iter_status_from_m_status( | |
362 | enum bt_ctf_notif_iter_medium_status m_status) | |
363 | { | |
dc77b521 | 364 | return (int) m_status; |
e98a2d6e PP |
365 | } |
366 | ||
367 | static inline | |
368 | size_t buf_size_bits(struct bt_ctf_notif_iter *notit) | |
369 | { | |
370 | return BYTES_TO_BITS(notit->buf.sz); | |
371 | } | |
372 | ||
373 | static inline | |
374 | size_t buf_available_bits(struct bt_ctf_notif_iter *notit) | |
375 | { | |
376 | return buf_size_bits(notit) - notit->buf.at; | |
377 | } | |
378 | ||
379 | static inline | |
380 | size_t packet_at(struct bt_ctf_notif_iter *notit) | |
381 | { | |
382 | return notit->buf.packet_offset + notit->buf.at; | |
383 | } | |
384 | ||
e98a2d6e PP |
385 | static inline |
386 | void buf_consume_bits(struct bt_ctf_notif_iter *notit, size_t incr) | |
387 | { | |
388 | notit->buf.at += incr; | |
389 | } | |
390 | ||
e98a2d6e | 391 | static |
2cf1d51e JG |
392 | enum bt_ctf_notif_iter_status request_medium_bytes( |
393 | struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
394 | { |
395 | uint8_t *buffer_addr; | |
396 | size_t buffer_sz; | |
397 | enum bt_ctf_notif_iter_medium_status m_status; | |
398 | ||
399 | m_status = notit->medium.medops.request_bytes( | |
400 | notit->medium.max_request_sz, &buffer_addr, | |
401 | &buffer_sz, notit->medium.data); | |
402 | if (m_status == BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK) { | |
403 | assert(buffer_sz != 0); | |
404 | ||
405 | /* New packet offset is old one + old size (in bits) */ | |
406 | notit->buf.packet_offset += buf_size_bits(notit); | |
407 | ||
408 | /* Restart at the beginning of the new medium buffer */ | |
409 | notit->buf.at = 0; | |
410 | ||
411 | /* New medium buffer size */ | |
412 | notit->buf.sz = buffer_sz; | |
413 | ||
414 | /* New medium buffer address */ | |
415 | notit->buf.addr = buffer_addr; | |
416 | } | |
417 | ||
418 | return notif_iter_status_from_m_status(m_status); | |
419 | } | |
420 | ||
421 | static inline | |
422 | enum bt_ctf_notif_iter_status buf_ensure_available_bits( | |
423 | struct bt_ctf_notif_iter *notit) | |
424 | { | |
425 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
426 | ||
427 | if (buf_available_bits(notit) == 0) { | |
428 | /* | |
429 | * This _cannot_ return BT_CTF_NOTIF_ITER_STATUS_OK | |
430 | * _and_ no bits. | |
431 | */ | |
432 | status = request_medium_bytes(notit); | |
433 | } | |
434 | ||
435 | return status; | |
436 | } | |
437 | ||
438 | static | |
439 | enum bt_ctf_notif_iter_status read_dscope_begin_state( | |
440 | struct bt_ctf_notif_iter *notit, | |
441 | struct bt_ctf_field_type *dscope_field_type, | |
442 | enum state done_state, enum state continue_state, | |
443 | struct bt_ctf_field **dscope_field) | |
444 | { | |
445 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
446 | enum bt_ctf_btr_status btr_status; | |
447 | size_t consumed_bits; | |
448 | ||
449 | status = buf_ensure_available_bits(notit); | |
450 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
451 | goto end; | |
452 | } | |
453 | ||
454 | bt_put(*dscope_field); | |
455 | notit->cur_dscope_field = dscope_field; | |
456 | consumed_bits = bt_ctf_btr_start(notit->btr, dscope_field_type, | |
457 | notit->buf.addr, notit->buf.at, packet_at(notit), | |
458 | notit->buf.sz, &btr_status); | |
459 | ||
460 | switch (btr_status) { | |
461 | case BT_CTF_BTR_STATUS_OK: | |
462 | /* type was read completely */ | |
463 | notit->state = done_state; | |
464 | break; | |
465 | case BT_CTF_BTR_STATUS_EOF: | |
466 | notit->state = continue_state; | |
467 | break; | |
468 | default: | |
469 | PERR("Binary type reader failed to start\n"); | |
470 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
471 | goto end; | |
472 | } | |
473 | ||
474 | /* Consume bits now since we know we're not in an error state */ | |
475 | buf_consume_bits(notit, consumed_bits); | |
476 | ||
477 | end: | |
478 | return status; | |
479 | } | |
480 | ||
481 | static | |
482 | enum bt_ctf_notif_iter_status read_dscope_continue_state( | |
483 | struct bt_ctf_notif_iter *notit, enum state done_state) | |
484 | { | |
485 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
486 | enum bt_ctf_btr_status btr_status; | |
487 | size_t consumed_bits; | |
488 | ||
489 | status = buf_ensure_available_bits(notit); | |
490 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
491 | goto end; | |
492 | } | |
493 | ||
494 | consumed_bits = bt_ctf_btr_continue(notit->btr, notit->buf.addr, | |
78586d8a | 495 | notit->buf.sz, &btr_status); |
e98a2d6e PP |
496 | |
497 | switch (btr_status) { | |
498 | case BT_CTF_BTR_STATUS_OK: | |
78586d8a | 499 | /* Type was read completely. */ |
e98a2d6e PP |
500 | notit->state = done_state; |
501 | break; | |
502 | case BT_CTF_BTR_STATUS_EOF: | |
78586d8a | 503 | /* Stay in this continue state. */ |
e98a2d6e PP |
504 | break; |
505 | default: | |
506 | PERR("Binary type reader failed to continue\n"); | |
507 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
508 | goto end; | |
509 | } | |
510 | ||
78586d8a | 511 | /* Consume bits now since we know we're not in an error state. */ |
e98a2d6e | 512 | buf_consume_bits(notit, consumed_bits); |
e98a2d6e PP |
513 | end: |
514 | return status; | |
515 | } | |
516 | ||
517 | static | |
518 | void put_event_dscopes(struct bt_ctf_notif_iter *notit) | |
519 | { | |
520 | BT_PUT(notit->dscopes.stream_event_header); | |
521 | BT_PUT(notit->dscopes.stream_event_context); | |
522 | BT_PUT(notit->dscopes.event_context); | |
523 | BT_PUT(notit->dscopes.event_payload); | |
524 | } | |
525 | ||
526 | static | |
527 | void put_all_dscopes(struct bt_ctf_notif_iter *notit) | |
528 | { | |
529 | BT_PUT(notit->dscopes.trace_packet_header); | |
530 | BT_PUT(notit->dscopes.stream_packet_context); | |
531 | put_event_dscopes(notit); | |
532 | } | |
533 | ||
534 | static | |
535 | enum bt_ctf_notif_iter_status read_packet_header_begin_state( | |
536 | struct bt_ctf_notif_iter *notit) | |
537 | { | |
2cf1d51e JG |
538 | struct bt_ctf_field_type *packet_header_type = NULL; |
539 | enum bt_ctf_notif_iter_status ret = BT_CTF_NOTIF_ITER_STATUS_OK; | |
e98a2d6e | 540 | |
2cf1d51e JG |
541 | if (bt_ctf_notif_iter_switch_packet(notit)) { |
542 | ret = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
543 | goto end; | |
544 | } | |
e98a2d6e | 545 | |
2cf1d51e | 546 | /* Packet header type is common to the whole trace. */ |
e98a2d6e | 547 | packet_header_type = bt_ctf_trace_get_packet_header_type( |
78586d8a | 548 | notit->meta.trace); |
e98a2d6e | 549 | if (!packet_header_type) { |
835b2d10 | 550 | notit->state = STATE_AFTER_TRACE_PACKET_HEADER; |
e98a2d6e PP |
551 | goto end; |
552 | } | |
553 | ||
2cf1d51e | 554 | ret = read_dscope_begin_state(notit, packet_header_type, |
78586d8a JG |
555 | STATE_AFTER_TRACE_PACKET_HEADER, |
556 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
557 | ¬it->dscopes.trace_packet_header); | |
e98a2d6e PP |
558 | end: |
559 | BT_PUT(packet_header_type); | |
2cf1d51e | 560 | return ret; |
e98a2d6e PP |
561 | } |
562 | ||
563 | static | |
564 | enum bt_ctf_notif_iter_status read_packet_header_continue_state( | |
565 | struct bt_ctf_notif_iter *notit) | |
566 | { | |
567 | return read_dscope_continue_state(notit, | |
78586d8a | 568 | STATE_AFTER_TRACE_PACKET_HEADER); |
e98a2d6e PP |
569 | } |
570 | ||
571 | static inline | |
572 | bool is_struct_type(struct bt_ctf_field_type *field_type) | |
573 | { | |
78586d8a | 574 | return bt_ctf_field_type_get_type_id(field_type) == |
1487a16a | 575 | BT_CTF_FIELD_TYPE_ID_STRUCT; |
e98a2d6e PP |
576 | } |
577 | ||
578 | static inline | |
579 | bool is_variant_type(struct bt_ctf_field_type *field_type) | |
580 | { | |
78586d8a | 581 | return bt_ctf_field_type_get_type_id(field_type) == |
1487a16a | 582 | BT_CTF_FIELD_TYPE_ID_VARIANT; |
e98a2d6e PP |
583 | } |
584 | ||
5f870343 JG |
585 | static |
586 | struct stream_class_field_path_cache * | |
587 | create_stream_class_field_path_cache_entry( | |
588 | struct bt_ctf_notif_iter *notit, | |
589 | struct bt_ctf_stream_class *stream_class) | |
590 | { | |
591 | int v = -1; | |
592 | int id = -1; | |
593 | int timestamp_end = -1; | |
594 | int packet_size = -1; | |
595 | int content_size = -1; | |
596 | struct stream_class_field_path_cache *cache_entry = g_new0( | |
597 | struct stream_class_field_path_cache, 1); | |
598 | struct bt_ctf_field_type *event_header = NULL, *packet_context = NULL; | |
599 | ||
600 | if (!cache_entry) { | |
601 | goto end; | |
602 | } | |
603 | ||
604 | event_header = bt_ctf_stream_class_get_event_header_type(stream_class); | |
605 | if (event_header && bt_ctf_field_type_is_structure(event_header)) { | |
606 | int i, count; | |
607 | ||
608 | count = bt_ctf_field_type_structure_get_field_count( | |
609 | event_header); | |
610 | if (count < 0) { | |
611 | goto error; | |
612 | } | |
613 | for (i = 0; i < count; i++) { | |
614 | int ret; | |
615 | const char *name; | |
616 | ||
617 | ret = bt_ctf_field_type_structure_get_field( | |
618 | event_header, &name, NULL, i); | |
619 | if (ret) { | |
620 | goto error; | |
621 | } | |
622 | ||
623 | if (v != -1 && id != -1) { | |
624 | break; | |
625 | } | |
626 | if (v == -1 && !strcmp(name, "v")) { | |
627 | v = i; | |
628 | } else if (id == -1 && !strcmp(name, "id")) { | |
629 | id = i; | |
630 | } | |
631 | } | |
632 | } | |
633 | ||
634 | packet_context = bt_ctf_stream_class_get_packet_context_type( | |
635 | stream_class); | |
636 | if (packet_context && bt_ctf_field_type_is_structure(packet_context)) { | |
637 | int i, count; | |
638 | ||
639 | count = bt_ctf_field_type_structure_get_field_count( | |
640 | packet_context); | |
641 | if (count < 0) { | |
642 | goto error; | |
643 | } | |
644 | for (i = 0; i < count; i++) { | |
645 | int ret; | |
646 | const char *name; | |
647 | struct bt_ctf_field_type *field_type; | |
648 | ||
649 | if (timestamp_end != -1 && packet_size != -1 && | |
650 | content_size != -1) { | |
651 | break; | |
652 | } | |
653 | ||
654 | ret = bt_ctf_field_type_structure_get_field( | |
655 | packet_context, &name, &field_type, i); | |
656 | if (ret) { | |
657 | goto error; | |
658 | } | |
659 | ||
660 | if (timestamp_end == -1 && | |
661 | !strcmp(name, "timestamp_end")) { | |
662 | struct field_cb_override *override = g_new0( | |
663 | struct field_cb_override, 1); | |
664 | ||
665 | if (!override) { | |
666 | BT_PUT(field_type); | |
667 | goto error; | |
668 | } | |
669 | ||
670 | override->func = btr_timestamp_end_cb; | |
671 | override->data = notit; | |
672 | ||
673 | g_hash_table_insert(notit->field_overrides, | |
674 | bt_get(field_type), override); | |
675 | ||
676 | timestamp_end = i; | |
677 | } else if (packet_size == -1 && | |
678 | !strcmp(name, "packet_size")) { | |
679 | packet_size = i; | |
680 | } else if (content_size == -1 && | |
681 | !strcmp(name, "content_size")) { | |
682 | content_size = i; | |
683 | } | |
684 | BT_PUT(field_type); | |
685 | } | |
686 | } | |
687 | ||
688 | cache_entry->v = v; | |
689 | cache_entry->id = id; | |
690 | cache_entry->timestamp_end = timestamp_end; | |
691 | cache_entry->packet_size = packet_size; | |
692 | cache_entry->content_size = content_size; | |
693 | end: | |
694 | BT_PUT(event_header); | |
695 | BT_PUT(packet_context); | |
696 | return cache_entry; | |
697 | error: | |
698 | g_free(cache_entry); | |
699 | cache_entry = NULL; | |
700 | goto end; | |
701 | } | |
702 | ||
703 | static | |
704 | struct stream_class_field_path_cache *get_stream_class_field_path_cache( | |
705 | struct bt_ctf_notif_iter *notit, | |
706 | struct bt_ctf_stream_class *stream_class) | |
707 | { | |
708 | bool cache_entry_found; | |
709 | struct stream_class_field_path_cache *cache_entry; | |
710 | ||
711 | cache_entry_found = g_hash_table_lookup_extended( | |
712 | notit->sc_field_path_caches, | |
713 | stream_class, NULL, (gpointer) &cache_entry); | |
714 | if (unlikely(!cache_entry_found)) { | |
715 | cache_entry = create_stream_class_field_path_cache_entry(notit, | |
716 | stream_class); | |
717 | g_hash_table_insert(notit->sc_field_path_caches, | |
718 | bt_get(stream_class), (gpointer) cache_entry); | |
719 | } | |
720 | ||
721 | return cache_entry; | |
722 | } | |
723 | ||
e98a2d6e | 724 | static inline |
835b2d10 JG |
725 | enum bt_ctf_notif_iter_status set_current_stream_class( |
726 | struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
727 | { |
728 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
5f870343 | 729 | struct bt_ctf_field_type *packet_header_type = NULL; |
e98a2d6e PP |
730 | struct bt_ctf_field_type *stream_id_field_type = NULL; |
731 | uint64_t stream_id; | |
732 | ||
5f870343 JG |
733 | /* Clear the current stream class field path cache. */ |
734 | notit->cur_sc_field_path_cache = NULL; | |
735 | ||
e98a2d6e PP |
736 | /* Is there any "stream_id" field in the packet header? */ |
737 | packet_header_type = bt_ctf_trace_get_packet_header_type( | |
78586d8a | 738 | notit->meta.trace); |
e98a2d6e PP |
739 | if (!packet_header_type) { |
740 | PERR("Failed to retrieve trace's packet header type\n"); | |
741 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
742 | goto end; | |
743 | } | |
744 | ||
745 | assert(is_struct_type(packet_header_type)); | |
746 | ||
747 | // TODO: optimalize! | |
748 | stream_id_field_type = | |
78586d8a JG |
749 | bt_ctf_field_type_structure_get_field_type_by_name( |
750 | packet_header_type, "stream_id"); | |
e98a2d6e PP |
751 | if (stream_id_field_type) { |
752 | /* Find appropriate stream class using current stream ID */ | |
e98a2d6e | 753 | int ret; |
5f870343 | 754 | struct bt_ctf_field *stream_id_field = NULL; |
e98a2d6e PP |
755 | |
756 | assert(notit->dscopes.trace_packet_header); | |
757 | ||
758 | // TODO: optimalize! | |
759 | stream_id_field = bt_ctf_field_structure_get_field( | |
78586d8a | 760 | notit->dscopes.trace_packet_header, "stream_id"); |
e98a2d6e PP |
761 | assert(stream_id_field); |
762 | ret = bt_ctf_field_unsigned_integer_get_value( | |
78586d8a | 763 | stream_id_field, &stream_id); |
e98a2d6e PP |
764 | assert(!ret); |
765 | BT_PUT(stream_id_field); | |
766 | } else { | |
767 | /* Only one stream: pick the first stream class */ | |
768 | assert(bt_ctf_trace_get_stream_class_count( | |
78586d8a | 769 | notit->meta.trace) == 1); |
e98a2d6e PP |
770 | stream_id = 0; |
771 | } | |
772 | ||
773 | BT_PUT(notit->meta.stream_class); | |
5b29e799 | 774 | notit->meta.stream_class = bt_ctf_trace_get_stream_class_by_id( |
78586d8a | 775 | notit->meta.trace, stream_id); |
e98a2d6e PP |
776 | if (!notit->meta.stream_class) { |
777 | PERR("Cannot find stream class with ID %" PRIu64 "\n", | |
778 | stream_id); | |
779 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
780 | goto end; | |
781 | } | |
782 | ||
5f870343 JG |
783 | /* |
784 | * Retrieve (or lazily create) the current stream class field path | |
785 | * cache. | |
786 | */ | |
787 | notit->cur_sc_field_path_cache = get_stream_class_field_path_cache( | |
788 | notit, notit->meta.stream_class); | |
789 | if (!notit->cur_sc_field_path_cache) { | |
790 | PERR("Failed to retrieve stream class field path cache\n"); | |
791 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
792 | goto end; | |
793 | } | |
e98a2d6e PP |
794 | end: |
795 | BT_PUT(packet_header_type); | |
796 | BT_PUT(stream_id_field_type); | |
797 | ||
798 | return status; | |
799 | } | |
800 | ||
801 | static | |
802 | enum bt_ctf_notif_iter_status after_packet_header_state( | |
803 | struct bt_ctf_notif_iter *notit) | |
804 | { | |
805 | enum bt_ctf_notif_iter_status status; | |
806 | ||
807 | status = set_current_stream_class(notit); | |
808 | if (status == BT_CTF_NOTIF_ITER_STATUS_OK) { | |
809 | notit->state = STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN; | |
810 | } | |
811 | ||
812 | return status; | |
813 | } | |
814 | ||
815 | static | |
816 | enum bt_ctf_notif_iter_status read_packet_context_begin_state( | |
817 | struct bt_ctf_notif_iter *notit) | |
818 | { | |
819 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
820 | struct bt_ctf_field_type *packet_context_type; | |
821 | ||
822 | assert(notit->meta.stream_class); | |
823 | packet_context_type = bt_ctf_stream_class_get_packet_context_type( | |
78586d8a | 824 | notit->meta.stream_class); |
e98a2d6e | 825 | if (!packet_context_type) { |
835b2d10 | 826 | notit->state = STATE_AFTER_STREAM_PACKET_CONTEXT; |
e98a2d6e PP |
827 | goto end; |
828 | } | |
829 | ||
830 | status = read_dscope_begin_state(notit, packet_context_type, | |
78586d8a JG |
831 | STATE_AFTER_STREAM_PACKET_CONTEXT, |
832 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
833 | ¬it->dscopes.stream_packet_context); | |
e98a2d6e PP |
834 | |
835 | end: | |
836 | BT_PUT(packet_context_type); | |
e98a2d6e PP |
837 | return status; |
838 | } | |
839 | ||
840 | static | |
841 | enum bt_ctf_notif_iter_status read_packet_context_continue_state( | |
842 | struct bt_ctf_notif_iter *notit) | |
843 | { | |
844 | return read_dscope_continue_state(notit, | |
78586d8a | 845 | STATE_AFTER_STREAM_PACKET_CONTEXT); |
e98a2d6e PP |
846 | } |
847 | ||
78586d8a | 848 | static |
e98a2d6e PP |
849 | enum bt_ctf_notif_iter_status set_current_packet_content_sizes( |
850 | struct bt_ctf_notif_iter *notit) | |
851 | { | |
852 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
853 | struct bt_ctf_field *packet_size_field = NULL; | |
854 | struct bt_ctf_field *content_size_field = NULL; | |
855 | uint64_t content_size = -1, packet_size = -1; | |
856 | ||
857 | assert(notit->dscopes.stream_packet_context); | |
858 | ||
e98a2d6e | 859 | packet_size_field = bt_ctf_field_structure_get_field( |
78586d8a | 860 | notit->dscopes.stream_packet_context, "packet_size"); |
e98a2d6e | 861 | content_size_field = bt_ctf_field_structure_get_field( |
78586d8a | 862 | notit->dscopes.stream_packet_context, "content_size"); |
e98a2d6e PP |
863 | if (packet_size_field) { |
864 | int ret = bt_ctf_field_unsigned_integer_get_value( | |
78586d8a | 865 | packet_size_field, &packet_size); |
e98a2d6e | 866 | |
78586d8a | 867 | assert(!ret); |
e98a2d6e PP |
868 | if (packet_size == 0) { |
869 | PERR("Decoded packet size is 0\n"); | |
870 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
871 | goto end; | |
872 | } else if ((packet_size % 8) != 0) { | |
873 | PERR("Decoded packet size is not a multiple of 8\n"); | |
874 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
875 | goto end; | |
876 | } | |
877 | } | |
78586d8a | 878 | |
e98a2d6e PP |
879 | if (content_size_field) { |
880 | int ret = bt_ctf_field_unsigned_integer_get_value( | |
881 | content_size_field, &content_size); | |
78586d8a | 882 | |
e98a2d6e PP |
883 | assert(!ret); |
884 | } else { | |
885 | content_size = packet_size; | |
886 | } | |
887 | ||
888 | notit->cur_packet_size = packet_size; | |
889 | notit->cur_content_size = content_size; | |
e98a2d6e PP |
890 | end: |
891 | BT_PUT(packet_size_field); | |
892 | BT_PUT(content_size_field); | |
e98a2d6e PP |
893 | return status; |
894 | } | |
895 | ||
896 | static | |
897 | enum bt_ctf_notif_iter_status after_packet_context_state( | |
898 | struct bt_ctf_notif_iter *notit) | |
899 | { | |
900 | enum bt_ctf_notif_iter_status status; | |
901 | ||
902 | status = set_current_packet_content_sizes(notit); | |
903 | if (status == BT_CTF_NOTIF_ITER_STATUS_OK) { | |
904 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
905 | } | |
906 | ||
907 | return status; | |
908 | } | |
909 | ||
910 | static | |
911 | enum bt_ctf_notif_iter_status read_event_header_begin_state( | |
912 | struct bt_ctf_notif_iter *notit) | |
913 | { | |
914 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
915 | struct bt_ctf_field_type *event_header_type = NULL; | |
916 | ||
917 | /* Check if we have some content left */ | |
918 | if (notit->cur_content_size >= 0) { | |
919 | if (packet_at(notit) == notit->cur_content_size) { | |
920 | /* No more events! */ | |
921 | notit->state = STATE_EMIT_NOTIF_END_OF_PACKET; | |
922 | goto end; | |
923 | } else if (packet_at(notit) > notit->cur_content_size) { | |
924 | /* That's not supposed to happen */ | |
925 | PERR("Cursor passed packet's content size:\n"); | |
78586d8a | 926 | PERR("\tDecoded content size: %zu\n", |
e98a2d6e | 927 | notit->cur_content_size); |
78586d8a | 928 | PERR("\tCursor position: %zu\n", packet_at(notit)); |
e98a2d6e PP |
929 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; |
930 | goto end; | |
931 | } | |
932 | } | |
933 | ||
934 | event_header_type = bt_ctf_stream_class_get_event_header_type( | |
935 | notit->meta.stream_class); | |
936 | if (!event_header_type) { | |
835b2d10 | 937 | notit->state = STATE_AFTER_STREAM_EVENT_HEADER; |
e98a2d6e PP |
938 | goto end; |
939 | } | |
940 | ||
941 | put_event_dscopes(notit); | |
942 | status = read_dscope_begin_state(notit, event_header_type, | |
943 | STATE_AFTER_STREAM_EVENT_HEADER, | |
944 | STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE, | |
945 | ¬it->dscopes.stream_event_header); | |
e98a2d6e PP |
946 | end: |
947 | BT_PUT(event_header_type); | |
948 | ||
949 | return status; | |
950 | } | |
951 | ||
952 | static | |
953 | enum bt_ctf_notif_iter_status read_event_header_continue_state( | |
954 | struct bt_ctf_notif_iter *notit) | |
955 | { | |
956 | return read_dscope_continue_state(notit, | |
957 | STATE_AFTER_STREAM_EVENT_HEADER); | |
958 | } | |
959 | ||
960 | static inline | |
961 | enum bt_ctf_notif_iter_status set_current_event_class(struct bt_ctf_notif_iter *notit) | |
962 | { | |
963 | /* | |
964 | * The assert() calls in this function are okay because it is | |
965 | * assumed here that all the metadata objects have been | |
966 | * validated for CTF correctness before decoding actual streams. | |
967 | */ | |
968 | ||
969 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
970 | struct bt_ctf_field_type *event_header_type; | |
971 | struct bt_ctf_field_type *id_field_type = NULL; | |
972 | struct bt_ctf_field_type *v_field_type = NULL; | |
973 | uint64_t event_id = -1ULL; | |
974 | int ret; | |
975 | ||
976 | event_header_type = bt_ctf_stream_class_get_event_header_type( | |
977 | notit->meta.stream_class); | |
978 | if (!event_header_type) { | |
979 | PERR("Failed to retrieve stream class's event header type\n"); | |
980 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
981 | goto end; | |
982 | } | |
983 | ||
984 | /* Is there any "id"/"v" field in the event header? */ | |
985 | assert(is_struct_type(event_header_type)); | |
986 | id_field_type = bt_ctf_field_type_structure_get_field_type_by_name( | |
987 | event_header_type, "id"); | |
988 | v_field_type = bt_ctf_field_type_structure_get_field_type_by_name( | |
989 | event_header_type, "v"); | |
990 | assert(notit->dscopes.stream_event_header); | |
991 | if (v_field_type) { | |
992 | /* | |
993 | * _ _____ _____ | |
994 | * | | |_ _|_ _| __ __ _ | |
995 | * | | | | | || '_ \ / _` | | |
996 | * | |___| | | || | | | (_| | S P E C I A L | |
997 | * |_____|_| |_||_| |_|\__, | C A S E ™ | |
998 | * |___/ | |
999 | */ | |
1000 | struct bt_ctf_field *v_field = NULL; | |
1001 | struct bt_ctf_field *v_struct_field = NULL; | |
1002 | struct bt_ctf_field *v_struct_id_field = NULL; | |
1003 | ||
1004 | // TODO: optimalize! | |
1005 | v_field = bt_ctf_field_structure_get_field( | |
1006 | notit->dscopes.stream_event_header, "v"); | |
1007 | assert(v_field); | |
1008 | ||
1009 | v_struct_field = | |
1010 | bt_ctf_field_variant_get_current_field(v_field); | |
1011 | if (!v_struct_field) { | |
1012 | goto end_v_field_type; | |
1013 | } | |
1014 | ||
1015 | // TODO: optimalize! | |
1016 | v_struct_id_field = | |
1017 | bt_ctf_field_structure_get_field(v_struct_field, "id"); | |
1018 | if (!v_struct_id_field) { | |
1019 | goto end_v_field_type; | |
1020 | } | |
1021 | ||
1022 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1023 | v_struct_id_field, &event_id); | |
1024 | if (ret) { | |
1025 | event_id = -1ULL; | |
1026 | } | |
1027 | ||
1028 | end_v_field_type: | |
1029 | BT_PUT(v_field); | |
1030 | BT_PUT(v_struct_field); | |
1031 | BT_PUT(v_struct_id_field); | |
1032 | } | |
1033 | ||
1034 | if (id_field_type && event_id == -1ULL) { | |
1035 | /* Check "id" field */ | |
1036 | struct bt_ctf_field *id_field = NULL; | |
1037 | int ret; | |
1038 | ||
1039 | // TODO: optimalize! | |
1040 | id_field = bt_ctf_field_structure_get_field( | |
1041 | notit->dscopes.stream_event_header, "id"); | |
1042 | assert(id_field); | |
1043 | assert(bt_ctf_field_is_integer(id_field) || | |
1044 | bt_ctf_field_is_enumeration(id_field)); | |
1045 | ||
1046 | if (bt_ctf_field_is_integer(id_field)) { | |
1047 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1048 | id_field, &event_id); | |
1049 | } else { | |
1050 | struct bt_ctf_field *container; | |
1051 | ||
1052 | container = bt_ctf_field_enumeration_get_container( | |
1053 | id_field); | |
1054 | assert(container); | |
1055 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1056 | container, &event_id); | |
1057 | BT_PUT(container); | |
1058 | } | |
1059 | assert(!ret); | |
1060 | BT_PUT(id_field); | |
1061 | } | |
1062 | ||
1063 | if (event_id == -1ULL) { | |
1064 | /* Event ID not found: single event? */ | |
1065 | assert(bt_ctf_stream_class_get_event_class_count( | |
1066 | notit->meta.stream_class) == 1); | |
1067 | event_id = 0; | |
1068 | } | |
1069 | ||
1070 | BT_PUT(notit->meta.event_class); | |
1071 | notit->meta.event_class = bt_ctf_stream_class_get_event_class_by_id( | |
1072 | notit->meta.stream_class, event_id); | |
1073 | if (!notit->meta.event_class) { | |
1074 | PERR("Cannot find event class with ID %" PRIu64 "\n", event_id); | |
1075 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
1076 | goto end; | |
1077 | } | |
1078 | ||
1079 | end: | |
1080 | BT_PUT(event_header_type); | |
1081 | BT_PUT(id_field_type); | |
1082 | BT_PUT(v_field_type); | |
1083 | ||
1084 | return status; | |
1085 | } | |
1086 | ||
1087 | static | |
1088 | enum bt_ctf_notif_iter_status after_event_header_state( | |
1089 | struct bt_ctf_notif_iter *notit) | |
1090 | { | |
1091 | enum bt_ctf_notif_iter_status status; | |
1092 | ||
e98a2d6e PP |
1093 | status = set_current_event_class(notit); |
1094 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
1095 | PERR("Failed to set current event class\n"); | |
1096 | goto end; | |
1097 | } | |
1098 | ||
1099 | notit->state = STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN; | |
1100 | ||
1101 | end: | |
1102 | return status; | |
1103 | } | |
1104 | ||
1105 | static | |
1106 | enum bt_ctf_notif_iter_status read_stream_event_context_begin_state( | |
1107 | struct bt_ctf_notif_iter *notit) | |
1108 | { | |
1109 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1110 | struct bt_ctf_field_type *stream_event_context_type; | |
1111 | ||
1112 | stream_event_context_type = bt_ctf_stream_class_get_event_context_type( | |
1113 | notit->meta.stream_class); | |
1114 | if (!stream_event_context_type) { | |
835b2d10 | 1115 | notit->state = STATE_DSCOPE_EVENT_CONTEXT_BEGIN; |
e98a2d6e PP |
1116 | goto end; |
1117 | } | |
1118 | ||
1119 | status = read_dscope_begin_state(notit, stream_event_context_type, | |
1120 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN, | |
1121 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE, | |
1122 | ¬it->dscopes.stream_event_context); | |
1123 | ||
1124 | end: | |
1125 | BT_PUT(stream_event_context_type); | |
1126 | ||
1127 | return status; | |
1128 | } | |
1129 | ||
1130 | static | |
1131 | enum bt_ctf_notif_iter_status read_stream_event_context_continue_state( | |
1132 | struct bt_ctf_notif_iter *notit) | |
1133 | { | |
1134 | return read_dscope_continue_state(notit, | |
1135 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN); | |
1136 | } | |
1137 | ||
1138 | static | |
1139 | enum bt_ctf_notif_iter_status read_event_context_begin_state( | |
1140 | struct bt_ctf_notif_iter *notit) | |
1141 | { | |
1142 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1143 | struct bt_ctf_field_type *event_context_type; | |
1144 | ||
1145 | event_context_type = bt_ctf_event_class_get_context_type( | |
1146 | notit->meta.event_class); | |
1147 | if (!event_context_type) { | |
835b2d10 | 1148 | notit->state = STATE_DSCOPE_EVENT_PAYLOAD_BEGIN; |
e98a2d6e PP |
1149 | goto end; |
1150 | } | |
e98a2d6e PP |
1151 | status = read_dscope_begin_state(notit, event_context_type, |
1152 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, | |
1153 | STATE_DSCOPE_EVENT_CONTEXT_CONTINUE, | |
1154 | ¬it->dscopes.event_context); | |
1155 | ||
1156 | end: | |
1157 | BT_PUT(event_context_type); | |
1158 | ||
1159 | return status; | |
1160 | } | |
1161 | ||
1162 | static | |
1163 | enum bt_ctf_notif_iter_status read_event_context_continue_state( | |
1164 | struct bt_ctf_notif_iter *notit) | |
1165 | { | |
1166 | return read_dscope_continue_state(notit, | |
1167 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN); | |
1168 | } | |
1169 | ||
1170 | static | |
1171 | enum bt_ctf_notif_iter_status read_event_payload_begin_state( | |
1172 | struct bt_ctf_notif_iter *notit) | |
1173 | { | |
1174 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1175 | struct bt_ctf_field_type *event_payload_type; | |
1176 | ||
1177 | event_payload_type = bt_ctf_event_class_get_payload_type( | |
1178 | notit->meta.event_class); | |
1179 | if (!event_payload_type) { | |
835b2d10 | 1180 | notit->state = STATE_EMIT_NOTIF_EVENT; |
e98a2d6e PP |
1181 | goto end; |
1182 | } | |
1183 | ||
1184 | status = read_dscope_begin_state(notit, event_payload_type, | |
1185 | STATE_EMIT_NOTIF_EVENT, | |
1186 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
1187 | ¬it->dscopes.event_payload); | |
1188 | ||
1189 | end: | |
1190 | BT_PUT(event_payload_type); | |
1191 | ||
1192 | return status; | |
1193 | } | |
1194 | ||
1195 | static | |
1196 | enum bt_ctf_notif_iter_status read_event_payload_continue_state( | |
1197 | struct bt_ctf_notif_iter *notit) | |
1198 | { | |
1199 | return read_dscope_continue_state(notit, STATE_EMIT_NOTIF_EVENT); | |
1200 | } | |
1201 | ||
1202 | static | |
1203 | enum bt_ctf_notif_iter_status skip_packet_padding_state( | |
1204 | struct bt_ctf_notif_iter *notit) | |
1205 | { | |
1206 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1207 | size_t bits_to_skip; | |
1208 | ||
1209 | assert(notit->cur_packet_size > 0); | |
1210 | bits_to_skip = notit->cur_packet_size - packet_at(notit); | |
1211 | if (bits_to_skip == 0) { | |
1212 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1213 | goto end; | |
1214 | } else { | |
1215 | size_t bits_to_consume; | |
1216 | status = buf_ensure_available_bits(notit); | |
1217 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
1218 | goto end; | |
1219 | } | |
1220 | ||
1221 | bits_to_consume = MIN(buf_available_bits(notit), bits_to_skip); | |
1222 | buf_consume_bits(notit, bits_to_consume); | |
1223 | bits_to_skip = notit->cur_packet_size - packet_at(notit); | |
1224 | if (bits_to_skip == 0) { | |
1225 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1226 | goto end; | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | end: | |
1231 | return status; | |
1232 | } | |
1233 | ||
1234 | static inline | |
1235 | enum bt_ctf_notif_iter_status handle_state(struct bt_ctf_notif_iter *notit) | |
1236 | { | |
1237 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1238 | ||
1239 | PDBG("Handling state %d\n", notit->state); | |
1240 | ||
1241 | // TODO: optimalize! | |
1242 | switch (notit->state) { | |
1243 | case STATE_INIT: | |
1244 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1245 | break; | |
1246 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
1247 | status = read_packet_header_begin_state(notit); | |
1248 | break; | |
1249 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
1250 | status = read_packet_header_continue_state(notit); | |
1251 | break; | |
1252 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
1253 | status = after_packet_header_state(notit); | |
1254 | break; | |
1255 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
1256 | status = read_packet_context_begin_state(notit); | |
1257 | break; | |
1258 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
1259 | status = read_packet_context_continue_state(notit); | |
1260 | break; | |
1261 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
1262 | status = after_packet_context_state(notit); | |
1263 | break; | |
1264 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
1265 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1266 | break; | |
1267 | case STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN: | |
1268 | status = read_event_header_begin_state(notit); | |
1269 | break; | |
1270 | case STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE: | |
1271 | status = read_event_header_continue_state(notit); | |
1272 | break; | |
1273 | case STATE_AFTER_STREAM_EVENT_HEADER: | |
1274 | status = after_event_header_state(notit); | |
1275 | break; | |
1276 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN: | |
1277 | status = read_stream_event_context_begin_state(notit); | |
1278 | break; | |
1279 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE: | |
1280 | status = read_stream_event_context_continue_state(notit); | |
1281 | break; | |
1282 | case STATE_DSCOPE_EVENT_CONTEXT_BEGIN: | |
1283 | status = read_event_context_begin_state(notit); | |
1284 | break; | |
1285 | case STATE_DSCOPE_EVENT_CONTEXT_CONTINUE: | |
1286 | status = read_event_context_continue_state(notit); | |
1287 | break; | |
1288 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: | |
1289 | status = read_event_payload_begin_state(notit); | |
1290 | break; | |
1291 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
1292 | status = read_event_payload_continue_state(notit); | |
1293 | break; | |
1294 | case STATE_EMIT_NOTIF_EVENT: | |
1295 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1296 | break; | |
1297 | case STATE_SKIP_PACKET_PADDING: | |
1298 | status = skip_packet_padding_state(notit); | |
1299 | break; | |
1300 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
1301 | notit->state = STATE_SKIP_PACKET_PADDING; | |
1302 | break; | |
1303 | } | |
1304 | ||
1305 | return status; | |
1306 | } | |
1307 | ||
2cf1d51e JG |
1308 | /** |
1309 | * Resets the internal state of a CTF notification iterator. | |
2cf1d51e JG |
1310 | */ |
1311 | static | |
e98a2d6e PP |
1312 | void bt_ctf_notif_iter_reset(struct bt_ctf_notif_iter *notit) |
1313 | { | |
1314 | assert(notit); | |
1315 | stack_clear(notit->stack); | |
1316 | BT_PUT(notit->meta.stream_class); | |
1317 | BT_PUT(notit->meta.event_class); | |
1318 | BT_PUT(notit->packet); | |
1319 | put_all_dscopes(notit); | |
1320 | notit->buf.addr = NULL; | |
1321 | notit->buf.sz = 0; | |
1322 | notit->buf.at = 0; | |
1323 | notit->buf.packet_offset = 0; | |
1324 | notit->state = STATE_INIT; | |
1325 | notit->cur_content_size = -1; | |
1326 | notit->cur_packet_size = -1; | |
1327 | } | |
1328 | ||
2cf1d51e JG |
1329 | static |
1330 | int bt_ctf_notif_iter_switch_packet(struct bt_ctf_notif_iter *notit) | |
1331 | { | |
1332 | int ret = 0; | |
1333 | ||
1334 | assert(notit); | |
1335 | stack_clear(notit->stack); | |
1336 | BT_PUT(notit->meta.stream_class); | |
1337 | BT_PUT(notit->meta.event_class); | |
1338 | BT_PUT(notit->packet); | |
5f870343 | 1339 | BT_PUT(notit->cur_timestamp_end); |
2cf1d51e JG |
1340 | put_all_dscopes(notit); |
1341 | ||
1342 | /* | |
1343 | * Adjust current buffer so that addr points to the beginning of the new | |
1344 | * packet. | |
1345 | */ | |
1346 | if (notit->buf.addr) { | |
1347 | size_t consumed_bytes = (size_t) (notit->buf.at / CHAR_BIT); | |
1348 | ||
1349 | /* Packets are assumed to start on a byte frontier. */ | |
1350 | if (notit->buf.at % CHAR_BIT) { | |
1351 | ret = -1; | |
1352 | goto end; | |
1353 | } | |
1354 | ||
1355 | notit->buf.addr += consumed_bytes; | |
1356 | notit->buf.sz -= consumed_bytes; | |
1357 | notit->buf.at = 0; | |
1358 | notit->buf.packet_offset = 0; | |
1359 | } | |
1360 | ||
1361 | notit->cur_content_size = -1; | |
1362 | notit->cur_packet_size = -1; | |
5f870343 | 1363 | notit->cur_sc_field_path_cache = NULL; |
2cf1d51e JG |
1364 | end: |
1365 | return ret; | |
1366 | } | |
1367 | ||
e98a2d6e PP |
1368 | static |
1369 | struct bt_ctf_field *get_next_field(struct bt_ctf_notif_iter *notit) | |
1370 | { | |
1371 | struct bt_ctf_field *next_field = NULL; | |
1372 | struct bt_ctf_field *base_field; | |
1373 | struct bt_ctf_field_type *base_type; | |
1374 | size_t index; | |
1375 | ||
1376 | assert(!stack_empty(notit->stack)); | |
1377 | index = stack_top(notit->stack)->index; | |
1378 | base_field = stack_top(notit->stack)->base; | |
1379 | base_type = bt_ctf_field_get_type(base_field); | |
1380 | if (!base_type) { | |
1381 | PERR("Failed to get base field's type\n"); | |
1382 | goto end; | |
1383 | } | |
1384 | ||
1385 | switch (bt_ctf_field_type_get_type_id(base_type)) { | |
1487a16a | 1386 | case BT_CTF_FIELD_TYPE_ID_STRUCT: |
e98a2d6e PP |
1387 | next_field = bt_ctf_field_structure_get_field_by_index( |
1388 | base_field, index); | |
1389 | break; | |
1487a16a | 1390 | case BT_CTF_FIELD_TYPE_ID_ARRAY: |
e98a2d6e PP |
1391 | next_field = bt_ctf_field_array_get_field(base_field, index); |
1392 | break; | |
1487a16a | 1393 | case BT_CTF_FIELD_TYPE_ID_SEQUENCE: |
e98a2d6e PP |
1394 | next_field = bt_ctf_field_sequence_get_field(base_field, index); |
1395 | break; | |
1487a16a | 1396 | case BT_CTF_FIELD_TYPE_ID_VARIANT: |
e98a2d6e PP |
1397 | next_field = bt_ctf_field_variant_get_current_field(base_field); |
1398 | break; | |
1399 | default: | |
1400 | assert(false); | |
1401 | break; | |
1402 | } | |
1403 | ||
1404 | end: | |
1405 | BT_PUT(base_type); | |
1406 | ||
1407 | return next_field; | |
1408 | } | |
1409 | ||
c44c3e70 JG |
1410 | static |
1411 | void update_clock_state(uint64_t *state, | |
1412 | struct bt_ctf_field *value_field) | |
1413 | { | |
1414 | struct bt_ctf_field_type *value_type = NULL; | |
1415 | uint64_t requested_new_value; | |
1416 | uint64_t requested_new_value_mask; | |
1417 | uint64_t cur_value_masked; | |
1418 | int requested_new_value_size; | |
1419 | int ret; | |
1420 | ||
1421 | value_type = bt_ctf_field_get_type(value_field); | |
1422 | assert(value_type); | |
1423 | ||
1424 | requested_new_value_size = | |
1425 | bt_ctf_field_type_integer_get_size(value_type); | |
1426 | assert(requested_new_value_size > 0); | |
1427 | ||
1428 | ret = bt_ctf_field_unsigned_integer_get_value(value_field, | |
1429 | &requested_new_value); | |
1430 | assert(!ret); | |
1431 | ||
1432 | /* | |
1433 | * Special case for a 64-bit new value, which is the limit | |
1434 | * of a clock value as of this version: overwrite the | |
1435 | * current value directly. | |
1436 | */ | |
1437 | if (requested_new_value_size == 64) { | |
1438 | *state = requested_new_value; | |
1439 | goto end; | |
1440 | } | |
1441 | ||
1442 | requested_new_value_mask = (1ULL << requested_new_value_size) - 1; | |
1443 | cur_value_masked = *state & requested_new_value_mask; | |
1444 | ||
1445 | if (requested_new_value < cur_value_masked) { | |
1446 | /* | |
1447 | * It looks like a wrap happened on the number of bits | |
1448 | * of the requested new value. Assume that the clock | |
1449 | * value wrapped only one time. | |
1450 | */ | |
1451 | *state += requested_new_value_mask + 1; | |
1452 | } | |
1453 | ||
1454 | /* Clear the low bits of the current clock value. */ | |
1455 | *state &= ~requested_new_value_mask; | |
1456 | ||
1457 | /* Set the low bits of the current clock value. */ | |
1458 | *state |= requested_new_value; | |
1459 | end: | |
1460 | bt_put(value_type); | |
1461 | } | |
1462 | ||
1463 | static | |
1464 | enum bt_ctf_btr_status update_clock(struct bt_ctf_notif_iter *notit, | |
c44c3e70 JG |
1465 | struct bt_ctf_field *int_field) |
1466 | { | |
ac0c6bdd | 1467 | gboolean clock_class_found; |
c44c3e70 | 1468 | uint64_t *clock_state; |
f45bfe88 | 1469 | struct bt_ctf_field_type *int_field_type = NULL; |
c44c3e70 | 1470 | enum bt_ctf_btr_status ret = BT_CTF_BTR_STATUS_OK; |
f45bfe88 | 1471 | struct bt_ctf_clock_class *clock_class = NULL; |
c44c3e70 | 1472 | |
f45bfe88 PP |
1473 | int_field_type = bt_ctf_field_get_type(int_field); |
1474 | if (unlikely(!int_field_type)) { | |
1475 | goto end; | |
1476 | } | |
1477 | ||
1478 | clock_class = bt_ctf_field_type_integer_get_mapped_clock_class( | |
1479 | int_field_type); | |
ac0c6bdd | 1480 | if (likely(!clock_class)) { |
f45bfe88 | 1481 | goto end; |
c44c3e70 JG |
1482 | } |
1483 | ||
ac0c6bdd PP |
1484 | clock_class_found = g_hash_table_lookup_extended(notit->clock_states, |
1485 | clock_class, NULL, (gpointer) &clock_state); | |
1486 | if (unlikely(!clock_class_found)) { | |
1487 | const char *clock_class_name = | |
1488 | bt_ctf_clock_class_get_name(clock_class); | |
c44c3e70 | 1489 | |
ac0c6bdd PP |
1490 | PERR("Unknown clock class %s mapped to integer encountered in stream\n", |
1491 | clock_class_name ? : "NULL"); | |
c44c3e70 JG |
1492 | ret = BT_CTF_BTR_STATUS_ERROR; |
1493 | goto end; | |
1494 | } | |
1495 | ||
1496 | if (unlikely(!clock_state)) { | |
1497 | clock_state = g_new0(uint64_t, 1); | |
1498 | if (!clock_state) { | |
1499 | ret = BT_CTF_BTR_STATUS_ENOMEM; | |
1500 | goto end; | |
1501 | } | |
ac0c6bdd | 1502 | g_hash_table_insert(notit->clock_states, bt_get(clock_class), |
c44c3e70 JG |
1503 | clock_state); |
1504 | } | |
1505 | ||
1506 | /* Update the clock's state. */ | |
1507 | update_clock_state(clock_state, int_field); | |
1508 | end: | |
f45bfe88 | 1509 | bt_put(int_field_type); |
ac0c6bdd | 1510 | bt_put(clock_class); |
c44c3e70 JG |
1511 | return ret; |
1512 | } | |
1513 | ||
e98a2d6e | 1514 | static |
5f870343 JG |
1515 | enum bt_ctf_btr_status btr_unsigned_int_common(uint64_t value, |
1516 | struct bt_ctf_field_type *type, void *data, | |
f45bfe88 | 1517 | struct bt_ctf_field **out_int_field) |
e98a2d6e PP |
1518 | { |
1519 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1520 | struct bt_ctf_field *field = NULL; | |
1521 | struct bt_ctf_field *int_field = NULL; | |
1522 | struct bt_ctf_notif_iter *notit = data; | |
1523 | int ret; | |
1524 | ||
5f870343 | 1525 | /* Create next field */ |
e98a2d6e PP |
1526 | field = get_next_field(notit); |
1527 | if (!field) { | |
5f870343 | 1528 | PERR("Failed to get next field (unsigned int)\n"); |
e98a2d6e | 1529 | status = BT_CTF_BTR_STATUS_ERROR; |
c44c3e70 | 1530 | goto end_no_put; |
e98a2d6e PP |
1531 | } |
1532 | ||
1533 | switch(bt_ctf_field_type_get_type_id(type)) { | |
1487a16a | 1534 | case BT_CTF_FIELD_TYPE_ID_INTEGER: |
e98a2d6e PP |
1535 | /* Integer field is created field */ |
1536 | BT_MOVE(int_field, field); | |
c44c3e70 | 1537 | bt_get(type); |
e98a2d6e | 1538 | break; |
1487a16a | 1539 | case BT_CTF_FIELD_TYPE_ID_ENUM: |
e98a2d6e | 1540 | int_field = bt_ctf_field_enumeration_get_container(field); |
c44c3e70 | 1541 | type = bt_ctf_field_get_type(int_field); |
e98a2d6e PP |
1542 | break; |
1543 | default: | |
c44c3e70 JG |
1544 | assert(0); |
1545 | type = NULL; | |
e98a2d6e PP |
1546 | break; |
1547 | } | |
1548 | ||
1549 | if (!int_field) { | |
1550 | PERR("Failed to get integer field\n"); | |
1551 | status = BT_CTF_BTR_STATUS_ERROR; | |
1552 | goto end; | |
1553 | } | |
1554 | ||
5f870343 | 1555 | ret = bt_ctf_field_unsigned_integer_set_value(int_field, value); |
e98a2d6e PP |
1556 | assert(!ret); |
1557 | stack_top(notit->stack)->index++; | |
f45bfe88 | 1558 | *out_int_field = int_field; |
5f870343 | 1559 | |
e98a2d6e PP |
1560 | end: |
1561 | BT_PUT(field); | |
c44c3e70 JG |
1562 | BT_PUT(type); |
1563 | end_no_put: | |
e98a2d6e PP |
1564 | return status; |
1565 | } | |
1566 | ||
5f870343 JG |
1567 | static |
1568 | enum bt_ctf_btr_status btr_timestamp_end_cb(void *value, | |
1569 | struct bt_ctf_field_type *type, void *data) | |
1570 | { | |
1571 | enum bt_ctf_btr_status status; | |
1572 | struct bt_ctf_field *field = NULL; | |
1573 | struct bt_ctf_notif_iter *notit = data; | |
1574 | ||
1575 | status = btr_unsigned_int_common(*((uint64_t *) value), type, data, | |
1576 | &field); | |
1577 | ||
1578 | /* Set as the current packet's timestamp_end field. */ | |
1579 | BT_MOVE(notit->cur_timestamp_end, field); | |
1580 | return status; | |
1581 | } | |
1582 | ||
e98a2d6e PP |
1583 | static |
1584 | enum bt_ctf_btr_status btr_unsigned_int_cb(uint64_t value, | |
1585 | struct bt_ctf_field_type *type, void *data) | |
5f870343 JG |
1586 | { |
1587 | struct bt_ctf_notif_iter *notit = data; | |
1588 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1589 | struct bt_ctf_field *field = NULL; | |
1590 | struct field_cb_override *override; | |
1591 | ||
1592 | override = g_hash_table_lookup(notit->field_overrides, | |
1593 | type); | |
1594 | if (unlikely(override)) { | |
1595 | status = override->func(&value, type, override->data); | |
1596 | goto end; | |
1597 | } | |
1598 | ||
1599 | status = btr_unsigned_int_common(value, type, data, &field); | |
1600 | if (status != BT_CTF_BTR_STATUS_OK) { | |
1601 | goto end; | |
1602 | } | |
1603 | ||
f45bfe88 | 1604 | status = update_clock(notit, field); |
5f870343 JG |
1605 | BT_PUT(field); |
1606 | end: | |
1607 | return status; | |
1608 | } | |
1609 | ||
1610 | static | |
1611 | enum bt_ctf_btr_status btr_signed_int_cb(int64_t value, | |
1612 | struct bt_ctf_field_type *type, void *data) | |
e98a2d6e PP |
1613 | { |
1614 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1615 | struct bt_ctf_field *field = NULL; | |
1616 | struct bt_ctf_field *int_field = NULL; | |
1617 | struct bt_ctf_notif_iter *notit = data; | |
1618 | int ret; | |
1619 | ||
5f870343 | 1620 | /* create next field */ |
e98a2d6e PP |
1621 | field = get_next_field(notit); |
1622 | if (!field) { | |
5f870343 | 1623 | PERR("Failed to get next field (signed int)\n"); |
e98a2d6e | 1624 | status = BT_CTF_BTR_STATUS_ERROR; |
c44c3e70 | 1625 | goto end_no_put; |
e98a2d6e PP |
1626 | } |
1627 | ||
1628 | switch(bt_ctf_field_type_get_type_id(type)) { | |
1487a16a | 1629 | case BT_CTF_FIELD_TYPE_ID_INTEGER: |
e98a2d6e PP |
1630 | /* Integer field is created field */ |
1631 | BT_MOVE(int_field, field); | |
c44c3e70 | 1632 | bt_get(type); |
e98a2d6e | 1633 | break; |
1487a16a | 1634 | case BT_CTF_FIELD_TYPE_ID_ENUM: |
e98a2d6e | 1635 | int_field = bt_ctf_field_enumeration_get_container(field); |
c44c3e70 | 1636 | type = bt_ctf_field_get_type(int_field); |
e98a2d6e PP |
1637 | break; |
1638 | default: | |
c44c3e70 JG |
1639 | assert(0); |
1640 | type = NULL; | |
e98a2d6e PP |
1641 | break; |
1642 | } | |
1643 | ||
1644 | if (!int_field) { | |
1645 | PERR("Failed to get integer field\n"); | |
1646 | status = BT_CTF_BTR_STATUS_ERROR; | |
1647 | goto end; | |
1648 | } | |
1649 | ||
5f870343 | 1650 | ret = bt_ctf_field_signed_integer_set_value(int_field, value); |
e98a2d6e PP |
1651 | assert(!ret); |
1652 | stack_top(notit->stack)->index++; | |
f45bfe88 | 1653 | status = update_clock(notit, int_field); |
e98a2d6e PP |
1654 | end: |
1655 | BT_PUT(field); | |
1656 | BT_PUT(int_field); | |
c44c3e70 JG |
1657 | BT_PUT(type); |
1658 | end_no_put: | |
e98a2d6e PP |
1659 | return status; |
1660 | } | |
1661 | ||
1662 | static | |
1663 | enum bt_ctf_btr_status btr_floating_point_cb(double value, | |
1664 | struct bt_ctf_field_type *type, void *data) | |
1665 | { | |
1666 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1667 | struct bt_ctf_field *field = NULL; | |
1668 | struct bt_ctf_notif_iter *notit = data; | |
1669 | int ret; | |
1670 | ||
1671 | /* Create next field */ | |
1672 | field = get_next_field(notit); | |
1673 | if (!field) { | |
1674 | PERR("Failed to get next field (floating point number)\n"); | |
1675 | status = BT_CTF_BTR_STATUS_ERROR; | |
1676 | goto end; | |
1677 | } | |
1678 | ||
1679 | ret = bt_ctf_field_floating_point_set_value(field, value); | |
1680 | assert(!ret); | |
1681 | stack_top(notit->stack)->index++; | |
1682 | ||
1683 | end: | |
1684 | BT_PUT(field); | |
1685 | ||
1686 | return status; | |
1687 | } | |
1688 | ||
1689 | static | |
1690 | enum bt_ctf_btr_status btr_string_begin_cb( | |
1691 | struct bt_ctf_field_type *type, void *data) | |
1692 | { | |
1693 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1694 | struct bt_ctf_field *field = NULL; | |
1695 | struct bt_ctf_notif_iter *notit = data; | |
1696 | int ret; | |
1697 | ||
1698 | /* Create next field */ | |
1699 | field = get_next_field(notit); | |
1700 | if (!field) { | |
1701 | PERR("Failed to get next field (string)\n"); | |
1702 | status = BT_CTF_BTR_STATUS_ERROR; | |
1703 | goto end; | |
1704 | } | |
1705 | ||
1706 | /* | |
1707 | * Push on stack. Not a compound type per se, but we know that only | |
1708 | * btr_string_cb() may be called between this call and a subsequent | |
1709 | * call to btr_string_end_cb(). | |
1710 | */ | |
1711 | ret = stack_push(notit->stack, field); | |
1712 | if (ret) { | |
1713 | PERR("Failed to push string field onto the stack\n"); | |
1714 | status = BT_CTF_BTR_STATUS_ERROR; | |
1715 | goto end; | |
1716 | } | |
1717 | ||
e5df2ae3 JG |
1718 | /* |
1719 | * Initialize string field payload to an empty string since in the | |
1720 | * case of a length 0 string the btr_string_cb won't be called and | |
1721 | * we will end up with an unset string payload. | |
1722 | */ | |
1723 | ret = bt_ctf_field_string_set_value(field, ""); | |
1724 | if (ret) { | |
1725 | PERR("Failed to initialize string field\n"); | |
1726 | status = BT_CTF_BTR_STATUS_ERROR; | |
1727 | goto end; | |
1728 | } | |
1729 | ||
e98a2d6e PP |
1730 | end: |
1731 | BT_PUT(field); | |
1732 | ||
1733 | return status; | |
1734 | } | |
1735 | ||
1736 | static | |
1737 | enum bt_ctf_btr_status btr_string_cb(const char *value, | |
1738 | size_t len, struct bt_ctf_field_type *type, void *data) | |
1739 | { | |
1740 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1741 | struct bt_ctf_field *field = NULL; | |
1742 | struct bt_ctf_notif_iter *notit = data; | |
1743 | int ret; | |
1744 | ||
1745 | /* Get string field */ | |
1746 | field = stack_top(notit->stack)->base; | |
1747 | assert(field); | |
1748 | ||
1749 | /* Append current string */ | |
1750 | ret = bt_ctf_field_string_append_len(field, value, len); | |
1751 | if (ret) { | |
1752 | PERR("Failed to append a string to a string field\n"); | |
1753 | status = BT_CTF_BTR_STATUS_ERROR; | |
1754 | goto end; | |
1755 | } | |
1756 | ||
1757 | end: | |
1758 | return status; | |
1759 | } | |
1760 | ||
1761 | static | |
1762 | enum bt_ctf_btr_status btr_string_end_cb( | |
1763 | struct bt_ctf_field_type *type, void *data) | |
1764 | { | |
1765 | struct bt_ctf_notif_iter *notit = data; | |
1766 | ||
1767 | /* Pop string field */ | |
1768 | stack_pop(notit->stack); | |
1769 | ||
1770 | /* Go to next field */ | |
1771 | stack_top(notit->stack)->index++; | |
1772 | ||
1773 | return BT_CTF_BTR_STATUS_OK; | |
1774 | } | |
1775 | ||
1776 | enum bt_ctf_btr_status btr_compound_begin_cb( | |
1777 | struct bt_ctf_field_type *type, void *data) | |
1778 | { | |
1779 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1780 | struct bt_ctf_notif_iter *notit = data; | |
1781 | struct bt_ctf_field *field; | |
1782 | int ret; | |
1783 | ||
1784 | /* Create field */ | |
1785 | if (stack_empty(notit->stack)) { | |
1786 | /* Root: create dynamic scope field */ | |
1787 | *notit->cur_dscope_field = bt_ctf_field_create(type); | |
1788 | field = *notit->cur_dscope_field; | |
1789 | ||
1790 | /* | |
1791 | * Field will be put at the end of this function | |
1792 | * (stack_push() will take one reference, but this | |
1793 | * reference is lost upon the equivalent stack_pop() | |
1794 | * later), so also get it for our context to own it. | |
1795 | */ | |
1796 | bt_get(*notit->cur_dscope_field); | |
1797 | } else { | |
1798 | field = get_next_field(notit); | |
1799 | } | |
1800 | ||
1801 | if (!field) { | |
1802 | PERR("Failed to get next field or create dynamic scope field\n"); | |
1803 | status = BT_CTF_BTR_STATUS_ERROR; | |
1804 | goto end; | |
1805 | } | |
1806 | ||
1807 | /* Push field */ | |
1808 | ret = stack_push(notit->stack, field); | |
1809 | if (ret) { | |
1810 | PERR("Failed to push compound field onto the stack\n"); | |
1811 | status = BT_CTF_BTR_STATUS_ERROR; | |
1812 | goto end; | |
1813 | } | |
1814 | ||
1815 | end: | |
1816 | BT_PUT(field); | |
1817 | ||
1818 | return status; | |
1819 | } | |
1820 | ||
1821 | enum bt_ctf_btr_status btr_compound_end_cb( | |
1822 | struct bt_ctf_field_type *type, void *data) | |
1823 | { | |
1824 | struct bt_ctf_notif_iter *notit = data; | |
1825 | ||
1826 | assert(!stack_empty(notit->stack)); | |
1827 | ||
1828 | /* Pop stack */ | |
1829 | stack_pop(notit->stack); | |
1830 | ||
1831 | /* If the stack is not empty, increment the base's index */ | |
1832 | if (!stack_empty(notit->stack)) { | |
1833 | stack_top(notit->stack)->index++; | |
1834 | } | |
1835 | ||
1836 | return BT_CTF_BTR_STATUS_OK; | |
1837 | } | |
1838 | ||
1839 | static | |
1840 | struct bt_ctf_field *resolve_field(struct bt_ctf_notif_iter *notit, | |
1841 | struct bt_ctf_field_path *path) | |
1842 | { | |
1843 | struct bt_ctf_field *field = NULL; | |
1844 | unsigned int i; | |
1845 | ||
1846 | switch (bt_ctf_field_path_get_root_scope(path)) { | |
1847 | case BT_CTF_SCOPE_TRACE_PACKET_HEADER: | |
1848 | field = notit->dscopes.trace_packet_header; | |
1849 | break; | |
1850 | case BT_CTF_SCOPE_STREAM_PACKET_CONTEXT: | |
1851 | field = notit->dscopes.stream_packet_context; | |
1852 | break; | |
1853 | case BT_CTF_SCOPE_STREAM_EVENT_HEADER: | |
1854 | field = notit->dscopes.stream_event_header; | |
1855 | break; | |
1856 | case BT_CTF_SCOPE_STREAM_EVENT_CONTEXT: | |
1857 | field = notit->dscopes.stream_event_context; | |
1858 | break; | |
1859 | case BT_CTF_SCOPE_EVENT_CONTEXT: | |
1860 | field = notit->dscopes.event_context; | |
1861 | break; | |
1862 | case BT_CTF_SCOPE_EVENT_FIELDS: | |
1863 | field = notit->dscopes.event_payload; | |
1864 | break; | |
1865 | default: | |
1866 | break; | |
1867 | } | |
1868 | ||
1869 | if (!field) { | |
1870 | goto end; | |
1871 | } | |
1872 | ||
1873 | bt_get(field); | |
1874 | ||
1875 | for (i = 0; i < bt_ctf_field_path_get_index_count(path); ++i) { | |
1876 | struct bt_ctf_field *next_field = NULL; | |
1877 | struct bt_ctf_field_type *field_type; | |
1878 | int index = bt_ctf_field_path_get_index(path, i); | |
1879 | ||
1880 | field_type = bt_ctf_field_get_type(field); | |
1881 | if (!field_type) { | |
1882 | BT_PUT(field); | |
1883 | goto end; | |
1884 | } | |
1885 | ||
1886 | if (is_struct_type(field_type)) { | |
1887 | next_field = bt_ctf_field_structure_get_field_by_index( | |
1888 | field, index); | |
1889 | } else if (is_variant_type(field_type)) { | |
1890 | next_field = | |
1891 | bt_ctf_field_variant_get_current_field(field); | |
1892 | } | |
1893 | ||
1894 | BT_PUT(field); | |
1895 | BT_PUT(field_type); | |
1896 | ||
1897 | if (!next_field) { | |
1898 | goto end; | |
1899 | } | |
1900 | ||
1901 | /* Move next field -> field */ | |
1902 | BT_MOVE(field, next_field); | |
1903 | } | |
1904 | ||
1905 | end: | |
1906 | return field; | |
1907 | } | |
1908 | ||
1909 | static | |
1910 | int64_t btr_get_sequence_length_cb(struct bt_ctf_field_type *type, void *data) | |
1911 | { | |
1912 | int64_t ret = -1; | |
1913 | int iret; | |
1914 | struct bt_ctf_field_path *field_path; | |
1915 | struct bt_ctf_notif_iter *notit = data; | |
2cf1d51e | 1916 | struct bt_ctf_field *length_field = NULL; |
e98a2d6e PP |
1917 | uint64_t length; |
1918 | ||
1919 | field_path = bt_ctf_field_type_sequence_get_length_field_path(type); | |
1920 | if (!field_path) { | |
1921 | goto end; | |
1922 | } | |
1923 | ||
2cf1d51e JG |
1924 | length_field = resolve_field(notit, field_path); |
1925 | if (!length_field) { | |
e98a2d6e PP |
1926 | goto end; |
1927 | } | |
1928 | ||
2cf1d51e | 1929 | iret = bt_ctf_field_unsigned_integer_get_value(length_field, &length); |
e98a2d6e PP |
1930 | if (iret) { |
1931 | goto end; | |
1932 | } | |
1933 | ||
2cf1d51e JG |
1934 | iret = bt_ctf_field_sequence_set_length(stack_top(notit->stack)->base, |
1935 | length_field); | |
1936 | if (iret) { | |
1937 | goto end; | |
1938 | } | |
e98a2d6e PP |
1939 | ret = (int64_t) length; |
1940 | ||
1941 | end: | |
2cf1d51e | 1942 | BT_PUT(length_field); |
e98a2d6e PP |
1943 | BT_PUT(field_path); |
1944 | ||
1945 | return ret; | |
1946 | } | |
1947 | ||
1948 | static | |
1949 | struct bt_ctf_field_type *btr_get_variant_type_cb( | |
1950 | struct bt_ctf_field_type *type, void *data) | |
1951 | { | |
1952 | struct bt_ctf_field_path *path; | |
1953 | struct bt_ctf_notif_iter *notit = data; | |
1954 | struct bt_ctf_field *tag_field = NULL; | |
1955 | struct bt_ctf_field *selected_field = NULL; | |
1956 | struct bt_ctf_field_type *selected_field_type = NULL; | |
1957 | ||
1958 | path = bt_ctf_field_type_variant_get_tag_field_path(type); | |
1959 | if (!path) { | |
1960 | goto end; | |
1961 | } | |
1962 | ||
1963 | tag_field = resolve_field(notit, path); | |
1964 | if (!tag_field) { | |
1965 | goto end; | |
1966 | } | |
1967 | ||
1968 | /* | |
1969 | * We found the enumeration tag field instance which should be | |
1970 | * able to select a current field for this variant. This | |
1971 | * callback function we're in is called _after_ | |
1972 | * compound_begin(), so the current stack top's base field is | |
1973 | * the variant field in question. We get the selected field here | |
1974 | * thanks to this tag field (thus creating the selected field), | |
1975 | * which will also provide us with its type. Then, this field | |
1976 | * will remain the current selected one until the next callback | |
1977 | * function call which is used to fill the current selected | |
1978 | * field. | |
1979 | */ | |
1980 | selected_field = bt_ctf_field_variant_get_field( | |
1981 | stack_top(notit->stack)->base, tag_field); | |
1982 | if (!selected_field) { | |
1983 | goto end; | |
1984 | } | |
1985 | ||
1986 | selected_field_type = bt_ctf_field_get_type(selected_field); | |
1987 | ||
1988 | end: | |
1989 | BT_PUT(tag_field); | |
1990 | BT_PUT(selected_field); | |
f77ae72a | 1991 | BT_PUT(path); |
e98a2d6e PP |
1992 | |
1993 | return selected_field_type; | |
1994 | } | |
1995 | ||
1556a1af JG |
1996 | static |
1997 | int set_event_clocks(struct bt_ctf_event *event, | |
1998 | struct bt_ctf_notif_iter *notit) | |
1999 | { | |
2000 | int ret; | |
2001 | GHashTableIter iter; | |
ac0c6bdd | 2002 | struct bt_ctf_clock_class *clock_class; |
1556a1af JG |
2003 | uint64_t *clock_state; |
2004 | ||
2005 | g_hash_table_iter_init(&iter, notit->clock_states); | |
2006 | ||
ac0c6bdd | 2007 | while (g_hash_table_iter_next(&iter, (gpointer) &clock_class, |
1556a1af JG |
2008 | (gpointer) &clock_state)) { |
2009 | struct bt_ctf_clock_value *clock_value; | |
2010 | ||
ac0c6bdd PP |
2011 | clock_value = bt_ctf_clock_value_create(clock_class, |
2012 | *clock_state); | |
1556a1af JG |
2013 | if (!clock_value) { |
2014 | ret = -1; | |
2015 | goto end; | |
2016 | } | |
3f3c46b8 | 2017 | ret = bt_ctf_event_set_clock_value(event, clock_value); |
1556a1af JG |
2018 | bt_put(clock_value); |
2019 | if (ret) { | |
2020 | goto end; | |
2021 | } | |
2022 | } | |
2023 | ret = 0; | |
2024 | end: | |
2025 | return ret; | |
2026 | } | |
2027 | ||
78586d8a JG |
2028 | static |
2029 | struct bt_ctf_event *create_event(struct bt_ctf_notif_iter *notit) | |
e98a2d6e | 2030 | { |
e98a2d6e | 2031 | int ret; |
78586d8a | 2032 | struct bt_ctf_event *event; |
e98a2d6e | 2033 | |
78586d8a | 2034 | /* Create event object. */ |
e98a2d6e PP |
2035 | event = bt_ctf_event_create(notit->meta.event_class); |
2036 | if (!event) { | |
2037 | goto error; | |
2038 | } | |
2039 | ||
78586d8a | 2040 | /* Set header, stream event context, context, and payload fields. */ |
e98a2d6e PP |
2041 | ret = bt_ctf_event_set_header(event, |
2042 | notit->dscopes.stream_event_header); | |
2043 | if (ret) { | |
2044 | goto error; | |
2045 | } | |
2046 | ||
2047 | ret = bt_ctf_event_set_stream_event_context(event, | |
2048 | notit->dscopes.stream_event_context); | |
2049 | if (ret) { | |
2050 | goto error; | |
2051 | } | |
2052 | ||
2053 | ret = bt_ctf_event_set_event_context(event, | |
2054 | notit->dscopes.event_context); | |
2055 | if (ret) { | |
2056 | goto error; | |
2057 | } | |
2058 | ||
9ac68eb1 | 2059 | ret = bt_ctf_event_set_event_payload(event, |
e98a2d6e PP |
2060 | notit->dscopes.event_payload); |
2061 | if (ret) { | |
2062 | goto error; | |
2063 | } | |
2064 | ||
1556a1af JG |
2065 | ret = set_event_clocks(event, notit); |
2066 | if (ret) { | |
2067 | goto error; | |
2068 | } | |
2069 | ||
78586d8a | 2070 | /* Associate with current packet. */ |
e98a2d6e PP |
2071 | assert(notit->packet); |
2072 | ret = bt_ctf_event_set_packet(event, notit->packet); | |
2073 | if (ret) { | |
2074 | goto error; | |
2075 | } | |
2076 | ||
2077 | goto end; | |
e98a2d6e PP |
2078 | error: |
2079 | BT_PUT(event); | |
e98a2d6e PP |
2080 | end: |
2081 | return event; | |
2082 | } | |
2083 | ||
78586d8a JG |
2084 | static |
2085 | void create_packet(struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
2086 | { |
2087 | int ret; | |
2088 | struct bt_ctf_stream *stream = NULL; | |
2089 | struct bt_ctf_packet *packet = NULL; | |
2090 | ||
2091 | /* Ask the user for the stream */ | |
2092 | stream = notit->medium.medops.get_stream(notit->meta.stream_class, | |
78586d8a | 2093 | notit->medium.data); |
e98a2d6e PP |
2094 | if (!stream) { |
2095 | goto error; | |
2096 | } | |
2097 | ||
2098 | /* Create packet */ | |
2099 | packet = bt_ctf_packet_create(stream); | |
2100 | if (!packet) { | |
2101 | goto error; | |
2102 | } | |
2103 | ||
2104 | /* Set packet's context and header fields */ | |
2105 | if (notit->dscopes.trace_packet_header) { | |
2106 | ret = bt_ctf_packet_set_header(packet, | |
78586d8a | 2107 | notit->dscopes.trace_packet_header); |
e98a2d6e PP |
2108 | if (ret) { |
2109 | goto error; | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | if (notit->dscopes.stream_packet_context) { | |
2114 | ret = bt_ctf_packet_set_context(packet, | |
78586d8a | 2115 | notit->dscopes.stream_packet_context); |
e98a2d6e PP |
2116 | if (ret) { |
2117 | goto error; | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | goto end; | |
e98a2d6e PP |
2122 | error: |
2123 | BT_PUT(packet); | |
e98a2d6e PP |
2124 | end: |
2125 | BT_MOVE(notit->packet, packet); | |
2126 | } | |
2127 | ||
78586d8a JG |
2128 | static |
2129 | void notify_new_packet(struct bt_ctf_notif_iter *notit, | |
2130 | struct bt_notification **notification) | |
e98a2d6e | 2131 | { |
78586d8a | 2132 | struct bt_notification *ret; |
e98a2d6e | 2133 | |
78586d8a | 2134 | /* Initialize the iterator's current packet */ |
e98a2d6e PP |
2135 | create_packet(notit); |
2136 | if (!notit->packet) { | |
78586d8a | 2137 | return; |
e98a2d6e PP |
2138 | } |
2139 | ||
ea0e619e | 2140 | ret = bt_notification_packet_begin_create(notit->packet); |
78586d8a JG |
2141 | if (!ret) { |
2142 | return; | |
2143 | } | |
2144 | *notification = ret; | |
e98a2d6e PP |
2145 | } |
2146 | ||
78586d8a JG |
2147 | static |
2148 | void notify_end_of_packet(struct bt_ctf_notif_iter *notit, | |
2149 | struct bt_notification **notification) | |
e98a2d6e | 2150 | { |
78586d8a | 2151 | struct bt_notification *ret; |
e98a2d6e | 2152 | |
e98a2d6e | 2153 | if (!notit->packet) { |
78586d8a | 2154 | return; |
e98a2d6e PP |
2155 | } |
2156 | ||
78586d8a JG |
2157 | ret = bt_notification_packet_end_create(notit->packet); |
2158 | if (!ret) { | |
2159 | return; | |
2160 | } | |
2161 | BT_PUT(notit->packet); | |
2162 | *notification = ret; | |
e98a2d6e PP |
2163 | } |
2164 | ||
78586d8a JG |
2165 | static |
2166 | void notify_event(struct bt_ctf_notif_iter *notit, | |
0982a26d | 2167 | struct bt_clock_class_priority_map *cc_prio_map, |
78586d8a | 2168 | struct bt_notification **notification) |
e98a2d6e | 2169 | { |
78586d8a JG |
2170 | struct bt_ctf_event *event; |
2171 | struct bt_notification *ret = NULL; | |
e98a2d6e PP |
2172 | |
2173 | /* Create event */ | |
2174 | event = create_event(notit); | |
2175 | if (!event) { | |
78586d8a | 2176 | goto end; |
e98a2d6e | 2177 | } |
e98a2d6e | 2178 | |
0982a26d | 2179 | ret = bt_notification_event_create(event, cc_prio_map); |
78586d8a JG |
2180 | if (!ret) { |
2181 | goto end; | |
e98a2d6e | 2182 | } |
78586d8a JG |
2183 | *notification = ret; |
2184 | end: | |
2185 | BT_PUT(event); | |
e98a2d6e PP |
2186 | } |
2187 | ||
c44c3e70 JG |
2188 | static |
2189 | int init_clock_states(GHashTable *clock_states, struct bt_ctf_trace *trace) | |
2190 | { | |
ac0c6bdd | 2191 | int clock_class_count, i, ret = 0; |
c44c3e70 | 2192 | |
ac0c6bdd PP |
2193 | clock_class_count = bt_ctf_trace_get_clock_class_count(trace); |
2194 | if (clock_class_count <= 0) { | |
c44c3e70 JG |
2195 | ret = -1; |
2196 | goto end; | |
2197 | } | |
2198 | ||
ac0c6bdd PP |
2199 | for (i = 0; i < clock_class_count; i++) { |
2200 | struct bt_ctf_clock_class *clock_class; | |
c44c3e70 | 2201 | |
9ac68eb1 | 2202 | clock_class = bt_ctf_trace_get_clock_class_by_index(trace, i); |
ac0c6bdd | 2203 | if (!clock_class) { |
c44c3e70 JG |
2204 | ret = -1; |
2205 | goto end; | |
2206 | } | |
2207 | ||
ac0c6bdd PP |
2208 | g_hash_table_insert(clock_states, bt_get(clock_class), NULL); |
2209 | bt_put(clock_class); | |
c44c3e70 JG |
2210 | } |
2211 | end: | |
2212 | return ret; | |
2213 | } | |
2214 | ||
5f870343 JG |
2215 | static |
2216 | void init_trace_field_path_cache(struct bt_ctf_trace *trace, | |
2217 | struct trace_field_path_cache *trace_field_path_cache) | |
2218 | { | |
2219 | int stream_id = -1; | |
2220 | int stream_instance_id = -1; | |
2221 | int i, count; | |
2222 | struct bt_ctf_field_type *packet_header = NULL; | |
2223 | ||
2224 | packet_header = bt_ctf_trace_get_packet_header_type(trace); | |
2225 | if (!packet_header) { | |
2226 | goto end; | |
2227 | } | |
2228 | ||
2229 | if (!bt_ctf_field_type_is_structure(packet_header)) { | |
2230 | goto end; | |
2231 | } | |
2232 | ||
2233 | count = bt_ctf_field_type_structure_get_field_count(packet_header); | |
2234 | if (count < 0) { | |
2235 | goto end; | |
2236 | } | |
2237 | ||
2238 | for (i = 0; (i < count && (stream_id == -1 || stream_instance_id == -1)); i++) { | |
2239 | int ret; | |
2240 | const char *field_name; | |
2241 | ||
2242 | ret = bt_ctf_field_type_structure_get_field(packet_header, | |
2243 | &field_name, NULL, i); | |
2244 | if (ret) { | |
2245 | goto end; | |
2246 | } | |
2247 | ||
2248 | if (stream_id == -1 && !strcmp(field_name, "stream_id")) { | |
2249 | stream_id = i; | |
2250 | } else if (stream_instance_id == -1 && | |
2251 | !strcmp(field_name, "stream_instance_id")) { | |
2252 | stream_instance_id = i; | |
2253 | } | |
2254 | } | |
2255 | end: | |
2256 | trace_field_path_cache->stream_id = stream_id; | |
2257 | trace_field_path_cache->stream_instance_id = stream_instance_id; | |
2258 | BT_PUT(packet_header); | |
2259 | } | |
2260 | ||
c44c3e70 | 2261 | BT_HIDDEN |
e98a2d6e PP |
2262 | struct bt_ctf_notif_iter *bt_ctf_notif_iter_create(struct bt_ctf_trace *trace, |
2263 | size_t max_request_sz, | |
2264 | struct bt_ctf_notif_iter_medium_ops medops, | |
2265 | void *data, FILE *err_stream) | |
2266 | { | |
c44c3e70 | 2267 | int ret; |
e98a2d6e PP |
2268 | struct bt_ctf_notif_iter *notit = NULL; |
2269 | struct bt_ctf_btr_cbs cbs = { | |
2270 | .types = { | |
2271 | .signed_int = btr_signed_int_cb, | |
2272 | .unsigned_int = btr_unsigned_int_cb, | |
2273 | .floating_point = btr_floating_point_cb, | |
2274 | .string_begin = btr_string_begin_cb, | |
2275 | .string = btr_string_cb, | |
2276 | .string_end = btr_string_end_cb, | |
2277 | .compound_begin = btr_compound_begin_cb, | |
2278 | .compound_end = btr_compound_end_cb, | |
2279 | }, | |
2280 | .query = { | |
2281 | .get_sequence_length = btr_get_sequence_length_cb, | |
2282 | .get_variant_type = btr_get_variant_type_cb, | |
2283 | }, | |
2284 | }; | |
2285 | ||
2286 | assert(trace); | |
2287 | assert(medops.request_bytes); | |
f3985ab1 | 2288 | assert(medops.get_stream); |
e98a2d6e PP |
2289 | notit = g_new0(struct bt_ctf_notif_iter, 1); |
2290 | if (!notit) { | |
2291 | PERR("Failed to allocate memory for CTF notification iterator\n"); | |
2292 | goto end; | |
2293 | } | |
c44c3e70 JG |
2294 | notit->clock_states = g_hash_table_new_full(g_direct_hash, |
2295 | g_direct_equal, bt_put, g_free); | |
2296 | if (!notit->clock_states) { | |
2297 | PERR("Failed to create hash table\n"); | |
2298 | goto error; | |
2299 | } | |
2300 | ret = init_clock_states(notit->clock_states, trace); | |
2301 | if (ret) { | |
2302 | PERR("Failed to initialize stream clock states\n"); | |
2303 | goto error; | |
2304 | } | |
35d47007 | 2305 | notit->meta.trace = bt_get(trace); |
e98a2d6e PP |
2306 | notit->medium.medops = medops; |
2307 | notit->medium.max_request_sz = max_request_sz; | |
2308 | notit->medium.data = data; | |
2309 | notit->err_stream = err_stream; | |
2310 | notit->stack = stack_new(notit); | |
2311 | if (!notit->stack) { | |
2312 | PERR("Failed to create stack\n"); | |
c44c3e70 | 2313 | goto error; |
e98a2d6e PP |
2314 | } |
2315 | ||
2316 | notit->btr = bt_ctf_btr_create(cbs, notit, err_stream); | |
2317 | if (!notit->btr) { | |
2318 | PERR("Failed to create binary type reader\n"); | |
c44c3e70 | 2319 | goto error; |
e98a2d6e PP |
2320 | } |
2321 | ||
2322 | bt_ctf_notif_iter_reset(notit); | |
2323 | ||
5f870343 JG |
2324 | init_trace_field_path_cache(trace, ¬it->trace_field_path_cache); |
2325 | notit->sc_field_path_caches = g_hash_table_new_full(g_direct_hash, | |
2326 | g_direct_equal, bt_put, g_free); | |
2327 | if (!notit->sc_field_path_caches) { | |
2328 | PERR("Failed to create stream class field path caches\n"); | |
2329 | goto error; | |
2330 | } | |
2331 | ||
2332 | notit->field_overrides = g_hash_table_new_full(g_direct_hash, | |
2333 | g_direct_equal, bt_put, g_free); | |
2334 | if (!notit->field_overrides) { | |
2335 | goto error; | |
2336 | } | |
2337 | ||
e98a2d6e PP |
2338 | end: |
2339 | return notit; | |
c44c3e70 JG |
2340 | error: |
2341 | bt_ctf_notif_iter_destroy(notit); | |
2342 | notit = NULL; | |
2343 | goto end; | |
e98a2d6e PP |
2344 | } |
2345 | ||
2346 | void bt_ctf_notif_iter_destroy(struct bt_ctf_notif_iter *notit) | |
2347 | { | |
2348 | BT_PUT(notit->meta.trace); | |
2349 | BT_PUT(notit->meta.stream_class); | |
2350 | BT_PUT(notit->meta.event_class); | |
2351 | BT_PUT(notit->packet); | |
5f870343 | 2352 | BT_PUT(notit->cur_timestamp_end); |
e98a2d6e PP |
2353 | put_all_dscopes(notit); |
2354 | ||
2355 | if (notit->stack) { | |
2356 | stack_destroy(notit->stack); | |
2357 | } | |
2358 | ||
2359 | if (notit->btr) { | |
2360 | bt_ctf_btr_destroy(notit->btr); | |
2361 | } | |
2362 | ||
c44c3e70 JG |
2363 | if (notit->clock_states) { |
2364 | g_hash_table_destroy(notit->clock_states); | |
2365 | } | |
5f870343 JG |
2366 | |
2367 | if (notit->sc_field_path_caches) { | |
2368 | g_hash_table_destroy(notit->sc_field_path_caches); | |
2369 | } | |
2370 | ||
2371 | if (notit->field_overrides) { | |
2372 | g_hash_table_destroy(notit->field_overrides); | |
2373 | } | |
e98a2d6e PP |
2374 | g_free(notit); |
2375 | } | |
2376 | ||
2377 | enum bt_ctf_notif_iter_status bt_ctf_notif_iter_get_next_notification( | |
2378 | struct bt_ctf_notif_iter *notit, | |
0982a26d | 2379 | struct bt_clock_class_priority_map *cc_prio_map, |
78586d8a | 2380 | struct bt_notification **notification) |
e98a2d6e PP |
2381 | { |
2382 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
2383 | ||
2384 | assert(notit); | |
2385 | assert(notification); | |
2386 | ||
2387 | while (true) { | |
2388 | status = handle_state(notit); | |
7cdc2bab MD |
2389 | if (status == BT_CTF_NOTIF_ITER_STATUS_AGAIN) { |
2390 | PDBG("Medium operation reported \"try again later\""); | |
2391 | goto end; | |
2392 | } | |
e98a2d6e PP |
2393 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { |
2394 | if (status == BT_CTF_NOTIF_ITER_STATUS_EOF) { | |
78586d8a | 2395 | PDBG("Medium operation reported end of stream\n"); |
e98a2d6e PP |
2396 | } else { |
2397 | PERR("Failed to handle state:\n"); | |
78586d8a | 2398 | PERR("\tState: %d\n", notit->state); |
e98a2d6e PP |
2399 | } |
2400 | goto end; | |
2401 | } | |
2402 | ||
2403 | switch (notit->state) { | |
2404 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
2405 | PDBG("Emitting new packet notification\n"); | |
2406 | notify_new_packet(notit, notification); | |
2407 | if (!*notification) { | |
2408 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2409 | } | |
2410 | goto end; | |
2411 | case STATE_EMIT_NOTIF_EVENT: | |
2412 | PDBG("Emitting event notification\n"); | |
0982a26d | 2413 | notify_event(notit, cc_prio_map, notification); |
e98a2d6e PP |
2414 | if (!*notification) { |
2415 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2416 | } | |
2417 | goto end; | |
2418 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
5f870343 JG |
2419 | /* Update clock with timestamp_end field. */ |
2420 | if (notit->cur_timestamp_end) { | |
2421 | enum bt_ctf_btr_status btr_status; | |
2422 | struct bt_ctf_field_type *field_type = | |
2423 | bt_ctf_field_get_type( | |
2424 | notit->cur_timestamp_end); | |
2425 | ||
f45bfe88 PP |
2426 | btr_status = update_clock(notit, |
2427 | notit->cur_timestamp_end); | |
5f870343 JG |
2428 | BT_PUT(field_type); |
2429 | if (btr_status != BT_CTF_BTR_STATUS_OK) { | |
2430 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2431 | goto end; | |
2432 | } | |
2433 | } | |
2434 | ||
e98a2d6e PP |
2435 | PDBG("Emitting end of packet notification\n"); |
2436 | notify_end_of_packet(notit, notification); | |
2437 | if (!*notification) { | |
2438 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2439 | } | |
2440 | goto end; | |
2441 | default: | |
2442 | /* Non-emitting state: continue */ | |
2443 | break; | |
2444 | } | |
2445 | } | |
2446 | ||
2447 | end: | |
2448 | return status; | |
2449 | } | |
87187cbf PP |
2450 | |
2451 | BT_HIDDEN | |
2452 | enum bt_ctf_notif_iter_status bt_ctf_notif_iter_get_packet_header_context_fields( | |
2453 | struct bt_ctf_notif_iter *notit, | |
2454 | struct bt_ctf_field **packet_header_field, | |
2455 | struct bt_ctf_field **packet_context_field) | |
2456 | { | |
2457 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
2458 | ||
2459 | assert(notit); | |
2460 | ||
2461 | if (notit->state == STATE_EMIT_NOTIF_NEW_PACKET) { | |
2462 | /* We're already there */ | |
2463 | goto set_fields; | |
2464 | } | |
2465 | ||
2466 | while (true) { | |
2467 | status = handle_state(notit); | |
2468 | if (status == BT_CTF_NOTIF_ITER_STATUS_AGAIN) { | |
2469 | PDBG("Medium operation reported \"try again later\""); | |
2470 | goto end; | |
2471 | } | |
2472 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
2473 | if (status == BT_CTF_NOTIF_ITER_STATUS_EOF) { | |
2474 | PDBG("Medium operation reported end of stream\n"); | |
2475 | } else { | |
2476 | PERR("Failed to handle state:\n"); | |
2477 | PERR("\tState: %d\n", notit->state); | |
2478 | } | |
2479 | goto end; | |
2480 | } | |
2481 | ||
2482 | switch (notit->state) { | |
2483 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
2484 | /* | |
2485 | * Packet header and context fields are | |
2486 | * potentially decoded (or they don't exist). | |
2487 | */ | |
2488 | goto set_fields; | |
2489 | case STATE_INIT: | |
2490 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
2491 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
2492 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
2493 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
2494 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
2495 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
2496 | /* Non-emitting state: continue */ | |
2497 | break; | |
2498 | default: | |
2499 | /* | |
2500 | * We should never get past the | |
2501 | * STATE_EMIT_NOTIF_NEW_PACKET state. | |
2502 | */ | |
2503 | assert(false); | |
2504 | } | |
2505 | } | |
2506 | ||
2507 | set_fields: | |
2508 | if (packet_header_field) { | |
2509 | *packet_header_field = bt_get(notit->dscopes.trace_packet_header); | |
2510 | } | |
2511 | ||
2512 | if (packet_context_field) { | |
2513 | *packet_context_field = bt_get(notit->dscopes.stream_packet_context); | |
2514 | } | |
2515 | ||
2516 | end: | |
2517 | return status; | |
2518 | } |