Commit | Line | Data |
---|---|---|
e98a2d6e PP |
1 | /* |
2 | * Babeltrace - CTF notification iterator | |
06a626b8 | 3 | * |
7b33a0e0 PP |
4 | * Copyright (c) 2015-2018 EfficiOS Inc. and Linux Foundation |
5 | * Copyright (c) 2015-2018 Philippe Proulx <pproulx@efficios.com> | |
e98a2d6e PP |
6 | * |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
20 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
23 | * SOFTWARE. | |
24 | */ | |
25 | ||
fdf0e7a0 PP |
26 | #define BT_LOG_TAG "PLUGIN-CTF-NOTIF-ITER" |
27 | #include "logging.h" | |
28 | ||
e98a2d6e PP |
29 | #include <stdint.h> |
30 | #include <inttypes.h> | |
31 | #include <stdio.h> | |
32 | #include <stddef.h> | |
33 | #include <stdbool.h> | |
8b45963b | 34 | #include <babeltrace/assert-internal.h> |
e98a2d6e | 35 | #include <string.h> |
e0831b38 | 36 | #include <babeltrace/babeltrace.h> |
8deee039 | 37 | #include <babeltrace/common-internal.h> |
e98a2d6e | 38 | #include <glib.h> |
0fbb9a9f | 39 | #include <stdlib.h> |
e98a2d6e | 40 | |
06a626b8 | 41 | #include "notif-iter.h" |
939190b3 | 42 | #include "../bfcr/bfcr.h" |
e98a2d6e | 43 | |
839d52a5 | 44 | struct bt_notif_iter; |
e98a2d6e PP |
45 | |
46 | /* A visit stack entry */ | |
47 | struct stack_entry { | |
48 | /* | |
49 | * Current base field, one of: | |
50 | * | |
51 | * * string | |
52 | * * structure | |
53 | * * array | |
54 | * * sequence | |
55 | * * variant | |
56 | * | |
a6918753 | 57 | * Field is borrowed. |
e98a2d6e | 58 | */ |
78cf9df6 | 59 | struct bt_field *base; |
e98a2d6e | 60 | |
7b33a0e0 | 61 | /* Index of next field to set */ |
e98a2d6e PP |
62 | size_t index; |
63 | }; | |
64 | ||
65 | /* Visit stack */ | |
66 | struct stack { | |
87bdbbb0 PP |
67 | /* Entries (struct stack_entry) */ |
68 | GArray *entries; | |
69 | ||
70 | /* Number of active entries */ | |
71 | size_t size; | |
e98a2d6e PP |
72 | }; |
73 | ||
74 | /* State */ | |
75 | enum state { | |
76 | STATE_INIT, | |
77 | STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN, | |
78 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
79 | STATE_AFTER_TRACE_PACKET_HEADER, | |
80 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN, | |
81 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
82 | STATE_AFTER_STREAM_PACKET_CONTEXT, | |
6ff151ad | 83 | STATE_EMIT_NOTIF_NEW_STREAM, |
e98a2d6e | 84 | STATE_EMIT_NOTIF_NEW_PACKET, |
7b33a0e0 PP |
85 | STATE_DSCOPE_EVENT_HEADER_BEGIN, |
86 | STATE_DSCOPE_EVENT_HEADER_CONTINUE, | |
87 | STATE_AFTER_EVENT_HEADER, | |
88 | STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN, | |
89 | STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE, | |
90 | STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN, | |
91 | STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE, | |
e98a2d6e PP |
92 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, |
93 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
94 | STATE_EMIT_NOTIF_EVENT, | |
95 | STATE_EMIT_NOTIF_END_OF_PACKET, | |
6ff151ad | 96 | STATE_DONE, |
e98a2d6e PP |
97 | STATE_SKIP_PACKET_PADDING, |
98 | }; | |
99 | ||
100 | /* CTF notification iterator */ | |
839d52a5 | 101 | struct bt_notif_iter { |
e98a2d6e PP |
102 | /* Visit stack */ |
103 | struct stack *stack; | |
104 | ||
03e18d5d | 105 | /* Current notification iterator to create notifications (weak) */ |
834e9996 | 106 | struct bt_self_notification_iterator *notif_iter; |
f7c3ac09 | 107 | |
e98a2d6e PP |
108 | /* |
109 | * Current dynamic scope field pointer. | |
110 | * | |
a6918753 PP |
111 | * This is set by read_dscope_begin_state() and contains the |
112 | * value of one of the pointers in `dscopes` below. | |
e98a2d6e | 113 | */ |
78cf9df6 | 114 | struct bt_field *cur_dscope_field; |
e98a2d6e | 115 | |
7b33a0e0 PP |
116 | /* |
117 | * True if we're done filling a string field from a text | |
118 | * array/sequence payload. | |
119 | */ | |
120 | bool done_filling_string; | |
121 | ||
122 | /* Trace and classes */ | |
e98a2d6e | 123 | struct { |
7b33a0e0 PP |
124 | struct ctf_trace_class *tc; |
125 | struct ctf_stream_class *sc; | |
126 | struct ctf_event_class *ec; | |
e98a2d6e PP |
127 | } meta; |
128 | ||
a6918753 | 129 | /* Current packet header field wrapper (NULL if not created yet) */ |
78cf9df6 | 130 | struct bt_packet_header_field *packet_header_field; |
a6918753 PP |
131 | |
132 | /* Current packet header field wrapper (NULL if not created yet) */ | |
78cf9df6 | 133 | struct bt_packet_context_field *packet_context_field; |
a6918753 PP |
134 | |
135 | /* Current event header field (NULL if not created yet) */ | |
78cf9df6 | 136 | struct bt_event_header_field *event_header_field; |
a6918753 | 137 | |
e98a2d6e | 138 | /* Current packet (NULL if not created yet) */ |
78cf9df6 | 139 | struct bt_packet *packet; |
e98a2d6e | 140 | |
5184a1d6 | 141 | /* Current stream (NULL if not set yet) */ |
78cf9df6 | 142 | struct bt_stream *stream; |
5184a1d6 | 143 | |
a6918753 | 144 | /* Current event (NULL if not created yet) */ |
78cf9df6 | 145 | struct bt_event *event; |
a6918753 PP |
146 | |
147 | /* Current event notification (NULL if not created yet) */ | |
7b53201c | 148 | struct bt_notification *event_notif; |
a6918753 | 149 | |
7b33a0e0 | 150 | /* Database of current dynamic scopes */ |
e98a2d6e | 151 | struct { |
78cf9df6 PP |
152 | struct bt_field *trace_packet_header; |
153 | struct bt_field *stream_packet_context; | |
154 | struct bt_field *event_header; | |
155 | struct bt_field *event_common_context; | |
156 | struct bt_field *event_spec_context; | |
157 | struct bt_field *event_payload; | |
e98a2d6e PP |
158 | } dscopes; |
159 | ||
160 | /* Current state */ | |
161 | enum state state; | |
162 | ||
2cf1d51e | 163 | /* Current medium buffer data */ |
e98a2d6e PP |
164 | struct { |
165 | /* Last address provided by medium */ | |
166 | const uint8_t *addr; | |
167 | ||
168 | /* Buffer size provided by medium (bytes) */ | |
169 | size_t sz; | |
170 | ||
171 | /* Offset within whole packet of addr (bits) */ | |
172 | size_t packet_offset; | |
173 | ||
174 | /* Current position from addr (bits) */ | |
175 | size_t at; | |
9b876b7b PP |
176 | |
177 | /* Position of the last event header from addr (bits) */ | |
178 | size_t last_eh_at; | |
e98a2d6e PP |
179 | } buf; |
180 | ||
181 | /* Binary type reader */ | |
939190b3 | 182 | struct bt_bfcr *bfcr; |
e98a2d6e | 183 | |
2cf1d51e | 184 | /* Current medium data */ |
e98a2d6e | 185 | struct { |
839d52a5 | 186 | struct bt_notif_iter_medium_ops medops; |
e98a2d6e PP |
187 | size_t max_request_sz; |
188 | void *data; | |
189 | } medium; | |
190 | ||
6ff151ad PP |
191 | /* Stream beginning was emitted */ |
192 | bool stream_begin_emitted; | |
193 | ||
e98a2d6e | 194 | /* Current packet size (bits) (-1 if unknown) */ |
7b33a0e0 | 195 | int64_t cur_exp_packet_total_size; |
e98a2d6e PP |
196 | |
197 | /* Current content size (bits) (-1 if unknown) */ | |
7b33a0e0 | 198 | int64_t cur_exp_packet_content_size; |
c44c3e70 | 199 | |
7b33a0e0 PP |
200 | /* Current stream class ID */ |
201 | int64_t cur_stream_class_id; | |
bb230c9b | 202 | |
7b33a0e0 PP |
203 | /* Current event class ID */ |
204 | int64_t cur_event_class_id; | |
5f870343 | 205 | |
7b33a0e0 PP |
206 | /* Current data stream ID */ |
207 | int64_t cur_data_stream_id; | |
5f870343 JG |
208 | |
209 | /* | |
7b33a0e0 PP |
210 | * Offset, in the underlying media, of the current packet's |
211 | * start (-1 if unknown). | |
5f870343 | 212 | */ |
7b33a0e0 PP |
213 | off_t cur_packet_offset; |
214 | ||
215 | /* Default clock's current value */ | |
216 | uint64_t default_clock_val; | |
5f870343 | 217 | |
7b33a0e0 PP |
218 | /* End of packet snapshots */ |
219 | struct { | |
220 | uint64_t discarded_events; | |
221 | uint64_t packets; | |
222 | uint64_t beginning_clock; | |
223 | uint64_t end_clock; | |
224 | } snapshots; | |
225 | ||
226 | /* Stored values (for sequence lengths, variant tags) */ | |
227 | GArray *stored_values; | |
e98a2d6e PP |
228 | }; |
229 | ||
fdf0e7a0 PP |
230 | static inline |
231 | const char *state_string(enum state state) | |
232 | { | |
233 | switch (state) { | |
234 | case STATE_INIT: | |
235 | return "STATE_INIT"; | |
236 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
237 | return "STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN"; | |
238 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
239 | return "STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE"; | |
240 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
241 | return "STATE_AFTER_TRACE_PACKET_HEADER"; | |
242 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
243 | return "STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN"; | |
244 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
245 | return "STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE"; | |
246 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
247 | return "STATE_AFTER_STREAM_PACKET_CONTEXT"; | |
248 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
249 | return "STATE_EMIT_NOTIF_NEW_PACKET"; | |
6ff151ad PP |
250 | case STATE_EMIT_NOTIF_NEW_STREAM: |
251 | return "STATE_EMIT_NOTIF_NEW_STREAM"; | |
7b33a0e0 PP |
252 | case STATE_DSCOPE_EVENT_HEADER_BEGIN: |
253 | return "STATE_DSCOPE_EVENT_HEADER_BEGIN"; | |
254 | case STATE_DSCOPE_EVENT_HEADER_CONTINUE: | |
255 | return "STATE_DSCOPE_EVENT_HEADER_CONTINUE"; | |
256 | case STATE_AFTER_EVENT_HEADER: | |
257 | return "STATE_AFTER_EVENT_HEADER"; | |
258 | case STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN: | |
259 | return "STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN"; | |
260 | case STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE: | |
261 | return "STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE"; | |
262 | case STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN: | |
263 | return "STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN"; | |
264 | case STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE: | |
265 | return "STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE"; | |
fdf0e7a0 PP |
266 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: |
267 | return "STATE_DSCOPE_EVENT_PAYLOAD_BEGIN"; | |
268 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
269 | return "STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE"; | |
270 | case STATE_EMIT_NOTIF_EVENT: | |
271 | return "STATE_EMIT_NOTIF_EVENT"; | |
272 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
273 | return "STATE_EMIT_NOTIF_END_OF_PACKET"; | |
6ff151ad PP |
274 | case STATE_DONE: |
275 | return "STATE_DONE"; | |
fdf0e7a0 PP |
276 | case STATE_SKIP_PACKET_PADDING: |
277 | return "STATE_SKIP_PACKET_PADDING"; | |
278 | default: | |
279 | return "(unknown)"; | |
280 | } | |
281 | } | |
282 | ||
2cf1d51e | 283 | static |
839d52a5 | 284 | int bt_notif_iter_switch_packet(struct bt_notif_iter *notit); |
2cf1d51e | 285 | |
e98a2d6e | 286 | static |
839d52a5 | 287 | struct stack *stack_new(struct bt_notif_iter *notit) |
e98a2d6e PP |
288 | { |
289 | struct stack *stack = NULL; | |
290 | ||
291 | stack = g_new0(struct stack, 1); | |
292 | if (!stack) { | |
fdf0e7a0 | 293 | BT_LOGE_STR("Failed to allocate one stack."); |
e98a2d6e PP |
294 | goto error; |
295 | } | |
296 | ||
87bdbbb0 | 297 | stack->entries = g_array_new(FALSE, TRUE, sizeof(struct stack_entry)); |
e98a2d6e | 298 | if (!stack->entries) { |
87bdbbb0 | 299 | BT_LOGE_STR("Failed to allocate a GArray."); |
e98a2d6e PP |
300 | goto error; |
301 | } | |
302 | ||
fdf0e7a0 | 303 | BT_LOGD("Created stack: notit-addr=%p, stack-addr=%p", notit, stack); |
7b33a0e0 | 304 | goto end; |
fdf0e7a0 | 305 | |
e98a2d6e PP |
306 | error: |
307 | g_free(stack); | |
7b33a0e0 PP |
308 | stack = NULL; |
309 | ||
310 | end: | |
311 | return stack; | |
e98a2d6e PP |
312 | } |
313 | ||
314 | static | |
315 | void stack_destroy(struct stack *stack) | |
316 | { | |
8b45963b | 317 | BT_ASSERT(stack); |
fdf0e7a0 | 318 | BT_LOGD("Destroying stack: addr=%p", stack); |
87bdbbb0 PP |
319 | |
320 | if (stack->entries) { | |
321 | g_array_free(stack->entries, TRUE); | |
322 | } | |
323 | ||
e98a2d6e PP |
324 | g_free(stack); |
325 | } | |
326 | ||
327 | static | |
78cf9df6 | 328 | void stack_push(struct stack *stack, struct bt_field *base) |
e98a2d6e | 329 | { |
e98a2d6e | 330 | struct stack_entry *entry; |
e98a2d6e | 331 | |
8b45963b PP |
332 | BT_ASSERT(stack); |
333 | BT_ASSERT(base); | |
fdf0e7a0 | 334 | BT_LOGV("Pushing base field on stack: stack-addr=%p, " |
87bdbbb0 PP |
335 | "stack-size-before=%zu, stack-size-after=%zu", |
336 | stack, stack->size, stack->size + 1); | |
337 | ||
338 | if (stack->entries->len == stack->size) { | |
339 | g_array_set_size(stack->entries, stack->size + 1); | |
e98a2d6e PP |
340 | } |
341 | ||
87bdbbb0 | 342 | entry = &g_array_index(stack->entries, struct stack_entry, stack->size); |
a6918753 | 343 | entry->base = base; |
87bdbbb0 PP |
344 | entry->index = 0; |
345 | stack->size++; | |
e98a2d6e PP |
346 | } |
347 | ||
348 | static inline | |
349 | unsigned int stack_size(struct stack *stack) | |
350 | { | |
8b45963b | 351 | BT_ASSERT(stack); |
87bdbbb0 | 352 | return stack->size; |
e98a2d6e PP |
353 | } |
354 | ||
355 | static | |
356 | void stack_pop(struct stack *stack) | |
357 | { | |
8b45963b PP |
358 | BT_ASSERT(stack); |
359 | BT_ASSERT(stack_size(stack)); | |
fdf0e7a0 | 360 | BT_LOGV("Popping from stack: " |
87bdbbb0 PP |
361 | "stack-addr=%p, stack-size-before=%zu, stack-size-after=%zu", |
362 | stack, stack->size, stack->size - 1); | |
363 | stack->size--; | |
e98a2d6e PP |
364 | } |
365 | ||
366 | static inline | |
367 | struct stack_entry *stack_top(struct stack *stack) | |
368 | { | |
8b45963b PP |
369 | BT_ASSERT(stack); |
370 | BT_ASSERT(stack_size(stack)); | |
87bdbbb0 PP |
371 | return &g_array_index(stack->entries, struct stack_entry, |
372 | stack->size - 1); | |
e98a2d6e PP |
373 | } |
374 | ||
375 | static inline | |
376 | bool stack_empty(struct stack *stack) | |
377 | { | |
378 | return stack_size(stack) == 0; | |
379 | } | |
380 | ||
381 | static | |
382 | void stack_clear(struct stack *stack) | |
383 | { | |
8b45963b | 384 | BT_ASSERT(stack); |
87bdbbb0 | 385 | stack->size = 0; |
e98a2d6e PP |
386 | } |
387 | ||
388 | static inline | |
839d52a5 PP |
389 | enum bt_notif_iter_status notif_iter_status_from_m_status( |
390 | enum bt_notif_iter_medium_status m_status) | |
e98a2d6e | 391 | { |
7b33a0e0 | 392 | /* They are the same */ |
dc77b521 | 393 | return (int) m_status; |
e98a2d6e PP |
394 | } |
395 | ||
396 | static inline | |
839d52a5 | 397 | size_t buf_size_bits(struct bt_notif_iter *notit) |
e98a2d6e | 398 | { |
fdf0e7a0 | 399 | return notit->buf.sz * 8; |
e98a2d6e PP |
400 | } |
401 | ||
402 | static inline | |
839d52a5 | 403 | size_t buf_available_bits(struct bt_notif_iter *notit) |
e98a2d6e PP |
404 | { |
405 | return buf_size_bits(notit) - notit->buf.at; | |
406 | } | |
407 | ||
408 | static inline | |
839d52a5 | 409 | size_t packet_at(struct bt_notif_iter *notit) |
e98a2d6e PP |
410 | { |
411 | return notit->buf.packet_offset + notit->buf.at; | |
412 | } | |
413 | ||
e98a2d6e | 414 | static inline |
839d52a5 | 415 | void buf_consume_bits(struct bt_notif_iter *notit, size_t incr) |
e98a2d6e | 416 | { |
fdf0e7a0 PP |
417 | BT_LOGV("Advancing cursor: notit-addr=%p, cur-before=%zu, cur-after=%zu", |
418 | notit, notit->buf.at, notit->buf.at + incr); | |
e98a2d6e PP |
419 | notit->buf.at += incr; |
420 | } | |
421 | ||
e98a2d6e | 422 | static |
839d52a5 PP |
423 | enum bt_notif_iter_status request_medium_bytes( |
424 | struct bt_notif_iter *notit) | |
e98a2d6e | 425 | { |
fdf0e7a0 PP |
426 | uint8_t *buffer_addr = NULL; |
427 | size_t buffer_sz = 0; | |
839d52a5 | 428 | enum bt_notif_iter_medium_status m_status; |
e98a2d6e | 429 | |
fdf0e7a0 PP |
430 | BT_LOGV("Calling user function (request bytes): notit-addr=%p, " |
431 | "request-size=%zu", notit, notit->medium.max_request_sz); | |
e98a2d6e PP |
432 | m_status = notit->medium.medops.request_bytes( |
433 | notit->medium.max_request_sz, &buffer_addr, | |
434 | &buffer_sz, notit->medium.data); | |
fdf0e7a0 | 435 | BT_LOGV("User function returned: status=%s, buf-addr=%p, buf-size=%zu", |
839d52a5 | 436 | bt_notif_iter_medium_status_string(m_status), |
fdf0e7a0 | 437 | buffer_addr, buffer_sz); |
839d52a5 | 438 | if (m_status == BT_NOTIF_ITER_MEDIUM_STATUS_OK) { |
8b45963b | 439 | BT_ASSERT(buffer_sz != 0); |
e98a2d6e PP |
440 | |
441 | /* New packet offset is old one + old size (in bits) */ | |
442 | notit->buf.packet_offset += buf_size_bits(notit); | |
443 | ||
444 | /* Restart at the beginning of the new medium buffer */ | |
445 | notit->buf.at = 0; | |
bb8744a7 | 446 | notit->buf.last_eh_at = SIZE_MAX; |
e98a2d6e PP |
447 | |
448 | /* New medium buffer size */ | |
449 | notit->buf.sz = buffer_sz; | |
450 | ||
451 | /* New medium buffer address */ | |
452 | notit->buf.addr = buffer_addr; | |
fdf0e7a0 PP |
453 | |
454 | BT_LOGV("User function returned new bytes: " | |
455 | "packet-offset=%zu, cur=%zu, size=%zu, addr=%p", | |
456 | notit->buf.packet_offset, notit->buf.at, | |
457 | notit->buf.sz, notit->buf.addr); | |
458 | BT_LOGV_MEM(buffer_addr, buffer_sz, "Returned bytes at %p:", | |
459 | buffer_addr); | |
839d52a5 | 460 | } else if (m_status == BT_NOTIF_ITER_MEDIUM_STATUS_EOF) { |
7116f6c0 PP |
461 | /* |
462 | * User returned end of stream: validate that we're not | |
463 | * in the middle of a packet header, packet context, or | |
464 | * event. | |
465 | */ | |
7b33a0e0 PP |
466 | if (notit->cur_exp_packet_total_size >= 0) { |
467 | if (packet_at(notit) == | |
468 | notit->cur_exp_packet_total_size) { | |
42ef5ec2 | 469 | goto end; |
7116f6c0 | 470 | } |
42ef5ec2 PP |
471 | } else { |
472 | if (packet_at(notit) == 0) { | |
473 | goto end; | |
7116f6c0 | 474 | } |
7116f6c0 | 475 | |
42ef5ec2 PP |
476 | if (notit->buf.last_eh_at != SIZE_MAX && |
477 | notit->buf.at == notit->buf.last_eh_at) { | |
478 | goto end; | |
7116f6c0 PP |
479 | } |
480 | } | |
481 | ||
7116f6c0 PP |
482 | /* All other states are invalid */ |
483 | BT_LOGW("User function returned %s, but notification iterator is in an unexpected state: " | |
42ef5ec2 PP |
484 | "state=%s, cur-packet-size=%" PRId64 ", cur=%zu, " |
485 | "packet-cur=%zu, last-eh-at=%zu", | |
839d52a5 | 486 | bt_notif_iter_medium_status_string(m_status), |
42ef5ec2 | 487 | state_string(notit->state), |
7b33a0e0 | 488 | notit->cur_exp_packet_total_size, |
42ef5ec2 PP |
489 | notit->buf.at, packet_at(notit), |
490 | notit->buf.last_eh_at); | |
839d52a5 | 491 | m_status = BT_NOTIF_ITER_MEDIUM_STATUS_ERROR; |
fdf0e7a0 PP |
492 | } else if (m_status < 0) { |
493 | BT_LOGW("User function failed: status=%s", | |
839d52a5 | 494 | bt_notif_iter_medium_status_string(m_status)); |
e98a2d6e PP |
495 | } |
496 | ||
42ef5ec2 | 497 | end: |
e98a2d6e PP |
498 | return notif_iter_status_from_m_status(m_status); |
499 | } | |
500 | ||
501 | static inline | |
839d52a5 PP |
502 | enum bt_notif_iter_status buf_ensure_available_bits( |
503 | struct bt_notif_iter *notit) | |
e98a2d6e | 504 | { |
839d52a5 | 505 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e | 506 | |
7b33a0e0 | 507 | if (unlikely(buf_available_bits(notit) == 0)) { |
e98a2d6e | 508 | /* |
839d52a5 | 509 | * This _cannot_ return BT_NOTIF_ITER_STATUS_OK |
e98a2d6e PP |
510 | * _and_ no bits. |
511 | */ | |
512 | status = request_medium_bytes(notit); | |
513 | } | |
514 | ||
515 | return status; | |
516 | } | |
517 | ||
518 | static | |
839d52a5 PP |
519 | enum bt_notif_iter_status read_dscope_begin_state( |
520 | struct bt_notif_iter *notit, | |
939190b3 | 521 | struct ctf_field_class *dscope_fc, |
e98a2d6e | 522 | enum state done_state, enum state continue_state, |
78cf9df6 | 523 | struct bt_field *dscope_field) |
e98a2d6e | 524 | { |
839d52a5 | 525 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
939190b3 | 526 | enum bt_bfcr_status bfcr_status; |
e98a2d6e PP |
527 | size_t consumed_bits; |
528 | ||
e98a2d6e | 529 | notit->cur_dscope_field = dscope_field; |
939190b3 PP |
530 | BT_LOGV("Starting BFCR: notit-addr=%p, bfcr-addr=%p, fc-addr=%p", |
531 | notit, notit->bfcr, dscope_fc); | |
532 | consumed_bits = bt_bfcr_start(notit->bfcr, dscope_fc, | |
e98a2d6e | 533 | notit->buf.addr, notit->buf.at, packet_at(notit), |
939190b3 PP |
534 | notit->buf.sz, &bfcr_status); |
535 | BT_LOGV("BFCR consumed bits: size=%zu", consumed_bits); | |
e98a2d6e | 536 | |
939190b3 PP |
537 | switch (bfcr_status) { |
538 | case BT_BFCR_STATUS_OK: | |
539 | /* Field class was read completely */ | |
fdf0e7a0 | 540 | BT_LOGV_STR("Field was completely decoded."); |
e98a2d6e PP |
541 | notit->state = done_state; |
542 | break; | |
939190b3 PP |
543 | case BT_BFCR_STATUS_EOF: |
544 | BT_LOGV_STR("BFCR needs more data to decode field completely."); | |
e98a2d6e PP |
545 | notit->state = continue_state; |
546 | break; | |
547 | default: | |
939190b3 PP |
548 | BT_LOGW("BFCR failed to start: notit-addr=%p, bfcr-addr=%p, " |
549 | "status=%s", notit, notit->bfcr, | |
550 | bt_bfcr_status_string(bfcr_status)); | |
839d52a5 | 551 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
552 | goto end; |
553 | } | |
554 | ||
555 | /* Consume bits now since we know we're not in an error state */ | |
556 | buf_consume_bits(notit, consumed_bits); | |
557 | ||
558 | end: | |
559 | return status; | |
560 | } | |
561 | ||
562 | static | |
839d52a5 PP |
563 | enum bt_notif_iter_status read_dscope_continue_state( |
564 | struct bt_notif_iter *notit, enum state done_state) | |
e98a2d6e | 565 | { |
839d52a5 | 566 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
939190b3 | 567 | enum bt_bfcr_status bfcr_status; |
e98a2d6e PP |
568 | size_t consumed_bits; |
569 | ||
939190b3 PP |
570 | BT_LOGV("Continuing BFCR: notit-addr=%p, bfcr-addr=%p", |
571 | notit, notit->bfcr); | |
42ef5ec2 | 572 | |
e98a2d6e | 573 | status = buf_ensure_available_bits(notit); |
839d52a5 | 574 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
fdf0e7a0 PP |
575 | if (status < 0) { |
576 | BT_LOGW("Cannot ensure that buffer has at least one byte: " | |
577 | "notif-addr=%p, status=%s", | |
839d52a5 | 578 | notit, bt_notif_iter_status_string(status)); |
fdf0e7a0 PP |
579 | } else { |
580 | BT_LOGV("Cannot ensure that buffer has at least one byte: " | |
581 | "notif-addr=%p, status=%s", | |
839d52a5 | 582 | notit, bt_notif_iter_status_string(status)); |
fdf0e7a0 PP |
583 | } |
584 | ||
e98a2d6e PP |
585 | goto end; |
586 | } | |
587 | ||
939190b3 PP |
588 | consumed_bits = bt_bfcr_continue(notit->bfcr, notit->buf.addr, |
589 | notit->buf.sz, &bfcr_status); | |
590 | BT_LOGV("BFCR consumed bits: size=%zu", consumed_bits); | |
e98a2d6e | 591 | |
939190b3 PP |
592 | switch (bfcr_status) { |
593 | case BT_BFCR_STATUS_OK: | |
78586d8a | 594 | /* Type was read completely. */ |
fdf0e7a0 | 595 | BT_LOGV_STR("Field was completely decoded."); |
e98a2d6e PP |
596 | notit->state = done_state; |
597 | break; | |
939190b3 | 598 | case BT_BFCR_STATUS_EOF: |
78586d8a | 599 | /* Stay in this continue state. */ |
939190b3 | 600 | BT_LOGV_STR("BFCR needs more data to decode field completely."); |
e98a2d6e PP |
601 | break; |
602 | default: | |
939190b3 PP |
603 | BT_LOGW("BFCR failed to continue: notit-addr=%p, bfcr-addr=%p, " |
604 | "status=%s", notit, notit->bfcr, | |
605 | bt_bfcr_status_string(bfcr_status)); | |
839d52a5 | 606 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
607 | goto end; |
608 | } | |
609 | ||
78586d8a | 610 | /* Consume bits now since we know we're not in an error state. */ |
e98a2d6e | 611 | buf_consume_bits(notit, consumed_bits); |
e98a2d6e PP |
612 | end: |
613 | return status; | |
614 | } | |
615 | ||
616 | static | |
a6918753 | 617 | void release_event_dscopes(struct bt_notif_iter *notit) |
e98a2d6e | 618 | { |
7b33a0e0 | 619 | notit->dscopes.event_header = NULL; |
a6918753 PP |
620 | |
621 | if (notit->event_header_field) { | |
78cf9df6 | 622 | bt_event_header_field_release(notit->event_header_field); |
a6918753 PP |
623 | notit->event_header_field = NULL; |
624 | } | |
625 | ||
7b33a0e0 PP |
626 | notit->dscopes.event_common_context = NULL; |
627 | notit->dscopes.event_spec_context = NULL; | |
a6918753 | 628 | notit->dscopes.event_payload = NULL; |
e98a2d6e PP |
629 | } |
630 | ||
631 | static | |
a6918753 | 632 | void release_all_dscopes(struct bt_notif_iter *notit) |
e98a2d6e | 633 | { |
a6918753 PP |
634 | notit->dscopes.trace_packet_header = NULL; |
635 | ||
636 | if (notit->packet_header_field) { | |
78cf9df6 | 637 | bt_packet_header_field_release(notit->packet_header_field); |
a6918753 PP |
638 | notit->packet_header_field = NULL; |
639 | } | |
640 | ||
641 | notit->dscopes.stream_packet_context = NULL; | |
642 | ||
643 | if (notit->packet_context_field) { | |
78cf9df6 | 644 | bt_packet_context_field_release(notit->packet_context_field); |
a6918753 PP |
645 | notit->packet_context_field = NULL; |
646 | } | |
647 | ||
648 | release_event_dscopes(notit); | |
e98a2d6e PP |
649 | } |
650 | ||
651 | static | |
839d52a5 PP |
652 | enum bt_notif_iter_status read_packet_header_begin_state( |
653 | struct bt_notif_iter *notit) | |
e98a2d6e | 654 | { |
939190b3 | 655 | struct ctf_field_class *packet_header_fc = NULL; |
839d52a5 | 656 | enum bt_notif_iter_status ret = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e | 657 | |
839d52a5 | 658 | if (bt_notif_iter_switch_packet(notit)) { |
fdf0e7a0 | 659 | BT_LOGW("Cannot switch packet: notit-addr=%p", notit); |
839d52a5 | 660 | ret = BT_NOTIF_ITER_STATUS_ERROR; |
2cf1d51e JG |
661 | goto end; |
662 | } | |
e98a2d6e | 663 | |
10b7a2e4 | 664 | /* Packet header class is common to the whole trace class. */ |
939190b3 PP |
665 | packet_header_fc = notit->meta.tc->packet_header_fc; |
666 | if (!packet_header_fc) { | |
835b2d10 | 667 | notit->state = STATE_AFTER_TRACE_PACKET_HEADER; |
e98a2d6e PP |
668 | goto end; |
669 | } | |
670 | ||
a6918753 | 671 | BT_ASSERT(!notit->packet_header_field); |
7b33a0e0 | 672 | |
939190b3 | 673 | if (packet_header_fc->in_ir) { |
7b33a0e0 | 674 | /* |
10b7a2e4 PP |
675 | * Create free packet header field from trace class. |
676 | * This field is going to be moved to the packet once we | |
7b33a0e0 PP |
677 | * create it. We cannot create the packet now because: |
678 | * | |
679 | * 1. A packet is created from a stream. | |
680 | * 2. A stream is created from a stream class. | |
681 | * 3. We need the packet header field's content to know | |
682 | * the ID of the stream class to select. | |
683 | */ | |
9e550e5f | 684 | notit->packet_header_field = |
78cf9df6 | 685 | bt_packet_header_field_create( |
9e550e5f | 686 | notit->meta.tc->ir_tc); |
7b33a0e0 | 687 | if (!notit->packet_header_field) { |
10b7a2e4 | 688 | BT_LOGE_STR("Cannot create packet header field wrapper from trace class."); |
7b33a0e0 PP |
689 | ret = BT_NOTIF_ITER_STATUS_ERROR; |
690 | goto end; | |
691 | } | |
692 | ||
693 | notit->dscopes.trace_packet_header = | |
78cf9df6 | 694 | bt_packet_header_field_borrow_field( |
9e550e5f | 695 | notit->packet_header_field); |
7b33a0e0 | 696 | BT_ASSERT(notit->dscopes.trace_packet_header); |
a6918753 PP |
697 | } |
698 | ||
7b33a0e0 PP |
699 | notit->cur_stream_class_id = -1; |
700 | notit->cur_event_class_id = -1; | |
701 | notit->cur_data_stream_id = -1; | |
fdf0e7a0 | 702 | BT_LOGV("Decoding packet header field:" |
10b7a2e4 PP |
703 | "notit-addr=%p, trace-class-addr=%p, fc-addr=%p", |
704 | notit, notit->meta.tc, packet_header_fc); | |
939190b3 | 705 | ret = read_dscope_begin_state(notit, packet_header_fc, |
fdf0e7a0 PP |
706 | STATE_AFTER_TRACE_PACKET_HEADER, |
707 | STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE, | |
a6918753 | 708 | notit->dscopes.trace_packet_header); |
fdf0e7a0 PP |
709 | if (ret < 0) { |
710 | BT_LOGW("Cannot decode packet header field: " | |
10b7a2e4 PP |
711 | "notit-addr=%p, trace-class-addr=%p, " |
712 | "fc-addr=%p", | |
713 | notit, notit->meta.tc, packet_header_fc); | |
fdf0e7a0 | 714 | } |
b8418c69 | 715 | |
e98a2d6e | 716 | end: |
2cf1d51e | 717 | return ret; |
e98a2d6e PP |
718 | } |
719 | ||
720 | static | |
839d52a5 PP |
721 | enum bt_notif_iter_status read_packet_header_continue_state( |
722 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
723 | { |
724 | return read_dscope_continue_state(notit, | |
7b33a0e0 | 725 | STATE_AFTER_TRACE_PACKET_HEADER); |
5f870343 JG |
726 | } |
727 | ||
e98a2d6e | 728 | static inline |
7b33a0e0 | 729 | enum bt_notif_iter_status set_current_stream_class(struct bt_notif_iter *notit) |
e98a2d6e | 730 | { |
839d52a5 | 731 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
7b33a0e0 PP |
732 | struct ctf_stream_class *new_stream_class = NULL; |
733 | ||
734 | if (notit->cur_stream_class_id == -1) { | |
fdf0e7a0 | 735 | /* |
7b33a0e0 PP |
736 | * No current stream class ID field, therefore only one |
737 | * stream class. | |
fdf0e7a0 | 738 | */ |
7b33a0e0 PP |
739 | if (notit->meta.tc->stream_classes->len != 1) { |
740 | BT_LOGW("Need exactly one stream class since there's " | |
741 | "no stream class ID field: " | |
10b7a2e4 | 742 | "notit-addr=%p", notit); |
7b33a0e0 PP |
743 | status = BT_NOTIF_ITER_STATUS_ERROR; |
744 | goto end; | |
745 | } | |
e98a2d6e | 746 | |
7b33a0e0 PP |
747 | new_stream_class = notit->meta.tc->stream_classes->pdata[0]; |
748 | notit->cur_stream_class_id = new_stream_class->id; | |
e98a2d6e PP |
749 | } |
750 | ||
7b33a0e0 PP |
751 | new_stream_class = ctf_trace_class_borrow_stream_class_by_id( |
752 | notit->meta.tc, notit->cur_stream_class_id); | |
c937c615 | 753 | if (!new_stream_class) { |
10b7a2e4 | 754 | BT_LOGW("No stream class with ID of stream class ID to use in trace class: " |
fdf0e7a0 | 755 | "notit-addr=%p, stream-class-id=%" PRIu64 ", " |
10b7a2e4 PP |
756 | "trace-class-addr=%p", |
757 | notit, notit->cur_stream_class_id, notit->meta.tc); | |
839d52a5 | 758 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
759 | goto end; |
760 | } | |
761 | ||
7b33a0e0 PP |
762 | if (notit->meta.sc) { |
763 | if (new_stream_class != notit->meta.sc) { | |
c937c615 PP |
764 | BT_LOGW("Two packets refer to two different stream classes within the same packet sequence: " |
765 | "notit-addr=%p, prev-stream-class-addr=%p, " | |
c937c615 PP |
766 | "prev-stream-class-id=%" PRId64 ", " |
767 | "next-stream-class-addr=%p, " | |
c937c615 | 768 | "next-stream-class-id=%" PRId64 ", " |
10b7a2e4 | 769 | "trace-addr=%p", |
7b33a0e0 PP |
770 | notit, notit->meta.sc, |
771 | notit->meta.sc->id, | |
c937c615 | 772 | new_stream_class, |
7b33a0e0 | 773 | new_stream_class->id, |
10b7a2e4 | 774 | notit->meta.tc); |
839d52a5 | 775 | status = BT_NOTIF_ITER_STATUS_ERROR; |
c937c615 PP |
776 | goto end; |
777 | } | |
778 | } else { | |
7b33a0e0 | 779 | notit->meta.sc = new_stream_class; |
c937c615 PP |
780 | } |
781 | ||
fdf0e7a0 PP |
782 | BT_LOGV("Set current stream class: " |
783 | "notit-addr=%p, stream-class-addr=%p, " | |
7b33a0e0 PP |
784 | "stream-class-id=%" PRId64, |
785 | notit, notit->meta.sc, notit->meta.sc->id); | |
b8418c69 | 786 | |
e98a2d6e | 787 | end: |
e98a2d6e PP |
788 | return status; |
789 | } | |
790 | ||
a6918753 PP |
791 | static inline |
792 | enum bt_notif_iter_status set_current_stream(struct bt_notif_iter *notit) | |
793 | { | |
794 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
78cf9df6 | 795 | struct bt_stream *stream = NULL; |
a6918753 PP |
796 | |
797 | BT_LOGV("Calling user function (get stream): notit-addr=%p, " | |
7b33a0e0 PP |
798 | "stream-class-addr=%p, stream-class-id=%" PRId64, |
799 | notit, notit->meta.sc, | |
800 | notit->meta.sc->id); | |
4b70020d | 801 | stream = notit->medium.medops.borrow_stream( |
7b33a0e0 | 802 | notit->meta.sc->ir_sc, notit->cur_data_stream_id, |
4b70020d | 803 | notit->medium.data); |
8c6884d9 | 804 | bt_stream_get_ref(stream); |
a6918753 PP |
805 | BT_LOGV("User function returned: stream-addr=%p", stream); |
806 | if (!stream) { | |
7b33a0e0 PP |
807 | BT_LOGW_STR("User function failed to return a stream object " |
808 | "for the given stream class."); | |
a6918753 PP |
809 | status = BT_NOTIF_ITER_STATUS_ERROR; |
810 | goto end; | |
811 | } | |
812 | ||
813 | if (notit->stream && stream != notit->stream) { | |
7b33a0e0 PP |
814 | BT_LOGW("User function returned a different stream than the " |
815 | "previous one for the same sequence of packets."); | |
a6918753 PP |
816 | status = BT_NOTIF_ITER_STATUS_ERROR; |
817 | goto end; | |
818 | } | |
819 | ||
8c6884d9 | 820 | BT_STREAM_MOVE_REF(notit->stream, stream); |
a6918753 PP |
821 | |
822 | end: | |
8c6884d9 | 823 | bt_stream_put_ref(stream); |
a6918753 PP |
824 | return status; |
825 | } | |
826 | ||
827 | static inline | |
828 | enum bt_notif_iter_status set_current_packet(struct bt_notif_iter *notit) | |
829 | { | |
830 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
78cf9df6 | 831 | struct bt_packet *packet = NULL; |
a6918753 PP |
832 | |
833 | BT_LOGV("Creating packet for packet notification: " | |
834 | "notit-addr=%p", notit); | |
835 | BT_LOGV("Creating packet from stream: " | |
836 | "notit-addr=%p, stream-addr=%p, " | |
837 | "stream-class-addr=%p, " | |
a6918753 | 838 | "stream-class-id=%" PRId64, |
7b33a0e0 PP |
839 | notit, notit->stream, notit->meta.sc, |
840 | notit->meta.sc->id); | |
a6918753 PP |
841 | |
842 | /* Create packet */ | |
843 | BT_ASSERT(notit->stream); | |
78cf9df6 | 844 | packet = bt_packet_create(notit->stream); |
a6918753 PP |
845 | if (!packet) { |
846 | BT_LOGE("Cannot create packet from stream: " | |
847 | "notit-addr=%p, stream-addr=%p, " | |
848 | "stream-class-addr=%p, " | |
a6918753 | 849 | "stream-class-id=%" PRId64, |
7b33a0e0 PP |
850 | notit, notit->stream, notit->meta.sc, |
851 | notit->meta.sc->id); | |
a6918753 PP |
852 | goto error; |
853 | } | |
854 | ||
855 | goto end; | |
856 | ||
857 | error: | |
8c6884d9 | 858 | BT_PACKET_PUT_REF_AND_RESET(packet); |
a6918753 PP |
859 | status = BT_NOTIF_ITER_STATUS_ERROR; |
860 | ||
861 | end: | |
8c6884d9 | 862 | BT_PACKET_MOVE_REF(notit->packet, packet); |
a6918753 PP |
863 | return status; |
864 | } | |
865 | ||
e98a2d6e | 866 | static |
839d52a5 PP |
867 | enum bt_notif_iter_status after_packet_header_state( |
868 | struct bt_notif_iter *notit) | |
e98a2d6e | 869 | { |
839d52a5 | 870 | enum bt_notif_iter_status status; |
e98a2d6e PP |
871 | |
872 | status = set_current_stream_class(notit); | |
a6918753 PP |
873 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
874 | goto end; | |
e98a2d6e PP |
875 | } |
876 | ||
a6918753 PP |
877 | notit->state = STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN; |
878 | ||
879 | end: | |
e98a2d6e PP |
880 | return status; |
881 | } | |
882 | ||
883 | static | |
839d52a5 PP |
884 | enum bt_notif_iter_status read_packet_context_begin_state( |
885 | struct bt_notif_iter *notit) | |
e98a2d6e | 886 | { |
839d52a5 | 887 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
939190b3 | 888 | struct ctf_field_class *packet_context_fc; |
e98a2d6e | 889 | |
7b33a0e0 | 890 | BT_ASSERT(notit->meta.sc); |
939190b3 PP |
891 | packet_context_fc = notit->meta.sc->packet_context_fc; |
892 | if (!packet_context_fc) { | |
893 | BT_LOGV("No packet packet context field class in stream class: continuing: " | |
fdf0e7a0 | 894 | "notit-addr=%p, stream-class-addr=%p, " |
7b33a0e0 PP |
895 | "stream-class-id=%" PRId64, |
896 | notit, notit->meta.sc, | |
897 | notit->meta.sc->id); | |
835b2d10 | 898 | notit->state = STATE_AFTER_STREAM_PACKET_CONTEXT; |
e98a2d6e PP |
899 | goto end; |
900 | } | |
901 | ||
a6918753 | 902 | BT_ASSERT(!notit->packet_context_field); |
7b33a0e0 | 903 | |
939190b3 | 904 | if (packet_context_fc->in_ir) { |
7b33a0e0 PP |
905 | /* |
906 | * Create free packet context field from stream class. | |
907 | * This field is going to be moved to the packet once we | |
908 | * create it. We cannot create the packet now because a | |
909 | * packet is created from a stream, and this API must be | |
910 | * able to return the packet header and context fields | |
911 | * without creating a stream | |
912 | * (bt_notif_iter_borrow_packet_header_context_fields()). | |
913 | */ | |
914 | notit->packet_context_field = | |
78cf9df6 | 915 | bt_packet_context_field_create( |
9e550e5f | 916 | notit->meta.sc->ir_sc); |
7b33a0e0 PP |
917 | if (!notit->packet_context_field) { |
918 | BT_LOGE_STR("Cannot create packet context field wrapper from stream class."); | |
919 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
920 | goto end; | |
921 | } | |
922 | ||
923 | notit->dscopes.stream_packet_context = | |
78cf9df6 | 924 | bt_packet_context_field_borrow_field( |
9e550e5f | 925 | notit->packet_context_field); |
7b33a0e0 | 926 | BT_ASSERT(notit->dscopes.stream_packet_context); |
a6918753 PP |
927 | } |
928 | ||
fdf0e7a0 PP |
929 | BT_LOGV("Decoding packet context field: " |
930 | "notit-addr=%p, stream-class-addr=%p, " | |
939190b3 | 931 | "stream-class-id=%" PRId64 ", fc-addr=%p", |
7b33a0e0 | 932 | notit, notit->meta.sc, |
939190b3 PP |
933 | notit->meta.sc->id, packet_context_fc); |
934 | status = read_dscope_begin_state(notit, packet_context_fc, | |
fdf0e7a0 PP |
935 | STATE_AFTER_STREAM_PACKET_CONTEXT, |
936 | STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE, | |
a6918753 | 937 | notit->dscopes.stream_packet_context); |
fdf0e7a0 PP |
938 | if (status < 0) { |
939 | BT_LOGW("Cannot decode packet context field: " | |
940 | "notit-addr=%p, stream-class-addr=%p, " | |
939190b3 | 941 | "stream-class-id=%" PRId64 ", fc-addr=%p", |
7b33a0e0 PP |
942 | notit, notit->meta.sc, |
943 | notit->meta.sc->id, | |
939190b3 | 944 | packet_context_fc); |
fdf0e7a0 | 945 | } |
e98a2d6e PP |
946 | |
947 | end: | |
e98a2d6e PP |
948 | return status; |
949 | } | |
950 | ||
951 | static | |
839d52a5 PP |
952 | enum bt_notif_iter_status read_packet_context_continue_state( |
953 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
954 | { |
955 | return read_dscope_continue_state(notit, | |
78586d8a | 956 | STATE_AFTER_STREAM_PACKET_CONTEXT); |
e98a2d6e PP |
957 | } |
958 | ||
78586d8a | 959 | static |
839d52a5 PP |
960 | enum bt_notif_iter_status set_current_packet_content_sizes( |
961 | struct bt_notif_iter *notit) | |
e98a2d6e | 962 | { |
839d52a5 | 963 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e | 964 | |
7b33a0e0 PP |
965 | if (notit->cur_exp_packet_total_size == -1) { |
966 | if (notit->cur_exp_packet_content_size != -1) { | |
967 | BT_LOGW("Content size is set, but packet size is not: " | |
fdf0e7a0 | 968 | "notit-addr=%p, packet-context-field-addr=%p, " |
7b33a0e0 | 969 | "packet-size=%" PRId64 ", content-size=%" PRId64, |
fdf0e7a0 | 970 | notit, notit->dscopes.stream_packet_context, |
7b33a0e0 PP |
971 | notit->cur_exp_packet_total_size, |
972 | notit->cur_exp_packet_content_size); | |
839d52a5 | 973 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
974 | goto end; |
975 | } | |
e98a2d6e | 976 | } else { |
7b33a0e0 PP |
977 | if (notit->cur_exp_packet_content_size == -1) { |
978 | notit->cur_exp_packet_content_size = | |
979 | notit->cur_exp_packet_total_size; | |
980 | } | |
e98a2d6e PP |
981 | } |
982 | ||
7b33a0e0 PP |
983 | if (notit->cur_exp_packet_content_size > |
984 | notit->cur_exp_packet_total_size) { | |
985 | BT_LOGW("Invalid packet or content size: " | |
986 | "content size is greater than packet size: " | |
fdf0e7a0 | 987 | "notit-addr=%p, packet-context-field-addr=%p, " |
7b33a0e0 | 988 | "packet-size=%" PRId64 ", content-size=%" PRId64, |
fdf0e7a0 | 989 | notit, notit->dscopes.stream_packet_context, |
7b33a0e0 PP |
990 | notit->cur_exp_packet_total_size, |
991 | notit->cur_exp_packet_content_size); | |
839d52a5 | 992 | status = BT_NOTIF_ITER_STATUS_ERROR; |
fdf0e7a0 PP |
993 | goto end; |
994 | } | |
995 | ||
fdf0e7a0 PP |
996 | BT_LOGV("Set current packet and content sizes: " |
997 | "notit-addr=%p, packet-size=%" PRIu64 ", content-size=%" PRIu64, | |
7b33a0e0 PP |
998 | notit, notit->cur_exp_packet_total_size, |
999 | notit->cur_exp_packet_content_size); | |
e98a2d6e | 1000 | end: |
e98a2d6e PP |
1001 | return status; |
1002 | } | |
1003 | ||
1004 | static | |
839d52a5 PP |
1005 | enum bt_notif_iter_status after_packet_context_state( |
1006 | struct bt_notif_iter *notit) | |
e98a2d6e | 1007 | { |
839d52a5 | 1008 | enum bt_notif_iter_status status; |
e98a2d6e PP |
1009 | |
1010 | status = set_current_packet_content_sizes(notit); | |
8fc063a2 PP |
1011 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
1012 | goto end; | |
1013 | } | |
1014 | ||
8fc063a2 PP |
1015 | if (notit->stream_begin_emitted) { |
1016 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
1017 | } else { | |
1018 | notit->state = STATE_EMIT_NOTIF_NEW_STREAM; | |
e98a2d6e PP |
1019 | } |
1020 | ||
8fc063a2 | 1021 | end: |
e98a2d6e PP |
1022 | return status; |
1023 | } | |
1024 | ||
1025 | static | |
839d52a5 PP |
1026 | enum bt_notif_iter_status read_event_header_begin_state( |
1027 | struct bt_notif_iter *notit) | |
e98a2d6e | 1028 | { |
839d52a5 | 1029 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
939190b3 | 1030 | struct ctf_field_class *event_header_fc = NULL; |
e98a2d6e | 1031 | |
9b876b7b PP |
1032 | /* Reset the position of the last event header */ |
1033 | notit->buf.last_eh_at = notit->buf.at; | |
7b33a0e0 | 1034 | notit->cur_event_class_id = -1; |
9b876b7b | 1035 | |
e98a2d6e | 1036 | /* Check if we have some content left */ |
7b33a0e0 PP |
1037 | if (notit->cur_exp_packet_content_size >= 0) { |
1038 | if (unlikely(packet_at(notit) == | |
1039 | notit->cur_exp_packet_content_size)) { | |
e98a2d6e | 1040 | /* No more events! */ |
fdf0e7a0 PP |
1041 | BT_LOGV("Reached end of packet: notit-addr=%p, " |
1042 | "cur=%zu", notit, packet_at(notit)); | |
e98a2d6e PP |
1043 | notit->state = STATE_EMIT_NOTIF_END_OF_PACKET; |
1044 | goto end; | |
7b33a0e0 PP |
1045 | } else if (unlikely(packet_at(notit) > |
1046 | notit->cur_exp_packet_content_size)) { | |
e98a2d6e | 1047 | /* That's not supposed to happen */ |
fdf0e7a0 | 1048 | BT_LOGV("Before decoding event header field: cursor is passed the packet's content: " |
41342c71 | 1049 | "notit-addr=%p, content-size=%" PRId64 ", " |
7b33a0e0 PP |
1050 | "cur=%zu", notit, |
1051 | notit->cur_exp_packet_content_size, | |
fdf0e7a0 | 1052 | packet_at(notit)); |
839d52a5 | 1053 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1054 | goto end; |
1055 | } | |
7b33a0e0 PP |
1056 | } else { |
1057 | /* | |
1058 | * "Infinite" content: we're done when the medium has | |
1059 | * nothing else for us. | |
1060 | */ | |
1061 | status = buf_ensure_available_bits(notit); | |
1062 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
1063 | /* | |
1064 | * If this function returns | |
1065 | * `BT_NOTIF_ITER_STATUS_EOF`: | |
1066 | * | |
1067 | * 1. bt_notif_iter_get_next_notification() | |
1068 | * emits a "packet end" notification. This | |
1069 | * resets the current packet. The state | |
1070 | * remains unchanged otherwise. | |
1071 | * 2. This function is called again. It returns | |
1072 | * `BT_NOTIF_ITER_STATUS_EOF` again. | |
1073 | * 3. bt_notif_iter_get_next_notification() | |
1074 | * emits a "stream end" notification because | |
1075 | * there's no current packet. It sets the | |
1076 | * current state to `STATE_DONE`. | |
1077 | */ | |
1078 | goto end; | |
1079 | } | |
e98a2d6e PP |
1080 | } |
1081 | ||
a6918753 | 1082 | release_event_dscopes(notit); |
7b33a0e0 | 1083 | BT_ASSERT(notit->meta.sc); |
939190b3 PP |
1084 | event_header_fc = notit->meta.sc->event_header_fc; |
1085 | if (!event_header_fc) { | |
7b33a0e0 | 1086 | notit->state = STATE_AFTER_EVENT_HEADER; |
e98a2d6e PP |
1087 | goto end; |
1088 | } | |
1089 | ||
939190b3 | 1090 | if (event_header_fc->in_ir) { |
7b33a0e0 | 1091 | BT_ASSERT(!notit->event_header_field); |
9e550e5f | 1092 | notit->event_header_field = |
78cf9df6 | 1093 | bt_event_header_field_create( |
9e550e5f | 1094 | notit->meta.sc->ir_sc); |
7b33a0e0 | 1095 | if (!notit->event_header_field) { |
10b7a2e4 | 1096 | BT_LOGE_STR("Cannot create event header field wrapper from trace class."); |
7b33a0e0 PP |
1097 | status = BT_NOTIF_ITER_STATUS_ERROR; |
1098 | goto end; | |
1099 | } | |
1100 | ||
1101 | notit->dscopes.event_header = | |
78cf9df6 | 1102 | bt_event_header_field_borrow_field( |
9e550e5f | 1103 | notit->event_header_field); |
7b33a0e0 | 1104 | BT_ASSERT(notit->dscopes.event_header); |
a6918753 PP |
1105 | } |
1106 | ||
fdf0e7a0 PP |
1107 | BT_LOGV("Decoding event header field: " |
1108 | "notit-addr=%p, stream-class-addr=%p, " | |
7b33a0e0 | 1109 | "stream-class-id=%" PRId64 ", " |
939190b3 | 1110 | "fc-addr=%p", |
7b33a0e0 PP |
1111 | notit, notit->meta.sc, |
1112 | notit->meta.sc->id, | |
939190b3 PP |
1113 | event_header_fc); |
1114 | status = read_dscope_begin_state(notit, event_header_fc, | |
7b33a0e0 PP |
1115 | STATE_AFTER_EVENT_HEADER, |
1116 | STATE_DSCOPE_EVENT_HEADER_CONTINUE, | |
1117 | notit->dscopes.event_header); | |
fdf0e7a0 PP |
1118 | if (status < 0) { |
1119 | BT_LOGW("Cannot decode event header field: " | |
1120 | "notit-addr=%p, stream-class-addr=%p, " | |
939190b3 | 1121 | "stream-class-id=%" PRId64 ", fc-addr=%p", |
7b33a0e0 PP |
1122 | notit, notit->meta.sc, |
1123 | notit->meta.sc->id, | |
939190b3 | 1124 | event_header_fc); |
fdf0e7a0 | 1125 | } |
e98a2d6e | 1126 | |
b8418c69 | 1127 | end: |
e98a2d6e PP |
1128 | return status; |
1129 | } | |
1130 | ||
1131 | static | |
839d52a5 PP |
1132 | enum bt_notif_iter_status read_event_header_continue_state( |
1133 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1134 | { |
1135 | return read_dscope_continue_state(notit, | |
7b33a0e0 | 1136 | STATE_AFTER_EVENT_HEADER); |
e98a2d6e PP |
1137 | } |
1138 | ||
1139 | static inline | |
839d52a5 | 1140 | enum bt_notif_iter_status set_current_event_class(struct bt_notif_iter *notit) |
e98a2d6e | 1141 | { |
839d52a5 | 1142 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e | 1143 | |
7b33a0e0 | 1144 | struct ctf_event_class *new_event_class = NULL; |
e98a2d6e | 1145 | |
7b33a0e0 | 1146 | if (notit->cur_event_class_id == -1) { |
e98a2d6e | 1147 | /* |
7b33a0e0 PP |
1148 | * No current event class ID field, therefore only one |
1149 | * event class. | |
e98a2d6e | 1150 | */ |
7b33a0e0 PP |
1151 | if (notit->meta.sc->event_classes->len != 1) { |
1152 | BT_LOGW("Need exactly one event class since there's " | |
1153 | "no event class ID field: " | |
10b7a2e4 | 1154 | "notit-addr=%p", notit); |
7b33a0e0 PP |
1155 | status = BT_NOTIF_ITER_STATUS_ERROR; |
1156 | goto end; | |
fdf0e7a0 | 1157 | } |
e98a2d6e | 1158 | |
7b33a0e0 PP |
1159 | new_event_class = notit->meta.sc->event_classes->pdata[0]; |
1160 | notit->cur_event_class_id = new_event_class->id; | |
e98a2d6e PP |
1161 | } |
1162 | ||
7b33a0e0 PP |
1163 | new_event_class = ctf_stream_class_borrow_event_class_by_id( |
1164 | notit->meta.sc, notit->cur_event_class_id); | |
1165 | if (!new_event_class) { | |
fdf0e7a0 | 1166 | BT_LOGW("No event class with ID of event class ID to use in stream class: " |
7b33a0e0 PP |
1167 | "notit-addr=%p, stream-class-id=%" PRIu64 ", " |
1168 | "event-class-id=%" PRIu64 ", " | |
10b7a2e4 | 1169 | "trace-class-addr=%p", |
7b33a0e0 | 1170 | notit, notit->meta.sc->id, notit->cur_event_class_id, |
10b7a2e4 | 1171 | notit->meta.tc); |
839d52a5 | 1172 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e PP |
1173 | goto end; |
1174 | } | |
1175 | ||
7b33a0e0 | 1176 | notit->meta.ec = new_event_class; |
fdf0e7a0 PP |
1177 | BT_LOGV("Set current event class: " |
1178 | "notit-addr=%p, event-class-addr=%p, " | |
7b33a0e0 PP |
1179 | "event-class-id=%" PRId64 ", " |
1180 | "event-class-name=\"%s\"", | |
1181 | notit, notit->meta.ec, notit->meta.ec->id, | |
1182 | notit->meta.ec->name->str); | |
fdf0e7a0 | 1183 | |
e98a2d6e | 1184 | end: |
e98a2d6e PP |
1185 | return status; |
1186 | } | |
1187 | ||
a6918753 PP |
1188 | static inline |
1189 | enum bt_notif_iter_status set_current_event_notification( | |
1190 | struct bt_notif_iter *notit) | |
1191 | { | |
1192 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; | |
7b53201c | 1193 | struct bt_notification *notif = NULL; |
a6918753 | 1194 | |
7b33a0e0 | 1195 | BT_ASSERT(notit->meta.ec); |
a6918753 PP |
1196 | BT_ASSERT(notit->packet); |
1197 | BT_LOGV("Creating event notification from event class and packet: " | |
1198 | "notit-addr=%p, ec-addr=%p, ec-name=\"%s\", packet-addr=%p", | |
7b33a0e0 PP |
1199 | notit, notit->meta.ec, |
1200 | notit->meta.ec->name->str, | |
a6918753 | 1201 | notit->packet); |
03e18d5d | 1202 | BT_ASSERT(notit->notif_iter); |
7b53201c | 1203 | notif = bt_notification_event_create(notit->notif_iter, |
7b33a0e0 | 1204 | notit->meta.ec->ir_ec, notit->packet); |
a6918753 PP |
1205 | if (!notif) { |
1206 | BT_LOGE("Cannot create event notification: " | |
1207 | "notit-addr=%p, ec-addr=%p, ec-name=\"%s\", " | |
1208 | "packet-addr=%p", | |
7b33a0e0 PP |
1209 | notit, notit->meta.ec, |
1210 | notit->meta.ec->name->str, | |
a6918753 PP |
1211 | notit->packet); |
1212 | goto error; | |
1213 | } | |
1214 | ||
1215 | goto end; | |
1216 | ||
1217 | error: | |
8c6884d9 | 1218 | BT_NOTIFICATION_PUT_REF_AND_RESET(notif); |
a6918753 PP |
1219 | status = BT_NOTIF_ITER_STATUS_ERROR; |
1220 | ||
1221 | end: | |
8c6884d9 | 1222 | BT_NOTIFICATION_MOVE_REF(notit->event_notif, notif); |
a6918753 PP |
1223 | return status; |
1224 | } | |
1225 | ||
e98a2d6e | 1226 | static |
839d52a5 PP |
1227 | enum bt_notif_iter_status after_event_header_state( |
1228 | struct bt_notif_iter *notit) | |
e98a2d6e | 1229 | { |
839d52a5 | 1230 | enum bt_notif_iter_status status; |
e98a2d6e | 1231 | |
e98a2d6e | 1232 | status = set_current_event_class(notit); |
839d52a5 | 1233 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
e98a2d6e PP |
1234 | goto end; |
1235 | } | |
1236 | ||
a6918753 PP |
1237 | status = set_current_event_notification(notit); |
1238 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
1239 | goto end; | |
1240 | } | |
1241 | ||
7b53201c | 1242 | notit->event = bt_notification_event_borrow_event( |
9e550e5f | 1243 | notit->event_notif); |
a6918753 PP |
1244 | BT_ASSERT(notit->event); |
1245 | ||
1246 | if (notit->event_header_field) { | |
1247 | int ret; | |
1248 | ||
1249 | BT_ASSERT(notit->event); | |
78cf9df6 | 1250 | ret = bt_event_move_header_field(notit->event, |
a6918753 | 1251 | notit->event_header_field); |
a6918753 PP |
1252 | if (ret) { |
1253 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
1254 | goto end; | |
1255 | } | |
1256 | ||
1257 | notit->event_header_field = NULL; | |
1258 | ||
1259 | /* | |
7b33a0e0 | 1260 | * At this point notit->dscopes.event_header has |
a6918753 PP |
1261 | * the same value as the event header field within |
1262 | * notit->event. | |
1263 | */ | |
78cf9df6 | 1264 | BT_ASSERT(bt_event_borrow_header_field( |
9e550e5f | 1265 | notit->event) == notit->dscopes.event_header); |
a6918753 PP |
1266 | } |
1267 | ||
7b33a0e0 | 1268 | notit->state = STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN; |
e98a2d6e PP |
1269 | |
1270 | end: | |
1271 | return status; | |
1272 | } | |
1273 | ||
1274 | static | |
7b33a0e0 | 1275 | enum bt_notif_iter_status read_event_common_context_begin_state( |
839d52a5 | 1276 | struct bt_notif_iter *notit) |
e98a2d6e | 1277 | { |
839d52a5 | 1278 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
939190b3 | 1279 | struct ctf_field_class *event_common_context_fc; |
e98a2d6e | 1280 | |
939190b3 PP |
1281 | event_common_context_fc = notit->meta.sc->event_common_context_fc; |
1282 | if (!event_common_context_fc) { | |
7b33a0e0 | 1283 | notit->state = STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN; |
e98a2d6e PP |
1284 | goto end; |
1285 | } | |
1286 | ||
939190b3 | 1287 | if (event_common_context_fc->in_ir) { |
7b33a0e0 PP |
1288 | BT_ASSERT(!notit->dscopes.event_common_context); |
1289 | notit->dscopes.event_common_context = | |
78cf9df6 | 1290 | bt_event_borrow_common_context_field( |
9e550e5f | 1291 | notit->event); |
7b33a0e0 PP |
1292 | BT_ASSERT(notit->dscopes.event_common_context); |
1293 | } | |
1294 | ||
1295 | BT_LOGV("Decoding event common context field: " | |
fdf0e7a0 | 1296 | "notit-addr=%p, stream-class-addr=%p, " |
7b33a0e0 | 1297 | "stream-class-id=%" PRId64 ", " |
939190b3 | 1298 | "fc-addr=%p", |
7b33a0e0 PP |
1299 | notit, notit->meta.sc, |
1300 | notit->meta.sc->id, | |
939190b3 PP |
1301 | event_common_context_fc); |
1302 | status = read_dscope_begin_state(notit, event_common_context_fc, | |
7b33a0e0 PP |
1303 | STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN, |
1304 | STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE, | |
1305 | notit->dscopes.event_common_context); | |
fdf0e7a0 | 1306 | if (status < 0) { |
7b33a0e0 | 1307 | BT_LOGW("Cannot decode event common context field: " |
fdf0e7a0 | 1308 | "notit-addr=%p, stream-class-addr=%p, " |
939190b3 | 1309 | "stream-class-id=%" PRId64 ", fc-addr=%p", |
7b33a0e0 PP |
1310 | notit, notit->meta.sc, |
1311 | notit->meta.sc->id, | |
939190b3 | 1312 | event_common_context_fc); |
fdf0e7a0 | 1313 | } |
e98a2d6e PP |
1314 | |
1315 | end: | |
e98a2d6e PP |
1316 | return status; |
1317 | } | |
1318 | ||
1319 | static | |
7b33a0e0 | 1320 | enum bt_notif_iter_status read_event_common_context_continue_state( |
839d52a5 | 1321 | struct bt_notif_iter *notit) |
e98a2d6e PP |
1322 | { |
1323 | return read_dscope_continue_state(notit, | |
7b33a0e0 | 1324 | STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN); |
e98a2d6e PP |
1325 | } |
1326 | ||
1327 | static | |
7b33a0e0 | 1328 | enum bt_notif_iter_status read_event_spec_context_begin_state( |
839d52a5 | 1329 | struct bt_notif_iter *notit) |
e98a2d6e | 1330 | { |
839d52a5 | 1331 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
939190b3 | 1332 | struct ctf_field_class *event_spec_context_fc; |
e98a2d6e | 1333 | |
939190b3 PP |
1334 | event_spec_context_fc = notit->meta.ec->spec_context_fc; |
1335 | if (!event_spec_context_fc) { | |
835b2d10 | 1336 | notit->state = STATE_DSCOPE_EVENT_PAYLOAD_BEGIN; |
e98a2d6e PP |
1337 | goto end; |
1338 | } | |
fdf0e7a0 | 1339 | |
939190b3 | 1340 | if (event_spec_context_fc->in_ir) { |
7b33a0e0 | 1341 | BT_ASSERT(!notit->dscopes.event_spec_context); |
9e550e5f | 1342 | notit->dscopes.event_spec_context = |
78cf9df6 | 1343 | bt_event_borrow_specific_context_field( |
9e550e5f | 1344 | notit->event); |
7b33a0e0 PP |
1345 | BT_ASSERT(notit->dscopes.event_spec_context); |
1346 | } | |
1347 | ||
1348 | BT_LOGV("Decoding event specific context field: " | |
fdf0e7a0 PP |
1349 | "notit-addr=%p, event-class-addr=%p, " |
1350 | "event-class-name=\"%s\", event-class-id=%" PRId64 ", " | |
939190b3 | 1351 | "fc-addr=%p", |
7b33a0e0 PP |
1352 | notit, notit->meta.ec, |
1353 | notit->meta.ec->name->str, | |
1354 | notit->meta.ec->id, | |
939190b3 PP |
1355 | event_spec_context_fc); |
1356 | status = read_dscope_begin_state(notit, event_spec_context_fc, | |
e98a2d6e | 1357 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN, |
7b33a0e0 PP |
1358 | STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE, |
1359 | notit->dscopes.event_spec_context); | |
fdf0e7a0 | 1360 | if (status < 0) { |
7b33a0e0 | 1361 | BT_LOGW("Cannot decode event specific context field: " |
fdf0e7a0 PP |
1362 | "notit-addr=%p, event-class-addr=%p, " |
1363 | "event-class-name=\"%s\", " | |
939190b3 | 1364 | "event-class-id=%" PRId64 ", fc-addr=%p", |
7b33a0e0 PP |
1365 | notit, notit->meta.ec, |
1366 | notit->meta.ec->name->str, | |
1367 | notit->meta.ec->id, | |
939190b3 | 1368 | event_spec_context_fc); |
fdf0e7a0 | 1369 | } |
e98a2d6e PP |
1370 | |
1371 | end: | |
e98a2d6e PP |
1372 | return status; |
1373 | } | |
1374 | ||
1375 | static | |
7b33a0e0 | 1376 | enum bt_notif_iter_status read_event_spec_context_continue_state( |
839d52a5 | 1377 | struct bt_notif_iter *notit) |
e98a2d6e PP |
1378 | { |
1379 | return read_dscope_continue_state(notit, | |
1380 | STATE_DSCOPE_EVENT_PAYLOAD_BEGIN); | |
1381 | } | |
1382 | ||
1383 | static | |
839d52a5 PP |
1384 | enum bt_notif_iter_status read_event_payload_begin_state( |
1385 | struct bt_notif_iter *notit) | |
e98a2d6e | 1386 | { |
839d52a5 | 1387 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
939190b3 | 1388 | struct ctf_field_class *event_payload_fc; |
e98a2d6e | 1389 | |
939190b3 PP |
1390 | event_payload_fc = notit->meta.ec->payload_fc; |
1391 | if (!event_payload_fc) { | |
835b2d10 | 1392 | notit->state = STATE_EMIT_NOTIF_EVENT; |
e98a2d6e PP |
1393 | goto end; |
1394 | } | |
1395 | ||
939190b3 | 1396 | if (event_payload_fc->in_ir) { |
7b33a0e0 | 1397 | BT_ASSERT(!notit->dscopes.event_payload); |
9e550e5f | 1398 | notit->dscopes.event_payload = |
78cf9df6 | 1399 | bt_event_borrow_payload_field( |
9e550e5f | 1400 | notit->event); |
7b33a0e0 PP |
1401 | BT_ASSERT(notit->dscopes.event_payload); |
1402 | } | |
1403 | ||
fdf0e7a0 PP |
1404 | BT_LOGV("Decoding event payload field: " |
1405 | "notit-addr=%p, event-class-addr=%p, " | |
1406 | "event-class-name=\"%s\", event-class-id=%" PRId64 ", " | |
939190b3 | 1407 | "fc-addr=%p", |
7b33a0e0 PP |
1408 | notit, notit->meta.ec, |
1409 | notit->meta.ec->name->str, | |
1410 | notit->meta.ec->id, | |
939190b3 PP |
1411 | event_payload_fc); |
1412 | status = read_dscope_begin_state(notit, event_payload_fc, | |
e98a2d6e PP |
1413 | STATE_EMIT_NOTIF_EVENT, |
1414 | STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE, | |
a6918753 | 1415 | notit->dscopes.event_payload); |
fdf0e7a0 PP |
1416 | if (status < 0) { |
1417 | BT_LOGW("Cannot decode event payload field: " | |
1418 | "notit-addr=%p, event-class-addr=%p, " | |
1419 | "event-class-name=\"%s\", " | |
939190b3 | 1420 | "event-class-id=%" PRId64 ", fc-addr=%p", |
7b33a0e0 PP |
1421 | notit, notit->meta.ec, |
1422 | notit->meta.ec->name->str, | |
1423 | notit->meta.ec->id, | |
939190b3 | 1424 | event_payload_fc); |
fdf0e7a0 | 1425 | } |
e98a2d6e PP |
1426 | |
1427 | end: | |
e98a2d6e PP |
1428 | return status; |
1429 | } | |
1430 | ||
1431 | static | |
839d52a5 PP |
1432 | enum bt_notif_iter_status read_event_payload_continue_state( |
1433 | struct bt_notif_iter *notit) | |
e98a2d6e PP |
1434 | { |
1435 | return read_dscope_continue_state(notit, STATE_EMIT_NOTIF_EVENT); | |
1436 | } | |
1437 | ||
1438 | static | |
839d52a5 PP |
1439 | enum bt_notif_iter_status skip_packet_padding_state( |
1440 | struct bt_notif_iter *notit) | |
e98a2d6e | 1441 | { |
839d52a5 | 1442 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e PP |
1443 | size_t bits_to_skip; |
1444 | ||
7b33a0e0 PP |
1445 | BT_ASSERT(notit->cur_exp_packet_total_size > 0); |
1446 | bits_to_skip = notit->cur_exp_packet_total_size - packet_at(notit); | |
e98a2d6e PP |
1447 | if (bits_to_skip == 0) { |
1448 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1449 | goto end; | |
1450 | } else { | |
1451 | size_t bits_to_consume; | |
fdf0e7a0 PP |
1452 | |
1453 | BT_LOGV("Trying to skip %zu bits of padding: notit-addr=%p, size=%zu", | |
1454 | bits_to_skip, notit, bits_to_skip); | |
e98a2d6e | 1455 | status = buf_ensure_available_bits(notit); |
839d52a5 | 1456 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
e98a2d6e PP |
1457 | goto end; |
1458 | } | |
1459 | ||
1460 | bits_to_consume = MIN(buf_available_bits(notit), bits_to_skip); | |
fdf0e7a0 PP |
1461 | BT_LOGV("Skipping %zu bits of padding: notit-addr=%p, size=%zu", |
1462 | bits_to_consume, notit, bits_to_consume); | |
e98a2d6e | 1463 | buf_consume_bits(notit, bits_to_consume); |
7b33a0e0 PP |
1464 | bits_to_skip = notit->cur_exp_packet_total_size - |
1465 | packet_at(notit); | |
e98a2d6e PP |
1466 | if (bits_to_skip == 0) { |
1467 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1468 | goto end; | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | end: | |
1473 | return status; | |
1474 | } | |
1475 | ||
1476 | static inline | |
839d52a5 | 1477 | enum bt_notif_iter_status handle_state(struct bt_notif_iter *notit) |
e98a2d6e | 1478 | { |
839d52a5 | 1479 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
fdf0e7a0 | 1480 | const enum state state = notit->state; |
e98a2d6e | 1481 | |
fdf0e7a0 PP |
1482 | BT_LOGV("Handling state: notit-addr=%p, state=%s", |
1483 | notit, state_string(state)); | |
e98a2d6e PP |
1484 | |
1485 | // TODO: optimalize! | |
fdf0e7a0 | 1486 | switch (state) { |
e98a2d6e PP |
1487 | case STATE_INIT: |
1488 | notit->state = STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN; | |
1489 | break; | |
1490 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: | |
1491 | status = read_packet_header_begin_state(notit); | |
1492 | break; | |
1493 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
1494 | status = read_packet_header_continue_state(notit); | |
1495 | break; | |
1496 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
1497 | status = after_packet_header_state(notit); | |
1498 | break; | |
1499 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
1500 | status = read_packet_context_begin_state(notit); | |
1501 | break; | |
1502 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
1503 | status = read_packet_context_continue_state(notit); | |
1504 | break; | |
1505 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
1506 | status = after_packet_context_state(notit); | |
1507 | break; | |
6ff151ad PP |
1508 | case STATE_EMIT_NOTIF_NEW_STREAM: |
1509 | notit->state = STATE_EMIT_NOTIF_NEW_PACKET; | |
1510 | break; | |
e98a2d6e | 1511 | case STATE_EMIT_NOTIF_NEW_PACKET: |
7b33a0e0 | 1512 | notit->state = STATE_DSCOPE_EVENT_HEADER_BEGIN; |
e98a2d6e | 1513 | break; |
7b33a0e0 | 1514 | case STATE_DSCOPE_EVENT_HEADER_BEGIN: |
e98a2d6e PP |
1515 | status = read_event_header_begin_state(notit); |
1516 | break; | |
7b33a0e0 | 1517 | case STATE_DSCOPE_EVENT_HEADER_CONTINUE: |
e98a2d6e PP |
1518 | status = read_event_header_continue_state(notit); |
1519 | break; | |
7b33a0e0 | 1520 | case STATE_AFTER_EVENT_HEADER: |
e98a2d6e PP |
1521 | status = after_event_header_state(notit); |
1522 | break; | |
7b33a0e0 PP |
1523 | case STATE_DSCOPE_EVENT_COMMON_CONTEXT_BEGIN: |
1524 | status = read_event_common_context_begin_state(notit); | |
e98a2d6e | 1525 | break; |
7b33a0e0 PP |
1526 | case STATE_DSCOPE_EVENT_COMMON_CONTEXT_CONTINUE: |
1527 | status = read_event_common_context_continue_state(notit); | |
e98a2d6e | 1528 | break; |
7b33a0e0 PP |
1529 | case STATE_DSCOPE_EVENT_SPEC_CONTEXT_BEGIN: |
1530 | status = read_event_spec_context_begin_state(notit); | |
e98a2d6e | 1531 | break; |
7b33a0e0 PP |
1532 | case STATE_DSCOPE_EVENT_SPEC_CONTEXT_CONTINUE: |
1533 | status = read_event_spec_context_continue_state(notit); | |
e98a2d6e PP |
1534 | break; |
1535 | case STATE_DSCOPE_EVENT_PAYLOAD_BEGIN: | |
1536 | status = read_event_payload_begin_state(notit); | |
1537 | break; | |
1538 | case STATE_DSCOPE_EVENT_PAYLOAD_CONTINUE: | |
1539 | status = read_event_payload_continue_state(notit); | |
1540 | break; | |
1541 | case STATE_EMIT_NOTIF_EVENT: | |
7b33a0e0 | 1542 | notit->state = STATE_DSCOPE_EVENT_HEADER_BEGIN; |
e98a2d6e PP |
1543 | break; |
1544 | case STATE_SKIP_PACKET_PADDING: | |
1545 | status = skip_packet_padding_state(notit); | |
1546 | break; | |
1547 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
1548 | notit->state = STATE_SKIP_PACKET_PADDING; | |
1549 | break; | |
fdf0e7a0 PP |
1550 | default: |
1551 | BT_LOGD("Unknown CTF plugin notification iterator state: " | |
1552 | "notit-addr=%p, state=%d", notit, notit->state); | |
1553 | abort(); | |
e98a2d6e PP |
1554 | } |
1555 | ||
fdf0e7a0 PP |
1556 | BT_LOGV("Handled state: notit-addr=%p, status=%s, " |
1557 | "prev-state=%s, cur-state=%s", | |
839d52a5 | 1558 | notit, bt_notif_iter_status_string(status), |
fdf0e7a0 | 1559 | state_string(state), state_string(notit->state)); |
e98a2d6e PP |
1560 | return status; |
1561 | } | |
1562 | ||
2cf1d51e JG |
1563 | /** |
1564 | * Resets the internal state of a CTF notification iterator. | |
2cf1d51e | 1565 | */ |
6ff151ad | 1566 | BT_HIDDEN |
839d52a5 | 1567 | void bt_notif_iter_reset(struct bt_notif_iter *notit) |
e98a2d6e | 1568 | { |
8b45963b | 1569 | BT_ASSERT(notit); |
fdf0e7a0 | 1570 | BT_LOGD("Resetting notification iterator: addr=%p", notit); |
e98a2d6e | 1571 | stack_clear(notit->stack); |
7b33a0e0 PP |
1572 | notit->meta.sc = NULL; |
1573 | notit->meta.ec = NULL; | |
8c6884d9 PP |
1574 | BT_PACKET_PUT_REF_AND_RESET(notit->packet); |
1575 | BT_STREAM_PUT_REF_AND_RESET(notit->stream); | |
1576 | BT_NOTIFICATION_PUT_REF_AND_RESET(notit->event_notif); | |
a6918753 PP |
1577 | release_all_dscopes(notit); |
1578 | notit->cur_dscope_field = NULL; | |
1579 | ||
1580 | if (notit->packet_header_field) { | |
78cf9df6 | 1581 | bt_packet_header_field_release(notit->packet_header_field); |
a6918753 PP |
1582 | notit->packet_header_field = NULL; |
1583 | } | |
1584 | ||
1585 | if (notit->packet_context_field) { | |
78cf9df6 | 1586 | bt_packet_context_field_release(notit->packet_context_field); |
a6918753 PP |
1587 | notit->packet_context_field = NULL; |
1588 | } | |
1589 | ||
1590 | if (notit->event_header_field) { | |
78cf9df6 | 1591 | bt_event_header_field_release(notit->event_header_field); |
a6918753 PP |
1592 | notit->event_header_field = NULL; |
1593 | } | |
1594 | ||
e98a2d6e PP |
1595 | notit->buf.addr = NULL; |
1596 | notit->buf.sz = 0; | |
1597 | notit->buf.at = 0; | |
bb8744a7 | 1598 | notit->buf.last_eh_at = SIZE_MAX; |
e98a2d6e PP |
1599 | notit->buf.packet_offset = 0; |
1600 | notit->state = STATE_INIT; | |
7b33a0e0 PP |
1601 | notit->cur_exp_packet_content_size = -1; |
1602 | notit->cur_exp_packet_total_size = -1; | |
bb230c9b | 1603 | notit->cur_packet_offset = -1; |
7b33a0e0 PP |
1604 | notit->cur_stream_class_id = -1; |
1605 | notit->cur_event_class_id = -1; | |
1606 | notit->cur_data_stream_id = -1; | |
6ff151ad | 1607 | notit->stream_begin_emitted = false; |
e98a2d6e PP |
1608 | } |
1609 | ||
2cf1d51e | 1610 | static |
839d52a5 | 1611 | int bt_notif_iter_switch_packet(struct bt_notif_iter *notit) |
2cf1d51e JG |
1612 | { |
1613 | int ret = 0; | |
1614 | ||
c937c615 PP |
1615 | /* |
1616 | * We don't put the stream class here because we need to make | |
1617 | * sure that all the packets processed by the same notification | |
1618 | * iterator refer to the same stream class (the first one). | |
1619 | */ | |
8b45963b | 1620 | BT_ASSERT(notit); |
a6918753 | 1621 | |
7b33a0e0 PP |
1622 | if (notit->cur_exp_packet_total_size != -1) { |
1623 | notit->cur_packet_offset += notit->cur_exp_packet_total_size; | |
bb230c9b | 1624 | } |
a6918753 | 1625 | |
bb230c9b JG |
1626 | BT_LOGV("Switching packet: notit-addr=%p, cur=%zu, " |
1627 | "packet-offset=%" PRId64, notit, notit->buf.at, | |
1628 | notit->cur_packet_offset); | |
2cf1d51e | 1629 | stack_clear(notit->stack); |
7b33a0e0 | 1630 | notit->meta.ec = NULL; |
8c6884d9 PP |
1631 | BT_PACKET_PUT_REF_AND_RESET(notit->packet); |
1632 | BT_NOTIFICATION_PUT_REF_AND_RESET(notit->event_notif); | |
a6918753 PP |
1633 | release_all_dscopes(notit); |
1634 | notit->cur_dscope_field = NULL; | |
2cf1d51e JG |
1635 | |
1636 | /* | |
1637 | * Adjust current buffer so that addr points to the beginning of the new | |
1638 | * packet. | |
1639 | */ | |
1640 | if (notit->buf.addr) { | |
1641 | size_t consumed_bytes = (size_t) (notit->buf.at / CHAR_BIT); | |
1642 | ||
1643 | /* Packets are assumed to start on a byte frontier. */ | |
1644 | if (notit->buf.at % CHAR_BIT) { | |
fdf0e7a0 PP |
1645 | BT_LOGW("Cannot switch packet: current position is not a multiple of 8: " |
1646 | "notit-addr=%p, cur=%zu", notit, notit->buf.at); | |
2cf1d51e JG |
1647 | ret = -1; |
1648 | goto end; | |
1649 | } | |
1650 | ||
1651 | notit->buf.addr += consumed_bytes; | |
1652 | notit->buf.sz -= consumed_bytes; | |
1653 | notit->buf.at = 0; | |
1654 | notit->buf.packet_offset = 0; | |
fdf0e7a0 PP |
1655 | BT_LOGV("Adjusted buffer: addr=%p, size=%zu", |
1656 | notit->buf.addr, notit->buf.sz); | |
2cf1d51e JG |
1657 | } |
1658 | ||
7b33a0e0 PP |
1659 | notit->cur_exp_packet_content_size = -1; |
1660 | notit->cur_exp_packet_total_size = -1; | |
1661 | notit->cur_stream_class_id = -1; | |
1662 | notit->cur_event_class_id = -1; | |
1663 | notit->cur_data_stream_id = -1; | |
1664 | notit->snapshots.discarded_events = UINT64_C(-1); | |
1665 | notit->snapshots.packets = UINT64_C(-1); | |
1666 | notit->snapshots.beginning_clock = UINT64_C(-1); | |
1667 | notit->snapshots.end_clock = UINT64_C(-1); | |
fdf0e7a0 | 1668 | |
2cf1d51e JG |
1669 | end: |
1670 | return ret; | |
1671 | } | |
1672 | ||
e98a2d6e | 1673 | static |
78cf9df6 | 1674 | struct bt_field *borrow_next_field(struct bt_notif_iter *notit) |
e98a2d6e | 1675 | { |
78cf9df6 PP |
1676 | struct bt_field *next_field = NULL; |
1677 | struct bt_field *base_field; | |
1678 | const struct bt_field_class *base_fc; | |
e98a2d6e PP |
1679 | size_t index; |
1680 | ||
8b45963b | 1681 | BT_ASSERT(!stack_empty(notit->stack)); |
e98a2d6e PP |
1682 | index = stack_top(notit->stack)->index; |
1683 | base_field = stack_top(notit->stack)->base; | |
8b45963b | 1684 | BT_ASSERT(base_field); |
78cf9df6 | 1685 | base_fc = bt_field_borrow_class_const(base_field); |
939190b3 | 1686 | BT_ASSERT(base_fc); |
e98a2d6e | 1687 | |
78cf9df6 | 1688 | switch (bt_field_class_get_type(base_fc)) { |
af0c18e3 | 1689 | case BT_FIELD_CLASS_TYPE_STRUCTURE: |
6ff151ad | 1690 | { |
7b33a0e0 | 1691 | BT_ASSERT(index < |
939190b3 | 1692 | bt_field_class_structure_get_member_count( |
78cf9df6 PP |
1693 | bt_field_borrow_class_const( |
1694 | base_field))); | |
9e550e5f | 1695 | next_field = |
78cf9df6 | 1696 | bt_field_structure_borrow_member_field_by_index( |
9e550e5f | 1697 | base_field, index); |
e98a2d6e | 1698 | break; |
6ff151ad | 1699 | } |
af0c18e3 PP |
1700 | case BT_FIELD_CLASS_TYPE_STATIC_ARRAY: |
1701 | case BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY: | |
78cf9df6 PP |
1702 | BT_ASSERT(index < bt_field_array_get_length(base_field)); |
1703 | next_field = bt_field_array_borrow_element_field_by_index( | |
7b33a0e0 | 1704 | base_field, index); |
e98a2d6e | 1705 | break; |
af0c18e3 | 1706 | case BT_FIELD_CLASS_TYPE_VARIANT: |
7b33a0e0 | 1707 | BT_ASSERT(index == 0); |
78cf9df6 | 1708 | next_field = bt_field_variant_borrow_selected_option_field( |
7b33a0e0 | 1709 | base_field); |
e98a2d6e PP |
1710 | break; |
1711 | default: | |
0fbb9a9f | 1712 | abort(); |
e98a2d6e PP |
1713 | } |
1714 | ||
7b33a0e0 | 1715 | BT_ASSERT(next_field); |
e98a2d6e PP |
1716 | return next_field; |
1717 | } | |
1718 | ||
c44c3e70 | 1719 | static |
7b33a0e0 PP |
1720 | void update_default_clock(struct bt_notif_iter *notit, uint64_t new_val, |
1721 | uint64_t new_val_size) | |
c44c3e70 | 1722 | { |
7b33a0e0 | 1723 | uint64_t new_val_mask; |
c44c3e70 | 1724 | uint64_t cur_value_masked; |
c44c3e70 | 1725 | |
7b33a0e0 | 1726 | BT_ASSERT(new_val_size > 0); |
c44c3e70 JG |
1727 | |
1728 | /* | |
1729 | * Special case for a 64-bit new value, which is the limit | |
1730 | * of a clock value as of this version: overwrite the | |
1731 | * current value directly. | |
1732 | */ | |
7b33a0e0 PP |
1733 | if (new_val_size == 64) { |
1734 | notit->default_clock_val = new_val; | |
c44c3e70 JG |
1735 | goto end; |
1736 | } | |
1737 | ||
7b33a0e0 PP |
1738 | new_val_mask = (1ULL << new_val_size) - 1; |
1739 | cur_value_masked = notit->default_clock_val & new_val_mask; | |
c44c3e70 | 1740 | |
7b33a0e0 | 1741 | if (new_val < cur_value_masked) { |
c44c3e70 JG |
1742 | /* |
1743 | * It looks like a wrap happened on the number of bits | |
1744 | * of the requested new value. Assume that the clock | |
1745 | * value wrapped only one time. | |
1746 | */ | |
7b33a0e0 | 1747 | notit->default_clock_val += new_val_mask + 1; |
c44c3e70 JG |
1748 | } |
1749 | ||
1750 | /* Clear the low bits of the current clock value. */ | |
7b33a0e0 | 1751 | notit->default_clock_val &= ~new_val_mask; |
c44c3e70 JG |
1752 | |
1753 | /* Set the low bits of the current clock value. */ | |
7b33a0e0 | 1754 | notit->default_clock_val |= new_val; |
b8418c69 | 1755 | |
c44c3e70 | 1756 | end: |
7b33a0e0 PP |
1757 | BT_LOGV("Updated default clock's value from integer field's value: " |
1758 | "value=%" PRIu64, notit->default_clock_val); | |
c44c3e70 JG |
1759 | } |
1760 | ||
1761 | static | |
939190b3 PP |
1762 | enum bt_bfcr_status bfcr_unsigned_int_cb(uint64_t value, |
1763 | struct ctf_field_class *fc, void *data) | |
c44c3e70 | 1764 | { |
7b33a0e0 | 1765 | struct bt_notif_iter *notit = data; |
939190b3 | 1766 | enum bt_bfcr_status status = BT_BFCR_STATUS_OK; |
78cf9df6 | 1767 | struct bt_field *field = NULL; |
939190b3 | 1768 | struct ctf_field_class_int *int_fc = (void *) fc; |
c44c3e70 | 1769 | |
939190b3 PP |
1770 | BT_LOGV("Unsigned integer function called from BFCR: " |
1771 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
1772 | "fc-type=%d, fc-in-ir=%d, value=%" PRIu64, |
1773 | notit, notit->bfcr, fc, fc->type, fc->in_ir, value); | |
a6918753 | 1774 | |
939190b3 | 1775 | if (likely(int_fc->meaning == CTF_FIELD_CLASS_MEANING_NONE)) { |
7b33a0e0 | 1776 | goto update_def_clock; |
c44c3e70 JG |
1777 | } |
1778 | ||
939190b3 PP |
1779 | switch (int_fc->meaning) { |
1780 | case CTF_FIELD_CLASS_MEANING_EVENT_CLASS_ID: | |
7b33a0e0 PP |
1781 | notit->cur_event_class_id = value; |
1782 | break; | |
939190b3 | 1783 | case CTF_FIELD_CLASS_MEANING_DATA_STREAM_ID: |
7b33a0e0 PP |
1784 | notit->cur_data_stream_id = value; |
1785 | break; | |
939190b3 | 1786 | case CTF_FIELD_CLASS_MEANING_PACKET_BEGINNING_TIME: |
7b33a0e0 PP |
1787 | notit->snapshots.beginning_clock = value; |
1788 | break; | |
939190b3 | 1789 | case CTF_FIELD_CLASS_MEANING_PACKET_END_TIME: |
7b33a0e0 PP |
1790 | notit->snapshots.end_clock = value; |
1791 | break; | |
939190b3 | 1792 | case CTF_FIELD_CLASS_MEANING_STREAM_CLASS_ID: |
7b33a0e0 PP |
1793 | notit->cur_stream_class_id = value; |
1794 | break; | |
939190b3 | 1795 | case CTF_FIELD_CLASS_MEANING_MAGIC: |
7b33a0e0 PP |
1796 | if (value != 0xc1fc1fc1) { |
1797 | BT_LOGW("Invalid CTF magic number: notit-addr=%p, " | |
1798 | "magic=%" PRIx64, notit, value); | |
939190b3 | 1799 | status = BT_BFCR_STATUS_ERROR; |
c44c3e70 JG |
1800 | goto end; |
1801 | } | |
fdf0e7a0 | 1802 | |
7b33a0e0 | 1803 | break; |
939190b3 | 1804 | case CTF_FIELD_CLASS_MEANING_PACKET_COUNTER_SNAPSHOT: |
7b33a0e0 PP |
1805 | notit->snapshots.packets = value; |
1806 | break; | |
939190b3 | 1807 | case CTF_FIELD_CLASS_MEANING_DISC_EV_REC_COUNTER_SNAPSHOT: |
7b33a0e0 PP |
1808 | notit->snapshots.discarded_events = value; |
1809 | break; | |
939190b3 | 1810 | case CTF_FIELD_CLASS_MEANING_EXP_PACKET_TOTAL_SIZE: |
7b33a0e0 PP |
1811 | notit->cur_exp_packet_total_size = value; |
1812 | break; | |
939190b3 | 1813 | case CTF_FIELD_CLASS_MEANING_EXP_PACKET_CONTENT_SIZE: |
7b33a0e0 PP |
1814 | notit->cur_exp_packet_content_size = value; |
1815 | break; | |
1816 | default: | |
1817 | abort(); | |
c44c3e70 JG |
1818 | } |
1819 | ||
7b33a0e0 | 1820 | update_def_clock: |
939190b3 PP |
1821 | if (unlikely(int_fc->mapped_clock_class)) { |
1822 | update_default_clock(notit, value, int_fc->base.size); | |
7b33a0e0 | 1823 | } |
c44c3e70 | 1824 | |
939190b3 | 1825 | if (unlikely(int_fc->storing_index >= 0)) { |
7b33a0e0 | 1826 | g_array_index(notit->stored_values, uint64_t, |
939190b3 | 1827 | (uint64_t) int_fc->storing_index) = value; |
7b33a0e0 | 1828 | } |
e98a2d6e | 1829 | |
939190b3 | 1830 | if (unlikely(!fc->in_ir)) { |
a6918753 | 1831 | goto end; |
e98a2d6e PP |
1832 | } |
1833 | ||
7b33a0e0 PP |
1834 | field = borrow_next_field(notit); |
1835 | BT_ASSERT(field); | |
78cf9df6 PP |
1836 | BT_ASSERT(bt_field_borrow_class_const(field) == fc->ir_fc); |
1837 | BT_ASSERT(bt_field_get_class_type(field) == | |
1838 | BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER || | |
1839 | bt_field_get_class_type(field) == | |
1840 | BT_FIELD_CLASS_TYPE_UNSIGNED_ENUMERATION); | |
1841 | bt_field_unsigned_integer_set_value(field, value); | |
e98a2d6e | 1842 | stack_top(notit->stack)->index++; |
fdf0e7a0 | 1843 | |
a6918753 | 1844 | end: |
e98a2d6e PP |
1845 | return status; |
1846 | } | |
1847 | ||
5f870343 | 1848 | static |
939190b3 PP |
1849 | enum bt_bfcr_status bfcr_unsigned_int_char_cb(uint64_t value, |
1850 | struct ctf_field_class *fc, void *data) | |
5f870343 | 1851 | { |
7b33a0e0 | 1852 | int ret; |
839d52a5 | 1853 | struct bt_notif_iter *notit = data; |
939190b3 | 1854 | enum bt_bfcr_status status = BT_BFCR_STATUS_OK; |
78cf9df6 | 1855 | struct bt_field *string_field = NULL; |
939190b3 | 1856 | struct ctf_field_class_int *int_fc = (void *) fc; |
7b33a0e0 | 1857 | char str[2] = {'\0', '\0'}; |
5f870343 | 1858 | |
939190b3 PP |
1859 | BT_LOGV("Unsigned integer character function called from BFCR: " |
1860 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
1861 | "fc-type=%d, fc-in-ir=%d, value=%" PRIu64, |
1862 | notit, notit->bfcr, fc, fc->type, fc->in_ir, value); | |
939190b3 PP |
1863 | BT_ASSERT(int_fc->meaning == CTF_FIELD_CLASS_MEANING_NONE); |
1864 | BT_ASSERT(!int_fc->mapped_clock_class); | |
1865 | BT_ASSERT(int_fc->storing_index < 0); | |
a6918753 | 1866 | |
939190b3 | 1867 | if (unlikely(!fc->in_ir)) { |
7b33a0e0 PP |
1868 | goto end; |
1869 | } | |
5f870343 | 1870 | |
7b33a0e0 | 1871 | if (notit->done_filling_string) { |
5f870343 JG |
1872 | goto end; |
1873 | } | |
1874 | ||
7b33a0e0 PP |
1875 | if (value == 0) { |
1876 | notit->done_filling_string = true; | |
5f870343 JG |
1877 | goto end; |
1878 | } | |
1879 | ||
7b33a0e0 | 1880 | string_field = stack_top(notit->stack)->base; |
78cf9df6 PP |
1881 | BT_ASSERT(bt_field_get_class_type(string_field) == |
1882 | BT_FIELD_CLASS_TYPE_STRING); | |
7b33a0e0 PP |
1883 | |
1884 | /* Append character */ | |
1885 | str[0] = (char) value; | |
78cf9df6 | 1886 | ret = bt_field_string_append_with_length(string_field, str, 1); |
7b33a0e0 PP |
1887 | if (ret) { |
1888 | BT_LOGE("Cannot append character to string field's value: " | |
1889 | "notit-addr=%p, field-addr=%p, ret=%d", | |
1890 | notit, string_field, ret); | |
939190b3 | 1891 | status = BT_BFCR_STATUS_ERROR; |
7b33a0e0 PP |
1892 | goto end; |
1893 | } | |
a6918753 | 1894 | |
5f870343 JG |
1895 | end: |
1896 | return status; | |
1897 | } | |
1898 | ||
1899 | static | |
939190b3 PP |
1900 | enum bt_bfcr_status bfcr_signed_int_cb(int64_t value, |
1901 | struct ctf_field_class *fc, void *data) | |
e98a2d6e | 1902 | { |
939190b3 | 1903 | enum bt_bfcr_status status = BT_BFCR_STATUS_OK; |
78cf9df6 | 1904 | struct bt_field *field = NULL; |
839d52a5 | 1905 | struct bt_notif_iter *notit = data; |
939190b3 | 1906 | struct ctf_field_class_int *int_fc = (void *) fc; |
e98a2d6e | 1907 | |
939190b3 PP |
1908 | BT_LOGV("Signed integer function called from BFCR: " |
1909 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
1910 | "fc-type=%d, fc-in-ir=%d, value=%" PRId64, |
1911 | notit, notit->bfcr, fc, fc->type, fc->in_ir, value); | |
939190b3 | 1912 | BT_ASSERT(int_fc->meaning == CTF_FIELD_CLASS_MEANING_NONE); |
7b33a0e0 | 1913 | |
939190b3 | 1914 | if (unlikely(int_fc->storing_index >= 0)) { |
7b33a0e0 | 1915 | g_array_index(notit->stored_values, uint64_t, |
939190b3 | 1916 | (uint64_t) int_fc->storing_index) = (uint64_t) value; |
7b33a0e0 PP |
1917 | } |
1918 | ||
939190b3 | 1919 | if (unlikely(!fc->in_ir)) { |
a6918753 | 1920 | goto end; |
e98a2d6e PP |
1921 | } |
1922 | ||
7b33a0e0 PP |
1923 | field = borrow_next_field(notit); |
1924 | BT_ASSERT(field); | |
78cf9df6 PP |
1925 | BT_ASSERT(bt_field_borrow_class_const(field) == fc->ir_fc); |
1926 | BT_ASSERT(bt_field_get_class_type(field) == | |
1927 | BT_FIELD_CLASS_TYPE_SIGNED_INTEGER || | |
1928 | bt_field_get_class_type(field) == | |
1929 | BT_FIELD_CLASS_TYPE_SIGNED_ENUMERATION); | |
1930 | bt_field_signed_integer_set_value(field, value); | |
e98a2d6e | 1931 | stack_top(notit->stack)->index++; |
fdf0e7a0 | 1932 | |
a6918753 | 1933 | end: |
e98a2d6e PP |
1934 | return status; |
1935 | } | |
1936 | ||
1937 | static | |
939190b3 PP |
1938 | enum bt_bfcr_status bfcr_floating_point_cb(double value, |
1939 | struct ctf_field_class *fc, void *data) | |
e98a2d6e | 1940 | { |
939190b3 | 1941 | enum bt_bfcr_status status = BT_BFCR_STATUS_OK; |
78cf9df6 | 1942 | struct bt_field *field = NULL; |
839d52a5 | 1943 | struct bt_notif_iter *notit = data; |
e98a2d6e | 1944 | |
939190b3 PP |
1945 | BT_LOGV("Floating point number function called from BFCR: " |
1946 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
1947 | "fc-type=%d, fc-in-ir=%d, value=%f", |
1948 | notit, notit->bfcr, fc, fc->type, fc->in_ir, value); | |
939190b3 | 1949 | BT_ASSERT(fc->in_ir); |
a6918753 | 1950 | field = borrow_next_field(notit); |
7b33a0e0 | 1951 | BT_ASSERT(field); |
78cf9df6 PP |
1952 | BT_ASSERT(bt_field_borrow_class_const(field) == fc->ir_fc); |
1953 | BT_ASSERT(bt_field_get_class_type(field) == | |
1954 | BT_FIELD_CLASS_TYPE_REAL); | |
1955 | bt_field_real_set_value(field, value); | |
e98a2d6e | 1956 | stack_top(notit->stack)->index++; |
e98a2d6e PP |
1957 | return status; |
1958 | } | |
1959 | ||
1960 | static | |
939190b3 PP |
1961 | enum bt_bfcr_status bfcr_string_begin_cb( |
1962 | struct ctf_field_class *fc, void *data) | |
e98a2d6e | 1963 | { |
78cf9df6 | 1964 | struct bt_field *field = NULL; |
839d52a5 | 1965 | struct bt_notif_iter *notit = data; |
e98a2d6e PP |
1966 | int ret; |
1967 | ||
939190b3 PP |
1968 | BT_LOGV("String (beginning) function called from BFCR: " |
1969 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
1970 | "fc-type=%d, fc-in-ir=%d", |
1971 | notit, notit->bfcr, fc, fc->type, fc->in_ir); | |
e98a2d6e | 1972 | |
939190b3 | 1973 | BT_ASSERT(fc->in_ir); |
7b33a0e0 PP |
1974 | field = borrow_next_field(notit); |
1975 | BT_ASSERT(field); | |
78cf9df6 PP |
1976 | BT_ASSERT(bt_field_borrow_class_const(field) == fc->ir_fc); |
1977 | BT_ASSERT(bt_field_get_class_type(field) == | |
1978 | BT_FIELD_CLASS_TYPE_STRING); | |
1979 | ret = bt_field_string_clear(field); | |
a6918753 PP |
1980 | BT_ASSERT(ret == 0); |
1981 | ||
e98a2d6e | 1982 | /* |
939190b3 PP |
1983 | * Push on stack. Not a compound class per se, but we know that |
1984 | * only bfcr_string_cb() may be called between this call and a | |
1985 | * subsequent call to bfcr_string_end_cb(). | |
e98a2d6e | 1986 | */ |
7b33a0e0 | 1987 | stack_push(notit->stack, field); |
939190b3 | 1988 | return BT_BFCR_STATUS_OK; |
e98a2d6e PP |
1989 | } |
1990 | ||
1991 | static | |
939190b3 PP |
1992 | enum bt_bfcr_status bfcr_string_cb(const char *value, |
1993 | size_t len, struct ctf_field_class *fc, void *data) | |
e98a2d6e | 1994 | { |
939190b3 | 1995 | enum bt_bfcr_status status = BT_BFCR_STATUS_OK; |
78cf9df6 | 1996 | struct bt_field *field = NULL; |
839d52a5 | 1997 | struct bt_notif_iter *notit = data; |
e98a2d6e PP |
1998 | int ret; |
1999 | ||
939190b3 PP |
2000 | BT_LOGV("String (substring) function called from BFCR: " |
2001 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
2002 | "fc-type=%d, fc-in-ir=%d, string-length=%zu", |
2003 | notit, notit->bfcr, fc, fc->type, fc->in_ir, | |
fdf0e7a0 | 2004 | len); |
939190b3 | 2005 | BT_ASSERT(fc->in_ir); |
e98a2d6e | 2006 | field = stack_top(notit->stack)->base; |
8b45963b | 2007 | BT_ASSERT(field); |
e98a2d6e | 2008 | |
a6918753 | 2009 | /* Append current substring */ |
78cf9df6 | 2010 | ret = bt_field_string_append_with_length(field, value, len); |
e98a2d6e | 2011 | if (ret) { |
fdf0e7a0 PP |
2012 | BT_LOGE("Cannot append substring to string field's value: " |
2013 | "notit-addr=%p, field-addr=%p, string-length=%zu, " | |
2014 | "ret=%d", notit, field, len, ret); | |
939190b3 | 2015 | status = BT_BFCR_STATUS_ERROR; |
e98a2d6e PP |
2016 | goto end; |
2017 | } | |
2018 | ||
2019 | end: | |
2020 | return status; | |
2021 | } | |
2022 | ||
2023 | static | |
939190b3 PP |
2024 | enum bt_bfcr_status bfcr_string_end_cb( |
2025 | struct ctf_field_class *fc, void *data) | |
e98a2d6e | 2026 | { |
839d52a5 | 2027 | struct bt_notif_iter *notit = data; |
e98a2d6e | 2028 | |
939190b3 PP |
2029 | BT_LOGV("String (end) function called from BFCR: " |
2030 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
2031 | "fc-type=%d, fc-in-ir=%d", |
2032 | notit, notit->bfcr, fc, fc->type, fc->in_ir); | |
939190b3 | 2033 | BT_ASSERT(fc->in_ir); |
fdf0e7a0 | 2034 | |
e98a2d6e PP |
2035 | /* Pop string field */ |
2036 | stack_pop(notit->stack); | |
2037 | ||
2038 | /* Go to next field */ | |
2039 | stack_top(notit->stack)->index++; | |
939190b3 | 2040 | return BT_BFCR_STATUS_OK; |
e98a2d6e PP |
2041 | } |
2042 | ||
939190b3 PP |
2043 | enum bt_bfcr_status bfcr_compound_begin_cb( |
2044 | struct ctf_field_class *fc, void *data) | |
e98a2d6e | 2045 | { |
839d52a5 | 2046 | struct bt_notif_iter *notit = data; |
78cf9df6 | 2047 | struct bt_field *field; |
e98a2d6e | 2048 | |
939190b3 PP |
2049 | BT_LOGV("Compound (beginning) function called from BFCR: " |
2050 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
2051 | "fc-type=%d, fc-in-ir=%d", |
2052 | notit, notit->bfcr, fc, fc->type, fc->in_ir); | |
7b33a0e0 | 2053 | |
939190b3 | 2054 | if (!fc->in_ir) { |
7b33a0e0 PP |
2055 | goto end; |
2056 | } | |
fdf0e7a0 | 2057 | |
a6918753 | 2058 | /* Borrow field */ |
e98a2d6e | 2059 | if (stack_empty(notit->stack)) { |
a6918753 PP |
2060 | /* Root: already set by read_dscope_begin_state() */ |
2061 | field = notit->cur_dscope_field; | |
e98a2d6e | 2062 | } else { |
a6918753 | 2063 | field = borrow_next_field(notit); |
7b33a0e0 | 2064 | BT_ASSERT(field); |
e98a2d6e PP |
2065 | } |
2066 | ||
2067 | /* Push field */ | |
8b45963b | 2068 | BT_ASSERT(field); |
78cf9df6 | 2069 | BT_ASSERT(bt_field_borrow_class_const(field) == fc->ir_fc); |
7b33a0e0 PP |
2070 | stack_push(notit->stack, field); |
2071 | ||
2072 | /* | |
939190b3 | 2073 | * Change BFCR "unsigned int" callback if it's a text |
7b33a0e0 PP |
2074 | * array/sequence. |
2075 | */ | |
af0c18e3 PP |
2076 | if (fc->type == CTF_FIELD_CLASS_TYPE_ARRAY || |
2077 | fc->type == CTF_FIELD_CLASS_TYPE_SEQUENCE) { | |
939190b3 | 2078 | struct ctf_field_class_array_base *array_fc = (void *) fc; |
7b33a0e0 | 2079 | |
939190b3 | 2080 | if (array_fc->is_text) { |
7b33a0e0 PP |
2081 | int ret; |
2082 | ||
78cf9df6 PP |
2083 | BT_ASSERT(bt_field_get_class_type(field) == |
2084 | BT_FIELD_CLASS_TYPE_STRING); | |
7b33a0e0 | 2085 | notit->done_filling_string = false; |
78cf9df6 | 2086 | ret = bt_field_string_clear(field); |
7b33a0e0 | 2087 | BT_ASSERT(ret == 0); |
939190b3 PP |
2088 | bt_bfcr_set_unsigned_int_cb(notit->bfcr, |
2089 | bfcr_unsigned_int_char_cb); | |
7b33a0e0 | 2090 | } |
e98a2d6e PP |
2091 | } |
2092 | ||
2093 | end: | |
939190b3 | 2094 | return BT_BFCR_STATUS_OK; |
e98a2d6e PP |
2095 | } |
2096 | ||
939190b3 PP |
2097 | enum bt_bfcr_status bfcr_compound_end_cb( |
2098 | struct ctf_field_class *fc, void *data) | |
e98a2d6e | 2099 | { |
839d52a5 | 2100 | struct bt_notif_iter *notit = data; |
e98a2d6e | 2101 | |
939190b3 PP |
2102 | BT_LOGV("Compound (end) function called from BFCR: " |
2103 | "notit-addr=%p, bfcr-addr=%p, fc-addr=%p, " | |
af0c18e3 PP |
2104 | "fc-type=%d, fc-in-ir=%d", |
2105 | notit, notit->bfcr, fc, fc->type, fc->in_ir); | |
e98a2d6e | 2106 | |
939190b3 | 2107 | if (!fc->in_ir) { |
e98a2d6e PP |
2108 | goto end; |
2109 | } | |
2110 | ||
7b33a0e0 | 2111 | BT_ASSERT(!stack_empty(notit->stack)); |
78cf9df6 | 2112 | BT_ASSERT(bt_field_borrow_class_const(stack_top(notit->stack)->base) == |
939190b3 | 2113 | fc->ir_fc); |
e98a2d6e | 2114 | |
7b33a0e0 | 2115 | /* |
939190b3 | 2116 | * Reset BFCR "unsigned int" callback if it's a text |
7b33a0e0 PP |
2117 | * array/sequence. |
2118 | */ | |
af0c18e3 PP |
2119 | if (fc->type == CTF_FIELD_CLASS_TYPE_ARRAY || |
2120 | fc->type == CTF_FIELD_CLASS_TYPE_SEQUENCE) { | |
939190b3 | 2121 | struct ctf_field_class_array_base *array_fc = (void *) fc; |
7b33a0e0 | 2122 | |
939190b3 | 2123 | if (array_fc->is_text) { |
af0c18e3 | 2124 | BT_ASSERT(bt_field_get_class_type( |
78cf9df6 | 2125 | stack_top(notit->stack)->base) == |
9e550e5f | 2126 | BT_FIELD_CLASS_TYPE_STRING); |
939190b3 PP |
2127 | bt_bfcr_set_unsigned_int_cb(notit->bfcr, |
2128 | bfcr_unsigned_int_cb); | |
e98a2d6e | 2129 | } |
7b33a0e0 | 2130 | } |
e98a2d6e | 2131 | |
7b33a0e0 PP |
2132 | /* Pop stack */ |
2133 | stack_pop(notit->stack); | |
e98a2d6e | 2134 | |
7b33a0e0 PP |
2135 | /* If the stack is not empty, increment the base's index */ |
2136 | if (!stack_empty(notit->stack)) { | |
2137 | stack_top(notit->stack)->index++; | |
e98a2d6e PP |
2138 | } |
2139 | ||
2140 | end: | |
939190b3 | 2141 | return BT_BFCR_STATUS_OK; |
e98a2d6e PP |
2142 | } |
2143 | ||
2144 | static | |
939190b3 | 2145 | int64_t bfcr_get_sequence_length_cb(struct ctf_field_class *fc, void *data) |
e98a2d6e | 2146 | { |
78cf9df6 | 2147 | struct bt_field *seq_field; |
839d52a5 | 2148 | struct bt_notif_iter *notit = data; |
939190b3 | 2149 | struct ctf_field_class_sequence *seq_fc = (void *) fc; |
7b33a0e0 PP |
2150 | int64_t length = -1; |
2151 | int ret; | |
e98a2d6e | 2152 | |
7b33a0e0 | 2153 | length = (uint64_t) g_array_index(notit->stored_values, uint64_t, |
939190b3 | 2154 | seq_fc->stored_length_index); |
fdf0e7a0 | 2155 | seq_field = stack_top(notit->stack)->base; |
7b33a0e0 | 2156 | BT_ASSERT(seq_field); |
78cf9df6 | 2157 | ret = bt_field_dynamic_array_set_length(seq_field, (uint64_t) length); |
7b33a0e0 PP |
2158 | if (ret) { |
2159 | BT_LOGE("Cannot set dynamic array field's length field: " | |
2160 | "notit-addr=%p, field-addr=%p, " | |
2161 | "length=%" PRIu64, notit, seq_field, length); | |
2cf1d51e | 2162 | } |
fdf0e7a0 | 2163 | |
7b33a0e0 | 2164 | return length; |
e98a2d6e PP |
2165 | } |
2166 | ||
2167 | static | |
939190b3 PP |
2168 | struct ctf_field_class *bfcr_borrow_variant_selected_field_class_cb( |
2169 | struct ctf_field_class *fc, void *data) | |
e98a2d6e | 2170 | { |
a6918753 | 2171 | int ret; |
7b33a0e0 PP |
2172 | uint64_t i; |
2173 | int64_t option_index = -1; | |
839d52a5 | 2174 | struct bt_notif_iter *notit = data; |
939190b3 PP |
2175 | struct ctf_field_class_variant *var_fc = (void *) fc; |
2176 | struct ctf_named_field_class *selected_option = NULL; | |
2177 | struct ctf_field_class *ret_fc = NULL; | |
7b33a0e0 PP |
2178 | union { |
2179 | uint64_t u; | |
2180 | int64_t i; | |
2181 | } tag; | |
2182 | ||
2183 | /* Get variant's tag */ | |
2184 | tag.u = g_array_index(notit->stored_values, uint64_t, | |
939190b3 | 2185 | var_fc->stored_tag_index); |
e98a2d6e PP |
2186 | |
2187 | /* | |
7b33a0e0 | 2188 | * Check each range to find the selected option's index. |
e98a2d6e | 2189 | */ |
939190b3 PP |
2190 | if (var_fc->tag_fc->base.is_signed) { |
2191 | for (i = 0; i < var_fc->ranges->len; i++) { | |
2192 | struct ctf_field_class_variant_range *range = | |
2193 | ctf_field_class_variant_borrow_range_by_index( | |
2194 | var_fc, i); | |
7b33a0e0 PP |
2195 | |
2196 | if (tag.i >= range->range.lower.i && | |
2197 | tag.i <= range->range.upper.i) { | |
2198 | option_index = (int64_t) range->option_index; | |
2199 | break; | |
2200 | } | |
2201 | } | |
a6918753 | 2202 | } else { |
939190b3 PP |
2203 | for (i = 0; i < var_fc->ranges->len; i++) { |
2204 | struct ctf_field_class_variant_range *range = | |
2205 | ctf_field_class_variant_borrow_range_by_index( | |
2206 | var_fc, i); | |
7b33a0e0 PP |
2207 | |
2208 | if (tag.u >= range->range.lower.u && | |
2209 | tag.u <= range->range.upper.u) { | |
2210 | option_index = (int64_t) range->option_index; | |
2211 | break; | |
2212 | } | |
2213 | } | |
a6918753 PP |
2214 | } |
2215 | ||
7b33a0e0 | 2216 | if (option_index < 0) { |
939190b3 PP |
2217 | BT_LOGW("Cannot find variant field class's option: " |
2218 | "notit-addr=%p, var-fc-addr=%p, u-tag=%" PRIu64 ", " | |
2219 | "i-tag=%" PRId64, notit, var_fc, tag.u, tag.i); | |
e98a2d6e PP |
2220 | goto end; |
2221 | } | |
2222 | ||
939190b3 PP |
2223 | selected_option = ctf_field_class_variant_borrow_option_by_index( |
2224 | var_fc, (uint64_t) option_index); | |
e98a2d6e | 2225 | |
939190b3 | 2226 | if (selected_option->fc->in_ir) { |
78cf9df6 | 2227 | struct bt_field *var_field = stack_top(notit->stack)->base; |
1556a1af | 2228 | |
78cf9df6 | 2229 | ret = bt_field_variant_select_option_field( |
9e550e5f | 2230 | var_field, option_index); |
8fc063a2 | 2231 | if (ret) { |
7b33a0e0 PP |
2232 | BT_LOGW("Cannot select variant field's option field: " |
2233 | "notit-addr=%p, var-field-addr=%p, " | |
2234 | "opt-index=%" PRId64, notit, var_field, | |
2235 | option_index); | |
1556a1af JG |
2236 | goto end; |
2237 | } | |
5184a1d6 PP |
2238 | } |
2239 | ||
939190b3 | 2240 | ret_fc = selected_option->fc; |
8fc063a2 | 2241 | |
5184a1d6 | 2242 | end: |
939190b3 | 2243 | return ret_fc; |
7b33a0e0 PP |
2244 | } |
2245 | ||
2246 | static | |
2247 | void set_event_default_clock_value(struct bt_notif_iter *notit) | |
2248 | { | |
78cf9df6 | 2249 | struct bt_event *event = |
7b53201c | 2250 | bt_notification_event_borrow_event( |
9e550e5f | 2251 | notit->event_notif); |
78cf9df6 | 2252 | struct bt_stream_class *sc = notit->meta.sc->ir_sc; |
7b33a0e0 PP |
2253 | |
2254 | BT_ASSERT(event); | |
2255 | ||
2256 | if (bt_stream_class_borrow_default_clock_class(sc)) { | |
78cf9df6 | 2257 | bt_event_set_default_clock_value(event, |
7b33a0e0 | 2258 | notit->default_clock_val); |
7b33a0e0 | 2259 | } |
5184a1d6 PP |
2260 | } |
2261 | ||
6ff151ad PP |
2262 | static |
2263 | void notify_new_stream(struct bt_notif_iter *notit, | |
7b53201c | 2264 | struct bt_notification **notification) |
6ff151ad | 2265 | { |
a6918753 | 2266 | enum bt_notif_iter_status status; |
7b53201c | 2267 | struct bt_notification *ret = NULL; |
6ff151ad | 2268 | |
a6918753 PP |
2269 | status = set_current_stream(notit); |
2270 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
8c6884d9 | 2271 | BT_NOTIFICATION_PUT_REF_AND_RESET(ret); |
6ff151ad PP |
2272 | goto end; |
2273 | } | |
2274 | ||
2275 | BT_ASSERT(notit->stream); | |
03e18d5d | 2276 | BT_ASSERT(notit->notif_iter); |
e18f019b | 2277 | ret = bt_notification_stream_beginning_create(notit->notif_iter, |
03e18d5d | 2278 | notit->stream); |
6ff151ad PP |
2279 | if (!ret) { |
2280 | BT_LOGE("Cannot create stream beginning notification: " | |
2281 | "notit-addr=%p, stream-addr=%p", | |
2282 | notit, notit->stream); | |
2283 | return; | |
2284 | } | |
2285 | ||
2286 | end: | |
2287 | *notification = ret; | |
2288 | } | |
2289 | ||
2290 | static | |
2291 | void notify_end_of_stream(struct bt_notif_iter *notit, | |
7b53201c | 2292 | struct bt_notification **notification) |
6ff151ad | 2293 | { |
7b53201c | 2294 | struct bt_notification *ret; |
6ff151ad PP |
2295 | |
2296 | if (!notit->stream) { | |
2297 | BT_LOGE("Cannot create stream for stream notification: " | |
2298 | "notit-addr=%p", notit); | |
2299 | return; | |
2300 | } | |
2301 | ||
03e18d5d | 2302 | BT_ASSERT(notit->notif_iter); |
7b53201c | 2303 | ret = bt_notification_stream_end_create(notit->notif_iter, |
03e18d5d | 2304 | notit->stream); |
6ff151ad PP |
2305 | if (!ret) { |
2306 | BT_LOGE("Cannot create stream beginning notification: " | |
2307 | "notit-addr=%p, stream-addr=%p", | |
2308 | notit, notit->stream); | |
2309 | return; | |
2310 | } | |
2311 | *notification = ret; | |
2312 | } | |
2313 | ||
78586d8a | 2314 | static |
839d52a5 | 2315 | void notify_new_packet(struct bt_notif_iter *notit, |
7b53201c | 2316 | struct bt_notification **notification) |
e98a2d6e | 2317 | { |
a6918753 PP |
2318 | int ret; |
2319 | enum bt_notif_iter_status status; | |
7b53201c | 2320 | struct bt_notification *notif = NULL; |
78cf9df6 | 2321 | const struct bt_stream_class *sc; |
e98a2d6e | 2322 | |
a6918753 PP |
2323 | status = set_current_packet(notit); |
2324 | if (status != BT_NOTIF_ITER_STATUS_OK) { | |
2325 | goto end; | |
e98a2d6e PP |
2326 | } |
2327 | ||
a6918753 | 2328 | BT_ASSERT(notit->packet); |
78cf9df6 | 2329 | sc = notit->meta.sc->ir_sc; |
7b33a0e0 PP |
2330 | BT_ASSERT(sc); |
2331 | ||
2332 | if (bt_stream_class_packets_have_discarded_event_counter_snapshot(sc)) { | |
2333 | BT_ASSERT(notit->snapshots.discarded_events != UINT64_C(-1)); | |
78cf9df6 | 2334 | bt_packet_set_discarded_event_counter_snapshot( |
7b33a0e0 | 2335 | notit->packet, notit->snapshots.discarded_events); |
7b33a0e0 PP |
2336 | } |
2337 | ||
2338 | if (bt_stream_class_packets_have_packet_counter_snapshot(sc)) { | |
2339 | BT_ASSERT(notit->snapshots.packets != UINT64_C(-1)); | |
78cf9df6 | 2340 | bt_packet_set_packet_counter_snapshot( |
7b33a0e0 | 2341 | notit->packet, notit->snapshots.packets); |
7b33a0e0 PP |
2342 | } |
2343 | ||
2344 | if (bt_stream_class_packets_have_default_beginning_clock_value(sc)) { | |
2345 | BT_ASSERT(notit->snapshots.beginning_clock != UINT64_C(-1)); | |
78cf9df6 | 2346 | bt_packet_set_default_beginning_clock_value( |
7b33a0e0 | 2347 | notit->packet, notit->snapshots.beginning_clock); |
7b33a0e0 PP |
2348 | } |
2349 | ||
2350 | if (bt_stream_class_packets_have_default_end_clock_value(sc)) { | |
2351 | BT_ASSERT(notit->snapshots.end_clock != UINT64_C(-1)); | |
78cf9df6 | 2352 | bt_packet_set_default_end_clock_value( |
7b33a0e0 | 2353 | notit->packet, notit->snapshots.end_clock); |
7b33a0e0 | 2354 | } |
a6918753 PP |
2355 | |
2356 | if (notit->packet_header_field) { | |
78cf9df6 | 2357 | ret = bt_packet_move_header_field( |
9e550e5f | 2358 | notit->packet, notit->packet_header_field); |
a6918753 PP |
2359 | if (ret) { |
2360 | goto end; | |
2361 | } | |
2362 | ||
2363 | notit->packet_header_field = NULL; | |
2364 | ||
2365 | /* | |
2366 | * At this point notit->dscopes.trace_packet_header has | |
2367 | * the same value as the packet header field within | |
2368 | * notit->packet. | |
2369 | */ | |
78cf9df6 | 2370 | BT_ASSERT(bt_packet_borrow_header_field( |
9e550e5f | 2371 | notit->packet) == |
a6918753 PP |
2372 | notit->dscopes.trace_packet_header); |
2373 | } | |
2374 | ||
2375 | if (notit->packet_context_field) { | |
78cf9df6 | 2376 | ret = bt_packet_move_context_field( |
9e550e5f | 2377 | notit->packet, notit->packet_context_field); |
a6918753 PP |
2378 | if (ret) { |
2379 | goto end; | |
2380 | } | |
2381 | ||
2382 | notit->packet_context_field = NULL; | |
2383 | ||
2384 | /* | |
2385 | * At this point notit->dscopes.trace_packet_header has | |
2386 | * the same value as the packet header field within | |
2387 | * notit->packet. | |
2388 | */ | |
78cf9df6 | 2389 | BT_ASSERT(bt_packet_borrow_context_field( |
9e550e5f | 2390 | notit->packet) == |
a6918753 PP |
2391 | notit->dscopes.stream_packet_context); |
2392 | } | |
2393 | ||
03e18d5d | 2394 | BT_ASSERT(notit->notif_iter); |
e18f019b | 2395 | notif = bt_notification_packet_beginning_create(notit->notif_iter, |
f7c3ac09 | 2396 | notit->packet); |
a6918753 | 2397 | if (!notif) { |
fdf0e7a0 PP |
2398 | BT_LOGE("Cannot create packet beginning notification: " |
2399 | "notit-addr=%p, packet-addr=%p", | |
2400 | notit, notit->packet); | |
8fc063a2 | 2401 | goto end; |
78586d8a | 2402 | } |
a6918753 | 2403 | |
a6918753 | 2404 | *notification = notif; |
8fc063a2 PP |
2405 | |
2406 | end: | |
2407 | return; | |
e98a2d6e PP |
2408 | } |
2409 | ||
78586d8a | 2410 | static |
839d52a5 | 2411 | void notify_end_of_packet(struct bt_notif_iter *notit, |
7b53201c | 2412 | struct bt_notification **notification) |
e98a2d6e | 2413 | { |
7b53201c | 2414 | struct bt_notification *notif; |
e98a2d6e | 2415 | |
e98a2d6e | 2416 | if (!notit->packet) { |
78586d8a | 2417 | return; |
e98a2d6e PP |
2418 | } |
2419 | ||
7b33a0e0 PP |
2420 | /* Update default clock from packet's end time */ |
2421 | if (notit->snapshots.end_clock != UINT64_C(-1)) { | |
2422 | notit->default_clock_val = notit->snapshots.end_clock; | |
2423 | } | |
2424 | ||
03e18d5d | 2425 | BT_ASSERT(notit->notif_iter); |
7b53201c | 2426 | notif = bt_notification_packet_end_create(notit->notif_iter, |
03e18d5d | 2427 | notit->packet); |
a6918753 | 2428 | if (!notif) { |
fdf0e7a0 PP |
2429 | BT_LOGE("Cannot create packet end notification: " |
2430 | "notit-addr=%p, packet-addr=%p", | |
2431 | notit, notit->packet); | |
78586d8a | 2432 | return; |
e5815ba2 | 2433 | |
78586d8a | 2434 | } |
e98a2d6e | 2435 | |
8c6884d9 | 2436 | BT_PACKET_PUT_REF_AND_RESET(notit->packet); |
a6918753 | 2437 | *notification = notif; |
e98a2d6e PP |
2438 | } |
2439 | ||
c44c3e70 | 2440 | BT_HIDDEN |
7b33a0e0 | 2441 | struct bt_notif_iter *bt_notif_iter_create(struct ctf_trace_class *tc, |
e98a2d6e | 2442 | size_t max_request_sz, |
839d52a5 | 2443 | struct bt_notif_iter_medium_ops medops, void *data) |
e98a2d6e | 2444 | { |
839d52a5 | 2445 | struct bt_notif_iter *notit = NULL; |
939190b3 PP |
2446 | struct bt_bfcr_cbs cbs = { |
2447 | .classes = { | |
2448 | .signed_int = bfcr_signed_int_cb, | |
2449 | .unsigned_int = bfcr_unsigned_int_cb, | |
2450 | .floating_point = bfcr_floating_point_cb, | |
2451 | .string_begin = bfcr_string_begin_cb, | |
2452 | .string = bfcr_string_cb, | |
2453 | .string_end = bfcr_string_end_cb, | |
2454 | .compound_begin = bfcr_compound_begin_cb, | |
2455 | .compound_end = bfcr_compound_end_cb, | |
e98a2d6e PP |
2456 | }, |
2457 | .query = { | |
939190b3 PP |
2458 | .get_sequence_length = bfcr_get_sequence_length_cb, |
2459 | .borrow_variant_selected_field_class = bfcr_borrow_variant_selected_field_class_cb, | |
e98a2d6e PP |
2460 | }, |
2461 | }; | |
2462 | ||
7b33a0e0 | 2463 | BT_ASSERT(tc); |
8b45963b | 2464 | BT_ASSERT(medops.request_bytes); |
a6918753 | 2465 | BT_ASSERT(medops.borrow_stream); |
fdf0e7a0 | 2466 | BT_LOGD("Creating CTF plugin notification iterator: " |
10b7a2e4 PP |
2467 | "trace-addr=%p, max-request-size=%zu, " |
2468 | "data=%p", tc, max_request_sz, data); | |
839d52a5 | 2469 | notit = g_new0(struct bt_notif_iter, 1); |
e98a2d6e | 2470 | if (!notit) { |
fdf0e7a0 | 2471 | BT_LOGE_STR("Failed to allocate one CTF plugin notification iterator."); |
e98a2d6e PP |
2472 | goto end; |
2473 | } | |
7b33a0e0 | 2474 | notit->meta.tc = tc; |
e98a2d6e PP |
2475 | notit->medium.medops = medops; |
2476 | notit->medium.max_request_sz = max_request_sz; | |
2477 | notit->medium.data = data; | |
e98a2d6e | 2478 | notit->stack = stack_new(notit); |
7b33a0e0 PP |
2479 | notit->stored_values = g_array_new(FALSE, TRUE, sizeof(uint64_t)); |
2480 | g_array_set_size(notit->stored_values, tc->stored_value_count); | |
2481 | ||
e98a2d6e | 2482 | if (!notit->stack) { |
fdf0e7a0 | 2483 | BT_LOGE_STR("Failed to create field stack."); |
c44c3e70 | 2484 | goto error; |
e98a2d6e PP |
2485 | } |
2486 | ||
939190b3 PP |
2487 | notit->bfcr = bt_bfcr_create(cbs, notit); |
2488 | if (!notit->bfcr) { | |
2489 | BT_LOGE_STR("Failed to create binary class reader (BFCR)."); | |
c44c3e70 | 2490 | goto error; |
e98a2d6e PP |
2491 | } |
2492 | ||
839d52a5 | 2493 | bt_notif_iter_reset(notit); |
fdf0e7a0 | 2494 | BT_LOGD("Created CTF plugin notification iterator: " |
10b7a2e4 | 2495 | "trace-addr=%p, max-request-size=%zu, " |
fdf0e7a0 | 2496 | "data=%p, notit-addr=%p", |
10b7a2e4 | 2497 | tc, max_request_sz, data, notit); |
bb230c9b | 2498 | notit->cur_packet_offset = 0; |
fdf0e7a0 | 2499 | |
e98a2d6e PP |
2500 | end: |
2501 | return notit; | |
fdf0e7a0 | 2502 | |
c44c3e70 | 2503 | error: |
839d52a5 | 2504 | bt_notif_iter_destroy(notit); |
c44c3e70 JG |
2505 | notit = NULL; |
2506 | goto end; | |
e98a2d6e PP |
2507 | } |
2508 | ||
839d52a5 | 2509 | void bt_notif_iter_destroy(struct bt_notif_iter *notit) |
e98a2d6e | 2510 | { |
8c6884d9 PP |
2511 | BT_PACKET_PUT_REF_AND_RESET(notit->packet); |
2512 | BT_STREAM_PUT_REF_AND_RESET(notit->stream); | |
a6918753 | 2513 | release_all_dscopes(notit); |
e98a2d6e | 2514 | |
fdf0e7a0 PP |
2515 | BT_LOGD("Destroying CTF plugin notification iterator: addr=%p", notit); |
2516 | ||
e98a2d6e | 2517 | if (notit->stack) { |
fdf0e7a0 | 2518 | BT_LOGD_STR("Destroying field stack."); |
e98a2d6e PP |
2519 | stack_destroy(notit->stack); |
2520 | } | |
2521 | ||
939190b3 PP |
2522 | if (notit->bfcr) { |
2523 | BT_LOGD("Destroying BFCR: bfcr-addr=%p", notit->bfcr); | |
2524 | bt_bfcr_destroy(notit->bfcr); | |
e98a2d6e PP |
2525 | } |
2526 | ||
7b33a0e0 PP |
2527 | if (notit->stored_values) { |
2528 | g_array_free(notit->stored_values, TRUE); | |
5f870343 | 2529 | } |
fdf0e7a0 | 2530 | |
e98a2d6e PP |
2531 | g_free(notit); |
2532 | } | |
2533 | ||
839d52a5 PP |
2534 | enum bt_notif_iter_status bt_notif_iter_get_next_notification( |
2535 | struct bt_notif_iter *notit, | |
834e9996 | 2536 | struct bt_self_notification_iterator *notif_iter, |
7b53201c | 2537 | struct bt_notification **notification) |
e98a2d6e | 2538 | { |
839d52a5 | 2539 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
e98a2d6e | 2540 | |
8b45963b PP |
2541 | BT_ASSERT(notit); |
2542 | BT_ASSERT(notification); | |
e98a2d6e | 2543 | |
f7c3ac09 PP |
2544 | if (notit->state == STATE_DONE) { |
2545 | status = BT_NOTIF_ITER_STATUS_EOF; | |
2546 | goto end; | |
2547 | } | |
2548 | ||
03e18d5d | 2549 | notit->notif_iter = notif_iter; |
6ff151ad | 2550 | |
8fc063a2 | 2551 | BT_LOGV("Getting next notification: notit-addr=%p", notit); |
fdf0e7a0 | 2552 | |
e98a2d6e PP |
2553 | while (true) { |
2554 | status = handle_state(notit); | |
839d52a5 PP |
2555 | if (status == BT_NOTIF_ITER_STATUS_AGAIN) { |
2556 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_AGAIN."); | |
7cdc2bab MD |
2557 | goto end; |
2558 | } | |
a6918753 | 2559 | |
839d52a5 PP |
2560 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
2561 | if (status == BT_NOTIF_ITER_STATUS_EOF) { | |
6ff151ad PP |
2562 | enum state next_state = notit->state; |
2563 | ||
839d52a5 | 2564 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_EOF."); |
6ff151ad PP |
2565 | |
2566 | if (notit->packet) { | |
a6918753 PP |
2567 | notify_end_of_packet(notit, |
2568 | notification); | |
6ff151ad | 2569 | } else { |
a6918753 PP |
2570 | notify_end_of_stream(notit, |
2571 | notification); | |
6ff151ad PP |
2572 | next_state = STATE_DONE; |
2573 | } | |
2574 | ||
2575 | if (!*notification) { | |
2576 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
2577 | goto end; | |
2578 | } | |
2579 | ||
2580 | status = BT_NOTIF_ITER_STATUS_OK; | |
2581 | notit->state = next_state; | |
e98a2d6e | 2582 | } else { |
fdf0e7a0 PP |
2583 | BT_LOGW("Cannot handle state: " |
2584 | "notit-addr=%p, state=%s", | |
2585 | notit, state_string(notit->state)); | |
e98a2d6e | 2586 | } |
a6918753 | 2587 | |
e98a2d6e PP |
2588 | goto end; |
2589 | } | |
2590 | ||
2591 | switch (notit->state) { | |
6ff151ad PP |
2592 | case STATE_EMIT_NOTIF_NEW_STREAM: |
2593 | /* notify_new_stream() logs errors */ | |
2594 | notify_new_stream(notit, notification); | |
7b33a0e0 | 2595 | |
6ff151ad PP |
2596 | if (!*notification) { |
2597 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
2598 | } | |
7b33a0e0 | 2599 | |
6ff151ad PP |
2600 | notit->stream_begin_emitted = true; |
2601 | goto end; | |
e98a2d6e | 2602 | case STATE_EMIT_NOTIF_NEW_PACKET: |
fdf0e7a0 | 2603 | /* notify_new_packet() logs errors */ |
e98a2d6e | 2604 | notify_new_packet(notit, notification); |
7b33a0e0 | 2605 | |
e98a2d6e | 2606 | if (!*notification) { |
839d52a5 | 2607 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e | 2608 | } |
a6918753 | 2609 | |
e98a2d6e PP |
2610 | goto end; |
2611 | case STATE_EMIT_NOTIF_EVENT: | |
a6918753 | 2612 | BT_ASSERT(notit->event_notif); |
7b33a0e0 | 2613 | set_event_default_clock_value(notit); |
3fd7b79d PP |
2614 | *notification = notit->event_notif; |
2615 | notit->event_notif = NULL; | |
e98a2d6e PP |
2616 | goto end; |
2617 | case STATE_EMIT_NOTIF_END_OF_PACKET: | |
fdf0e7a0 | 2618 | /* notify_end_of_packet() logs errors */ |
e98a2d6e | 2619 | notify_end_of_packet(notit, notification); |
7b33a0e0 | 2620 | |
e98a2d6e | 2621 | if (!*notification) { |
839d52a5 | 2622 | status = BT_NOTIF_ITER_STATUS_ERROR; |
e98a2d6e | 2623 | } |
a6918753 | 2624 | |
e98a2d6e PP |
2625 | goto end; |
2626 | default: | |
2627 | /* Non-emitting state: continue */ | |
2628 | break; | |
2629 | } | |
2630 | } | |
2631 | ||
2632 | end: | |
2633 | return status; | |
2634 | } | |
87187cbf PP |
2635 | |
2636 | BT_HIDDEN | |
a6918753 | 2637 | enum bt_notif_iter_status bt_notif_iter_borrow_packet_header_context_fields( |
839d52a5 | 2638 | struct bt_notif_iter *notit, |
78cf9df6 PP |
2639 | struct bt_field **packet_header_field, |
2640 | struct bt_field **packet_context_field) | |
87187cbf | 2641 | { |
bb230c9b | 2642 | int ret; |
839d52a5 | 2643 | enum bt_notif_iter_status status = BT_NOTIF_ITER_STATUS_OK; |
87187cbf | 2644 | |
8b45963b | 2645 | BT_ASSERT(notit); |
87187cbf PP |
2646 | |
2647 | if (notit->state == STATE_EMIT_NOTIF_NEW_PACKET) { | |
2648 | /* We're already there */ | |
2649 | goto set_fields; | |
2650 | } | |
2651 | ||
2652 | while (true) { | |
2653 | status = handle_state(notit); | |
839d52a5 PP |
2654 | if (status == BT_NOTIF_ITER_STATUS_AGAIN) { |
2655 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_AGAIN."); | |
87187cbf PP |
2656 | goto end; |
2657 | } | |
839d52a5 PP |
2658 | if (status != BT_NOTIF_ITER_STATUS_OK) { |
2659 | if (status == BT_NOTIF_ITER_STATUS_EOF) { | |
2660 | BT_LOGV_STR("Medium returned BT_NOTIF_ITER_STATUS_EOF."); | |
87187cbf | 2661 | } else { |
fdf0e7a0 PP |
2662 | BT_LOGW("Cannot handle state: " |
2663 | "notit-addr=%p, state=%s", | |
2664 | notit, state_string(notit->state)); | |
87187cbf PP |
2665 | } |
2666 | goto end; | |
2667 | } | |
2668 | ||
2669 | switch (notit->state) { | |
2670 | case STATE_EMIT_NOTIF_NEW_PACKET: | |
2671 | /* | |
2672 | * Packet header and context fields are | |
2673 | * potentially decoded (or they don't exist). | |
2674 | */ | |
2675 | goto set_fields; | |
2676 | case STATE_INIT: | |
6ff151ad | 2677 | case STATE_EMIT_NOTIF_NEW_STREAM: |
87187cbf PP |
2678 | case STATE_DSCOPE_TRACE_PACKET_HEADER_BEGIN: |
2679 | case STATE_DSCOPE_TRACE_PACKET_HEADER_CONTINUE: | |
2680 | case STATE_AFTER_TRACE_PACKET_HEADER: | |
2681 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_BEGIN: | |
2682 | case STATE_DSCOPE_STREAM_PACKET_CONTEXT_CONTINUE: | |
2683 | case STATE_AFTER_STREAM_PACKET_CONTEXT: | |
2684 | /* Non-emitting state: continue */ | |
2685 | break; | |
2686 | default: | |
2687 | /* | |
2688 | * We should never get past the | |
2689 | * STATE_EMIT_NOTIF_NEW_PACKET state. | |
2690 | */ | |
fdf0e7a0 PP |
2691 | BT_LOGF("Unexpected state: notit-addr=%p, state=%s", |
2692 | notit, state_string(notit->state)); | |
0fbb9a9f | 2693 | abort(); |
87187cbf PP |
2694 | } |
2695 | } | |
2696 | ||
2697 | set_fields: | |
a6918753 PP |
2698 | ret = set_current_packet_content_sizes(notit); |
2699 | if (ret) { | |
2700 | status = BT_NOTIF_ITER_STATUS_ERROR; | |
2701 | goto end; | |
2702 | } | |
2703 | ||
87187cbf | 2704 | if (packet_header_field) { |
a6918753 | 2705 | *packet_header_field = notit->dscopes.trace_packet_header; |
87187cbf PP |
2706 | } |
2707 | ||
2708 | if (packet_context_field) { | |
a6918753 | 2709 | *packet_context_field = notit->dscopes.stream_packet_context; |
87187cbf PP |
2710 | } |
2711 | ||
2712 | end: | |
2713 | return status; | |
2714 | } | |
55fa6491 PP |
2715 | |
2716 | BT_HIDDEN | |
839d52a5 | 2717 | void bt_notif_iter_set_medops_data(struct bt_notif_iter *notit, |
55fa6491 PP |
2718 | void *medops_data) |
2719 | { | |
8b45963b | 2720 | BT_ASSERT(notit); |
55fa6491 PP |
2721 | notit->medium.data = medops_data; |
2722 | } | |
bb230c9b JG |
2723 | |
2724 | BT_HIDDEN | |
839d52a5 PP |
2725 | enum bt_notif_iter_status bt_notif_iter_seek( |
2726 | struct bt_notif_iter *notit, off_t offset) | |
bb230c9b | 2727 | { |
839d52a5 PP |
2728 | enum bt_notif_iter_status ret = BT_NOTIF_ITER_STATUS_OK; |
2729 | enum bt_notif_iter_medium_status medium_status; | |
bb230c9b | 2730 | |
8b45963b | 2731 | BT_ASSERT(notit); |
bb230c9b JG |
2732 | if (offset < 0) { |
2733 | BT_LOGE("Cannot seek to negative offset: offset=%jd", offset); | |
839d52a5 | 2734 | ret = BT_NOTIF_ITER_STATUS_INVAL; |
bb230c9b JG |
2735 | goto end; |
2736 | } | |
2737 | ||
2738 | if (!notit->medium.medops.seek) { | |
839d52a5 | 2739 | ret = BT_NOTIF_ITER_STATUS_UNSUPPORTED; |
bb230c9b JG |
2740 | BT_LOGD("Aborting seek as the iterator's underlying media does not implement seek support."); |
2741 | goto end; | |
2742 | } | |
2743 | ||
2744 | medium_status = notit->medium.medops.seek( | |
7b33a0e0 | 2745 | BT_NOTIF_ITER_SEEK_WHENCE_SET, offset, notit->medium.data); |
839d52a5 PP |
2746 | if (medium_status != BT_NOTIF_ITER_MEDIUM_STATUS_OK) { |
2747 | if (medium_status == BT_NOTIF_ITER_MEDIUM_STATUS_EOF) { | |
2748 | ret = BT_NOTIF_ITER_STATUS_EOF; | |
bb230c9b | 2749 | } else { |
839d52a5 | 2750 | ret = BT_NOTIF_ITER_STATUS_ERROR; |
bb230c9b JG |
2751 | goto end; |
2752 | } | |
2753 | } | |
2754 | ||
839d52a5 | 2755 | bt_notif_iter_reset(notit); |
bb230c9b | 2756 | notit->cur_packet_offset = offset; |
7b33a0e0 | 2757 | |
bb230c9b JG |
2758 | end: |
2759 | return ret; | |
2760 | } | |
2761 | ||
2762 | BT_HIDDEN | |
7b33a0e0 | 2763 | off_t bt_notif_iter_get_current_packet_offset(struct bt_notif_iter *notit) |
bb230c9b | 2764 | { |
8b45963b | 2765 | BT_ASSERT(notit); |
bb230c9b JG |
2766 | return notit->cur_packet_offset; |
2767 | } | |
2768 | ||
2769 | BT_HIDDEN | |
839d52a5 PP |
2770 | off_t bt_notif_iter_get_current_packet_size( |
2771 | struct bt_notif_iter *notit) | |
bb230c9b | 2772 | { |
8b45963b | 2773 | BT_ASSERT(notit); |
7b33a0e0 PP |
2774 | return notit->cur_exp_packet_total_size; |
2775 | } | |
2776 | ||
2777 | BT_HIDDEN | |
2778 | void bt_notif_trace_class_changed(struct bt_notif_iter *notit) | |
2779 | { | |
2780 | if (notit->meta.tc->stored_value_count > notit->stored_values->len) { | |
2781 | g_array_set_size(notit->stored_values, | |
2782 | notit->meta.tc->stored_value_count); | |
2783 | } | |
2784 | } | |
2785 | ||
2786 | BT_HIDDEN | |
2787 | enum bt_notif_iter_status bt_notif_iter_get_packet_properties( | |
2788 | struct bt_notif_iter *notit, | |
2789 | struct bt_notif_iter_packet_properties *props) | |
2790 | { | |
2791 | BT_ASSERT(notit); | |
2792 | BT_ASSERT(props); | |
2793 | ||
2794 | props->exp_packet_total_size = | |
2795 | (uint64_t) notit->cur_exp_packet_total_size; | |
2796 | props->exp_packet_content_size = | |
2797 | (uint64_t) notit->cur_exp_packet_content_size; | |
2798 | BT_ASSERT(props->stream_class_id >= 0); | |
2799 | props->stream_class_id = (uint64_t) notit->cur_stream_class_id; | |
2800 | props->data_stream_id = notit->cur_data_stream_id; | |
2801 | props->snapshots.discarded_events = notit->snapshots.discarded_events; | |
2802 | props->snapshots.packets = notit->snapshots.packets; | |
2803 | props->snapshots.beginning_clock = notit->snapshots.beginning_clock; | |
2804 | props->snapshots.end_clock = notit->snapshots.end_clock; | |
2805 | return BT_NOTIF_ITER_STATUS_OK; | |
bb230c9b | 2806 | } |