Commit | Line | Data |
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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 | ||
fdf0e7a0 PP |
26 | #define BT_LOG_TAG "PLUGIN-CTF-NOTIF-ITER" |
27 | #include "logging.h" | |
28 | ||
e98a2d6e PP |
29 | #include <stdint.h> |
30 | #include <inttypes.h> | |
31 | #include <stdio.h> | |
32 | #include <stddef.h> | |
33 | #include <stdbool.h> | |
8b45963b | 34 | #include <babeltrace/assert-internal.h> |
e98a2d6e | 35 | #include <string.h> |
e0831b38 | 36 | #include <babeltrace/babeltrace.h> |
8deee039 | 37 | #include <babeltrace/common-internal.h> |
e98a2d6e | 38 | #include <glib.h> |
0fbb9a9f | 39 | #include <stdlib.h> |
e98a2d6e | 40 | |
06a626b8 JG |
41 | #include "notif-iter.h" |
42 | #include "../btr/btr.h" | |
e98a2d6e | 43 | |
839d52a5 | 44 | struct bt_notif_iter; |
e98a2d6e PP |
45 | |
46 | /* A visit stack entry */ | |
47 | struct stack_entry { | |
48 | /* | |
49 | * Current base field, one of: | |
50 | * | |
51 | * * string | |
52 | * * structure | |
53 | * * array | |
54 | * * sequence | |
55 | * * variant | |
56 | * | |
a6918753 | 57 | * Field is borrowed. |
e98a2d6e | 58 | */ |
839d52a5 | 59 | struct bt_field *base; |
e98a2d6e PP |
60 | |
61 | /* index of next field to set */ | |
62 | size_t index; | |
63 | }; | |
64 | ||
65 | /* Visit stack */ | |
66 | struct stack { | |
87bdbbb0 PP |
67 | /* Entries (struct stack_entry) */ |
68 | GArray *entries; | |
69 | ||
70 | /* Number of active entries */ | |
71 | size_t size; | |
e98a2d6e PP |
72 | }; |
73 | ||
74 | /* State */ | |
75 | enum state { | |
76 | STATE_INIT, | |
77 | STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN, | |
78 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
79 | STATE_AFTER_TRACE_PACKET_HEADER, | |
80 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN, | |
81 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
82 | STATE_AFTER_STREAM_PACKET_CONTEXT, | |
6ff151ad | 83 | STATE_EMIT_NOTIF_NEW_STREAM, |
e98a2d6e PP |
84 | STATE_EMIT_NOTIF_NEW_PACKET, |
85 | STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN, | |
86 | STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE, | |
87 | STATE_AFTER_STREAM_EVENT_HEADER, | |
88 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN, | |
89 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE, | |
90 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN, | |
91 | STATE_DSCOPE_EVENT_CONTEXT_CONTINUE, | |
92 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, | |
93 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
94 | STATE_EMIT_NOTIF_EVENT, | |
95 | STATE_EMIT_NOTIF_END_OF_PACKET, | |
6ff151ad | 96 | STATE_DONE, |
e98a2d6e PP |
97 | STATE_SKIP_PACKET_PADDING, |
98 | }; | |
99 | ||
5f870343 JG |
100 | struct trace_field_path_cache { |
101 | /* | |
102 | * Indexes of the stream_id and stream_instance_id field in the packet | |
103 | * header structure, -1 if unset. | |
104 | */ | |
105 | int stream_id; | |
106 | int stream_instance_id; | |
107 | }; | |
108 | ||
109 | struct stream_class_field_path_cache { | |
110 | /* | |
111 | * Indexes of the v and id fields in the stream event header structure, | |
112 | * -1 if unset. | |
113 | */ | |
114 | int v; | |
115 | int id; | |
116 | ||
117 | /* | |
118 | * index of the timestamp_end, packet_size and content_size fields in | |
119 | * the stream packet context structure. Set to -1 if the fields were | |
120 | * not found. | |
121 | */ | |
122 | int timestamp_end; | |
123 | int packet_size; | |
124 | int content_size; | |
125 | }; | |
126 | ||
127 | struct field_cb_override { | |
839d52a5 PP |
128 | enum bt_btr_status (* func)(void *value, |
129 | struct bt_field_type *type, void *data); | |
5f870343 JG |
130 | void *data; |
131 | }; | |
132 | ||
e98a2d6e | 133 | /* CTF notification iterator */ |
839d52a5 | 134 | struct bt_notif_iter { |
e98a2d6e PP |
135 | /* Visit stack */ |
136 | struct stack *stack; | |
137 | ||
f7c3ac09 PP |
138 | /* Current graph to create notifications (weak) */ |
139 | struct bt_graph *graph; | |
140 | ||
e98a2d6e PP |
141 | /* |
142 | * Current dynamic scope field pointer. | |
143 | * | |
a6918753 PP |
144 | * This is set by read_dscope_begin_state() and contains the |
145 | * value of one of the pointers in `dscopes` below. | |
e98a2d6e | 146 | */ |
a6918753 | 147 | struct bt_field *cur_dscope_field; |
e98a2d6e PP |
148 | |
149 | /* Trace and classes (owned by this) */ | |
150 | struct { | |
839d52a5 PP |
151 | struct bt_trace *trace; |
152 | struct bt_stream_class *stream_class; | |
153 | struct bt_event_class *event_class; | |
a6918753 | 154 | struct bt_clock_class_priority_map *cc_prio_map; |
e98a2d6e PP |
155 | } meta; |
156 | ||
a6918753 PP |
157 | /* Current packet header field wrapper (NULL if not created yet) */ |
158 | struct bt_packet_header_field *packet_header_field; | |
159 | ||
160 | /* Current packet header field wrapper (NULL if not created yet) */ | |
161 | struct bt_packet_context_field *packet_context_field; | |
162 | ||
163 | /* Current event header field (NULL if not created yet) */ | |
164 | struct bt_event_header_field *event_header_field; | |
165 | ||
e98a2d6e | 166 | /* Current packet (NULL if not created yet) */ |
839d52a5 | 167 | struct bt_packet *packet; |
e98a2d6e | 168 | |
5184a1d6 | 169 | /* Current stream (NULL if not set yet) */ |
839d52a5 | 170 | struct bt_stream *stream; |
5184a1d6 | 171 | |
a6918753 PP |
172 | /* Current event (NULL if not created yet) */ |
173 | struct bt_event *event; | |
174 | ||
175 | /* Current event notification (NULL if not created yet) */ | |
176 | struct bt_notification *event_notif; | |
177 | ||
5f870343 | 178 | /* |
a6918753 PP |
179 | * Current `timestamp_end` field (to consider before switching |
180 | * packets). If it's set, it's a field which is within | |
181 | * `dscopes.stream_packet_context` below, which is in `packet` | |
182 | * above. | |
5f870343 | 183 | */ |
839d52a5 | 184 | struct bt_field *cur_timestamp_end; |
5f870343 | 185 | |
e98a2d6e PP |
186 | /* Database of current dynamic scopes (owned by this) */ |
187 | struct { | |
839d52a5 PP |
188 | struct bt_field *trace_packet_header; |
189 | struct bt_field *stream_packet_context; | |
190 | struct bt_field *stream_event_header; | |
191 | struct bt_field *stream_event_context; | |
192 | struct bt_field *event_context; | |
193 | struct bt_field *event_payload; | |
e98a2d6e PP |
194 | } dscopes; |
195 | ||
5f870343 JG |
196 | /* |
197 | * Special field overrides. | |
198 | * | |
199 | * Overrides are used to implement the behaviours of special fields such | |
200 | * as "timestamp_end" (which must be ignored until the end of the | |
201 | * packet), "id" (event id) which can be present multiple times and must | |
202 | * be updated multiple time. | |
203 | * | |
204 | * This should be used to implement the behaviour of integer fields | |
205 | * mapped to clocks and other "tagged" fields (in CTF 2). | |
206 | * | |
839d52a5 | 207 | * bt_field_type to struct field_cb_override |
5f870343 JG |
208 | */ |
209 | GHashTable *field_overrides; | |
210 | ||
e98a2d6e PP |
211 | /* Current state */ |
212 | enum state state; | |
213 | ||
2cf1d51e | 214 | /* Current medium buffer data */ |
e98a2d6e PP |
215 | struct { |
216 | /* Last address provided by medium */ | |
217 | const uint8_t *addr; | |
218 | ||
219 | /* Buffer size provided by medium (bytes) */ | |
220 | size_t sz; | |
221 | ||
222 | /* Offset within whole packet of addr (bits) */ | |
223 | size_t packet_offset; | |
224 | ||
225 | /* Current position from addr (bits) */ | |
226 | size_t at; | |
9b876b7b PP |
227 | |
228 | /* Position of the last event header from addr (bits) */ | |
229 | size_t last_eh_at; | |
e98a2d6e PP |
230 | } buf; |
231 | ||
232 | /* Binary type reader */ | |
839d52a5 | 233 | struct bt_btr *btr; |
e98a2d6e | 234 | |
2cf1d51e | 235 | /* Current medium data */ |
e98a2d6e | 236 | struct { |
839d52a5 | 237 | struct bt_notif_iter_medium_ops medops; |
e98a2d6e PP |
238 | size_t max_request_sz; |
239 | void *data; | |
240 | } medium; | |
241 | ||
6ff151ad PP |
242 | /* Stream beginning was emitted */ |
243 | bool stream_begin_emitted; | |
244 | ||
e98a2d6e | 245 | /* Current packet size (bits) (-1 if unknown) */ |
e7a4393b | 246 | int64_t cur_packet_size; |
e98a2d6e PP |
247 | |
248 | /* Current content size (bits) (-1 if unknown) */ | |
e7a4393b | 249 | int64_t cur_content_size; |
c44c3e70 | 250 | |
bb230c9b JG |
251 | /* |
252 | * Offset, in the underlying media, of the current packet's start | |
253 | * (-1 if unknown). | |
254 | */ | |
255 | off_t cur_packet_offset; | |
256 | ||
839d52a5 | 257 | /* bt_clock_class to uint64_t. */ |
c44c3e70 | 258 | GHashTable *clock_states; |
5f870343 JG |
259 | |
260 | /* | |
261 | * Cache of the trace-constant field paths (event header type) | |
262 | * associated to the current trace. | |
263 | */ | |
264 | struct trace_field_path_cache trace_field_path_cache; | |
265 | ||
266 | /* | |
267 | * Field path cache associated with the current stream class. | |
268 | * Ownership of this structure belongs to the field_path_caches HT. | |
269 | */ | |
270 | struct stream_class_field_path_cache *cur_sc_field_path_cache; | |
271 | ||
839d52a5 | 272 | /* bt_stream_class to struct stream_class_field_path_cache. */ |
5f870343 | 273 | GHashTable *sc_field_path_caches; |
e98a2d6e PP |
274 | }; |
275 | ||
fdf0e7a0 PP |
276 | static inline |
277 | const char *state_string(enum state state) | |
278 | { | |
279 | switch (state) { | |
280 | case STATE_INIT: | |
281 | return "STATE_INIT"; | |
282 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
283 | return "STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN"; | |
284 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
285 | return "STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE"; | |
286 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
287 | return "STATE_AFTER_TRACE_PACKET_HEADER"; | |
288 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
289 | return "STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN"; | |
290 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
291 | return "STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE"; | |
292 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
293 | return "STATE_AFTER_STREAM_PACKET_CONTEXT"; | |
294 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
295 | return "STATE_EMIT_NOTIF_NEW_PACKET"; | |
6ff151ad PP |
296 | case STATE_EMIT_NOTIF_NEW_STREAM: |
297 | return "STATE_EMIT_NOTIF_NEW_STREAM"; | |
fdf0e7a0 PP |
298 | case STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN: |
299 | return "STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN"; | |
300 | case STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE: | |
301 | return "STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE"; | |
302 | case STATE_AFTER_STREAM_EVENT_HEADER: | |
303 | return "STATE_AFTER_STREAM_EVENT_HEADER"; | |
304 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN: | |
305 | return "STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN"; | |
306 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE: | |
307 | return "STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE"; | |
308 | case STATE_DSCOPE_EVENT_CONTEXT_BEGIN: | |
309 | return "STATE_DSCOPE_EVENT_CONTEXT_BEGIN"; | |
310 | case STATE_DSCOPE_EVENT_CONTEXT_CONTINUE: | |
311 | return "STATE_DSCOPE_EVENT_CONTEXT_CONTINUE"; | |
312 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: | |
313 | return "STATE_DSCOPE_EVENT_PAYLOAD_BEGIN"; | |
314 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
315 | return "STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE"; | |
316 | case STATE_EMIT_NOTIF_EVENT: | |
317 | return "STATE_EMIT_NOTIF_EVENT"; | |
318 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
319 | return "STATE_EMIT_NOTIF_END_OF_PACKET"; | |
6ff151ad PP |
320 | case STATE_DONE: |
321 | return "STATE_DONE"; | |
fdf0e7a0 PP |
322 | case STATE_SKIP_PACKET_PADDING: |
323 | return "STATE_SKIP_PACKET_PADDING"; | |
324 | default: | |
325 | return "(unknown)"; | |
326 | } | |
327 | } | |
328 | ||
2cf1d51e | 329 | static |
839d52a5 | 330 | int bt_notif_iter_switch_packet(struct bt_notif_iter *notit); |
2cf1d51e | 331 | |
5f870343 | 332 | static |
839d52a5 PP |
333 | enum bt_btr_status btr_timestamp_end_cb(void *value, |
334 | struct bt_field_type *type, void *data); | |
5f870343 | 335 | |
e98a2d6e | 336 | static |
839d52a5 | 337 | struct stack *stack_new(struct bt_notif_iter *notit) |
e98a2d6e PP |
338 | { |
339 | struct stack *stack = NULL; | |
340 | ||
341 | stack = g_new0(struct stack, 1); | |
342 | if (!stack) { | |
fdf0e7a0 | 343 | BT_LOGE_STR("Failed to allocate one stack."); |
e98a2d6e PP |
344 | goto error; |
345 | } | |
346 | ||
87bdbbb0 | 347 | stack->entries = g_array_new(FALSE, TRUE, sizeof(struct stack_entry)); |
e98a2d6e | 348 | if (!stack->entries) { |
87bdbbb0 | 349 | BT_LOGE_STR("Failed to allocate a GArray."); |
e98a2d6e PP |
350 | goto error; |
351 | } | |
352 | ||
fdf0e7a0 | 353 | BT_LOGD("Created stack: notit-addr=%p, stack-addr=%p", notit, stack); |
e98a2d6e | 354 | return stack; |
fdf0e7a0 | 355 | |
e98a2d6e PP |
356 | error: |
357 | g_free(stack); | |
e98a2d6e PP |
358 | return NULL; |
359 | } | |
360 | ||
361 | static | |
362 | void stack_destroy(struct stack *stack) | |
363 | { | |
8b45963b | 364 | BT_ASSERT(stack); |
fdf0e7a0 | 365 | BT_LOGD("Destroying stack: addr=%p", stack); |
87bdbbb0 PP |
366 | |
367 | if (stack->entries) { | |
368 | g_array_free(stack->entries, TRUE); | |
369 | } | |
370 | ||
e98a2d6e PP |
371 | g_free(stack); |
372 | } | |
373 | ||
374 | static | |
839d52a5 | 375 | int stack_push(struct stack *stack, struct bt_field *base) |
e98a2d6e | 376 | { |
e98a2d6e | 377 | struct stack_entry *entry; |
e98a2d6e | 378 | |
8b45963b PP |
379 | BT_ASSERT(stack); |
380 | BT_ASSERT(base); | |
fdf0e7a0 | 381 | BT_LOGV("Pushing base field on stack: stack-addr=%p, " |
87bdbbb0 PP |
382 | "stack-size-before=%zu, stack-size-after=%zu", |
383 | stack, stack->size, stack->size + 1); | |
384 | ||
385 | if (stack->entries->len == stack->size) { | |
386 | g_array_set_size(stack->entries, stack->size + 1); | |
e98a2d6e PP |
387 | } |
388 | ||
87bdbbb0 | 389 | entry = &g_array_index(stack->entries, struct stack_entry, stack->size); |
a6918753 | 390 | entry->base = base; |
87bdbbb0 PP |
391 | entry->index = 0; |
392 | stack->size++; | |
393 | return 0; | |
e98a2d6e PP |
394 | } |
395 | ||
396 | static inline | |
397 | unsigned int stack_size(struct stack *stack) | |
398 | { | |
8b45963b | 399 | BT_ASSERT(stack); |
87bdbbb0 | 400 | return stack->size; |
e98a2d6e PP |
401 | } |
402 | ||
403 | static | |
404 | void stack_pop(struct stack *stack) | |
405 | { | |
8b45963b PP |
406 | BT_ASSERT(stack); |
407 | BT_ASSERT(stack_size(stack)); | |
fdf0e7a0 | 408 | BT_LOGV("Popping from stack: " |
87bdbbb0 PP |
409 | "stack-addr=%p, stack-size-before=%zu, stack-size-after=%zu", |
410 | stack, stack->size, stack->size - 1); | |
411 | stack->size--; | |
e98a2d6e PP |
412 | } |
413 | ||
414 | static inline | |
415 | struct stack_entry *stack_top(struct stack *stack) | |
416 | { | |
8b45963b PP |
417 | BT_ASSERT(stack); |
418 | BT_ASSERT(stack_size(stack)); | |
87bdbbb0 PP |
419 | return &g_array_index(stack->entries, struct stack_entry, |
420 | stack->size - 1); | |
e98a2d6e PP |
421 | } |
422 | ||
423 | static inline | |
424 | bool stack_empty(struct stack *stack) | |
425 | { | |
426 | return stack_size(stack) == 0; | |
427 | } | |
428 | ||
429 | static | |
430 | void stack_clear(struct stack *stack) | |
431 | { | |
8b45963b | 432 | BT_ASSERT(stack); |
87bdbbb0 | 433 | stack->size = 0; |
e98a2d6e PP |
434 | } |
435 | ||
436 | static inline | |
839d52a5 PP |
437 | enum bt_notif_iter_status notif_iter_status_from_m_status( |
438 | enum bt_notif_iter_medium_status m_status) | |
e98a2d6e | 439 | { |
dc77b521 | 440 | return (int) m_status; |
e98a2d6e PP |
441 | } |
442 | ||
443 | static inline | |
839d52a5 | 444 | size_t buf_size_bits(struct bt_notif_iter *notit) |
e98a2d6e | 445 | { |
fdf0e7a0 | 446 | return notit->buf.sz * 8; |
e98a2d6e PP |
447 | } |
448 | ||
449 | static inline | |
839d52a5 | 450 | size_t buf_available_bits(struct bt_notif_iter *notit) |
e98a2d6e PP |
451 | { |
452 | return buf_size_bits(notit) - notit->buf.at; | |
453 | } | |
454 | ||
455 | static inline | |
839d52a5 | 456 | size_t packet_at(struct bt_notif_iter *notit) |
e98a2d6e PP |
457 | { |
458 | return notit->buf.packet_offset + notit->buf.at; | |
459 | } | |
460 | ||
e98a2d6e | 461 | static inline |
839d52a5 | 462 | void buf_consume_bits(struct bt_notif_iter *notit, size_t incr) |
e98a2d6e | 463 | { |
fdf0e7a0 PP |
464 | BT_LOGV("Advancing cursor: notit-addr=%p, cur-before=%zu, cur-after=%zu", |
465 | notit, notit->buf.at, notit->buf.at + incr); | |
e98a2d6e PP |
466 | notit->buf.at += incr; |
467 | } | |
468 | ||
e98a2d6e | 469 | static |
839d52a5 PP |
470 | enum bt_notif_iter_status request_medium_bytes( |
471 | struct bt_notif_iter *notit) | |
e98a2d6e | 472 | { |
fdf0e7a0 PP |
473 | uint8_t *buffer_addr = NULL; |
474 | size_t buffer_sz = 0; | |
839d52a5 | 475 | enum bt_notif_iter_medium_status m_status; |
e98a2d6e | 476 | |
fdf0e7a0 PP |
477 | BT_LOGV("Calling user function (request bytes): notit-addr=%p, " |
478 | "request-size=%zu", notit, notit->medium.max_request_sz); | |
e98a2d6e PP |
479 | m_status = notit->medium.medops.request_bytes( |
480 | notit->medium.max_request_sz, &buffer_addr, | |
481 | &buffer_sz, notit->medium.data); | |
fdf0e7a0 | 482 | BT_LOGV("User function returned: status=%s, buf-addr=%p, buf-size=%zu", |
839d52a5 | 483 | bt_notif_iter_medium_status_string(m_status), |
fdf0e7a0 | 484 | buffer_addr, buffer_sz); |
839d52a5 | 485 | if (m_status == BT_NOTIF_ITER_MEDIUM_STATUS_OK) { |
8b45963b | 486 | BT_ASSERT(buffer_sz != 0); |
e98a2d6e PP |
487 | |
488 | /* New packet offset is old one + old size (in bits) */ | |
489 | notit->buf.packet_offset += buf_size_bits(notit); | |
490 | ||
491 | /* Restart at the beginning of the new medium buffer */ | |
492 | notit->buf.at = 0; | |
bb8744a7 | 493 | notit->buf.last_eh_at = SIZE_MAX; |
e98a2d6e PP |
494 | |
495 | /* New medium buffer size */ | |
496 | notit->buf.sz = buffer_sz; | |
497 | ||
498 | /* New medium buffer address */ | |
499 | notit->buf.addr = buffer_addr; | |
fdf0e7a0 PP |
500 | |
501 | BT_LOGV("User function returned new bytes: " | |
502 | "packet-offset=%zu, cur=%zu, size=%zu, addr=%p", | |
503 | notit->buf.packet_offset, notit->buf.at, | |
504 | notit->buf.sz, notit->buf.addr); | |
505 | BT_LOGV_MEM(buffer_addr, buffer_sz, "Returned bytes at %p:", | |
506 | buffer_addr); | |
839d52a5 | 507 | } else if (m_status == BT_NOTIF_ITER_MEDIUM_STATUS_EOF) { |
7116f6c0 PP |
508 | /* |
509 | * User returned end of stream: validate that we're not | |
510 | * in the middle of a packet header, packet context, or | |
511 | * event. | |
512 | */ | |
42ef5ec2 PP |
513 | if (notit->cur_packet_size >= 0) { |
514 | if (packet_at(notit) == notit->cur_packet_size) { | |
515 | goto end; | |
7116f6c0 | 516 | } |
42ef5ec2 PP |
517 | } else { |
518 | if (packet_at(notit) == 0) { | |
519 | goto end; | |
7116f6c0 | 520 | } |
7116f6c0 | 521 | |
42ef5ec2 PP |
522 | if (notit->buf.last_eh_at != SIZE_MAX && |
523 | notit->buf.at == notit->buf.last_eh_at) { | |
524 | goto end; | |
7116f6c0 PP |
525 | } |
526 | } | |
527 | ||
7116f6c0 PP |
528 | /* All other states are invalid */ |
529 | BT_LOGW("User function returned %s, but notification iterator is in an unexpected state: " | |
42ef5ec2 PP |
530 | "state=%s, cur-packet-size=%" PRId64 ", cur=%zu, " |
531 | "packet-cur=%zu, last-eh-at=%zu", | |
839d52a5 | 532 | bt_notif_iter_medium_status_string(m_status), |
42ef5ec2 PP |
533 | state_string(notit->state), |
534 | notit->cur_packet_size, | |
535 | notit->buf.at, packet_at(notit), | |
536 | notit->buf.last_eh_at); | |
839d52a5 | 537 | m_status = BT_NOTIF_ITER_MEDIUM_STATUS_ERROR; |
fdf0e7a0 PP |
538 | } else if (m_status < 0) { |
539 | BT_LOGW("User function failed: status=%s", | |
839d52a5 | 540 | bt_notif_iter_medium_status_string(m_status)); |
e98a2d6e PP |
541 | } |
542 | ||
42ef5ec2 | 543 | end: |
e98a2d6e PP |
544 | return notif_iter_status_from_m_status(m_status); |
545 | } | |
546 | ||
547 | static inline | |
839d52a5 PP |
548 | enum bt_notif_iter_status buf_ensure_available_bits( |
549 | struct bt_notif_iter *notit) | |
e98a2d6e | 550 | { |
839d52a5 | 551 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e PP |
552 | |
553 | if (buf_available_bits(notit) == 0) { | |
554 | /* | |
839d52a5 | 555 | * This _cannot_ return BT_NOTIF_ITER_STATUS_OK |
e98a2d6e PP |
556 | * _and_ no bits. |
557 | */ | |
558 | status = request_medium_bytes(notit); | |
559 | } | |
560 | ||
561 | return status; | |
562 | } | |
563 | ||
564 | static | |
839d52a5 PP |
565 | enum bt_notif_iter_status read_dscope_begin_state( |
566 | struct bt_notif_iter *notit, | |
567 | struct bt_field_type *dscope_field_type, | |
e98a2d6e | 568 | enum state done_state, enum state continue_state, |
a6918753 | 569 | struct bt_field *dscope_field) |
e98a2d6e | 570 | { |
839d52a5 PP |
571 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
572 | enum bt_btr_status btr_status; | |
e98a2d6e PP |
573 | size_t consumed_bits; |
574 | ||
e98a2d6e | 575 | notit->cur_dscope_field = dscope_field; |
fdf0e7a0 PP |
576 | BT_LOGV("Starting BTR: notit-addr=%p, btr-addr=%p, ft-addr=%p", |
577 | notit, notit->btr, dscope_field_type); | |
839d52a5 | 578 | consumed_bits = bt_btr_start(notit->btr, dscope_field_type, |
e98a2d6e PP |
579 | notit->buf.addr, notit->buf.at, packet_at(notit), |
580 | notit->buf.sz, &btr_status); | |
fdf0e7a0 | 581 | BT_LOGV("BTR consumed bits: size=%zu", consumed_bits); |
e98a2d6e PP |
582 | |
583 | switch (btr_status) { | |
839d52a5 | 584 | case BT_BTR_STATUS_OK: |
e98a2d6e | 585 | /* type was read completely */ |
fdf0e7a0 | 586 | BT_LOGV_STR("Field was completely decoded."); |
e98a2d6e PP |
587 | notit->state = done_state; |
588 | break; | |
839d52a5 | 589 | case BT_BTR_STATUS_EOF: |
fdf0e7a0 | 590 | BT_LOGV_STR("BTR needs more data to decode field completely."); |
e98a2d6e PP |
591 | notit->state = continue_state; |
592 | break; | |
593 | default: | |
fdf0e7a0 PP |
594 | BT_LOGW("BTR failed to start: notit-addr=%p, btr-addr=%p, " |
595 | "status=%s", notit, notit->btr, | |
839d52a5 PP |
596 | bt_btr_status_string(btr_status)); |
597 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
e98a2d6e PP |
598 | goto end; |
599 | } | |
600 | ||
601 | /* Consume bits now since we know we're not in an error state */ | |
602 | buf_consume_bits(notit, consumed_bits); | |
603 | ||
604 | end: | |
605 | return status; | |
606 | } | |
607 | ||
608 | static | |
839d52a5 PP |
609 | enum bt_notif_iter_status read_dscope_continue_state( |
610 | struct bt_notif_iter *notit, enum state done_state) | |
e98a2d6e | 611 | { |
839d52a5 PP |
612 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
613 | enum bt_btr_status btr_status; | |
e98a2d6e PP |
614 | size_t consumed_bits; |
615 | ||
42ef5ec2 PP |
616 | BT_LOGV("Continuing BTR: notit-addr=%p, btr-addr=%p", |
617 | notit, notit->btr); | |
618 | ||
e98a2d6e | 619 | status = buf_ensure_available_bits(notit); |
839d52a5 | 620 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
fdf0e7a0 PP |
621 | if (status < 0) { |
622 | BT_LOGW("Cannot ensure that buffer has at least one byte: " | |
623 | "notif-addr=%p, status=%s", | |
839d52a5 | 624 | notit, bt_notif_iter_status_string(status)); |
fdf0e7a0 PP |
625 | } else { |
626 | BT_LOGV("Cannot ensure that buffer has at least one byte: " | |
627 | "notif-addr=%p, status=%s", | |
839d52a5 | 628 | notit, bt_notif_iter_status_string(status)); |
fdf0e7a0 PP |
629 | } |
630 | ||
e98a2d6e PP |
631 | goto end; |
632 | } | |
633 | ||
42ef5ec2 | 634 | |
839d52a5 | 635 | consumed_bits = bt_btr_continue(notit->btr, notit->buf.addr, |
fdf0e7a0 PP |
636 | notit->buf.sz, &btr_status); |
637 | BT_LOGV("BTR consumed bits: size=%zu", consumed_bits); | |
e98a2d6e PP |
638 | |
639 | switch (btr_status) { | |
839d52a5 | 640 | case BT_BTR_STATUS_OK: |
78586d8a | 641 | /* Type was read completely. */ |
fdf0e7a0 | 642 | BT_LOGV_STR("Field was completely decoded."); |
e98a2d6e PP |
643 | notit->state = done_state; |
644 | break; | |
839d52a5 | 645 | case BT_BTR_STATUS_EOF: |
78586d8a | 646 | /* Stay in this continue state. */ |
fdf0e7a0 | 647 | BT_LOGV_STR("BTR needs more data to decode field completely."); |
e98a2d6e PP |
648 | break; |
649 | default: | |
fdf0e7a0 PP |
650 | BT_LOGW("BTR failed to continue: notit-addr=%p, btr-addr=%p, " |
651 | "status=%s", notit, notit->btr, | |
839d52a5 PP |
652 | bt_btr_status_string(btr_status)); |
653 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
e98a2d6e PP |
654 | goto end; |
655 | } | |
656 | ||
78586d8a | 657 | /* Consume bits now since we know we're not in an error state. */ |
e98a2d6e | 658 | buf_consume_bits(notit, consumed_bits); |
e98a2d6e PP |
659 | end: |
660 | return status; | |
661 | } | |
662 | ||
663 | static | |
a6918753 | 664 | void release_event_dscopes(struct bt_notif_iter *notit) |
e98a2d6e | 665 | { |
a6918753 PP |
666 | notit->dscopes.stream_event_header = NULL; |
667 | ||
668 | if (notit->event_header_field) { | |
669 | bt_event_header_field_release(notit->event_header_field); | |
670 | notit->event_header_field = NULL; | |
671 | } | |
672 | ||
673 | notit->dscopes.stream_event_context = NULL; | |
674 | notit->dscopes.event_context = NULL; | |
675 | notit->dscopes.event_payload = NULL; | |
e98a2d6e PP |
676 | } |
677 | ||
678 | static | |
a6918753 | 679 | void release_all_dscopes(struct bt_notif_iter *notit) |
e98a2d6e | 680 | { |
a6918753 PP |
681 | notit->dscopes.trace_packet_header = NULL; |
682 | ||
683 | if (notit->packet_header_field) { | |
684 | bt_packet_header_field_release(notit->packet_header_field); | |
685 | notit->packet_header_field = NULL; | |
686 | } | |
687 | ||
688 | notit->dscopes.stream_packet_context = NULL; | |
689 | ||
690 | if (notit->packet_context_field) { | |
691 | bt_packet_context_field_release(notit->packet_context_field); | |
692 | notit->packet_context_field = NULL; | |
693 | } | |
694 | ||
695 | release_event_dscopes(notit); | |
e98a2d6e PP |
696 | } |
697 | ||
698 | static | |
839d52a5 PP |
699 | enum bt_notif_iter_status read_packet_header_begin_state( |
700 | struct bt_notif_iter *notit) | |
e98a2d6e | 701 | { |
839d52a5 PP |
702 | struct bt_field_type *packet_header_type = NULL; |
703 | enum bt_notif_iter_status ret = BT_NOTIF_ITER_STATUS_OK; | |
e98a2d6e | 704 | |
839d52a5 | 705 | if (bt_notif_iter_switch_packet(notit)) { |
fdf0e7a0 | 706 | BT_LOGW("Cannot switch packet: notit-addr=%p", notit); |
839d52a5 | 707 | ret = BT_NOTIF_ITER_STATUS_ERROR; |
2cf1d51e JG |
708 | goto end; |
709 | } | |
e98a2d6e | 710 | |
2cf1d51e | 711 | /* Packet header type is common to the whole trace. */ |
b8418c69 | 712 | packet_header_type = bt_trace_borrow_packet_header_field_type( |
78586d8a | 713 | notit->meta.trace); |
e98a2d6e | 714 | if (!packet_header_type) { |
835b2d10 | 715 | notit->state = STATE_AFTER_TRACE_PACKET_HEADER; |
e98a2d6e PP |
716 | goto end; |
717 | } | |
718 | ||
a6918753 PP |
719 | /* |
720 | * Create free packet header field from trace. This field is | |
721 | * going to be moved to the packet once we create it. We cannot | |
722 | * create the packet now because: | |
723 | * | |
724 | * 1. A packet is created from a stream. | |
725 | * 2. A stream is created from a stream class. | |
726 | * 3. We need the packet header field's content to know the ID | |
727 | * of the stream class to select. | |
728 | */ | |
729 | BT_ASSERT(!notit->packet_header_field); | |
730 | notit->packet_header_field = bt_trace_create_packet_header_field( | |
731 | notit->meta.trace); | |
732 | if (!notit->packet_header_field) { | |
733 | BT_LOGE_STR("Cannot create packet header field wrapper from trace."); | |
734 | ret = BT_NOTIF_ITER_STATUS_ERROR; | |
735 | goto end; | |
736 | } | |
737 | ||
738 | notit->dscopes.trace_packet_header = | |
739 | bt_packet_header_field_borrow_field(notit->packet_header_field); | |
740 | BT_ASSERT(notit->dscopes.trace_packet_header); | |
fdf0e7a0 PP |
741 | BT_LOGV("Decoding packet header field:" |
742 | "notit-addr=%p, trace-addr=%p, trace-name=\"%s\", ft-addr=%p", | |
743 | notit, notit->meta.trace, | |
839d52a5 | 744 | bt_trace_get_name(notit->meta.trace), packet_header_type); |
2cf1d51e | 745 | ret = read_dscope_begin_state(notit, packet_header_type, |
fdf0e7a0 PP |
746 | STATE_AFTER_TRACE_PACKET_HEADER, |
747 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
a6918753 | 748 | notit->dscopes.trace_packet_header); |
fdf0e7a0 PP |
749 | if (ret < 0) { |
750 | BT_LOGW("Cannot decode packet header field: " | |
751 | "notit-addr=%p, trace-addr=%p, " | |
752 | "trace-name=\"%s\", ft-addr=%p", | |
753 | notit, notit->meta.trace, | |
839d52a5 | 754 | bt_trace_get_name(notit->meta.trace), |
fdf0e7a0 PP |
755 | packet_header_type); |
756 | } | |
b8418c69 | 757 | |
e98a2d6e | 758 | end: |
2cf1d51e | 759 | return ret; |
e98a2d6e PP |
760 | } |
761 | ||
762 | static | |
839d52a5 PP |
763 | enum bt_notif_iter_status read_packet_header_continue_state( |
764 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
765 | { |
766 | return read_dscope_continue_state(notit, | |
78586d8a | 767 | STATE_AFTER_TRACE_PACKET_HEADER); |
e98a2d6e PP |
768 | } |
769 | ||
5f870343 JG |
770 | static |
771 | struct stream_class_field_path_cache * | |
772 | create_stream_class_field_path_cache_entry( | |
839d52a5 PP |
773 | struct bt_notif_iter *notit, |
774 | struct bt_stream_class *stream_class) | |
5f870343 JG |
775 | { |
776 | int v = -1; | |
777 | int id = -1; | |
778 | int timestamp_end = -1; | |
779 | int packet_size = -1; | |
780 | int content_size = -1; | |
781 | struct stream_class_field_path_cache *cache_entry = g_new0( | |
782 | struct stream_class_field_path_cache, 1); | |
839d52a5 | 783 | struct bt_field_type *event_header = NULL, *packet_context = NULL; |
5f870343 JG |
784 | |
785 | if (!cache_entry) { | |
fdf0e7a0 | 786 | BT_LOGE_STR("Failed to allocate one stream class field path cache."); |
5f870343 JG |
787 | goto end; |
788 | } | |
789 | ||
b8418c69 PP |
790 | event_header = bt_stream_class_borrow_event_header_field_type( |
791 | stream_class); | |
839d52a5 | 792 | if (event_header && bt_field_type_is_structure(event_header)) { |
5f870343 JG |
793 | int i, count; |
794 | ||
839d52a5 | 795 | count = bt_field_type_structure_get_field_count( |
fdf0e7a0 | 796 | event_header); |
8b45963b | 797 | BT_ASSERT(count >= 0); |
fdf0e7a0 | 798 | |
5f870343 JG |
799 | for (i = 0; i < count; i++) { |
800 | int ret; | |
801 | const char *name; | |
802 | ||
b8418c69 | 803 | ret = bt_field_type_structure_borrow_field_by_index( |
5f870343 JG |
804 | event_header, &name, NULL, i); |
805 | if (ret) { | |
fdf0e7a0 PP |
806 | BT_LOGE("Cannot get event header structure field type's field: " |
807 | "notit-addr=%p, stream-class-addr=%p, " | |
808 | "stream-class-name=\"%s\", " | |
809 | "stream-class-id=%" PRId64 ", " | |
810 | "ft-addr=%p, index=%d", | |
811 | notit, stream_class, | |
839d52a5 PP |
812 | bt_stream_class_get_name(stream_class), |
813 | bt_stream_class_get_id(stream_class), | |
fdf0e7a0 | 814 | event_header, i); |
5f870343 JG |
815 | goto error; |
816 | } | |
817 | ||
818 | if (v != -1 && id != -1) { | |
819 | break; | |
820 | } | |
fdf0e7a0 PP |
821 | |
822 | if (v == -1 && strcmp(name, "v") == 0) { | |
5f870343 JG |
823 | v = i; |
824 | } else if (id == -1 && !strcmp(name, "id")) { | |
825 | id = i; | |
826 | } | |
827 | } | |
828 | } | |
829 | ||
b8418c69 | 830 | packet_context = bt_stream_class_borrow_packet_context_field_type( |
5f870343 | 831 | stream_class); |
839d52a5 | 832 | if (packet_context && bt_field_type_is_structure(packet_context)) { |
5f870343 JG |
833 | int i, count; |
834 | ||
839d52a5 | 835 | count = bt_field_type_structure_get_field_count( |
fdf0e7a0 | 836 | packet_context); |
8b45963b | 837 | BT_ASSERT(count >= 0); |
fdf0e7a0 | 838 | |
5f870343 JG |
839 | for (i = 0; i < count; i++) { |
840 | int ret; | |
841 | const char *name; | |
839d52a5 | 842 | struct bt_field_type *field_type; |
5f870343 JG |
843 | |
844 | if (timestamp_end != -1 && packet_size != -1 && | |
845 | content_size != -1) { | |
846 | break; | |
847 | } | |
848 | ||
b8418c69 | 849 | ret = bt_field_type_structure_borrow_field_by_index( |
5f870343 JG |
850 | packet_context, &name, &field_type, i); |
851 | if (ret) { | |
fdf0e7a0 PP |
852 | BT_LOGE("Cannot get packet context structure field type's field: " |
853 | "notit-addr=%p, stream-class-addr=%p, " | |
854 | "stream-class-name=\"%s\", " | |
855 | "stream-class-id=%" PRId64 ", " | |
856 | "ft-addr=%p, index=%d", | |
857 | notit, stream_class, | |
839d52a5 PP |
858 | bt_stream_class_get_name(stream_class), |
859 | bt_stream_class_get_id(stream_class), | |
fdf0e7a0 | 860 | event_header, i); |
5f870343 JG |
861 | goto error; |
862 | } | |
863 | ||
864 | if (timestamp_end == -1 && | |
fdf0e7a0 | 865 | strcmp(name, "timestamp_end") == 0) { |
5f870343 JG |
866 | struct field_cb_override *override = g_new0( |
867 | struct field_cb_override, 1); | |
868 | ||
869 | if (!override) { | |
5f870343 JG |
870 | goto error; |
871 | } | |
872 | ||
873 | override->func = btr_timestamp_end_cb; | |
874 | override->data = notit; | |
5f870343 | 875 | g_hash_table_insert(notit->field_overrides, |
b8418c69 | 876 | field_type, override); |
5f870343 JG |
877 | timestamp_end = i; |
878 | } else if (packet_size == -1 && | |
879 | !strcmp(name, "packet_size")) { | |
880 | packet_size = i; | |
881 | } else if (content_size == -1 && | |
882 | !strcmp(name, "content_size")) { | |
883 | content_size = i; | |
884 | } | |
5f870343 JG |
885 | } |
886 | } | |
887 | ||
888 | cache_entry->v = v; | |
889 | cache_entry->id = id; | |
890 | cache_entry->timestamp_end = timestamp_end; | |
891 | cache_entry->packet_size = packet_size; | |
892 | cache_entry->content_size = content_size; | |
b8418c69 | 893 | |
5f870343 | 894 | end: |
5f870343 | 895 | return cache_entry; |
b8418c69 | 896 | |
5f870343 JG |
897 | error: |
898 | g_free(cache_entry); | |
899 | cache_entry = NULL; | |
900 | goto end; | |
901 | } | |
902 | ||
903 | static | |
904 | struct stream_class_field_path_cache *get_stream_class_field_path_cache( | |
839d52a5 PP |
905 | struct bt_notif_iter *notit, |
906 | struct bt_stream_class *stream_class) | |
5f870343 JG |
907 | { |
908 | bool cache_entry_found; | |
909 | struct stream_class_field_path_cache *cache_entry; | |
910 | ||
911 | cache_entry_found = g_hash_table_lookup_extended( | |
912 | notit->sc_field_path_caches, | |
913 | stream_class, NULL, (gpointer) &cache_entry); | |
914 | if (unlikely(!cache_entry_found)) { | |
915 | cache_entry = create_stream_class_field_path_cache_entry(notit, | |
fdf0e7a0 | 916 | stream_class); |
5f870343 | 917 | g_hash_table_insert(notit->sc_field_path_caches, |
b8418c69 | 918 | stream_class, (gpointer) cache_entry); |
5f870343 JG |
919 | } |
920 | ||
921 | return cache_entry; | |
922 | } | |
923 | ||
e98a2d6e | 924 | static inline |
839d52a5 PP |
925 | enum bt_notif_iter_status set_current_stream_class( |
926 | struct bt_notif_iter *notit) | |
e98a2d6e | 927 | { |
839d52a5 PP |
928 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
929 | struct bt_field_type *packet_header_type = NULL; | |
930 | struct bt_field_type *stream_id_field_type = NULL; | |
931 | struct bt_stream_class *new_stream_class = NULL; | |
e98a2d6e PP |
932 | uint64_t stream_id; |
933 | ||
5f870343 JG |
934 | /* Clear the current stream class field path cache. */ |
935 | notit->cur_sc_field_path_cache = NULL; | |
936 | ||
e98a2d6e | 937 | /* Is there any "stream_id" field in the packet header? */ |
b8418c69 | 938 | packet_header_type = bt_trace_borrow_packet_header_field_type( |
fdf0e7a0 | 939 | notit->meta.trace); |
e98a2d6e | 940 | if (!packet_header_type) { |
fdf0e7a0 PP |
941 | /* |
942 | * No packet header, therefore no `stream_id` field, | |
943 | * therefore only one stream class. | |
944 | */ | |
945 | goto single_stream_class; | |
e98a2d6e PP |
946 | } |
947 | ||
a6918753 | 948 | BT_ASSERT(bt_field_type_is_structure(packet_header_type)); |
e98a2d6e PP |
949 | |
950 | // TODO: optimalize! | |
951 | stream_id_field_type = | |
b8418c69 | 952 | bt_field_type_structure_borrow_field_type_by_name( |
fdf0e7a0 | 953 | packet_header_type, "stream_id"); |
e98a2d6e PP |
954 | if (stream_id_field_type) { |
955 | /* Find appropriate stream class using current stream ID */ | |
e98a2d6e | 956 | int ret; |
839d52a5 | 957 | struct bt_field *stream_id_field = NULL; |
e98a2d6e | 958 | |
8b45963b | 959 | BT_ASSERT(notit->dscopes.trace_packet_header); |
e98a2d6e PP |
960 | |
961 | // TODO: optimalize! | |
a6918753 | 962 | stream_id_field = bt_field_structure_borrow_field_by_name( |
78586d8a | 963 | notit->dscopes.trace_packet_header, "stream_id"); |
8b45963b | 964 | BT_ASSERT(stream_id_field); |
8deee039 | 965 | ret = bt_field_integer_unsigned_get_value( |
78586d8a | 966 | stream_id_field, &stream_id); |
8b45963b | 967 | BT_ASSERT(!ret); |
e98a2d6e | 968 | } else { |
fdf0e7a0 | 969 | single_stream_class: |
e98a2d6e | 970 | /* Only one stream: pick the first stream class */ |
8b45963b | 971 | BT_ASSERT(bt_trace_get_stream_class_count( |
78586d8a | 972 | notit->meta.trace) == 1); |
e98a2d6e PP |
973 | stream_id = 0; |
974 | } | |
975 | ||
fdf0e7a0 PP |
976 | BT_LOGV("Found stream class ID to use: notit-addr=%p, " |
977 | "stream-class-id=%" PRIu64 ", " | |
978 | "trace-addr=%p, trace-name=\"%s\"", | |
979 | notit, stream_id, notit->meta.trace, | |
839d52a5 | 980 | bt_trace_get_name(notit->meta.trace)); |
fdf0e7a0 | 981 | |
b8418c69 | 982 | new_stream_class = bt_trace_borrow_stream_class_by_id( |
fdf0e7a0 | 983 | notit->meta.trace, stream_id); |
c937c615 | 984 | if (!new_stream_class) { |
fdf0e7a0 PP |
985 | BT_LOGW("No stream class with ID of stream class ID to use in trace: " |
986 | "notit-addr=%p, stream-class-id=%" PRIu64 ", " | |
987 | "trace-addr=%p, trace-name=\"%s\"", | |
988 | notit, stream_id, notit->meta.trace, | |
839d52a5 PP |
989 | bt_trace_get_name(notit->meta.trace)); |
990 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
e98a2d6e PP |
991 | goto end; |
992 | } | |
993 | ||
c937c615 PP |
994 | if (notit->meta.stream_class) { |
995 | if (new_stream_class != notit->meta.stream_class) { | |
996 | BT_LOGW("Two packets refer to two different stream classes within the same packet sequence: " | |
997 | "notit-addr=%p, prev-stream-class-addr=%p, " | |
998 | "prev-stream-class-name=\"%s\", " | |
999 | "prev-stream-class-id=%" PRId64 ", " | |
1000 | "next-stream-class-addr=%p, " | |
1001 | "next-stream-class-name=\"%s\", " | |
1002 | "next-stream-class-id=%" PRId64 ", " | |
1003 | "trace-addr=%p, trace-name=\"%s\"", | |
1004 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1005 | bt_stream_class_get_name(notit->meta.stream_class), |
1006 | bt_stream_class_get_id(notit->meta.stream_class), | |
c937c615 | 1007 | new_stream_class, |
839d52a5 PP |
1008 | bt_stream_class_get_name(new_stream_class), |
1009 | bt_stream_class_get_id(new_stream_class), | |
c937c615 | 1010 | notit->meta.trace, |
839d52a5 PP |
1011 | bt_trace_get_name(notit->meta.trace)); |
1012 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
c937c615 PP |
1013 | goto end; |
1014 | } | |
1015 | } else { | |
b8418c69 | 1016 | notit->meta.stream_class = new_stream_class; |
c937c615 PP |
1017 | } |
1018 | ||
fdf0e7a0 PP |
1019 | BT_LOGV("Set current stream class: " |
1020 | "notit-addr=%p, stream-class-addr=%p, " | |
1021 | "stream-class-name=\"%s\", stream-class-id=%" PRId64, | |
1022 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1023 | bt_stream_class_get_name(notit->meta.stream_class), |
1024 | bt_stream_class_get_id(notit->meta.stream_class)); | |
fdf0e7a0 | 1025 | |
5f870343 JG |
1026 | /* |
1027 | * Retrieve (or lazily create) the current stream class field path | |
1028 | * cache. | |
1029 | */ | |
1030 | notit->cur_sc_field_path_cache = get_stream_class_field_path_cache( | |
fdf0e7a0 | 1031 | notit, notit->meta.stream_class); |
5f870343 | 1032 | if (!notit->cur_sc_field_path_cache) { |
fdf0e7a0 PP |
1033 | BT_LOGW("Cannot retrieve stream class field path from cache: " |
1034 | "notit-addr=%p, stream-class-addr=%p, " | |
1035 | "stream-class-name=\"%s\", stream-class-id=%" PRId64, | |
1036 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1037 | bt_stream_class_get_name(notit->meta.stream_class), |
1038 | bt_stream_class_get_id(notit->meta.stream_class)); | |
1039 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
5f870343 JG |
1040 | goto end; |
1041 | } | |
b8418c69 | 1042 | |
e98a2d6e | 1043 | end: |
e98a2d6e PP |
1044 | return status; |
1045 | } | |
1046 | ||
a6918753 PP |
1047 | static inline |
1048 | uint64_t get_cur_stream_instance_id(struct bt_notif_iter *notit) | |
1049 | { | |
1050 | struct bt_field *stream_instance_id_field = NULL; | |
1051 | uint64_t stream_instance_id = -1ULL; | |
1052 | int ret; | |
1053 | ||
1054 | if (!notit->dscopes.trace_packet_header) { | |
1055 | goto end; | |
1056 | } | |
1057 | ||
1058 | stream_instance_id_field = bt_field_structure_borrow_field_by_name( | |
1059 | notit->dscopes.trace_packet_header, "stream_instance_id"); | |
1060 | if (!stream_instance_id_field) { | |
1061 | goto end; | |
1062 | } | |
1063 | ||
1064 | ret = bt_field_integer_unsigned_get_value(stream_instance_id_field, | |
1065 | &stream_instance_id); | |
1066 | if (ret) { | |
1067 | stream_instance_id = -1ULL; | |
1068 | goto end; | |
1069 | } | |
1070 | ||
1071 | end: | |
1072 | return stream_instance_id; | |
1073 | } | |
1074 | ||
1075 | static inline | |
1076 | enum bt_notif_iter_status set_current_stream(struct bt_notif_iter *notit) | |
1077 | { | |
1078 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
1079 | struct bt_stream *stream = NULL; | |
1080 | ||
1081 | BT_LOGV("Calling user function (get stream): notit-addr=%p, " | |
1082 | "stream-class-addr=%p, stream-class-name=\"%s\", " | |
1083 | "stream-class-id=%" PRId64, | |
1084 | notit, notit->meta.stream_class, | |
1085 | bt_stream_class_get_name(notit->meta.stream_class), | |
1086 | bt_stream_class_get_id(notit->meta.stream_class)); | |
1087 | stream = bt_get(notit->medium.medops.borrow_stream( | |
1088 | notit->meta.stream_class, get_cur_stream_instance_id(notit), | |
1089 | notit->medium.data)); | |
1090 | BT_LOGV("User function returned: stream-addr=%p", stream); | |
1091 | if (!stream) { | |
1092 | BT_LOGW_STR("User function failed to return a stream object for the given stream class."); | |
1093 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1094 | goto end; | |
1095 | } | |
1096 | ||
1097 | if (notit->stream && stream != notit->stream) { | |
1098 | BT_LOGW("User function returned a different stream than the previous one for the same sequence of packets."); | |
1099 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1100 | goto end; | |
1101 | } | |
1102 | ||
1103 | BT_MOVE(notit->stream, stream); | |
1104 | ||
1105 | end: | |
1106 | bt_put(stream); | |
1107 | return status; | |
1108 | } | |
1109 | ||
1110 | static inline | |
1111 | enum bt_notif_iter_status set_current_packet(struct bt_notif_iter *notit) | |
1112 | { | |
1113 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
1114 | struct bt_packet *packet = NULL; | |
1115 | ||
1116 | BT_LOGV("Creating packet for packet notification: " | |
1117 | "notit-addr=%p", notit); | |
1118 | BT_LOGV("Creating packet from stream: " | |
1119 | "notit-addr=%p, stream-addr=%p, " | |
1120 | "stream-class-addr=%p, " | |
1121 | "stream-class-name=\"%s\", " | |
1122 | "stream-class-id=%" PRId64, | |
1123 | notit, notit->stream, notit->meta.stream_class, | |
1124 | bt_stream_class_get_name(notit->meta.stream_class), | |
1125 | bt_stream_class_get_id(notit->meta.stream_class)); | |
1126 | ||
1127 | /* Create packet */ | |
1128 | BT_ASSERT(notit->stream); | |
1129 | packet = bt_packet_create(notit->stream); | |
1130 | if (!packet) { | |
1131 | BT_LOGE("Cannot create packet from stream: " | |
1132 | "notit-addr=%p, stream-addr=%p, " | |
1133 | "stream-class-addr=%p, " | |
1134 | "stream-class-name=\"%s\", " | |
1135 | "stream-class-id=%" PRId64, | |
1136 | notit, notit->stream, notit->meta.stream_class, | |
1137 | bt_stream_class_get_name(notit->meta.stream_class), | |
1138 | bt_stream_class_get_id(notit->meta.stream_class)); | |
1139 | goto error; | |
1140 | } | |
1141 | ||
1142 | goto end; | |
1143 | ||
1144 | error: | |
1145 | BT_PUT(packet); | |
1146 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1147 | ||
1148 | end: | |
1149 | BT_MOVE(notit->packet, packet); | |
1150 | return status; | |
1151 | } | |
1152 | ||
e98a2d6e | 1153 | static |
839d52a5 PP |
1154 | enum bt_notif_iter_status after_packet_header_state( |
1155 | struct bt_notif_iter *notit) | |
e98a2d6e | 1156 | { |
839d52a5 | 1157 | enum bt_notif_iter_status status; |
e98a2d6e PP |
1158 | |
1159 | status = set_current_stream_class(notit); | |
a6918753 PP |
1160 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
1161 | goto end; | |
e98a2d6e PP |
1162 | } |
1163 | ||
a6918753 PP |
1164 | notit->state = STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN; |
1165 | ||
1166 | end: | |
e98a2d6e PP |
1167 | return status; |
1168 | } | |
1169 | ||
1170 | static | |
839d52a5 PP |
1171 | enum bt_notif_iter_status read_packet_context_begin_state( |
1172 | struct bt_notif_iter *notit) | |
e98a2d6e | 1173 | { |
839d52a5 PP |
1174 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1175 | struct bt_field_type *packet_context_type; | |
e98a2d6e | 1176 | |
8b45963b | 1177 | BT_ASSERT(notit->meta.stream_class); |
b8418c69 | 1178 | packet_context_type = bt_stream_class_borrow_packet_context_field_type( |
fdf0e7a0 | 1179 | notit->meta.stream_class); |
e98a2d6e | 1180 | if (!packet_context_type) { |
fdf0e7a0 PP |
1181 | BT_LOGV("No packet packet context field type in stream class: continuing: " |
1182 | "notit-addr=%p, stream-class-addr=%p, " | |
1183 | "stream-class-name=\"%s\", stream-class-id=%" PRId64, | |
1184 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1185 | bt_stream_class_get_name(notit->meta.stream_class), |
1186 | bt_stream_class_get_id(notit->meta.stream_class)); | |
835b2d10 | 1187 | notit->state = STATE_AFTER_STREAM_PACKET_CONTEXT; |
e98a2d6e PP |
1188 | goto end; |
1189 | } | |
1190 | ||
a6918753 PP |
1191 | /* |
1192 | * Create free packet context field from stream class. This | |
1193 | * field is going to be moved to the packet once we create it. | |
1194 | * We cannot create the packet now because a packet is created | |
1195 | * from a stream, and this API must be able to return the packet | |
1196 | * header and context fields without creating a stream | |
1197 | * (bt_notif_iter_get_packet_header_context_fields()). | |
1198 | */ | |
1199 | BT_ASSERT(!notit->packet_context_field); | |
1200 | notit->packet_context_field = | |
1201 | bt_stream_class_create_packet_context_field( | |
1202 | notit->meta.stream_class); | |
1203 | if (!notit->packet_context_field) { | |
1204 | BT_LOGE_STR("Cannot create packet context field wrapper from stream class."); | |
1205 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1206 | goto end; | |
1207 | } | |
1208 | ||
1209 | notit->dscopes.stream_packet_context = | |
1210 | bt_packet_context_field_borrow_field(notit->packet_context_field); | |
1211 | BT_ASSERT(notit->dscopes.stream_packet_context); | |
fdf0e7a0 PP |
1212 | BT_LOGV("Decoding packet context field: " |
1213 | "notit-addr=%p, stream-class-addr=%p, " | |
1214 | "stream-class-name=\"%s\", stream-class-id=%" PRId64 ", " | |
1215 | "ft-addr=%p", | |
1216 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1217 | bt_stream_class_get_name(notit->meta.stream_class), |
1218 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1219 | packet_context_type); |
e98a2d6e | 1220 | status = read_dscope_begin_state(notit, packet_context_type, |
fdf0e7a0 PP |
1221 | STATE_AFTER_STREAM_PACKET_CONTEXT, |
1222 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
a6918753 | 1223 | notit->dscopes.stream_packet_context); |
fdf0e7a0 PP |
1224 | if (status < 0) { |
1225 | BT_LOGW("Cannot decode packet context field: " | |
1226 | "notit-addr=%p, stream-class-addr=%p, " | |
1227 | "stream-class-name=\"%s\", " | |
1228 | "stream-class-id=%" PRId64 ", ft-addr=%p", | |
1229 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1230 | bt_stream_class_get_name(notit->meta.stream_class), |
1231 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 PP |
1232 | packet_context_type); |
1233 | } | |
e98a2d6e PP |
1234 | |
1235 | end: | |
e98a2d6e PP |
1236 | return status; |
1237 | } | |
1238 | ||
1239 | static | |
839d52a5 PP |
1240 | enum bt_notif_iter_status read_packet_context_continue_state( |
1241 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1242 | { |
1243 | return read_dscope_continue_state(notit, | |
78586d8a | 1244 | STATE_AFTER_STREAM_PACKET_CONTEXT); |
e98a2d6e PP |
1245 | } |
1246 | ||
78586d8a | 1247 | static |
839d52a5 PP |
1248 | enum bt_notif_iter_status set_current_packet_content_sizes( |
1249 | struct bt_notif_iter *notit) | |
e98a2d6e | 1250 | { |
839d52a5 PP |
1251 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1252 | struct bt_field *packet_size_field = NULL; | |
1253 | struct bt_field *content_size_field = NULL; | |
a27839b0 | 1254 | uint64_t content_size = -1ULL, packet_size = -1ULL; |
e98a2d6e | 1255 | |
89b08333 MD |
1256 | if (!notit->dscopes.stream_packet_context) { |
1257 | goto end; | |
1258 | } | |
e98a2d6e | 1259 | |
a6918753 | 1260 | packet_size_field = bt_field_structure_borrow_field_by_name( |
fdf0e7a0 | 1261 | notit->dscopes.stream_packet_context, "packet_size"); |
a6918753 | 1262 | content_size_field = bt_field_structure_borrow_field_by_name( |
fdf0e7a0 | 1263 | notit->dscopes.stream_packet_context, "content_size"); |
e98a2d6e | 1264 | if (packet_size_field) { |
8deee039 | 1265 | int ret = bt_field_integer_unsigned_get_value( |
fdf0e7a0 | 1266 | packet_size_field, &packet_size); |
e98a2d6e | 1267 | |
8b45963b | 1268 | BT_ASSERT(ret == 0); |
e98a2d6e | 1269 | if (packet_size == 0) { |
fdf0e7a0 PP |
1270 | BT_LOGW("Invalid packet size: packet context field indicates packet size is zero: " |
1271 | "notit-addr=%p, packet-context-field-addr=%p", | |
1272 | notit, notit->dscopes.stream_packet_context); | |
839d52a5 | 1273 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1274 | goto end; |
1275 | } else if ((packet_size % 8) != 0) { | |
fdf0e7a0 PP |
1276 | BT_LOGW("Invalid packet size: packet context field indicates packet size is not a multiple of 8: " |
1277 | "notit-addr=%p, packet-context-field-addr=%p, " | |
1278 | "packet-size=%" PRIu64, | |
1279 | notit, notit->dscopes.stream_packet_context, | |
1280 | packet_size); | |
839d52a5 | 1281 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1282 | goto end; |
1283 | } | |
1284 | } | |
78586d8a | 1285 | |
e98a2d6e | 1286 | if (content_size_field) { |
8deee039 | 1287 | int ret = bt_field_integer_unsigned_get_value( |
e98a2d6e | 1288 | content_size_field, &content_size); |
78586d8a | 1289 | |
8b45963b | 1290 | BT_ASSERT(ret == 0); |
e98a2d6e PP |
1291 | } else { |
1292 | content_size = packet_size; | |
1293 | } | |
1294 | ||
fdf0e7a0 PP |
1295 | if (content_size > packet_size) { |
1296 | BT_LOGW("Invalid packet or content size: packet context field indicates content size is greater than packet size: " | |
1297 | "notit-addr=%p, packet-context-field-addr=%p, " | |
1298 | "packet-size=%" PRIu64 ", content-size=%" PRIu64, | |
1299 | notit, notit->dscopes.stream_packet_context, | |
1300 | packet_size, content_size); | |
839d52a5 | 1301 | status = BT_NOTIF_ITER_STATUS_ERROR; |
fdf0e7a0 PP |
1302 | goto end; |
1303 | } | |
1304 | ||
a27839b0 MD |
1305 | if (packet_size != -1ULL) { |
1306 | notit->cur_packet_size = packet_size; | |
1307 | } else { | |
1308 | /* | |
1309 | * Use the content size as packet size indicator if the | |
1310 | * packet size field is missing. This means there is no | |
1311 | * padding in this stream. | |
1312 | */ | |
1313 | notit->cur_packet_size = content_size; | |
1314 | } | |
e98a2d6e | 1315 | notit->cur_content_size = content_size; |
fdf0e7a0 PP |
1316 | BT_LOGV("Set current packet and content sizes: " |
1317 | "notit-addr=%p, packet-size=%" PRIu64 ", content-size=%" PRIu64, | |
1318 | notit, packet_size, content_size); | |
e98a2d6e | 1319 | end: |
e98a2d6e PP |
1320 | return status; |
1321 | } | |
1322 | ||
1323 | static | |
839d52a5 PP |
1324 | enum bt_notif_iter_status after_packet_context_state( |
1325 | struct bt_notif_iter *notit) | |
e98a2d6e | 1326 | { |
839d52a5 | 1327 | enum bt_notif_iter_status status; |
e98a2d6e PP |
1328 | |
1329 | status = set_current_packet_content_sizes(notit); | |
839d52a5 | 1330 | if (status == BT_NOTIF_ITER_STATUS_OK) { |
6ff151ad PP |
1331 | if (notit->stream_begin_emitted) { |
1332 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
1333 | } else { | |
1334 | notit->state = STATE_EMIT_NOTIF_NEW_STREAM; | |
1335 | } | |
e98a2d6e PP |
1336 | } |
1337 | ||
1338 | return status; | |
1339 | } | |
1340 | ||
1341 | static | |
839d52a5 PP |
1342 | enum bt_notif_iter_status read_event_header_begin_state( |
1343 | struct bt_notif_iter *notit) | |
e98a2d6e | 1344 | { |
839d52a5 PP |
1345 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1346 | struct bt_field_type *event_header_type = NULL; | |
e98a2d6e | 1347 | |
9b876b7b PP |
1348 | /* Reset the position of the last event header */ |
1349 | notit->buf.last_eh_at = notit->buf.at; | |
1350 | ||
e98a2d6e PP |
1351 | /* Check if we have some content left */ |
1352 | if (notit->cur_content_size >= 0) { | |
1353 | if (packet_at(notit) == notit->cur_content_size) { | |
1354 | /* No more events! */ | |
fdf0e7a0 PP |
1355 | BT_LOGV("Reached end of packet: notit-addr=%p, " |
1356 | "cur=%zu", notit, packet_at(notit)); | |
e98a2d6e PP |
1357 | notit->state = STATE_EMIT_NOTIF_END_OF_PACKET; |
1358 | goto end; | |
1359 | } else if (packet_at(notit) > notit->cur_content_size) { | |
1360 | /* That's not supposed to happen */ | |
fdf0e7a0 | 1361 | BT_LOGV("Before decoding event header field: cursor is passed the packet's content: " |
41342c71 | 1362 | "notit-addr=%p, content-size=%" PRId64 ", " |
fdf0e7a0 PP |
1363 | "cur=%zu", notit, notit->cur_content_size, |
1364 | packet_at(notit)); | |
839d52a5 | 1365 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1366 | goto end; |
1367 | } | |
1368 | } | |
1369 | ||
a6918753 PP |
1370 | release_event_dscopes(notit); |
1371 | BT_ASSERT(notit->meta.stream_class); | |
b8418c69 | 1372 | event_header_type = bt_stream_class_borrow_event_header_field_type( |
e98a2d6e PP |
1373 | notit->meta.stream_class); |
1374 | if (!event_header_type) { | |
835b2d10 | 1375 | notit->state = STATE_AFTER_STREAM_EVENT_HEADER; |
e98a2d6e PP |
1376 | goto end; |
1377 | } | |
1378 | ||
a6918753 PP |
1379 | BT_ASSERT(!notit->event_header_field); |
1380 | notit->event_header_field = bt_stream_class_create_event_header_field( | |
1381 | notit->meta.stream_class); | |
1382 | if (!notit->event_header_field) { | |
1383 | BT_LOGE_STR("Cannot create event header field wrapper from trace."); | |
1384 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1385 | goto end; | |
1386 | } | |
1387 | ||
1388 | notit->dscopes.stream_event_header = | |
1389 | bt_event_header_field_borrow_field(notit->event_header_field); | |
1390 | BT_ASSERT(notit->dscopes.stream_event_header); | |
fdf0e7a0 PP |
1391 | BT_LOGV("Decoding event header field: " |
1392 | "notit-addr=%p, stream-class-addr=%p, " | |
1393 | "stream-class-name=\"%s\", stream-class-id=%" PRId64 ", " | |
1394 | "ft-addr=%p", | |
1395 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1396 | bt_stream_class_get_name(notit->meta.stream_class), |
1397 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1398 | event_header_type); |
e98a2d6e PP |
1399 | status = read_dscope_begin_state(notit, event_header_type, |
1400 | STATE_AFTER_STREAM_EVENT_HEADER, | |
1401 | STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE, | |
a6918753 | 1402 | notit->dscopes.stream_event_header); |
fdf0e7a0 PP |
1403 | if (status < 0) { |
1404 | BT_LOGW("Cannot decode event header field: " | |
1405 | "notit-addr=%p, stream-class-addr=%p, " | |
1406 | "stream-class-name=\"%s\", " | |
1407 | "stream-class-id=%" PRId64 ", ft-addr=%p", | |
1408 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1409 | bt_stream_class_get_name(notit->meta.stream_class), |
1410 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 PP |
1411 | event_header_type); |
1412 | } | |
e98a2d6e | 1413 | |
b8418c69 | 1414 | end: |
e98a2d6e PP |
1415 | return status; |
1416 | } | |
1417 | ||
1418 | static | |
839d52a5 PP |
1419 | enum bt_notif_iter_status read_event_header_continue_state( |
1420 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1421 | { |
1422 | return read_dscope_continue_state(notit, | |
1423 | STATE_AFTER_STREAM_EVENT_HEADER); | |
1424 | } | |
1425 | ||
1426 | static inline | |
839d52a5 | 1427 | enum bt_notif_iter_status set_current_event_class(struct bt_notif_iter *notit) |
e98a2d6e PP |
1428 | { |
1429 | /* | |
1430 | * The assert() calls in this function are okay because it is | |
1431 | * assumed here that all the metadata objects have been | |
1432 | * validated for CTF correctness before decoding actual streams. | |
1433 | */ | |
1434 | ||
839d52a5 PP |
1435 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1436 | struct bt_field_type *event_header_type; | |
1437 | struct bt_field_type *id_field_type = NULL; | |
1438 | struct bt_field_type *v_field_type = NULL; | |
e98a2d6e PP |
1439 | uint64_t event_id = -1ULL; |
1440 | int ret; | |
1441 | ||
b8418c69 | 1442 | event_header_type = bt_stream_class_borrow_event_header_field_type( |
e98a2d6e PP |
1443 | notit->meta.stream_class); |
1444 | if (!event_header_type) { | |
fdf0e7a0 PP |
1445 | /* |
1446 | * No event header, therefore no event class ID field, | |
1447 | * therefore only one event class. | |
1448 | */ | |
1449 | goto single_event_class; | |
e98a2d6e PP |
1450 | } |
1451 | ||
1452 | /* Is there any "id"/"v" field in the event header? */ | |
a6918753 | 1453 | BT_ASSERT(bt_field_type_is_structure(event_header_type)); |
b8418c69 | 1454 | id_field_type = bt_field_type_structure_borrow_field_type_by_name( |
e98a2d6e | 1455 | event_header_type, "id"); |
b8418c69 | 1456 | v_field_type = bt_field_type_structure_borrow_field_type_by_name( |
e98a2d6e | 1457 | event_header_type, "v"); |
8b45963b | 1458 | BT_ASSERT(notit->dscopes.stream_event_header); |
e98a2d6e PP |
1459 | if (v_field_type) { |
1460 | /* | |
1461 | * _ _____ _____ | |
1462 | * | | |_ _|_ _| __ __ _ | |
1463 | * | | | | | || '_ \ / _` | | |
1464 | * | |___| | | || | | | (_| | S P E C I A L | |
1465 | * |_____|_| |_||_| |_|\__, | C A S E ™ | |
1466 | * |___/ | |
1467 | */ | |
839d52a5 PP |
1468 | struct bt_field *v_field = NULL; |
1469 | struct bt_field *v_struct_field = NULL; | |
1470 | struct bt_field *v_struct_id_field = NULL; | |
e98a2d6e PP |
1471 | |
1472 | // TODO: optimalize! | |
a6918753 | 1473 | v_field = bt_field_structure_borrow_field_by_name( |
e98a2d6e | 1474 | notit->dscopes.stream_event_header, "v"); |
8b45963b | 1475 | BT_ASSERT(v_field); |
e98a2d6e PP |
1476 | |
1477 | v_struct_field = | |
a6918753 | 1478 | bt_field_variant_borrow_current_field(v_field); |
e98a2d6e PP |
1479 | if (!v_struct_field) { |
1480 | goto end_v_field_type; | |
1481 | } | |
1482 | ||
1483 | // TODO: optimalize! | |
a6918753 PP |
1484 | v_struct_id_field = bt_field_structure_borrow_field_by_name( |
1485 | v_struct_field, "id"); | |
e98a2d6e PP |
1486 | if (!v_struct_id_field) { |
1487 | goto end_v_field_type; | |
1488 | } | |
1489 | ||
839d52a5 | 1490 | if (bt_field_is_integer(v_struct_id_field)) { |
8deee039 | 1491 | ret = bt_field_integer_unsigned_get_value( |
fdf0e7a0 PP |
1492 | v_struct_id_field, &event_id); |
1493 | if (ret) { | |
1494 | BT_LOGV("Cannot get value of unsigned integer field (`id`): continuing: " | |
1495 | "notit=%p, field-addr=%p", | |
1496 | notit, v_struct_id_field); | |
1497 | event_id = -1ULL; | |
1498 | } | |
e98a2d6e | 1499 | } |
e98a2d6e PP |
1500 | } |
1501 | ||
a6918753 | 1502 | end_v_field_type: |
e98a2d6e PP |
1503 | if (id_field_type && event_id == -1ULL) { |
1504 | /* Check "id" field */ | |
839d52a5 | 1505 | struct bt_field *id_field = NULL; |
0b0bf682 | 1506 | int ret_get_value = 0; |
e98a2d6e PP |
1507 | |
1508 | // TODO: optimalize! | |
a6918753 | 1509 | id_field = bt_field_structure_borrow_field_by_name( |
e98a2d6e | 1510 | notit->dscopes.stream_event_header, "id"); |
fdf0e7a0 PP |
1511 | if (!id_field) { |
1512 | goto check_event_id; | |
1513 | } | |
e98a2d6e | 1514 | |
a6918753 PP |
1515 | ret_get_value = bt_field_integer_unsigned_get_value( |
1516 | id_field, &event_id); | |
8b45963b | 1517 | BT_ASSERT(ret_get_value == 0); |
e98a2d6e PP |
1518 | } |
1519 | ||
fdf0e7a0 | 1520 | check_event_id: |
e98a2d6e | 1521 | if (event_id == -1ULL) { |
fdf0e7a0 | 1522 | single_event_class: |
e98a2d6e | 1523 | /* Event ID not found: single event? */ |
8b45963b | 1524 | BT_ASSERT(bt_stream_class_get_event_class_count( |
e98a2d6e PP |
1525 | notit->meta.stream_class) == 1); |
1526 | event_id = 0; | |
1527 | } | |
1528 | ||
fdf0e7a0 PP |
1529 | BT_LOGV("Found event class ID to use: notit-addr=%p, " |
1530 | "stream-class-addr=%p, stream-class-name=\"%s\", " | |
1531 | "stream-class-id=%" PRId64 ", " | |
1532 | "event-class-id=%" PRIu64, | |
1533 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1534 | bt_stream_class_get_name(notit->meta.stream_class), |
1535 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1536 | event_id); |
b8418c69 | 1537 | notit->meta.event_class = bt_stream_class_borrow_event_class_by_id( |
e98a2d6e PP |
1538 | notit->meta.stream_class, event_id); |
1539 | if (!notit->meta.event_class) { | |
fdf0e7a0 PP |
1540 | BT_LOGW("No event class with ID of event class ID to use in stream class: " |
1541 | "notit-addr=%p, stream-class-addr=%p, " | |
1542 | "stream-class-name=\"%s\", " | |
1543 | "stream-class-id=%" PRId64 ", " | |
1544 | "event-class-id=%" PRIu64, | |
1545 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1546 | bt_stream_class_get_name(notit->meta.stream_class), |
1547 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1548 | event_id); |
839d52a5 | 1549 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1550 | goto end; |
1551 | } | |
1552 | ||
fdf0e7a0 PP |
1553 | BT_LOGV("Set current event class: " |
1554 | "notit-addr=%p, event-class-addr=%p, " | |
1555 | "event-class-name=\"%s\", event-class-id=%" PRId64, | |
1556 | notit, notit->meta.event_class, | |
839d52a5 PP |
1557 | bt_event_class_get_name(notit->meta.event_class), |
1558 | bt_event_class_get_id(notit->meta.event_class)); | |
fdf0e7a0 | 1559 | |
e98a2d6e | 1560 | end: |
e98a2d6e PP |
1561 | return status; |
1562 | } | |
1563 | ||
a6918753 PP |
1564 | static inline |
1565 | enum bt_notif_iter_status set_current_event_notification( | |
1566 | struct bt_notif_iter *notit) | |
1567 | { | |
1568 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
1569 | struct bt_notification *notif = NULL; | |
1570 | ||
1571 | BT_ASSERT(notit->meta.event_class); | |
1572 | BT_ASSERT(notit->packet); | |
1573 | BT_LOGV("Creating event notification from event class and packet: " | |
1574 | "notit-addr=%p, ec-addr=%p, ec-name=\"%s\", packet-addr=%p", | |
1575 | notit, notit->meta.event_class, | |
1576 | bt_event_class_get_name(notit->meta.event_class), | |
1577 | notit->packet); | |
f7c3ac09 PP |
1578 | BT_ASSERT(notit->graph); |
1579 | notif = bt_notification_event_create(notit->graph, | |
1580 | notit->meta.event_class, notit->packet, | |
1581 | notit->meta.cc_prio_map); | |
a6918753 PP |
1582 | if (!notif) { |
1583 | BT_LOGE("Cannot create event notification: " | |
1584 | "notit-addr=%p, ec-addr=%p, ec-name=\"%s\", " | |
1585 | "packet-addr=%p", | |
1586 | notit, notit->meta.event_class, | |
1587 | bt_event_class_get_name(notit->meta.event_class), | |
1588 | notit->packet); | |
1589 | goto error; | |
1590 | } | |
1591 | ||
1592 | goto end; | |
1593 | ||
1594 | error: | |
1595 | BT_PUT(notif); | |
1596 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1597 | ||
1598 | end: | |
1599 | BT_MOVE(notit->event_notif, notif); | |
1600 | return status; | |
1601 | } | |
1602 | ||
e98a2d6e | 1603 | static |
839d52a5 PP |
1604 | enum bt_notif_iter_status after_event_header_state( |
1605 | struct bt_notif_iter *notit) | |
e98a2d6e | 1606 | { |
839d52a5 | 1607 | enum bt_notif_iter_status status; |
e98a2d6e | 1608 | |
e98a2d6e | 1609 | status = set_current_event_class(notit); |
839d52a5 | 1610 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
e98a2d6e PP |
1611 | goto end; |
1612 | } | |
1613 | ||
a6918753 PP |
1614 | status = set_current_event_notification(notit); |
1615 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
1616 | goto end; | |
1617 | } | |
1618 | ||
1619 | notit->event = bt_notification_event_borrow_event(notit->event_notif); | |
1620 | BT_ASSERT(notit->event); | |
1621 | ||
1622 | if (notit->event_header_field) { | |
1623 | int ret; | |
1624 | ||
1625 | BT_ASSERT(notit->event); | |
1626 | ret = bt_event_move_header(notit->event, | |
1627 | notit->event_header_field); | |
1628 | ||
1629 | if (ret) { | |
1630 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1631 | goto end; | |
1632 | } | |
1633 | ||
1634 | notit->event_header_field = NULL; | |
1635 | ||
1636 | /* | |
1637 | * At this point notit->dscopes.stream_event_header has | |
1638 | * the same value as the event header field within | |
1639 | * notit->event. | |
1640 | */ | |
1641 | BT_ASSERT(bt_event_borrow_header(notit->event) == | |
1642 | notit->dscopes.stream_event_header); | |
1643 | } | |
1644 | ||
e98a2d6e PP |
1645 | notit->state = STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN; |
1646 | ||
1647 | end: | |
1648 | return status; | |
1649 | } | |
1650 | ||
1651 | static | |
839d52a5 PP |
1652 | enum bt_notif_iter_status read_stream_event_context_begin_state( |
1653 | struct bt_notif_iter *notit) | |
e98a2d6e | 1654 | { |
839d52a5 PP |
1655 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1656 | struct bt_field_type *stream_event_context_type; | |
e98a2d6e | 1657 | |
8deee039 | 1658 | stream_event_context_type = |
b8418c69 | 1659 | bt_stream_class_borrow_event_context_field_type( |
8deee039 | 1660 | notit->meta.stream_class); |
e98a2d6e | 1661 | if (!stream_event_context_type) { |
835b2d10 | 1662 | notit->state = STATE_DSCOPE_EVENT_CONTEXT_BEGIN; |
e98a2d6e PP |
1663 | goto end; |
1664 | } | |
1665 | ||
a6918753 PP |
1666 | BT_ASSERT(!notit->dscopes.stream_event_context); |
1667 | notit->dscopes.stream_event_context = | |
1668 | bt_event_borrow_stream_event_context(notit->event); | |
1669 | BT_ASSERT(notit->dscopes.stream_event_context); | |
fdf0e7a0 PP |
1670 | BT_LOGV("Decoding stream event context field: " |
1671 | "notit-addr=%p, stream-class-addr=%p, " | |
1672 | "stream-class-name=\"%s\", stream-class-id=%" PRId64 ", " | |
1673 | "ft-addr=%p", | |
1674 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1675 | bt_stream_class_get_name(notit->meta.stream_class), |
1676 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1677 | stream_event_context_type); |
e98a2d6e PP |
1678 | status = read_dscope_begin_state(notit, stream_event_context_type, |
1679 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN, | |
1680 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE, | |
a6918753 | 1681 | notit->dscopes.stream_event_context); |
fdf0e7a0 PP |
1682 | if (status < 0) { |
1683 | BT_LOGW("Cannot decode stream event context field: " | |
1684 | "notit-addr=%p, stream-class-addr=%p, " | |
1685 | "stream-class-name=\"%s\", " | |
1686 | "stream-class-id=%" PRId64 ", ft-addr=%p", | |
1687 | notit, notit->meta.stream_class, | |
839d52a5 PP |
1688 | bt_stream_class_get_name(notit->meta.stream_class), |
1689 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 PP |
1690 | stream_event_context_type); |
1691 | } | |
e98a2d6e PP |
1692 | |
1693 | end: | |
e98a2d6e PP |
1694 | return status; |
1695 | } | |
1696 | ||
1697 | static | |
839d52a5 PP |
1698 | enum bt_notif_iter_status read_stream_event_context_continue_state( |
1699 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1700 | { |
1701 | return read_dscope_continue_state(notit, | |
1702 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN); | |
1703 | } | |
1704 | ||
1705 | static | |
839d52a5 PP |
1706 | enum bt_notif_iter_status read_event_context_begin_state( |
1707 | struct bt_notif_iter *notit) | |
e98a2d6e | 1708 | { |
839d52a5 PP |
1709 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1710 | struct bt_field_type *event_context_type; | |
e98a2d6e | 1711 | |
b8418c69 | 1712 | event_context_type = bt_event_class_borrow_context_field_type( |
e98a2d6e PP |
1713 | notit->meta.event_class); |
1714 | if (!event_context_type) { | |
835b2d10 | 1715 | notit->state = STATE_DSCOPE_EVENT_PAYLOAD_BEGIN; |
e98a2d6e PP |
1716 | goto end; |
1717 | } | |
fdf0e7a0 | 1718 | |
a6918753 PP |
1719 | BT_ASSERT(!notit->dscopes.event_context); |
1720 | notit->dscopes.event_context = bt_event_borrow_context(notit->event); | |
1721 | BT_ASSERT(notit->dscopes.event_context); | |
fdf0e7a0 PP |
1722 | BT_LOGV("Decoding event context field: " |
1723 | "notit-addr=%p, event-class-addr=%p, " | |
1724 | "event-class-name=\"%s\", event-class-id=%" PRId64 ", " | |
1725 | "ft-addr=%p", | |
1726 | notit, notit->meta.event_class, | |
839d52a5 PP |
1727 | bt_event_class_get_name(notit->meta.event_class), |
1728 | bt_event_class_get_id(notit->meta.event_class), | |
fdf0e7a0 | 1729 | event_context_type); |
e98a2d6e PP |
1730 | status = read_dscope_begin_state(notit, event_context_type, |
1731 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, | |
1732 | STATE_DSCOPE_EVENT_CONTEXT_CONTINUE, | |
a6918753 | 1733 | notit->dscopes.event_context); |
fdf0e7a0 PP |
1734 | if (status < 0) { |
1735 | BT_LOGW("Cannot decode event context field: " | |
1736 | "notit-addr=%p, event-class-addr=%p, " | |
1737 | "event-class-name=\"%s\", " | |
1738 | "event-class-id=%" PRId64 ", ft-addr=%p", | |
1739 | notit, notit->meta.event_class, | |
839d52a5 PP |
1740 | bt_event_class_get_name(notit->meta.event_class), |
1741 | bt_event_class_get_id(notit->meta.event_class), | |
fdf0e7a0 PP |
1742 | event_context_type); |
1743 | } | |
e98a2d6e PP |
1744 | |
1745 | end: | |
e98a2d6e PP |
1746 | return status; |
1747 | } | |
1748 | ||
1749 | static | |
839d52a5 PP |
1750 | enum bt_notif_iter_status read_event_context_continue_state( |
1751 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1752 | { |
1753 | return read_dscope_continue_state(notit, | |
1754 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN); | |
1755 | } | |
1756 | ||
1757 | static | |
839d52a5 PP |
1758 | enum bt_notif_iter_status read_event_payload_begin_state( |
1759 | struct bt_notif_iter *notit) | |
e98a2d6e | 1760 | { |
839d52a5 PP |
1761 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1762 | struct bt_field_type *event_payload_type; | |
e98a2d6e | 1763 | |
b8418c69 | 1764 | event_payload_type = bt_event_class_borrow_payload_field_type( |
e98a2d6e PP |
1765 | notit->meta.event_class); |
1766 | if (!event_payload_type) { | |
835b2d10 | 1767 | notit->state = STATE_EMIT_NOTIF_EVENT; |
e98a2d6e PP |
1768 | goto end; |
1769 | } | |
1770 | ||
a6918753 PP |
1771 | BT_ASSERT(!notit->dscopes.event_payload); |
1772 | notit->dscopes.event_payload = bt_event_borrow_payload(notit->event); | |
1773 | BT_ASSERT(notit->dscopes.event_payload); | |
fdf0e7a0 PP |
1774 | BT_LOGV("Decoding event payload field: " |
1775 | "notit-addr=%p, event-class-addr=%p, " | |
1776 | "event-class-name=\"%s\", event-class-id=%" PRId64 ", " | |
1777 | "ft-addr=%p", | |
1778 | notit, notit->meta.event_class, | |
839d52a5 PP |
1779 | bt_event_class_get_name(notit->meta.event_class), |
1780 | bt_event_class_get_id(notit->meta.event_class), | |
fdf0e7a0 | 1781 | event_payload_type); |
e98a2d6e PP |
1782 | status = read_dscope_begin_state(notit, event_payload_type, |
1783 | STATE_EMIT_NOTIF_EVENT, | |
1784 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
a6918753 | 1785 | notit->dscopes.event_payload); |
fdf0e7a0 PP |
1786 | if (status < 0) { |
1787 | BT_LOGW("Cannot decode event payload field: " | |
1788 | "notit-addr=%p, event-class-addr=%p, " | |
1789 | "event-class-name=\"%s\", " | |
1790 | "event-class-id=%" PRId64 ", ft-addr=%p", | |
1791 | notit, notit->meta.event_class, | |
839d52a5 PP |
1792 | bt_event_class_get_name(notit->meta.event_class), |
1793 | bt_event_class_get_id(notit->meta.event_class), | |
fdf0e7a0 PP |
1794 | event_payload_type); |
1795 | } | |
e98a2d6e PP |
1796 | |
1797 | end: | |
e98a2d6e PP |
1798 | return status; |
1799 | } | |
1800 | ||
1801 | static | |
839d52a5 PP |
1802 | enum bt_notif_iter_status read_event_payload_continue_state( |
1803 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1804 | { |
1805 | return read_dscope_continue_state(notit, STATE_EMIT_NOTIF_EVENT); | |
1806 | } | |
1807 | ||
1808 | static | |
839d52a5 PP |
1809 | enum bt_notif_iter_status skip_packet_padding_state( |
1810 | struct bt_notif_iter *notit) | |
e98a2d6e | 1811 | { |
839d52a5 | 1812 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e PP |
1813 | size_t bits_to_skip; |
1814 | ||
8b45963b | 1815 | BT_ASSERT(notit->cur_packet_size > 0); |
e98a2d6e PP |
1816 | bits_to_skip = notit->cur_packet_size - packet_at(notit); |
1817 | if (bits_to_skip == 0) { | |
1818 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1819 | goto end; | |
1820 | } else { | |
1821 | size_t bits_to_consume; | |
fdf0e7a0 PP |
1822 | |
1823 | BT_LOGV("Trying to skip %zu bits of padding: notit-addr=%p, size=%zu", | |
1824 | bits_to_skip, notit, bits_to_skip); | |
e98a2d6e | 1825 | status = buf_ensure_available_bits(notit); |
839d52a5 | 1826 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
e98a2d6e PP |
1827 | goto end; |
1828 | } | |
1829 | ||
1830 | bits_to_consume = MIN(buf_available_bits(notit), bits_to_skip); | |
fdf0e7a0 PP |
1831 | BT_LOGV("Skipping %zu bits of padding: notit-addr=%p, size=%zu", |
1832 | bits_to_consume, notit, bits_to_consume); | |
e98a2d6e PP |
1833 | buf_consume_bits(notit, bits_to_consume); |
1834 | bits_to_skip = notit->cur_packet_size - packet_at(notit); | |
1835 | if (bits_to_skip == 0) { | |
1836 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1837 | goto end; | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | end: | |
1842 | return status; | |
1843 | } | |
1844 | ||
1845 | static inline | |
839d52a5 | 1846 | enum bt_notif_iter_status handle_state(struct bt_notif_iter *notit) |
e98a2d6e | 1847 | { |
839d52a5 | 1848 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
fdf0e7a0 | 1849 | const enum state state = notit->state; |
e98a2d6e | 1850 | |
fdf0e7a0 PP |
1851 | BT_LOGV("Handling state: notit-addr=%p, state=%s", |
1852 | notit, state_string(state)); | |
e98a2d6e PP |
1853 | |
1854 | // TODO: optimalize! | |
fdf0e7a0 | 1855 | switch (state) { |
e98a2d6e PP |
1856 | case STATE_INIT: |
1857 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1858 | break; | |
1859 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
1860 | status = read_packet_header_begin_state(notit); | |
1861 | break; | |
1862 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
1863 | status = read_packet_header_continue_state(notit); | |
1864 | break; | |
1865 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
1866 | status = after_packet_header_state(notit); | |
1867 | break; | |
1868 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
1869 | status = read_packet_context_begin_state(notit); | |
1870 | break; | |
1871 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
1872 | status = read_packet_context_continue_state(notit); | |
1873 | break; | |
1874 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
1875 | status = after_packet_context_state(notit); | |
1876 | break; | |
6ff151ad PP |
1877 | case STATE_EMIT_NOTIF_NEW_STREAM: |
1878 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
1879 | break; | |
e98a2d6e PP |
1880 | case STATE_EMIT_NOTIF_NEW_PACKET: |
1881 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1882 | break; | |
1883 | case STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN: | |
1884 | status = read_event_header_begin_state(notit); | |
1885 | break; | |
1886 | case STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE: | |
1887 | status = read_event_header_continue_state(notit); | |
1888 | break; | |
1889 | case STATE_AFTER_STREAM_EVENT_HEADER: | |
1890 | status = after_event_header_state(notit); | |
1891 | break; | |
1892 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN: | |
1893 | status = read_stream_event_context_begin_state(notit); | |
1894 | break; | |
1895 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE: | |
1896 | status = read_stream_event_context_continue_state(notit); | |
1897 | break; | |
1898 | case STATE_DSCOPE_EVENT_CONTEXT_BEGIN: | |
1899 | status = read_event_context_begin_state(notit); | |
1900 | break; | |
1901 | case STATE_DSCOPE_EVENT_CONTEXT_CONTINUE: | |
1902 | status = read_event_context_continue_state(notit); | |
1903 | break; | |
1904 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: | |
1905 | status = read_event_payload_begin_state(notit); | |
1906 | break; | |
1907 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
1908 | status = read_event_payload_continue_state(notit); | |
1909 | break; | |
1910 | case STATE_EMIT_NOTIF_EVENT: | |
1911 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1912 | break; | |
1913 | case STATE_SKIP_PACKET_PADDING: | |
1914 | status = skip_packet_padding_state(notit); | |
1915 | break; | |
1916 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
1917 | notit->state = STATE_SKIP_PACKET_PADDING; | |
1918 | break; | |
fdf0e7a0 PP |
1919 | default: |
1920 | BT_LOGD("Unknown CTF plugin notification iterator state: " | |
1921 | "notit-addr=%p, state=%d", notit, notit->state); | |
1922 | abort(); | |
e98a2d6e PP |
1923 | } |
1924 | ||
fdf0e7a0 PP |
1925 | BT_LOGV("Handled state: notit-addr=%p, status=%s, " |
1926 | "prev-state=%s, cur-state=%s", | |
839d52a5 | 1927 | notit, bt_notif_iter_status_string(status), |
fdf0e7a0 | 1928 | state_string(state), state_string(notit->state)); |
e98a2d6e PP |
1929 | return status; |
1930 | } | |
1931 | ||
2cf1d51e JG |
1932 | /** |
1933 | * Resets the internal state of a CTF notification iterator. | |
2cf1d51e | 1934 | */ |
6ff151ad | 1935 | BT_HIDDEN |
839d52a5 | 1936 | void bt_notif_iter_reset(struct bt_notif_iter *notit) |
e98a2d6e | 1937 | { |
8b45963b | 1938 | BT_ASSERT(notit); |
fdf0e7a0 | 1939 | BT_LOGD("Resetting notification iterator: addr=%p", notit); |
e98a2d6e | 1940 | stack_clear(notit->stack); |
b8418c69 PP |
1941 | notit->meta.stream_class = NULL; |
1942 | notit->meta.event_class = NULL; | |
e98a2d6e | 1943 | BT_PUT(notit->packet); |
5184a1d6 | 1944 | BT_PUT(notit->stream); |
a6918753 PP |
1945 | BT_PUT(notit->event_notif); |
1946 | release_all_dscopes(notit); | |
1947 | notit->cur_dscope_field = NULL; | |
1948 | ||
1949 | if (notit->packet_header_field) { | |
1950 | bt_packet_header_field_release(notit->packet_header_field); | |
1951 | notit->packet_header_field = NULL; | |
1952 | } | |
1953 | ||
1954 | if (notit->packet_context_field) { | |
1955 | bt_packet_context_field_release(notit->packet_context_field); | |
1956 | notit->packet_context_field = NULL; | |
1957 | } | |
1958 | ||
1959 | if (notit->event_header_field) { | |
1960 | bt_event_header_field_release(notit->event_header_field); | |
1961 | notit->event_header_field = NULL; | |
1962 | } | |
1963 | ||
e98a2d6e PP |
1964 | notit->buf.addr = NULL; |
1965 | notit->buf.sz = 0; | |
1966 | notit->buf.at = 0; | |
bb8744a7 | 1967 | notit->buf.last_eh_at = SIZE_MAX; |
e98a2d6e PP |
1968 | notit->buf.packet_offset = 0; |
1969 | notit->state = STATE_INIT; | |
1970 | notit->cur_content_size = -1; | |
1971 | notit->cur_packet_size = -1; | |
bb230c9b | 1972 | notit->cur_packet_offset = -1; |
6ff151ad | 1973 | notit->stream_begin_emitted = false; |
a6918753 | 1974 | notit->cur_timestamp_end = NULL; |
e98a2d6e PP |
1975 | } |
1976 | ||
2cf1d51e | 1977 | static |
839d52a5 | 1978 | int bt_notif_iter_switch_packet(struct bt_notif_iter *notit) |
2cf1d51e JG |
1979 | { |
1980 | int ret = 0; | |
1981 | ||
c937c615 PP |
1982 | /* |
1983 | * We don't put the stream class here because we need to make | |
1984 | * sure that all the packets processed by the same notification | |
1985 | * iterator refer to the same stream class (the first one). | |
1986 | */ | |
8b45963b | 1987 | BT_ASSERT(notit); |
a6918753 | 1988 | |
bb230c9b JG |
1989 | if (notit->cur_packet_size != -1) { |
1990 | notit->cur_packet_offset += notit->cur_packet_size; | |
1991 | } | |
a6918753 | 1992 | |
bb230c9b JG |
1993 | BT_LOGV("Switching packet: notit-addr=%p, cur=%zu, " |
1994 | "packet-offset=%" PRId64, notit, notit->buf.at, | |
1995 | notit->cur_packet_offset); | |
2cf1d51e | 1996 | stack_clear(notit->stack); |
b8418c69 | 1997 | notit->meta.event_class = NULL; |
2cf1d51e | 1998 | BT_PUT(notit->packet); |
a6918753 PP |
1999 | BT_PUT(notit->event_notif); |
2000 | notit->cur_timestamp_end = NULL; | |
2001 | release_all_dscopes(notit); | |
2002 | notit->cur_dscope_field = NULL; | |
2cf1d51e JG |
2003 | |
2004 | /* | |
2005 | * Adjust current buffer so that addr points to the beginning of the new | |
2006 | * packet. | |
2007 | */ | |
2008 | if (notit->buf.addr) { | |
2009 | size_t consumed_bytes = (size_t) (notit->buf.at / CHAR_BIT); | |
2010 | ||
2011 | /* Packets are assumed to start on a byte frontier. */ | |
2012 | if (notit->buf.at % CHAR_BIT) { | |
fdf0e7a0 PP |
2013 | BT_LOGW("Cannot switch packet: current position is not a multiple of 8: " |
2014 | "notit-addr=%p, cur=%zu", notit, notit->buf.at); | |
2cf1d51e JG |
2015 | ret = -1; |
2016 | goto end; | |
2017 | } | |
2018 | ||
2019 | notit->buf.addr += consumed_bytes; | |
2020 | notit->buf.sz -= consumed_bytes; | |
2021 | notit->buf.at = 0; | |
2022 | notit->buf.packet_offset = 0; | |
fdf0e7a0 PP |
2023 | BT_LOGV("Adjusted buffer: addr=%p, size=%zu", |
2024 | notit->buf.addr, notit->buf.sz); | |
2cf1d51e JG |
2025 | } |
2026 | ||
2027 | notit->cur_content_size = -1; | |
2028 | notit->cur_packet_size = -1; | |
5f870343 | 2029 | notit->cur_sc_field_path_cache = NULL; |
fdf0e7a0 | 2030 | |
2cf1d51e JG |
2031 | end: |
2032 | return ret; | |
2033 | } | |
2034 | ||
e98a2d6e | 2035 | static |
a6918753 | 2036 | struct bt_field *borrow_next_field(struct bt_notif_iter *notit) |
e98a2d6e | 2037 | { |
839d52a5 PP |
2038 | struct bt_field *next_field = NULL; |
2039 | struct bt_field *base_field; | |
2040 | struct bt_field_type *base_type; | |
e98a2d6e PP |
2041 | size_t index; |
2042 | ||
8b45963b | 2043 | BT_ASSERT(!stack_empty(notit->stack)); |
e98a2d6e PP |
2044 | index = stack_top(notit->stack)->index; |
2045 | base_field = stack_top(notit->stack)->base; | |
8b45963b | 2046 | BT_ASSERT(base_field); |
b8418c69 | 2047 | base_type = bt_field_borrow_type(base_field); |
8b45963b | 2048 | BT_ASSERT(base_type); |
e98a2d6e | 2049 | |
839d52a5 PP |
2050 | switch (bt_field_type_get_type_id(base_type)) { |
2051 | case BT_FIELD_TYPE_ID_STRUCT: | |
6ff151ad | 2052 | { |
a6918753 | 2053 | next_field = bt_field_structure_borrow_field_by_index( |
e98a2d6e PP |
2054 | base_field, index); |
2055 | break; | |
6ff151ad | 2056 | } |
839d52a5 | 2057 | case BT_FIELD_TYPE_ID_ARRAY: |
a6918753 | 2058 | next_field = bt_field_array_borrow_field(base_field, index); |
e98a2d6e | 2059 | break; |
839d52a5 | 2060 | case BT_FIELD_TYPE_ID_SEQUENCE: |
a6918753 | 2061 | next_field = bt_field_sequence_borrow_field(base_field, index); |
e98a2d6e | 2062 | break; |
839d52a5 | 2063 | case BT_FIELD_TYPE_ID_VARIANT: |
a6918753 | 2064 | next_field = bt_field_variant_borrow_current_field(base_field); |
e98a2d6e PP |
2065 | break; |
2066 | default: | |
fdf0e7a0 PP |
2067 | BT_LOGF("Unknown base field type ID: " |
2068 | "notit-addr=%p, ft-addr=%p, ft-id=%s", | |
2069 | notit, base_type, | |
8deee039 | 2070 | bt_common_field_type_id_string( |
839d52a5 | 2071 | bt_field_type_get_type_id(base_type))); |
0fbb9a9f | 2072 | abort(); |
e98a2d6e PP |
2073 | } |
2074 | ||
e98a2d6e PP |
2075 | return next_field; |
2076 | } | |
2077 | ||
c44c3e70 | 2078 | static |
a6918753 PP |
2079 | void update_clock_state(uint64_t *state, struct bt_field *value_field, |
2080 | struct bt_field_type *value_type) | |
c44c3e70 | 2081 | { |
c44c3e70 JG |
2082 | uint64_t requested_new_value; |
2083 | uint64_t requested_new_value_mask; | |
2084 | uint64_t cur_value_masked; | |
2085 | int requested_new_value_size; | |
2086 | int ret; | |
2087 | ||
8b45963b PP |
2088 | BT_ASSERT(value_type); |
2089 | BT_ASSERT(bt_field_type_is_integer(value_type)); | |
c44c3e70 | 2090 | requested_new_value_size = |
839d52a5 | 2091 | bt_field_type_integer_get_size(value_type); |
8b45963b | 2092 | BT_ASSERT(requested_new_value_size > 0); |
8deee039 | 2093 | ret = bt_field_integer_unsigned_get_value(value_field, |
c44c3e70 | 2094 | &requested_new_value); |
8b45963b | 2095 | BT_ASSERT(!ret); |
c44c3e70 JG |
2096 | |
2097 | /* | |
2098 | * Special case for a 64-bit new value, which is the limit | |
2099 | * of a clock value as of this version: overwrite the | |
2100 | * current value directly. | |
2101 | */ | |
2102 | if (requested_new_value_size == 64) { | |
2103 | *state = requested_new_value; | |
2104 | goto end; | |
2105 | } | |
2106 | ||
2107 | requested_new_value_mask = (1ULL << requested_new_value_size) - 1; | |
2108 | cur_value_masked = *state & requested_new_value_mask; | |
2109 | ||
2110 | if (requested_new_value < cur_value_masked) { | |
2111 | /* | |
2112 | * It looks like a wrap happened on the number of bits | |
2113 | * of the requested new value. Assume that the clock | |
2114 | * value wrapped only one time. | |
2115 | */ | |
2116 | *state += requested_new_value_mask + 1; | |
2117 | } | |
2118 | ||
2119 | /* Clear the low bits of the current clock value. */ | |
2120 | *state &= ~requested_new_value_mask; | |
2121 | ||
2122 | /* Set the low bits of the current clock value. */ | |
2123 | *state |= requested_new_value; | |
b8418c69 | 2124 | |
c44c3e70 | 2125 | end: |
fdf0e7a0 PP |
2126 | BT_LOGV("Updated clock's value from integer field's value: " |
2127 | "value=%" PRIu64, *state); | |
c44c3e70 JG |
2128 | } |
2129 | ||
2130 | static | |
839d52a5 PP |
2131 | enum bt_btr_status update_clock(struct bt_notif_iter *notit, |
2132 | struct bt_field *int_field) | |
c44c3e70 | 2133 | { |
ac0c6bdd | 2134 | gboolean clock_class_found; |
501a8569 | 2135 | uint64_t *clock_state = NULL; |
839d52a5 PP |
2136 | struct bt_field_type *int_field_type = NULL; |
2137 | enum bt_btr_status ret = BT_BTR_STATUS_OK; | |
2138 | struct bt_clock_class *clock_class = NULL; | |
c44c3e70 | 2139 | |
b8418c69 | 2140 | int_field_type = bt_field_borrow_type(int_field); |
8b45963b | 2141 | BT_ASSERT(int_field_type); |
a6918753 PP |
2142 | |
2143 | if (bt_field_type_is_enumeration(int_field_type)) { | |
2144 | int_field_type = | |
2145 | bt_field_type_enumeration_borrow_container_field_type( | |
2146 | int_field_type); | |
2147 | } | |
2148 | ||
b8418c69 | 2149 | clock_class = bt_field_type_integer_borrow_mapped_clock_class( |
f45bfe88 | 2150 | int_field_type); |
ac0c6bdd | 2151 | if (likely(!clock_class)) { |
f45bfe88 | 2152 | goto end; |
c44c3e70 JG |
2153 | } |
2154 | ||
ac0c6bdd | 2155 | clock_class_found = g_hash_table_lookup_extended(notit->clock_states, |
fdf0e7a0 | 2156 | clock_class, NULL, (gpointer) &clock_state); |
501a8569 | 2157 | if (!clock_class_found) { |
c44c3e70 JG |
2158 | clock_state = g_new0(uint64_t, 1); |
2159 | if (!clock_state) { | |
fdf0e7a0 | 2160 | BT_LOGE_STR("Failed to allocate a uint64_t."); |
839d52a5 | 2161 | ret = BT_BTR_STATUS_ENOMEM; |
c44c3e70 JG |
2162 | goto end; |
2163 | } | |
fdf0e7a0 | 2164 | |
b8418c69 | 2165 | g_hash_table_insert(notit->clock_states, clock_class, |
fdf0e7a0 | 2166 | clock_state); |
c44c3e70 JG |
2167 | } |
2168 | ||
2169 | /* Update the clock's state. */ | |
fdf0e7a0 PP |
2170 | BT_LOGV("Updating notification iterator's clock's value from integer field: " |
2171 | "notit-addr=%p, clock-class-addr=%p, " | |
2172 | "clock-class-name=\"%s\", value=%" PRIu64, | |
2173 | notit, clock_class, | |
839d52a5 | 2174 | bt_clock_class_get_name(clock_class), *clock_state); |
a6918753 | 2175 | update_clock_state(clock_state, int_field, int_field_type); |
b8418c69 | 2176 | |
c44c3e70 | 2177 | end: |
c44c3e70 JG |
2178 | return ret; |
2179 | } | |
2180 | ||
e98a2d6e | 2181 | static |
839d52a5 PP |
2182 | enum bt_btr_status btr_unsigned_int_common(uint64_t value, |
2183 | struct bt_field_type *type, void *data, | |
a6918753 | 2184 | struct bt_field **out_field) |
839d52a5 PP |
2185 | { |
2186 | enum bt_btr_status status = BT_BTR_STATUS_OK; | |
2187 | struct bt_field *field = NULL; | |
839d52a5 | 2188 | struct bt_notif_iter *notit = data; |
e98a2d6e PP |
2189 | int ret; |
2190 | ||
fdf0e7a0 PP |
2191 | BT_LOGV("Common unsigned integer function called from BTR: " |
2192 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2193 | "ft-id=%s, value=%" PRIu64, | |
2194 | notit, notit->btr, type, | |
8deee039 | 2195 | bt_common_field_type_id_string( |
839d52a5 | 2196 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2197 | value); |
a6918753 | 2198 | field = borrow_next_field(notit); |
e98a2d6e | 2199 | if (!field) { |
a6918753 | 2200 | BT_LOGW("Cannot borrow next field: notit-addr=%p", notit); |
839d52a5 | 2201 | status = BT_BTR_STATUS_ERROR; |
a6918753 | 2202 | goto end; |
e98a2d6e PP |
2203 | } |
2204 | ||
a6918753 PP |
2205 | BT_ASSERT(bt_field_is_integer(field) || bt_field_is_enumeration(field)); |
2206 | ret = bt_field_integer_unsigned_set_value(field, value); | |
8b45963b | 2207 | BT_ASSERT(ret == 0); |
e98a2d6e | 2208 | stack_top(notit->stack)->index++; |
a6918753 | 2209 | *out_field = field; |
fdf0e7a0 | 2210 | |
a6918753 | 2211 | end: |
e98a2d6e PP |
2212 | return status; |
2213 | } | |
2214 | ||
5f870343 | 2215 | static |
839d52a5 PP |
2216 | enum bt_btr_status btr_timestamp_end_cb(void *value, |
2217 | struct bt_field_type *type, void *data) | |
5f870343 | 2218 | { |
839d52a5 PP |
2219 | enum bt_btr_status status; |
2220 | struct bt_field *field = NULL; | |
2221 | struct bt_notif_iter *notit = data; | |
a6918753 | 2222 | uint64_t uvalue = *((uint64_t *) value); |
5f870343 | 2223 | |
fdf0e7a0 PP |
2224 | BT_LOGV("`timestamp_end` unsigned integer function called from BTR: " |
2225 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2226 | "ft-id=%s", | |
2227 | notit, notit->btr, type, | |
8deee039 | 2228 | bt_common_field_type_id_string( |
839d52a5 | 2229 | bt_field_type_get_type_id(type))); |
5f870343 | 2230 | |
a6918753 PP |
2231 | status = btr_unsigned_int_common(uvalue, type, data, &field); |
2232 | ||
2233 | /* Set as the current packet's end timestamp field */ | |
2234 | notit->cur_timestamp_end = field; | |
5f870343 JG |
2235 | return status; |
2236 | } | |
2237 | ||
e98a2d6e | 2238 | static |
839d52a5 PP |
2239 | enum bt_btr_status btr_unsigned_int_cb(uint64_t value, |
2240 | struct bt_field_type *type, void *data) | |
5f870343 | 2241 | { |
839d52a5 PP |
2242 | struct bt_notif_iter *notit = data; |
2243 | enum bt_btr_status status = BT_BTR_STATUS_OK; | |
2244 | struct bt_field *field = NULL; | |
5f870343 JG |
2245 | struct field_cb_override *override; |
2246 | ||
fdf0e7a0 PP |
2247 | BT_LOGV("Unsigned integer function called from BTR: " |
2248 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2249 | "ft-id=%s, value=%" PRIu64, | |
2250 | notit, notit->btr, type, | |
8deee039 | 2251 | bt_common_field_type_id_string( |
839d52a5 | 2252 | bt_field_type_get_type_id(type)), |
fdf0e7a0 PP |
2253 | value); |
2254 | override = g_hash_table_lookup(notit->field_overrides, type); | |
5f870343 | 2255 | if (unlikely(override)) { |
fdf0e7a0 | 2256 | /* Override function logs errors */ |
5f870343 JG |
2257 | status = override->func(&value, type, override->data); |
2258 | goto end; | |
2259 | } | |
2260 | ||
2261 | status = btr_unsigned_int_common(value, type, data, &field); | |
839d52a5 | 2262 | if (status != BT_BTR_STATUS_OK) { |
fdf0e7a0 | 2263 | /* btr_unsigned_int_common() logs errors */ |
5f870343 JG |
2264 | goto end; |
2265 | } | |
2266 | ||
f45bfe88 | 2267 | status = update_clock(notit, field); |
a6918753 | 2268 | |
5f870343 JG |
2269 | end: |
2270 | return status; | |
2271 | } | |
2272 | ||
2273 | static | |
839d52a5 PP |
2274 | enum bt_btr_status btr_signed_int_cb(int64_t value, |
2275 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2276 | { |
839d52a5 PP |
2277 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2278 | struct bt_field *field = NULL; | |
839d52a5 | 2279 | struct bt_notif_iter *notit = data; |
e98a2d6e PP |
2280 | int ret; |
2281 | ||
fdf0e7a0 PP |
2282 | BT_LOGV("Signed integer function called from BTR: " |
2283 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2284 | "ft-id=%s, value=%" PRId64, | |
2285 | notit, notit->btr, type, | |
8deee039 | 2286 | bt_common_field_type_id_string( |
839d52a5 | 2287 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2288 | value); |
a6918753 | 2289 | field = borrow_next_field(notit); |
e98a2d6e | 2290 | if (!field) { |
a6918753 | 2291 | BT_LOGW("Cannot borrow next field: notit-addr=%p", notit); |
839d52a5 | 2292 | status = BT_BTR_STATUS_ERROR; |
a6918753 | 2293 | goto end; |
e98a2d6e PP |
2294 | } |
2295 | ||
a6918753 PP |
2296 | BT_ASSERT(bt_field_is_integer(field) || bt_field_is_enumeration(field)); |
2297 | ret = bt_field_integer_signed_set_value(field, value); | |
2298 | BT_ASSERT(ret == 0); | |
e98a2d6e | 2299 | stack_top(notit->stack)->index++; |
fdf0e7a0 | 2300 | |
a6918753 | 2301 | end: |
e98a2d6e PP |
2302 | return status; |
2303 | } | |
2304 | ||
2305 | static | |
839d52a5 PP |
2306 | enum bt_btr_status btr_floating_point_cb(double value, |
2307 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2308 | { |
839d52a5 PP |
2309 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2310 | struct bt_field *field = NULL; | |
2311 | struct bt_notif_iter *notit = data; | |
e98a2d6e PP |
2312 | int ret; |
2313 | ||
fdf0e7a0 PP |
2314 | BT_LOGV("Floating point number function called from BTR: " |
2315 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2316 | "ft-id=%s, value=%f", | |
2317 | notit, notit->btr, type, | |
8deee039 | 2318 | bt_common_field_type_id_string( |
839d52a5 | 2319 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2320 | value); |
a6918753 | 2321 | field = borrow_next_field(notit); |
e98a2d6e | 2322 | if (!field) { |
a6918753 | 2323 | BT_LOGW("Cannot borrow next field: notit-addr=%p", notit); |
839d52a5 | 2324 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2325 | goto end; |
2326 | } | |
2327 | ||
839d52a5 | 2328 | ret = bt_field_floating_point_set_value(field, value); |
8b45963b | 2329 | BT_ASSERT(!ret); |
e98a2d6e PP |
2330 | stack_top(notit->stack)->index++; |
2331 | ||
2332 | end: | |
e98a2d6e PP |
2333 | return status; |
2334 | } | |
2335 | ||
2336 | static | |
839d52a5 PP |
2337 | enum bt_btr_status btr_string_begin_cb( |
2338 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2339 | { |
839d52a5 PP |
2340 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2341 | struct bt_field *field = NULL; | |
2342 | struct bt_notif_iter *notit = data; | |
e98a2d6e PP |
2343 | int ret; |
2344 | ||
fdf0e7a0 PP |
2345 | BT_LOGV("String (beginning) function called from BTR: " |
2346 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2347 | "ft-id=%s", | |
2348 | notit, notit->btr, type, | |
8deee039 | 2349 | bt_common_field_type_id_string( |
839d52a5 | 2350 | bt_field_type_get_type_id(type))); |
a6918753 | 2351 | field = borrow_next_field(notit); |
e98a2d6e | 2352 | if (!field) { |
fdf0e7a0 | 2353 | BT_LOGW("Cannot get next field: notit-addr=%p", notit); |
839d52a5 | 2354 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2355 | goto end; |
2356 | } | |
2357 | ||
a6918753 PP |
2358 | ret = bt_field_string_clear(field); |
2359 | BT_ASSERT(ret == 0); | |
2360 | ||
e98a2d6e PP |
2361 | /* |
2362 | * Push on stack. Not a compound type per se, but we know that only | |
2363 | * btr_string_cb() may be called between this call and a subsequent | |
2364 | * call to btr_string_end_cb(). | |
2365 | */ | |
2366 | ret = stack_push(notit->stack, field); | |
2367 | if (ret) { | |
fdf0e7a0 PP |
2368 | BT_LOGE("Cannot push string field on stack: " |
2369 | "notit-addr=%p, field-addr=%p", notit, field); | |
839d52a5 | 2370 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2371 | goto end; |
2372 | } | |
2373 | ||
2374 | end: | |
e98a2d6e PP |
2375 | return status; |
2376 | } | |
2377 | ||
2378 | static | |
839d52a5 PP |
2379 | enum bt_btr_status btr_string_cb(const char *value, |
2380 | size_t len, struct bt_field_type *type, void *data) | |
e98a2d6e | 2381 | { |
839d52a5 PP |
2382 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2383 | struct bt_field *field = NULL; | |
2384 | struct bt_notif_iter *notit = data; | |
e98a2d6e PP |
2385 | int ret; |
2386 | ||
fdf0e7a0 PP |
2387 | BT_LOGV("String (substring) function called from BTR: " |
2388 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2389 | "ft-id=%s, string-length=%zu", | |
2390 | notit, notit->btr, type, | |
8deee039 | 2391 | bt_common_field_type_id_string( |
839d52a5 | 2392 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2393 | len); |
e98a2d6e | 2394 | field = stack_top(notit->stack)->base; |
8b45963b | 2395 | BT_ASSERT(field); |
e98a2d6e | 2396 | |
a6918753 | 2397 | /* Append current substring */ |
839d52a5 | 2398 | ret = bt_field_string_append_len(field, value, len); |
e98a2d6e | 2399 | if (ret) { |
fdf0e7a0 PP |
2400 | BT_LOGE("Cannot append substring to string field's value: " |
2401 | "notit-addr=%p, field-addr=%p, string-length=%zu, " | |
2402 | "ret=%d", notit, field, len, ret); | |
839d52a5 | 2403 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2404 | goto end; |
2405 | } | |
2406 | ||
2407 | end: | |
2408 | return status; | |
2409 | } | |
2410 | ||
2411 | static | |
839d52a5 PP |
2412 | enum bt_btr_status btr_string_end_cb( |
2413 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2414 | { |
839d52a5 | 2415 | struct bt_notif_iter *notit = data; |
e98a2d6e | 2416 | |
fdf0e7a0 PP |
2417 | BT_LOGV("String (end) function called from BTR: " |
2418 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2419 | "ft-id=%s", | |
2420 | notit, notit->btr, type, | |
8deee039 | 2421 | bt_common_field_type_id_string( |
839d52a5 | 2422 | bt_field_type_get_type_id(type))); |
fdf0e7a0 | 2423 | |
e98a2d6e PP |
2424 | /* Pop string field */ |
2425 | stack_pop(notit->stack); | |
2426 | ||
2427 | /* Go to next field */ | |
2428 | stack_top(notit->stack)->index++; | |
839d52a5 | 2429 | return BT_BTR_STATUS_OK; |
e98a2d6e PP |
2430 | } |
2431 | ||
839d52a5 PP |
2432 | enum bt_btr_status btr_compound_begin_cb( |
2433 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2434 | { |
839d52a5 PP |
2435 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2436 | struct bt_notif_iter *notit = data; | |
2437 | struct bt_field *field; | |
e98a2d6e PP |
2438 | int ret; |
2439 | ||
fdf0e7a0 PP |
2440 | BT_LOGV("Compound (beginning) function called from BTR: " |
2441 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2442 | "ft-id=%s", | |
2443 | notit, notit->btr, type, | |
8deee039 | 2444 | bt_common_field_type_id_string( |
839d52a5 | 2445 | bt_field_type_get_type_id(type))); |
fdf0e7a0 | 2446 | |
a6918753 | 2447 | /* Borrow field */ |
e98a2d6e | 2448 | if (stack_empty(notit->stack)) { |
a6918753 PP |
2449 | /* Root: already set by read_dscope_begin_state() */ |
2450 | field = notit->cur_dscope_field; | |
e98a2d6e | 2451 | } else { |
a6918753 | 2452 | field = borrow_next_field(notit); |
fdf0e7a0 | 2453 | if (!field) { |
a6918753 | 2454 | BT_LOGW("Cannot borrow next field: notit-addr=%p", notit); |
839d52a5 | 2455 | status = BT_BTR_STATUS_ERROR; |
fdf0e7a0 PP |
2456 | goto end; |
2457 | } | |
e98a2d6e PP |
2458 | } |
2459 | ||
2460 | /* Push field */ | |
8b45963b | 2461 | BT_ASSERT(field); |
e98a2d6e PP |
2462 | ret = stack_push(notit->stack, field); |
2463 | if (ret) { | |
fdf0e7a0 PP |
2464 | BT_LOGE("Cannot push compound field onto the stack: " |
2465 | "notit-addr=%p, ft-addr=%p, ft-id=%s, ret=%d", | |
2466 | notit, type, | |
8deee039 | 2467 | bt_common_field_type_id_string( |
839d52a5 | 2468 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2469 | ret); |
839d52a5 | 2470 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2471 | goto end; |
2472 | } | |
2473 | ||
2474 | end: | |
e98a2d6e PP |
2475 | return status; |
2476 | } | |
2477 | ||
839d52a5 PP |
2478 | enum bt_btr_status btr_compound_end_cb( |
2479 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2480 | { |
839d52a5 | 2481 | struct bt_notif_iter *notit = data; |
e98a2d6e | 2482 | |
fdf0e7a0 PP |
2483 | BT_LOGV("Compound (end) function called from BTR: " |
2484 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2485 | "ft-id=%s", | |
2486 | notit, notit->btr, type, | |
8deee039 | 2487 | bt_common_field_type_id_string( |
839d52a5 | 2488 | bt_field_type_get_type_id(type))); |
8b45963b | 2489 | BT_ASSERT(!stack_empty(notit->stack)); |
e98a2d6e PP |
2490 | |
2491 | /* Pop stack */ | |
2492 | stack_pop(notit->stack); | |
2493 | ||
2494 | /* If the stack is not empty, increment the base's index */ | |
2495 | if (!stack_empty(notit->stack)) { | |
2496 | stack_top(notit->stack)->index++; | |
2497 | } | |
2498 | ||
839d52a5 | 2499 | return BT_BTR_STATUS_OK; |
e98a2d6e PP |
2500 | } |
2501 | ||
2502 | static | |
839d52a5 PP |
2503 | struct bt_field *resolve_field(struct bt_notif_iter *notit, |
2504 | struct bt_field_path *path) | |
e98a2d6e | 2505 | { |
839d52a5 | 2506 | struct bt_field *field = NULL; |
e98a2d6e PP |
2507 | unsigned int i; |
2508 | ||
fdf0e7a0 | 2509 | if (BT_LOG_ON_VERBOSE) { |
839d52a5 | 2510 | GString *gstr = bt_field_path_string(path); |
fdf0e7a0 PP |
2511 | |
2512 | BT_LOGV("Resolving field path: notit-addr=%p, field-path=\"%s\"", | |
2513 | notit, gstr ? gstr->str : NULL); | |
2514 | ||
2515 | if (gstr) { | |
2516 | g_string_free(gstr, TRUE); | |
2517 | } | |
2518 | } | |
2519 | ||
839d52a5 PP |
2520 | switch (bt_field_path_get_root_scope(path)) { |
2521 | case BT_SCOPE_TRACE_PACKET_HEADER: | |
e98a2d6e PP |
2522 | field = notit->dscopes.trace_packet_header; |
2523 | break; | |
839d52a5 | 2524 | case BT_SCOPE_STREAM_PACKET_CONTEXT: |
e98a2d6e PP |
2525 | field = notit->dscopes.stream_packet_context; |
2526 | break; | |
839d52a5 | 2527 | case BT_SCOPE_STREAM_EVENT_HEADER: |
e98a2d6e PP |
2528 | field = notit->dscopes.stream_event_header; |
2529 | break; | |
839d52a5 | 2530 | case BT_SCOPE_STREAM_EVENT_CONTEXT: |
e98a2d6e PP |
2531 | field = notit->dscopes.stream_event_context; |
2532 | break; | |
839d52a5 | 2533 | case BT_SCOPE_EVENT_CONTEXT: |
e98a2d6e PP |
2534 | field = notit->dscopes.event_context; |
2535 | break; | |
839d52a5 | 2536 | case BT_SCOPE_EVENT_FIELDS: |
e98a2d6e PP |
2537 | field = notit->dscopes.event_payload; |
2538 | break; | |
2539 | default: | |
fdf0e7a0 PP |
2540 | BT_LOGF("Cannot resolve field path: unknown scope: " |
2541 | "notit-addr=%p, root-scope=%s", | |
8deee039 | 2542 | notit, bt_common_scope_string( |
839d52a5 | 2543 | bt_field_path_get_root_scope(path))); |
fdf0e7a0 | 2544 | abort(); |
e98a2d6e PP |
2545 | } |
2546 | ||
2547 | if (!field) { | |
fdf0e7a0 PP |
2548 | BT_LOGW("Cannot resolve field path: root field not found: " |
2549 | "notit-addr=%p, root-scope=%s", | |
8deee039 | 2550 | notit, bt_common_scope_string( |
839d52a5 | 2551 | bt_field_path_get_root_scope(path))); |
e98a2d6e PP |
2552 | goto end; |
2553 | } | |
2554 | ||
839d52a5 PP |
2555 | for (i = 0; i < bt_field_path_get_index_count(path); ++i) { |
2556 | struct bt_field *next_field = NULL; | |
2557 | struct bt_field_type *field_type; | |
2558 | int index = bt_field_path_get_index(path, i); | |
e98a2d6e | 2559 | |
b8418c69 | 2560 | field_type = bt_field_borrow_type(field); |
8b45963b | 2561 | BT_ASSERT(field_type); |
e98a2d6e | 2562 | |
a6918753 PP |
2563 | if (bt_field_type_is_structure(field_type)) { |
2564 | next_field = bt_field_structure_borrow_field_by_index( | |
e98a2d6e | 2565 | field, index); |
a6918753 | 2566 | } else if (bt_field_type_is_variant(field_type)) { |
e98a2d6e | 2567 | next_field = |
a6918753 | 2568 | bt_field_variant_borrow_current_field(field); |
e98a2d6e PP |
2569 | } |
2570 | ||
a6918753 | 2571 | field = NULL; |
e98a2d6e PP |
2572 | |
2573 | if (!next_field) { | |
fdf0e7a0 PP |
2574 | BT_LOGW("Cannot find next field: " |
2575 | "notit-addr=%p, ft-addr=%p, ft-id=%s, index=%d", | |
2576 | notit, field_type, | |
8deee039 | 2577 | bt_common_field_type_id_string( |
839d52a5 | 2578 | bt_field_type_get_type_id(field_type)), |
fdf0e7a0 | 2579 | index); |
e98a2d6e PP |
2580 | goto end; |
2581 | } | |
2582 | ||
2583 | /* Move next field -> field */ | |
a6918753 | 2584 | field = next_field; |
e98a2d6e PP |
2585 | } |
2586 | ||
2587 | end: | |
2588 | return field; | |
2589 | } | |
2590 | ||
2591 | static | |
839d52a5 | 2592 | int64_t btr_get_sequence_length_cb(struct bt_field_type *type, void *data) |
e98a2d6e PP |
2593 | { |
2594 | int64_t ret = -1; | |
2595 | int iret; | |
839d52a5 PP |
2596 | struct bt_field *seq_field; |
2597 | struct bt_field_path *field_path; | |
2598 | struct bt_notif_iter *notit = data; | |
2599 | struct bt_field *length_field = NULL; | |
e98a2d6e PP |
2600 | uint64_t length; |
2601 | ||
b8418c69 | 2602 | field_path = bt_field_type_sequence_borrow_length_field_path(type); |
8b45963b | 2603 | BT_ASSERT(field_path); |
2cf1d51e JG |
2604 | length_field = resolve_field(notit, field_path); |
2605 | if (!length_field) { | |
fdf0e7a0 PP |
2606 | BT_LOGW("Cannot resolve sequence field type's length field path: " |
2607 | "notit-addr=%p, ft-addr=%p", | |
2608 | notit, type); | |
e98a2d6e PP |
2609 | goto end; |
2610 | } | |
2611 | ||
8deee039 | 2612 | iret = bt_field_integer_unsigned_get_value(length_field, &length); |
e98a2d6e | 2613 | if (iret) { |
fdf0e7a0 PP |
2614 | BT_LOGE("Cannot get value of sequence length field: " |
2615 | "notit-addr=%p, field-addr=%p", | |
2616 | notit, length_field); | |
e98a2d6e PP |
2617 | goto end; |
2618 | } | |
2619 | ||
fdf0e7a0 | 2620 | seq_field = stack_top(notit->stack)->base; |
a6918753 | 2621 | iret = bt_field_sequence_set_length(seq_field, length); |
2cf1d51e | 2622 | if (iret) { |
fdf0e7a0 PP |
2623 | BT_LOGE("Cannot set sequence field's length field: " |
2624 | "notit-addr=%p, seq-field-addr=%p, " | |
a6918753 PP |
2625 | "length=%" PRIu64, |
2626 | notit, seq_field, length); | |
2cf1d51e JG |
2627 | goto end; |
2628 | } | |
fdf0e7a0 | 2629 | |
e98a2d6e PP |
2630 | ret = (int64_t) length; |
2631 | ||
2632 | end: | |
e98a2d6e PP |
2633 | return ret; |
2634 | } | |
2635 | ||
2636 | static | |
4feda515 | 2637 | struct bt_field_type *btr_borrow_variant_field_type_cb( |
839d52a5 | 2638 | struct bt_field_type *type, void *data) |
e98a2d6e | 2639 | { |
a6918753 | 2640 | int ret; |
839d52a5 PP |
2641 | struct bt_field_path *path; |
2642 | struct bt_notif_iter *notit = data; | |
2643 | struct bt_field *var_field; | |
2644 | struct bt_field *tag_field = NULL; | |
a6918753 PP |
2645 | struct bt_field_type *tag_ft = NULL; |
2646 | struct bt_field_type *tag_int_ft = NULL; | |
839d52a5 PP |
2647 | struct bt_field *selected_field = NULL; |
2648 | struct bt_field_type *selected_field_type = NULL; | |
e98a2d6e | 2649 | |
b8418c69 | 2650 | path = bt_field_type_variant_borrow_tag_field_path(type); |
8b45963b | 2651 | BT_ASSERT(path); |
e98a2d6e PP |
2652 | tag_field = resolve_field(notit, path); |
2653 | if (!tag_field) { | |
fdf0e7a0 PP |
2654 | BT_LOGW("Cannot resolve variant field type's tag field path: " |
2655 | "notit-addr=%p, ft-addr=%p", | |
2656 | notit, type); | |
e98a2d6e PP |
2657 | goto end; |
2658 | } | |
2659 | ||
2660 | /* | |
2661 | * We found the enumeration tag field instance which should be | |
2662 | * able to select a current field for this variant. This | |
2663 | * callback function we're in is called _after_ | |
2664 | * compound_begin(), so the current stack top's base field is | |
a6918753 PP |
2665 | * the variant field in question. We set the variant field's tag |
2666 | * here and then get the current (selected) field thanks to this | |
2667 | * tag field's value. This current field will also provide us | |
2668 | * with its type. Then, this current field will remain the | |
2669 | * current selected one until the next callback function call | |
2670 | * which is used to fill it. | |
e98a2d6e | 2671 | */ |
fdf0e7a0 | 2672 | var_field = stack_top(notit->stack)->base; |
a6918753 PP |
2673 | tag_ft = bt_field_borrow_type(tag_field); |
2674 | tag_int_ft = bt_field_type_enumeration_borrow_container_field_type( | |
2675 | tag_ft); | |
2676 | ||
2677 | if (bt_field_type_integer_is_signed(tag_int_ft)) { | |
2678 | int64_t tag_value; | |
2679 | ||
2680 | ret = bt_field_integer_signed_get_value(tag_field, &tag_value); | |
2681 | BT_ASSERT(ret == 0); | |
2682 | ret = bt_field_variant_set_tag_signed(var_field, tag_value); | |
2683 | BT_ASSERT(ret == 0); | |
2684 | } else { | |
2685 | uint64_t tag_value; | |
2686 | ||
2687 | ret = bt_field_integer_unsigned_get_value(tag_field, | |
2688 | &tag_value); | |
2689 | BT_ASSERT(ret == 0); | |
2690 | ret = bt_field_variant_set_tag_unsigned(var_field, tag_value); | |
2691 | BT_ASSERT(ret == 0); | |
2692 | } | |
2693 | ||
2694 | selected_field = bt_field_variant_borrow_current_field(var_field); | |
e98a2d6e | 2695 | if (!selected_field) { |
a6918753 PP |
2696 | BT_LOGW("Cannot borrow variant field's current field: " |
2697 | "notit-addr=%p, var-field-addr=%p", | |
2698 | notit, var_field); | |
e98a2d6e PP |
2699 | goto end; |
2700 | } | |
2701 | ||
4feda515 | 2702 | selected_field_type = bt_field_borrow_type(selected_field); |
e98a2d6e PP |
2703 | |
2704 | end: | |
e98a2d6e PP |
2705 | return selected_field_type; |
2706 | } | |
2707 | ||
1556a1af | 2708 | static |
a6918753 | 2709 | int set_event_clocks(struct bt_notif_iter *notit) |
1556a1af JG |
2710 | { |
2711 | int ret; | |
2712 | GHashTableIter iter; | |
839d52a5 | 2713 | struct bt_clock_class *clock_class; |
1556a1af JG |
2714 | uint64_t *clock_state; |
2715 | ||
2716 | g_hash_table_iter_init(&iter, notit->clock_states); | |
2717 | ||
ac0c6bdd | 2718 | while (g_hash_table_iter_next(&iter, (gpointer) &clock_class, |
a6918753 | 2719 | (gpointer) &clock_state)) { |
839d52a5 | 2720 | struct bt_clock_value *clock_value; |
1556a1af | 2721 | |
a6918753 PP |
2722 | clock_value = bt_event_borrow_clock_value(notit->event, |
2723 | clock_class); | |
1556a1af | 2724 | if (!clock_value) { |
a6918753 | 2725 | BT_LOGE("Cannot borrow clock value from event with given clock class: " |
fdf0e7a0 PP |
2726 | "notit-addr=%p, clock-class-addr=%p, " |
2727 | "clock-class-name=\"%s\"", | |
2728 | notit, clock_class, | |
839d52a5 | 2729 | bt_clock_class_get_name(clock_class)); |
1556a1af JG |
2730 | ret = -1; |
2731 | goto end; | |
2732 | } | |
5184a1d6 | 2733 | |
a6918753 PP |
2734 | ret = bt_clock_value_set_value(clock_value, *clock_state); |
2735 | BT_ASSERT(ret == 0); | |
5184a1d6 PP |
2736 | } |
2737 | ||
a6918753 | 2738 | ret = 0; |
5184a1d6 | 2739 | end: |
5184a1d6 PP |
2740 | return ret; |
2741 | } | |
2742 | ||
6ff151ad PP |
2743 | static |
2744 | void notify_new_stream(struct bt_notif_iter *notit, | |
2745 | struct bt_notification **notification) | |
2746 | { | |
a6918753 | 2747 | enum bt_notif_iter_status status; |
6ff151ad | 2748 | struct bt_notification *ret = NULL; |
6ff151ad | 2749 | |
a6918753 PP |
2750 | status = set_current_stream(notit); |
2751 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
2752 | BT_PUT(ret); | |
6ff151ad PP |
2753 | goto end; |
2754 | } | |
2755 | ||
2756 | BT_ASSERT(notit->stream); | |
f7c3ac09 PP |
2757 | BT_ASSERT(notit->graph); |
2758 | ret = bt_notification_stream_begin_create(notit->graph, notit->stream); | |
6ff151ad PP |
2759 | if (!ret) { |
2760 | BT_LOGE("Cannot create stream beginning notification: " | |
2761 | "notit-addr=%p, stream-addr=%p", | |
2762 | notit, notit->stream); | |
2763 | return; | |
2764 | } | |
2765 | ||
2766 | end: | |
2767 | *notification = ret; | |
2768 | } | |
2769 | ||
2770 | static | |
2771 | void notify_end_of_stream(struct bt_notif_iter *notit, | |
2772 | struct bt_notification **notification) | |
2773 | { | |
2774 | struct bt_notification *ret; | |
2775 | ||
2776 | if (!notit->stream) { | |
2777 | BT_LOGE("Cannot create stream for stream notification: " | |
2778 | "notit-addr=%p", notit); | |
2779 | return; | |
2780 | } | |
2781 | ||
f7c3ac09 PP |
2782 | BT_ASSERT(notit->graph); |
2783 | ret = bt_notification_stream_end_create(notit->graph, notit->stream); | |
6ff151ad PP |
2784 | if (!ret) { |
2785 | BT_LOGE("Cannot create stream beginning notification: " | |
2786 | "notit-addr=%p, stream-addr=%p", | |
2787 | notit, notit->stream); | |
2788 | return; | |
2789 | } | |
2790 | *notification = ret; | |
2791 | } | |
2792 | ||
78586d8a | 2793 | static |
839d52a5 | 2794 | void notify_new_packet(struct bt_notif_iter *notit, |
78586d8a | 2795 | struct bt_notification **notification) |
e98a2d6e | 2796 | { |
a6918753 PP |
2797 | int ret; |
2798 | enum bt_notif_iter_status status; | |
2799 | struct bt_notification *notif = NULL; | |
e98a2d6e | 2800 | |
a6918753 PP |
2801 | status = set_current_packet(notit); |
2802 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
2803 | goto end; | |
e98a2d6e PP |
2804 | } |
2805 | ||
a6918753 PP |
2806 | BT_ASSERT(notit->packet); |
2807 | ||
2808 | if (notit->packet_header_field) { | |
2809 | ret = bt_packet_move_header(notit->packet, | |
2810 | notit->packet_header_field); | |
2811 | if (ret) { | |
2812 | goto end; | |
2813 | } | |
2814 | ||
2815 | notit->packet_header_field = NULL; | |
2816 | ||
2817 | /* | |
2818 | * At this point notit->dscopes.trace_packet_header has | |
2819 | * the same value as the packet header field within | |
2820 | * notit->packet. | |
2821 | */ | |
2822 | BT_ASSERT(bt_packet_borrow_header(notit->packet) == | |
2823 | notit->dscopes.trace_packet_header); | |
2824 | } | |
2825 | ||
2826 | if (notit->packet_context_field) { | |
2827 | ret = bt_packet_move_context(notit->packet, | |
2828 | notit->packet_context_field); | |
2829 | if (ret) { | |
2830 | goto end; | |
2831 | } | |
2832 | ||
2833 | notit->packet_context_field = NULL; | |
2834 | ||
2835 | /* | |
2836 | * At this point notit->dscopes.trace_packet_header has | |
2837 | * the same value as the packet header field within | |
2838 | * notit->packet. | |
2839 | */ | |
2840 | BT_ASSERT(bt_packet_borrow_context(notit->packet) == | |
2841 | notit->dscopes.stream_packet_context); | |
2842 | } | |
2843 | ||
f7c3ac09 PP |
2844 | BT_ASSERT(notit->graph); |
2845 | notif = bt_notification_packet_begin_create(notit->graph, | |
2846 | notit->packet); | |
a6918753 | 2847 | if (!notif) { |
fdf0e7a0 PP |
2848 | BT_LOGE("Cannot create packet beginning notification: " |
2849 | "notit-addr=%p, packet-addr=%p", | |
2850 | notit, notit->packet); | |
78586d8a JG |
2851 | return; |
2852 | } | |
a6918753 PP |
2853 | |
2854 | end: | |
2855 | *notification = notif; | |
e98a2d6e PP |
2856 | } |
2857 | ||
78586d8a | 2858 | static |
839d52a5 | 2859 | void notify_end_of_packet(struct bt_notif_iter *notit, |
78586d8a | 2860 | struct bt_notification **notification) |
e98a2d6e | 2861 | { |
a6918753 | 2862 | struct bt_notification *notif; |
e98a2d6e | 2863 | |
e98a2d6e | 2864 | if (!notit->packet) { |
78586d8a | 2865 | return; |
e98a2d6e PP |
2866 | } |
2867 | ||
f7c3ac09 PP |
2868 | BT_ASSERT(notit->graph); |
2869 | notif = bt_notification_packet_end_create(notit->graph, notit->packet); | |
a6918753 | 2870 | if (!notif) { |
fdf0e7a0 PP |
2871 | BT_LOGE("Cannot create packet end notification: " |
2872 | "notit-addr=%p, packet-addr=%p", | |
2873 | notit, notit->packet); | |
78586d8a JG |
2874 | return; |
2875 | } | |
e98a2d6e | 2876 | |
a6918753 PP |
2877 | BT_PUT(notit->packet); |
2878 | *notification = notif; | |
e98a2d6e PP |
2879 | } |
2880 | ||
5f870343 | 2881 | static |
839d52a5 | 2882 | void init_trace_field_path_cache(struct bt_trace *trace, |
5f870343 JG |
2883 | struct trace_field_path_cache *trace_field_path_cache) |
2884 | { | |
2885 | int stream_id = -1; | |
2886 | int stream_instance_id = -1; | |
2887 | int i, count; | |
839d52a5 | 2888 | struct bt_field_type *packet_header = NULL; |
5f870343 | 2889 | |
b8418c69 | 2890 | packet_header = bt_trace_borrow_packet_header_field_type(trace); |
5f870343 JG |
2891 | if (!packet_header) { |
2892 | goto end; | |
2893 | } | |
2894 | ||
839d52a5 | 2895 | if (!bt_field_type_is_structure(packet_header)) { |
5f870343 JG |
2896 | goto end; |
2897 | } | |
2898 | ||
839d52a5 | 2899 | count = bt_field_type_structure_get_field_count(packet_header); |
8b45963b | 2900 | BT_ASSERT(count >= 0); |
5f870343 JG |
2901 | |
2902 | for (i = 0; (i < count && (stream_id == -1 || stream_instance_id == -1)); i++) { | |
2903 | int ret; | |
2904 | const char *field_name; | |
2905 | ||
b8418c69 PP |
2906 | ret = bt_field_type_structure_borrow_field_by_index( |
2907 | packet_header, &field_name, NULL, i); | |
5f870343 | 2908 | if (ret) { |
fdf0e7a0 PP |
2909 | BT_LOGE("Cannot get structure field's field: " |
2910 | "field-addr=%p, index=%d", | |
2911 | packet_header, i); | |
5f870343 JG |
2912 | goto end; |
2913 | } | |
2914 | ||
2915 | if (stream_id == -1 && !strcmp(field_name, "stream_id")) { | |
2916 | stream_id = i; | |
2917 | } else if (stream_instance_id == -1 && | |
2918 | !strcmp(field_name, "stream_instance_id")) { | |
2919 | stream_instance_id = i; | |
2920 | } | |
2921 | } | |
fdf0e7a0 | 2922 | |
5f870343 JG |
2923 | end: |
2924 | trace_field_path_cache->stream_id = stream_id; | |
2925 | trace_field_path_cache->stream_instance_id = stream_instance_id; | |
5f870343 JG |
2926 | } |
2927 | ||
c44c3e70 | 2928 | BT_HIDDEN |
839d52a5 | 2929 | struct bt_notif_iter *bt_notif_iter_create(struct bt_trace *trace, |
e98a2d6e | 2930 | size_t max_request_sz, |
839d52a5 | 2931 | struct bt_notif_iter_medium_ops medops, void *data) |
e98a2d6e | 2932 | { |
839d52a5 PP |
2933 | struct bt_notif_iter *notit = NULL; |
2934 | struct bt_btr_cbs cbs = { | |
e98a2d6e PP |
2935 | .types = { |
2936 | .signed_int = btr_signed_int_cb, | |
2937 | .unsigned_int = btr_unsigned_int_cb, | |
2938 | .floating_point = btr_floating_point_cb, | |
2939 | .string_begin = btr_string_begin_cb, | |
2940 | .string = btr_string_cb, | |
2941 | .string_end = btr_string_end_cb, | |
2942 | .compound_begin = btr_compound_begin_cb, | |
2943 | .compound_end = btr_compound_end_cb, | |
2944 | }, | |
2945 | .query = { | |
2946 | .get_sequence_length = btr_get_sequence_length_cb, | |
4feda515 | 2947 | .borrow_variant_field_type = btr_borrow_variant_field_type_cb, |
e98a2d6e PP |
2948 | }, |
2949 | }; | |
2950 | ||
8b45963b PP |
2951 | BT_ASSERT(trace); |
2952 | BT_ASSERT(medops.request_bytes); | |
a6918753 | 2953 | BT_ASSERT(medops.borrow_stream); |
fdf0e7a0 PP |
2954 | BT_LOGD("Creating CTF plugin notification iterator: " |
2955 | "trace-addr=%p, trace-name=\"%s\", max-request-size=%zu, " | |
2956 | "data=%p", | |
839d52a5 PP |
2957 | trace, bt_trace_get_name(trace), max_request_sz, data); |
2958 | notit = g_new0(struct bt_notif_iter, 1); | |
e98a2d6e | 2959 | if (!notit) { |
fdf0e7a0 | 2960 | BT_LOGE_STR("Failed to allocate one CTF plugin notification iterator."); |
e98a2d6e PP |
2961 | goto end; |
2962 | } | |
c44c3e70 | 2963 | notit->clock_states = g_hash_table_new_full(g_direct_hash, |
b8418c69 | 2964 | g_direct_equal, NULL, g_free); |
c44c3e70 | 2965 | if (!notit->clock_states) { |
fdf0e7a0 | 2966 | BT_LOGE_STR("Failed to allocate a GHashTable."); |
c44c3e70 JG |
2967 | goto error; |
2968 | } | |
b8418c69 | 2969 | notit->meta.trace = trace; |
e98a2d6e PP |
2970 | notit->medium.medops = medops; |
2971 | notit->medium.max_request_sz = max_request_sz; | |
2972 | notit->medium.data = data; | |
e98a2d6e PP |
2973 | notit->stack = stack_new(notit); |
2974 | if (!notit->stack) { | |
fdf0e7a0 | 2975 | BT_LOGE_STR("Failed to create field stack."); |
c44c3e70 | 2976 | goto error; |
e98a2d6e PP |
2977 | } |
2978 | ||
839d52a5 | 2979 | notit->btr = bt_btr_create(cbs, notit); |
e98a2d6e | 2980 | if (!notit->btr) { |
fdf0e7a0 | 2981 | BT_LOGE_STR("Failed to create binary type reader (BTR)."); |
c44c3e70 | 2982 | goto error; |
e98a2d6e PP |
2983 | } |
2984 | ||
839d52a5 | 2985 | bt_notif_iter_reset(notit); |
5f870343 JG |
2986 | init_trace_field_path_cache(trace, ¬it->trace_field_path_cache); |
2987 | notit->sc_field_path_caches = g_hash_table_new_full(g_direct_hash, | |
b8418c69 | 2988 | g_direct_equal, NULL, g_free); |
5f870343 | 2989 | if (!notit->sc_field_path_caches) { |
fdf0e7a0 | 2990 | BT_LOGE_STR("Failed to allocate a GHashTable."); |
5f870343 JG |
2991 | goto error; |
2992 | } | |
2993 | ||
2994 | notit->field_overrides = g_hash_table_new_full(g_direct_hash, | |
b8418c69 | 2995 | g_direct_equal, NULL, g_free); |
5f870343 | 2996 | if (!notit->field_overrides) { |
fdf0e7a0 | 2997 | BT_LOGE_STR("Failed to allocate a GHashTable."); |
5f870343 JG |
2998 | goto error; |
2999 | } | |
3000 | ||
fdf0e7a0 PP |
3001 | BT_LOGD("Created CTF plugin notification iterator: " |
3002 | "trace-addr=%p, trace-name=\"%s\", max-request-size=%zu, " | |
3003 | "data=%p, notit-addr=%p", | |
839d52a5 | 3004 | trace, bt_trace_get_name(trace), max_request_sz, data, |
fdf0e7a0 | 3005 | notit); |
bb230c9b | 3006 | notit->cur_packet_offset = 0; |
fdf0e7a0 | 3007 | |
e98a2d6e PP |
3008 | end: |
3009 | return notit; | |
fdf0e7a0 | 3010 | |
c44c3e70 | 3011 | error: |
839d52a5 | 3012 | bt_notif_iter_destroy(notit); |
c44c3e70 JG |
3013 | notit = NULL; |
3014 | goto end; | |
e98a2d6e PP |
3015 | } |
3016 | ||
839d52a5 | 3017 | void bt_notif_iter_destroy(struct bt_notif_iter *notit) |
e98a2d6e | 3018 | { |
e98a2d6e | 3019 | BT_PUT(notit->packet); |
5184a1d6 | 3020 | BT_PUT(notit->stream); |
a6918753 PP |
3021 | BT_PUT(notit->meta.cc_prio_map); |
3022 | release_all_dscopes(notit); | |
e98a2d6e | 3023 | |
fdf0e7a0 PP |
3024 | BT_LOGD("Destroying CTF plugin notification iterator: addr=%p", notit); |
3025 | ||
e98a2d6e | 3026 | if (notit->stack) { |
fdf0e7a0 | 3027 | BT_LOGD_STR("Destroying field stack."); |
e98a2d6e PP |
3028 | stack_destroy(notit->stack); |
3029 | } | |
3030 | ||
3031 | if (notit->btr) { | |
fdf0e7a0 | 3032 | BT_LOGD("Destroying BTR: btr-addr=%p", notit->btr); |
839d52a5 | 3033 | bt_btr_destroy(notit->btr); |
e98a2d6e PP |
3034 | } |
3035 | ||
c44c3e70 JG |
3036 | if (notit->clock_states) { |
3037 | g_hash_table_destroy(notit->clock_states); | |
3038 | } | |
5f870343 JG |
3039 | |
3040 | if (notit->sc_field_path_caches) { | |
3041 | g_hash_table_destroy(notit->sc_field_path_caches); | |
3042 | } | |
3043 | ||
3044 | if (notit->field_overrides) { | |
3045 | g_hash_table_destroy(notit->field_overrides); | |
3046 | } | |
fdf0e7a0 | 3047 | |
e98a2d6e PP |
3048 | g_free(notit); |
3049 | } | |
3050 | ||
839d52a5 PP |
3051 | enum bt_notif_iter_status bt_notif_iter_get_next_notification( |
3052 | struct bt_notif_iter *notit, | |
0982a26d | 3053 | struct bt_clock_class_priority_map *cc_prio_map, |
f7c3ac09 | 3054 | struct bt_graph *graph, |
78586d8a | 3055 | struct bt_notification **notification) |
e98a2d6e | 3056 | { |
a6918753 | 3057 | int ret; |
839d52a5 | 3058 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e | 3059 | |
8b45963b PP |
3060 | BT_ASSERT(notit); |
3061 | BT_ASSERT(notification); | |
e98a2d6e | 3062 | |
f7c3ac09 PP |
3063 | if (notit->state == STATE_DONE) { |
3064 | status = BT_NOTIF_ITER_STATUS_EOF; | |
3065 | goto end; | |
3066 | } | |
3067 | ||
a6918753 PP |
3068 | if (cc_prio_map != notit->meta.cc_prio_map) { |
3069 | bt_put(notit->meta.cc_prio_map); | |
3070 | notit->meta.cc_prio_map = bt_get(cc_prio_map); | |
3071 | } | |
3072 | ||
f7c3ac09 | 3073 | notit->graph = graph; |
6ff151ad | 3074 | |
fdf0e7a0 PP |
3075 | BT_LOGV("Getting next notification: notit-addr=%p, cc-prio-map-addr=%p", |
3076 | notit, cc_prio_map); | |
3077 | ||
e98a2d6e PP |
3078 | while (true) { |
3079 | status = handle_state(notit); | |
839d52a5 PP |
3080 | if (status == BT_NOTIF_ITER_STATUS_AGAIN) { |
3081 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_AGAIN."); | |
7cdc2bab MD |
3082 | goto end; |
3083 | } | |
a6918753 | 3084 | |
839d52a5 PP |
3085 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
3086 | if (status == BT_NOTIF_ITER_STATUS_EOF) { | |
6ff151ad PP |
3087 | enum state next_state = notit->state; |
3088 | ||
839d52a5 | 3089 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_EOF."); |
6ff151ad PP |
3090 | |
3091 | if (notit->packet) { | |
a6918753 PP |
3092 | notify_end_of_packet(notit, |
3093 | notification); | |
6ff151ad | 3094 | } else { |
a6918753 PP |
3095 | notify_end_of_stream(notit, |
3096 | notification); | |
6ff151ad PP |
3097 | next_state = STATE_DONE; |
3098 | } | |
3099 | ||
3100 | if (!*notification) { | |
3101 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
3102 | goto end; | |
3103 | } | |
3104 | ||
3105 | status = BT_NOTIF_ITER_STATUS_OK; | |
3106 | notit->state = next_state; | |
e98a2d6e | 3107 | } else { |
fdf0e7a0 PP |
3108 | BT_LOGW("Cannot handle state: " |
3109 | "notit-addr=%p, state=%s", | |
3110 | notit, state_string(notit->state)); | |
e98a2d6e | 3111 | } |
a6918753 | 3112 | |
e98a2d6e PP |
3113 | goto end; |
3114 | } | |
3115 | ||
3116 | switch (notit->state) { | |
6ff151ad PP |
3117 | case STATE_EMIT_NOTIF_NEW_STREAM: |
3118 | /* notify_new_stream() logs errors */ | |
3119 | notify_new_stream(notit, notification); | |
3120 | if (!*notification) { | |
3121 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
3122 | } | |
3123 | notit->stream_begin_emitted = true; | |
3124 | goto end; | |
e98a2d6e | 3125 | case STATE_EMIT_NOTIF_NEW_PACKET: |
fdf0e7a0 | 3126 | /* notify_new_packet() logs errors */ |
e98a2d6e PP |
3127 | notify_new_packet(notit, notification); |
3128 | if (!*notification) { | |
839d52a5 | 3129 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e | 3130 | } |
a6918753 | 3131 | |
e98a2d6e PP |
3132 | goto end; |
3133 | case STATE_EMIT_NOTIF_EVENT: | |
a6918753 PP |
3134 | BT_ASSERT(notit->event_notif); |
3135 | ret = set_event_clocks(notit); | |
3136 | if (ret) { | |
839d52a5 | 3137 | status = BT_NOTIF_ITER_STATUS_ERROR; |
a6918753 | 3138 | goto end; |
e98a2d6e | 3139 | } |
a6918753 | 3140 | |
3fd7b79d PP |
3141 | *notification = notit->event_notif; |
3142 | notit->event_notif = NULL; | |
e98a2d6e PP |
3143 | goto end; |
3144 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
5f870343 JG |
3145 | /* Update clock with timestamp_end field. */ |
3146 | if (notit->cur_timestamp_end) { | |
839d52a5 | 3147 | enum bt_btr_status btr_status; |
5f870343 | 3148 | |
f45bfe88 PP |
3149 | btr_status = update_clock(notit, |
3150 | notit->cur_timestamp_end); | |
839d52a5 | 3151 | if (btr_status != BT_BTR_STATUS_OK) { |
fdf0e7a0 PP |
3152 | BT_LOGW("Cannot update stream's clock value: " |
3153 | "notit-addr=%p", notit); | |
839d52a5 | 3154 | status = BT_NOTIF_ITER_STATUS_ERROR; |
5f870343 JG |
3155 | goto end; |
3156 | } | |
3157 | } | |
3158 | ||
fdf0e7a0 | 3159 | /* notify_end_of_packet() logs errors */ |
e98a2d6e PP |
3160 | notify_end_of_packet(notit, notification); |
3161 | if (!*notification) { | |
839d52a5 | 3162 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e | 3163 | } |
a6918753 | 3164 | |
e98a2d6e PP |
3165 | goto end; |
3166 | default: | |
3167 | /* Non-emitting state: continue */ | |
3168 | break; | |
3169 | } | |
3170 | } | |
3171 | ||
3172 | end: | |
3173 | return status; | |
3174 | } | |
87187cbf PP |
3175 | |
3176 | BT_HIDDEN | |
a6918753 | 3177 | enum bt_notif_iter_status bt_notif_iter_borrow_packet_header_context_fields( |
839d52a5 PP |
3178 | struct bt_notif_iter *notit, |
3179 | struct bt_field **packet_header_field, | |
3180 | struct bt_field **packet_context_field) | |
87187cbf | 3181 | { |
bb230c9b | 3182 | int ret; |
839d52a5 | 3183 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
87187cbf | 3184 | |
8b45963b | 3185 | BT_ASSERT(notit); |
87187cbf PP |
3186 | |
3187 | if (notit->state == STATE_EMIT_NOTIF_NEW_PACKET) { | |
3188 | /* We're already there */ | |
3189 | goto set_fields; | |
3190 | } | |
3191 | ||
3192 | while (true) { | |
3193 | status = handle_state(notit); | |
839d52a5 PP |
3194 | if (status == BT_NOTIF_ITER_STATUS_AGAIN) { |
3195 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_AGAIN."); | |
87187cbf PP |
3196 | goto end; |
3197 | } | |
839d52a5 PP |
3198 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
3199 | if (status == BT_NOTIF_ITER_STATUS_EOF) { | |
3200 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_EOF."); | |
87187cbf | 3201 | } else { |
fdf0e7a0 PP |
3202 | BT_LOGW("Cannot handle state: " |
3203 | "notit-addr=%p, state=%s", | |
3204 | notit, state_string(notit->state)); | |
87187cbf PP |
3205 | } |
3206 | goto end; | |
3207 | } | |
3208 | ||
3209 | switch (notit->state) { | |
3210 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
3211 | /* | |
3212 | * Packet header and context fields are | |
3213 | * potentially decoded (or they don't exist). | |
3214 | */ | |
3215 | goto set_fields; | |
3216 | case STATE_INIT: | |
6ff151ad | 3217 | case STATE_EMIT_NOTIF_NEW_STREAM: |
87187cbf PP |
3218 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: |
3219 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
3220 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
3221 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
3222 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
3223 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
3224 | /* Non-emitting state: continue */ | |
3225 | break; | |
3226 | default: | |
3227 | /* | |
3228 | * We should never get past the | |
3229 | * STATE_EMIT_NOTIF_NEW_PACKET state. | |
3230 | */ | |
fdf0e7a0 PP |
3231 | BT_LOGF("Unexpected state: notit-addr=%p, state=%s", |
3232 | notit, state_string(notit->state)); | |
0fbb9a9f | 3233 | abort(); |
87187cbf PP |
3234 | } |
3235 | } | |
3236 | ||
3237 | set_fields: | |
a6918753 PP |
3238 | ret = set_current_packet_content_sizes(notit); |
3239 | if (ret) { | |
3240 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
3241 | goto end; | |
3242 | } | |
3243 | ||
87187cbf | 3244 | if (packet_header_field) { |
a6918753 | 3245 | *packet_header_field = notit->dscopes.trace_packet_header; |
87187cbf PP |
3246 | } |
3247 | ||
3248 | if (packet_context_field) { | |
a6918753 | 3249 | *packet_context_field = notit->dscopes.stream_packet_context; |
87187cbf PP |
3250 | } |
3251 | ||
3252 | end: | |
3253 | return status; | |
3254 | } | |
55fa6491 PP |
3255 | |
3256 | BT_HIDDEN | |
839d52a5 | 3257 | void bt_notif_iter_set_medops_data(struct bt_notif_iter *notit, |
55fa6491 PP |
3258 | void *medops_data) |
3259 | { | |
8b45963b | 3260 | BT_ASSERT(notit); |
55fa6491 PP |
3261 | notit->medium.data = medops_data; |
3262 | } | |
bb230c9b JG |
3263 | |
3264 | BT_HIDDEN | |
839d52a5 PP |
3265 | enum bt_notif_iter_status bt_notif_iter_seek( |
3266 | struct bt_notif_iter *notit, off_t offset) | |
bb230c9b | 3267 | { |
839d52a5 PP |
3268 | enum bt_notif_iter_status ret = BT_NOTIF_ITER_STATUS_OK; |
3269 | enum bt_notif_iter_medium_status medium_status; | |
bb230c9b | 3270 | |
8b45963b | 3271 | BT_ASSERT(notit); |
bb230c9b JG |
3272 | if (offset < 0) { |
3273 | BT_LOGE("Cannot seek to negative offset: offset=%jd", offset); | |
839d52a5 | 3274 | ret = BT_NOTIF_ITER_STATUS_INVAL; |
bb230c9b JG |
3275 | goto end; |
3276 | } | |
3277 | ||
3278 | if (!notit->medium.medops.seek) { | |
839d52a5 | 3279 | ret = BT_NOTIF_ITER_STATUS_UNSUPPORTED; |
bb230c9b JG |
3280 | BT_LOGD("Aborting seek as the iterator's underlying media does not implement seek support."); |
3281 | goto end; | |
3282 | } | |
3283 | ||
3284 | medium_status = notit->medium.medops.seek( | |
839d52a5 | 3285 | BT_NOTIF_ITER_SEEK_WHENCE_SET, offset, |
bb230c9b | 3286 | notit->medium.data); |
839d52a5 PP |
3287 | if (medium_status != BT_NOTIF_ITER_MEDIUM_STATUS_OK) { |
3288 | if (medium_status == BT_NOTIF_ITER_MEDIUM_STATUS_EOF) { | |
3289 | ret = BT_NOTIF_ITER_STATUS_EOF; | |
bb230c9b | 3290 | } else { |
839d52a5 | 3291 | ret = BT_NOTIF_ITER_STATUS_ERROR; |
bb230c9b JG |
3292 | goto end; |
3293 | } | |
3294 | } | |
3295 | ||
839d52a5 | 3296 | bt_notif_iter_reset(notit); |
bb230c9b JG |
3297 | notit->cur_packet_offset = offset; |
3298 | end: | |
3299 | return ret; | |
3300 | } | |
3301 | ||
3302 | BT_HIDDEN | |
839d52a5 PP |
3303 | off_t bt_notif_iter_get_current_packet_offset( |
3304 | struct bt_notif_iter *notit) | |
bb230c9b | 3305 | { |
8b45963b | 3306 | BT_ASSERT(notit); |
bb230c9b JG |
3307 | return notit->cur_packet_offset; |
3308 | } | |
3309 | ||
3310 | BT_HIDDEN | |
839d52a5 PP |
3311 | off_t bt_notif_iter_get_current_packet_size( |
3312 | struct bt_notif_iter *notit) | |
bb230c9b | 3313 | { |
8b45963b | 3314 | BT_ASSERT(notit); |
bb230c9b JG |
3315 | return notit->cur_packet_size; |
3316 | } |