58809eb2e2aca4ab24c7d26f90f348805cdd8be2
[babeltrace.git] / src / plugins / lttng-utils / debug-info / debug-info.c
1 /*
2 * Babeltrace - Debug Information State Tracker
3 *
4 * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
5 * Copyright (c) 2015 Philippe Proulx <pproulx@efficios.com>
6 * Copyright (c) 2015 Antoine Busque <abusque@efficios.com>
7 * Copyright (c) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 * Copyright (c) 2019 Francis Deslauriers <francis.deslauriers@efficios.com>
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * SOFTWARE.
27 */
28
29 #define BT_COMP_LOG_SELF_COMP self_comp
30 #define BT_LOG_OUTPUT_LEVEL log_level
31 #define BT_LOG_TAG "PLUGIN/FLT.LTTNG-UTILS.DEBUG-INFO"
32 #include "logging/comp-logging.h"
33
34 #include <glib.h>
35
36 #include "common/assert.h"
37 #include "common/common.h"
38 #include "fd-cache/fd-cache.h"
39
40 #include "bin-info.h"
41 #include "debug-info.h"
42 #include "trace-ir-data-copy.h"
43 #include "trace-ir-mapping.h"
44 #include "trace-ir-metadata-copy.h"
45 #include "utils.h"
46
47 #define DEFAULT_DEBUG_INFO_FIELD_NAME "debug_info"
48 #define LTTNG_UST_STATEDUMP_PREFIX "lttng_ust"
49 #define VPID_FIELD_NAME "vpid"
50 #define IP_FIELD_NAME "ip"
51 #define BADDR_FIELD_NAME "baddr"
52 #define CRC32_FIELD_NAME "crc"
53 #define BUILD_ID_FIELD_NAME "build_id"
54 #define FILENAME_FIELD_NAME "filename"
55 #define IS_PIC_FIELD_NAME "is_pic"
56 #define MEMSZ_FIELD_NAME "memsz"
57 #define PATH_FIELD_NAME "path"
58
59 struct debug_info_component {
60 bt_logging_level log_level;
61 bt_self_component *self_comp;
62 gchar *arg_debug_dir;
63 gchar *arg_debug_info_field_name;
64 gchar *arg_target_prefix;
65 bt_bool arg_full_path;
66 };
67
68 struct debug_info_msg_iter {
69 bt_logging_level log_level;
70 struct debug_info_component *debug_info_component;
71 bt_self_message_iterator *input_iterator;
72 bt_self_component *self_comp;
73 bt_self_component_port_input_message_iterator *msg_iter;
74
75 struct trace_ir_maps *ir_maps;
76 /* in_trace -> debug_info_mapping. */
77 GHashTable *debug_info_map;
78
79 struct bt_fd_cache fd_cache;
80 };
81
82 struct debug_info_source {
83 /* Strings are owned by debug_info_source. */
84 gchar *func;
85 /*
86 * Store the line number as a string so that the allocation and
87 * conversion to string is only done once.
88 */
89 gchar *line_no;
90 gchar *src_path;
91 /* short_src_path points inside src_path, no need to free. */
92 const gchar *short_src_path;
93 gchar *bin_path;
94 /* short_bin_path points inside bin_path, no need to free. */
95 const gchar *short_bin_path;
96 /*
97 * Location within the binary. Either absolute (@0x1234) or
98 * relative (+0x4321).
99 */
100 gchar *bin_loc;
101 };
102
103 struct proc_debug_info_sources {
104 /*
105 * Hash table: base address (pointer to uint64_t) to bin info; owned by
106 * proc_debug_info_sources.
107 */
108 GHashTable *baddr_to_bin_info;
109
110 /*
111 * Hash table: IP (pointer to uint64_t) to (struct debug_info_source *);
112 * owned by proc_debug_info_sources.
113 */
114 GHashTable *ip_to_debug_info_src;
115 };
116
117 struct debug_info {
118 bt_logging_level log_level;
119 bt_self_component *self_comp;
120 struct debug_info_component *comp;
121 const bt_trace *input_trace;
122 bt_listener_id destruction_listener_id;
123
124 /*
125 * Hash table of VPIDs (pointer to int64_t) to
126 * (struct proc_debug_info_sources*); owned by debug_info.
127 */
128 GHashTable *vpid_to_proc_dbg_info_src;
129 GQuark q_statedump_bin_info;
130 GQuark q_statedump_debug_link;
131 GQuark q_statedump_build_id;
132 GQuark q_statedump_start;
133 GQuark q_dl_open;
134 GQuark q_lib_load;
135 GQuark q_lib_unload;
136 struct bt_fd_cache *fd_cache; /* Weak ref. Owned by the iterator. */
137 };
138
139 static
140 int debug_info_init(struct debug_info *info)
141 {
142 info->q_statedump_bin_info = g_quark_from_string(
143 "lttng_ust_statedump:bin_info");
144 info->q_statedump_debug_link = g_quark_from_string(
145 "lttng_ust_statedump:debug_link");
146 info->q_statedump_build_id = g_quark_from_string(
147 "lttng_ust_statedump:build_id");
148 info->q_statedump_start = g_quark_from_string(
149 "lttng_ust_statedump:start");
150 info->q_dl_open = g_quark_from_string("lttng_ust_dl:dlopen");
151 info->q_lib_load = g_quark_from_string("lttng_ust_lib:load");
152 info->q_lib_unload = g_quark_from_string("lttng_ust_lib:unload");
153
154 return bin_info_init(info->log_level, info->self_comp);
155 }
156
157 static
158 void debug_info_source_destroy(struct debug_info_source *debug_info_src)
159 {
160 if (!debug_info_src) {
161 return;
162 }
163
164 g_free(debug_info_src->func);
165 g_free(debug_info_src->line_no);
166 g_free(debug_info_src->src_path);
167 g_free(debug_info_src->bin_path);
168 g_free(debug_info_src->bin_loc);
169 g_free(debug_info_src);
170 }
171
172 static
173 struct debug_info_source *debug_info_source_create_from_bin(
174 struct bin_info *bin, uint64_t ip,
175 bt_self_component *self_comp)
176 {
177 int ret;
178 struct debug_info_source *debug_info_src = NULL;
179 struct source_location *src_loc = NULL;
180 bt_logging_level log_level = bin->log_level;
181
182 debug_info_src = g_new0(struct debug_info_source, 1);
183
184 if (!debug_info_src) {
185 goto end;
186 }
187
188 /* Lookup function name */
189 ret = bin_info_lookup_function_name(bin, ip, &debug_info_src->func);
190 if (ret) {
191 goto error;
192 }
193
194 /* Can't retrieve src_loc from ELF, or could not find binary, skip. */
195 if (!bin->is_elf_only || !debug_info_src->func) {
196 /* Lookup source location */
197 ret = bin_info_lookup_source_location(bin, ip, &src_loc);
198 if (ret) {
199 BT_COMP_LOGI("Failed to lookup source location: ret=%d", ret);
200 }
201 }
202
203 if (src_loc) {
204 debug_info_src->line_no =
205 g_strdup_printf("%"PRId64, src_loc->line_no);
206 if (!debug_info_src->line_no) {
207 BT_COMP_LOGE("Error occured when setting line_no field.");
208 goto error;
209 }
210
211 if (src_loc->filename) {
212 debug_info_src->src_path = g_strdup(src_loc->filename);
213 if (!debug_info_src->src_path) {
214 goto error;
215 }
216
217 debug_info_src->short_src_path = get_filename_from_path(
218 debug_info_src->src_path);
219 }
220 source_location_destroy(src_loc);
221 }
222
223 if (bin->elf_path) {
224 debug_info_src->bin_path = g_strdup(bin->elf_path);
225 if (!debug_info_src->bin_path) {
226 goto error;
227 }
228
229 debug_info_src->short_bin_path = get_filename_from_path(
230 debug_info_src->bin_path);
231
232 ret = bin_info_get_bin_loc(bin, ip, &(debug_info_src->bin_loc));
233 if (ret) {
234 goto error;
235 }
236 }
237
238 end:
239 return debug_info_src;
240
241 error:
242 debug_info_source_destroy(debug_info_src);
243 return NULL;
244 }
245
246 static
247 void proc_debug_info_sources_destroy(
248 struct proc_debug_info_sources *proc_dbg_info_src)
249 {
250 if (!proc_dbg_info_src) {
251 return;
252 }
253
254 if (proc_dbg_info_src->baddr_to_bin_info) {
255 g_hash_table_destroy(proc_dbg_info_src->baddr_to_bin_info);
256 }
257
258 if (proc_dbg_info_src->ip_to_debug_info_src) {
259 g_hash_table_destroy(proc_dbg_info_src->ip_to_debug_info_src);
260 }
261
262 g_free(proc_dbg_info_src);
263 }
264
265 static
266 struct proc_debug_info_sources *proc_debug_info_sources_create(void)
267 {
268 struct proc_debug_info_sources *proc_dbg_info_src = NULL;
269
270 proc_dbg_info_src = g_new0(struct proc_debug_info_sources, 1);
271 if (!proc_dbg_info_src) {
272 goto end;
273 }
274
275 proc_dbg_info_src->baddr_to_bin_info = g_hash_table_new_full(
276 g_int64_hash, g_int64_equal, (GDestroyNotify) g_free,
277 (GDestroyNotify) bin_info_destroy);
278 if (!proc_dbg_info_src->baddr_to_bin_info) {
279 goto error;
280 }
281
282 proc_dbg_info_src->ip_to_debug_info_src = g_hash_table_new_full(
283 g_int64_hash, g_int64_equal, (GDestroyNotify) g_free,
284 (GDestroyNotify) debug_info_source_destroy);
285 if (!proc_dbg_info_src->ip_to_debug_info_src) {
286 goto error;
287 }
288
289 end:
290 return proc_dbg_info_src;
291
292 error:
293 proc_debug_info_sources_destroy(proc_dbg_info_src);
294 return NULL;
295 }
296
297 static
298 struct proc_debug_info_sources *proc_debug_info_sources_ht_get_entry(
299 GHashTable *ht, int64_t vpid)
300 {
301 gpointer key = g_new0(int64_t, 1);
302 struct proc_debug_info_sources *proc_dbg_info_src = NULL;
303
304 if (!key) {
305 goto end;
306 }
307
308 *((int64_t *) key) = vpid;
309
310 /* Exists? Return it */
311 proc_dbg_info_src = g_hash_table_lookup(ht, key);
312 if (proc_dbg_info_src) {
313 goto end;
314 }
315
316 /* Otherwise, create and return it */
317 proc_dbg_info_src = proc_debug_info_sources_create();
318 if (!proc_dbg_info_src) {
319 goto end;
320 }
321
322 g_hash_table_insert(ht, key, proc_dbg_info_src);
323 /* Ownership passed to ht */
324 key = NULL;
325 end:
326 g_free(key);
327 return proc_dbg_info_src;
328 }
329
330 static inline
331 const bt_field *event_borrow_payload_field(const bt_event *event,
332 const char *field_name)
333 {
334 const bt_field *event_payload, *field;
335
336 event_payload = bt_event_borrow_payload_field_const(event);
337 BT_ASSERT(event_payload);
338
339 field = bt_field_structure_borrow_member_field_by_name_const(
340 event_payload, field_name);
341 return field;
342 }
343
344 static inline
345 const bt_field *event_borrow_common_context_field(const bt_event *event,
346 const char *field_name)
347 {
348 const bt_field *event_common_ctx, *field = NULL;
349
350 event_common_ctx = bt_event_borrow_common_context_field_const(event);
351 if (!event_common_ctx) {
352 goto end;
353 }
354
355 field = bt_field_structure_borrow_member_field_by_name_const(
356 event_common_ctx, field_name);
357
358 end:
359 return field;
360 }
361
362 static inline
363 void event_get_common_context_signed_integer_field_value(
364 const bt_event *event, const char *field_name, int64_t *value)
365 {
366 *value = bt_field_integer_signed_get_value(
367 event_borrow_common_context_field(event, field_name));
368 }
369
370 static inline
371 int event_get_payload_build_id_length(const bt_event *event,
372 const char *field_name, uint64_t *build_id_len)
373 {
374 const bt_field *build_id_field;
375 const bt_field_class *build_id_field_class;
376
377 build_id_field = event_borrow_payload_field(event, field_name);
378 build_id_field_class = bt_field_borrow_class_const(build_id_field);
379
380 BT_ASSERT(bt_field_class_get_type(build_id_field_class) ==
381 BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY);
382 BT_ASSERT(bt_field_class_get_type(
383 bt_field_class_array_borrow_element_field_class_const(
384 build_id_field_class)) ==
385 BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER);
386
387 *build_id_len = bt_field_array_get_length(build_id_field);
388
389 return 0;
390 }
391
392 static inline
393 int event_get_payload_build_id_value(const bt_event *event,
394 const char *field_name, uint8_t *build_id)
395 {
396 const bt_field *curr_field, *build_id_field;
397 const bt_field_class *build_id_field_class;
398 uint64_t i, build_id_len;
399 int ret;
400
401 ret = 0;
402
403 build_id_field = event_borrow_payload_field(event, field_name);
404 build_id_field_class = bt_field_borrow_class_const(build_id_field);
405
406 BT_ASSERT(bt_field_class_get_type(build_id_field_class) ==
407 BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY);
408 BT_ASSERT(bt_field_class_get_type(
409 bt_field_class_array_borrow_element_field_class_const(
410 build_id_field_class)) ==
411 BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER);
412
413 build_id_len = bt_field_array_get_length(build_id_field);
414
415 for (i = 0; i < build_id_len; i++) {
416 curr_field =
417 bt_field_array_borrow_element_field_by_index_const(
418 build_id_field, i);
419
420 build_id[i] = bt_field_integer_unsigned_get_value(curr_field);
421 }
422
423 return ret;
424 }
425
426 static
427 void event_get_payload_unsigned_integer_field_value(const bt_event *event,
428 const char *field_name, uint64_t *value)
429 {
430 *value = bt_field_integer_unsigned_get_value(
431 event_borrow_payload_field(event, field_name));
432 }
433
434 static
435 void event_get_payload_string_field_value(const bt_event *event,
436 const char *field_name, const char **value)
437 {
438 *value = bt_field_string_get_value(
439 event_borrow_payload_field(event, field_name));
440 }
441
442 static inline
443 bool event_has_payload_field(const bt_event *event,
444 const char *field_name)
445 {
446 return event_borrow_payload_field(event, field_name);
447 }
448
449 static
450 struct debug_info_source *proc_debug_info_sources_get_entry(
451 struct debug_info *debug_info,
452 struct proc_debug_info_sources *proc_dbg_info_src, uint64_t ip)
453 {
454 struct debug_info_source *debug_info_src = NULL;
455 gpointer key = g_new0(uint64_t, 1);
456 GHashTableIter iter;
457 gpointer baddr, value;
458
459 if (!key) {
460 goto end;
461 }
462
463 *((uint64_t *) key) = ip;
464
465 /* Look in IP to debug infos hash table first. */
466 debug_info_src = g_hash_table_lookup(
467 proc_dbg_info_src->ip_to_debug_info_src,
468 key);
469 if (debug_info_src) {
470 goto end;
471 }
472
473 /* Check in all bin_infos. */
474 g_hash_table_iter_init(&iter, proc_dbg_info_src->baddr_to_bin_info);
475
476 while (g_hash_table_iter_next(&iter, &baddr, &value))
477 {
478 struct bin_info *bin = value;
479
480 if (!bin_info_has_address(value, ip)) {
481 continue;
482 }
483
484 /*
485 * Found; add it to cache.
486 *
487 * FIXME: this should be bounded in size (and implement
488 * a caching policy), and entries should be prunned when
489 * libraries are unmapped.
490 */
491 debug_info_src = debug_info_source_create_from_bin(bin, ip,
492 debug_info->self_comp);
493 if (debug_info_src) {
494 g_hash_table_insert(
495 proc_dbg_info_src->ip_to_debug_info_src,
496 key, debug_info_src);
497 /* Ownership passed to ht. */
498 key = NULL;
499 }
500 break;
501 }
502
503 end:
504 free(key);
505 return debug_info_src;
506 }
507
508 static
509 struct debug_info_source *debug_info_query(struct debug_info *debug_info,
510 int64_t vpid, uint64_t ip)
511 {
512 struct debug_info_source *dbg_info_src = NULL;
513 struct proc_debug_info_sources *proc_dbg_info_src;
514
515 proc_dbg_info_src = proc_debug_info_sources_ht_get_entry(
516 debug_info->vpid_to_proc_dbg_info_src, vpid);
517 if (!proc_dbg_info_src) {
518 goto end;
519 }
520
521 dbg_info_src = proc_debug_info_sources_get_entry(debug_info,
522 proc_dbg_info_src, ip);
523
524 end:
525 return dbg_info_src;
526 }
527
528 static
529 struct debug_info *debug_info_create(struct debug_info_component *comp,
530 const bt_trace *trace, struct bt_fd_cache *fdc)
531 {
532 int ret;
533 struct debug_info *debug_info;
534
535 BT_ASSERT(comp);
536 BT_ASSERT(trace);
537 BT_ASSERT(fdc);
538
539 debug_info = g_new0(struct debug_info, 1);
540 if (!debug_info) {
541 goto end;
542 }
543
544 debug_info->log_level = comp->log_level;
545 debug_info->self_comp = comp->self_comp;
546 debug_info->vpid_to_proc_dbg_info_src = g_hash_table_new_full(
547 g_int64_hash, g_int64_equal, (GDestroyNotify) g_free,
548 (GDestroyNotify) proc_debug_info_sources_destroy);
549 if (!debug_info->vpid_to_proc_dbg_info_src) {
550 goto error;
551 }
552
553 debug_info->comp = comp;
554 ret = debug_info_init(debug_info);
555 if (ret) {
556 goto error;
557 }
558
559 debug_info->input_trace = trace;
560 debug_info->fd_cache = fdc;
561
562 end:
563 return debug_info;
564 error:
565 g_free(debug_info);
566 return NULL;
567 }
568
569 static
570 void debug_info_destroy(struct debug_info *debug_info)
571 {
572 bt_logging_level log_level;
573 bt_self_component *self_comp;
574 bt_trace_remove_listener_status remove_listener_status;
575 if (!debug_info) {
576 goto end;
577 }
578
579 log_level = debug_info->log_level;
580 self_comp = debug_info->self_comp;
581
582 if (debug_info->vpid_to_proc_dbg_info_src) {
583 g_hash_table_destroy(debug_info->vpid_to_proc_dbg_info_src);
584 }
585
586 remove_listener_status = bt_trace_remove_destruction_listener(
587 debug_info->input_trace,
588 debug_info->destruction_listener_id);
589 if (remove_listener_status != BT_TRACE_REMOVE_LISTENER_STATUS_OK) {
590 BT_COMP_LOGE("Trace destruction listener removal failed.");
591 bt_current_thread_clear_error();
592 }
593
594 g_free(debug_info);
595 end:
596 return;
597 }
598
599 static
600 void handle_event_statedump_build_id(struct debug_info *debug_info,
601 const bt_event *event)
602 {
603 struct proc_debug_info_sources *proc_dbg_info_src;
604 uint64_t build_id_len, baddr;
605 uint8_t *build_id = NULL;
606 struct bin_info *bin;
607 int64_t vpid;
608 int ret = 0;
609
610 event_get_common_context_signed_integer_field_value(event,
611 VPID_FIELD_NAME, &vpid);
612 event_get_payload_unsigned_integer_field_value(event,
613 BADDR_FIELD_NAME, &baddr);
614
615 proc_dbg_info_src = proc_debug_info_sources_ht_get_entry(
616 debug_info->vpid_to_proc_dbg_info_src, vpid);
617 if (!proc_dbg_info_src) {
618 goto end;
619 }
620
621 bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info,
622 (gpointer) &baddr);
623 if (!bin) {
624 /*
625 * The build_id event comes after the bin has been
626 * created. If it isn't found, just ignore this event.
627 */
628 goto end;
629 }
630 ret = event_get_payload_build_id_length(event, BUILD_ID_FIELD_NAME,
631 &build_id_len);
632
633 build_id = g_new0(uint8_t, build_id_len);
634 if (!build_id) {
635 goto end;
636 }
637
638 ret = event_get_payload_build_id_value(event, BUILD_ID_FIELD_NAME,
639 build_id);
640 if (ret) {
641 goto end;
642 }
643
644 ret = bin_info_set_build_id(bin, build_id, build_id_len);
645 if (ret) {
646 goto end;
647 }
648
649 /*
650 * Reset the is_elf_only flag in case it had been set
651 * previously, because we might find separate debug info using
652 * the new build id information.
653 */
654 bin->is_elf_only = false;
655
656 end:
657 g_free(build_id);
658 return;
659 }
660
661 static
662 void handle_event_statedump_debug_link(struct debug_info *debug_info,
663 const bt_event *event)
664 {
665 struct proc_debug_info_sources *proc_dbg_info_src;
666 struct bin_info *bin = NULL;
667 int64_t vpid;
668 uint64_t baddr;
669 const char *filename = NULL;
670 uint32_t crc32;
671 uint64_t crc_field_value;
672
673 event_get_common_context_signed_integer_field_value(event,
674 VPID_FIELD_NAME, &vpid);
675
676 event_get_payload_unsigned_integer_field_value(event,
677 BADDR_FIELD_NAME, &baddr);
678
679 event_get_payload_unsigned_integer_field_value(event,
680 CRC32_FIELD_NAME, &crc_field_value);
681
682 crc32 = (uint32_t) crc_field_value;
683
684 event_get_payload_string_field_value(event,
685 FILENAME_FIELD_NAME, &filename);
686
687 proc_dbg_info_src = proc_debug_info_sources_ht_get_entry(
688 debug_info->vpid_to_proc_dbg_info_src, vpid);
689 if (!proc_dbg_info_src) {
690 goto end;
691 }
692
693 bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info,
694 (gpointer) &baddr);
695 if (!bin) {
696 /*
697 * The debug_link event comes after the bin has been
698 * created. If it isn't found, just ignore this event.
699 */
700 goto end;
701 }
702
703 bin_info_set_debug_link(bin, filename, crc32);
704
705 end:
706 return;
707 }
708
709 static
710 void handle_bin_info_event(struct debug_info *debug_info,
711 const bt_event *event, bool has_pic_field)
712 {
713 struct proc_debug_info_sources *proc_dbg_info_src;
714 struct bin_info *bin;
715 uint64_t baddr, memsz;
716 int64_t vpid;
717 const char *path;
718 gpointer key = NULL;
719 bool is_pic;
720
721 event_get_payload_unsigned_integer_field_value(event,
722 MEMSZ_FIELD_NAME, &memsz);
723 if (memsz == 0) {
724 /* Ignore VDSO. */
725 goto end;
726 }
727
728 event_get_payload_unsigned_integer_field_value(event,
729 BADDR_FIELD_NAME, &baddr);
730
731 /*
732 * This field is not produced by the dlopen event emitted before
733 * lttng-ust 2.9.
734 */
735 if (!event_has_payload_field(event, PATH_FIELD_NAME)) {
736 goto end;
737 }
738 event_get_payload_string_field_value(event, PATH_FIELD_NAME, &path);
739
740 if (has_pic_field) {
741 uint64_t is_pic_field_value;
742
743 event_get_payload_unsigned_integer_field_value(event,
744 IS_PIC_FIELD_NAME, &is_pic_field_value);
745 is_pic = is_pic_field_value == 1;
746 } else {
747 /*
748 * dlopen has no is_pic field, because the shared
749 * object is always PIC.
750 */
751 is_pic = true;
752 }
753
754 event_get_common_context_signed_integer_field_value(event,
755 VPID_FIELD_NAME, &vpid);
756
757 proc_dbg_info_src = proc_debug_info_sources_ht_get_entry(
758 debug_info->vpid_to_proc_dbg_info_src, vpid);
759 if (!proc_dbg_info_src) {
760 goto end;
761 }
762
763 key = g_new0(uint64_t, 1);
764 if (!key) {
765 goto end;
766 }
767
768 *((uint64_t *) key) = baddr;
769
770 bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, key);
771 if (bin) {
772 goto end;
773 }
774
775 bin = bin_info_create(debug_info->fd_cache, path, baddr, memsz, is_pic,
776 debug_info->comp->arg_debug_dir,
777 debug_info->comp->arg_target_prefix,
778 debug_info->log_level, debug_info->self_comp);
779 if (!bin) {
780 goto end;
781 }
782
783 g_hash_table_insert(proc_dbg_info_src->baddr_to_bin_info, key, bin);
784 /* Ownership passed to ht. */
785 key = NULL;
786
787 end:
788 g_free(key);
789 return;
790 }
791
792 static inline
793 void handle_event_statedump_bin_info(struct debug_info *debug_info,
794 const bt_event *event)
795 {
796 handle_bin_info_event(debug_info, event, true);
797 }
798
799 static inline
800 void handle_event_lib_load(struct debug_info *debug_info,
801 const bt_event *event)
802 {
803 handle_bin_info_event(debug_info, event, false);
804 }
805
806 static
807 void handle_event_lib_unload(struct debug_info *debug_info,
808 const bt_event *event)
809 {
810 gboolean ret;
811 struct proc_debug_info_sources *proc_dbg_info_src;
812 uint64_t baddr;
813 int64_t vpid;
814
815 event_get_payload_unsigned_integer_field_value(event, BADDR_FIELD_NAME,
816 &baddr);
817
818 event_get_common_context_signed_integer_field_value(event,
819 VPID_FIELD_NAME, &vpid);
820
821 proc_dbg_info_src = proc_debug_info_sources_ht_get_entry(
822 debug_info->vpid_to_proc_dbg_info_src, vpid);
823 if (!proc_dbg_info_src) {
824 /*
825 * It's an unload event for a library for which no load event
826 * was previously received.
827 */
828 goto end;
829 }
830
831 ret = g_hash_table_remove(proc_dbg_info_src->baddr_to_bin_info,
832 (gpointer) &baddr);
833 BT_ASSERT(ret);
834 end:
835 return;
836 }
837
838 static
839 void handle_event_statedump_start(struct debug_info *debug_info,
840 const bt_event *event)
841 {
842 struct proc_debug_info_sources *proc_dbg_info_src;
843 int64_t vpid;
844
845 event_get_common_context_signed_integer_field_value(
846 event, VPID_FIELD_NAME, &vpid);
847
848 proc_dbg_info_src = proc_debug_info_sources_ht_get_entry(
849 debug_info->vpid_to_proc_dbg_info_src, vpid);
850 if (!proc_dbg_info_src) {
851 goto end;
852 }
853
854 g_hash_table_remove_all(proc_dbg_info_src->baddr_to_bin_info);
855 g_hash_table_remove_all(proc_dbg_info_src->ip_to_debug_info_src);
856
857 end:
858 return;
859 }
860
861 void trace_debug_info_remove_func(const bt_trace *in_trace, void *data)
862 {
863 struct debug_info_msg_iter *debug_it = data;
864 if (debug_it->debug_info_map) {
865 gboolean ret;
866 ret = g_hash_table_remove(debug_it->debug_info_map,
867 (gpointer) in_trace);
868 BT_ASSERT(ret);
869 }
870 }
871
872 static
873 void handle_event_statedump(struct debug_info_msg_iter *debug_it,
874 const bt_event *event)
875 {
876 const bt_event_class *event_class;
877 const char *event_name;
878 GQuark q_event_name;
879 const bt_trace *trace;
880 struct debug_info *debug_info;
881
882 BT_ASSERT(debug_it);
883 BT_ASSERT(event);
884
885 event_class = bt_event_borrow_class_const(event);
886
887 event_name = bt_event_class_get_name(event_class);
888
889 trace = bt_stream_borrow_trace_const(
890 bt_event_borrow_stream_const(event));
891
892 debug_info = g_hash_table_lookup(debug_it->debug_info_map, trace);
893 if (!debug_info) {
894 bt_trace_add_listener_status add_listener_status;
895
896 debug_info = debug_info_create(debug_it->debug_info_component,
897 trace, &debug_it->fd_cache);
898 g_hash_table_insert(debug_it->debug_info_map, (gpointer) trace,
899 debug_info);
900 add_listener_status = bt_trace_add_destruction_listener(
901 trace, trace_debug_info_remove_func,
902 debug_it,
903 &debug_info->destruction_listener_id);
904 BT_ASSERT(add_listener_status == BT_TRACE_ADD_LISTENER_STATUS_OK);
905 }
906
907 q_event_name = g_quark_try_string(event_name);
908
909 if (q_event_name == debug_info->q_statedump_bin_info) {
910 /* State dump */
911 handle_event_statedump_bin_info(debug_info, event);
912 } else if (q_event_name == debug_info->q_dl_open ||
913 q_event_name == debug_info->q_lib_load) {
914 /*
915 * dl_open and lib_load events are both checked for since
916 * only dl_open was produced as of lttng-ust 2.8.
917 *
918 * lib_load, which is produced from lttng-ust 2.9+, is a lot
919 * more reliable since it will be emitted when other functions
920 * of the dlopen family are called (e.g. dlmopen) and when
921 * library are transitively loaded.
922 */
923 handle_event_lib_load(debug_info, event);
924 } else if (q_event_name == debug_info->q_statedump_start) {
925 /* Start state dump */
926 handle_event_statedump_start(debug_info, event);
927 } else if (q_event_name == debug_info->q_statedump_debug_link) {
928 /* Debug link info */
929 handle_event_statedump_debug_link(debug_info, event);
930 } else if (q_event_name == debug_info->q_statedump_build_id) {
931 /* Build ID info */
932 handle_event_statedump_build_id(debug_info, event);
933 } else if (q_event_name == debug_info-> q_lib_unload) {
934 handle_event_lib_unload(debug_info, event);
935 }
936
937 return;
938 }
939
940 static
941 void destroy_debug_info_comp(struct debug_info_component *debug_info)
942 {
943 if (!debug_info) {
944 return;
945 }
946
947 g_free(debug_info->arg_debug_dir);
948 g_free(debug_info->arg_debug_info_field_name);
949 g_free(debug_info->arg_target_prefix);
950 g_free(debug_info);
951 }
952
953 static
954 void fill_debug_info_bin_field(struct debug_info_source *dbg_info_src,
955 bool full_path, bt_field *curr_field,
956 bt_logging_level log_level, bt_self_component *self_comp)
957 {
958 bt_field_string_set_value_status set_status;
959 bt_field_string_append_status append_status;
960
961 BT_ASSERT(bt_field_get_class_type(curr_field) ==
962 BT_FIELD_CLASS_TYPE_STRING);
963
964 if (dbg_info_src) {
965 if (full_path) {
966 set_status = bt_field_string_set_value(curr_field,
967 dbg_info_src->bin_path);
968 } else {
969 set_status = bt_field_string_set_value(curr_field,
970 dbg_info_src->short_bin_path);
971 }
972 if (set_status != BT_FIELD_STRING_SET_VALUE_STATUS_OK) {
973 BT_COMP_LOGE("Cannot set path component of \"bin\" "
974 "curr_field field's value: str-fc-addr=%p",
975 curr_field);
976 bt_current_thread_clear_error();
977 }
978
979 append_status = bt_field_string_append(curr_field,
980 dbg_info_src->bin_loc);
981 if (append_status != BT_FIELD_STRING_APPEND_STATUS_OK) {
982 BT_COMP_LOGE("Cannot set bin location component of \"bin\" "
983 "curr_field field's value: str-fc-addr=%p",
984 curr_field);
985 bt_current_thread_clear_error();
986 }
987 } else {
988 set_status = bt_field_string_set_value(curr_field, "");
989 if (set_status != BT_FIELD_STRING_SET_VALUE_STATUS_OK) {
990 BT_COMP_LOGE("Cannot set \"bin\" curr_field field's value: "
991 "str-fc-addr=%p", curr_field);
992 bt_current_thread_clear_error();
993 }
994 }
995 }
996
997 static
998 void fill_debug_info_func_field(struct debug_info_source *dbg_info_src,
999 bt_field *curr_field, bt_logging_level log_level,
1000 bt_self_component *self_comp)
1001 {
1002 bt_field_string_set_value_status status;
1003
1004 BT_ASSERT(bt_field_get_class_type(curr_field) ==
1005 BT_FIELD_CLASS_TYPE_STRING);
1006 if (dbg_info_src && dbg_info_src->func) {
1007 status = bt_field_string_set_value(curr_field,
1008 dbg_info_src->func);
1009 } else {
1010 status = bt_field_string_set_value(curr_field, "");
1011 }
1012 if (status != BT_FIELD_STRING_SET_VALUE_STATUS_OK) {
1013 BT_COMP_LOGE("Cannot set \"func\" curr_field field's value: "
1014 "str-fc-addr=%p", curr_field);
1015 bt_current_thread_clear_error();
1016 }
1017 }
1018
1019 static
1020 void fill_debug_info_src_field(struct debug_info_source *dbg_info_src,
1021 bool full_path, bt_field *curr_field,
1022 bt_logging_level log_level,
1023 bt_self_component *self_comp)
1024 {
1025 bt_field_string_set_value_status set_status;
1026 bt_field_string_append_status append_status;
1027
1028 BT_ASSERT(bt_field_get_class_type(curr_field) ==
1029 BT_FIELD_CLASS_TYPE_STRING);
1030
1031 if (dbg_info_src && dbg_info_src->src_path) {
1032 if (full_path) {
1033 set_status = bt_field_string_set_value(curr_field,
1034 dbg_info_src->src_path);
1035 } else {
1036 set_status = bt_field_string_set_value(curr_field,
1037 dbg_info_src->short_src_path);
1038 }
1039 if (set_status != BT_FIELD_STRING_SET_VALUE_STATUS_OK) {
1040 BT_COMP_LOGE("Cannot set path component of \"src\" "
1041 "curr_field field's value: str-fc-addr=%p",
1042 curr_field);
1043 bt_current_thread_clear_error();
1044 }
1045
1046 append_status = bt_field_string_append(curr_field, ":");
1047 if (append_status != BT_FIELD_STRING_APPEND_STATUS_OK) {
1048 BT_COMP_LOGE("Cannot set colon component of \"src\" "
1049 "curr_field field's value: str-fc-addr=%p",
1050 curr_field);
1051 bt_current_thread_clear_error();
1052 }
1053
1054 append_status = bt_field_string_append(curr_field,
1055 dbg_info_src->line_no);
1056 if (append_status != BT_FIELD_STRING_APPEND_STATUS_OK) {
1057 BT_COMP_LOGE("Cannot set line number component of \"src\" "
1058 "curr_field field's value: str-fc-addr=%p",
1059 curr_field);
1060 bt_current_thread_clear_error();
1061 }
1062 } else {
1063 set_status = bt_field_string_set_value(curr_field, "");
1064 if (set_status != BT_FIELD_STRING_SET_VALUE_STATUS_OK) {
1065 BT_COMP_LOGE("Cannot set \"src\" curr_field field's value: "
1066 "str-fc-addr=%p", curr_field);
1067 bt_current_thread_clear_error();
1068 }
1069 }
1070 }
1071
1072 static
1073 void fill_debug_info_field_empty(bt_field *debug_info_field,
1074 bt_logging_level log_level, bt_self_component *self_comp)
1075 {
1076 bt_field_string_set_value_status status;
1077 bt_field *bin_field, *func_field, *src_field;
1078
1079 BT_ASSERT(bt_field_get_class_type(debug_info_field) ==
1080 BT_FIELD_CLASS_TYPE_STRUCTURE);
1081
1082 bin_field = bt_field_structure_borrow_member_field_by_name(
1083 debug_info_field, "bin");
1084 func_field = bt_field_structure_borrow_member_field_by_name(
1085 debug_info_field, "func");
1086 src_field = bt_field_structure_borrow_member_field_by_name(
1087 debug_info_field, "src");
1088
1089 BT_ASSERT(bt_field_get_class_type(bin_field) ==
1090 BT_FIELD_CLASS_TYPE_STRING);
1091 BT_ASSERT(bt_field_get_class_type(func_field) ==
1092 BT_FIELD_CLASS_TYPE_STRING);
1093 BT_ASSERT(bt_field_get_class_type(src_field) ==
1094 BT_FIELD_CLASS_TYPE_STRING);
1095
1096 status = bt_field_string_set_value(bin_field, "");
1097 if (status != BT_FIELD_STRING_SET_VALUE_STATUS_OK) {
1098 BT_COMP_LOGE("Cannot set \"bin\" bin_field field's value: "
1099 "str-fc-addr=%p", bin_field);
1100 bt_current_thread_clear_error();
1101 }
1102
1103 status = bt_field_string_set_value(func_field, "");
1104 if (status != BT_FIELD_STRING_SET_VALUE_STATUS_OK) {
1105 BT_COMP_LOGE("Cannot set \"func\" func_field field's value: "
1106 "str-fc-addr=%p", func_field);
1107 bt_current_thread_clear_error();
1108 }
1109
1110 status = bt_field_string_set_value(src_field, "");
1111 if (status != BT_FIELD_STRING_SET_VALUE_STATUS_OK) {
1112 BT_COMP_LOGE("Cannot set \"src\" src_field field's value: "
1113 "str-fc-addr=%p", src_field);
1114 bt_current_thread_clear_error();
1115 }
1116 }
1117 static
1118 void fill_debug_info_field(struct debug_info *debug_info, int64_t vpid,
1119 uint64_t ip, bt_field *debug_info_field)
1120 {
1121 struct debug_info_source *dbg_info_src;
1122 const bt_field_class *debug_info_fc;
1123
1124 BT_ASSERT(bt_field_get_class_type(debug_info_field) ==
1125 BT_FIELD_CLASS_TYPE_STRUCTURE);
1126
1127 debug_info_fc = bt_field_borrow_class_const(debug_info_field);
1128
1129 BT_ASSERT(bt_field_class_structure_get_member_count(debug_info_fc) == 3);
1130
1131 dbg_info_src = debug_info_query(debug_info, vpid, ip);
1132
1133 fill_debug_info_bin_field(dbg_info_src,
1134 debug_info->comp->arg_full_path,
1135 bt_field_structure_borrow_member_field_by_name(
1136 debug_info_field, "bin"),
1137 debug_info->log_level, debug_info->self_comp);
1138 fill_debug_info_func_field(dbg_info_src,
1139 bt_field_structure_borrow_member_field_by_name(
1140 debug_info_field, "func"),
1141 debug_info->log_level, debug_info->self_comp);
1142 fill_debug_info_src_field(dbg_info_src,
1143 debug_info->comp->arg_full_path,
1144 bt_field_structure_borrow_member_field_by_name(
1145 debug_info_field, "src"),
1146 debug_info->log_level, debug_info->self_comp);
1147 }
1148
1149 static
1150 void fill_debug_info_event_if_needed(struct debug_info_msg_iter *debug_it,
1151 const bt_event *in_event, bt_event *out_event)
1152 {
1153 bt_field *out_common_ctx_field, *out_debug_info_field;
1154 const bt_field *vpid_field, *ip_field, *in_common_ctx_field;
1155 const bt_field_class *in_common_ctx_fc;
1156 struct debug_info *debug_info;
1157 uint64_t vpid;
1158 int64_t ip;
1159 gchar *debug_info_field_name =
1160 debug_it->debug_info_component->arg_debug_info_field_name;
1161 bt_logging_level log_level = debug_it->log_level;
1162 bt_self_component *self_comp = debug_it->self_comp;
1163
1164 in_common_ctx_field = bt_event_borrow_common_context_field_const(
1165 in_event);
1166 if (!in_common_ctx_field) {
1167 /*
1168 * There is no event common context so no need to add debug
1169 * info field.
1170 */
1171 goto end;
1172 }
1173
1174 in_common_ctx_fc = bt_field_borrow_class_const(in_common_ctx_field);
1175 if (!is_event_common_ctx_dbg_info_compatible(in_common_ctx_fc,
1176 debug_it->ir_maps->debug_info_field_class_name)) {
1177 /*
1178 * The input event common context does not have the necessary
1179 * fields to resolve debug information.
1180 */
1181 goto end;
1182 }
1183
1184 /* Borrow the debug-info field. */
1185 out_common_ctx_field = bt_event_borrow_common_context_field(out_event);
1186 if (!out_common_ctx_field) {
1187 goto end;
1188 }
1189
1190 out_debug_info_field = bt_field_structure_borrow_member_field_by_name(
1191 out_common_ctx_field, debug_info_field_name);
1192
1193 vpid_field = bt_field_structure_borrow_member_field_by_name_const(
1194 out_common_ctx_field, VPID_FIELD_NAME);
1195 ip_field = bt_field_structure_borrow_member_field_by_name_const(
1196 out_common_ctx_field, IP_FIELD_NAME);
1197
1198 vpid = bt_field_integer_signed_get_value(vpid_field);
1199 ip = bt_field_integer_unsigned_get_value(ip_field);
1200
1201 /*
1202 * Borrow the debug_info structure needed for the source
1203 * resolving.
1204 */
1205 debug_info = g_hash_table_lookup(debug_it->debug_info_map,
1206 bt_stream_borrow_trace_const(
1207 bt_event_borrow_stream_const(in_event)));
1208
1209 if (debug_info) {
1210 /*
1211 * Perform the debug-info resolving and set the event fields
1212 * accordingly.
1213 */
1214 fill_debug_info_field(debug_info, vpid, ip, out_debug_info_field);
1215 } else {
1216 BT_COMP_LOGD("No debug information for this trace. Setting debug "
1217 "info fields to empty strings.");
1218 fill_debug_info_field_empty(out_debug_info_field,
1219 log_level, self_comp);
1220 }
1221 end:
1222 return;
1223 }
1224
1225 static
1226 void update_event_statedump_if_needed(struct debug_info_msg_iter *debug_it,
1227 const bt_event *in_event)
1228 {
1229 const bt_field *event_common_ctx;
1230 const bt_field_class *event_common_ctx_fc;
1231 const bt_event_class *in_event_class = bt_event_borrow_class_const(in_event);
1232
1233 /*
1234 * If the event is an lttng_ust_statedump event AND has the right event
1235 * common context fields update the debug-info view for this process.
1236 */
1237 event_common_ctx = bt_event_borrow_common_context_field_const(in_event);
1238 if (!event_common_ctx) {
1239 goto end;
1240 }
1241
1242 event_common_ctx_fc = bt_field_borrow_class_const(event_common_ctx);
1243 if (is_event_common_ctx_dbg_info_compatible(event_common_ctx_fc,
1244 debug_it->ir_maps->debug_info_field_class_name)) {
1245 /* Checkout if it might be a one of lttng ust statedump events. */
1246 const char *in_event_name = bt_event_class_get_name(in_event_class);
1247 if (strncmp(in_event_name, LTTNG_UST_STATEDUMP_PREFIX,
1248 strlen(LTTNG_UST_STATEDUMP_PREFIX)) == 0) {
1249 /* Handle statedump events. */
1250 handle_event_statedump(debug_it, in_event);
1251 }
1252 }
1253 end:
1254 return;
1255 }
1256
1257 static
1258 bt_message *handle_event_message(struct debug_info_msg_iter *debug_it,
1259 const bt_message *in_message)
1260 {
1261 const bt_clock_snapshot *cs;
1262 const bt_clock_class *default_cc;
1263 const bt_packet *in_packet;
1264 const bt_stream *in_stream;
1265 const bt_stream *out_stream;
1266 bt_event_class *out_event_class;
1267 bt_packet *out_packet = NULL;
1268 bt_event *out_event;
1269 bt_logging_level log_level = debug_it->log_level;
1270 bt_self_component *self_comp = debug_it->self_comp;
1271
1272 bt_message *out_message = NULL;
1273
1274 /* Borrow the input event and its event class. */
1275 const bt_event *in_event =
1276 bt_message_event_borrow_event_const(in_message);
1277 const bt_event_class *in_event_class =
1278 bt_event_borrow_class_const(in_event);
1279
1280 update_event_statedump_if_needed(debug_it, in_event);
1281
1282 out_event_class = trace_ir_mapping_borrow_mapped_event_class(
1283 debug_it->ir_maps, in_event_class);
1284 if (!out_event_class) {
1285 out_event_class = trace_ir_mapping_create_new_mapped_event_class(
1286 debug_it->ir_maps, in_event_class);
1287 }
1288 BT_ASSERT(out_event_class);
1289
1290 /* Borrow the input stream. */
1291 in_stream = bt_event_borrow_stream_const(in_event);
1292 BT_ASSERT(in_stream);
1293 out_stream = trace_ir_mapping_borrow_mapped_stream(debug_it->ir_maps,
1294 in_stream);
1295 BT_ASSERT(in_stream);
1296
1297 /* Borrow the input and output packets. */
1298 in_packet = bt_event_borrow_packet_const(in_event);
1299 if (in_packet) {
1300 out_packet = trace_ir_mapping_borrow_mapped_packet(
1301 debug_it->ir_maps, in_packet);
1302 }
1303
1304 default_cc = bt_stream_class_borrow_default_clock_class_const(
1305 bt_event_class_borrow_stream_class_const(in_event_class));
1306 if (default_cc) {
1307 /* Borrow event clock snapshot. */
1308 cs = bt_message_event_borrow_default_clock_snapshot_const(
1309 in_message);
1310
1311 /* Create an output event message. */
1312 if (out_packet) {
1313 out_message =
1314 bt_message_event_create_with_packet_and_default_clock_snapshot(
1315 debug_it->input_iterator,
1316 out_event_class, out_packet,
1317 bt_clock_snapshot_get_value(cs));
1318 } else {
1319 out_message =
1320 bt_message_event_create_with_default_clock_snapshot(
1321 debug_it->input_iterator,
1322 out_event_class, out_stream,
1323 bt_clock_snapshot_get_value(cs));
1324 }
1325 } else {
1326 if (out_packet) {
1327 out_message = bt_message_event_create_with_packet(
1328 debug_it->input_iterator, out_event_class,
1329 out_packet);
1330 } else {
1331 out_message = bt_message_event_create(
1332 debug_it->input_iterator, out_event_class,
1333 out_stream);
1334 }
1335 }
1336
1337 if (!out_message) {
1338 BT_COMP_LOGE("Error creating output event message.");
1339 goto error;
1340 }
1341
1342 out_event = bt_message_event_borrow_event(out_message);
1343
1344 /* Copy the original fields to the output event. */
1345 copy_event_content(in_event, out_event, log_level, self_comp);
1346
1347 /*
1348 * Try to set the debug-info fields based on debug information that is
1349 * gathered so far.
1350 */
1351 fill_debug_info_event_if_needed(debug_it, in_event, out_event);
1352
1353 error:
1354 return out_message;
1355 }
1356
1357 static
1358 bt_message *handle_stream_begin_message(struct debug_info_msg_iter *debug_it,
1359 const bt_message *in_message)
1360 {
1361 const bt_stream *in_stream;
1362 bt_message *out_message;
1363 bt_stream *out_stream;
1364 bt_logging_level log_level = debug_it->log_level;
1365 bt_self_component *self_comp = debug_it->self_comp;
1366
1367 in_stream = bt_message_stream_beginning_borrow_stream_const(in_message);
1368 BT_ASSERT(in_stream);
1369
1370 /* Create a duplicated output stream. */
1371 out_stream = trace_ir_mapping_create_new_mapped_stream(
1372 debug_it->ir_maps, in_stream);
1373 if (!out_stream) {
1374 out_message = NULL;
1375 goto error;
1376 }
1377
1378 /* Create an output stream beginning message. */
1379 out_message = bt_message_stream_beginning_create(
1380 debug_it->input_iterator, out_stream);
1381 if (!out_message) {
1382 BT_COMP_LOGE("Error creating output stream beginning message: "
1383 "out-s-addr=%p", out_stream);
1384 }
1385 error:
1386 return out_message;
1387 }
1388
1389 static
1390 bt_message *handle_stream_end_message(struct debug_info_msg_iter *debug_it,
1391 const bt_message *in_message)
1392 {
1393 const bt_stream *in_stream;
1394 bt_message *out_message = NULL;
1395 bt_stream *out_stream;
1396 bt_logging_level log_level = debug_it->log_level;
1397 bt_self_component *self_comp = debug_it->self_comp;
1398
1399 in_stream = bt_message_stream_end_borrow_stream_const(in_message);
1400 BT_ASSERT(in_stream);
1401
1402 out_stream = trace_ir_mapping_borrow_mapped_stream(
1403 debug_it->ir_maps, in_stream);
1404 BT_ASSERT(out_stream);
1405
1406 /* Create an output stream end message. */
1407 out_message = bt_message_stream_end_create(debug_it->input_iterator,
1408 out_stream);
1409 if (!out_message) {
1410 BT_COMP_LOGE("Error creating output stream end message: out-s-addr=%p",
1411 out_stream);
1412 goto end;
1413 }
1414
1415 /* Remove stream from trace mapping hashtable. */
1416 trace_ir_mapping_remove_mapped_stream(debug_it->ir_maps, in_stream);
1417
1418 end:
1419 return out_message;
1420 }
1421
1422 static
1423 bt_message *handle_packet_begin_message(struct debug_info_msg_iter *debug_it,
1424 const bt_message *in_message)
1425 {
1426 bool has_default_clock_snapshot;
1427 const bt_clock_snapshot *cs;
1428 bt_message *out_message = NULL;
1429 bt_packet *out_packet;
1430 bt_logging_level log_level = debug_it->log_level;
1431 bt_self_component *self_comp = debug_it->self_comp;
1432
1433 const bt_packet *in_packet =
1434 bt_message_packet_beginning_borrow_packet_const(in_message);
1435 BT_ASSERT(in_packet);
1436
1437 /* This packet should not be already mapped. */
1438 BT_ASSERT(!trace_ir_mapping_borrow_mapped_packet(
1439 debug_it->ir_maps, in_packet));
1440
1441 out_packet = trace_ir_mapping_create_new_mapped_packet(debug_it->ir_maps,
1442 in_packet);
1443
1444 BT_ASSERT(out_packet);
1445
1446 has_default_clock_snapshot =
1447 bt_stream_class_packets_have_beginning_default_clock_snapshot(
1448 bt_stream_borrow_class_const(
1449 bt_packet_borrow_stream_const(in_packet)));
1450 if (has_default_clock_snapshot) {
1451 /* Borrow clock snapshot. */
1452 cs = bt_message_packet_beginning_borrow_default_clock_snapshot_const(
1453 in_message);
1454
1455 /* Create an output packet beginning message. */
1456 out_message = bt_message_packet_beginning_create_with_default_clock_snapshot(
1457 debug_it->input_iterator, out_packet,
1458 bt_clock_snapshot_get_value(cs));
1459 } else {
1460 out_message = bt_message_packet_beginning_create(
1461 debug_it->input_iterator, out_packet);
1462 }
1463 if (!out_message) {
1464 BT_COMP_LOGE("Error creating output packet beginning message: "
1465 "out-p-addr=%p", out_packet);
1466 }
1467
1468 return out_message;
1469 }
1470
1471 static
1472 bt_message *handle_packet_end_message(struct debug_info_msg_iter *debug_it,
1473 const bt_message *in_message)
1474 {
1475 bool has_default_clock_snapshot;
1476 const bt_clock_snapshot *cs;
1477 const bt_packet *in_packet;
1478 bt_message *out_message = NULL;
1479 bt_packet *out_packet;
1480 bt_logging_level log_level = debug_it->log_level;
1481 bt_self_component *self_comp = debug_it->self_comp;
1482
1483 in_packet = bt_message_packet_end_borrow_packet_const(in_message);
1484 BT_ASSERT(in_packet);
1485
1486 out_packet = trace_ir_mapping_borrow_mapped_packet(debug_it->ir_maps, in_packet);
1487 BT_ASSERT(out_packet);
1488
1489 has_default_clock_snapshot =
1490 bt_stream_class_packets_have_end_default_clock_snapshot(
1491 bt_stream_borrow_class_const(
1492 bt_packet_borrow_stream_const(in_packet)));
1493 if (has_default_clock_snapshot) {
1494 /* Borrow clock snapshot. */
1495 cs = bt_message_packet_end_borrow_default_clock_snapshot_const(
1496 in_message);
1497
1498 /* Create an outpute packet end message. */
1499 out_message = bt_message_packet_end_create_with_default_clock_snapshot(
1500 debug_it->input_iterator, out_packet,
1501 bt_clock_snapshot_get_value(cs));
1502 } else {
1503 out_message = bt_message_packet_end_create(
1504 debug_it->input_iterator, out_packet);
1505 }
1506
1507 if (!out_message) {
1508 BT_COMP_LOGE("Error creating output packet end message: "
1509 "out-p-addr=%p", out_packet);
1510 goto end;
1511 }
1512
1513 /* Remove packet from data mapping hashtable. */
1514 trace_ir_mapping_remove_mapped_packet(debug_it->ir_maps, in_packet);
1515
1516 end:
1517 return out_message;
1518 }
1519
1520 static
1521 bt_message *handle_msg_iterator_inactivity(struct debug_info_msg_iter *debug_it,
1522 const bt_message *in_message)
1523 {
1524 /*
1525 * This message type can be forwarded directly because it does
1526 * not refer to any objects in the trace class.
1527 */
1528 bt_message_get_ref(in_message);
1529 return (bt_message*) in_message;
1530 }
1531
1532 static
1533 bt_message *handle_discarded_events_message(struct debug_info_msg_iter *debug_it,
1534 const bt_message *in_message)
1535 {
1536 const bt_clock_snapshot *begin_cs, *end_cs;
1537 const bt_stream *in_stream;
1538 bool has_default_clock_snapshots;
1539 uint64_t discarded_events, begin_cs_value, end_cs_value;
1540 bt_property_availability prop_avail;
1541 bt_message *out_message = NULL;
1542 bt_stream *out_stream;
1543 bt_logging_level log_level = debug_it->log_level;
1544 bt_self_component *self_comp = debug_it->self_comp;
1545
1546 in_stream = bt_message_discarded_events_borrow_stream_const(
1547 in_message);
1548 BT_ASSERT(in_stream);
1549
1550 out_stream = trace_ir_mapping_borrow_mapped_stream(
1551 debug_it->ir_maps, in_stream);
1552 BT_ASSERT(out_stream);
1553
1554 has_default_clock_snapshots =
1555 bt_stream_class_discarded_events_have_default_clock_snapshots(
1556 bt_stream_borrow_class_const(in_stream));
1557 if (has_default_clock_snapshots) {
1558 begin_cs =
1559 bt_message_discarded_events_borrow_beginning_default_clock_snapshot_const(
1560 in_message);
1561 end_cs =
1562 bt_message_discarded_events_borrow_end_default_clock_snapshot_const(
1563 in_message);
1564
1565 begin_cs_value = bt_clock_snapshot_get_value(begin_cs);
1566 end_cs_value = bt_clock_snapshot_get_value(end_cs);
1567
1568 out_message =
1569 bt_message_discarded_events_create_with_default_clock_snapshots(
1570 debug_it->input_iterator, out_stream,
1571 begin_cs_value, end_cs_value);
1572 } else {
1573 out_message = bt_message_discarded_events_create(
1574 debug_it->input_iterator, out_stream);
1575 }
1576 if (!out_message) {
1577 BT_COMP_LOGE("Error creating output discarded events message: "
1578 "out-s-addr=%p", out_stream);
1579 goto error;
1580 }
1581
1582 prop_avail = bt_message_discarded_events_get_count(in_message,
1583 &discarded_events);
1584
1585 if (prop_avail == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE) {
1586 bt_message_discarded_events_set_count(out_message,
1587 discarded_events);
1588 }
1589
1590 error:
1591 return out_message;
1592 }
1593
1594 static
1595 bt_message *handle_discarded_packets_message(struct debug_info_msg_iter *debug_it,
1596 const bt_message *in_message)
1597 {
1598 const bt_clock_snapshot *begin_cs, *end_cs;
1599 bool has_default_clock_snapshots;
1600 const bt_stream *in_stream;
1601 uint64_t discarded_packets, begin_cs_value, end_cs_value;
1602 bt_property_availability prop_avail;
1603 bt_message *out_message = NULL;
1604 bt_stream *out_stream;
1605 bt_logging_level log_level = debug_it->log_level;
1606 bt_self_component *self_comp = debug_it->self_comp;
1607
1608 in_stream = bt_message_discarded_packets_borrow_stream_const(
1609 in_message);
1610 BT_ASSERT(in_stream);
1611
1612 out_stream = trace_ir_mapping_borrow_mapped_stream(
1613 debug_it->ir_maps, in_stream);
1614 BT_ASSERT(out_stream);
1615
1616 has_default_clock_snapshots =
1617 bt_stream_class_discarded_packets_have_default_clock_snapshots(
1618 bt_stream_borrow_class_const(in_stream));
1619 if (has_default_clock_snapshots) {
1620 begin_cs =
1621 bt_message_discarded_packets_borrow_beginning_default_clock_snapshot_const(
1622 in_message);
1623
1624 end_cs =
1625 bt_message_discarded_packets_borrow_end_default_clock_snapshot_const(
1626 in_message);
1627
1628 begin_cs_value = bt_clock_snapshot_get_value(begin_cs);
1629 end_cs_value = bt_clock_snapshot_get_value(end_cs);
1630
1631 out_message = bt_message_discarded_packets_create_with_default_clock_snapshots(
1632 debug_it->input_iterator, out_stream,
1633 begin_cs_value, end_cs_value);
1634 } else {
1635 out_message = bt_message_discarded_packets_create(
1636 debug_it->input_iterator, out_stream);
1637 }
1638 if (!out_message) {
1639 BT_COMP_LOGE("Error creating output discarded packet message: "
1640 "out-s-addr=%p", out_stream);
1641 goto error;
1642 }
1643
1644 prop_avail = bt_message_discarded_packets_get_count(in_message,
1645 &discarded_packets);
1646 if (prop_avail == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE) {
1647 bt_message_discarded_packets_set_count(out_message,
1648 discarded_packets);
1649 }
1650
1651 error:
1652 return out_message;
1653 }
1654
1655 static
1656 const bt_message *handle_message(struct debug_info_msg_iter *debug_it,
1657 const bt_message *in_message)
1658 {
1659 bt_message *out_message = NULL;
1660
1661 switch (bt_message_get_type(in_message)) {
1662 case BT_MESSAGE_TYPE_EVENT:
1663 out_message = handle_event_message(debug_it,
1664 in_message);
1665 break;
1666 case BT_MESSAGE_TYPE_PACKET_BEGINNING:
1667 out_message = handle_packet_begin_message(debug_it,
1668 in_message);
1669 break;
1670 case BT_MESSAGE_TYPE_PACKET_END:
1671 out_message = handle_packet_end_message(debug_it,
1672 in_message);
1673 break;
1674 case BT_MESSAGE_TYPE_STREAM_BEGINNING:
1675 out_message = handle_stream_begin_message(debug_it,
1676 in_message);
1677 break;
1678 case BT_MESSAGE_TYPE_STREAM_END:
1679 out_message = handle_stream_end_message(debug_it,
1680 in_message);
1681 break;
1682 case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY:
1683 out_message = handle_msg_iterator_inactivity(debug_it,
1684 in_message);
1685 break;
1686 case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
1687 out_message = handle_discarded_events_message(debug_it,
1688 in_message);
1689 break;
1690 case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
1691 out_message = handle_discarded_packets_message(debug_it,
1692 in_message);
1693 break;
1694 default:
1695 abort();
1696 break;
1697 }
1698
1699 return out_message;
1700 }
1701
1702 static
1703 int init_from_params(struct debug_info_component *debug_info_component,
1704 const bt_value *params)
1705 {
1706 const bt_value *value = NULL;
1707 int ret = 0;
1708
1709 BT_ASSERT(params);
1710
1711 value = bt_value_map_borrow_entry_value_const(params,
1712 "debug-info-field-name");
1713 if (value) {
1714 debug_info_component->arg_debug_info_field_name =
1715 g_strdup(bt_value_string_get(value));
1716 } else {
1717 debug_info_component->arg_debug_info_field_name =
1718 g_strdup(DEFAULT_DEBUG_INFO_FIELD_NAME);
1719 }
1720
1721 value = bt_value_map_borrow_entry_value_const(params, "debug-info-dir");
1722 if (value) {
1723 debug_info_component->arg_debug_dir =
1724 g_strdup(bt_value_string_get(value));
1725 } else {
1726 debug_info_component->arg_debug_dir = NULL;
1727 }
1728
1729
1730 value = bt_value_map_borrow_entry_value_const(params, "target-prefix");
1731 if (value) {
1732 debug_info_component->arg_target_prefix =
1733 g_strdup(bt_value_string_get(value));
1734 } else {
1735 debug_info_component->arg_target_prefix = NULL;
1736 }
1737
1738 value = bt_value_map_borrow_entry_value_const(params, "full-path");
1739 if (value) {
1740 debug_info_component->arg_full_path = bt_value_bool_get(value);
1741 } else {
1742 debug_info_component->arg_full_path = BT_FALSE;
1743 }
1744
1745 return ret;
1746 }
1747
1748 BT_HIDDEN
1749 bt_component_class_init_method_status debug_info_comp_init(
1750 bt_self_component_filter *self_comp_flt,
1751 const bt_value *params, __attribute__((unused)) void *init_method_data)
1752 {
1753 int ret;
1754 struct debug_info_component *debug_info_comp;
1755 bt_component_class_init_method_status status =
1756 BT_COMPONENT_CLASS_INIT_METHOD_STATUS_OK;
1757 bt_self_component_add_port_status add_port_status;
1758 bt_self_component *self_comp =
1759 bt_self_component_filter_as_self_component(self_comp_flt);
1760 bt_logging_level log_level = bt_component_get_logging_level(
1761 bt_self_component_as_component(self_comp));
1762
1763
1764 BT_COMP_LOGI("Initializing debug_info component: "
1765 "comp-addr=%p, params-addr=%p", self_comp, params);
1766
1767 debug_info_comp = g_new0(struct debug_info_component, 1);
1768 if (!debug_info_comp) {
1769 BT_COMP_LOGE_STR("Failed to allocate one debug_info component.");
1770 goto error;
1771 }
1772
1773 debug_info_comp->log_level = log_level;
1774 debug_info_comp->self_comp = self_comp;
1775 bt_self_component_set_data(self_comp, debug_info_comp);
1776
1777 add_port_status = bt_self_component_filter_add_input_port(
1778 self_comp_flt, "in", NULL, NULL);
1779 switch (add_port_status) {
1780 case BT_SELF_COMPONENT_ADD_PORT_STATUS_ERROR:
1781 status = BT_COMPONENT_CLASS_INIT_METHOD_STATUS_ERROR;
1782 goto error;
1783 case BT_SELF_COMPONENT_ADD_PORT_STATUS_MEMORY_ERROR:
1784 status = BT_COMPONENT_CLASS_INIT_METHOD_STATUS_MEMORY_ERROR;
1785 goto error;
1786 default:
1787 break;
1788 }
1789
1790 add_port_status = bt_self_component_filter_add_output_port(
1791 self_comp_flt, "out", NULL, NULL);
1792 switch (add_port_status) {
1793 case BT_SELF_COMPONENT_ADD_PORT_STATUS_ERROR:
1794 status = BT_COMPONENT_CLASS_INIT_METHOD_STATUS_ERROR;
1795 goto error;
1796 case BT_SELF_COMPONENT_ADD_PORT_STATUS_MEMORY_ERROR:
1797 status = BT_COMPONENT_CLASS_INIT_METHOD_STATUS_MEMORY_ERROR;
1798 goto error;
1799 default:
1800 break;
1801 }
1802
1803 ret = init_from_params(debug_info_comp, params);
1804 if (ret) {
1805 BT_COMP_LOGE("Cannot configure debug_info component: "
1806 "debug_info-comp-addr=%p, params-addr=%p",
1807 debug_info_comp, params);
1808 goto error;
1809 }
1810
1811 goto end;
1812
1813 error:
1814 destroy_debug_info_comp(debug_info_comp);
1815 bt_self_component_set_data(self_comp, NULL);
1816
1817 if (status == BT_COMPONENT_CLASS_INIT_METHOD_STATUS_OK) {
1818 status = BT_COMPONENT_CLASS_INIT_METHOD_STATUS_ERROR;
1819 }
1820 end:
1821 return status;
1822 }
1823
1824 BT_HIDDEN
1825 void debug_info_comp_finalize(bt_self_component_filter *self_comp_flt)
1826 {
1827 struct debug_info_component *debug_info =
1828 bt_self_component_get_data(
1829 bt_self_component_filter_as_self_component(
1830 self_comp_flt));
1831 bt_logging_level log_level = debug_info->log_level;
1832 bt_self_component *self_comp = debug_info->self_comp;
1833
1834 BT_COMP_LOGI("Finalizing debug_info self_component: comp-addr=%p",
1835 self_comp);
1836
1837 destroy_debug_info_comp(debug_info);
1838 }
1839
1840 BT_HIDDEN
1841 bt_component_class_message_iterator_next_method_status debug_info_msg_iter_next(
1842 bt_self_message_iterator *self_msg_iter,
1843 const bt_message_array_const msgs, uint64_t capacity,
1844 uint64_t *count)
1845 {
1846 bt_self_component_port_input_message_iterator *upstream_iterator = NULL;
1847 bt_message_iterator_next_status upstream_iterator_ret_status;
1848 struct debug_info_msg_iter *debug_info_msg_iter;
1849 struct debug_info_component *debug_info = NULL;
1850 bt_component_class_message_iterator_next_method_status status;
1851 bt_self_component *self_comp = NULL;
1852 bt_message_array_const input_msgs;
1853 const bt_message *out_message;
1854 uint64_t curr_msg_idx, i;
1855
1856 status = BT_COMPONENT_CLASS_MESSAGE_ITERATOR_NEXT_METHOD_STATUS_OK;
1857
1858 self_comp = bt_self_message_iterator_borrow_component(self_msg_iter);
1859 BT_ASSERT(self_comp);
1860
1861 debug_info = bt_self_component_get_data(self_comp);
1862 BT_ASSERT(debug_info);
1863
1864 debug_info_msg_iter = bt_self_message_iterator_get_data(self_msg_iter);
1865 BT_ASSERT(debug_info_msg_iter);
1866
1867 upstream_iterator = debug_info_msg_iter->msg_iter;
1868 BT_ASSERT(upstream_iterator);
1869
1870 upstream_iterator_ret_status =
1871 bt_self_component_port_input_message_iterator_next(
1872 upstream_iterator, &input_msgs, count);
1873 if (upstream_iterator_ret_status !=
1874 BT_MESSAGE_ITERATOR_NEXT_STATUS_OK) {
1875 /*
1876 * No messages were returned. Not necessarily an error.
1877 * Convert the upstream message iterator status to a
1878 * self status.
1879 */
1880 status = (int) upstream_iterator_ret_status;
1881 goto end;
1882 }
1883
1884 /*
1885 * There should never be more received messages than the capacity we
1886 * provided.
1887 */
1888 BT_ASSERT(*count <= capacity);
1889
1890 for (curr_msg_idx = 0; curr_msg_idx < *count; curr_msg_idx++) {
1891 out_message = handle_message(debug_info_msg_iter,
1892 input_msgs[curr_msg_idx]);
1893 if (!out_message) {
1894 goto handle_msg_error;
1895 }
1896
1897 msgs[curr_msg_idx] = out_message;
1898 /*
1899 * Drop our reference of the input message as we are done with
1900 * it and created a output copy.
1901 */
1902 bt_message_put_ref(input_msgs[curr_msg_idx]);
1903 }
1904
1905 goto end;
1906
1907 handle_msg_error:
1908 /*
1909 * Drop references of all the output messages created before the
1910 * failure.
1911 */
1912 for (i = 0; i < curr_msg_idx; i++) {
1913 bt_message_put_ref(msgs[i]);
1914 }
1915
1916 /*
1917 * Drop references of all the input messages not dropped before the
1918 * failure.
1919 */
1920 for (i = curr_msg_idx; i < *count; i++) {
1921 bt_message_put_ref(input_msgs[i]);
1922 }
1923
1924 status = BT_COMPONENT_CLASS_MESSAGE_ITERATOR_NEXT_METHOD_STATUS_MEMORY_ERROR;
1925
1926 end:
1927 return status;
1928 }
1929
1930 static
1931 void debug_info_msg_iter_destroy(struct debug_info_msg_iter *debug_info_msg_iter)
1932 {
1933 if (!debug_info_msg_iter) {
1934 goto end;
1935 }
1936
1937 if (debug_info_msg_iter->msg_iter) {
1938 bt_self_component_port_input_message_iterator_put_ref(
1939 debug_info_msg_iter->msg_iter);
1940 }
1941
1942 if (debug_info_msg_iter->ir_maps) {
1943 trace_ir_maps_destroy(debug_info_msg_iter->ir_maps);
1944 }
1945
1946 if (debug_info_msg_iter->debug_info_map) {
1947 g_hash_table_destroy(debug_info_msg_iter->debug_info_map);
1948 }
1949
1950 bt_fd_cache_fini(&debug_info_msg_iter->fd_cache);
1951 g_free(debug_info_msg_iter);
1952
1953 end:
1954 return;
1955 }
1956
1957 BT_HIDDEN
1958 bt_component_class_message_iterator_init_method_status debug_info_msg_iter_init(
1959 bt_self_message_iterator *self_msg_iter,
1960 bt_self_component_filter *self_comp_flt,
1961 bt_self_component_port_output *self_port)
1962 {
1963 bt_component_class_message_iterator_init_method_status status;
1964 bt_self_component_port_input_message_iterator_create_from_message_iterator_status
1965 msg_iter_status;
1966 struct bt_self_component_port_input *input_port = NULL;
1967 bt_self_component_port_input_message_iterator *upstream_iterator = NULL;
1968 struct debug_info_msg_iter *debug_info_msg_iter = NULL;
1969 gchar *debug_info_field_name;
1970 int ret;
1971 bt_self_component *self_comp =
1972 bt_self_component_filter_as_self_component(self_comp_flt);
1973 bt_logging_level log_level = bt_component_get_logging_level(
1974 bt_self_component_as_component(self_comp));
1975
1976 /* Borrow the upstream input port. */
1977 input_port = bt_self_component_filter_borrow_input_port_by_name(
1978 self_comp_flt, "in");
1979 if (!input_port) {
1980 status = BT_COMPONENT_CLASS_MESSAGE_ITERATOR_INIT_METHOD_STATUS_ERROR;
1981 goto error;
1982 }
1983
1984 debug_info_msg_iter = g_new0(struct debug_info_msg_iter, 1);
1985 if (!debug_info_msg_iter) {
1986 status = BT_COMPONENT_CLASS_MESSAGE_ITERATOR_INIT_METHOD_STATUS_MEMORY_ERROR;
1987 goto error;
1988 }
1989
1990 debug_info_msg_iter->log_level = log_level;
1991 debug_info_msg_iter->self_comp = self_comp;
1992
1993 /* Create an iterator on the upstream component. */
1994 msg_iter_status = bt_self_component_port_input_message_iterator_create_from_message_iterator(
1995 self_msg_iter, input_port, &upstream_iterator);
1996 if (msg_iter_status != BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_CREATE_FROM_MESSAGE_ITERATOR_STATUS_OK) {
1997 status = (int) msg_iter_status;
1998 goto error;
1999 }
2000
2001 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_MOVE_REF(
2002 debug_info_msg_iter->msg_iter, upstream_iterator);
2003
2004 /* Create hashtable that will contain debug info mapping. */
2005 debug_info_msg_iter->debug_info_map = g_hash_table_new_full(
2006 g_direct_hash, g_direct_equal, (GDestroyNotify) NULL,
2007 (GDestroyNotify) debug_info_destroy);
2008 if (!debug_info_msg_iter->debug_info_map) {
2009 status = BT_COMPONENT_CLASS_MESSAGE_ITERATOR_INIT_METHOD_STATUS_MEMORY_ERROR;
2010 goto error;
2011 }
2012
2013 debug_info_msg_iter->debug_info_component =
2014 bt_self_component_get_data(self_comp);
2015
2016 debug_info_field_name =
2017 debug_info_msg_iter->debug_info_component->arg_debug_info_field_name;
2018
2019 debug_info_msg_iter->ir_maps = trace_ir_maps_create(self_comp,
2020 debug_info_field_name, log_level);
2021 if (!debug_info_msg_iter->ir_maps) {
2022 status = BT_COMPONENT_CLASS_MESSAGE_ITERATOR_INIT_METHOD_STATUS_MEMORY_ERROR;
2023 goto error;
2024 }
2025
2026 ret = bt_fd_cache_init(&debug_info_msg_iter->fd_cache, log_level);
2027 if (ret) {
2028 status = BT_COMPONENT_CLASS_MESSAGE_ITERATOR_INIT_METHOD_STATUS_MEMORY_ERROR;
2029 goto error;
2030 }
2031
2032 bt_self_message_iterator_set_data(self_msg_iter, debug_info_msg_iter);
2033 debug_info_msg_iter->input_iterator = self_msg_iter;
2034
2035 status = BT_COMPONENT_CLASS_MESSAGE_ITERATOR_INIT_METHOD_STATUS_OK;
2036 goto end;
2037
2038 error:
2039 debug_info_msg_iter_destroy(debug_info_msg_iter);
2040
2041 end:
2042 return status;
2043 }
2044
2045 BT_HIDDEN
2046 bt_component_class_message_iterator_can_seek_beginning_method_status
2047 debug_info_msg_iter_can_seek_beginning(
2048 bt_self_message_iterator *self_msg_iter, bt_bool *can_seek)
2049 {
2050 struct debug_info_msg_iter *debug_info_msg_iter =
2051 bt_self_message_iterator_get_data(self_msg_iter);
2052 BT_ASSERT(debug_info_msg_iter);
2053
2054 return (int) bt_self_component_port_input_message_iterator_can_seek_beginning(
2055 debug_info_msg_iter->msg_iter, can_seek);
2056 }
2057
2058 BT_HIDDEN
2059 bt_component_class_message_iterator_seek_beginning_method_status debug_info_msg_iter_seek_beginning(
2060 bt_self_message_iterator *self_msg_iter)
2061 {
2062 struct debug_info_msg_iter *debug_info_msg_iter =
2063 bt_self_message_iterator_get_data(self_msg_iter);
2064 bt_component_class_message_iterator_seek_beginning_method_status status =
2065 BT_COMPONENT_CLASS_MESSAGE_ITERATOR_SEEK_BEGINNING_METHOD_STATUS_OK;
2066 bt_message_iterator_seek_beginning_status seek_beg_status;
2067
2068 BT_ASSERT(debug_info_msg_iter);
2069
2070 /* Ask the upstream component to seek to the beginning. */
2071 seek_beg_status = bt_self_component_port_input_message_iterator_seek_beginning(
2072 debug_info_msg_iter->msg_iter);
2073 if (seek_beg_status != BT_MESSAGE_ITERATOR_SEEK_BEGINNING_STATUS_OK) {
2074 status = (int) seek_beg_status;
2075 goto end;
2076 }
2077
2078 /* Clear this iterator data. */
2079 trace_ir_maps_clear(debug_info_msg_iter->ir_maps);
2080 g_hash_table_remove_all(debug_info_msg_iter->debug_info_map);
2081
2082 end:
2083 return status;
2084 }
2085
2086 BT_HIDDEN
2087 void debug_info_msg_iter_finalize(bt_self_message_iterator *it)
2088 {
2089 struct debug_info_msg_iter *debug_info_msg_iter;
2090
2091 debug_info_msg_iter = bt_self_message_iterator_get_data(it);
2092 BT_ASSERT(debug_info_msg_iter);
2093
2094 debug_info_msg_iter_destroy(debug_info_msg_iter);
2095 }
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