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> | |
1d2f35fd | 34 | #include <babeltrace/assert-internal.h> |
e98a2d6e | 35 | #include <string.h> |
9d408fca | 36 | #include <babeltrace/babeltrace.h> |
d6b8c7f1 | 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 | |
50842bdc | 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 | * | |
a7252d9c | 57 | * Field is borrowed. |
e98a2d6e | 58 | */ |
50842bdc | 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 { | |
8b954936 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, | |
9412b331 | 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, | |
9412b331 | 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 { | |
50842bdc PP |
128 | enum bt_btr_status (* func)(void *value, |
129 | struct bt_field_type *type, void *data); | |
5f870343 JG |
130 | void *data; |
131 | }; | |
132 | ||
fb8afeef PP |
133 | /* Clock value: clock class and raw value */ |
134 | struct clock_value { | |
135 | struct bt_clock_class *clock_class; /* Weak */ | |
136 | uint64_t raw_value; | |
137 | }; | |
138 | ||
e98a2d6e | 139 | /* CTF notification iterator */ |
50842bdc | 140 | struct bt_notif_iter { |
e98a2d6e PP |
141 | /* Visit stack */ |
142 | struct stack *stack; | |
143 | ||
8eda4bcb PP |
144 | /* Current notification iterator to create notifications (weak) */ |
145 | struct bt_private_connection_private_notification_iterator *notif_iter; | |
ecb2b2fe | 146 | |
e98a2d6e PP |
147 | /* |
148 | * Current dynamic scope field pointer. | |
149 | * | |
a7252d9c PP |
150 | * This is set by read_dscope_begin_state() and contains the |
151 | * value of one of the pointers in `dscopes` below. | |
e98a2d6e | 152 | */ |
a7252d9c | 153 | struct bt_field *cur_dscope_field; |
e98a2d6e PP |
154 | |
155 | /* Trace and classes (owned by this) */ | |
156 | struct { | |
50842bdc PP |
157 | struct bt_trace *trace; |
158 | struct bt_stream_class *stream_class; | |
159 | struct bt_event_class *event_class; | |
e98a2d6e PP |
160 | } meta; |
161 | ||
a7252d9c PP |
162 | /* Current packet header field wrapper (NULL if not created yet) */ |
163 | struct bt_packet_header_field *packet_header_field; | |
164 | ||
165 | /* Current packet header field wrapper (NULL if not created yet) */ | |
166 | struct bt_packet_context_field *packet_context_field; | |
167 | ||
168 | /* Current event header field (NULL if not created yet) */ | |
169 | struct bt_event_header_field *event_header_field; | |
170 | ||
e98a2d6e | 171 | /* Current packet (NULL if not created yet) */ |
50842bdc | 172 | struct bt_packet *packet; |
e98a2d6e | 173 | |
af87daef | 174 | /* Current stream (NULL if not set yet) */ |
50842bdc | 175 | struct bt_stream *stream; |
af87daef | 176 | |
a7252d9c PP |
177 | /* Current event (NULL if not created yet) */ |
178 | struct bt_event *event; | |
179 | ||
180 | /* Current event notification (NULL if not created yet) */ | |
181 | struct bt_notification *event_notif; | |
182 | ||
5f870343 | 183 | /* |
a7252d9c PP |
184 | * Current `timestamp_end` field (to consider before switching |
185 | * packets). If it's set, it's a field which is within | |
186 | * `dscopes.stream_packet_context` below, which is in `packet` | |
187 | * above. | |
5f870343 | 188 | */ |
50842bdc | 189 | struct bt_field *cur_timestamp_end; |
5f870343 | 190 | |
e98a2d6e PP |
191 | /* Database of current dynamic scopes (owned by this) */ |
192 | struct { | |
50842bdc PP |
193 | struct bt_field *trace_packet_header; |
194 | struct bt_field *stream_packet_context; | |
195 | struct bt_field *stream_event_header; | |
196 | struct bt_field *stream_event_context; | |
197 | struct bt_field *event_context; | |
198 | struct bt_field *event_payload; | |
e98a2d6e PP |
199 | } dscopes; |
200 | ||
5f870343 JG |
201 | /* |
202 | * Special field overrides. | |
203 | * | |
204 | * Overrides are used to implement the behaviours of special fields such | |
205 | * as "timestamp_end" (which must be ignored until the end of the | |
206 | * packet), "id" (event id) which can be present multiple times and must | |
207 | * be updated multiple time. | |
208 | * | |
209 | * This should be used to implement the behaviour of integer fields | |
210 | * mapped to clocks and other "tagged" fields (in CTF 2). | |
211 | * | |
50842bdc | 212 | * bt_field_type to struct field_cb_override |
5f870343 JG |
213 | */ |
214 | GHashTable *field_overrides; | |
215 | ||
e98a2d6e PP |
216 | /* Current state */ |
217 | enum state state; | |
218 | ||
2cf1d51e | 219 | /* Current medium buffer data */ |
e98a2d6e PP |
220 | struct { |
221 | /* Last address provided by medium */ | |
222 | const uint8_t *addr; | |
223 | ||
224 | /* Buffer size provided by medium (bytes) */ | |
225 | size_t sz; | |
226 | ||
227 | /* Offset within whole packet of addr (bits) */ | |
228 | size_t packet_offset; | |
229 | ||
230 | /* Current position from addr (bits) */ | |
231 | size_t at; | |
174e773b PP |
232 | |
233 | /* Position of the last event header from addr (bits) */ | |
234 | size_t last_eh_at; | |
e98a2d6e PP |
235 | } buf; |
236 | ||
237 | /* Binary type reader */ | |
50842bdc | 238 | struct bt_btr *btr; |
e98a2d6e | 239 | |
2cf1d51e | 240 | /* Current medium data */ |
e98a2d6e | 241 | struct { |
50842bdc | 242 | struct bt_notif_iter_medium_ops medops; |
e98a2d6e PP |
243 | size_t max_request_sz; |
244 | void *data; | |
245 | } medium; | |
246 | ||
9412b331 PP |
247 | /* Stream beginning was emitted */ |
248 | bool stream_begin_emitted; | |
249 | ||
e98a2d6e | 250 | /* Current packet size (bits) (-1 if unknown) */ |
e7a4393b | 251 | int64_t cur_packet_size; |
e98a2d6e PP |
252 | |
253 | /* Current content size (bits) (-1 if unknown) */ | |
e7a4393b | 254 | int64_t cur_content_size; |
c44c3e70 | 255 | |
fb8afeef PP |
256 | /* Current packet default beginning and end clock values */ |
257 | struct clock_value cur_packet_begin_cv; | |
258 | struct clock_value cur_packet_end_cv; | |
259 | ||
9e0c8dbb JG |
260 | /* |
261 | * Offset, in the underlying media, of the current packet's start | |
262 | * (-1 if unknown). | |
263 | */ | |
264 | off_t cur_packet_offset; | |
265 | ||
50842bdc | 266 | /* bt_clock_class to uint64_t. */ |
c44c3e70 | 267 | GHashTable *clock_states; |
5f870343 JG |
268 | |
269 | /* | |
270 | * Cache of the trace-constant field paths (event header type) | |
271 | * associated to the current trace. | |
272 | */ | |
273 | struct trace_field_path_cache trace_field_path_cache; | |
274 | ||
275 | /* | |
276 | * Field path cache associated with the current stream class. | |
277 | * Ownership of this structure belongs to the field_path_caches HT. | |
278 | */ | |
279 | struct stream_class_field_path_cache *cur_sc_field_path_cache; | |
280 | ||
50842bdc | 281 | /* bt_stream_class to struct stream_class_field_path_cache. */ |
5f870343 | 282 | GHashTable *sc_field_path_caches; |
e98a2d6e PP |
283 | }; |
284 | ||
fdf0e7a0 PP |
285 | static inline |
286 | const char *state_string(enum state state) | |
287 | { | |
288 | switch (state) { | |
289 | case STATE_INIT: | |
290 | return "STATE_INIT"; | |
291 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
292 | return "STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN"; | |
293 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
294 | return "STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE"; | |
295 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
296 | return "STATE_AFTER_TRACE_PACKET_HEADER"; | |
297 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
298 | return "STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN"; | |
299 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
300 | return "STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE"; | |
301 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
302 | return "STATE_AFTER_STREAM_PACKET_CONTEXT"; | |
303 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
304 | return "STATE_EMIT_NOTIF_NEW_PACKET"; | |
9412b331 PP |
305 | case STATE_EMIT_NOTIF_NEW_STREAM: |
306 | return "STATE_EMIT_NOTIF_NEW_STREAM"; | |
fdf0e7a0 PP |
307 | case STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN: |
308 | return "STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN"; | |
309 | case STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE: | |
310 | return "STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE"; | |
311 | case STATE_AFTER_STREAM_EVENT_HEADER: | |
312 | return "STATE_AFTER_STREAM_EVENT_HEADER"; | |
313 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN: | |
314 | return "STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN"; | |
315 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE: | |
316 | return "STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE"; | |
317 | case STATE_DSCOPE_EVENT_CONTEXT_BEGIN: | |
318 | return "STATE_DSCOPE_EVENT_CONTEXT_BEGIN"; | |
319 | case STATE_DSCOPE_EVENT_CONTEXT_CONTINUE: | |
320 | return "STATE_DSCOPE_EVENT_CONTEXT_CONTINUE"; | |
321 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: | |
322 | return "STATE_DSCOPE_EVENT_PAYLOAD_BEGIN"; | |
323 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
324 | return "STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE"; | |
325 | case STATE_EMIT_NOTIF_EVENT: | |
326 | return "STATE_EMIT_NOTIF_EVENT"; | |
327 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
328 | return "STATE_EMIT_NOTIF_END_OF_PACKET"; | |
9412b331 PP |
329 | case STATE_DONE: |
330 | return "STATE_DONE"; | |
fdf0e7a0 PP |
331 | case STATE_SKIP_PACKET_PADDING: |
332 | return "STATE_SKIP_PACKET_PADDING"; | |
333 | default: | |
334 | return "(unknown)"; | |
335 | } | |
336 | } | |
337 | ||
2cf1d51e | 338 | static |
50842bdc | 339 | int bt_notif_iter_switch_packet(struct bt_notif_iter *notit); |
2cf1d51e | 340 | |
5f870343 | 341 | static |
50842bdc PP |
342 | enum bt_btr_status btr_timestamp_end_cb(void *value, |
343 | struct bt_field_type *type, void *data); | |
5f870343 | 344 | |
e98a2d6e | 345 | static |
50842bdc | 346 | struct stack *stack_new(struct bt_notif_iter *notit) |
e98a2d6e PP |
347 | { |
348 | struct stack *stack = NULL; | |
349 | ||
350 | stack = g_new0(struct stack, 1); | |
351 | if (!stack) { | |
fdf0e7a0 | 352 | BT_LOGE_STR("Failed to allocate one stack."); |
e98a2d6e PP |
353 | goto error; |
354 | } | |
355 | ||
8b954936 | 356 | stack->entries = g_array_new(FALSE, TRUE, sizeof(struct stack_entry)); |
e98a2d6e | 357 | if (!stack->entries) { |
8b954936 | 358 | BT_LOGE_STR("Failed to allocate a GArray."); |
e98a2d6e PP |
359 | goto error; |
360 | } | |
361 | ||
fdf0e7a0 | 362 | BT_LOGD("Created stack: notit-addr=%p, stack-addr=%p", notit, stack); |
e98a2d6e | 363 | return stack; |
fdf0e7a0 | 364 | |
e98a2d6e PP |
365 | error: |
366 | g_free(stack); | |
e98a2d6e PP |
367 | return NULL; |
368 | } | |
369 | ||
370 | static | |
371 | void stack_destroy(struct stack *stack) | |
372 | { | |
1d2f35fd | 373 | BT_ASSERT(stack); |
fdf0e7a0 | 374 | BT_LOGD("Destroying stack: addr=%p", stack); |
8b954936 PP |
375 | |
376 | if (stack->entries) { | |
377 | g_array_free(stack->entries, TRUE); | |
378 | } | |
379 | ||
e98a2d6e PP |
380 | g_free(stack); |
381 | } | |
382 | ||
383 | static | |
50842bdc | 384 | int stack_push(struct stack *stack, struct bt_field *base) |
e98a2d6e | 385 | { |
e98a2d6e | 386 | struct stack_entry *entry; |
e98a2d6e | 387 | |
1d2f35fd PP |
388 | BT_ASSERT(stack); |
389 | BT_ASSERT(base); | |
fdf0e7a0 | 390 | BT_LOGV("Pushing base field on stack: stack-addr=%p, " |
8b954936 PP |
391 | "stack-size-before=%zu, stack-size-after=%zu", |
392 | stack, stack->size, stack->size + 1); | |
393 | ||
394 | if (stack->entries->len == stack->size) { | |
395 | g_array_set_size(stack->entries, stack->size + 1); | |
e98a2d6e PP |
396 | } |
397 | ||
8b954936 | 398 | entry = &g_array_index(stack->entries, struct stack_entry, stack->size); |
a7252d9c | 399 | entry->base = base; |
8b954936 PP |
400 | entry->index = 0; |
401 | stack->size++; | |
402 | return 0; | |
e98a2d6e PP |
403 | } |
404 | ||
405 | static inline | |
406 | unsigned int stack_size(struct stack *stack) | |
407 | { | |
1d2f35fd | 408 | BT_ASSERT(stack); |
8b954936 | 409 | return stack->size; |
e98a2d6e PP |
410 | } |
411 | ||
412 | static | |
413 | void stack_pop(struct stack *stack) | |
414 | { | |
1d2f35fd PP |
415 | BT_ASSERT(stack); |
416 | BT_ASSERT(stack_size(stack)); | |
fdf0e7a0 | 417 | BT_LOGV("Popping from stack: " |
8b954936 PP |
418 | "stack-addr=%p, stack-size-before=%zu, stack-size-after=%zu", |
419 | stack, stack->size, stack->size - 1); | |
420 | stack->size--; | |
e98a2d6e PP |
421 | } |
422 | ||
423 | static inline | |
424 | struct stack_entry *stack_top(struct stack *stack) | |
425 | { | |
1d2f35fd PP |
426 | BT_ASSERT(stack); |
427 | BT_ASSERT(stack_size(stack)); | |
8b954936 PP |
428 | return &g_array_index(stack->entries, struct stack_entry, |
429 | stack->size - 1); | |
e98a2d6e PP |
430 | } |
431 | ||
432 | static inline | |
433 | bool stack_empty(struct stack *stack) | |
434 | { | |
435 | return stack_size(stack) == 0; | |
436 | } | |
437 | ||
438 | static | |
439 | void stack_clear(struct stack *stack) | |
440 | { | |
1d2f35fd | 441 | BT_ASSERT(stack); |
8b954936 | 442 | stack->size = 0; |
e98a2d6e PP |
443 | } |
444 | ||
445 | static inline | |
50842bdc PP |
446 | enum bt_notif_iter_status notif_iter_status_from_m_status( |
447 | enum bt_notif_iter_medium_status m_status) | |
e98a2d6e | 448 | { |
dc77b521 | 449 | return (int) m_status; |
e98a2d6e PP |
450 | } |
451 | ||
452 | static inline | |
50842bdc | 453 | size_t buf_size_bits(struct bt_notif_iter *notit) |
e98a2d6e | 454 | { |
fdf0e7a0 | 455 | return notit->buf.sz * 8; |
e98a2d6e PP |
456 | } |
457 | ||
458 | static inline | |
50842bdc | 459 | size_t buf_available_bits(struct bt_notif_iter *notit) |
e98a2d6e PP |
460 | { |
461 | return buf_size_bits(notit) - notit->buf.at; | |
462 | } | |
463 | ||
464 | static inline | |
50842bdc | 465 | size_t packet_at(struct bt_notif_iter *notit) |
e98a2d6e PP |
466 | { |
467 | return notit->buf.packet_offset + notit->buf.at; | |
468 | } | |
469 | ||
e98a2d6e | 470 | static inline |
50842bdc | 471 | void buf_consume_bits(struct bt_notif_iter *notit, size_t incr) |
e98a2d6e | 472 | { |
fdf0e7a0 PP |
473 | BT_LOGV("Advancing cursor: notit-addr=%p, cur-before=%zu, cur-after=%zu", |
474 | notit, notit->buf.at, notit->buf.at + incr); | |
e98a2d6e PP |
475 | notit->buf.at += incr; |
476 | } | |
477 | ||
e98a2d6e | 478 | static |
50842bdc PP |
479 | enum bt_notif_iter_status request_medium_bytes( |
480 | struct bt_notif_iter *notit) | |
e98a2d6e | 481 | { |
fdf0e7a0 PP |
482 | uint8_t *buffer_addr = NULL; |
483 | size_t buffer_sz = 0; | |
50842bdc | 484 | enum bt_notif_iter_medium_status m_status; |
e98a2d6e | 485 | |
fdf0e7a0 PP |
486 | BT_LOGV("Calling user function (request bytes): notit-addr=%p, " |
487 | "request-size=%zu", notit, notit->medium.max_request_sz); | |
e98a2d6e PP |
488 | m_status = notit->medium.medops.request_bytes( |
489 | notit->medium.max_request_sz, &buffer_addr, | |
490 | &buffer_sz, notit->medium.data); | |
fdf0e7a0 | 491 | BT_LOGV("User function returned: status=%s, buf-addr=%p, buf-size=%zu", |
50842bdc | 492 | bt_notif_iter_medium_status_string(m_status), |
fdf0e7a0 | 493 | buffer_addr, buffer_sz); |
50842bdc | 494 | if (m_status == BT_NOTIF_ITER_MEDIUM_STATUS_OK) { |
1d2f35fd | 495 | BT_ASSERT(buffer_sz != 0); |
e98a2d6e PP |
496 | |
497 | /* New packet offset is old one + old size (in bits) */ | |
498 | notit->buf.packet_offset += buf_size_bits(notit); | |
499 | ||
500 | /* Restart at the beginning of the new medium buffer */ | |
501 | notit->buf.at = 0; | |
2b186c3e | 502 | notit->buf.last_eh_at = SIZE_MAX; |
e98a2d6e PP |
503 | |
504 | /* New medium buffer size */ | |
505 | notit->buf.sz = buffer_sz; | |
506 | ||
507 | /* New medium buffer address */ | |
508 | notit->buf.addr = buffer_addr; | |
fdf0e7a0 PP |
509 | |
510 | BT_LOGV("User function returned new bytes: " | |
511 | "packet-offset=%zu, cur=%zu, size=%zu, addr=%p", | |
512 | notit->buf.packet_offset, notit->buf.at, | |
513 | notit->buf.sz, notit->buf.addr); | |
514 | BT_LOGV_MEM(buffer_addr, buffer_sz, "Returned bytes at %p:", | |
515 | buffer_addr); | |
50842bdc | 516 | } else if (m_status == BT_NOTIF_ITER_MEDIUM_STATUS_EOF) { |
0684124b PP |
517 | /* |
518 | * User returned end of stream: validate that we're not | |
519 | * in the middle of a packet header, packet context, or | |
520 | * event. | |
521 | */ | |
df0139b8 PP |
522 | if (notit->cur_packet_size >= 0) { |
523 | if (packet_at(notit) == notit->cur_packet_size) { | |
524 | goto end; | |
0684124b | 525 | } |
df0139b8 PP |
526 | } else { |
527 | if (packet_at(notit) == 0) { | |
528 | goto end; | |
0684124b | 529 | } |
0684124b | 530 | |
df0139b8 PP |
531 | if (notit->buf.last_eh_at != SIZE_MAX && |
532 | notit->buf.at == notit->buf.last_eh_at) { | |
533 | goto end; | |
0684124b PP |
534 | } |
535 | } | |
536 | ||
0684124b PP |
537 | /* All other states are invalid */ |
538 | BT_LOGW("User function returned %s, but notification iterator is in an unexpected state: " | |
df0139b8 PP |
539 | "state=%s, cur-packet-size=%" PRId64 ", cur=%zu, " |
540 | "packet-cur=%zu, last-eh-at=%zu", | |
50842bdc | 541 | bt_notif_iter_medium_status_string(m_status), |
df0139b8 PP |
542 | state_string(notit->state), |
543 | notit->cur_packet_size, | |
544 | notit->buf.at, packet_at(notit), | |
545 | notit->buf.last_eh_at); | |
50842bdc | 546 | m_status = BT_NOTIF_ITER_MEDIUM_STATUS_ERROR; |
fdf0e7a0 PP |
547 | } else if (m_status < 0) { |
548 | BT_LOGW("User function failed: status=%s", | |
50842bdc | 549 | bt_notif_iter_medium_status_string(m_status)); |
e98a2d6e PP |
550 | } |
551 | ||
df0139b8 | 552 | end: |
e98a2d6e PP |
553 | return notif_iter_status_from_m_status(m_status); |
554 | } | |
555 | ||
556 | static inline | |
50842bdc PP |
557 | enum bt_notif_iter_status buf_ensure_available_bits( |
558 | struct bt_notif_iter *notit) | |
e98a2d6e | 559 | { |
50842bdc | 560 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e PP |
561 | |
562 | if (buf_available_bits(notit) == 0) { | |
563 | /* | |
50842bdc | 564 | * This _cannot_ return BT_NOTIF_ITER_STATUS_OK |
e98a2d6e PP |
565 | * _and_ no bits. |
566 | */ | |
567 | status = request_medium_bytes(notit); | |
568 | } | |
569 | ||
570 | return status; | |
571 | } | |
572 | ||
fb8afeef PP |
573 | static inline |
574 | void reset_clock_value(struct clock_value *cv) | |
575 | { | |
576 | BT_ASSERT(cv); | |
577 | cv->clock_class = NULL; | |
578 | cv->raw_value = UINT64_C(-1); | |
579 | } | |
580 | ||
e98a2d6e | 581 | static |
50842bdc PP |
582 | enum bt_notif_iter_status read_dscope_begin_state( |
583 | struct bt_notif_iter *notit, | |
584 | struct bt_field_type *dscope_field_type, | |
e98a2d6e | 585 | enum state done_state, enum state continue_state, |
a7252d9c | 586 | struct bt_field *dscope_field) |
e98a2d6e | 587 | { |
50842bdc PP |
588 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
589 | enum bt_btr_status btr_status; | |
e98a2d6e PP |
590 | size_t consumed_bits; |
591 | ||
e98a2d6e | 592 | notit->cur_dscope_field = dscope_field; |
fdf0e7a0 PP |
593 | BT_LOGV("Starting BTR: notit-addr=%p, btr-addr=%p, ft-addr=%p", |
594 | notit, notit->btr, dscope_field_type); | |
50842bdc | 595 | consumed_bits = bt_btr_start(notit->btr, dscope_field_type, |
e98a2d6e PP |
596 | notit->buf.addr, notit->buf.at, packet_at(notit), |
597 | notit->buf.sz, &btr_status); | |
fdf0e7a0 | 598 | BT_LOGV("BTR consumed bits: size=%zu", consumed_bits); |
e98a2d6e PP |
599 | |
600 | switch (btr_status) { | |
50842bdc | 601 | case BT_BTR_STATUS_OK: |
e98a2d6e | 602 | /* type was read completely */ |
fdf0e7a0 | 603 | BT_LOGV_STR("Field was completely decoded."); |
e98a2d6e PP |
604 | notit->state = done_state; |
605 | break; | |
50842bdc | 606 | case BT_BTR_STATUS_EOF: |
fdf0e7a0 | 607 | BT_LOGV_STR("BTR needs more data to decode field completely."); |
e98a2d6e PP |
608 | notit->state = continue_state; |
609 | break; | |
610 | default: | |
fdf0e7a0 PP |
611 | BT_LOGW("BTR failed to start: notit-addr=%p, btr-addr=%p, " |
612 | "status=%s", notit, notit->btr, | |
50842bdc PP |
613 | bt_btr_status_string(btr_status)); |
614 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
e98a2d6e PP |
615 | goto end; |
616 | } | |
617 | ||
618 | /* Consume bits now since we know we're not in an error state */ | |
619 | buf_consume_bits(notit, consumed_bits); | |
620 | ||
621 | end: | |
622 | return status; | |
623 | } | |
624 | ||
625 | static | |
50842bdc PP |
626 | enum bt_notif_iter_status read_dscope_continue_state( |
627 | struct bt_notif_iter *notit, enum state done_state) | |
e98a2d6e | 628 | { |
50842bdc PP |
629 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
630 | enum bt_btr_status btr_status; | |
e98a2d6e PP |
631 | size_t consumed_bits; |
632 | ||
df0139b8 PP |
633 | BT_LOGV("Continuing BTR: notit-addr=%p, btr-addr=%p", |
634 | notit, notit->btr); | |
635 | ||
e98a2d6e | 636 | status = buf_ensure_available_bits(notit); |
50842bdc | 637 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
fdf0e7a0 PP |
638 | if (status < 0) { |
639 | BT_LOGW("Cannot ensure that buffer has at least one byte: " | |
640 | "notif-addr=%p, status=%s", | |
50842bdc | 641 | notit, bt_notif_iter_status_string(status)); |
fdf0e7a0 PP |
642 | } else { |
643 | BT_LOGV("Cannot ensure that buffer has at least one byte: " | |
644 | "notif-addr=%p, status=%s", | |
50842bdc | 645 | notit, bt_notif_iter_status_string(status)); |
fdf0e7a0 PP |
646 | } |
647 | ||
e98a2d6e PP |
648 | goto end; |
649 | } | |
650 | ||
df0139b8 | 651 | |
50842bdc | 652 | consumed_bits = bt_btr_continue(notit->btr, notit->buf.addr, |
fdf0e7a0 PP |
653 | notit->buf.sz, &btr_status); |
654 | BT_LOGV("BTR consumed bits: size=%zu", consumed_bits); | |
e98a2d6e PP |
655 | |
656 | switch (btr_status) { | |
50842bdc | 657 | case BT_BTR_STATUS_OK: |
78586d8a | 658 | /* Type was read completely. */ |
fdf0e7a0 | 659 | BT_LOGV_STR("Field was completely decoded."); |
e98a2d6e PP |
660 | notit->state = done_state; |
661 | break; | |
50842bdc | 662 | case BT_BTR_STATUS_EOF: |
78586d8a | 663 | /* Stay in this continue state. */ |
fdf0e7a0 | 664 | BT_LOGV_STR("BTR needs more data to decode field completely."); |
e98a2d6e PP |
665 | break; |
666 | default: | |
fdf0e7a0 PP |
667 | BT_LOGW("BTR failed to continue: notit-addr=%p, btr-addr=%p, " |
668 | "status=%s", notit, notit->btr, | |
50842bdc PP |
669 | bt_btr_status_string(btr_status)); |
670 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
e98a2d6e PP |
671 | goto end; |
672 | } | |
673 | ||
78586d8a | 674 | /* Consume bits now since we know we're not in an error state. */ |
e98a2d6e | 675 | buf_consume_bits(notit, consumed_bits); |
e98a2d6e PP |
676 | end: |
677 | return status; | |
678 | } | |
679 | ||
680 | static | |
a7252d9c | 681 | void release_event_dscopes(struct bt_notif_iter *notit) |
e98a2d6e | 682 | { |
a7252d9c PP |
683 | notit->dscopes.stream_event_header = NULL; |
684 | ||
685 | if (notit->event_header_field) { | |
686 | bt_event_header_field_release(notit->event_header_field); | |
687 | notit->event_header_field = NULL; | |
688 | } | |
689 | ||
690 | notit->dscopes.stream_event_context = NULL; | |
691 | notit->dscopes.event_context = NULL; | |
692 | notit->dscopes.event_payload = NULL; | |
e98a2d6e PP |
693 | } |
694 | ||
695 | static | |
a7252d9c | 696 | void release_all_dscopes(struct bt_notif_iter *notit) |
e98a2d6e | 697 | { |
a7252d9c PP |
698 | notit->dscopes.trace_packet_header = NULL; |
699 | ||
700 | if (notit->packet_header_field) { | |
701 | bt_packet_header_field_release(notit->packet_header_field); | |
702 | notit->packet_header_field = NULL; | |
703 | } | |
704 | ||
705 | notit->dscopes.stream_packet_context = NULL; | |
706 | ||
707 | if (notit->packet_context_field) { | |
708 | bt_packet_context_field_release(notit->packet_context_field); | |
709 | notit->packet_context_field = NULL; | |
710 | } | |
711 | ||
712 | release_event_dscopes(notit); | |
e98a2d6e PP |
713 | } |
714 | ||
715 | static | |
50842bdc PP |
716 | enum bt_notif_iter_status read_packet_header_begin_state( |
717 | struct bt_notif_iter *notit) | |
e98a2d6e | 718 | { |
50842bdc PP |
719 | struct bt_field_type *packet_header_type = NULL; |
720 | enum bt_notif_iter_status ret = BT_NOTIF_ITER_STATUS_OK; | |
e98a2d6e | 721 | |
50842bdc | 722 | if (bt_notif_iter_switch_packet(notit)) { |
fdf0e7a0 | 723 | BT_LOGW("Cannot switch packet: notit-addr=%p", notit); |
50842bdc | 724 | ret = BT_NOTIF_ITER_STATUS_ERROR; |
2cf1d51e JG |
725 | goto end; |
726 | } | |
e98a2d6e | 727 | |
2cf1d51e | 728 | /* Packet header type is common to the whole trace. */ |
2ae62650 | 729 | packet_header_type = bt_trace_borrow_packet_header_field_type( |
78586d8a | 730 | notit->meta.trace); |
e98a2d6e | 731 | if (!packet_header_type) { |
835b2d10 | 732 | notit->state = STATE_AFTER_TRACE_PACKET_HEADER; |
e98a2d6e PP |
733 | goto end; |
734 | } | |
735 | ||
a7252d9c PP |
736 | /* |
737 | * Create free packet header field from trace. This field is | |
738 | * going to be moved to the packet once we create it. We cannot | |
739 | * create the packet now because: | |
740 | * | |
741 | * 1. A packet is created from a stream. | |
742 | * 2. A stream is created from a stream class. | |
743 | * 3. We need the packet header field's content to know the ID | |
744 | * of the stream class to select. | |
745 | */ | |
746 | BT_ASSERT(!notit->packet_header_field); | |
747 | notit->packet_header_field = bt_trace_create_packet_header_field( | |
748 | notit->meta.trace); | |
749 | if (!notit->packet_header_field) { | |
750 | BT_LOGE_STR("Cannot create packet header field wrapper from trace."); | |
751 | ret = BT_NOTIF_ITER_STATUS_ERROR; | |
752 | goto end; | |
753 | } | |
754 | ||
755 | notit->dscopes.trace_packet_header = | |
756 | bt_packet_header_field_borrow_field(notit->packet_header_field); | |
757 | BT_ASSERT(notit->dscopes.trace_packet_header); | |
fdf0e7a0 PP |
758 | BT_LOGV("Decoding packet header field:" |
759 | "notit-addr=%p, trace-addr=%p, trace-name=\"%s\", ft-addr=%p", | |
760 | notit, notit->meta.trace, | |
50842bdc | 761 | bt_trace_get_name(notit->meta.trace), packet_header_type); |
2cf1d51e | 762 | ret = read_dscope_begin_state(notit, packet_header_type, |
fdf0e7a0 PP |
763 | STATE_AFTER_TRACE_PACKET_HEADER, |
764 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
a7252d9c | 765 | notit->dscopes.trace_packet_header); |
fdf0e7a0 PP |
766 | if (ret < 0) { |
767 | BT_LOGW("Cannot decode packet header field: " | |
768 | "notit-addr=%p, trace-addr=%p, " | |
769 | "trace-name=\"%s\", ft-addr=%p", | |
770 | notit, notit->meta.trace, | |
50842bdc | 771 | bt_trace_get_name(notit->meta.trace), |
fdf0e7a0 PP |
772 | packet_header_type); |
773 | } | |
2ae62650 | 774 | |
e98a2d6e | 775 | end: |
2cf1d51e | 776 | return ret; |
e98a2d6e PP |
777 | } |
778 | ||
779 | static | |
50842bdc PP |
780 | enum bt_notif_iter_status read_packet_header_continue_state( |
781 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
782 | { |
783 | return read_dscope_continue_state(notit, | |
78586d8a | 784 | STATE_AFTER_TRACE_PACKET_HEADER); |
e98a2d6e PP |
785 | } |
786 | ||
5f870343 JG |
787 | static |
788 | struct stream_class_field_path_cache * | |
789 | create_stream_class_field_path_cache_entry( | |
50842bdc PP |
790 | struct bt_notif_iter *notit, |
791 | struct bt_stream_class *stream_class) | |
5f870343 JG |
792 | { |
793 | int v = -1; | |
794 | int id = -1; | |
795 | int timestamp_end = -1; | |
796 | int packet_size = -1; | |
797 | int content_size = -1; | |
798 | struct stream_class_field_path_cache *cache_entry = g_new0( | |
799 | struct stream_class_field_path_cache, 1); | |
50842bdc | 800 | struct bt_field_type *event_header = NULL, *packet_context = NULL; |
5f870343 JG |
801 | |
802 | if (!cache_entry) { | |
fdf0e7a0 | 803 | BT_LOGE_STR("Failed to allocate one stream class field path cache."); |
5f870343 JG |
804 | goto end; |
805 | } | |
806 | ||
2ae62650 PP |
807 | event_header = bt_stream_class_borrow_event_header_field_type( |
808 | stream_class); | |
50842bdc | 809 | if (event_header && bt_field_type_is_structure(event_header)) { |
5f870343 JG |
810 | int i, count; |
811 | ||
50842bdc | 812 | count = bt_field_type_structure_get_field_count( |
fdf0e7a0 | 813 | event_header); |
1d2f35fd | 814 | BT_ASSERT(count >= 0); |
fdf0e7a0 | 815 | |
5f870343 JG |
816 | for (i = 0; i < count; i++) { |
817 | int ret; | |
818 | const char *name; | |
819 | ||
2ae62650 | 820 | ret = bt_field_type_structure_borrow_field_by_index( |
5f870343 JG |
821 | event_header, &name, NULL, i); |
822 | if (ret) { | |
fdf0e7a0 PP |
823 | BT_LOGE("Cannot get event header structure field type's field: " |
824 | "notit-addr=%p, stream-class-addr=%p, " | |
825 | "stream-class-name=\"%s\", " | |
826 | "stream-class-id=%" PRId64 ", " | |
827 | "ft-addr=%p, index=%d", | |
828 | notit, stream_class, | |
50842bdc PP |
829 | bt_stream_class_get_name(stream_class), |
830 | bt_stream_class_get_id(stream_class), | |
fdf0e7a0 | 831 | event_header, i); |
5f870343 JG |
832 | goto error; |
833 | } | |
834 | ||
835 | if (v != -1 && id != -1) { | |
836 | break; | |
837 | } | |
fdf0e7a0 PP |
838 | |
839 | if (v == -1 && strcmp(name, "v") == 0) { | |
5f870343 JG |
840 | v = i; |
841 | } else if (id == -1 && !strcmp(name, "id")) { | |
842 | id = i; | |
843 | } | |
844 | } | |
845 | } | |
846 | ||
2ae62650 | 847 | packet_context = bt_stream_class_borrow_packet_context_field_type( |
5f870343 | 848 | stream_class); |
50842bdc | 849 | if (packet_context && bt_field_type_is_structure(packet_context)) { |
5f870343 JG |
850 | int i, count; |
851 | ||
50842bdc | 852 | count = bt_field_type_structure_get_field_count( |
fdf0e7a0 | 853 | packet_context); |
1d2f35fd | 854 | BT_ASSERT(count >= 0); |
fdf0e7a0 | 855 | |
5f870343 JG |
856 | for (i = 0; i < count; i++) { |
857 | int ret; | |
858 | const char *name; | |
50842bdc | 859 | struct bt_field_type *field_type; |
5f870343 JG |
860 | |
861 | if (timestamp_end != -1 && packet_size != -1 && | |
862 | content_size != -1) { | |
863 | break; | |
864 | } | |
865 | ||
2ae62650 | 866 | ret = bt_field_type_structure_borrow_field_by_index( |
5f870343 JG |
867 | packet_context, &name, &field_type, i); |
868 | if (ret) { | |
fdf0e7a0 PP |
869 | BT_LOGE("Cannot get packet context structure field type's field: " |
870 | "notit-addr=%p, stream-class-addr=%p, " | |
871 | "stream-class-name=\"%s\", " | |
872 | "stream-class-id=%" PRId64 ", " | |
873 | "ft-addr=%p, index=%d", | |
874 | notit, stream_class, | |
50842bdc PP |
875 | bt_stream_class_get_name(stream_class), |
876 | bt_stream_class_get_id(stream_class), | |
fdf0e7a0 | 877 | event_header, i); |
5f870343 JG |
878 | goto error; |
879 | } | |
880 | ||
881 | if (timestamp_end == -1 && | |
fdf0e7a0 | 882 | strcmp(name, "timestamp_end") == 0) { |
5f870343 JG |
883 | struct field_cb_override *override = g_new0( |
884 | struct field_cb_override, 1); | |
885 | ||
886 | if (!override) { | |
5f870343 JG |
887 | goto error; |
888 | } | |
889 | ||
890 | override->func = btr_timestamp_end_cb; | |
891 | override->data = notit; | |
5f870343 | 892 | g_hash_table_insert(notit->field_overrides, |
2ae62650 | 893 | field_type, override); |
5f870343 JG |
894 | timestamp_end = i; |
895 | } else if (packet_size == -1 && | |
896 | !strcmp(name, "packet_size")) { | |
897 | packet_size = i; | |
898 | } else if (content_size == -1 && | |
899 | !strcmp(name, "content_size")) { | |
900 | content_size = i; | |
901 | } | |
5f870343 JG |
902 | } |
903 | } | |
904 | ||
905 | cache_entry->v = v; | |
906 | cache_entry->id = id; | |
907 | cache_entry->timestamp_end = timestamp_end; | |
908 | cache_entry->packet_size = packet_size; | |
909 | cache_entry->content_size = content_size; | |
2ae62650 | 910 | |
5f870343 | 911 | end: |
5f870343 | 912 | return cache_entry; |
2ae62650 | 913 | |
5f870343 JG |
914 | error: |
915 | g_free(cache_entry); | |
916 | cache_entry = NULL; | |
917 | goto end; | |
918 | } | |
919 | ||
920 | static | |
921 | struct stream_class_field_path_cache *get_stream_class_field_path_cache( | |
50842bdc PP |
922 | struct bt_notif_iter *notit, |
923 | struct bt_stream_class *stream_class) | |
5f870343 JG |
924 | { |
925 | bool cache_entry_found; | |
926 | struct stream_class_field_path_cache *cache_entry; | |
927 | ||
928 | cache_entry_found = g_hash_table_lookup_extended( | |
929 | notit->sc_field_path_caches, | |
930 | stream_class, NULL, (gpointer) &cache_entry); | |
931 | if (unlikely(!cache_entry_found)) { | |
932 | cache_entry = create_stream_class_field_path_cache_entry(notit, | |
fdf0e7a0 | 933 | stream_class); |
5f870343 | 934 | g_hash_table_insert(notit->sc_field_path_caches, |
2ae62650 | 935 | stream_class, (gpointer) cache_entry); |
5f870343 JG |
936 | } |
937 | ||
938 | return cache_entry; | |
939 | } | |
940 | ||
e98a2d6e | 941 | static inline |
50842bdc PP |
942 | enum bt_notif_iter_status set_current_stream_class( |
943 | struct bt_notif_iter *notit) | |
e98a2d6e | 944 | { |
50842bdc PP |
945 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
946 | struct bt_field_type *packet_header_type = NULL; | |
947 | struct bt_field_type *stream_id_field_type = NULL; | |
948 | struct bt_stream_class *new_stream_class = NULL; | |
e98a2d6e PP |
949 | uint64_t stream_id; |
950 | ||
5f870343 JG |
951 | /* Clear the current stream class field path cache. */ |
952 | notit->cur_sc_field_path_cache = NULL; | |
953 | ||
e98a2d6e | 954 | /* Is there any "stream_id" field in the packet header? */ |
2ae62650 | 955 | packet_header_type = bt_trace_borrow_packet_header_field_type( |
fdf0e7a0 | 956 | notit->meta.trace); |
e98a2d6e | 957 | if (!packet_header_type) { |
fdf0e7a0 PP |
958 | /* |
959 | * No packet header, therefore no `stream_id` field, | |
960 | * therefore only one stream class. | |
961 | */ | |
962 | goto single_stream_class; | |
e98a2d6e PP |
963 | } |
964 | ||
a7252d9c | 965 | BT_ASSERT(bt_field_type_is_structure(packet_header_type)); |
e98a2d6e PP |
966 | |
967 | // TODO: optimalize! | |
968 | stream_id_field_type = | |
2ae62650 | 969 | bt_field_type_structure_borrow_field_type_by_name( |
fdf0e7a0 | 970 | packet_header_type, "stream_id"); |
e98a2d6e PP |
971 | if (stream_id_field_type) { |
972 | /* Find appropriate stream class using current stream ID */ | |
e98a2d6e | 973 | int ret; |
50842bdc | 974 | struct bt_field *stream_id_field = NULL; |
e98a2d6e | 975 | |
1d2f35fd | 976 | BT_ASSERT(notit->dscopes.trace_packet_header); |
e98a2d6e PP |
977 | |
978 | // TODO: optimalize! | |
a7252d9c | 979 | stream_id_field = bt_field_structure_borrow_field_by_name( |
78586d8a | 980 | notit->dscopes.trace_packet_header, "stream_id"); |
1d2f35fd | 981 | BT_ASSERT(stream_id_field); |
d6b8c7f1 | 982 | ret = bt_field_integer_unsigned_get_value( |
78586d8a | 983 | stream_id_field, &stream_id); |
1d2f35fd | 984 | BT_ASSERT(!ret); |
e98a2d6e | 985 | } else { |
fdf0e7a0 | 986 | single_stream_class: |
e98a2d6e | 987 | /* Only one stream: pick the first stream class */ |
1d2f35fd | 988 | BT_ASSERT(bt_trace_get_stream_class_count( |
78586d8a | 989 | notit->meta.trace) == 1); |
e98a2d6e PP |
990 | stream_id = 0; |
991 | } | |
992 | ||
fdf0e7a0 PP |
993 | BT_LOGV("Found stream class ID to use: notit-addr=%p, " |
994 | "stream-class-id=%" PRIu64 ", " | |
995 | "trace-addr=%p, trace-name=\"%s\"", | |
996 | notit, stream_id, notit->meta.trace, | |
50842bdc | 997 | bt_trace_get_name(notit->meta.trace)); |
fdf0e7a0 | 998 | |
2ae62650 | 999 | new_stream_class = bt_trace_borrow_stream_class_by_id( |
fdf0e7a0 | 1000 | notit->meta.trace, stream_id); |
115de887 | 1001 | if (!new_stream_class) { |
fdf0e7a0 PP |
1002 | BT_LOGW("No stream class with ID of stream class ID to use in trace: " |
1003 | "notit-addr=%p, stream-class-id=%" PRIu64 ", " | |
1004 | "trace-addr=%p, trace-name=\"%s\"", | |
1005 | notit, stream_id, notit->meta.trace, | |
50842bdc PP |
1006 | bt_trace_get_name(notit->meta.trace)); |
1007 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
e98a2d6e PP |
1008 | goto end; |
1009 | } | |
1010 | ||
115de887 PP |
1011 | if (notit->meta.stream_class) { |
1012 | if (new_stream_class != notit->meta.stream_class) { | |
1013 | BT_LOGW("Two packets refer to two different stream classes within the same packet sequence: " | |
1014 | "notit-addr=%p, prev-stream-class-addr=%p, " | |
1015 | "prev-stream-class-name=\"%s\", " | |
1016 | "prev-stream-class-id=%" PRId64 ", " | |
1017 | "next-stream-class-addr=%p, " | |
1018 | "next-stream-class-name=\"%s\", " | |
1019 | "next-stream-class-id=%" PRId64 ", " | |
1020 | "trace-addr=%p, trace-name=\"%s\"", | |
1021 | notit, notit->meta.stream_class, | |
50842bdc PP |
1022 | bt_stream_class_get_name(notit->meta.stream_class), |
1023 | bt_stream_class_get_id(notit->meta.stream_class), | |
115de887 | 1024 | new_stream_class, |
50842bdc PP |
1025 | bt_stream_class_get_name(new_stream_class), |
1026 | bt_stream_class_get_id(new_stream_class), | |
115de887 | 1027 | notit->meta.trace, |
50842bdc PP |
1028 | bt_trace_get_name(notit->meta.trace)); |
1029 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
115de887 PP |
1030 | goto end; |
1031 | } | |
1032 | } else { | |
2ae62650 | 1033 | notit->meta.stream_class = new_stream_class; |
115de887 PP |
1034 | } |
1035 | ||
fdf0e7a0 PP |
1036 | BT_LOGV("Set current stream class: " |
1037 | "notit-addr=%p, stream-class-addr=%p, " | |
1038 | "stream-class-name=\"%s\", stream-class-id=%" PRId64, | |
1039 | notit, notit->meta.stream_class, | |
50842bdc PP |
1040 | bt_stream_class_get_name(notit->meta.stream_class), |
1041 | bt_stream_class_get_id(notit->meta.stream_class)); | |
fdf0e7a0 | 1042 | |
5f870343 JG |
1043 | /* |
1044 | * Retrieve (or lazily create) the current stream class field path | |
1045 | * cache. | |
1046 | */ | |
1047 | notit->cur_sc_field_path_cache = get_stream_class_field_path_cache( | |
fdf0e7a0 | 1048 | notit, notit->meta.stream_class); |
5f870343 | 1049 | if (!notit->cur_sc_field_path_cache) { |
fdf0e7a0 PP |
1050 | BT_LOGW("Cannot retrieve stream class field path from cache: " |
1051 | "notit-addr=%p, stream-class-addr=%p, " | |
1052 | "stream-class-name=\"%s\", stream-class-id=%" PRId64, | |
1053 | notit, notit->meta.stream_class, | |
50842bdc PP |
1054 | bt_stream_class_get_name(notit->meta.stream_class), |
1055 | bt_stream_class_get_id(notit->meta.stream_class)); | |
1056 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
5f870343 JG |
1057 | goto end; |
1058 | } | |
2ae62650 | 1059 | |
e98a2d6e | 1060 | end: |
e98a2d6e PP |
1061 | return status; |
1062 | } | |
1063 | ||
a7252d9c PP |
1064 | static inline |
1065 | uint64_t get_cur_stream_instance_id(struct bt_notif_iter *notit) | |
1066 | { | |
1067 | struct bt_field *stream_instance_id_field = NULL; | |
1068 | uint64_t stream_instance_id = -1ULL; | |
1069 | int ret; | |
1070 | ||
1071 | if (!notit->dscopes.trace_packet_header) { | |
1072 | goto end; | |
1073 | } | |
1074 | ||
1075 | stream_instance_id_field = bt_field_structure_borrow_field_by_name( | |
1076 | notit->dscopes.trace_packet_header, "stream_instance_id"); | |
1077 | if (!stream_instance_id_field) { | |
1078 | goto end; | |
1079 | } | |
1080 | ||
1081 | ret = bt_field_integer_unsigned_get_value(stream_instance_id_field, | |
1082 | &stream_instance_id); | |
1083 | if (ret) { | |
1084 | stream_instance_id = -1ULL; | |
1085 | goto end; | |
1086 | } | |
1087 | ||
1088 | end: | |
1089 | return stream_instance_id; | |
1090 | } | |
1091 | ||
1092 | static inline | |
1093 | enum bt_notif_iter_status set_current_stream(struct bt_notif_iter *notit) | |
1094 | { | |
1095 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
1096 | struct bt_stream *stream = NULL; | |
1097 | ||
1098 | BT_LOGV("Calling user function (get stream): notit-addr=%p, " | |
1099 | "stream-class-addr=%p, stream-class-name=\"%s\", " | |
1100 | "stream-class-id=%" PRId64, | |
1101 | notit, notit->meta.stream_class, | |
1102 | bt_stream_class_get_name(notit->meta.stream_class), | |
1103 | bt_stream_class_get_id(notit->meta.stream_class)); | |
1104 | stream = bt_get(notit->medium.medops.borrow_stream( | |
1105 | notit->meta.stream_class, get_cur_stream_instance_id(notit), | |
1106 | notit->medium.data)); | |
1107 | BT_LOGV("User function returned: stream-addr=%p", stream); | |
1108 | if (!stream) { | |
1109 | BT_LOGW_STR("User function failed to return a stream object for the given stream class."); | |
1110 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1111 | goto end; | |
1112 | } | |
1113 | ||
1114 | if (notit->stream && stream != notit->stream) { | |
1115 | BT_LOGW("User function returned a different stream than the previous one for the same sequence of packets."); | |
1116 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1117 | goto end; | |
1118 | } | |
1119 | ||
1120 | BT_MOVE(notit->stream, stream); | |
1121 | ||
1122 | end: | |
1123 | bt_put(stream); | |
1124 | return status; | |
1125 | } | |
1126 | ||
1127 | static inline | |
1128 | enum bt_notif_iter_status set_current_packet(struct bt_notif_iter *notit) | |
1129 | { | |
1130 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
1131 | struct bt_packet *packet = NULL; | |
1132 | ||
1133 | BT_LOGV("Creating packet for packet notification: " | |
1134 | "notit-addr=%p", notit); | |
1135 | BT_LOGV("Creating packet from stream: " | |
1136 | "notit-addr=%p, stream-addr=%p, " | |
1137 | "stream-class-addr=%p, " | |
1138 | "stream-class-name=\"%s\", " | |
1139 | "stream-class-id=%" PRId64, | |
1140 | notit, notit->stream, notit->meta.stream_class, | |
1141 | bt_stream_class_get_name(notit->meta.stream_class), | |
1142 | bt_stream_class_get_id(notit->meta.stream_class)); | |
1143 | ||
1144 | /* Create packet */ | |
1145 | BT_ASSERT(notit->stream); | |
1146 | packet = bt_packet_create(notit->stream); | |
1147 | if (!packet) { | |
1148 | BT_LOGE("Cannot create packet from stream: " | |
1149 | "notit-addr=%p, stream-addr=%p, " | |
1150 | "stream-class-addr=%p, " | |
1151 | "stream-class-name=\"%s\", " | |
1152 | "stream-class-id=%" PRId64, | |
1153 | notit, notit->stream, notit->meta.stream_class, | |
1154 | bt_stream_class_get_name(notit->meta.stream_class), | |
1155 | bt_stream_class_get_id(notit->meta.stream_class)); | |
1156 | goto error; | |
1157 | } | |
1158 | ||
1159 | goto end; | |
1160 | ||
1161 | error: | |
1162 | BT_PUT(packet); | |
1163 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1164 | ||
1165 | end: | |
1166 | BT_MOVE(notit->packet, packet); | |
1167 | return status; | |
1168 | } | |
1169 | ||
e98a2d6e | 1170 | static |
50842bdc PP |
1171 | enum bt_notif_iter_status after_packet_header_state( |
1172 | struct bt_notif_iter *notit) | |
e98a2d6e | 1173 | { |
50842bdc | 1174 | enum bt_notif_iter_status status; |
e98a2d6e PP |
1175 | |
1176 | status = set_current_stream_class(notit); | |
a7252d9c PP |
1177 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
1178 | goto end; | |
e98a2d6e PP |
1179 | } |
1180 | ||
a7252d9c PP |
1181 | notit->state = STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN; |
1182 | ||
1183 | end: | |
e98a2d6e PP |
1184 | return status; |
1185 | } | |
1186 | ||
1187 | static | |
50842bdc PP |
1188 | enum bt_notif_iter_status read_packet_context_begin_state( |
1189 | struct bt_notif_iter *notit) | |
e98a2d6e | 1190 | { |
50842bdc PP |
1191 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1192 | struct bt_field_type *packet_context_type; | |
e98a2d6e | 1193 | |
1d2f35fd | 1194 | BT_ASSERT(notit->meta.stream_class); |
2ae62650 | 1195 | packet_context_type = bt_stream_class_borrow_packet_context_field_type( |
fdf0e7a0 | 1196 | notit->meta.stream_class); |
e98a2d6e | 1197 | if (!packet_context_type) { |
fdf0e7a0 PP |
1198 | BT_LOGV("No packet packet context field type in stream class: continuing: " |
1199 | "notit-addr=%p, stream-class-addr=%p, " | |
1200 | "stream-class-name=\"%s\", stream-class-id=%" PRId64, | |
1201 | notit, notit->meta.stream_class, | |
50842bdc PP |
1202 | bt_stream_class_get_name(notit->meta.stream_class), |
1203 | bt_stream_class_get_id(notit->meta.stream_class)); | |
835b2d10 | 1204 | notit->state = STATE_AFTER_STREAM_PACKET_CONTEXT; |
e98a2d6e PP |
1205 | goto end; |
1206 | } | |
1207 | ||
a7252d9c PP |
1208 | /* |
1209 | * Create free packet context field from stream class. This | |
1210 | * field is going to be moved to the packet once we create it. | |
1211 | * We cannot create the packet now because a packet is created | |
1212 | * from a stream, and this API must be able to return the packet | |
1213 | * header and context fields without creating a stream | |
1214 | * (bt_notif_iter_get_packet_header_context_fields()). | |
1215 | */ | |
1216 | BT_ASSERT(!notit->packet_context_field); | |
1217 | notit->packet_context_field = | |
1218 | bt_stream_class_create_packet_context_field( | |
1219 | notit->meta.stream_class); | |
1220 | if (!notit->packet_context_field) { | |
1221 | BT_LOGE_STR("Cannot create packet context field wrapper from stream class."); | |
1222 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1223 | goto end; | |
1224 | } | |
1225 | ||
1226 | notit->dscopes.stream_packet_context = | |
1227 | bt_packet_context_field_borrow_field(notit->packet_context_field); | |
1228 | BT_ASSERT(notit->dscopes.stream_packet_context); | |
fdf0e7a0 PP |
1229 | BT_LOGV("Decoding packet context field: " |
1230 | "notit-addr=%p, stream-class-addr=%p, " | |
1231 | "stream-class-name=\"%s\", stream-class-id=%" PRId64 ", " | |
1232 | "ft-addr=%p", | |
1233 | notit, notit->meta.stream_class, | |
50842bdc PP |
1234 | bt_stream_class_get_name(notit->meta.stream_class), |
1235 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1236 | packet_context_type); |
e98a2d6e | 1237 | status = read_dscope_begin_state(notit, packet_context_type, |
fdf0e7a0 PP |
1238 | STATE_AFTER_STREAM_PACKET_CONTEXT, |
1239 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
a7252d9c | 1240 | notit->dscopes.stream_packet_context); |
fdf0e7a0 PP |
1241 | if (status < 0) { |
1242 | BT_LOGW("Cannot decode packet context field: " | |
1243 | "notit-addr=%p, stream-class-addr=%p, " | |
1244 | "stream-class-name=\"%s\", " | |
1245 | "stream-class-id=%" PRId64 ", ft-addr=%p", | |
1246 | notit, notit->meta.stream_class, | |
50842bdc PP |
1247 | bt_stream_class_get_name(notit->meta.stream_class), |
1248 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 PP |
1249 | packet_context_type); |
1250 | } | |
e98a2d6e PP |
1251 | |
1252 | end: | |
e98a2d6e PP |
1253 | return status; |
1254 | } | |
1255 | ||
1256 | static | |
50842bdc PP |
1257 | enum bt_notif_iter_status read_packet_context_continue_state( |
1258 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1259 | { |
1260 | return read_dscope_continue_state(notit, | |
78586d8a | 1261 | STATE_AFTER_STREAM_PACKET_CONTEXT); |
e98a2d6e PP |
1262 | } |
1263 | ||
fb8afeef PP |
1264 | static inline |
1265 | uint64_t get_field_raw_clock_value(struct bt_field *base_field, | |
1266 | const char *field_name, struct bt_clock_class **user_cc) | |
1267 | { | |
1268 | struct bt_field *field; | |
1269 | struct bt_field_type *ft; | |
1270 | struct bt_clock_class *clock_class = NULL; | |
1271 | uint64_t val = UINT64_C(-1); | |
1272 | int ret; | |
1273 | ||
1274 | field = bt_field_structure_borrow_field_by_name(base_field, field_name); | |
1275 | if (!field) { | |
1276 | goto end; | |
1277 | } | |
1278 | ||
1279 | ft = bt_field_borrow_type(field); | |
1280 | BT_ASSERT(ft); | |
1281 | ||
1282 | if (!bt_field_type_is_integer(ft)) { | |
1283 | goto end; | |
1284 | } | |
1285 | ||
1286 | clock_class = bt_field_type_integer_borrow_mapped_clock_class(ft); | |
1287 | if (!clock_class) { | |
1288 | goto end; | |
1289 | } | |
1290 | ||
1291 | ret = bt_field_integer_unsigned_get_value(field, &val); | |
1292 | BT_ASSERT(ret == 0); | |
1293 | ||
1294 | end: | |
1295 | *user_cc = clock_class; | |
1296 | return val; | |
1297 | } | |
1298 | ||
1299 | static | |
1300 | void set_current_packet_begin_end(struct bt_notif_iter *notit) | |
1301 | { | |
1302 | struct bt_clock_class *clock_class; | |
1303 | uint64_t val; | |
1304 | ||
1305 | if (!notit->dscopes.stream_packet_context) { | |
1306 | goto end; | |
1307 | } | |
1308 | ||
1309 | val = get_field_raw_clock_value(notit->dscopes.stream_packet_context, | |
1310 | "timestamp_begin", &clock_class); | |
1311 | notit->cur_packet_begin_cv.clock_class = clock_class; | |
1312 | notit->cur_packet_begin_cv.raw_value = val; | |
1313 | val = get_field_raw_clock_value(notit->dscopes.stream_packet_context, | |
1314 | "timestamp_end", &clock_class); | |
1315 | notit->cur_packet_end_cv.clock_class = clock_class; | |
1316 | notit->cur_packet_end_cv.raw_value = val; | |
1317 | ||
1318 | end: | |
1319 | return; | |
1320 | } | |
1321 | ||
78586d8a | 1322 | static |
50842bdc PP |
1323 | enum bt_notif_iter_status set_current_packet_content_sizes( |
1324 | struct bt_notif_iter *notit) | |
e98a2d6e | 1325 | { |
50842bdc PP |
1326 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1327 | struct bt_field *packet_size_field = NULL; | |
1328 | struct bt_field *content_size_field = NULL; | |
97755805 | 1329 | uint64_t content_size = -1ULL, packet_size = -1ULL; |
e98a2d6e | 1330 | |
89b08333 MD |
1331 | if (!notit->dscopes.stream_packet_context) { |
1332 | goto end; | |
1333 | } | |
e98a2d6e | 1334 | |
a7252d9c | 1335 | packet_size_field = bt_field_structure_borrow_field_by_name( |
fdf0e7a0 | 1336 | notit->dscopes.stream_packet_context, "packet_size"); |
a7252d9c | 1337 | content_size_field = bt_field_structure_borrow_field_by_name( |
fdf0e7a0 | 1338 | notit->dscopes.stream_packet_context, "content_size"); |
e98a2d6e | 1339 | if (packet_size_field) { |
d6b8c7f1 | 1340 | int ret = bt_field_integer_unsigned_get_value( |
fdf0e7a0 | 1341 | packet_size_field, &packet_size); |
e98a2d6e | 1342 | |
1d2f35fd | 1343 | BT_ASSERT(ret == 0); |
e98a2d6e | 1344 | if (packet_size == 0) { |
fdf0e7a0 PP |
1345 | BT_LOGW("Invalid packet size: packet context field indicates packet size is zero: " |
1346 | "notit-addr=%p, packet-context-field-addr=%p", | |
1347 | notit, notit->dscopes.stream_packet_context); | |
50842bdc | 1348 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1349 | goto end; |
1350 | } else if ((packet_size % 8) != 0) { | |
fdf0e7a0 PP |
1351 | BT_LOGW("Invalid packet size: packet context field indicates packet size is not a multiple of 8: " |
1352 | "notit-addr=%p, packet-context-field-addr=%p, " | |
1353 | "packet-size=%" PRIu64, | |
1354 | notit, notit->dscopes.stream_packet_context, | |
1355 | packet_size); | |
50842bdc | 1356 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1357 | goto end; |
1358 | } | |
1359 | } | |
78586d8a | 1360 | |
e98a2d6e | 1361 | if (content_size_field) { |
d6b8c7f1 | 1362 | int ret = bt_field_integer_unsigned_get_value( |
e98a2d6e | 1363 | content_size_field, &content_size); |
78586d8a | 1364 | |
1d2f35fd | 1365 | BT_ASSERT(ret == 0); |
e98a2d6e PP |
1366 | } else { |
1367 | content_size = packet_size; | |
1368 | } | |
1369 | ||
fdf0e7a0 PP |
1370 | if (content_size > packet_size) { |
1371 | BT_LOGW("Invalid packet or content size: packet context field indicates content size is greater than packet size: " | |
1372 | "notit-addr=%p, packet-context-field-addr=%p, " | |
1373 | "packet-size=%" PRIu64 ", content-size=%" PRIu64, | |
1374 | notit, notit->dscopes.stream_packet_context, | |
1375 | packet_size, content_size); | |
50842bdc | 1376 | status = BT_NOTIF_ITER_STATUS_ERROR; |
fdf0e7a0 PP |
1377 | goto end; |
1378 | } | |
1379 | ||
97755805 MD |
1380 | if (packet_size != -1ULL) { |
1381 | notit->cur_packet_size = packet_size; | |
1382 | } else { | |
1383 | /* | |
1384 | * Use the content size as packet size indicator if the | |
1385 | * packet size field is missing. This means there is no | |
1386 | * padding in this stream. | |
1387 | */ | |
1388 | notit->cur_packet_size = content_size; | |
1389 | } | |
e98a2d6e | 1390 | notit->cur_content_size = content_size; |
fdf0e7a0 PP |
1391 | BT_LOGV("Set current packet and content sizes: " |
1392 | "notit-addr=%p, packet-size=%" PRIu64 ", content-size=%" PRIu64, | |
1393 | notit, packet_size, content_size); | |
e98a2d6e | 1394 | end: |
e98a2d6e PP |
1395 | return status; |
1396 | } | |
1397 | ||
1398 | static | |
50842bdc PP |
1399 | enum bt_notif_iter_status after_packet_context_state( |
1400 | struct bt_notif_iter *notit) | |
e98a2d6e | 1401 | { |
50842bdc | 1402 | enum bt_notif_iter_status status; |
e98a2d6e PP |
1403 | |
1404 | status = set_current_packet_content_sizes(notit); | |
fb8afeef PP |
1405 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
1406 | goto end; | |
1407 | } | |
1408 | ||
1409 | set_current_packet_begin_end(notit); | |
1410 | ||
1411 | if (notit->stream_begin_emitted) { | |
1412 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
1413 | } else { | |
1414 | notit->state = STATE_EMIT_NOTIF_NEW_STREAM; | |
e98a2d6e PP |
1415 | } |
1416 | ||
fb8afeef | 1417 | end: |
e98a2d6e PP |
1418 | return status; |
1419 | } | |
1420 | ||
1421 | static | |
50842bdc PP |
1422 | enum bt_notif_iter_status read_event_header_begin_state( |
1423 | struct bt_notif_iter *notit) | |
e98a2d6e | 1424 | { |
50842bdc PP |
1425 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1426 | struct bt_field_type *event_header_type = NULL; | |
e98a2d6e | 1427 | |
174e773b PP |
1428 | /* Reset the position of the last event header */ |
1429 | notit->buf.last_eh_at = notit->buf.at; | |
1430 | ||
e98a2d6e PP |
1431 | /* Check if we have some content left */ |
1432 | if (notit->cur_content_size >= 0) { | |
1433 | if (packet_at(notit) == notit->cur_content_size) { | |
1434 | /* No more events! */ | |
fdf0e7a0 PP |
1435 | BT_LOGV("Reached end of packet: notit-addr=%p, " |
1436 | "cur=%zu", notit, packet_at(notit)); | |
e98a2d6e PP |
1437 | notit->state = STATE_EMIT_NOTIF_END_OF_PACKET; |
1438 | goto end; | |
1439 | } else if (packet_at(notit) > notit->cur_content_size) { | |
1440 | /* That's not supposed to happen */ | |
fdf0e7a0 | 1441 | BT_LOGV("Before decoding event header field: cursor is passed the packet's content: " |
1974687e | 1442 | "notit-addr=%p, content-size=%" PRId64 ", " |
fdf0e7a0 PP |
1443 | "cur=%zu", notit, notit->cur_content_size, |
1444 | packet_at(notit)); | |
50842bdc | 1445 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1446 | goto end; |
1447 | } | |
1448 | } | |
1449 | ||
a7252d9c PP |
1450 | release_event_dscopes(notit); |
1451 | BT_ASSERT(notit->meta.stream_class); | |
2ae62650 | 1452 | event_header_type = bt_stream_class_borrow_event_header_field_type( |
e98a2d6e PP |
1453 | notit->meta.stream_class); |
1454 | if (!event_header_type) { | |
835b2d10 | 1455 | notit->state = STATE_AFTER_STREAM_EVENT_HEADER; |
e98a2d6e PP |
1456 | goto end; |
1457 | } | |
1458 | ||
a7252d9c PP |
1459 | BT_ASSERT(!notit->event_header_field); |
1460 | notit->event_header_field = bt_stream_class_create_event_header_field( | |
1461 | notit->meta.stream_class); | |
1462 | if (!notit->event_header_field) { | |
1463 | BT_LOGE_STR("Cannot create event header field wrapper from trace."); | |
1464 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1465 | goto end; | |
1466 | } | |
1467 | ||
1468 | notit->dscopes.stream_event_header = | |
1469 | bt_event_header_field_borrow_field(notit->event_header_field); | |
1470 | BT_ASSERT(notit->dscopes.stream_event_header); | |
fdf0e7a0 PP |
1471 | BT_LOGV("Decoding event header field: " |
1472 | "notit-addr=%p, stream-class-addr=%p, " | |
1473 | "stream-class-name=\"%s\", stream-class-id=%" PRId64 ", " | |
1474 | "ft-addr=%p", | |
1475 | notit, notit->meta.stream_class, | |
50842bdc PP |
1476 | bt_stream_class_get_name(notit->meta.stream_class), |
1477 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1478 | event_header_type); |
e98a2d6e PP |
1479 | status = read_dscope_begin_state(notit, event_header_type, |
1480 | STATE_AFTER_STREAM_EVENT_HEADER, | |
1481 | STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE, | |
a7252d9c | 1482 | notit->dscopes.stream_event_header); |
fdf0e7a0 PP |
1483 | if (status < 0) { |
1484 | BT_LOGW("Cannot decode event header field: " | |
1485 | "notit-addr=%p, stream-class-addr=%p, " | |
1486 | "stream-class-name=\"%s\", " | |
1487 | "stream-class-id=%" PRId64 ", ft-addr=%p", | |
1488 | notit, notit->meta.stream_class, | |
50842bdc PP |
1489 | bt_stream_class_get_name(notit->meta.stream_class), |
1490 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 PP |
1491 | event_header_type); |
1492 | } | |
e98a2d6e | 1493 | |
2ae62650 | 1494 | end: |
e98a2d6e PP |
1495 | return status; |
1496 | } | |
1497 | ||
1498 | static | |
50842bdc PP |
1499 | enum bt_notif_iter_status read_event_header_continue_state( |
1500 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1501 | { |
1502 | return read_dscope_continue_state(notit, | |
1503 | STATE_AFTER_STREAM_EVENT_HEADER); | |
1504 | } | |
1505 | ||
1506 | static inline | |
50842bdc | 1507 | enum bt_notif_iter_status set_current_event_class(struct bt_notif_iter *notit) |
e98a2d6e PP |
1508 | { |
1509 | /* | |
1510 | * The assert() calls in this function are okay because it is | |
1511 | * assumed here that all the metadata objects have been | |
1512 | * validated for CTF correctness before decoding actual streams. | |
1513 | */ | |
1514 | ||
50842bdc PP |
1515 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1516 | struct bt_field_type *event_header_type; | |
1517 | struct bt_field_type *id_field_type = NULL; | |
1518 | struct bt_field_type *v_field_type = NULL; | |
e98a2d6e PP |
1519 | uint64_t event_id = -1ULL; |
1520 | int ret; | |
1521 | ||
2ae62650 | 1522 | event_header_type = bt_stream_class_borrow_event_header_field_type( |
e98a2d6e PP |
1523 | notit->meta.stream_class); |
1524 | if (!event_header_type) { | |
fdf0e7a0 PP |
1525 | /* |
1526 | * No event header, therefore no event class ID field, | |
1527 | * therefore only one event class. | |
1528 | */ | |
1529 | goto single_event_class; | |
e98a2d6e PP |
1530 | } |
1531 | ||
1532 | /* Is there any "id"/"v" field in the event header? */ | |
a7252d9c | 1533 | BT_ASSERT(bt_field_type_is_structure(event_header_type)); |
2ae62650 | 1534 | id_field_type = bt_field_type_structure_borrow_field_type_by_name( |
e98a2d6e | 1535 | event_header_type, "id"); |
2ae62650 | 1536 | v_field_type = bt_field_type_structure_borrow_field_type_by_name( |
e98a2d6e | 1537 | event_header_type, "v"); |
1d2f35fd | 1538 | BT_ASSERT(notit->dscopes.stream_event_header); |
e98a2d6e PP |
1539 | if (v_field_type) { |
1540 | /* | |
1541 | * _ _____ _____ | |
1542 | * | | |_ _|_ _| __ __ _ | |
1543 | * | | | | | || '_ \ / _` | | |
1544 | * | |___| | | || | | | (_| | S P E C I A L | |
1545 | * |_____|_| |_||_| |_|\__, | C A S E ™ | |
1546 | * |___/ | |
1547 | */ | |
50842bdc PP |
1548 | struct bt_field *v_field = NULL; |
1549 | struct bt_field *v_struct_field = NULL; | |
1550 | struct bt_field *v_struct_id_field = NULL; | |
e98a2d6e PP |
1551 | |
1552 | // TODO: optimalize! | |
a7252d9c | 1553 | v_field = bt_field_structure_borrow_field_by_name( |
e98a2d6e | 1554 | notit->dscopes.stream_event_header, "v"); |
1d2f35fd | 1555 | BT_ASSERT(v_field); |
e98a2d6e PP |
1556 | |
1557 | v_struct_field = | |
a7252d9c | 1558 | bt_field_variant_borrow_current_field(v_field); |
e98a2d6e PP |
1559 | if (!v_struct_field) { |
1560 | goto end_v_field_type; | |
1561 | } | |
1562 | ||
1563 | // TODO: optimalize! | |
a7252d9c PP |
1564 | v_struct_id_field = bt_field_structure_borrow_field_by_name( |
1565 | v_struct_field, "id"); | |
e98a2d6e PP |
1566 | if (!v_struct_id_field) { |
1567 | goto end_v_field_type; | |
1568 | } | |
1569 | ||
50842bdc | 1570 | if (bt_field_is_integer(v_struct_id_field)) { |
d6b8c7f1 | 1571 | ret = bt_field_integer_unsigned_get_value( |
fdf0e7a0 PP |
1572 | v_struct_id_field, &event_id); |
1573 | if (ret) { | |
1574 | BT_LOGV("Cannot get value of unsigned integer field (`id`): continuing: " | |
1575 | "notit=%p, field-addr=%p", | |
1576 | notit, v_struct_id_field); | |
1577 | event_id = -1ULL; | |
1578 | } | |
e98a2d6e | 1579 | } |
e98a2d6e PP |
1580 | } |
1581 | ||
a7252d9c | 1582 | end_v_field_type: |
e98a2d6e PP |
1583 | if (id_field_type && event_id == -1ULL) { |
1584 | /* Check "id" field */ | |
50842bdc | 1585 | struct bt_field *id_field = NULL; |
6606e9c1 | 1586 | int ret_get_value = 0; |
e98a2d6e PP |
1587 | |
1588 | // TODO: optimalize! | |
a7252d9c | 1589 | id_field = bt_field_structure_borrow_field_by_name( |
e98a2d6e | 1590 | notit->dscopes.stream_event_header, "id"); |
fdf0e7a0 PP |
1591 | if (!id_field) { |
1592 | goto check_event_id; | |
1593 | } | |
e98a2d6e | 1594 | |
a7252d9c PP |
1595 | ret_get_value = bt_field_integer_unsigned_get_value( |
1596 | id_field, &event_id); | |
1d2f35fd | 1597 | BT_ASSERT(ret_get_value == 0); |
e98a2d6e PP |
1598 | } |
1599 | ||
fdf0e7a0 | 1600 | check_event_id: |
e98a2d6e | 1601 | if (event_id == -1ULL) { |
fdf0e7a0 | 1602 | single_event_class: |
e98a2d6e | 1603 | /* Event ID not found: single event? */ |
1d2f35fd | 1604 | BT_ASSERT(bt_stream_class_get_event_class_count( |
e98a2d6e PP |
1605 | notit->meta.stream_class) == 1); |
1606 | event_id = 0; | |
1607 | } | |
1608 | ||
fdf0e7a0 PP |
1609 | BT_LOGV("Found event class ID to use: notit-addr=%p, " |
1610 | "stream-class-addr=%p, stream-class-name=\"%s\", " | |
1611 | "stream-class-id=%" PRId64 ", " | |
1612 | "event-class-id=%" PRIu64, | |
1613 | notit, notit->meta.stream_class, | |
50842bdc PP |
1614 | bt_stream_class_get_name(notit->meta.stream_class), |
1615 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1616 | event_id); |
2ae62650 | 1617 | notit->meta.event_class = bt_stream_class_borrow_event_class_by_id( |
e98a2d6e PP |
1618 | notit->meta.stream_class, event_id); |
1619 | if (!notit->meta.event_class) { | |
fdf0e7a0 PP |
1620 | BT_LOGW("No event class with ID of event class ID to use in stream class: " |
1621 | "notit-addr=%p, stream-class-addr=%p, " | |
1622 | "stream-class-name=\"%s\", " | |
1623 | "stream-class-id=%" PRId64 ", " | |
1624 | "event-class-id=%" PRIu64, | |
1625 | notit, notit->meta.stream_class, | |
50842bdc PP |
1626 | bt_stream_class_get_name(notit->meta.stream_class), |
1627 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1628 | event_id); |
50842bdc | 1629 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1630 | goto end; |
1631 | } | |
1632 | ||
fdf0e7a0 PP |
1633 | BT_LOGV("Set current event class: " |
1634 | "notit-addr=%p, event-class-addr=%p, " | |
1635 | "event-class-name=\"%s\", event-class-id=%" PRId64, | |
1636 | notit, notit->meta.event_class, | |
50842bdc PP |
1637 | bt_event_class_get_name(notit->meta.event_class), |
1638 | bt_event_class_get_id(notit->meta.event_class)); | |
fdf0e7a0 | 1639 | |
e98a2d6e | 1640 | end: |
e98a2d6e PP |
1641 | return status; |
1642 | } | |
1643 | ||
a7252d9c PP |
1644 | static inline |
1645 | enum bt_notif_iter_status set_current_event_notification( | |
1646 | struct bt_notif_iter *notit) | |
1647 | { | |
1648 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
1649 | struct bt_notification *notif = NULL; | |
1650 | ||
1651 | BT_ASSERT(notit->meta.event_class); | |
1652 | BT_ASSERT(notit->packet); | |
1653 | BT_LOGV("Creating event notification from event class and packet: " | |
1654 | "notit-addr=%p, ec-addr=%p, ec-name=\"%s\", packet-addr=%p", | |
1655 | notit, notit->meta.event_class, | |
1656 | bt_event_class_get_name(notit->meta.event_class), | |
1657 | notit->packet); | |
8eda4bcb PP |
1658 | BT_ASSERT(notit->notif_iter); |
1659 | notif = bt_notification_event_create(notit->notif_iter, | |
fb8afeef | 1660 | notit->meta.event_class, notit->packet); |
a7252d9c PP |
1661 | if (!notif) { |
1662 | BT_LOGE("Cannot create event notification: " | |
1663 | "notit-addr=%p, ec-addr=%p, ec-name=\"%s\", " | |
1664 | "packet-addr=%p", | |
1665 | notit, notit->meta.event_class, | |
1666 | bt_event_class_get_name(notit->meta.event_class), | |
1667 | notit->packet); | |
1668 | goto error; | |
1669 | } | |
1670 | ||
1671 | goto end; | |
1672 | ||
1673 | error: | |
1674 | BT_PUT(notif); | |
1675 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1676 | ||
1677 | end: | |
1678 | BT_MOVE(notit->event_notif, notif); | |
1679 | return status; | |
1680 | } | |
1681 | ||
e98a2d6e | 1682 | static |
50842bdc PP |
1683 | enum bt_notif_iter_status after_event_header_state( |
1684 | struct bt_notif_iter *notit) | |
e98a2d6e | 1685 | { |
50842bdc | 1686 | enum bt_notif_iter_status status; |
e98a2d6e | 1687 | |
e98a2d6e | 1688 | status = set_current_event_class(notit); |
50842bdc | 1689 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
e98a2d6e PP |
1690 | goto end; |
1691 | } | |
1692 | ||
a7252d9c PP |
1693 | status = set_current_event_notification(notit); |
1694 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
1695 | goto end; | |
1696 | } | |
1697 | ||
1698 | notit->event = bt_notification_event_borrow_event(notit->event_notif); | |
1699 | BT_ASSERT(notit->event); | |
1700 | ||
1701 | if (notit->event_header_field) { | |
1702 | int ret; | |
1703 | ||
1704 | BT_ASSERT(notit->event); | |
1705 | ret = bt_event_move_header(notit->event, | |
1706 | notit->event_header_field); | |
1707 | ||
1708 | if (ret) { | |
1709 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1710 | goto end; | |
1711 | } | |
1712 | ||
1713 | notit->event_header_field = NULL; | |
1714 | ||
1715 | /* | |
1716 | * At this point notit->dscopes.stream_event_header has | |
1717 | * the same value as the event header field within | |
1718 | * notit->event. | |
1719 | */ | |
1720 | BT_ASSERT(bt_event_borrow_header(notit->event) == | |
1721 | notit->dscopes.stream_event_header); | |
1722 | } | |
1723 | ||
e98a2d6e PP |
1724 | notit->state = STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN; |
1725 | ||
1726 | end: | |
1727 | return status; | |
1728 | } | |
1729 | ||
1730 | static | |
50842bdc PP |
1731 | enum bt_notif_iter_status read_stream_event_context_begin_state( |
1732 | struct bt_notif_iter *notit) | |
e98a2d6e | 1733 | { |
50842bdc PP |
1734 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1735 | struct bt_field_type *stream_event_context_type; | |
e98a2d6e | 1736 | |
d6b8c7f1 | 1737 | stream_event_context_type = |
2ae62650 | 1738 | bt_stream_class_borrow_event_context_field_type( |
d6b8c7f1 | 1739 | notit->meta.stream_class); |
e98a2d6e | 1740 | if (!stream_event_context_type) { |
835b2d10 | 1741 | notit->state = STATE_DSCOPE_EVENT_CONTEXT_BEGIN; |
e98a2d6e PP |
1742 | goto end; |
1743 | } | |
1744 | ||
a7252d9c PP |
1745 | BT_ASSERT(!notit->dscopes.stream_event_context); |
1746 | notit->dscopes.stream_event_context = | |
1747 | bt_event_borrow_stream_event_context(notit->event); | |
1748 | BT_ASSERT(notit->dscopes.stream_event_context); | |
fdf0e7a0 PP |
1749 | BT_LOGV("Decoding stream event context field: " |
1750 | "notit-addr=%p, stream-class-addr=%p, " | |
1751 | "stream-class-name=\"%s\", stream-class-id=%" PRId64 ", " | |
1752 | "ft-addr=%p", | |
1753 | notit, notit->meta.stream_class, | |
50842bdc PP |
1754 | bt_stream_class_get_name(notit->meta.stream_class), |
1755 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 | 1756 | stream_event_context_type); |
e98a2d6e PP |
1757 | status = read_dscope_begin_state(notit, stream_event_context_type, |
1758 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN, | |
1759 | STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE, | |
a7252d9c | 1760 | notit->dscopes.stream_event_context); |
fdf0e7a0 PP |
1761 | if (status < 0) { |
1762 | BT_LOGW("Cannot decode stream event context field: " | |
1763 | "notit-addr=%p, stream-class-addr=%p, " | |
1764 | "stream-class-name=\"%s\", " | |
1765 | "stream-class-id=%" PRId64 ", ft-addr=%p", | |
1766 | notit, notit->meta.stream_class, | |
50842bdc PP |
1767 | bt_stream_class_get_name(notit->meta.stream_class), |
1768 | bt_stream_class_get_id(notit->meta.stream_class), | |
fdf0e7a0 PP |
1769 | stream_event_context_type); |
1770 | } | |
e98a2d6e PP |
1771 | |
1772 | end: | |
e98a2d6e PP |
1773 | return status; |
1774 | } | |
1775 | ||
1776 | static | |
50842bdc PP |
1777 | enum bt_notif_iter_status read_stream_event_context_continue_state( |
1778 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1779 | { |
1780 | return read_dscope_continue_state(notit, | |
1781 | STATE_DSCOPE_EVENT_CONTEXT_BEGIN); | |
1782 | } | |
1783 | ||
1784 | static | |
50842bdc PP |
1785 | enum bt_notif_iter_status read_event_context_begin_state( |
1786 | struct bt_notif_iter *notit) | |
e98a2d6e | 1787 | { |
50842bdc PP |
1788 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1789 | struct bt_field_type *event_context_type; | |
e98a2d6e | 1790 | |
2ae62650 | 1791 | event_context_type = bt_event_class_borrow_context_field_type( |
e98a2d6e PP |
1792 | notit->meta.event_class); |
1793 | if (!event_context_type) { | |
835b2d10 | 1794 | notit->state = STATE_DSCOPE_EVENT_PAYLOAD_BEGIN; |
e98a2d6e PP |
1795 | goto end; |
1796 | } | |
fdf0e7a0 | 1797 | |
a7252d9c PP |
1798 | BT_ASSERT(!notit->dscopes.event_context); |
1799 | notit->dscopes.event_context = bt_event_borrow_context(notit->event); | |
1800 | BT_ASSERT(notit->dscopes.event_context); | |
fdf0e7a0 PP |
1801 | BT_LOGV("Decoding event context field: " |
1802 | "notit-addr=%p, event-class-addr=%p, " | |
1803 | "event-class-name=\"%s\", event-class-id=%" PRId64 ", " | |
1804 | "ft-addr=%p", | |
1805 | notit, notit->meta.event_class, | |
50842bdc PP |
1806 | bt_event_class_get_name(notit->meta.event_class), |
1807 | bt_event_class_get_id(notit->meta.event_class), | |
fdf0e7a0 | 1808 | event_context_type); |
e98a2d6e PP |
1809 | status = read_dscope_begin_state(notit, event_context_type, |
1810 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, | |
1811 | STATE_DSCOPE_EVENT_CONTEXT_CONTINUE, | |
a7252d9c | 1812 | notit->dscopes.event_context); |
fdf0e7a0 PP |
1813 | if (status < 0) { |
1814 | BT_LOGW("Cannot decode event context field: " | |
1815 | "notit-addr=%p, event-class-addr=%p, " | |
1816 | "event-class-name=\"%s\", " | |
1817 | "event-class-id=%" PRId64 ", ft-addr=%p", | |
1818 | notit, notit->meta.event_class, | |
50842bdc PP |
1819 | bt_event_class_get_name(notit->meta.event_class), |
1820 | bt_event_class_get_id(notit->meta.event_class), | |
fdf0e7a0 PP |
1821 | event_context_type); |
1822 | } | |
e98a2d6e PP |
1823 | |
1824 | end: | |
e98a2d6e PP |
1825 | return status; |
1826 | } | |
1827 | ||
1828 | static | |
50842bdc PP |
1829 | enum bt_notif_iter_status read_event_context_continue_state( |
1830 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1831 | { |
1832 | return read_dscope_continue_state(notit, | |
1833 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN); | |
1834 | } | |
1835 | ||
1836 | static | |
50842bdc PP |
1837 | enum bt_notif_iter_status read_event_payload_begin_state( |
1838 | struct bt_notif_iter *notit) | |
e98a2d6e | 1839 | { |
50842bdc PP |
1840 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
1841 | struct bt_field_type *event_payload_type; | |
e98a2d6e | 1842 | |
2ae62650 | 1843 | event_payload_type = bt_event_class_borrow_payload_field_type( |
e98a2d6e PP |
1844 | notit->meta.event_class); |
1845 | if (!event_payload_type) { | |
835b2d10 | 1846 | notit->state = STATE_EMIT_NOTIF_EVENT; |
e98a2d6e PP |
1847 | goto end; |
1848 | } | |
1849 | ||
a7252d9c PP |
1850 | BT_ASSERT(!notit->dscopes.event_payload); |
1851 | notit->dscopes.event_payload = bt_event_borrow_payload(notit->event); | |
1852 | BT_ASSERT(notit->dscopes.event_payload); | |
fdf0e7a0 PP |
1853 | BT_LOGV("Decoding event payload field: " |
1854 | "notit-addr=%p, event-class-addr=%p, " | |
1855 | "event-class-name=\"%s\", event-class-id=%" PRId64 ", " | |
1856 | "ft-addr=%p", | |
1857 | notit, notit->meta.event_class, | |
50842bdc PP |
1858 | bt_event_class_get_name(notit->meta.event_class), |
1859 | bt_event_class_get_id(notit->meta.event_class), | |
fdf0e7a0 | 1860 | event_payload_type); |
e98a2d6e PP |
1861 | status = read_dscope_begin_state(notit, event_payload_type, |
1862 | STATE_EMIT_NOTIF_EVENT, | |
1863 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
a7252d9c | 1864 | notit->dscopes.event_payload); |
fdf0e7a0 PP |
1865 | if (status < 0) { |
1866 | BT_LOGW("Cannot decode event payload field: " | |
1867 | "notit-addr=%p, event-class-addr=%p, " | |
1868 | "event-class-name=\"%s\", " | |
1869 | "event-class-id=%" PRId64 ", ft-addr=%p", | |
1870 | notit, notit->meta.event_class, | |
50842bdc PP |
1871 | bt_event_class_get_name(notit->meta.event_class), |
1872 | bt_event_class_get_id(notit->meta.event_class), | |
fdf0e7a0 PP |
1873 | event_payload_type); |
1874 | } | |
e98a2d6e PP |
1875 | |
1876 | end: | |
e98a2d6e PP |
1877 | return status; |
1878 | } | |
1879 | ||
1880 | static | |
50842bdc PP |
1881 | enum bt_notif_iter_status read_event_payload_continue_state( |
1882 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1883 | { |
1884 | return read_dscope_continue_state(notit, STATE_EMIT_NOTIF_EVENT); | |
1885 | } | |
1886 | ||
1887 | static | |
50842bdc PP |
1888 | enum bt_notif_iter_status skip_packet_padding_state( |
1889 | struct bt_notif_iter *notit) | |
e98a2d6e | 1890 | { |
50842bdc | 1891 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e PP |
1892 | size_t bits_to_skip; |
1893 | ||
1d2f35fd | 1894 | BT_ASSERT(notit->cur_packet_size > 0); |
e98a2d6e PP |
1895 | bits_to_skip = notit->cur_packet_size - packet_at(notit); |
1896 | if (bits_to_skip == 0) { | |
1897 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1898 | goto end; | |
1899 | } else { | |
1900 | size_t bits_to_consume; | |
fdf0e7a0 PP |
1901 | |
1902 | BT_LOGV("Trying to skip %zu bits of padding: notit-addr=%p, size=%zu", | |
1903 | bits_to_skip, notit, bits_to_skip); | |
e98a2d6e | 1904 | status = buf_ensure_available_bits(notit); |
50842bdc | 1905 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
e98a2d6e PP |
1906 | goto end; |
1907 | } | |
1908 | ||
1909 | bits_to_consume = MIN(buf_available_bits(notit), bits_to_skip); | |
fdf0e7a0 PP |
1910 | BT_LOGV("Skipping %zu bits of padding: notit-addr=%p, size=%zu", |
1911 | bits_to_consume, notit, bits_to_consume); | |
e98a2d6e PP |
1912 | buf_consume_bits(notit, bits_to_consume); |
1913 | bits_to_skip = notit->cur_packet_size - packet_at(notit); | |
1914 | if (bits_to_skip == 0) { | |
1915 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1916 | goto end; | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | end: | |
1921 | return status; | |
1922 | } | |
1923 | ||
1924 | static inline | |
50842bdc | 1925 | enum bt_notif_iter_status handle_state(struct bt_notif_iter *notit) |
e98a2d6e | 1926 | { |
50842bdc | 1927 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
fdf0e7a0 | 1928 | const enum state state = notit->state; |
e98a2d6e | 1929 | |
fdf0e7a0 PP |
1930 | BT_LOGV("Handling state: notit-addr=%p, state=%s", |
1931 | notit, state_string(state)); | |
e98a2d6e PP |
1932 | |
1933 | // TODO: optimalize! | |
fdf0e7a0 | 1934 | switch (state) { |
e98a2d6e PP |
1935 | case STATE_INIT: |
1936 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1937 | break; | |
1938 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
1939 | status = read_packet_header_begin_state(notit); | |
1940 | break; | |
1941 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
1942 | status = read_packet_header_continue_state(notit); | |
1943 | break; | |
1944 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
1945 | status = after_packet_header_state(notit); | |
1946 | break; | |
1947 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
1948 | status = read_packet_context_begin_state(notit); | |
1949 | break; | |
1950 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
1951 | status = read_packet_context_continue_state(notit); | |
1952 | break; | |
1953 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
1954 | status = after_packet_context_state(notit); | |
1955 | break; | |
9412b331 PP |
1956 | case STATE_EMIT_NOTIF_NEW_STREAM: |
1957 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
1958 | break; | |
e98a2d6e PP |
1959 | case STATE_EMIT_NOTIF_NEW_PACKET: |
1960 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1961 | break; | |
1962 | case STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN: | |
1963 | status = read_event_header_begin_state(notit); | |
1964 | break; | |
1965 | case STATE_DSCOPE_STREAM_EVENT_HEADER_CONTINUE: | |
1966 | status = read_event_header_continue_state(notit); | |
1967 | break; | |
1968 | case STATE_AFTER_STREAM_EVENT_HEADER: | |
1969 | status = after_event_header_state(notit); | |
1970 | break; | |
1971 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_BEGIN: | |
1972 | status = read_stream_event_context_begin_state(notit); | |
1973 | break; | |
1974 | case STATE_DSCOPE_STREAM_EVENT_CONTEXT_CONTINUE: | |
1975 | status = read_stream_event_context_continue_state(notit); | |
1976 | break; | |
1977 | case STATE_DSCOPE_EVENT_CONTEXT_BEGIN: | |
1978 | status = read_event_context_begin_state(notit); | |
1979 | break; | |
1980 | case STATE_DSCOPE_EVENT_CONTEXT_CONTINUE: | |
1981 | status = read_event_context_continue_state(notit); | |
1982 | break; | |
1983 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: | |
1984 | status = read_event_payload_begin_state(notit); | |
1985 | break; | |
1986 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
1987 | status = read_event_payload_continue_state(notit); | |
1988 | break; | |
1989 | case STATE_EMIT_NOTIF_EVENT: | |
1990 | notit->state = STATE_DSCOPE_STREAM_EVENT_HEADER_BEGIN; | |
1991 | break; | |
1992 | case STATE_SKIP_PACKET_PADDING: | |
1993 | status = skip_packet_padding_state(notit); | |
1994 | break; | |
1995 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
1996 | notit->state = STATE_SKIP_PACKET_PADDING; | |
1997 | break; | |
fdf0e7a0 PP |
1998 | default: |
1999 | BT_LOGD("Unknown CTF plugin notification iterator state: " | |
2000 | "notit-addr=%p, state=%d", notit, notit->state); | |
2001 | abort(); | |
e98a2d6e PP |
2002 | } |
2003 | ||
fdf0e7a0 PP |
2004 | BT_LOGV("Handled state: notit-addr=%p, status=%s, " |
2005 | "prev-state=%s, cur-state=%s", | |
50842bdc | 2006 | notit, bt_notif_iter_status_string(status), |
fdf0e7a0 | 2007 | state_string(state), state_string(notit->state)); |
e98a2d6e PP |
2008 | return status; |
2009 | } | |
2010 | ||
2cf1d51e JG |
2011 | /** |
2012 | * Resets the internal state of a CTF notification iterator. | |
2cf1d51e | 2013 | */ |
9412b331 | 2014 | BT_HIDDEN |
50842bdc | 2015 | void bt_notif_iter_reset(struct bt_notif_iter *notit) |
e98a2d6e | 2016 | { |
1d2f35fd | 2017 | BT_ASSERT(notit); |
fdf0e7a0 | 2018 | BT_LOGD("Resetting notification iterator: addr=%p", notit); |
e98a2d6e | 2019 | stack_clear(notit->stack); |
2ae62650 PP |
2020 | notit->meta.stream_class = NULL; |
2021 | notit->meta.event_class = NULL; | |
e98a2d6e | 2022 | BT_PUT(notit->packet); |
af87daef | 2023 | BT_PUT(notit->stream); |
a7252d9c PP |
2024 | BT_PUT(notit->event_notif); |
2025 | release_all_dscopes(notit); | |
2026 | notit->cur_dscope_field = NULL; | |
2027 | ||
2028 | if (notit->packet_header_field) { | |
2029 | bt_packet_header_field_release(notit->packet_header_field); | |
2030 | notit->packet_header_field = NULL; | |
2031 | } | |
2032 | ||
2033 | if (notit->packet_context_field) { | |
2034 | bt_packet_context_field_release(notit->packet_context_field); | |
2035 | notit->packet_context_field = NULL; | |
2036 | } | |
2037 | ||
2038 | if (notit->event_header_field) { | |
2039 | bt_event_header_field_release(notit->event_header_field); | |
2040 | notit->event_header_field = NULL; | |
2041 | } | |
2042 | ||
e98a2d6e PP |
2043 | notit->buf.addr = NULL; |
2044 | notit->buf.sz = 0; | |
2045 | notit->buf.at = 0; | |
2b186c3e | 2046 | notit->buf.last_eh_at = SIZE_MAX; |
e98a2d6e PP |
2047 | notit->buf.packet_offset = 0; |
2048 | notit->state = STATE_INIT; | |
2049 | notit->cur_content_size = -1; | |
2050 | notit->cur_packet_size = -1; | |
9e0c8dbb | 2051 | notit->cur_packet_offset = -1; |
fb8afeef PP |
2052 | reset_clock_value(¬it->cur_packet_begin_cv); |
2053 | reset_clock_value(¬it->cur_packet_end_cv); | |
9412b331 | 2054 | notit->stream_begin_emitted = false; |
a7252d9c | 2055 | notit->cur_timestamp_end = NULL; |
e98a2d6e PP |
2056 | } |
2057 | ||
2cf1d51e | 2058 | static |
50842bdc | 2059 | int bt_notif_iter_switch_packet(struct bt_notif_iter *notit) |
2cf1d51e JG |
2060 | { |
2061 | int ret = 0; | |
2062 | ||
115de887 PP |
2063 | /* |
2064 | * We don't put the stream class here because we need to make | |
2065 | * sure that all the packets processed by the same notification | |
2066 | * iterator refer to the same stream class (the first one). | |
2067 | */ | |
1d2f35fd | 2068 | BT_ASSERT(notit); |
a7252d9c | 2069 | |
9e0c8dbb JG |
2070 | if (notit->cur_packet_size != -1) { |
2071 | notit->cur_packet_offset += notit->cur_packet_size; | |
2072 | } | |
a7252d9c | 2073 | |
9e0c8dbb JG |
2074 | BT_LOGV("Switching packet: notit-addr=%p, cur=%zu, " |
2075 | "packet-offset=%" PRId64, notit, notit->buf.at, | |
2076 | notit->cur_packet_offset); | |
2cf1d51e | 2077 | stack_clear(notit->stack); |
2ae62650 | 2078 | notit->meta.event_class = NULL; |
2cf1d51e | 2079 | BT_PUT(notit->packet); |
a7252d9c PP |
2080 | BT_PUT(notit->event_notif); |
2081 | notit->cur_timestamp_end = NULL; | |
2082 | release_all_dscopes(notit); | |
2083 | notit->cur_dscope_field = NULL; | |
2cf1d51e JG |
2084 | |
2085 | /* | |
2086 | * Adjust current buffer so that addr points to the beginning of the new | |
2087 | * packet. | |
2088 | */ | |
2089 | if (notit->buf.addr) { | |
2090 | size_t consumed_bytes = (size_t) (notit->buf.at / CHAR_BIT); | |
2091 | ||
2092 | /* Packets are assumed to start on a byte frontier. */ | |
2093 | if (notit->buf.at % CHAR_BIT) { | |
fdf0e7a0 PP |
2094 | BT_LOGW("Cannot switch packet: current position is not a multiple of 8: " |
2095 | "notit-addr=%p, cur=%zu", notit, notit->buf.at); | |
2cf1d51e JG |
2096 | ret = -1; |
2097 | goto end; | |
2098 | } | |
2099 | ||
2100 | notit->buf.addr += consumed_bytes; | |
2101 | notit->buf.sz -= consumed_bytes; | |
2102 | notit->buf.at = 0; | |
2103 | notit->buf.packet_offset = 0; | |
fdf0e7a0 PP |
2104 | BT_LOGV("Adjusted buffer: addr=%p, size=%zu", |
2105 | notit->buf.addr, notit->buf.sz); | |
2cf1d51e JG |
2106 | } |
2107 | ||
2108 | notit->cur_content_size = -1; | |
2109 | notit->cur_packet_size = -1; | |
fb8afeef PP |
2110 | reset_clock_value(¬it->cur_packet_begin_cv); |
2111 | reset_clock_value(¬it->cur_packet_end_cv); | |
5f870343 | 2112 | notit->cur_sc_field_path_cache = NULL; |
fdf0e7a0 | 2113 | |
2cf1d51e JG |
2114 | end: |
2115 | return ret; | |
2116 | } | |
2117 | ||
e98a2d6e | 2118 | static |
a7252d9c | 2119 | struct bt_field *borrow_next_field(struct bt_notif_iter *notit) |
e98a2d6e | 2120 | { |
50842bdc PP |
2121 | struct bt_field *next_field = NULL; |
2122 | struct bt_field *base_field; | |
2123 | struct bt_field_type *base_type; | |
e98a2d6e PP |
2124 | size_t index; |
2125 | ||
1d2f35fd | 2126 | BT_ASSERT(!stack_empty(notit->stack)); |
e98a2d6e PP |
2127 | index = stack_top(notit->stack)->index; |
2128 | base_field = stack_top(notit->stack)->base; | |
1d2f35fd | 2129 | BT_ASSERT(base_field); |
2ae62650 | 2130 | base_type = bt_field_borrow_type(base_field); |
1d2f35fd | 2131 | BT_ASSERT(base_type); |
e98a2d6e | 2132 | |
50842bdc PP |
2133 | switch (bt_field_type_get_type_id(base_type)) { |
2134 | case BT_FIELD_TYPE_ID_STRUCT: | |
9412b331 | 2135 | { |
a7252d9c | 2136 | next_field = bt_field_structure_borrow_field_by_index( |
e98a2d6e PP |
2137 | base_field, index); |
2138 | break; | |
9412b331 | 2139 | } |
50842bdc | 2140 | case BT_FIELD_TYPE_ID_ARRAY: |
a7252d9c | 2141 | next_field = bt_field_array_borrow_field(base_field, index); |
e98a2d6e | 2142 | break; |
50842bdc | 2143 | case BT_FIELD_TYPE_ID_SEQUENCE: |
a7252d9c | 2144 | next_field = bt_field_sequence_borrow_field(base_field, index); |
e98a2d6e | 2145 | break; |
50842bdc | 2146 | case BT_FIELD_TYPE_ID_VARIANT: |
a7252d9c | 2147 | next_field = bt_field_variant_borrow_current_field(base_field); |
e98a2d6e PP |
2148 | break; |
2149 | default: | |
fdf0e7a0 PP |
2150 | BT_LOGF("Unknown base field type ID: " |
2151 | "notit-addr=%p, ft-addr=%p, ft-id=%s", | |
2152 | notit, base_type, | |
d6b8c7f1 | 2153 | bt_common_field_type_id_string( |
50842bdc | 2154 | bt_field_type_get_type_id(base_type))); |
0fbb9a9f | 2155 | abort(); |
e98a2d6e PP |
2156 | } |
2157 | ||
e98a2d6e PP |
2158 | return next_field; |
2159 | } | |
2160 | ||
c44c3e70 | 2161 | static |
a7252d9c PP |
2162 | void update_clock_state(uint64_t *state, struct bt_field *value_field, |
2163 | struct bt_field_type *value_type) | |
c44c3e70 | 2164 | { |
c44c3e70 JG |
2165 | uint64_t requested_new_value; |
2166 | uint64_t requested_new_value_mask; | |
2167 | uint64_t cur_value_masked; | |
2168 | int requested_new_value_size; | |
2169 | int ret; | |
2170 | ||
1d2f35fd PP |
2171 | BT_ASSERT(value_type); |
2172 | BT_ASSERT(bt_field_type_is_integer(value_type)); | |
c44c3e70 | 2173 | requested_new_value_size = |
50842bdc | 2174 | bt_field_type_integer_get_size(value_type); |
1d2f35fd | 2175 | BT_ASSERT(requested_new_value_size > 0); |
d6b8c7f1 | 2176 | ret = bt_field_integer_unsigned_get_value(value_field, |
c44c3e70 | 2177 | &requested_new_value); |
1d2f35fd | 2178 | BT_ASSERT(!ret); |
c44c3e70 JG |
2179 | |
2180 | /* | |
2181 | * Special case for a 64-bit new value, which is the limit | |
2182 | * of a clock value as of this version: overwrite the | |
2183 | * current value directly. | |
2184 | */ | |
2185 | if (requested_new_value_size == 64) { | |
2186 | *state = requested_new_value; | |
2187 | goto end; | |
2188 | } | |
2189 | ||
2190 | requested_new_value_mask = (1ULL << requested_new_value_size) - 1; | |
2191 | cur_value_masked = *state & requested_new_value_mask; | |
2192 | ||
2193 | if (requested_new_value < cur_value_masked) { | |
2194 | /* | |
2195 | * It looks like a wrap happened on the number of bits | |
2196 | * of the requested new value. Assume that the clock | |
2197 | * value wrapped only one time. | |
2198 | */ | |
2199 | *state += requested_new_value_mask + 1; | |
2200 | } | |
2201 | ||
2202 | /* Clear the low bits of the current clock value. */ | |
2203 | *state &= ~requested_new_value_mask; | |
2204 | ||
2205 | /* Set the low bits of the current clock value. */ | |
2206 | *state |= requested_new_value; | |
2ae62650 | 2207 | |
c44c3e70 | 2208 | end: |
fdf0e7a0 PP |
2209 | BT_LOGV("Updated clock's value from integer field's value: " |
2210 | "value=%" PRIu64, *state); | |
c44c3e70 JG |
2211 | } |
2212 | ||
2213 | static | |
50842bdc PP |
2214 | enum bt_btr_status update_clock(struct bt_notif_iter *notit, |
2215 | struct bt_field *int_field) | |
c44c3e70 | 2216 | { |
ac0c6bdd | 2217 | gboolean clock_class_found; |
8cb1fb66 | 2218 | uint64_t *clock_state = NULL; |
50842bdc PP |
2219 | struct bt_field_type *int_field_type = NULL; |
2220 | enum bt_btr_status ret = BT_BTR_STATUS_OK; | |
2221 | struct bt_clock_class *clock_class = NULL; | |
c44c3e70 | 2222 | |
2ae62650 | 2223 | int_field_type = bt_field_borrow_type(int_field); |
1d2f35fd | 2224 | BT_ASSERT(int_field_type); |
a7252d9c PP |
2225 | |
2226 | if (bt_field_type_is_enumeration(int_field_type)) { | |
2227 | int_field_type = | |
2228 | bt_field_type_enumeration_borrow_container_field_type( | |
2229 | int_field_type); | |
2230 | } | |
2231 | ||
2ae62650 | 2232 | clock_class = bt_field_type_integer_borrow_mapped_clock_class( |
f45bfe88 | 2233 | int_field_type); |
ac0c6bdd | 2234 | if (likely(!clock_class)) { |
f45bfe88 | 2235 | goto end; |
c44c3e70 JG |
2236 | } |
2237 | ||
ac0c6bdd | 2238 | clock_class_found = g_hash_table_lookup_extended(notit->clock_states, |
fdf0e7a0 | 2239 | clock_class, NULL, (gpointer) &clock_state); |
8cb1fb66 | 2240 | if (!clock_class_found) { |
c44c3e70 JG |
2241 | clock_state = g_new0(uint64_t, 1); |
2242 | if (!clock_state) { | |
fdf0e7a0 | 2243 | BT_LOGE_STR("Failed to allocate a uint64_t."); |
50842bdc | 2244 | ret = BT_BTR_STATUS_ENOMEM; |
c44c3e70 JG |
2245 | goto end; |
2246 | } | |
fdf0e7a0 | 2247 | |
2ae62650 | 2248 | g_hash_table_insert(notit->clock_states, clock_class, |
fdf0e7a0 | 2249 | clock_state); |
c44c3e70 JG |
2250 | } |
2251 | ||
2252 | /* Update the clock's state. */ | |
fdf0e7a0 PP |
2253 | BT_LOGV("Updating notification iterator's clock's value from integer field: " |
2254 | "notit-addr=%p, clock-class-addr=%p, " | |
2255 | "clock-class-name=\"%s\", value=%" PRIu64, | |
2256 | notit, clock_class, | |
50842bdc | 2257 | bt_clock_class_get_name(clock_class), *clock_state); |
a7252d9c | 2258 | update_clock_state(clock_state, int_field, int_field_type); |
2ae62650 | 2259 | |
c44c3e70 | 2260 | end: |
c44c3e70 JG |
2261 | return ret; |
2262 | } | |
2263 | ||
e98a2d6e | 2264 | static |
50842bdc PP |
2265 | enum bt_btr_status btr_unsigned_int_common(uint64_t value, |
2266 | struct bt_field_type *type, void *data, | |
a7252d9c | 2267 | struct bt_field **out_field) |
50842bdc PP |
2268 | { |
2269 | enum bt_btr_status status = BT_BTR_STATUS_OK; | |
2270 | struct bt_field *field = NULL; | |
50842bdc | 2271 | struct bt_notif_iter *notit = data; |
e98a2d6e PP |
2272 | int ret; |
2273 | ||
fdf0e7a0 PP |
2274 | BT_LOGV("Common unsigned integer function called from BTR: " |
2275 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2276 | "ft-id=%s, value=%" PRIu64, | |
2277 | notit, notit->btr, type, | |
d6b8c7f1 | 2278 | bt_common_field_type_id_string( |
50842bdc | 2279 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2280 | value); |
a7252d9c | 2281 | field = borrow_next_field(notit); |
e98a2d6e | 2282 | if (!field) { |
a7252d9c | 2283 | BT_LOGW("Cannot borrow next field: notit-addr=%p", notit); |
50842bdc | 2284 | status = BT_BTR_STATUS_ERROR; |
a7252d9c | 2285 | goto end; |
e98a2d6e PP |
2286 | } |
2287 | ||
a7252d9c PP |
2288 | BT_ASSERT(bt_field_is_integer(field) || bt_field_is_enumeration(field)); |
2289 | ret = bt_field_integer_unsigned_set_value(field, value); | |
1d2f35fd | 2290 | BT_ASSERT(ret == 0); |
e98a2d6e | 2291 | stack_top(notit->stack)->index++; |
a7252d9c | 2292 | *out_field = field; |
fdf0e7a0 | 2293 | |
a7252d9c | 2294 | end: |
e98a2d6e PP |
2295 | return status; |
2296 | } | |
2297 | ||
5f870343 | 2298 | static |
50842bdc PP |
2299 | enum bt_btr_status btr_timestamp_end_cb(void *value, |
2300 | struct bt_field_type *type, void *data) | |
5f870343 | 2301 | { |
50842bdc PP |
2302 | enum bt_btr_status status; |
2303 | struct bt_field *field = NULL; | |
2304 | struct bt_notif_iter *notit = data; | |
a7252d9c | 2305 | uint64_t uvalue = *((uint64_t *) value); |
5f870343 | 2306 | |
fdf0e7a0 PP |
2307 | BT_LOGV("`timestamp_end` unsigned integer function called from BTR: " |
2308 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2309 | "ft-id=%s", | |
2310 | notit, notit->btr, type, | |
d6b8c7f1 | 2311 | bt_common_field_type_id_string( |
50842bdc | 2312 | bt_field_type_get_type_id(type))); |
5f870343 | 2313 | |
a7252d9c PP |
2314 | status = btr_unsigned_int_common(uvalue, type, data, &field); |
2315 | ||
2316 | /* Set as the current packet's end timestamp field */ | |
2317 | notit->cur_timestamp_end = field; | |
5f870343 JG |
2318 | return status; |
2319 | } | |
2320 | ||
e98a2d6e | 2321 | static |
50842bdc PP |
2322 | enum bt_btr_status btr_unsigned_int_cb(uint64_t value, |
2323 | struct bt_field_type *type, void *data) | |
5f870343 | 2324 | { |
50842bdc PP |
2325 | struct bt_notif_iter *notit = data; |
2326 | enum bt_btr_status status = BT_BTR_STATUS_OK; | |
2327 | struct bt_field *field = NULL; | |
5f870343 JG |
2328 | struct field_cb_override *override; |
2329 | ||
fdf0e7a0 PP |
2330 | BT_LOGV("Unsigned integer function called from BTR: " |
2331 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2332 | "ft-id=%s, value=%" PRIu64, | |
2333 | notit, notit->btr, type, | |
d6b8c7f1 | 2334 | bt_common_field_type_id_string( |
50842bdc | 2335 | bt_field_type_get_type_id(type)), |
fdf0e7a0 PP |
2336 | value); |
2337 | override = g_hash_table_lookup(notit->field_overrides, type); | |
5f870343 | 2338 | if (unlikely(override)) { |
fdf0e7a0 | 2339 | /* Override function logs errors */ |
5f870343 JG |
2340 | status = override->func(&value, type, override->data); |
2341 | goto end; | |
2342 | } | |
2343 | ||
2344 | status = btr_unsigned_int_common(value, type, data, &field); | |
50842bdc | 2345 | if (status != BT_BTR_STATUS_OK) { |
fdf0e7a0 | 2346 | /* btr_unsigned_int_common() logs errors */ |
5f870343 JG |
2347 | goto end; |
2348 | } | |
2349 | ||
f45bfe88 | 2350 | status = update_clock(notit, field); |
a7252d9c | 2351 | |
5f870343 JG |
2352 | end: |
2353 | return status; | |
2354 | } | |
2355 | ||
2356 | static | |
50842bdc PP |
2357 | enum bt_btr_status btr_signed_int_cb(int64_t value, |
2358 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2359 | { |
50842bdc PP |
2360 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2361 | struct bt_field *field = NULL; | |
50842bdc | 2362 | struct bt_notif_iter *notit = data; |
e98a2d6e PP |
2363 | int ret; |
2364 | ||
fdf0e7a0 PP |
2365 | BT_LOGV("Signed integer function called from BTR: " |
2366 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2367 | "ft-id=%s, value=%" PRId64, | |
2368 | notit, notit->btr, type, | |
d6b8c7f1 | 2369 | bt_common_field_type_id_string( |
50842bdc | 2370 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2371 | value); |
a7252d9c | 2372 | field = borrow_next_field(notit); |
e98a2d6e | 2373 | if (!field) { |
a7252d9c | 2374 | BT_LOGW("Cannot borrow next field: notit-addr=%p", notit); |
50842bdc | 2375 | status = BT_BTR_STATUS_ERROR; |
a7252d9c | 2376 | goto end; |
e98a2d6e PP |
2377 | } |
2378 | ||
a7252d9c PP |
2379 | BT_ASSERT(bt_field_is_integer(field) || bt_field_is_enumeration(field)); |
2380 | ret = bt_field_integer_signed_set_value(field, value); | |
2381 | BT_ASSERT(ret == 0); | |
e98a2d6e | 2382 | stack_top(notit->stack)->index++; |
fdf0e7a0 | 2383 | |
a7252d9c | 2384 | end: |
e98a2d6e PP |
2385 | return status; |
2386 | } | |
2387 | ||
2388 | static | |
50842bdc PP |
2389 | enum bt_btr_status btr_floating_point_cb(double value, |
2390 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2391 | { |
50842bdc PP |
2392 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2393 | struct bt_field *field = NULL; | |
2394 | struct bt_notif_iter *notit = data; | |
e98a2d6e PP |
2395 | int ret; |
2396 | ||
fdf0e7a0 PP |
2397 | BT_LOGV("Floating point number function called from BTR: " |
2398 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2399 | "ft-id=%s, value=%f", | |
2400 | notit, notit->btr, type, | |
d6b8c7f1 | 2401 | bt_common_field_type_id_string( |
50842bdc | 2402 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2403 | value); |
a7252d9c | 2404 | field = borrow_next_field(notit); |
e98a2d6e | 2405 | if (!field) { |
a7252d9c | 2406 | BT_LOGW("Cannot borrow next field: notit-addr=%p", notit); |
50842bdc | 2407 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2408 | goto end; |
2409 | } | |
2410 | ||
50842bdc | 2411 | ret = bt_field_floating_point_set_value(field, value); |
1d2f35fd | 2412 | BT_ASSERT(!ret); |
e98a2d6e PP |
2413 | stack_top(notit->stack)->index++; |
2414 | ||
2415 | end: | |
e98a2d6e PP |
2416 | return status; |
2417 | } | |
2418 | ||
2419 | static | |
50842bdc PP |
2420 | enum bt_btr_status btr_string_begin_cb( |
2421 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2422 | { |
50842bdc PP |
2423 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2424 | struct bt_field *field = NULL; | |
2425 | struct bt_notif_iter *notit = data; | |
e98a2d6e PP |
2426 | int ret; |
2427 | ||
fdf0e7a0 PP |
2428 | BT_LOGV("String (beginning) function called from BTR: " |
2429 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2430 | "ft-id=%s", | |
2431 | notit, notit->btr, type, | |
d6b8c7f1 | 2432 | bt_common_field_type_id_string( |
50842bdc | 2433 | bt_field_type_get_type_id(type))); |
a7252d9c | 2434 | field = borrow_next_field(notit); |
e98a2d6e | 2435 | if (!field) { |
fdf0e7a0 | 2436 | BT_LOGW("Cannot get next field: notit-addr=%p", notit); |
50842bdc | 2437 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2438 | goto end; |
2439 | } | |
2440 | ||
a7252d9c PP |
2441 | ret = bt_field_string_clear(field); |
2442 | BT_ASSERT(ret == 0); | |
2443 | ||
e98a2d6e PP |
2444 | /* |
2445 | * Push on stack. Not a compound type per se, but we know that only | |
2446 | * btr_string_cb() may be called between this call and a subsequent | |
2447 | * call to btr_string_end_cb(). | |
2448 | */ | |
2449 | ret = stack_push(notit->stack, field); | |
2450 | if (ret) { | |
fdf0e7a0 PP |
2451 | BT_LOGE("Cannot push string field on stack: " |
2452 | "notit-addr=%p, field-addr=%p", notit, field); | |
50842bdc | 2453 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2454 | goto end; |
2455 | } | |
2456 | ||
2457 | end: | |
e98a2d6e PP |
2458 | return status; |
2459 | } | |
2460 | ||
2461 | static | |
50842bdc PP |
2462 | enum bt_btr_status btr_string_cb(const char *value, |
2463 | size_t len, struct bt_field_type *type, void *data) | |
e98a2d6e | 2464 | { |
50842bdc PP |
2465 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2466 | struct bt_field *field = NULL; | |
2467 | struct bt_notif_iter *notit = data; | |
e98a2d6e PP |
2468 | int ret; |
2469 | ||
fdf0e7a0 PP |
2470 | BT_LOGV("String (substring) function called from BTR: " |
2471 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2472 | "ft-id=%s, string-length=%zu", | |
2473 | notit, notit->btr, type, | |
d6b8c7f1 | 2474 | bt_common_field_type_id_string( |
50842bdc | 2475 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2476 | len); |
e98a2d6e | 2477 | field = stack_top(notit->stack)->base; |
1d2f35fd | 2478 | BT_ASSERT(field); |
e98a2d6e | 2479 | |
a7252d9c | 2480 | /* Append current substring */ |
50842bdc | 2481 | ret = bt_field_string_append_len(field, value, len); |
e98a2d6e | 2482 | if (ret) { |
fdf0e7a0 PP |
2483 | BT_LOGE("Cannot append substring to string field's value: " |
2484 | "notit-addr=%p, field-addr=%p, string-length=%zu, " | |
2485 | "ret=%d", notit, field, len, ret); | |
50842bdc | 2486 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2487 | goto end; |
2488 | } | |
2489 | ||
2490 | end: | |
2491 | return status; | |
2492 | } | |
2493 | ||
2494 | static | |
50842bdc PP |
2495 | enum bt_btr_status btr_string_end_cb( |
2496 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2497 | { |
50842bdc | 2498 | struct bt_notif_iter *notit = data; |
e98a2d6e | 2499 | |
fdf0e7a0 PP |
2500 | BT_LOGV("String (end) function called from BTR: " |
2501 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2502 | "ft-id=%s", | |
2503 | notit, notit->btr, type, | |
d6b8c7f1 | 2504 | bt_common_field_type_id_string( |
50842bdc | 2505 | bt_field_type_get_type_id(type))); |
fdf0e7a0 | 2506 | |
e98a2d6e PP |
2507 | /* Pop string field */ |
2508 | stack_pop(notit->stack); | |
2509 | ||
2510 | /* Go to next field */ | |
2511 | stack_top(notit->stack)->index++; | |
50842bdc | 2512 | return BT_BTR_STATUS_OK; |
e98a2d6e PP |
2513 | } |
2514 | ||
50842bdc PP |
2515 | enum bt_btr_status btr_compound_begin_cb( |
2516 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2517 | { |
50842bdc PP |
2518 | enum bt_btr_status status = BT_BTR_STATUS_OK; |
2519 | struct bt_notif_iter *notit = data; | |
2520 | struct bt_field *field; | |
e98a2d6e PP |
2521 | int ret; |
2522 | ||
fdf0e7a0 PP |
2523 | BT_LOGV("Compound (beginning) function called from BTR: " |
2524 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2525 | "ft-id=%s", | |
2526 | notit, notit->btr, type, | |
d6b8c7f1 | 2527 | bt_common_field_type_id_string( |
50842bdc | 2528 | bt_field_type_get_type_id(type))); |
fdf0e7a0 | 2529 | |
a7252d9c | 2530 | /* Borrow field */ |
e98a2d6e | 2531 | if (stack_empty(notit->stack)) { |
a7252d9c PP |
2532 | /* Root: already set by read_dscope_begin_state() */ |
2533 | field = notit->cur_dscope_field; | |
e98a2d6e | 2534 | } else { |
a7252d9c | 2535 | field = borrow_next_field(notit); |
fdf0e7a0 | 2536 | if (!field) { |
a7252d9c | 2537 | BT_LOGW("Cannot borrow next field: notit-addr=%p", notit); |
50842bdc | 2538 | status = BT_BTR_STATUS_ERROR; |
fdf0e7a0 PP |
2539 | goto end; |
2540 | } | |
e98a2d6e PP |
2541 | } |
2542 | ||
2543 | /* Push field */ | |
1d2f35fd | 2544 | BT_ASSERT(field); |
e98a2d6e PP |
2545 | ret = stack_push(notit->stack, field); |
2546 | if (ret) { | |
fdf0e7a0 PP |
2547 | BT_LOGE("Cannot push compound field onto the stack: " |
2548 | "notit-addr=%p, ft-addr=%p, ft-id=%s, ret=%d", | |
2549 | notit, type, | |
d6b8c7f1 | 2550 | bt_common_field_type_id_string( |
50842bdc | 2551 | bt_field_type_get_type_id(type)), |
fdf0e7a0 | 2552 | ret); |
50842bdc | 2553 | status = BT_BTR_STATUS_ERROR; |
e98a2d6e PP |
2554 | goto end; |
2555 | } | |
2556 | ||
2557 | end: | |
e98a2d6e PP |
2558 | return status; |
2559 | } | |
2560 | ||
50842bdc PP |
2561 | enum bt_btr_status btr_compound_end_cb( |
2562 | struct bt_field_type *type, void *data) | |
e98a2d6e | 2563 | { |
50842bdc | 2564 | struct bt_notif_iter *notit = data; |
e98a2d6e | 2565 | |
fdf0e7a0 PP |
2566 | BT_LOGV("Compound (end) function called from BTR: " |
2567 | "notit-addr=%p, btr-addr=%p, ft-addr=%p, " | |
2568 | "ft-id=%s", | |
2569 | notit, notit->btr, type, | |
d6b8c7f1 | 2570 | bt_common_field_type_id_string( |
50842bdc | 2571 | bt_field_type_get_type_id(type))); |
1d2f35fd | 2572 | BT_ASSERT(!stack_empty(notit->stack)); |
e98a2d6e PP |
2573 | |
2574 | /* Pop stack */ | |
2575 | stack_pop(notit->stack); | |
2576 | ||
2577 | /* If the stack is not empty, increment the base's index */ | |
2578 | if (!stack_empty(notit->stack)) { | |
2579 | stack_top(notit->stack)->index++; | |
2580 | } | |
2581 | ||
50842bdc | 2582 | return BT_BTR_STATUS_OK; |
e98a2d6e PP |
2583 | } |
2584 | ||
2585 | static | |
50842bdc PP |
2586 | struct bt_field *resolve_field(struct bt_notif_iter *notit, |
2587 | struct bt_field_path *path) | |
e98a2d6e | 2588 | { |
50842bdc | 2589 | struct bt_field *field = NULL; |
e98a2d6e PP |
2590 | unsigned int i; |
2591 | ||
fdf0e7a0 | 2592 | if (BT_LOG_ON_VERBOSE) { |
50842bdc | 2593 | GString *gstr = bt_field_path_string(path); |
fdf0e7a0 PP |
2594 | |
2595 | BT_LOGV("Resolving field path: notit-addr=%p, field-path=\"%s\"", | |
2596 | notit, gstr ? gstr->str : NULL); | |
2597 | ||
2598 | if (gstr) { | |
2599 | g_string_free(gstr, TRUE); | |
2600 | } | |
2601 | } | |
2602 | ||
50842bdc PP |
2603 | switch (bt_field_path_get_root_scope(path)) { |
2604 | case BT_SCOPE_TRACE_PACKET_HEADER: | |
e98a2d6e PP |
2605 | field = notit->dscopes.trace_packet_header; |
2606 | break; | |
50842bdc | 2607 | case BT_SCOPE_STREAM_PACKET_CONTEXT: |
e98a2d6e PP |
2608 | field = notit->dscopes.stream_packet_context; |
2609 | break; | |
50842bdc | 2610 | case BT_SCOPE_STREAM_EVENT_HEADER: |
e98a2d6e PP |
2611 | field = notit->dscopes.stream_event_header; |
2612 | break; | |
50842bdc | 2613 | case BT_SCOPE_STREAM_EVENT_CONTEXT: |
e98a2d6e PP |
2614 | field = notit->dscopes.stream_event_context; |
2615 | break; | |
50842bdc | 2616 | case BT_SCOPE_EVENT_CONTEXT: |
e98a2d6e PP |
2617 | field = notit->dscopes.event_context; |
2618 | break; | |
50842bdc | 2619 | case BT_SCOPE_EVENT_FIELDS: |
e98a2d6e PP |
2620 | field = notit->dscopes.event_payload; |
2621 | break; | |
2622 | default: | |
fdf0e7a0 PP |
2623 | BT_LOGF("Cannot resolve field path: unknown scope: " |
2624 | "notit-addr=%p, root-scope=%s", | |
d6b8c7f1 | 2625 | notit, bt_common_scope_string( |
50842bdc | 2626 | bt_field_path_get_root_scope(path))); |
fdf0e7a0 | 2627 | abort(); |
e98a2d6e PP |
2628 | } |
2629 | ||
2630 | if (!field) { | |
fdf0e7a0 PP |
2631 | BT_LOGW("Cannot resolve field path: root field not found: " |
2632 | "notit-addr=%p, root-scope=%s", | |
d6b8c7f1 | 2633 | notit, bt_common_scope_string( |
50842bdc | 2634 | bt_field_path_get_root_scope(path))); |
e98a2d6e PP |
2635 | goto end; |
2636 | } | |
2637 | ||
50842bdc PP |
2638 | for (i = 0; i < bt_field_path_get_index_count(path); ++i) { |
2639 | struct bt_field *next_field = NULL; | |
2640 | struct bt_field_type *field_type; | |
2641 | int index = bt_field_path_get_index(path, i); | |
e98a2d6e | 2642 | |
2ae62650 | 2643 | field_type = bt_field_borrow_type(field); |
1d2f35fd | 2644 | BT_ASSERT(field_type); |
e98a2d6e | 2645 | |
a7252d9c PP |
2646 | if (bt_field_type_is_structure(field_type)) { |
2647 | next_field = bt_field_structure_borrow_field_by_index( | |
e98a2d6e | 2648 | field, index); |
a7252d9c | 2649 | } else if (bt_field_type_is_variant(field_type)) { |
e98a2d6e | 2650 | next_field = |
a7252d9c | 2651 | bt_field_variant_borrow_current_field(field); |
e98a2d6e PP |
2652 | } |
2653 | ||
a7252d9c | 2654 | field = NULL; |
e98a2d6e PP |
2655 | |
2656 | if (!next_field) { | |
fdf0e7a0 PP |
2657 | BT_LOGW("Cannot find next field: " |
2658 | "notit-addr=%p, ft-addr=%p, ft-id=%s, index=%d", | |
2659 | notit, field_type, | |
d6b8c7f1 | 2660 | bt_common_field_type_id_string( |
50842bdc | 2661 | bt_field_type_get_type_id(field_type)), |
fdf0e7a0 | 2662 | index); |
e98a2d6e PP |
2663 | goto end; |
2664 | } | |
2665 | ||
2666 | /* Move next field -> field */ | |
a7252d9c | 2667 | field = next_field; |
e98a2d6e PP |
2668 | } |
2669 | ||
2670 | end: | |
2671 | return field; | |
2672 | } | |
2673 | ||
2674 | static | |
50842bdc | 2675 | int64_t btr_get_sequence_length_cb(struct bt_field_type *type, void *data) |
e98a2d6e PP |
2676 | { |
2677 | int64_t ret = -1; | |
2678 | int iret; | |
50842bdc PP |
2679 | struct bt_field *seq_field; |
2680 | struct bt_field_path *field_path; | |
2681 | struct bt_notif_iter *notit = data; | |
2682 | struct bt_field *length_field = NULL; | |
e98a2d6e PP |
2683 | uint64_t length; |
2684 | ||
2ae62650 | 2685 | field_path = bt_field_type_sequence_borrow_length_field_path(type); |
1d2f35fd | 2686 | BT_ASSERT(field_path); |
2cf1d51e JG |
2687 | length_field = resolve_field(notit, field_path); |
2688 | if (!length_field) { | |
fdf0e7a0 PP |
2689 | BT_LOGW("Cannot resolve sequence field type's length field path: " |
2690 | "notit-addr=%p, ft-addr=%p", | |
2691 | notit, type); | |
e98a2d6e PP |
2692 | goto end; |
2693 | } | |
2694 | ||
d6b8c7f1 | 2695 | iret = bt_field_integer_unsigned_get_value(length_field, &length); |
e98a2d6e | 2696 | if (iret) { |
fdf0e7a0 PP |
2697 | BT_LOGE("Cannot get value of sequence length field: " |
2698 | "notit-addr=%p, field-addr=%p", | |
2699 | notit, length_field); | |
e98a2d6e PP |
2700 | goto end; |
2701 | } | |
2702 | ||
fdf0e7a0 | 2703 | seq_field = stack_top(notit->stack)->base; |
a7252d9c | 2704 | iret = bt_field_sequence_set_length(seq_field, length); |
2cf1d51e | 2705 | if (iret) { |
fdf0e7a0 PP |
2706 | BT_LOGE("Cannot set sequence field's length field: " |
2707 | "notit-addr=%p, seq-field-addr=%p, " | |
a7252d9c PP |
2708 | "length=%" PRIu64, |
2709 | notit, seq_field, length); | |
2cf1d51e JG |
2710 | goto end; |
2711 | } | |
fdf0e7a0 | 2712 | |
e98a2d6e PP |
2713 | ret = (int64_t) length; |
2714 | ||
2715 | end: | |
e98a2d6e PP |
2716 | return ret; |
2717 | } | |
2718 | ||
2719 | static | |
4a9a5d2d | 2720 | struct bt_field_type *btr_borrow_variant_field_type_cb( |
50842bdc | 2721 | struct bt_field_type *type, void *data) |
e98a2d6e | 2722 | { |
a7252d9c | 2723 | int ret; |
50842bdc PP |
2724 | struct bt_field_path *path; |
2725 | struct bt_notif_iter *notit = data; | |
2726 | struct bt_field *var_field; | |
2727 | struct bt_field *tag_field = NULL; | |
a7252d9c PP |
2728 | struct bt_field_type *tag_ft = NULL; |
2729 | struct bt_field_type *tag_int_ft = NULL; | |
50842bdc PP |
2730 | struct bt_field *selected_field = NULL; |
2731 | struct bt_field_type *selected_field_type = NULL; | |
e98a2d6e | 2732 | |
2ae62650 | 2733 | path = bt_field_type_variant_borrow_tag_field_path(type); |
1d2f35fd | 2734 | BT_ASSERT(path); |
e98a2d6e PP |
2735 | tag_field = resolve_field(notit, path); |
2736 | if (!tag_field) { | |
fdf0e7a0 PP |
2737 | BT_LOGW("Cannot resolve variant field type's tag field path: " |
2738 | "notit-addr=%p, ft-addr=%p", | |
2739 | notit, type); | |
e98a2d6e PP |
2740 | goto end; |
2741 | } | |
2742 | ||
2743 | /* | |
2744 | * We found the enumeration tag field instance which should be | |
2745 | * able to select a current field for this variant. This | |
2746 | * callback function we're in is called _after_ | |
2747 | * compound_begin(), so the current stack top's base field is | |
a7252d9c PP |
2748 | * the variant field in question. We set the variant field's tag |
2749 | * here and then get the current (selected) field thanks to this | |
2750 | * tag field's value. This current field will also provide us | |
2751 | * with its type. Then, this current field will remain the | |
2752 | * current selected one until the next callback function call | |
2753 | * which is used to fill it. | |
e98a2d6e | 2754 | */ |
fdf0e7a0 | 2755 | var_field = stack_top(notit->stack)->base; |
a7252d9c PP |
2756 | tag_ft = bt_field_borrow_type(tag_field); |
2757 | tag_int_ft = bt_field_type_enumeration_borrow_container_field_type( | |
2758 | tag_ft); | |
2759 | ||
2760 | if (bt_field_type_integer_is_signed(tag_int_ft)) { | |
2761 | int64_t tag_value; | |
2762 | ||
2763 | ret = bt_field_integer_signed_get_value(tag_field, &tag_value); | |
2764 | BT_ASSERT(ret == 0); | |
2765 | ret = bt_field_variant_set_tag_signed(var_field, tag_value); | |
2766 | BT_ASSERT(ret == 0); | |
2767 | } else { | |
2768 | uint64_t tag_value; | |
2769 | ||
2770 | ret = bt_field_integer_unsigned_get_value(tag_field, | |
2771 | &tag_value); | |
2772 | BT_ASSERT(ret == 0); | |
2773 | ret = bt_field_variant_set_tag_unsigned(var_field, tag_value); | |
2774 | BT_ASSERT(ret == 0); | |
2775 | } | |
2776 | ||
2777 | selected_field = bt_field_variant_borrow_current_field(var_field); | |
e98a2d6e | 2778 | if (!selected_field) { |
a7252d9c PP |
2779 | BT_LOGW("Cannot borrow variant field's current field: " |
2780 | "notit-addr=%p, var-field-addr=%p", | |
2781 | notit, var_field); | |
e98a2d6e PP |
2782 | goto end; |
2783 | } | |
2784 | ||
4a9a5d2d | 2785 | selected_field_type = bt_field_borrow_type(selected_field); |
e98a2d6e PP |
2786 | |
2787 | end: | |
e98a2d6e PP |
2788 | return selected_field_type; |
2789 | } | |
2790 | ||
1556a1af | 2791 | static |
a7252d9c | 2792 | int set_event_clocks(struct bt_notif_iter *notit) |
1556a1af JG |
2793 | { |
2794 | int ret; | |
2795 | GHashTableIter iter; | |
50842bdc | 2796 | struct bt_clock_class *clock_class; |
1556a1af JG |
2797 | uint64_t *clock_state; |
2798 | ||
2799 | g_hash_table_iter_init(&iter, notit->clock_states); | |
2800 | ||
ac0c6bdd | 2801 | while (g_hash_table_iter_next(&iter, (gpointer) &clock_class, |
a7252d9c | 2802 | (gpointer) &clock_state)) { |
fb8afeef PP |
2803 | ret = bt_event_set_clock_value(notit->event, clock_class, |
2804 | *clock_state, BT_TRUE); | |
2805 | if (ret) { | |
2806 | BT_LOGE("Cannot set event's default clock value: " | |
fdf0e7a0 PP |
2807 | "notit-addr=%p, clock-class-addr=%p, " |
2808 | "clock-class-name=\"%s\"", | |
2809 | notit, clock_class, | |
50842bdc | 2810 | bt_clock_class_get_name(clock_class)); |
1556a1af JG |
2811 | ret = -1; |
2812 | goto end; | |
2813 | } | |
af87daef PP |
2814 | } |
2815 | ||
a7252d9c | 2816 | ret = 0; |
fb8afeef | 2817 | |
af87daef | 2818 | end: |
af87daef PP |
2819 | return ret; |
2820 | } | |
2821 | ||
9412b331 PP |
2822 | static |
2823 | void notify_new_stream(struct bt_notif_iter *notit, | |
2824 | struct bt_notification **notification) | |
2825 | { | |
a7252d9c | 2826 | enum bt_notif_iter_status status; |
9412b331 | 2827 | struct bt_notification *ret = NULL; |
9412b331 | 2828 | |
a7252d9c PP |
2829 | status = set_current_stream(notit); |
2830 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
2831 | BT_PUT(ret); | |
9412b331 PP |
2832 | goto end; |
2833 | } | |
2834 | ||
2835 | BT_ASSERT(notit->stream); | |
8eda4bcb PP |
2836 | BT_ASSERT(notit->notif_iter); |
2837 | ret = bt_notification_stream_begin_create(notit->notif_iter, | |
2838 | notit->stream); | |
9412b331 PP |
2839 | if (!ret) { |
2840 | BT_LOGE("Cannot create stream beginning notification: " | |
2841 | "notit-addr=%p, stream-addr=%p", | |
2842 | notit, notit->stream); | |
2843 | return; | |
2844 | } | |
2845 | ||
2846 | end: | |
2847 | *notification = ret; | |
2848 | } | |
2849 | ||
2850 | static | |
2851 | void notify_end_of_stream(struct bt_notif_iter *notit, | |
2852 | struct bt_notification **notification) | |
2853 | { | |
2854 | struct bt_notification *ret; | |
2855 | ||
2856 | if (!notit->stream) { | |
2857 | BT_LOGE("Cannot create stream for stream notification: " | |
2858 | "notit-addr=%p", notit); | |
2859 | return; | |
2860 | } | |
2861 | ||
8eda4bcb PP |
2862 | BT_ASSERT(notit->notif_iter); |
2863 | ret = bt_notification_stream_end_create(notit->notif_iter, | |
2864 | notit->stream); | |
9412b331 PP |
2865 | if (!ret) { |
2866 | BT_LOGE("Cannot create stream beginning notification: " | |
2867 | "notit-addr=%p, stream-addr=%p", | |
2868 | notit, notit->stream); | |
2869 | return; | |
2870 | } | |
2871 | *notification = ret; | |
2872 | } | |
2873 | ||
78586d8a | 2874 | static |
50842bdc | 2875 | void notify_new_packet(struct bt_notif_iter *notit, |
78586d8a | 2876 | struct bt_notification **notification) |
e98a2d6e | 2877 | { |
a7252d9c PP |
2878 | int ret; |
2879 | enum bt_notif_iter_status status; | |
2880 | struct bt_notification *notif = NULL; | |
e98a2d6e | 2881 | |
a7252d9c PP |
2882 | status = set_current_packet(notit); |
2883 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
2884 | goto end; | |
e98a2d6e PP |
2885 | } |
2886 | ||
a7252d9c PP |
2887 | BT_ASSERT(notit->packet); |
2888 | ||
2889 | if (notit->packet_header_field) { | |
2890 | ret = bt_packet_move_header(notit->packet, | |
2891 | notit->packet_header_field); | |
2892 | if (ret) { | |
2893 | goto end; | |
2894 | } | |
2895 | ||
2896 | notit->packet_header_field = NULL; | |
2897 | ||
2898 | /* | |
2899 | * At this point notit->dscopes.trace_packet_header has | |
2900 | * the same value as the packet header field within | |
2901 | * notit->packet. | |
2902 | */ | |
2903 | BT_ASSERT(bt_packet_borrow_header(notit->packet) == | |
2904 | notit->dscopes.trace_packet_header); | |
2905 | } | |
2906 | ||
2907 | if (notit->packet_context_field) { | |
2908 | ret = bt_packet_move_context(notit->packet, | |
2909 | notit->packet_context_field); | |
2910 | if (ret) { | |
2911 | goto end; | |
2912 | } | |
2913 | ||
2914 | notit->packet_context_field = NULL; | |
2915 | ||
2916 | /* | |
2917 | * At this point notit->dscopes.trace_packet_header has | |
2918 | * the same value as the packet header field within | |
2919 | * notit->packet. | |
2920 | */ | |
2921 | BT_ASSERT(bt_packet_borrow_context(notit->packet) == | |
2922 | notit->dscopes.stream_packet_context); | |
2923 | } | |
2924 | ||
fb8afeef PP |
2925 | if (notit->cur_packet_begin_cv.clock_class) { |
2926 | ret = bt_packet_set_beginning_clock_value(notit->packet, | |
2927 | notit->cur_packet_begin_cv.clock_class, | |
2928 | notit->cur_packet_begin_cv.raw_value, BT_TRUE); | |
2929 | if (ret) { | |
2930 | BT_LOGE("Cannot set packet's default beginning clock value: " | |
2931 | "notit-addr=%p, packet-addr=%p", | |
2932 | notit, notit->packet); | |
2933 | goto end; | |
2934 | } | |
2935 | } | |
2936 | ||
2937 | if (notit->cur_packet_end_cv.clock_class) { | |
2938 | ret = bt_packet_set_end_clock_value(notit->packet, | |
2939 | notit->cur_packet_end_cv.clock_class, | |
2940 | notit->cur_packet_end_cv.raw_value, BT_TRUE); | |
2941 | if (ret) { | |
2942 | BT_LOGE("Cannot set packet's default end clock value: " | |
2943 | "notit-addr=%p, packet-addr=%p", | |
2944 | notit, notit->packet); | |
2945 | goto end; | |
2946 | } | |
2947 | } | |
2948 | ||
8eda4bcb PP |
2949 | BT_ASSERT(notit->notif_iter); |
2950 | notif = bt_notification_packet_begin_create(notit->notif_iter, | |
ecb2b2fe | 2951 | notit->packet); |
a7252d9c | 2952 | if (!notif) { |
fdf0e7a0 PP |
2953 | BT_LOGE("Cannot create packet beginning notification: " |
2954 | "notit-addr=%p, packet-addr=%p", | |
2955 | notit, notit->packet); | |
fb8afeef | 2956 | goto end; |
78586d8a | 2957 | } |
a7252d9c | 2958 | |
a7252d9c | 2959 | *notification = notif; |
fb8afeef PP |
2960 | |
2961 | end: | |
2962 | return; | |
e98a2d6e PP |
2963 | } |
2964 | ||
78586d8a | 2965 | static |
50842bdc | 2966 | void notify_end_of_packet(struct bt_notif_iter *notit, |
78586d8a | 2967 | struct bt_notification **notification) |
e98a2d6e | 2968 | { |
a7252d9c | 2969 | struct bt_notification *notif; |
e98a2d6e | 2970 | |
e98a2d6e | 2971 | if (!notit->packet) { |
78586d8a | 2972 | return; |
e98a2d6e PP |
2973 | } |
2974 | ||
8eda4bcb PP |
2975 | BT_ASSERT(notit->notif_iter); |
2976 | notif = bt_notification_packet_end_create(notit->notif_iter, | |
2977 | notit->packet); | |
a7252d9c | 2978 | if (!notif) { |
fdf0e7a0 PP |
2979 | BT_LOGE("Cannot create packet end notification: " |
2980 | "notit-addr=%p, packet-addr=%p", | |
2981 | notit, notit->packet); | |
78586d8a JG |
2982 | return; |
2983 | } | |
e98a2d6e | 2984 | |
a7252d9c PP |
2985 | BT_PUT(notit->packet); |
2986 | *notification = notif; | |
e98a2d6e PP |
2987 | } |
2988 | ||
5f870343 | 2989 | static |
50842bdc | 2990 | void init_trace_field_path_cache(struct bt_trace *trace, |
5f870343 JG |
2991 | struct trace_field_path_cache *trace_field_path_cache) |
2992 | { | |
2993 | int stream_id = -1; | |
2994 | int stream_instance_id = -1; | |
2995 | int i, count; | |
50842bdc | 2996 | struct bt_field_type *packet_header = NULL; |
5f870343 | 2997 | |
2ae62650 | 2998 | packet_header = bt_trace_borrow_packet_header_field_type(trace); |
5f870343 JG |
2999 | if (!packet_header) { |
3000 | goto end; | |
3001 | } | |
3002 | ||
50842bdc | 3003 | if (!bt_field_type_is_structure(packet_header)) { |
5f870343 JG |
3004 | goto end; |
3005 | } | |
3006 | ||
50842bdc | 3007 | count = bt_field_type_structure_get_field_count(packet_header); |
1d2f35fd | 3008 | BT_ASSERT(count >= 0); |
5f870343 JG |
3009 | |
3010 | for (i = 0; (i < count && (stream_id == -1 || stream_instance_id == -1)); i++) { | |
3011 | int ret; | |
3012 | const char *field_name; | |
3013 | ||
2ae62650 PP |
3014 | ret = bt_field_type_structure_borrow_field_by_index( |
3015 | packet_header, &field_name, NULL, i); | |
5f870343 | 3016 | if (ret) { |
fdf0e7a0 PP |
3017 | BT_LOGE("Cannot get structure field's field: " |
3018 | "field-addr=%p, index=%d", | |
3019 | packet_header, i); | |
5f870343 JG |
3020 | goto end; |
3021 | } | |
3022 | ||
3023 | if (stream_id == -1 && !strcmp(field_name, "stream_id")) { | |
3024 | stream_id = i; | |
3025 | } else if (stream_instance_id == -1 && | |
3026 | !strcmp(field_name, "stream_instance_id")) { | |
3027 | stream_instance_id = i; | |
3028 | } | |
3029 | } | |
fdf0e7a0 | 3030 | |
5f870343 JG |
3031 | end: |
3032 | trace_field_path_cache->stream_id = stream_id; | |
3033 | trace_field_path_cache->stream_instance_id = stream_instance_id; | |
5f870343 JG |
3034 | } |
3035 | ||
c44c3e70 | 3036 | BT_HIDDEN |
50842bdc | 3037 | struct bt_notif_iter *bt_notif_iter_create(struct bt_trace *trace, |
e98a2d6e | 3038 | size_t max_request_sz, |
50842bdc | 3039 | struct bt_notif_iter_medium_ops medops, void *data) |
e98a2d6e | 3040 | { |
50842bdc PP |
3041 | struct bt_notif_iter *notit = NULL; |
3042 | struct bt_btr_cbs cbs = { | |
e98a2d6e PP |
3043 | .types = { |
3044 | .signed_int = btr_signed_int_cb, | |
3045 | .unsigned_int = btr_unsigned_int_cb, | |
3046 | .floating_point = btr_floating_point_cb, | |
3047 | .string_begin = btr_string_begin_cb, | |
3048 | .string = btr_string_cb, | |
3049 | .string_end = btr_string_end_cb, | |
3050 | .compound_begin = btr_compound_begin_cb, | |
3051 | .compound_end = btr_compound_end_cb, | |
3052 | }, | |
3053 | .query = { | |
3054 | .get_sequence_length = btr_get_sequence_length_cb, | |
4a9a5d2d | 3055 | .borrow_variant_field_type = btr_borrow_variant_field_type_cb, |
e98a2d6e PP |
3056 | }, |
3057 | }; | |
3058 | ||
1d2f35fd PP |
3059 | BT_ASSERT(trace); |
3060 | BT_ASSERT(medops.request_bytes); | |
a7252d9c | 3061 | BT_ASSERT(medops.borrow_stream); |
fdf0e7a0 PP |
3062 | BT_LOGD("Creating CTF plugin notification iterator: " |
3063 | "trace-addr=%p, trace-name=\"%s\", max-request-size=%zu, " | |
3064 | "data=%p", | |
50842bdc PP |
3065 | trace, bt_trace_get_name(trace), max_request_sz, data); |
3066 | notit = g_new0(struct bt_notif_iter, 1); | |
e98a2d6e | 3067 | if (!notit) { |
fdf0e7a0 | 3068 | BT_LOGE_STR("Failed to allocate one CTF plugin notification iterator."); |
e98a2d6e PP |
3069 | goto end; |
3070 | } | |
c44c3e70 | 3071 | notit->clock_states = g_hash_table_new_full(g_direct_hash, |
2ae62650 | 3072 | g_direct_equal, NULL, g_free); |
c44c3e70 | 3073 | if (!notit->clock_states) { |
fdf0e7a0 | 3074 | BT_LOGE_STR("Failed to allocate a GHashTable."); |
c44c3e70 JG |
3075 | goto error; |
3076 | } | |
2ae62650 | 3077 | notit->meta.trace = trace; |
e98a2d6e PP |
3078 | notit->medium.medops = medops; |
3079 | notit->medium.max_request_sz = max_request_sz; | |
3080 | notit->medium.data = data; | |
e98a2d6e PP |
3081 | notit->stack = stack_new(notit); |
3082 | if (!notit->stack) { | |
fdf0e7a0 | 3083 | BT_LOGE_STR("Failed to create field stack."); |
c44c3e70 | 3084 | goto error; |
e98a2d6e PP |
3085 | } |
3086 | ||
50842bdc | 3087 | notit->btr = bt_btr_create(cbs, notit); |
e98a2d6e | 3088 | if (!notit->btr) { |
fdf0e7a0 | 3089 | BT_LOGE_STR("Failed to create binary type reader (BTR)."); |
c44c3e70 | 3090 | goto error; |
e98a2d6e PP |
3091 | } |
3092 | ||
50842bdc | 3093 | bt_notif_iter_reset(notit); |
5f870343 JG |
3094 | init_trace_field_path_cache(trace, ¬it->trace_field_path_cache); |
3095 | notit->sc_field_path_caches = g_hash_table_new_full(g_direct_hash, | |
2ae62650 | 3096 | g_direct_equal, NULL, g_free); |
5f870343 | 3097 | if (!notit->sc_field_path_caches) { |
fdf0e7a0 | 3098 | BT_LOGE_STR("Failed to allocate a GHashTable."); |
5f870343 JG |
3099 | goto error; |
3100 | } | |
3101 | ||
3102 | notit->field_overrides = g_hash_table_new_full(g_direct_hash, | |
2ae62650 | 3103 | g_direct_equal, NULL, g_free); |
5f870343 | 3104 | if (!notit->field_overrides) { |
fdf0e7a0 | 3105 | BT_LOGE_STR("Failed to allocate a GHashTable."); |
5f870343 JG |
3106 | goto error; |
3107 | } | |
3108 | ||
fdf0e7a0 PP |
3109 | BT_LOGD("Created CTF plugin notification iterator: " |
3110 | "trace-addr=%p, trace-name=\"%s\", max-request-size=%zu, " | |
3111 | "data=%p, notit-addr=%p", | |
50842bdc | 3112 | trace, bt_trace_get_name(trace), max_request_sz, data, |
fdf0e7a0 | 3113 | notit); |
9e0c8dbb | 3114 | notit->cur_packet_offset = 0; |
fdf0e7a0 | 3115 | |
e98a2d6e PP |
3116 | end: |
3117 | return notit; | |
fdf0e7a0 | 3118 | |
c44c3e70 | 3119 | error: |
50842bdc | 3120 | bt_notif_iter_destroy(notit); |
c44c3e70 JG |
3121 | notit = NULL; |
3122 | goto end; | |
e98a2d6e PP |
3123 | } |
3124 | ||
50842bdc | 3125 | void bt_notif_iter_destroy(struct bt_notif_iter *notit) |
e98a2d6e | 3126 | { |
e98a2d6e | 3127 | BT_PUT(notit->packet); |
af87daef | 3128 | BT_PUT(notit->stream); |
a7252d9c | 3129 | release_all_dscopes(notit); |
e98a2d6e | 3130 | |
fdf0e7a0 PP |
3131 | BT_LOGD("Destroying CTF plugin notification iterator: addr=%p", notit); |
3132 | ||
e98a2d6e | 3133 | if (notit->stack) { |
fdf0e7a0 | 3134 | BT_LOGD_STR("Destroying field stack."); |
e98a2d6e PP |
3135 | stack_destroy(notit->stack); |
3136 | } | |
3137 | ||
3138 | if (notit->btr) { | |
fdf0e7a0 | 3139 | BT_LOGD("Destroying BTR: btr-addr=%p", notit->btr); |
50842bdc | 3140 | bt_btr_destroy(notit->btr); |
e98a2d6e PP |
3141 | } |
3142 | ||
c44c3e70 JG |
3143 | if (notit->clock_states) { |
3144 | g_hash_table_destroy(notit->clock_states); | |
3145 | } | |
5f870343 JG |
3146 | |
3147 | if (notit->sc_field_path_caches) { | |
3148 | g_hash_table_destroy(notit->sc_field_path_caches); | |
3149 | } | |
3150 | ||
3151 | if (notit->field_overrides) { | |
3152 | g_hash_table_destroy(notit->field_overrides); | |
3153 | } | |
fdf0e7a0 | 3154 | |
e98a2d6e PP |
3155 | g_free(notit); |
3156 | } | |
3157 | ||
50842bdc PP |
3158 | enum bt_notif_iter_status bt_notif_iter_get_next_notification( |
3159 | struct bt_notif_iter *notit, | |
8eda4bcb | 3160 | struct bt_private_connection_private_notification_iterator *notif_iter, |
78586d8a | 3161 | struct bt_notification **notification) |
e98a2d6e | 3162 | { |
a7252d9c | 3163 | int ret; |
50842bdc | 3164 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e | 3165 | |
1d2f35fd PP |
3166 | BT_ASSERT(notit); |
3167 | BT_ASSERT(notification); | |
e98a2d6e | 3168 | |
ecb2b2fe PP |
3169 | if (notit->state == STATE_DONE) { |
3170 | status = BT_NOTIF_ITER_STATUS_EOF; | |
3171 | goto end; | |
3172 | } | |
3173 | ||
8eda4bcb | 3174 | notit->notif_iter = notif_iter; |
9412b331 | 3175 | |
fb8afeef | 3176 | BT_LOGV("Getting next notification: notit-addr=%p", notit); |
fdf0e7a0 | 3177 | |
e98a2d6e PP |
3178 | while (true) { |
3179 | status = handle_state(notit); | |
50842bdc PP |
3180 | if (status == BT_NOTIF_ITER_STATUS_AGAIN) { |
3181 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_AGAIN."); | |
7cdc2bab MD |
3182 | goto end; |
3183 | } | |
a7252d9c | 3184 | |
50842bdc PP |
3185 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
3186 | if (status == BT_NOTIF_ITER_STATUS_EOF) { | |
9412b331 PP |
3187 | enum state next_state = notit->state; |
3188 | ||
50842bdc | 3189 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_EOF."); |
9412b331 PP |
3190 | |
3191 | if (notit->packet) { | |
a7252d9c PP |
3192 | notify_end_of_packet(notit, |
3193 | notification); | |
9412b331 | 3194 | } else { |
a7252d9c PP |
3195 | notify_end_of_stream(notit, |
3196 | notification); | |
9412b331 PP |
3197 | next_state = STATE_DONE; |
3198 | } | |
3199 | ||
3200 | if (!*notification) { | |
3201 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
3202 | goto end; | |
3203 | } | |
3204 | ||
3205 | status = BT_NOTIF_ITER_STATUS_OK; | |
3206 | notit->state = next_state; | |
e98a2d6e | 3207 | } else { |
fdf0e7a0 PP |
3208 | BT_LOGW("Cannot handle state: " |
3209 | "notit-addr=%p, state=%s", | |
3210 | notit, state_string(notit->state)); | |
e98a2d6e | 3211 | } |
a7252d9c | 3212 | |
e98a2d6e PP |
3213 | goto end; |
3214 | } | |
3215 | ||
3216 | switch (notit->state) { | |
9412b331 PP |
3217 | case STATE_EMIT_NOTIF_NEW_STREAM: |
3218 | /* notify_new_stream() logs errors */ | |
3219 | notify_new_stream(notit, notification); | |
3220 | if (!*notification) { | |
3221 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
3222 | } | |
3223 | notit->stream_begin_emitted = true; | |
3224 | goto end; | |
e98a2d6e | 3225 | case STATE_EMIT_NOTIF_NEW_PACKET: |
fdf0e7a0 | 3226 | /* notify_new_packet() logs errors */ |
e98a2d6e PP |
3227 | notify_new_packet(notit, notification); |
3228 | if (!*notification) { | |
50842bdc | 3229 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e | 3230 | } |
a7252d9c | 3231 | |
e98a2d6e PP |
3232 | goto end; |
3233 | case STATE_EMIT_NOTIF_EVENT: | |
a7252d9c PP |
3234 | BT_ASSERT(notit->event_notif); |
3235 | ret = set_event_clocks(notit); | |
3236 | if (ret) { | |
50842bdc | 3237 | status = BT_NOTIF_ITER_STATUS_ERROR; |
a7252d9c | 3238 | goto end; |
e98a2d6e | 3239 | } |
a7252d9c | 3240 | |
0d6f8bf6 PP |
3241 | *notification = notit->event_notif; |
3242 | notit->event_notif = NULL; | |
e98a2d6e PP |
3243 | goto end; |
3244 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
5f870343 JG |
3245 | /* Update clock with timestamp_end field. */ |
3246 | if (notit->cur_timestamp_end) { | |
50842bdc | 3247 | enum bt_btr_status btr_status; |
5f870343 | 3248 | |
f45bfe88 PP |
3249 | btr_status = update_clock(notit, |
3250 | notit->cur_timestamp_end); | |
50842bdc | 3251 | if (btr_status != BT_BTR_STATUS_OK) { |
fdf0e7a0 PP |
3252 | BT_LOGW("Cannot update stream's clock value: " |
3253 | "notit-addr=%p", notit); | |
50842bdc | 3254 | status = BT_NOTIF_ITER_STATUS_ERROR; |
5f870343 JG |
3255 | goto end; |
3256 | } | |
3257 | } | |
3258 | ||
fdf0e7a0 | 3259 | /* notify_end_of_packet() logs errors */ |
e98a2d6e PP |
3260 | notify_end_of_packet(notit, notification); |
3261 | if (!*notification) { | |
50842bdc | 3262 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e | 3263 | } |
a7252d9c | 3264 | |
e98a2d6e PP |
3265 | goto end; |
3266 | default: | |
3267 | /* Non-emitting state: continue */ | |
3268 | break; | |
3269 | } | |
3270 | } | |
3271 | ||
3272 | end: | |
3273 | return status; | |
3274 | } | |
87187cbf PP |
3275 | |
3276 | BT_HIDDEN | |
a7252d9c | 3277 | enum bt_notif_iter_status bt_notif_iter_borrow_packet_header_context_fields( |
50842bdc PP |
3278 | struct bt_notif_iter *notit, |
3279 | struct bt_field **packet_header_field, | |
3280 | struct bt_field **packet_context_field) | |
87187cbf | 3281 | { |
9e0c8dbb | 3282 | int ret; |
50842bdc | 3283 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
87187cbf | 3284 | |
1d2f35fd | 3285 | BT_ASSERT(notit); |
87187cbf PP |
3286 | |
3287 | if (notit->state == STATE_EMIT_NOTIF_NEW_PACKET) { | |
3288 | /* We're already there */ | |
3289 | goto set_fields; | |
3290 | } | |
3291 | ||
3292 | while (true) { | |
3293 | status = handle_state(notit); | |
50842bdc PP |
3294 | if (status == BT_NOTIF_ITER_STATUS_AGAIN) { |
3295 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_AGAIN."); | |
87187cbf PP |
3296 | goto end; |
3297 | } | |
50842bdc PP |
3298 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
3299 | if (status == BT_NOTIF_ITER_STATUS_EOF) { | |
3300 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_EOF."); | |
87187cbf | 3301 | } else { |
fdf0e7a0 PP |
3302 | BT_LOGW("Cannot handle state: " |
3303 | "notit-addr=%p, state=%s", | |
3304 | notit, state_string(notit->state)); | |
87187cbf PP |
3305 | } |
3306 | goto end; | |
3307 | } | |
3308 | ||
3309 | switch (notit->state) { | |
3310 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
3311 | /* | |
3312 | * Packet header and context fields are | |
3313 | * potentially decoded (or they don't exist). | |
3314 | */ | |
3315 | goto set_fields; | |
3316 | case STATE_INIT: | |
9412b331 | 3317 | case STATE_EMIT_NOTIF_NEW_STREAM: |
87187cbf PP |
3318 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: |
3319 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
3320 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
3321 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
3322 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
3323 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
3324 | /* Non-emitting state: continue */ | |
3325 | break; | |
3326 | default: | |
3327 | /* | |
3328 | * We should never get past the | |
3329 | * STATE_EMIT_NOTIF_NEW_PACKET state. | |
3330 | */ | |
fdf0e7a0 PP |
3331 | BT_LOGF("Unexpected state: notit-addr=%p, state=%s", |
3332 | notit, state_string(notit->state)); | |
0fbb9a9f | 3333 | abort(); |
87187cbf PP |
3334 | } |
3335 | } | |
3336 | ||
3337 | set_fields: | |
a7252d9c PP |
3338 | ret = set_current_packet_content_sizes(notit); |
3339 | if (ret) { | |
3340 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
3341 | goto end; | |
3342 | } | |
3343 | ||
87187cbf | 3344 | if (packet_header_field) { |
a7252d9c | 3345 | *packet_header_field = notit->dscopes.trace_packet_header; |
87187cbf PP |
3346 | } |
3347 | ||
3348 | if (packet_context_field) { | |
a7252d9c | 3349 | *packet_context_field = notit->dscopes.stream_packet_context; |
87187cbf PP |
3350 | } |
3351 | ||
3352 | end: | |
3353 | return status; | |
3354 | } | |
6de92955 PP |
3355 | |
3356 | BT_HIDDEN | |
50842bdc | 3357 | void bt_notif_iter_set_medops_data(struct bt_notif_iter *notit, |
6de92955 PP |
3358 | void *medops_data) |
3359 | { | |
1d2f35fd | 3360 | BT_ASSERT(notit); |
6de92955 PP |
3361 | notit->medium.data = medops_data; |
3362 | } | |
9e0c8dbb JG |
3363 | |
3364 | BT_HIDDEN | |
50842bdc PP |
3365 | enum bt_notif_iter_status bt_notif_iter_seek( |
3366 | struct bt_notif_iter *notit, off_t offset) | |
9e0c8dbb | 3367 | { |
50842bdc PP |
3368 | enum bt_notif_iter_status ret = BT_NOTIF_ITER_STATUS_OK; |
3369 | enum bt_notif_iter_medium_status medium_status; | |
9e0c8dbb | 3370 | |
1d2f35fd | 3371 | BT_ASSERT(notit); |
9e0c8dbb JG |
3372 | if (offset < 0) { |
3373 | BT_LOGE("Cannot seek to negative offset: offset=%jd", offset); | |
50842bdc | 3374 | ret = BT_NOTIF_ITER_STATUS_INVAL; |
9e0c8dbb JG |
3375 | goto end; |
3376 | } | |
3377 | ||
3378 | if (!notit->medium.medops.seek) { | |
50842bdc | 3379 | ret = BT_NOTIF_ITER_STATUS_UNSUPPORTED; |
9e0c8dbb JG |
3380 | BT_LOGD("Aborting seek as the iterator's underlying media does not implement seek support."); |
3381 | goto end; | |
3382 | } | |
3383 | ||
3384 | medium_status = notit->medium.medops.seek( | |
50842bdc | 3385 | BT_NOTIF_ITER_SEEK_WHENCE_SET, offset, |
9e0c8dbb | 3386 | notit->medium.data); |
50842bdc PP |
3387 | if (medium_status != BT_NOTIF_ITER_MEDIUM_STATUS_OK) { |
3388 | if (medium_status == BT_NOTIF_ITER_MEDIUM_STATUS_EOF) { | |
3389 | ret = BT_NOTIF_ITER_STATUS_EOF; | |
9e0c8dbb | 3390 | } else { |
50842bdc | 3391 | ret = BT_NOTIF_ITER_STATUS_ERROR; |
9e0c8dbb JG |
3392 | goto end; |
3393 | } | |
3394 | } | |
3395 | ||
50842bdc | 3396 | bt_notif_iter_reset(notit); |
9e0c8dbb JG |
3397 | notit->cur_packet_offset = offset; |
3398 | end: | |
3399 | return ret; | |
3400 | } | |
3401 | ||
3402 | BT_HIDDEN | |
50842bdc PP |
3403 | off_t bt_notif_iter_get_current_packet_offset( |
3404 | struct bt_notif_iter *notit) | |
9e0c8dbb | 3405 | { |
1d2f35fd | 3406 | BT_ASSERT(notit); |
9e0c8dbb JG |
3407 | return notit->cur_packet_offset; |
3408 | } | |
3409 | ||
3410 | BT_HIDDEN | |
50842bdc PP |
3411 | off_t bt_notif_iter_get_current_packet_size( |
3412 | struct bt_notif_iter *notit) | |
9e0c8dbb | 3413 | { |
1d2f35fd | 3414 | BT_ASSERT(notit); |
9e0c8dbb JG |
3415 | return notit->cur_packet_size; |
3416 | } |