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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> | |
0fbb9a9f | 47 | #include <stdlib.h> |
e98a2d6e | 48 | |
4929b111 | 49 | #define PRINT_ERR_STREAM (notit ? notit->err_stream : stderr) |
e98a2d6e | 50 | #define PRINT_PREFIX "ctf-notif-iter" |
1e649dff | 51 | #include "../print.h" |
e98a2d6e | 52 | |
06a626b8 JG |
53 | #include "notif-iter.h" |
54 | #include "../btr/btr.h" | |
e98a2d6e PP |
55 | |
56 | #define BYTES_TO_BITS(x) ((x) * 8) | |
57 | ||
58 | struct bt_ctf_notif_iter; | |
59 | ||
60 | /* A visit stack entry */ | |
61 | struct stack_entry { | |
62 | /* | |
63 | * Current base field, one of: | |
64 | * | |
65 | * * string | |
66 | * * structure | |
67 | * * array | |
68 | * * sequence | |
69 | * * variant | |
70 | * | |
71 | * Field is owned by this. | |
72 | */ | |
73 | struct bt_ctf_field *base; | |
74 | ||
75 | /* index of next field to set */ | |
76 | size_t index; | |
77 | }; | |
78 | ||
79 | /* Visit stack */ | |
80 | struct stack { | |
81 | /* Entries (struct stack_entry *) (top is last element) */ | |
82 | GPtrArray *entries; | |
e98a2d6e PP |
83 | }; |
84 | ||
85 | /* State */ | |
86 | enum state { | |
87 | STATE_INIT, | |
88 | STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN, | |
89 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
90 | STATE_AFTER_TRACE_PACKET_HEADER, | |
91 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN, | |
92 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
93 | STATE_AFTER_STREAM_PACKET_CONTEXT, | |
94 | STATE_EMIT_NOTIF_NEW_PACKET, | |
95 | STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN, | |
96 | STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE, | |
97 | STATE_AFTER_STREAM_EVENT_HEADER, | |
98 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN, | |
99 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE, | |
100 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN, | |
101 | STATE_DSCOPE_EVENT_CONTEXT_CONTINUE, | |
102 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, | |
103 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
104 | STATE_EMIT_NOTIF_EVENT, | |
105 | STATE_EMIT_NOTIF_END_OF_PACKET, | |
106 | STATE_SKIP_PACKET_PADDING, | |
107 | }; | |
108 | ||
5f870343 JG |
109 | struct trace_field_path_cache { |
110 | /* | |
111 | * Indexes of the stream_id and stream_instance_id field in the packet | |
112 | * header structure, -1 if unset. | |
113 | */ | |
114 | int stream_id; | |
115 | int stream_instance_id; | |
116 | }; | |
117 | ||
118 | struct stream_class_field_path_cache { | |
119 | /* | |
120 | * Indexes of the v and id fields in the stream event header structure, | |
121 | * -1 if unset. | |
122 | */ | |
123 | int v; | |
124 | int id; | |
125 | ||
126 | /* | |
127 | * index of the timestamp_end, packet_size and content_size fields in | |
128 | * the stream packet context structure. Set to -1 if the fields were | |
129 | * not found. | |
130 | */ | |
131 | int timestamp_end; | |
132 | int packet_size; | |
133 | int content_size; | |
134 | }; | |
135 | ||
136 | struct field_cb_override { | |
137 | enum bt_ctf_btr_status (* func)(void *value, | |
138 | struct bt_ctf_field_type *type, void *data); | |
139 | void *data; | |
140 | }; | |
141 | ||
e98a2d6e PP |
142 | /* CTF notification iterator */ |
143 | struct bt_ctf_notif_iter { | |
144 | /* Visit stack */ | |
145 | struct stack *stack; | |
146 | ||
147 | /* Error stream (may be NULL) */ | |
148 | FILE *err_stream; | |
149 | ||
150 | /* | |
151 | * Current dynamic scope field pointer. | |
152 | * | |
153 | * This is set when a dynamic scope field is first created by | |
154 | * btr_compound_begin_cb(). It points to one of the fields in | |
155 | * dscopes below. | |
156 | */ | |
157 | struct bt_ctf_field **cur_dscope_field; | |
158 | ||
159 | /* Trace and classes (owned by this) */ | |
160 | struct { | |
161 | struct bt_ctf_trace *trace; | |
162 | struct bt_ctf_stream_class *stream_class; | |
163 | struct bt_ctf_event_class *event_class; | |
164 | } meta; | |
165 | ||
166 | /* Current packet (NULL if not created yet) */ | |
167 | struct bt_ctf_packet *packet; | |
168 | ||
5f870343 JG |
169 | /* |
170 | * Current timestamp_end field (to consider before switching packets). | |
171 | */ | |
172 | struct bt_ctf_field *cur_timestamp_end; | |
173 | ||
e98a2d6e PP |
174 | /* Database of current dynamic scopes (owned by this) */ |
175 | struct { | |
176 | struct bt_ctf_field *trace_packet_header; | |
177 | struct bt_ctf_field *stream_packet_context; | |
178 | struct bt_ctf_field *stream_event_header; | |
179 | struct bt_ctf_field *stream_event_context; | |
180 | struct bt_ctf_field *event_context; | |
181 | struct bt_ctf_field *event_payload; | |
182 | } dscopes; | |
183 | ||
5f870343 JG |
184 | /* |
185 | * Special field overrides. | |
186 | * | |
187 | * Overrides are used to implement the behaviours of special fields such | |
188 | * as "timestamp_end" (which must be ignored until the end of the | |
189 | * packet), "id" (event id) which can be present multiple times and must | |
190 | * be updated multiple time. | |
191 | * | |
192 | * This should be used to implement the behaviour of integer fields | |
193 | * mapped to clocks and other "tagged" fields (in CTF 2). | |
194 | * | |
195 | * bt_ctf_field_type to struct field_cb_override | |
196 | */ | |
197 | GHashTable *field_overrides; | |
198 | ||
e98a2d6e PP |
199 | /* Current state */ |
200 | enum state state; | |
201 | ||
2cf1d51e | 202 | /* Current medium buffer data */ |
e98a2d6e PP |
203 | struct { |
204 | /* Last address provided by medium */ | |
205 | const uint8_t *addr; | |
206 | ||
207 | /* Buffer size provided by medium (bytes) */ | |
208 | size_t sz; | |
209 | ||
210 | /* Offset within whole packet of addr (bits) */ | |
211 | size_t packet_offset; | |
212 | ||
213 | /* Current position from addr (bits) */ | |
214 | size_t at; | |
215 | } buf; | |
216 | ||
217 | /* Binary type reader */ | |
218 | struct bt_ctf_btr *btr; | |
219 | ||
2cf1d51e | 220 | /* Current medium data */ |
e98a2d6e PP |
221 | struct { |
222 | struct bt_ctf_notif_iter_medium_ops medops; | |
223 | size_t max_request_sz; | |
224 | void *data; | |
225 | } medium; | |
226 | ||
227 | /* Current packet size (bits) (-1 if unknown) */ | |
e7a4393b | 228 | int64_t cur_packet_size; |
e98a2d6e PP |
229 | |
230 | /* Current content size (bits) (-1 if unknown) */ | |
e7a4393b | 231 | int64_t cur_content_size; |
c44c3e70 | 232 | |
ac0c6bdd | 233 | /* bt_ctf_clock_class to uint64_t. */ |
c44c3e70 | 234 | GHashTable *clock_states; |
5f870343 JG |
235 | |
236 | /* | |
237 | * Cache of the trace-constant field paths (event header type) | |
238 | * associated to the current trace. | |
239 | */ | |
240 | struct trace_field_path_cache trace_field_path_cache; | |
241 | ||
242 | /* | |
243 | * Field path cache associated with the current stream class. | |
244 | * Ownership of this structure belongs to the field_path_caches HT. | |
245 | */ | |
246 | struct stream_class_field_path_cache *cur_sc_field_path_cache; | |
247 | ||
248 | /* bt_ctf_stream_class to struct stream_class_field_path_cache. */ | |
249 | GHashTable *sc_field_path_caches; | |
e98a2d6e PP |
250 | }; |
251 | ||
2cf1d51e JG |
252 | static |
253 | int bt_ctf_notif_iter_switch_packet(struct bt_ctf_notif_iter *notit); | |
254 | ||
5f870343 JG |
255 | static |
256 | enum bt_ctf_btr_status btr_timestamp_end_cb(void *value, | |
257 | struct bt_ctf_field_type *type, void *data); | |
258 | ||
e98a2d6e PP |
259 | static |
260 | void stack_entry_free_func(gpointer data) | |
261 | { | |
262 | struct stack_entry *entry = data; | |
263 | ||
264 | bt_put(entry->base); | |
265 | g_free(entry); | |
266 | } | |
267 | ||
268 | static | |
269 | struct stack *stack_new(struct bt_ctf_notif_iter *notit) | |
270 | { | |
271 | struct stack *stack = NULL; | |
272 | ||
273 | stack = g_new0(struct stack, 1); | |
274 | if (!stack) { | |
275 | goto error; | |
276 | } | |
277 | ||
278 | stack->entries = g_ptr_array_new_with_free_func(stack_entry_free_func); | |
279 | if (!stack->entries) { | |
280 | goto error; | |
281 | } | |
282 | ||
e98a2d6e | 283 | return stack; |
e98a2d6e PP |
284 | error: |
285 | g_free(stack); | |
e98a2d6e PP |
286 | return NULL; |
287 | } | |
288 | ||
289 | static | |
290 | void stack_destroy(struct stack *stack) | |
291 | { | |
292 | assert(stack); | |
293 | g_ptr_array_free(stack->entries, TRUE); | |
294 | g_free(stack); | |
295 | } | |
296 | ||
297 | static | |
298 | int stack_push(struct stack *stack, struct bt_ctf_field *base) | |
299 | { | |
300 | int ret = 0; | |
301 | struct stack_entry *entry; | |
e98a2d6e PP |
302 | |
303 | assert(stack); | |
304 | assert(base); | |
e98a2d6e PP |
305 | entry = g_new0(struct stack_entry, 1); |
306 | if (!entry) { | |
e98a2d6e PP |
307 | ret = -1; |
308 | goto end; | |
309 | } | |
310 | ||
311 | entry->base = bt_get(base); | |
312 | g_ptr_array_add(stack->entries, entry); | |
313 | ||
314 | end: | |
315 | return ret; | |
316 | } | |
317 | ||
318 | static inline | |
319 | unsigned int stack_size(struct stack *stack) | |
320 | { | |
321 | assert(stack); | |
322 | ||
323 | return stack->entries->len; | |
324 | } | |
325 | ||
326 | static | |
327 | void stack_pop(struct stack *stack) | |
328 | { | |
329 | assert(stack); | |
330 | assert(stack_size(stack)); | |
331 | g_ptr_array_remove_index(stack->entries, stack->entries->len - 1); | |
332 | } | |
333 | ||
334 | static inline | |
335 | struct stack_entry *stack_top(struct stack *stack) | |
336 | { | |
337 | assert(stack); | |
338 | assert(stack_size(stack)); | |
339 | ||
340 | return g_ptr_array_index(stack->entries, stack->entries->len - 1); | |
341 | } | |
342 | ||
343 | static inline | |
344 | bool stack_empty(struct stack *stack) | |
345 | { | |
346 | return stack_size(stack) == 0; | |
347 | } | |
348 | ||
349 | static | |
350 | void stack_clear(struct stack *stack) | |
351 | { | |
352 | assert(stack); | |
353 | ||
354 | if (!stack_empty(stack)) { | |
355 | g_ptr_array_remove_range(stack->entries, 0, stack_size(stack)); | |
356 | } | |
357 | ||
358 | assert(stack_empty(stack)); | |
359 | } | |
360 | ||
361 | static inline | |
362 | enum bt_ctf_notif_iter_status notif_iter_status_from_m_status( | |
363 | enum bt_ctf_notif_iter_medium_status m_status) | |
364 | { | |
dc77b521 | 365 | return (int) m_status; |
e98a2d6e PP |
366 | } |
367 | ||
368 | static inline | |
369 | size_t buf_size_bits(struct bt_ctf_notif_iter *notit) | |
370 | { | |
371 | return BYTES_TO_BITS(notit->buf.sz); | |
372 | } | |
373 | ||
374 | static inline | |
375 | size_t buf_available_bits(struct bt_ctf_notif_iter *notit) | |
376 | { | |
377 | return buf_size_bits(notit) - notit->buf.at; | |
378 | } | |
379 | ||
380 | static inline | |
381 | size_t packet_at(struct bt_ctf_notif_iter *notit) | |
382 | { | |
383 | return notit->buf.packet_offset + notit->buf.at; | |
384 | } | |
385 | ||
e98a2d6e PP |
386 | static inline |
387 | void buf_consume_bits(struct bt_ctf_notif_iter *notit, size_t incr) | |
388 | { | |
389 | notit->buf.at += incr; | |
390 | } | |
391 | ||
e98a2d6e | 392 | static |
2cf1d51e JG |
393 | enum bt_ctf_notif_iter_status request_medium_bytes( |
394 | struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
395 | { |
396 | uint8_t *buffer_addr; | |
397 | size_t buffer_sz; | |
398 | enum bt_ctf_notif_iter_medium_status m_status; | |
399 | ||
400 | m_status = notit->medium.medops.request_bytes( | |
401 | notit->medium.max_request_sz, &buffer_addr, | |
402 | &buffer_sz, notit->medium.data); | |
403 | if (m_status == BT_CTF_NOTIF_ITER_MEDIUM_STATUS_OK) { | |
404 | assert(buffer_sz != 0); | |
405 | ||
406 | /* New packet offset is old one + old size (in bits) */ | |
407 | notit->buf.packet_offset += buf_size_bits(notit); | |
408 | ||
409 | /* Restart at the beginning of the new medium buffer */ | |
410 | notit->buf.at = 0; | |
411 | ||
412 | /* New medium buffer size */ | |
413 | notit->buf.sz = buffer_sz; | |
414 | ||
415 | /* New medium buffer address */ | |
416 | notit->buf.addr = buffer_addr; | |
417 | } | |
418 | ||
419 | return notif_iter_status_from_m_status(m_status); | |
420 | } | |
421 | ||
422 | static inline | |
423 | enum bt_ctf_notif_iter_status buf_ensure_available_bits( | |
424 | struct bt_ctf_notif_iter *notit) | |
425 | { | |
426 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
427 | ||
428 | if (buf_available_bits(notit) == 0) { | |
429 | /* | |
430 | * This _cannot_ return BT_CTF_NOTIF_ITER_STATUS_OK | |
431 | * _and_ no bits. | |
432 | */ | |
433 | status = request_medium_bytes(notit); | |
434 | } | |
435 | ||
436 | return status; | |
437 | } | |
438 | ||
439 | static | |
440 | enum bt_ctf_notif_iter_status read_dscope_begin_state( | |
441 | struct bt_ctf_notif_iter *notit, | |
442 | struct bt_ctf_field_type *dscope_field_type, | |
443 | enum state done_state, enum state continue_state, | |
444 | struct bt_ctf_field **dscope_field) | |
445 | { | |
446 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
447 | enum bt_ctf_btr_status btr_status; | |
448 | size_t consumed_bits; | |
449 | ||
450 | status = buf_ensure_available_bits(notit); | |
451 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
452 | goto end; | |
453 | } | |
454 | ||
455 | bt_put(*dscope_field); | |
456 | notit->cur_dscope_field = dscope_field; | |
457 | consumed_bits = bt_ctf_btr_start(notit->btr, dscope_field_type, | |
458 | notit->buf.addr, notit->buf.at, packet_at(notit), | |
459 | notit->buf.sz, &btr_status); | |
460 | ||
461 | switch (btr_status) { | |
462 | case BT_CTF_BTR_STATUS_OK: | |
463 | /* type was read completely */ | |
464 | notit->state = done_state; | |
465 | break; | |
466 | case BT_CTF_BTR_STATUS_EOF: | |
467 | notit->state = continue_state; | |
468 | break; | |
469 | default: | |
470 | PERR("Binary type reader failed to start\n"); | |
471 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
472 | goto end; | |
473 | } | |
474 | ||
475 | /* Consume bits now since we know we're not in an error state */ | |
476 | buf_consume_bits(notit, consumed_bits); | |
477 | ||
478 | end: | |
479 | return status; | |
480 | } | |
481 | ||
482 | static | |
483 | enum bt_ctf_notif_iter_status read_dscope_continue_state( | |
484 | struct bt_ctf_notif_iter *notit, enum state done_state) | |
485 | { | |
486 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
487 | enum bt_ctf_btr_status btr_status; | |
488 | size_t consumed_bits; | |
489 | ||
490 | status = buf_ensure_available_bits(notit); | |
491 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
492 | goto end; | |
493 | } | |
494 | ||
495 | consumed_bits = bt_ctf_btr_continue(notit->btr, notit->buf.addr, | |
78586d8a | 496 | notit->buf.sz, &btr_status); |
e98a2d6e PP |
497 | |
498 | switch (btr_status) { | |
499 | case BT_CTF_BTR_STATUS_OK: | |
78586d8a | 500 | /* Type was read completely. */ |
e98a2d6e PP |
501 | notit->state = done_state; |
502 | break; | |
503 | case BT_CTF_BTR_STATUS_EOF: | |
78586d8a | 504 | /* Stay in this continue state. */ |
e98a2d6e PP |
505 | break; |
506 | default: | |
507 | PERR("Binary type reader failed to continue\n"); | |
508 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
509 | goto end; | |
510 | } | |
511 | ||
78586d8a | 512 | /* Consume bits now since we know we're not in an error state. */ |
e98a2d6e | 513 | buf_consume_bits(notit, consumed_bits); |
e98a2d6e PP |
514 | end: |
515 | return status; | |
516 | } | |
517 | ||
518 | static | |
519 | void put_event_dscopes(struct bt_ctf_notif_iter *notit) | |
520 | { | |
521 | BT_PUT(notit->dscopes.stream_event_header); | |
522 | BT_PUT(notit->dscopes.stream_event_context); | |
523 | BT_PUT(notit->dscopes.event_context); | |
524 | BT_PUT(notit->dscopes.event_payload); | |
525 | } | |
526 | ||
527 | static | |
528 | void put_all_dscopes(struct bt_ctf_notif_iter *notit) | |
529 | { | |
530 | BT_PUT(notit->dscopes.trace_packet_header); | |
531 | BT_PUT(notit->dscopes.stream_packet_context); | |
532 | put_event_dscopes(notit); | |
533 | } | |
534 | ||
535 | static | |
536 | enum bt_ctf_notif_iter_status read_packet_header_begin_state( | |
537 | struct bt_ctf_notif_iter *notit) | |
538 | { | |
2cf1d51e JG |
539 | struct bt_ctf_field_type *packet_header_type = NULL; |
540 | enum bt_ctf_notif_iter_status ret = BT_CTF_NOTIF_ITER_STATUS_OK; | |
e98a2d6e | 541 | |
2cf1d51e JG |
542 | if (bt_ctf_notif_iter_switch_packet(notit)) { |
543 | ret = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
544 | goto end; | |
545 | } | |
e98a2d6e | 546 | |
2cf1d51e | 547 | /* Packet header type is common to the whole trace. */ |
e98a2d6e | 548 | packet_header_type = bt_ctf_trace_get_packet_header_type( |
78586d8a | 549 | notit->meta.trace); |
e98a2d6e | 550 | if (!packet_header_type) { |
835b2d10 | 551 | notit->state = STATE_AFTER_TRACE_PACKET_HEADER; |
e98a2d6e PP |
552 | goto end; |
553 | } | |
554 | ||
2cf1d51e | 555 | ret = read_dscope_begin_state(notit, packet_header_type, |
78586d8a JG |
556 | STATE_AFTER_TRACE_PACKET_HEADER, |
557 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
558 | ¬it->dscopes.trace_packet_header); | |
e98a2d6e PP |
559 | end: |
560 | BT_PUT(packet_header_type); | |
2cf1d51e | 561 | return ret; |
e98a2d6e PP |
562 | } |
563 | ||
564 | static | |
565 | enum bt_ctf_notif_iter_status read_packet_header_continue_state( | |
566 | struct bt_ctf_notif_iter *notit) | |
567 | { | |
568 | return read_dscope_continue_state(notit, | |
78586d8a | 569 | STATE_AFTER_TRACE_PACKET_HEADER); |
e98a2d6e PP |
570 | } |
571 | ||
572 | static inline | |
573 | bool is_struct_type(struct bt_ctf_field_type *field_type) | |
574 | { | |
78586d8a | 575 | return bt_ctf_field_type_get_type_id(field_type) == |
1487a16a | 576 | BT_CTF_FIELD_TYPE_ID_STRUCT; |
e98a2d6e PP |
577 | } |
578 | ||
579 | static inline | |
580 | bool is_variant_type(struct bt_ctf_field_type *field_type) | |
581 | { | |
78586d8a | 582 | return bt_ctf_field_type_get_type_id(field_type) == |
1487a16a | 583 | BT_CTF_FIELD_TYPE_ID_VARIANT; |
e98a2d6e PP |
584 | } |
585 | ||
5f870343 JG |
586 | static |
587 | struct stream_class_field_path_cache * | |
588 | create_stream_class_field_path_cache_entry( | |
589 | struct bt_ctf_notif_iter *notit, | |
590 | struct bt_ctf_stream_class *stream_class) | |
591 | { | |
592 | int v = -1; | |
593 | int id = -1; | |
594 | int timestamp_end = -1; | |
595 | int packet_size = -1; | |
596 | int content_size = -1; | |
597 | struct stream_class_field_path_cache *cache_entry = g_new0( | |
598 | struct stream_class_field_path_cache, 1); | |
599 | struct bt_ctf_field_type *event_header = NULL, *packet_context = NULL; | |
600 | ||
601 | if (!cache_entry) { | |
602 | goto end; | |
603 | } | |
604 | ||
605 | event_header = bt_ctf_stream_class_get_event_header_type(stream_class); | |
606 | if (event_header && bt_ctf_field_type_is_structure(event_header)) { | |
607 | int i, count; | |
608 | ||
609 | count = bt_ctf_field_type_structure_get_field_count( | |
610 | event_header); | |
611 | if (count < 0) { | |
612 | goto error; | |
613 | } | |
614 | for (i = 0; i < count; i++) { | |
615 | int ret; | |
616 | const char *name; | |
617 | ||
618 | ret = bt_ctf_field_type_structure_get_field( | |
619 | event_header, &name, NULL, i); | |
620 | if (ret) { | |
621 | goto error; | |
622 | } | |
623 | ||
624 | if (v != -1 && id != -1) { | |
625 | break; | |
626 | } | |
627 | if (v == -1 && !strcmp(name, "v")) { | |
628 | v = i; | |
629 | } else if (id == -1 && !strcmp(name, "id")) { | |
630 | id = i; | |
631 | } | |
632 | } | |
633 | } | |
634 | ||
635 | packet_context = bt_ctf_stream_class_get_packet_context_type( | |
636 | stream_class); | |
637 | if (packet_context && bt_ctf_field_type_is_structure(packet_context)) { | |
638 | int i, count; | |
639 | ||
640 | count = bt_ctf_field_type_structure_get_field_count( | |
641 | packet_context); | |
642 | if (count < 0) { | |
643 | goto error; | |
644 | } | |
645 | for (i = 0; i < count; i++) { | |
646 | int ret; | |
647 | const char *name; | |
648 | struct bt_ctf_field_type *field_type; | |
649 | ||
650 | if (timestamp_end != -1 && packet_size != -1 && | |
651 | content_size != -1) { | |
652 | break; | |
653 | } | |
654 | ||
655 | ret = bt_ctf_field_type_structure_get_field( | |
656 | packet_context, &name, &field_type, i); | |
657 | if (ret) { | |
658 | goto error; | |
659 | } | |
660 | ||
661 | if (timestamp_end == -1 && | |
662 | !strcmp(name, "timestamp_end")) { | |
663 | struct field_cb_override *override = g_new0( | |
664 | struct field_cb_override, 1); | |
665 | ||
666 | if (!override) { | |
667 | BT_PUT(field_type); | |
668 | goto error; | |
669 | } | |
670 | ||
671 | override->func = btr_timestamp_end_cb; | |
672 | override->data = notit; | |
673 | ||
674 | g_hash_table_insert(notit->field_overrides, | |
675 | bt_get(field_type), override); | |
676 | ||
677 | timestamp_end = i; | |
678 | } else if (packet_size == -1 && | |
679 | !strcmp(name, "packet_size")) { | |
680 | packet_size = i; | |
681 | } else if (content_size == -1 && | |
682 | !strcmp(name, "content_size")) { | |
683 | content_size = i; | |
684 | } | |
685 | BT_PUT(field_type); | |
686 | } | |
687 | } | |
688 | ||
689 | cache_entry->v = v; | |
690 | cache_entry->id = id; | |
691 | cache_entry->timestamp_end = timestamp_end; | |
692 | cache_entry->packet_size = packet_size; | |
693 | cache_entry->content_size = content_size; | |
694 | end: | |
695 | BT_PUT(event_header); | |
696 | BT_PUT(packet_context); | |
697 | return cache_entry; | |
698 | error: | |
699 | g_free(cache_entry); | |
700 | cache_entry = NULL; | |
701 | goto end; | |
702 | } | |
703 | ||
704 | static | |
705 | struct stream_class_field_path_cache *get_stream_class_field_path_cache( | |
706 | struct bt_ctf_notif_iter *notit, | |
707 | struct bt_ctf_stream_class *stream_class) | |
708 | { | |
709 | bool cache_entry_found; | |
710 | struct stream_class_field_path_cache *cache_entry; | |
711 | ||
712 | cache_entry_found = g_hash_table_lookup_extended( | |
713 | notit->sc_field_path_caches, | |
714 | stream_class, NULL, (gpointer) &cache_entry); | |
715 | if (unlikely(!cache_entry_found)) { | |
716 | cache_entry = create_stream_class_field_path_cache_entry(notit, | |
717 | stream_class); | |
718 | g_hash_table_insert(notit->sc_field_path_caches, | |
719 | bt_get(stream_class), (gpointer) cache_entry); | |
720 | } | |
721 | ||
722 | return cache_entry; | |
723 | } | |
724 | ||
e98a2d6e | 725 | static inline |
835b2d10 JG |
726 | enum bt_ctf_notif_iter_status set_current_stream_class( |
727 | struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
728 | { |
729 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
5f870343 | 730 | struct bt_ctf_field_type *packet_header_type = NULL; |
e98a2d6e PP |
731 | struct bt_ctf_field_type *stream_id_field_type = NULL; |
732 | uint64_t stream_id; | |
733 | ||
5f870343 JG |
734 | /* Clear the current stream class field path cache. */ |
735 | notit->cur_sc_field_path_cache = NULL; | |
736 | ||
e98a2d6e PP |
737 | /* Is there any "stream_id" field in the packet header? */ |
738 | packet_header_type = bt_ctf_trace_get_packet_header_type( | |
78586d8a | 739 | notit->meta.trace); |
e98a2d6e PP |
740 | if (!packet_header_type) { |
741 | PERR("Failed to retrieve trace's packet header type\n"); | |
742 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
743 | goto end; | |
744 | } | |
745 | ||
746 | assert(is_struct_type(packet_header_type)); | |
747 | ||
748 | // TODO: optimalize! | |
749 | stream_id_field_type = | |
78586d8a JG |
750 | bt_ctf_field_type_structure_get_field_type_by_name( |
751 | packet_header_type, "stream_id"); | |
e98a2d6e PP |
752 | if (stream_id_field_type) { |
753 | /* Find appropriate stream class using current stream ID */ | |
e98a2d6e | 754 | int ret; |
5f870343 | 755 | struct bt_ctf_field *stream_id_field = NULL; |
e98a2d6e PP |
756 | |
757 | assert(notit->dscopes.trace_packet_header); | |
758 | ||
759 | // TODO: optimalize! | |
760 | stream_id_field = bt_ctf_field_structure_get_field( | |
78586d8a | 761 | notit->dscopes.trace_packet_header, "stream_id"); |
e98a2d6e PP |
762 | assert(stream_id_field); |
763 | ret = bt_ctf_field_unsigned_integer_get_value( | |
78586d8a | 764 | stream_id_field, &stream_id); |
e98a2d6e PP |
765 | assert(!ret); |
766 | BT_PUT(stream_id_field); | |
767 | } else { | |
768 | /* Only one stream: pick the first stream class */ | |
769 | assert(bt_ctf_trace_get_stream_class_count( | |
78586d8a | 770 | notit->meta.trace) == 1); |
e98a2d6e PP |
771 | stream_id = 0; |
772 | } | |
773 | ||
774 | BT_PUT(notit->meta.stream_class); | |
5b29e799 | 775 | notit->meta.stream_class = bt_ctf_trace_get_stream_class_by_id( |
78586d8a | 776 | notit->meta.trace, stream_id); |
e98a2d6e PP |
777 | if (!notit->meta.stream_class) { |
778 | PERR("Cannot find stream class with ID %" PRIu64 "\n", | |
779 | stream_id); | |
780 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
781 | goto end; | |
782 | } | |
783 | ||
5f870343 JG |
784 | /* |
785 | * Retrieve (or lazily create) the current stream class field path | |
786 | * cache. | |
787 | */ | |
788 | notit->cur_sc_field_path_cache = get_stream_class_field_path_cache( | |
789 | notit, notit->meta.stream_class); | |
790 | if (!notit->cur_sc_field_path_cache) { | |
791 | PERR("Failed to retrieve stream class field path cache\n"); | |
792 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
793 | goto end; | |
794 | } | |
e98a2d6e PP |
795 | end: |
796 | BT_PUT(packet_header_type); | |
797 | BT_PUT(stream_id_field_type); | |
798 | ||
799 | return status; | |
800 | } | |
801 | ||
802 | static | |
803 | enum bt_ctf_notif_iter_status after_packet_header_state( | |
804 | struct bt_ctf_notif_iter *notit) | |
805 | { | |
806 | enum bt_ctf_notif_iter_status status; | |
807 | ||
808 | status = set_current_stream_class(notit); | |
809 | if (status == BT_CTF_NOTIF_ITER_STATUS_OK) { | |
810 | notit->state = STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN; | |
811 | } | |
812 | ||
813 | return status; | |
814 | } | |
815 | ||
816 | static | |
817 | enum bt_ctf_notif_iter_status read_packet_context_begin_state( | |
818 | struct bt_ctf_notif_iter *notit) | |
819 | { | |
820 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
821 | struct bt_ctf_field_type *packet_context_type; | |
822 | ||
823 | assert(notit->meta.stream_class); | |
824 | packet_context_type = bt_ctf_stream_class_get_packet_context_type( | |
78586d8a | 825 | notit->meta.stream_class); |
e98a2d6e | 826 | if (!packet_context_type) { |
835b2d10 | 827 | notit->state = STATE_AFTER_STREAM_PACKET_CONTEXT; |
e98a2d6e PP |
828 | goto end; |
829 | } | |
830 | ||
831 | status = read_dscope_begin_state(notit, packet_context_type, | |
78586d8a JG |
832 | STATE_AFTER_STREAM_PACKET_CONTEXT, |
833 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
834 | ¬it->dscopes.stream_packet_context); | |
e98a2d6e PP |
835 | |
836 | end: | |
837 | BT_PUT(packet_context_type); | |
e98a2d6e PP |
838 | return status; |
839 | } | |
840 | ||
841 | static | |
842 | enum bt_ctf_notif_iter_status read_packet_context_continue_state( | |
843 | struct bt_ctf_notif_iter *notit) | |
844 | { | |
845 | return read_dscope_continue_state(notit, | |
78586d8a | 846 | STATE_AFTER_STREAM_PACKET_CONTEXT); |
e98a2d6e PP |
847 | } |
848 | ||
78586d8a | 849 | static |
e98a2d6e PP |
850 | enum bt_ctf_notif_iter_status set_current_packet_content_sizes( |
851 | struct bt_ctf_notif_iter *notit) | |
852 | { | |
853 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
854 | struct bt_ctf_field *packet_size_field = NULL; | |
855 | struct bt_ctf_field *content_size_field = NULL; | |
856 | uint64_t content_size = -1, packet_size = -1; | |
857 | ||
858 | assert(notit->dscopes.stream_packet_context); | |
859 | ||
e98a2d6e | 860 | packet_size_field = bt_ctf_field_structure_get_field( |
78586d8a | 861 | notit->dscopes.stream_packet_context, "packet_size"); |
e98a2d6e | 862 | content_size_field = bt_ctf_field_structure_get_field( |
78586d8a | 863 | notit->dscopes.stream_packet_context, "content_size"); |
e98a2d6e PP |
864 | if (packet_size_field) { |
865 | int ret = bt_ctf_field_unsigned_integer_get_value( | |
78586d8a | 866 | packet_size_field, &packet_size); |
e98a2d6e | 867 | |
78586d8a | 868 | assert(!ret); |
e98a2d6e PP |
869 | if (packet_size == 0) { |
870 | PERR("Decoded packet size is 0\n"); | |
871 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
872 | goto end; | |
873 | } else if ((packet_size % 8) != 0) { | |
874 | PERR("Decoded packet size is not a multiple of 8\n"); | |
875 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
876 | goto end; | |
877 | } | |
878 | } | |
78586d8a | 879 | |
e98a2d6e PP |
880 | if (content_size_field) { |
881 | int ret = bt_ctf_field_unsigned_integer_get_value( | |
882 | content_size_field, &content_size); | |
78586d8a | 883 | |
e98a2d6e PP |
884 | assert(!ret); |
885 | } else { | |
886 | content_size = packet_size; | |
887 | } | |
888 | ||
889 | notit->cur_packet_size = packet_size; | |
890 | notit->cur_content_size = content_size; | |
e98a2d6e PP |
891 | end: |
892 | BT_PUT(packet_size_field); | |
893 | BT_PUT(content_size_field); | |
e98a2d6e PP |
894 | return status; |
895 | } | |
896 | ||
897 | static | |
898 | enum bt_ctf_notif_iter_status after_packet_context_state( | |
899 | struct bt_ctf_notif_iter *notit) | |
900 | { | |
901 | enum bt_ctf_notif_iter_status status; | |
902 | ||
903 | status = set_current_packet_content_sizes(notit); | |
904 | if (status == BT_CTF_NOTIF_ITER_STATUS_OK) { | |
905 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
906 | } | |
907 | ||
908 | return status; | |
909 | } | |
910 | ||
911 | static | |
912 | enum bt_ctf_notif_iter_status read_event_header_begin_state( | |
913 | struct bt_ctf_notif_iter *notit) | |
914 | { | |
915 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
916 | struct bt_ctf_field_type *event_header_type = NULL; | |
917 | ||
918 | /* Check if we have some content left */ | |
919 | if (notit->cur_content_size >= 0) { | |
920 | if (packet_at(notit) == notit->cur_content_size) { | |
921 | /* No more events! */ | |
922 | notit->state = STATE_EMIT_NOTIF_END_OF_PACKET; | |
923 | goto end; | |
924 | } else if (packet_at(notit) > notit->cur_content_size) { | |
925 | /* That's not supposed to happen */ | |
926 | PERR("Cursor passed packet's content size:\n"); | |
78586d8a | 927 | PERR("\tDecoded content size: %zu\n", |
e98a2d6e | 928 | notit->cur_content_size); |
78586d8a | 929 | PERR("\tCursor position: %zu\n", packet_at(notit)); |
e98a2d6e PP |
930 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; |
931 | goto end; | |
932 | } | |
933 | } | |
934 | ||
935 | event_header_type = bt_ctf_stream_class_get_event_header_type( | |
936 | notit->meta.stream_class); | |
937 | if (!event_header_type) { | |
835b2d10 | 938 | notit->state = STATE_AFTER_STREAM_EVENT_HEADER; |
e98a2d6e PP |
939 | goto end; |
940 | } | |
941 | ||
942 | put_event_dscopes(notit); | |
943 | status = read_dscope_begin_state(notit, event_header_type, | |
944 | STATE_AFTER_STREAM_EVENT_HEADER, | |
945 | STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE, | |
946 | ¬it->dscopes.stream_event_header); | |
e98a2d6e PP |
947 | end: |
948 | BT_PUT(event_header_type); | |
949 | ||
950 | return status; | |
951 | } | |
952 | ||
953 | static | |
954 | enum bt_ctf_notif_iter_status read_event_header_continue_state( | |
955 | struct bt_ctf_notif_iter *notit) | |
956 | { | |
957 | return read_dscope_continue_state(notit, | |
958 | STATE_AFTER_STREAM_EVENT_HEADER); | |
959 | } | |
960 | ||
961 | static inline | |
962 | enum bt_ctf_notif_iter_status set_current_event_class(struct bt_ctf_notif_iter *notit) | |
963 | { | |
964 | /* | |
965 | * The assert() calls in this function are okay because it is | |
966 | * assumed here that all the metadata objects have been | |
967 | * validated for CTF correctness before decoding actual streams. | |
968 | */ | |
969 | ||
970 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
971 | struct bt_ctf_field_type *event_header_type; | |
972 | struct bt_ctf_field_type *id_field_type = NULL; | |
973 | struct bt_ctf_field_type *v_field_type = NULL; | |
974 | uint64_t event_id = -1ULL; | |
975 | int ret; | |
976 | ||
977 | event_header_type = bt_ctf_stream_class_get_event_header_type( | |
978 | notit->meta.stream_class); | |
979 | if (!event_header_type) { | |
980 | PERR("Failed to retrieve stream class's event header type\n"); | |
981 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
982 | goto end; | |
983 | } | |
984 | ||
985 | /* Is there any "id"/"v" field in the event header? */ | |
986 | assert(is_struct_type(event_header_type)); | |
987 | id_field_type = bt_ctf_field_type_structure_get_field_type_by_name( | |
988 | event_header_type, "id"); | |
989 | v_field_type = bt_ctf_field_type_structure_get_field_type_by_name( | |
990 | event_header_type, "v"); | |
991 | assert(notit->dscopes.stream_event_header); | |
992 | if (v_field_type) { | |
993 | /* | |
994 | * _ _____ _____ | |
995 | * | | |_ _|_ _| __ __ _ | |
996 | * | | | | | || '_ \ / _` | | |
997 | * | |___| | | || | | | (_| | S P E C I A L | |
998 | * |_____|_| |_||_| |_|\__, | C A S E ™ | |
999 | * |___/ | |
1000 | */ | |
1001 | struct bt_ctf_field *v_field = NULL; | |
1002 | struct bt_ctf_field *v_struct_field = NULL; | |
1003 | struct bt_ctf_field *v_struct_id_field = NULL; | |
1004 | ||
1005 | // TODO: optimalize! | |
1006 | v_field = bt_ctf_field_structure_get_field( | |
1007 | notit->dscopes.stream_event_header, "v"); | |
1008 | assert(v_field); | |
1009 | ||
1010 | v_struct_field = | |
1011 | bt_ctf_field_variant_get_current_field(v_field); | |
1012 | if (!v_struct_field) { | |
1013 | goto end_v_field_type; | |
1014 | } | |
1015 | ||
1016 | // TODO: optimalize! | |
1017 | v_struct_id_field = | |
1018 | bt_ctf_field_structure_get_field(v_struct_field, "id"); | |
1019 | if (!v_struct_id_field) { | |
1020 | goto end_v_field_type; | |
1021 | } | |
1022 | ||
1023 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1024 | v_struct_id_field, &event_id); | |
1025 | if (ret) { | |
1026 | event_id = -1ULL; | |
1027 | } | |
1028 | ||
1029 | end_v_field_type: | |
1030 | BT_PUT(v_field); | |
1031 | BT_PUT(v_struct_field); | |
1032 | BT_PUT(v_struct_id_field); | |
1033 | } | |
1034 | ||
1035 | if (id_field_type && event_id == -1ULL) { | |
1036 | /* Check "id" field */ | |
1037 | struct bt_ctf_field *id_field = NULL; | |
1038 | int ret; | |
1039 | ||
1040 | // TODO: optimalize! | |
1041 | id_field = bt_ctf_field_structure_get_field( | |
1042 | notit->dscopes.stream_event_header, "id"); | |
1043 | assert(id_field); | |
1044 | assert(bt_ctf_field_is_integer(id_field) || | |
1045 | bt_ctf_field_is_enumeration(id_field)); | |
1046 | ||
1047 | if (bt_ctf_field_is_integer(id_field)) { | |
1048 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1049 | id_field, &event_id); | |
1050 | } else { | |
1051 | struct bt_ctf_field *container; | |
1052 | ||
1053 | container = bt_ctf_field_enumeration_get_container( | |
1054 | id_field); | |
1055 | assert(container); | |
1056 | ret = bt_ctf_field_unsigned_integer_get_value( | |
1057 | container, &event_id); | |
1058 | BT_PUT(container); | |
1059 | } | |
1060 | assert(!ret); | |
1061 | BT_PUT(id_field); | |
1062 | } | |
1063 | ||
1064 | if (event_id == -1ULL) { | |
1065 | /* Event ID not found: single event? */ | |
1066 | assert(bt_ctf_stream_class_get_event_class_count( | |
1067 | notit->meta.stream_class) == 1); | |
1068 | event_id = 0; | |
1069 | } | |
1070 | ||
1071 | BT_PUT(notit->meta.event_class); | |
1072 | notit->meta.event_class = bt_ctf_stream_class_get_event_class_by_id( | |
1073 | notit->meta.stream_class, event_id); | |
1074 | if (!notit->meta.event_class) { | |
1075 | PERR("Cannot find event class with ID %" PRIu64 "\n", event_id); | |
1076 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
1077 | goto end; | |
1078 | } | |
1079 | ||
1080 | end: | |
1081 | BT_PUT(event_header_type); | |
1082 | BT_PUT(id_field_type); | |
1083 | BT_PUT(v_field_type); | |
1084 | ||
1085 | return status; | |
1086 | } | |
1087 | ||
1088 | static | |
1089 | enum bt_ctf_notif_iter_status after_event_header_state( | |
1090 | struct bt_ctf_notif_iter *notit) | |
1091 | { | |
1092 | enum bt_ctf_notif_iter_status status; | |
1093 | ||
e98a2d6e PP |
1094 | status = set_current_event_class(notit); |
1095 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
1096 | PERR("Failed to set current event class\n"); | |
1097 | goto end; | |
1098 | } | |
1099 | ||
1100 | notit->state = STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN; | |
1101 | ||
1102 | end: | |
1103 | return status; | |
1104 | } | |
1105 | ||
1106 | static | |
1107 | enum bt_ctf_notif_iter_status read_stream_event_context_begin_state( | |
1108 | struct bt_ctf_notif_iter *notit) | |
1109 | { | |
1110 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1111 | struct bt_ctf_field_type *stream_event_context_type; | |
1112 | ||
1113 | stream_event_context_type = bt_ctf_stream_class_get_event_context_type( | |
1114 | notit->meta.stream_class); | |
1115 | if (!stream_event_context_type) { | |
835b2d10 | 1116 | notit->state = STATE_DSCOPE_EVENT_CONTEXT_BEGIN; |
e98a2d6e PP |
1117 | goto end; |
1118 | } | |
1119 | ||
1120 | status = read_dscope_begin_state(notit, stream_event_context_type, | |
1121 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN, | |
1122 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE, | |
1123 | ¬it->dscopes.stream_event_context); | |
1124 | ||
1125 | end: | |
1126 | BT_PUT(stream_event_context_type); | |
1127 | ||
1128 | return status; | |
1129 | } | |
1130 | ||
1131 | static | |
1132 | enum bt_ctf_notif_iter_status read_stream_event_context_continue_state( | |
1133 | struct bt_ctf_notif_iter *notit) | |
1134 | { | |
1135 | return read_dscope_continue_state(notit, | |
1136 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN); | |
1137 | } | |
1138 | ||
1139 | static | |
1140 | enum bt_ctf_notif_iter_status read_event_context_begin_state( | |
1141 | struct bt_ctf_notif_iter *notit) | |
1142 | { | |
1143 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1144 | struct bt_ctf_field_type *event_context_type; | |
1145 | ||
1146 | event_context_type = bt_ctf_event_class_get_context_type( | |
1147 | notit->meta.event_class); | |
1148 | if (!event_context_type) { | |
835b2d10 | 1149 | notit->state = STATE_DSCOPE_EVENT_PAYLOAD_BEGIN; |
e98a2d6e PP |
1150 | goto end; |
1151 | } | |
e98a2d6e PP |
1152 | status = read_dscope_begin_state(notit, event_context_type, |
1153 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, | |
1154 | STATE_DSCOPE_EVENT_CONTEXT_CONTINUE, | |
1155 | ¬it->dscopes.event_context); | |
1156 | ||
1157 | end: | |
1158 | BT_PUT(event_context_type); | |
1159 | ||
1160 | return status; | |
1161 | } | |
1162 | ||
1163 | static | |
1164 | enum bt_ctf_notif_iter_status read_event_context_continue_state( | |
1165 | struct bt_ctf_notif_iter *notit) | |
1166 | { | |
1167 | return read_dscope_continue_state(notit, | |
1168 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN); | |
1169 | } | |
1170 | ||
1171 | static | |
1172 | enum bt_ctf_notif_iter_status read_event_payload_begin_state( | |
1173 | struct bt_ctf_notif_iter *notit) | |
1174 | { | |
1175 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1176 | struct bt_ctf_field_type *event_payload_type; | |
1177 | ||
1178 | event_payload_type = bt_ctf_event_class_get_payload_type( | |
1179 | notit->meta.event_class); | |
1180 | if (!event_payload_type) { | |
835b2d10 | 1181 | notit->state = STATE_EMIT_NOTIF_EVENT; |
e98a2d6e PP |
1182 | goto end; |
1183 | } | |
1184 | ||
1185 | status = read_dscope_begin_state(notit, event_payload_type, | |
1186 | STATE_EMIT_NOTIF_EVENT, | |
1187 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
1188 | ¬it->dscopes.event_payload); | |
1189 | ||
1190 | end: | |
1191 | BT_PUT(event_payload_type); | |
1192 | ||
1193 | return status; | |
1194 | } | |
1195 | ||
1196 | static | |
1197 | enum bt_ctf_notif_iter_status read_event_payload_continue_state( | |
1198 | struct bt_ctf_notif_iter *notit) | |
1199 | { | |
1200 | return read_dscope_continue_state(notit, STATE_EMIT_NOTIF_EVENT); | |
1201 | } | |
1202 | ||
1203 | static | |
1204 | enum bt_ctf_notif_iter_status skip_packet_padding_state( | |
1205 | struct bt_ctf_notif_iter *notit) | |
1206 | { | |
1207 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1208 | size_t bits_to_skip; | |
1209 | ||
1210 | assert(notit->cur_packet_size > 0); | |
1211 | bits_to_skip = notit->cur_packet_size - packet_at(notit); | |
1212 | if (bits_to_skip == 0) { | |
1213 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1214 | goto end; | |
1215 | } else { | |
1216 | size_t bits_to_consume; | |
1217 | status = buf_ensure_available_bits(notit); | |
1218 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
1219 | goto end; | |
1220 | } | |
1221 | ||
1222 | bits_to_consume = MIN(buf_available_bits(notit), bits_to_skip); | |
1223 | buf_consume_bits(notit, bits_to_consume); | |
1224 | bits_to_skip = notit->cur_packet_size - packet_at(notit); | |
1225 | if (bits_to_skip == 0) { | |
1226 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1227 | goto end; | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | end: | |
1232 | return status; | |
1233 | } | |
1234 | ||
1235 | static inline | |
1236 | enum bt_ctf_notif_iter_status handle_state(struct bt_ctf_notif_iter *notit) | |
1237 | { | |
1238 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
1239 | ||
1240 | PDBG("Handling state %d\n", notit->state); | |
1241 | ||
1242 | // TODO: optimalize! | |
1243 | switch (notit->state) { | |
1244 | case STATE_INIT: | |
1245 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1246 | break; | |
1247 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
1248 | status = read_packet_header_begin_state(notit); | |
1249 | break; | |
1250 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
1251 | status = read_packet_header_continue_state(notit); | |
1252 | break; | |
1253 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
1254 | status = after_packet_header_state(notit); | |
1255 | break; | |
1256 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
1257 | status = read_packet_context_begin_state(notit); | |
1258 | break; | |
1259 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
1260 | status = read_packet_context_continue_state(notit); | |
1261 | break; | |
1262 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
1263 | status = after_packet_context_state(notit); | |
1264 | break; | |
1265 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
1266 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1267 | break; | |
1268 | case STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN: | |
1269 | status = read_event_header_begin_state(notit); | |
1270 | break; | |
1271 | case STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE: | |
1272 | status = read_event_header_continue_state(notit); | |
1273 | break; | |
1274 | case STATE_AFTER_STREAM_EVENT_HEADER: | |
1275 | status = after_event_header_state(notit); | |
1276 | break; | |
1277 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN: | |
1278 | status = read_stream_event_context_begin_state(notit); | |
1279 | break; | |
1280 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE: | |
1281 | status = read_stream_event_context_continue_state(notit); | |
1282 | break; | |
1283 | case STATE_DSCOPE_EVENT_CONTEXT_BEGIN: | |
1284 | status = read_event_context_begin_state(notit); | |
1285 | break; | |
1286 | case STATE_DSCOPE_EVENT_CONTEXT_CONTINUE: | |
1287 | status = read_event_context_continue_state(notit); | |
1288 | break; | |
1289 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: | |
1290 | status = read_event_payload_begin_state(notit); | |
1291 | break; | |
1292 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
1293 | status = read_event_payload_continue_state(notit); | |
1294 | break; | |
1295 | case STATE_EMIT_NOTIF_EVENT: | |
1296 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1297 | break; | |
1298 | case STATE_SKIP_PACKET_PADDING: | |
1299 | status = skip_packet_padding_state(notit); | |
1300 | break; | |
1301 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
1302 | notit->state = STATE_SKIP_PACKET_PADDING; | |
1303 | break; | |
1304 | } | |
1305 | ||
1306 | return status; | |
1307 | } | |
1308 | ||
2cf1d51e JG |
1309 | /** |
1310 | * Resets the internal state of a CTF notification iterator. | |
2cf1d51e JG |
1311 | */ |
1312 | static | |
e98a2d6e PP |
1313 | void bt_ctf_notif_iter_reset(struct bt_ctf_notif_iter *notit) |
1314 | { | |
1315 | assert(notit); | |
1316 | stack_clear(notit->stack); | |
1317 | BT_PUT(notit->meta.stream_class); | |
1318 | BT_PUT(notit->meta.event_class); | |
1319 | BT_PUT(notit->packet); | |
1320 | put_all_dscopes(notit); | |
1321 | notit->buf.addr = NULL; | |
1322 | notit->buf.sz = 0; | |
1323 | notit->buf.at = 0; | |
1324 | notit->buf.packet_offset = 0; | |
1325 | notit->state = STATE_INIT; | |
1326 | notit->cur_content_size = -1; | |
1327 | notit->cur_packet_size = -1; | |
1328 | } | |
1329 | ||
2cf1d51e JG |
1330 | static |
1331 | int bt_ctf_notif_iter_switch_packet(struct bt_ctf_notif_iter *notit) | |
1332 | { | |
1333 | int ret = 0; | |
1334 | ||
1335 | assert(notit); | |
1336 | stack_clear(notit->stack); | |
1337 | BT_PUT(notit->meta.stream_class); | |
1338 | BT_PUT(notit->meta.event_class); | |
1339 | BT_PUT(notit->packet); | |
5f870343 | 1340 | BT_PUT(notit->cur_timestamp_end); |
2cf1d51e JG |
1341 | put_all_dscopes(notit); |
1342 | ||
1343 | /* | |
1344 | * Adjust current buffer so that addr points to the beginning of the new | |
1345 | * packet. | |
1346 | */ | |
1347 | if (notit->buf.addr) { | |
1348 | size_t consumed_bytes = (size_t) (notit->buf.at / CHAR_BIT); | |
1349 | ||
1350 | /* Packets are assumed to start on a byte frontier. */ | |
1351 | if (notit->buf.at % CHAR_BIT) { | |
1352 | ret = -1; | |
1353 | goto end; | |
1354 | } | |
1355 | ||
1356 | notit->buf.addr += consumed_bytes; | |
1357 | notit->buf.sz -= consumed_bytes; | |
1358 | notit->buf.at = 0; | |
1359 | notit->buf.packet_offset = 0; | |
1360 | } | |
1361 | ||
1362 | notit->cur_content_size = -1; | |
1363 | notit->cur_packet_size = -1; | |
5f870343 | 1364 | notit->cur_sc_field_path_cache = NULL; |
2cf1d51e JG |
1365 | end: |
1366 | return ret; | |
1367 | } | |
1368 | ||
e98a2d6e PP |
1369 | static |
1370 | struct bt_ctf_field *get_next_field(struct bt_ctf_notif_iter *notit) | |
1371 | { | |
1372 | struct bt_ctf_field *next_field = NULL; | |
1373 | struct bt_ctf_field *base_field; | |
1374 | struct bt_ctf_field_type *base_type; | |
1375 | size_t index; | |
1376 | ||
1377 | assert(!stack_empty(notit->stack)); | |
1378 | index = stack_top(notit->stack)->index; | |
1379 | base_field = stack_top(notit->stack)->base; | |
1380 | base_type = bt_ctf_field_get_type(base_field); | |
1381 | if (!base_type) { | |
1382 | PERR("Failed to get base field's type\n"); | |
1383 | goto end; | |
1384 | } | |
1385 | ||
1386 | switch (bt_ctf_field_type_get_type_id(base_type)) { | |
1487a16a | 1387 | case BT_CTF_FIELD_TYPE_ID_STRUCT: |
e98a2d6e PP |
1388 | next_field = bt_ctf_field_structure_get_field_by_index( |
1389 | base_field, index); | |
1390 | break; | |
1487a16a | 1391 | case BT_CTF_FIELD_TYPE_ID_ARRAY: |
e98a2d6e PP |
1392 | next_field = bt_ctf_field_array_get_field(base_field, index); |
1393 | break; | |
1487a16a | 1394 | case BT_CTF_FIELD_TYPE_ID_SEQUENCE: |
e98a2d6e PP |
1395 | next_field = bt_ctf_field_sequence_get_field(base_field, index); |
1396 | break; | |
1487a16a | 1397 | case BT_CTF_FIELD_TYPE_ID_VARIANT: |
e98a2d6e PP |
1398 | next_field = bt_ctf_field_variant_get_current_field(base_field); |
1399 | break; | |
1400 | default: | |
0fbb9a9f | 1401 | abort(); |
e98a2d6e PP |
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: | |
0fbb9a9f | 1544 | abort(); |
e98a2d6e PP |
1545 | } |
1546 | ||
1547 | if (!int_field) { | |
1548 | PERR("Failed to get integer field\n"); | |
1549 | status = BT_CTF_BTR_STATUS_ERROR; | |
1550 | goto end; | |
1551 | } | |
1552 | ||
5f870343 | 1553 | ret = bt_ctf_field_unsigned_integer_set_value(int_field, value); |
e98a2d6e PP |
1554 | assert(!ret); |
1555 | stack_top(notit->stack)->index++; | |
f45bfe88 | 1556 | *out_int_field = int_field; |
5f870343 | 1557 | |
e98a2d6e PP |
1558 | end: |
1559 | BT_PUT(field); | |
c44c3e70 JG |
1560 | BT_PUT(type); |
1561 | end_no_put: | |
e98a2d6e PP |
1562 | return status; |
1563 | } | |
1564 | ||
5f870343 JG |
1565 | static |
1566 | enum bt_ctf_btr_status btr_timestamp_end_cb(void *value, | |
1567 | struct bt_ctf_field_type *type, void *data) | |
1568 | { | |
1569 | enum bt_ctf_btr_status status; | |
1570 | struct bt_ctf_field *field = NULL; | |
1571 | struct bt_ctf_notif_iter *notit = data; | |
1572 | ||
1573 | status = btr_unsigned_int_common(*((uint64_t *) value), type, data, | |
1574 | &field); | |
1575 | ||
1576 | /* Set as the current packet's timestamp_end field. */ | |
1577 | BT_MOVE(notit->cur_timestamp_end, field); | |
1578 | return status; | |
1579 | } | |
1580 | ||
e98a2d6e PP |
1581 | static |
1582 | enum bt_ctf_btr_status btr_unsigned_int_cb(uint64_t value, | |
1583 | struct bt_ctf_field_type *type, void *data) | |
5f870343 JG |
1584 | { |
1585 | struct bt_ctf_notif_iter *notit = data; | |
1586 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1587 | struct bt_ctf_field *field = NULL; | |
1588 | struct field_cb_override *override; | |
1589 | ||
1590 | override = g_hash_table_lookup(notit->field_overrides, | |
1591 | type); | |
1592 | if (unlikely(override)) { | |
1593 | status = override->func(&value, type, override->data); | |
1594 | goto end; | |
1595 | } | |
1596 | ||
1597 | status = btr_unsigned_int_common(value, type, data, &field); | |
1598 | if (status != BT_CTF_BTR_STATUS_OK) { | |
1599 | goto end; | |
1600 | } | |
1601 | ||
f45bfe88 | 1602 | status = update_clock(notit, field); |
5f870343 JG |
1603 | BT_PUT(field); |
1604 | end: | |
1605 | return status; | |
1606 | } | |
1607 | ||
1608 | static | |
1609 | enum bt_ctf_btr_status btr_signed_int_cb(int64_t value, | |
1610 | struct bt_ctf_field_type *type, void *data) | |
e98a2d6e PP |
1611 | { |
1612 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1613 | struct bt_ctf_field *field = NULL; | |
1614 | struct bt_ctf_field *int_field = NULL; | |
1615 | struct bt_ctf_notif_iter *notit = data; | |
1616 | int ret; | |
1617 | ||
5f870343 | 1618 | /* create next field */ |
e98a2d6e PP |
1619 | field = get_next_field(notit); |
1620 | if (!field) { | |
5f870343 | 1621 | PERR("Failed to get next field (signed int)\n"); |
e98a2d6e | 1622 | status = BT_CTF_BTR_STATUS_ERROR; |
c44c3e70 | 1623 | goto end_no_put; |
e98a2d6e PP |
1624 | } |
1625 | ||
1626 | switch(bt_ctf_field_type_get_type_id(type)) { | |
1487a16a | 1627 | case BT_CTF_FIELD_TYPE_ID_INTEGER: |
e98a2d6e PP |
1628 | /* Integer field is created field */ |
1629 | BT_MOVE(int_field, field); | |
c44c3e70 | 1630 | bt_get(type); |
e98a2d6e | 1631 | break; |
1487a16a | 1632 | case BT_CTF_FIELD_TYPE_ID_ENUM: |
e98a2d6e | 1633 | int_field = bt_ctf_field_enumeration_get_container(field); |
c44c3e70 | 1634 | type = bt_ctf_field_get_type(int_field); |
e98a2d6e PP |
1635 | break; |
1636 | default: | |
0fbb9a9f | 1637 | abort(); |
e98a2d6e PP |
1638 | } |
1639 | ||
1640 | if (!int_field) { | |
1641 | PERR("Failed to get integer field\n"); | |
1642 | status = BT_CTF_BTR_STATUS_ERROR; | |
1643 | goto end; | |
1644 | } | |
1645 | ||
5f870343 | 1646 | ret = bt_ctf_field_signed_integer_set_value(int_field, value); |
e98a2d6e PP |
1647 | assert(!ret); |
1648 | stack_top(notit->stack)->index++; | |
f45bfe88 | 1649 | status = update_clock(notit, int_field); |
e98a2d6e PP |
1650 | end: |
1651 | BT_PUT(field); | |
1652 | BT_PUT(int_field); | |
c44c3e70 JG |
1653 | BT_PUT(type); |
1654 | end_no_put: | |
e98a2d6e PP |
1655 | return status; |
1656 | } | |
1657 | ||
1658 | static | |
1659 | enum bt_ctf_btr_status btr_floating_point_cb(double value, | |
1660 | struct bt_ctf_field_type *type, void *data) | |
1661 | { | |
1662 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1663 | struct bt_ctf_field *field = NULL; | |
1664 | struct bt_ctf_notif_iter *notit = data; | |
1665 | int ret; | |
1666 | ||
1667 | /* Create next field */ | |
1668 | field = get_next_field(notit); | |
1669 | if (!field) { | |
1670 | PERR("Failed to get next field (floating point number)\n"); | |
1671 | status = BT_CTF_BTR_STATUS_ERROR; | |
1672 | goto end; | |
1673 | } | |
1674 | ||
1675 | ret = bt_ctf_field_floating_point_set_value(field, value); | |
1676 | assert(!ret); | |
1677 | stack_top(notit->stack)->index++; | |
1678 | ||
1679 | end: | |
1680 | BT_PUT(field); | |
1681 | ||
1682 | return status; | |
1683 | } | |
1684 | ||
1685 | static | |
1686 | enum bt_ctf_btr_status btr_string_begin_cb( | |
1687 | struct bt_ctf_field_type *type, void *data) | |
1688 | { | |
1689 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1690 | struct bt_ctf_field *field = NULL; | |
1691 | struct bt_ctf_notif_iter *notit = data; | |
1692 | int ret; | |
1693 | ||
1694 | /* Create next field */ | |
1695 | field = get_next_field(notit); | |
1696 | if (!field) { | |
1697 | PERR("Failed to get next field (string)\n"); | |
1698 | status = BT_CTF_BTR_STATUS_ERROR; | |
1699 | goto end; | |
1700 | } | |
1701 | ||
1702 | /* | |
1703 | * Push on stack. Not a compound type per se, but we know that only | |
1704 | * btr_string_cb() may be called between this call and a subsequent | |
1705 | * call to btr_string_end_cb(). | |
1706 | */ | |
1707 | ret = stack_push(notit->stack, field); | |
1708 | if (ret) { | |
1709 | PERR("Failed to push string field onto the stack\n"); | |
1710 | status = BT_CTF_BTR_STATUS_ERROR; | |
1711 | goto end; | |
1712 | } | |
1713 | ||
e5df2ae3 JG |
1714 | /* |
1715 | * Initialize string field payload to an empty string since in the | |
1716 | * case of a length 0 string the btr_string_cb won't be called and | |
1717 | * we will end up with an unset string payload. | |
1718 | */ | |
1719 | ret = bt_ctf_field_string_set_value(field, ""); | |
1720 | if (ret) { | |
1721 | PERR("Failed to initialize string field\n"); | |
1722 | status = BT_CTF_BTR_STATUS_ERROR; | |
1723 | goto end; | |
1724 | } | |
1725 | ||
e98a2d6e PP |
1726 | end: |
1727 | BT_PUT(field); | |
1728 | ||
1729 | return status; | |
1730 | } | |
1731 | ||
1732 | static | |
1733 | enum bt_ctf_btr_status btr_string_cb(const char *value, | |
1734 | size_t len, struct bt_ctf_field_type *type, void *data) | |
1735 | { | |
1736 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1737 | struct bt_ctf_field *field = NULL; | |
1738 | struct bt_ctf_notif_iter *notit = data; | |
1739 | int ret; | |
1740 | ||
1741 | /* Get string field */ | |
1742 | field = stack_top(notit->stack)->base; | |
1743 | assert(field); | |
1744 | ||
1745 | /* Append current string */ | |
1746 | ret = bt_ctf_field_string_append_len(field, value, len); | |
1747 | if (ret) { | |
1748 | PERR("Failed to append a string to a string field\n"); | |
1749 | status = BT_CTF_BTR_STATUS_ERROR; | |
1750 | goto end; | |
1751 | } | |
1752 | ||
1753 | end: | |
1754 | return status; | |
1755 | } | |
1756 | ||
1757 | static | |
1758 | enum bt_ctf_btr_status btr_string_end_cb( | |
1759 | struct bt_ctf_field_type *type, void *data) | |
1760 | { | |
1761 | struct bt_ctf_notif_iter *notit = data; | |
1762 | ||
1763 | /* Pop string field */ | |
1764 | stack_pop(notit->stack); | |
1765 | ||
1766 | /* Go to next field */ | |
1767 | stack_top(notit->stack)->index++; | |
1768 | ||
1769 | return BT_CTF_BTR_STATUS_OK; | |
1770 | } | |
1771 | ||
1772 | enum bt_ctf_btr_status btr_compound_begin_cb( | |
1773 | struct bt_ctf_field_type *type, void *data) | |
1774 | { | |
1775 | enum bt_ctf_btr_status status = BT_CTF_BTR_STATUS_OK; | |
1776 | struct bt_ctf_notif_iter *notit = data; | |
1777 | struct bt_ctf_field *field; | |
1778 | int ret; | |
1779 | ||
1780 | /* Create field */ | |
1781 | if (stack_empty(notit->stack)) { | |
1782 | /* Root: create dynamic scope field */ | |
1783 | *notit->cur_dscope_field = bt_ctf_field_create(type); | |
1784 | field = *notit->cur_dscope_field; | |
1785 | ||
1786 | /* | |
1787 | * Field will be put at the end of this function | |
1788 | * (stack_push() will take one reference, but this | |
1789 | * reference is lost upon the equivalent stack_pop() | |
1790 | * later), so also get it for our context to own it. | |
1791 | */ | |
1792 | bt_get(*notit->cur_dscope_field); | |
1793 | } else { | |
1794 | field = get_next_field(notit); | |
1795 | } | |
1796 | ||
1797 | if (!field) { | |
1798 | PERR("Failed to get next field or create dynamic scope field\n"); | |
1799 | status = BT_CTF_BTR_STATUS_ERROR; | |
1800 | goto end; | |
1801 | } | |
1802 | ||
1803 | /* Push field */ | |
1804 | ret = stack_push(notit->stack, field); | |
1805 | if (ret) { | |
1806 | PERR("Failed to push compound field onto the stack\n"); | |
1807 | status = BT_CTF_BTR_STATUS_ERROR; | |
1808 | goto end; | |
1809 | } | |
1810 | ||
1811 | end: | |
1812 | BT_PUT(field); | |
1813 | ||
1814 | return status; | |
1815 | } | |
1816 | ||
1817 | enum bt_ctf_btr_status btr_compound_end_cb( | |
1818 | struct bt_ctf_field_type *type, void *data) | |
1819 | { | |
1820 | struct bt_ctf_notif_iter *notit = data; | |
1821 | ||
1822 | assert(!stack_empty(notit->stack)); | |
1823 | ||
1824 | /* Pop stack */ | |
1825 | stack_pop(notit->stack); | |
1826 | ||
1827 | /* If the stack is not empty, increment the base's index */ | |
1828 | if (!stack_empty(notit->stack)) { | |
1829 | stack_top(notit->stack)->index++; | |
1830 | } | |
1831 | ||
1832 | return BT_CTF_BTR_STATUS_OK; | |
1833 | } | |
1834 | ||
1835 | static | |
1836 | struct bt_ctf_field *resolve_field(struct bt_ctf_notif_iter *notit, | |
1837 | struct bt_ctf_field_path *path) | |
1838 | { | |
1839 | struct bt_ctf_field *field = NULL; | |
1840 | unsigned int i; | |
1841 | ||
1842 | switch (bt_ctf_field_path_get_root_scope(path)) { | |
1843 | case BT_CTF_SCOPE_TRACE_PACKET_HEADER: | |
1844 | field = notit->dscopes.trace_packet_header; | |
1845 | break; | |
1846 | case BT_CTF_SCOPE_STREAM_PACKET_CONTEXT: | |
1847 | field = notit->dscopes.stream_packet_context; | |
1848 | break; | |
1849 | case BT_CTF_SCOPE_STREAM_EVENT_HEADER: | |
1850 | field = notit->dscopes.stream_event_header; | |
1851 | break; | |
1852 | case BT_CTF_SCOPE_STREAM_EVENT_CONTEXT: | |
1853 | field = notit->dscopes.stream_event_context; | |
1854 | break; | |
1855 | case BT_CTF_SCOPE_EVENT_CONTEXT: | |
1856 | field = notit->dscopes.event_context; | |
1857 | break; | |
1858 | case BT_CTF_SCOPE_EVENT_FIELDS: | |
1859 | field = notit->dscopes.event_payload; | |
1860 | break; | |
1861 | default: | |
1862 | break; | |
1863 | } | |
1864 | ||
1865 | if (!field) { | |
1866 | goto end; | |
1867 | } | |
1868 | ||
1869 | bt_get(field); | |
1870 | ||
1871 | for (i = 0; i < bt_ctf_field_path_get_index_count(path); ++i) { | |
1872 | struct bt_ctf_field *next_field = NULL; | |
1873 | struct bt_ctf_field_type *field_type; | |
1874 | int index = bt_ctf_field_path_get_index(path, i); | |
1875 | ||
1876 | field_type = bt_ctf_field_get_type(field); | |
1877 | if (!field_type) { | |
1878 | BT_PUT(field); | |
1879 | goto end; | |
1880 | } | |
1881 | ||
1882 | if (is_struct_type(field_type)) { | |
1883 | next_field = bt_ctf_field_structure_get_field_by_index( | |
1884 | field, index); | |
1885 | } else if (is_variant_type(field_type)) { | |
1886 | next_field = | |
1887 | bt_ctf_field_variant_get_current_field(field); | |
1888 | } | |
1889 | ||
1890 | BT_PUT(field); | |
1891 | BT_PUT(field_type); | |
1892 | ||
1893 | if (!next_field) { | |
1894 | goto end; | |
1895 | } | |
1896 | ||
1897 | /* Move next field -> field */ | |
1898 | BT_MOVE(field, next_field); | |
1899 | } | |
1900 | ||
1901 | end: | |
1902 | return field; | |
1903 | } | |
1904 | ||
1905 | static | |
1906 | int64_t btr_get_sequence_length_cb(struct bt_ctf_field_type *type, void *data) | |
1907 | { | |
1908 | int64_t ret = -1; | |
1909 | int iret; | |
1910 | struct bt_ctf_field_path *field_path; | |
1911 | struct bt_ctf_notif_iter *notit = data; | |
2cf1d51e | 1912 | struct bt_ctf_field *length_field = NULL; |
e98a2d6e PP |
1913 | uint64_t length; |
1914 | ||
1915 | field_path = bt_ctf_field_type_sequence_get_length_field_path(type); | |
1916 | if (!field_path) { | |
1917 | goto end; | |
1918 | } | |
1919 | ||
2cf1d51e JG |
1920 | length_field = resolve_field(notit, field_path); |
1921 | if (!length_field) { | |
e98a2d6e PP |
1922 | goto end; |
1923 | } | |
1924 | ||
2cf1d51e | 1925 | iret = bt_ctf_field_unsigned_integer_get_value(length_field, &length); |
e98a2d6e PP |
1926 | if (iret) { |
1927 | goto end; | |
1928 | } | |
1929 | ||
2cf1d51e JG |
1930 | iret = bt_ctf_field_sequence_set_length(stack_top(notit->stack)->base, |
1931 | length_field); | |
1932 | if (iret) { | |
1933 | goto end; | |
1934 | } | |
e98a2d6e PP |
1935 | ret = (int64_t) length; |
1936 | ||
1937 | end: | |
2cf1d51e | 1938 | BT_PUT(length_field); |
e98a2d6e PP |
1939 | BT_PUT(field_path); |
1940 | ||
1941 | return ret; | |
1942 | } | |
1943 | ||
1944 | static | |
1945 | struct bt_ctf_field_type *btr_get_variant_type_cb( | |
1946 | struct bt_ctf_field_type *type, void *data) | |
1947 | { | |
1948 | struct bt_ctf_field_path *path; | |
1949 | struct bt_ctf_notif_iter *notit = data; | |
1950 | struct bt_ctf_field *tag_field = NULL; | |
1951 | struct bt_ctf_field *selected_field = NULL; | |
1952 | struct bt_ctf_field_type *selected_field_type = NULL; | |
1953 | ||
1954 | path = bt_ctf_field_type_variant_get_tag_field_path(type); | |
1955 | if (!path) { | |
1956 | goto end; | |
1957 | } | |
1958 | ||
1959 | tag_field = resolve_field(notit, path); | |
1960 | if (!tag_field) { | |
1961 | goto end; | |
1962 | } | |
1963 | ||
1964 | /* | |
1965 | * We found the enumeration tag field instance which should be | |
1966 | * able to select a current field for this variant. This | |
1967 | * callback function we're in is called _after_ | |
1968 | * compound_begin(), so the current stack top's base field is | |
1969 | * the variant field in question. We get the selected field here | |
1970 | * thanks to this tag field (thus creating the selected field), | |
1971 | * which will also provide us with its type. Then, this field | |
1972 | * will remain the current selected one until the next callback | |
1973 | * function call which is used to fill the current selected | |
1974 | * field. | |
1975 | */ | |
1976 | selected_field = bt_ctf_field_variant_get_field( | |
1977 | stack_top(notit->stack)->base, tag_field); | |
1978 | if (!selected_field) { | |
1979 | goto end; | |
1980 | } | |
1981 | ||
1982 | selected_field_type = bt_ctf_field_get_type(selected_field); | |
1983 | ||
1984 | end: | |
1985 | BT_PUT(tag_field); | |
1986 | BT_PUT(selected_field); | |
f77ae72a | 1987 | BT_PUT(path); |
e98a2d6e PP |
1988 | |
1989 | return selected_field_type; | |
1990 | } | |
1991 | ||
1556a1af JG |
1992 | static |
1993 | int set_event_clocks(struct bt_ctf_event *event, | |
1994 | struct bt_ctf_notif_iter *notit) | |
1995 | { | |
1996 | int ret; | |
1997 | GHashTableIter iter; | |
ac0c6bdd | 1998 | struct bt_ctf_clock_class *clock_class; |
1556a1af JG |
1999 | uint64_t *clock_state; |
2000 | ||
2001 | g_hash_table_iter_init(&iter, notit->clock_states); | |
2002 | ||
ac0c6bdd | 2003 | while (g_hash_table_iter_next(&iter, (gpointer) &clock_class, |
1556a1af JG |
2004 | (gpointer) &clock_state)) { |
2005 | struct bt_ctf_clock_value *clock_value; | |
2006 | ||
ac0c6bdd PP |
2007 | clock_value = bt_ctf_clock_value_create(clock_class, |
2008 | *clock_state); | |
1556a1af JG |
2009 | if (!clock_value) { |
2010 | ret = -1; | |
2011 | goto end; | |
2012 | } | |
3f3c46b8 | 2013 | ret = bt_ctf_event_set_clock_value(event, clock_value); |
1556a1af JG |
2014 | bt_put(clock_value); |
2015 | if (ret) { | |
2016 | goto end; | |
2017 | } | |
2018 | } | |
2019 | ret = 0; | |
2020 | end: | |
2021 | return ret; | |
2022 | } | |
2023 | ||
78586d8a JG |
2024 | static |
2025 | struct bt_ctf_event *create_event(struct bt_ctf_notif_iter *notit) | |
e98a2d6e | 2026 | { |
e98a2d6e | 2027 | int ret; |
78586d8a | 2028 | struct bt_ctf_event *event; |
e98a2d6e | 2029 | |
78586d8a | 2030 | /* Create event object. */ |
e98a2d6e PP |
2031 | event = bt_ctf_event_create(notit->meta.event_class); |
2032 | if (!event) { | |
2033 | goto error; | |
2034 | } | |
2035 | ||
78586d8a | 2036 | /* Set header, stream event context, context, and payload fields. */ |
e98a2d6e PP |
2037 | ret = bt_ctf_event_set_header(event, |
2038 | notit->dscopes.stream_event_header); | |
2039 | if (ret) { | |
2040 | goto error; | |
2041 | } | |
2042 | ||
2043 | ret = bt_ctf_event_set_stream_event_context(event, | |
2044 | notit->dscopes.stream_event_context); | |
2045 | if (ret) { | |
2046 | goto error; | |
2047 | } | |
2048 | ||
2049 | ret = bt_ctf_event_set_event_context(event, | |
2050 | notit->dscopes.event_context); | |
2051 | if (ret) { | |
2052 | goto error; | |
2053 | } | |
2054 | ||
9ac68eb1 | 2055 | ret = bt_ctf_event_set_event_payload(event, |
e98a2d6e PP |
2056 | notit->dscopes.event_payload); |
2057 | if (ret) { | |
2058 | goto error; | |
2059 | } | |
2060 | ||
1556a1af JG |
2061 | ret = set_event_clocks(event, notit); |
2062 | if (ret) { | |
2063 | goto error; | |
2064 | } | |
2065 | ||
78586d8a | 2066 | /* Associate with current packet. */ |
e98a2d6e PP |
2067 | assert(notit->packet); |
2068 | ret = bt_ctf_event_set_packet(event, notit->packet); | |
2069 | if (ret) { | |
2070 | goto error; | |
2071 | } | |
2072 | ||
2073 | goto end; | |
e98a2d6e PP |
2074 | error: |
2075 | BT_PUT(event); | |
e98a2d6e PP |
2076 | end: |
2077 | return event; | |
2078 | } | |
2079 | ||
78586d8a JG |
2080 | static |
2081 | void create_packet(struct bt_ctf_notif_iter *notit) | |
e98a2d6e PP |
2082 | { |
2083 | int ret; | |
2084 | struct bt_ctf_stream *stream = NULL; | |
2085 | struct bt_ctf_packet *packet = NULL; | |
2086 | ||
2087 | /* Ask the user for the stream */ | |
2088 | stream = notit->medium.medops.get_stream(notit->meta.stream_class, | |
78586d8a | 2089 | notit->medium.data); |
e98a2d6e PP |
2090 | if (!stream) { |
2091 | goto error; | |
2092 | } | |
2093 | ||
2094 | /* Create packet */ | |
2095 | packet = bt_ctf_packet_create(stream); | |
2096 | if (!packet) { | |
2097 | goto error; | |
2098 | } | |
2099 | ||
2100 | /* Set packet's context and header fields */ | |
2101 | if (notit->dscopes.trace_packet_header) { | |
2102 | ret = bt_ctf_packet_set_header(packet, | |
78586d8a | 2103 | notit->dscopes.trace_packet_header); |
e98a2d6e PP |
2104 | if (ret) { |
2105 | goto error; | |
2106 | } | |
2107 | } | |
2108 | ||
2109 | if (notit->dscopes.stream_packet_context) { | |
2110 | ret = bt_ctf_packet_set_context(packet, | |
78586d8a | 2111 | notit->dscopes.stream_packet_context); |
e98a2d6e PP |
2112 | if (ret) { |
2113 | goto error; | |
2114 | } | |
2115 | } | |
2116 | ||
2117 | goto end; | |
e98a2d6e PP |
2118 | error: |
2119 | BT_PUT(packet); | |
e98a2d6e PP |
2120 | end: |
2121 | BT_MOVE(notit->packet, packet); | |
2122 | } | |
2123 | ||
78586d8a JG |
2124 | static |
2125 | void notify_new_packet(struct bt_ctf_notif_iter *notit, | |
2126 | struct bt_notification **notification) | |
e98a2d6e | 2127 | { |
78586d8a | 2128 | struct bt_notification *ret; |
e98a2d6e | 2129 | |
78586d8a | 2130 | /* Initialize the iterator's current packet */ |
e98a2d6e PP |
2131 | create_packet(notit); |
2132 | if (!notit->packet) { | |
78586d8a | 2133 | return; |
e98a2d6e PP |
2134 | } |
2135 | ||
ea0e619e | 2136 | ret = bt_notification_packet_begin_create(notit->packet); |
78586d8a JG |
2137 | if (!ret) { |
2138 | return; | |
2139 | } | |
2140 | *notification = ret; | |
e98a2d6e PP |
2141 | } |
2142 | ||
78586d8a JG |
2143 | static |
2144 | void notify_end_of_packet(struct bt_ctf_notif_iter *notit, | |
2145 | struct bt_notification **notification) | |
e98a2d6e | 2146 | { |
78586d8a | 2147 | struct bt_notification *ret; |
e98a2d6e | 2148 | |
e98a2d6e | 2149 | if (!notit->packet) { |
78586d8a | 2150 | return; |
e98a2d6e PP |
2151 | } |
2152 | ||
78586d8a JG |
2153 | ret = bt_notification_packet_end_create(notit->packet); |
2154 | if (!ret) { | |
2155 | return; | |
2156 | } | |
2157 | BT_PUT(notit->packet); | |
2158 | *notification = ret; | |
e98a2d6e PP |
2159 | } |
2160 | ||
78586d8a JG |
2161 | static |
2162 | void notify_event(struct bt_ctf_notif_iter *notit, | |
0982a26d | 2163 | struct bt_clock_class_priority_map *cc_prio_map, |
78586d8a | 2164 | struct bt_notification **notification) |
e98a2d6e | 2165 | { |
78586d8a JG |
2166 | struct bt_ctf_event *event; |
2167 | struct bt_notification *ret = NULL; | |
e98a2d6e PP |
2168 | |
2169 | /* Create event */ | |
2170 | event = create_event(notit); | |
2171 | if (!event) { | |
78586d8a | 2172 | goto end; |
e98a2d6e | 2173 | } |
e98a2d6e | 2174 | |
0982a26d | 2175 | ret = bt_notification_event_create(event, cc_prio_map); |
78586d8a JG |
2176 | if (!ret) { |
2177 | goto end; | |
e98a2d6e | 2178 | } |
78586d8a JG |
2179 | *notification = ret; |
2180 | end: | |
2181 | BT_PUT(event); | |
e98a2d6e PP |
2182 | } |
2183 | ||
c44c3e70 JG |
2184 | static |
2185 | int init_clock_states(GHashTable *clock_states, struct bt_ctf_trace *trace) | |
2186 | { | |
ac0c6bdd | 2187 | int clock_class_count, i, ret = 0; |
c44c3e70 | 2188 | |
ac0c6bdd PP |
2189 | clock_class_count = bt_ctf_trace_get_clock_class_count(trace); |
2190 | if (clock_class_count <= 0) { | |
c44c3e70 JG |
2191 | ret = -1; |
2192 | goto end; | |
2193 | } | |
2194 | ||
ac0c6bdd PP |
2195 | for (i = 0; i < clock_class_count; i++) { |
2196 | struct bt_ctf_clock_class *clock_class; | |
c44c3e70 | 2197 | |
9ac68eb1 | 2198 | clock_class = bt_ctf_trace_get_clock_class_by_index(trace, i); |
ac0c6bdd | 2199 | if (!clock_class) { |
c44c3e70 JG |
2200 | ret = -1; |
2201 | goto end; | |
2202 | } | |
2203 | ||
ac0c6bdd PP |
2204 | g_hash_table_insert(clock_states, bt_get(clock_class), NULL); |
2205 | bt_put(clock_class); | |
c44c3e70 JG |
2206 | } |
2207 | end: | |
2208 | return ret; | |
2209 | } | |
2210 | ||
5f870343 JG |
2211 | static |
2212 | void init_trace_field_path_cache(struct bt_ctf_trace *trace, | |
2213 | struct trace_field_path_cache *trace_field_path_cache) | |
2214 | { | |
2215 | int stream_id = -1; | |
2216 | int stream_instance_id = -1; | |
2217 | int i, count; | |
2218 | struct bt_ctf_field_type *packet_header = NULL; | |
2219 | ||
2220 | packet_header = bt_ctf_trace_get_packet_header_type(trace); | |
2221 | if (!packet_header) { | |
2222 | goto end; | |
2223 | } | |
2224 | ||
2225 | if (!bt_ctf_field_type_is_structure(packet_header)) { | |
2226 | goto end; | |
2227 | } | |
2228 | ||
2229 | count = bt_ctf_field_type_structure_get_field_count(packet_header); | |
2230 | if (count < 0) { | |
2231 | goto end; | |
2232 | } | |
2233 | ||
2234 | for (i = 0; (i < count && (stream_id == -1 || stream_instance_id == -1)); i++) { | |
2235 | int ret; | |
2236 | const char *field_name; | |
2237 | ||
2238 | ret = bt_ctf_field_type_structure_get_field(packet_header, | |
2239 | &field_name, NULL, i); | |
2240 | if (ret) { | |
2241 | goto end; | |
2242 | } | |
2243 | ||
2244 | if (stream_id == -1 && !strcmp(field_name, "stream_id")) { | |
2245 | stream_id = i; | |
2246 | } else if (stream_instance_id == -1 && | |
2247 | !strcmp(field_name, "stream_instance_id")) { | |
2248 | stream_instance_id = i; | |
2249 | } | |
2250 | } | |
2251 | end: | |
2252 | trace_field_path_cache->stream_id = stream_id; | |
2253 | trace_field_path_cache->stream_instance_id = stream_instance_id; | |
2254 | BT_PUT(packet_header); | |
2255 | } | |
2256 | ||
c44c3e70 | 2257 | BT_HIDDEN |
e98a2d6e PP |
2258 | struct bt_ctf_notif_iter *bt_ctf_notif_iter_create(struct bt_ctf_trace *trace, |
2259 | size_t max_request_sz, | |
2260 | struct bt_ctf_notif_iter_medium_ops medops, | |
2261 | void *data, FILE *err_stream) | |
2262 | { | |
c44c3e70 | 2263 | int ret; |
e98a2d6e PP |
2264 | struct bt_ctf_notif_iter *notit = NULL; |
2265 | struct bt_ctf_btr_cbs cbs = { | |
2266 | .types = { | |
2267 | .signed_int = btr_signed_int_cb, | |
2268 | .unsigned_int = btr_unsigned_int_cb, | |
2269 | .floating_point = btr_floating_point_cb, | |
2270 | .string_begin = btr_string_begin_cb, | |
2271 | .string = btr_string_cb, | |
2272 | .string_end = btr_string_end_cb, | |
2273 | .compound_begin = btr_compound_begin_cb, | |
2274 | .compound_end = btr_compound_end_cb, | |
2275 | }, | |
2276 | .query = { | |
2277 | .get_sequence_length = btr_get_sequence_length_cb, | |
2278 | .get_variant_type = btr_get_variant_type_cb, | |
2279 | }, | |
2280 | }; | |
2281 | ||
2282 | assert(trace); | |
2283 | assert(medops.request_bytes); | |
f3985ab1 | 2284 | assert(medops.get_stream); |
e98a2d6e PP |
2285 | notit = g_new0(struct bt_ctf_notif_iter, 1); |
2286 | if (!notit) { | |
2287 | PERR("Failed to allocate memory for CTF notification iterator\n"); | |
2288 | goto end; | |
2289 | } | |
c44c3e70 JG |
2290 | notit->clock_states = g_hash_table_new_full(g_direct_hash, |
2291 | g_direct_equal, bt_put, g_free); | |
2292 | if (!notit->clock_states) { | |
2293 | PERR("Failed to create hash table\n"); | |
2294 | goto error; | |
2295 | } | |
2296 | ret = init_clock_states(notit->clock_states, trace); | |
2297 | if (ret) { | |
2298 | PERR("Failed to initialize stream clock states\n"); | |
2299 | goto error; | |
2300 | } | |
35d47007 | 2301 | notit->meta.trace = bt_get(trace); |
e98a2d6e PP |
2302 | notit->medium.medops = medops; |
2303 | notit->medium.max_request_sz = max_request_sz; | |
2304 | notit->medium.data = data; | |
2305 | notit->err_stream = err_stream; | |
2306 | notit->stack = stack_new(notit); | |
2307 | if (!notit->stack) { | |
2308 | PERR("Failed to create stack\n"); | |
c44c3e70 | 2309 | goto error; |
e98a2d6e PP |
2310 | } |
2311 | ||
2312 | notit->btr = bt_ctf_btr_create(cbs, notit, err_stream); | |
2313 | if (!notit->btr) { | |
2314 | PERR("Failed to create binary type reader\n"); | |
c44c3e70 | 2315 | goto error; |
e98a2d6e PP |
2316 | } |
2317 | ||
2318 | bt_ctf_notif_iter_reset(notit); | |
2319 | ||
5f870343 JG |
2320 | init_trace_field_path_cache(trace, ¬it->trace_field_path_cache); |
2321 | notit->sc_field_path_caches = g_hash_table_new_full(g_direct_hash, | |
2322 | g_direct_equal, bt_put, g_free); | |
2323 | if (!notit->sc_field_path_caches) { | |
2324 | PERR("Failed to create stream class field path caches\n"); | |
2325 | goto error; | |
2326 | } | |
2327 | ||
2328 | notit->field_overrides = g_hash_table_new_full(g_direct_hash, | |
2329 | g_direct_equal, bt_put, g_free); | |
2330 | if (!notit->field_overrides) { | |
2331 | goto error; | |
2332 | } | |
2333 | ||
e98a2d6e PP |
2334 | end: |
2335 | return notit; | |
c44c3e70 JG |
2336 | error: |
2337 | bt_ctf_notif_iter_destroy(notit); | |
2338 | notit = NULL; | |
2339 | goto end; | |
e98a2d6e PP |
2340 | } |
2341 | ||
2342 | void bt_ctf_notif_iter_destroy(struct bt_ctf_notif_iter *notit) | |
2343 | { | |
2344 | BT_PUT(notit->meta.trace); | |
2345 | BT_PUT(notit->meta.stream_class); | |
2346 | BT_PUT(notit->meta.event_class); | |
2347 | BT_PUT(notit->packet); | |
5f870343 | 2348 | BT_PUT(notit->cur_timestamp_end); |
e98a2d6e PP |
2349 | put_all_dscopes(notit); |
2350 | ||
2351 | if (notit->stack) { | |
2352 | stack_destroy(notit->stack); | |
2353 | } | |
2354 | ||
2355 | if (notit->btr) { | |
2356 | bt_ctf_btr_destroy(notit->btr); | |
2357 | } | |
2358 | ||
c44c3e70 JG |
2359 | if (notit->clock_states) { |
2360 | g_hash_table_destroy(notit->clock_states); | |
2361 | } | |
5f870343 JG |
2362 | |
2363 | if (notit->sc_field_path_caches) { | |
2364 | g_hash_table_destroy(notit->sc_field_path_caches); | |
2365 | } | |
2366 | ||
2367 | if (notit->field_overrides) { | |
2368 | g_hash_table_destroy(notit->field_overrides); | |
2369 | } | |
e98a2d6e PP |
2370 | g_free(notit); |
2371 | } | |
2372 | ||
2373 | enum bt_ctf_notif_iter_status bt_ctf_notif_iter_get_next_notification( | |
2374 | struct bt_ctf_notif_iter *notit, | |
0982a26d | 2375 | struct bt_clock_class_priority_map *cc_prio_map, |
78586d8a | 2376 | struct bt_notification **notification) |
e98a2d6e PP |
2377 | { |
2378 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
2379 | ||
2380 | assert(notit); | |
2381 | assert(notification); | |
2382 | ||
2383 | while (true) { | |
2384 | status = handle_state(notit); | |
7cdc2bab MD |
2385 | if (status == BT_CTF_NOTIF_ITER_STATUS_AGAIN) { |
2386 | PDBG("Medium operation reported \"try again later\""); | |
2387 | goto end; | |
2388 | } | |
e98a2d6e PP |
2389 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { |
2390 | if (status == BT_CTF_NOTIF_ITER_STATUS_EOF) { | |
78586d8a | 2391 | PDBG("Medium operation reported end of stream\n"); |
e98a2d6e PP |
2392 | } else { |
2393 | PERR("Failed to handle state:\n"); | |
78586d8a | 2394 | PERR("\tState: %d\n", notit->state); |
e98a2d6e PP |
2395 | } |
2396 | goto end; | |
2397 | } | |
2398 | ||
2399 | switch (notit->state) { | |
2400 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
2401 | PDBG("Emitting new packet notification\n"); | |
2402 | notify_new_packet(notit, notification); | |
2403 | if (!*notification) { | |
2404 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2405 | } | |
2406 | goto end; | |
2407 | case STATE_EMIT_NOTIF_EVENT: | |
2408 | PDBG("Emitting event notification\n"); | |
0982a26d | 2409 | notify_event(notit, cc_prio_map, notification); |
e98a2d6e PP |
2410 | if (!*notification) { |
2411 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2412 | } | |
2413 | goto end; | |
2414 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
5f870343 JG |
2415 | /* Update clock with timestamp_end field. */ |
2416 | if (notit->cur_timestamp_end) { | |
2417 | enum bt_ctf_btr_status btr_status; | |
2418 | struct bt_ctf_field_type *field_type = | |
2419 | bt_ctf_field_get_type( | |
2420 | notit->cur_timestamp_end); | |
2421 | ||
f45bfe88 PP |
2422 | btr_status = update_clock(notit, |
2423 | notit->cur_timestamp_end); | |
5f870343 JG |
2424 | BT_PUT(field_type); |
2425 | if (btr_status != BT_CTF_BTR_STATUS_OK) { | |
2426 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2427 | goto end; | |
2428 | } | |
2429 | } | |
2430 | ||
e98a2d6e PP |
2431 | PDBG("Emitting end of packet notification\n"); |
2432 | notify_end_of_packet(notit, notification); | |
2433 | if (!*notification) { | |
2434 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; | |
2435 | } | |
2436 | goto end; | |
2437 | default: | |
2438 | /* Non-emitting state: continue */ | |
2439 | break; | |
2440 | } | |
2441 | } | |
2442 | ||
2443 | end: | |
2444 | return status; | |
2445 | } | |
87187cbf PP |
2446 | |
2447 | BT_HIDDEN | |
2448 | enum bt_ctf_notif_iter_status bt_ctf_notif_iter_get_packet_header_context_fields( | |
2449 | struct bt_ctf_notif_iter *notit, | |
2450 | struct bt_ctf_field **packet_header_field, | |
2451 | struct bt_ctf_field **packet_context_field) | |
2452 | { | |
2453 | enum bt_ctf_notif_iter_status status = BT_CTF_NOTIF_ITER_STATUS_OK; | |
2454 | ||
2455 | assert(notit); | |
2456 | ||
2457 | if (notit->state == STATE_EMIT_NOTIF_NEW_PACKET) { | |
2458 | /* We're already there */ | |
2459 | goto set_fields; | |
2460 | } | |
2461 | ||
2462 | while (true) { | |
2463 | status = handle_state(notit); | |
2464 | if (status == BT_CTF_NOTIF_ITER_STATUS_AGAIN) { | |
2465 | PDBG("Medium operation reported \"try again later\""); | |
2466 | goto end; | |
2467 | } | |
2468 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK) { | |
2469 | if (status == BT_CTF_NOTIF_ITER_STATUS_EOF) { | |
2470 | PDBG("Medium operation reported end of stream\n"); | |
2471 | } else { | |
2472 | PERR("Failed to handle state:\n"); | |
2473 | PERR("\tState: %d\n", notit->state); | |
2474 | } | |
2475 | goto end; | |
2476 | } | |
2477 | ||
2478 | switch (notit->state) { | |
2479 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
2480 | /* | |
2481 | * Packet header and context fields are | |
2482 | * potentially decoded (or they don't exist). | |
2483 | */ | |
2484 | goto set_fields; | |
2485 | case STATE_INIT: | |
2486 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
2487 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
2488 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
2489 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
2490 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
2491 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
2492 | /* Non-emitting state: continue */ | |
2493 | break; | |
2494 | default: | |
2495 | /* | |
2496 | * We should never get past the | |
2497 | * STATE_EMIT_NOTIF_NEW_PACKET state. | |
2498 | */ | |
0fbb9a9f | 2499 | abort(); |
87187cbf PP |
2500 | } |
2501 | } | |
2502 | ||
2503 | set_fields: | |
2504 | if (packet_header_field) { | |
2505 | *packet_header_field = bt_get(notit->dscopes.trace_packet_header); | |
2506 | } | |
2507 | ||
2508 | if (packet_context_field) { | |
2509 | *packet_context_field = bt_get(notit->dscopes.stream_packet_context); | |
2510 | } | |
2511 | ||
2512 | end: | |
2513 | return status; | |
2514 | } |