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4f45f9bb JD |
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 | * | |
9 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
10 | * of this software and associated documentation files (the "Software"), to deal | |
11 | * in the Software without restriction, including without limitation the rights | |
12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
13 | * copies of the Software, and to permit persons to whom the Software is | |
14 | * furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included in | |
17 | * all copies or substantial portions of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
25 | * SOFTWARE. | |
26 | */ | |
27 | ||
28 | #include <assert.h> | |
29 | #include <glib.h> | |
30 | #include "debug-info.h" | |
31 | #include "bin-info.h" | |
32 | #include "utils.h" | |
33 | #include "copy.h" | |
34 | ||
35 | struct proc_debug_info_sources { | |
36 | /* | |
37 | * Hash table: base address (pointer to uint64_t) to bin info; owned by | |
38 | * proc_debug_info_sources. | |
39 | */ | |
40 | GHashTable *baddr_to_bin_info; | |
41 | ||
42 | /* | |
43 | * Hash table: IP (pointer to uint64_t) to (struct debug_info_source *); | |
44 | * owned by proc_debug_info_sources. | |
45 | */ | |
46 | GHashTable *ip_to_debug_info_src; | |
47 | }; | |
48 | ||
49 | struct debug_info { | |
9d325e17 PP |
50 | struct debug_info_component *comp; |
51 | ||
4f45f9bb JD |
52 | /* |
53 | * Hash table of VPIDs (pointer to int64_t) to | |
54 | * (struct ctf_proc_debug_infos*); owned by debug_info. | |
55 | */ | |
56 | GHashTable *vpid_to_proc_dbg_info_src; | |
57 | GQuark q_statedump_bin_info; | |
58 | GQuark q_statedump_debug_link; | |
59 | GQuark q_statedump_build_id; | |
60 | GQuark q_statedump_start; | |
61 | GQuark q_dl_open; | |
62 | GQuark q_lib_load; | |
63 | GQuark q_lib_unload; | |
64 | }; | |
65 | ||
66 | static | |
67 | int debug_info_init(struct debug_info *info) | |
68 | { | |
69 | info->q_statedump_bin_info = g_quark_from_string( | |
70 | "lttng_ust_statedump:bin_info"); | |
71 | info->q_statedump_debug_link = g_quark_from_string( | |
72 | "lttng_ust_statedump:debug_link)"); | |
73 | info->q_statedump_build_id = g_quark_from_string( | |
74 | "lttng_ust_statedump:build_id"); | |
75 | info->q_statedump_start = g_quark_from_string( | |
76 | "lttng_ust_statedump:start"); | |
77 | info->q_dl_open = g_quark_from_string("lttng_ust_dl:dlopen"); | |
78 | info->q_lib_load = g_quark_from_string("lttng_ust_lib:load"); | |
79 | info->q_lib_unload = g_quark_from_string("lttng_ust_lib:unload"); | |
80 | ||
81 | return bin_info_init(); | |
82 | } | |
83 | ||
84 | static | |
85 | void debug_info_source_destroy(struct debug_info_source *debug_info_src) | |
86 | { | |
87 | if (!debug_info_src) { | |
88 | return; | |
89 | } | |
90 | ||
91 | free(debug_info_src->func); | |
92 | free(debug_info_src->src_path); | |
93 | free(debug_info_src->bin_path); | |
94 | free(debug_info_src->bin_loc); | |
95 | g_free(debug_info_src); | |
96 | } | |
97 | ||
98 | static | |
99 | struct debug_info_source *debug_info_source_create_from_bin(struct bin_info *bin, | |
100 | uint64_t ip) | |
101 | { | |
102 | int ret; | |
103 | struct debug_info_source *debug_info_src = NULL; | |
104 | struct source_location *src_loc = NULL; | |
105 | ||
106 | debug_info_src = g_new0(struct debug_info_source, 1); | |
107 | ||
108 | if (!debug_info_src) { | |
109 | goto end; | |
110 | } | |
111 | ||
112 | /* Lookup function name */ | |
113 | ret = bin_info_lookup_function_name(bin, ip, &debug_info_src->func); | |
114 | if (ret) { | |
115 | goto error; | |
116 | } | |
117 | ||
118 | /* Can't retrieve src_loc from ELF, or could not find binary, skip. */ | |
119 | if (!bin->is_elf_only || !debug_info_src->func) { | |
120 | /* Lookup source location */ | |
121 | ret = bin_info_lookup_source_location(bin, ip, &src_loc); | |
122 | printf_verbose("Failed to lookup source location (err: %i)\n", ret); | |
123 | } | |
124 | ||
125 | if (src_loc) { | |
126 | debug_info_src->line_no = src_loc->line_no; | |
127 | ||
128 | if (src_loc->filename) { | |
129 | debug_info_src->src_path = strdup(src_loc->filename); | |
130 | if (!debug_info_src->src_path) { | |
131 | goto error; | |
132 | } | |
133 | ||
134 | debug_info_src->short_src_path = get_filename_from_path( | |
135 | debug_info_src->src_path); | |
136 | } | |
137 | ||
138 | source_location_destroy(src_loc); | |
139 | } | |
140 | ||
141 | if (bin->elf_path) { | |
142 | debug_info_src->bin_path = strdup(bin->elf_path); | |
143 | if (!debug_info_src->bin_path) { | |
144 | goto error; | |
145 | } | |
146 | ||
147 | debug_info_src->short_bin_path = get_filename_from_path( | |
148 | debug_info_src->bin_path); | |
149 | ||
150 | ret = bin_info_get_bin_loc(bin, ip, &(debug_info_src->bin_loc)); | |
151 | if (ret) { | |
152 | goto error; | |
153 | } | |
154 | } | |
155 | ||
156 | end: | |
157 | return debug_info_src; | |
158 | ||
159 | error: | |
160 | debug_info_source_destroy(debug_info_src); | |
161 | return NULL; | |
162 | } | |
163 | ||
164 | static | |
165 | void proc_debug_info_sources_destroy( | |
166 | struct proc_debug_info_sources *proc_dbg_info_src) | |
167 | { | |
168 | if (!proc_dbg_info_src) { | |
169 | return; | |
170 | } | |
171 | ||
172 | if (proc_dbg_info_src->baddr_to_bin_info) { | |
173 | g_hash_table_destroy(proc_dbg_info_src->baddr_to_bin_info); | |
174 | } | |
175 | ||
176 | if (proc_dbg_info_src->ip_to_debug_info_src) { | |
177 | g_hash_table_destroy(proc_dbg_info_src->ip_to_debug_info_src); | |
178 | } | |
179 | ||
180 | g_free(proc_dbg_info_src); | |
181 | } | |
182 | ||
183 | static | |
184 | struct proc_debug_info_sources *proc_debug_info_sources_create(void) | |
185 | { | |
186 | struct proc_debug_info_sources *proc_dbg_info_src = NULL; | |
187 | ||
188 | proc_dbg_info_src = g_new0(struct proc_debug_info_sources, 1); | |
189 | if (!proc_dbg_info_src) { | |
190 | goto end; | |
191 | } | |
192 | ||
193 | proc_dbg_info_src->baddr_to_bin_info = g_hash_table_new_full( | |
194 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
195 | (GDestroyNotify) bin_info_destroy); | |
196 | if (!proc_dbg_info_src->baddr_to_bin_info) { | |
197 | goto error; | |
198 | } | |
199 | ||
200 | proc_dbg_info_src->ip_to_debug_info_src = g_hash_table_new_full( | |
201 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
202 | (GDestroyNotify) debug_info_source_destroy); | |
203 | if (!proc_dbg_info_src->ip_to_debug_info_src) { | |
204 | goto error; | |
205 | } | |
206 | ||
207 | end: | |
208 | return proc_dbg_info_src; | |
209 | ||
210 | error: | |
211 | proc_debug_info_sources_destroy(proc_dbg_info_src); | |
212 | return NULL; | |
213 | } | |
214 | ||
215 | static | |
216 | struct proc_debug_info_sources *proc_debug_info_sources_ht_get_entry( | |
217 | GHashTable *ht, int64_t vpid) | |
218 | { | |
219 | gpointer key = g_new0(int64_t, 1); | |
220 | struct proc_debug_info_sources *proc_dbg_info_src = NULL; | |
221 | ||
222 | if (!key) { | |
223 | goto end; | |
224 | } | |
225 | ||
226 | *((int64_t *) key) = vpid; | |
227 | ||
228 | /* Exists? Return it */ | |
229 | proc_dbg_info_src = g_hash_table_lookup(ht, key); | |
230 | if (proc_dbg_info_src) { | |
231 | goto end; | |
232 | } | |
233 | ||
234 | /* Otherwise, create and return it */ | |
235 | proc_dbg_info_src = proc_debug_info_sources_create(); | |
236 | if (!proc_dbg_info_src) { | |
237 | goto end; | |
238 | } | |
239 | ||
240 | g_hash_table_insert(ht, key, proc_dbg_info_src); | |
241 | /* Ownership passed to ht */ | |
242 | key = NULL; | |
243 | end: | |
244 | g_free(key); | |
245 | return proc_dbg_info_src; | |
246 | } | |
247 | ||
248 | static | |
249 | struct debug_info_source *proc_debug_info_sources_get_entry( | |
250 | struct proc_debug_info_sources *proc_dbg_info_src, uint64_t ip) | |
251 | { | |
252 | struct debug_info_source *debug_info_src = NULL; | |
253 | gpointer key = g_new0(uint64_t, 1); | |
254 | GHashTableIter iter; | |
255 | gpointer baddr, value; | |
256 | ||
257 | if (!key) { | |
258 | goto end; | |
259 | } | |
260 | ||
261 | *((uint64_t *) key) = ip; | |
262 | ||
263 | /* Look in IP to debug infos hash table first. */ | |
264 | debug_info_src = g_hash_table_lookup( | |
265 | proc_dbg_info_src->ip_to_debug_info_src, | |
266 | key); | |
267 | if (debug_info_src) { | |
268 | goto end; | |
269 | } | |
270 | ||
271 | /* Check in all bin_infos. */ | |
272 | g_hash_table_iter_init(&iter, proc_dbg_info_src->baddr_to_bin_info); | |
273 | ||
274 | while (g_hash_table_iter_next(&iter, &baddr, &value)) | |
275 | { | |
276 | struct bin_info *bin = value; | |
277 | ||
278 | if (!bin_info_has_address(value, ip)) { | |
279 | continue; | |
280 | } | |
281 | ||
282 | /* | |
283 | * Found; add it to cache. | |
284 | * | |
285 | * FIXME: this should be bounded in size (and implement | |
286 | * a caching policy), and entries should be prunned when | |
287 | * libraries are unmapped. | |
288 | */ | |
289 | debug_info_src = debug_info_source_create_from_bin(bin, ip); | |
290 | if (debug_info_src) { | |
291 | g_hash_table_insert( | |
292 | proc_dbg_info_src->ip_to_debug_info_src, | |
293 | key, debug_info_src); | |
294 | /* Ownership passed to ht. */ | |
295 | key = NULL; | |
296 | } | |
297 | break; | |
298 | } | |
299 | ||
300 | end: | |
301 | free(key); | |
302 | return debug_info_src; | |
303 | } | |
304 | ||
305 | BT_HIDDEN | |
306 | struct debug_info_source *debug_info_query(struct debug_info *debug_info, | |
307 | int64_t vpid, uint64_t ip) | |
308 | { | |
309 | struct debug_info_source *dbg_info_src = NULL; | |
310 | struct proc_debug_info_sources *proc_dbg_info_src; | |
311 | ||
312 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
313 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
314 | if (!proc_dbg_info_src) { | |
315 | goto end; | |
316 | } | |
317 | ||
318 | dbg_info_src = proc_debug_info_sources_get_entry(proc_dbg_info_src, ip); | |
319 | ||
320 | end: | |
321 | return dbg_info_src; | |
322 | } | |
323 | ||
324 | BT_HIDDEN | |
9d325e17 | 325 | struct debug_info *debug_info_create(struct debug_info_component *comp) |
4f45f9bb JD |
326 | { |
327 | int ret; | |
328 | struct debug_info *debug_info; | |
329 | ||
330 | debug_info = g_new0(struct debug_info, 1); | |
331 | if (!debug_info) { | |
332 | goto end; | |
333 | } | |
334 | ||
335 | debug_info->vpid_to_proc_dbg_info_src = g_hash_table_new_full( | |
336 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
337 | (GDestroyNotify) proc_debug_info_sources_destroy); | |
338 | if (!debug_info->vpid_to_proc_dbg_info_src) { | |
339 | goto error; | |
340 | } | |
341 | ||
9d325e17 | 342 | debug_info->comp = comp; |
4f45f9bb JD |
343 | ret = debug_info_init(debug_info); |
344 | if (ret) { | |
345 | goto error; | |
346 | } | |
347 | ||
348 | end: | |
349 | return debug_info; | |
350 | error: | |
351 | g_free(debug_info); | |
352 | return NULL; | |
353 | } | |
354 | ||
355 | BT_HIDDEN | |
356 | void debug_info_destroy(struct debug_info *debug_info) | |
357 | { | |
358 | if (!debug_info) { | |
359 | goto end; | |
360 | } | |
361 | ||
362 | if (debug_info->vpid_to_proc_dbg_info_src) { | |
363 | g_hash_table_destroy(debug_info->vpid_to_proc_dbg_info_src); | |
364 | } | |
365 | ||
366 | g_free(debug_info); | |
367 | end: | |
368 | return; | |
369 | } | |
370 | ||
371 | static | |
372 | void handle_statedump_build_id_event(FILE *err, struct debug_info *debug_info, | |
373 | struct bt_ctf_event *event) | |
374 | { | |
375 | struct proc_debug_info_sources *proc_dbg_info_src; | |
376 | struct bin_info *bin = NULL; | |
377 | int ret; | |
378 | int64_t vpid; | |
379 | uint64_t baddr; | |
380 | ||
381 | ret = get_stream_event_context_int_field_value(err, | |
382 | event, "_vpid", &vpid); | |
383 | if (ret) { | |
384 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
385 | __FILE__, __LINE__); | |
386 | ret = -1; | |
387 | goto end; | |
388 | } | |
389 | ||
390 | ret = get_payload_unsigned_int_field_value(err, | |
391 | event, "_baddr", &baddr); | |
392 | if (ret) { | |
393 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
394 | __FILE__, __LINE__); | |
395 | ret = -1; | |
396 | goto end; | |
397 | } | |
398 | ||
399 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
400 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
401 | if (!proc_dbg_info_src) { | |
402 | goto end; | |
403 | } | |
404 | ||
405 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
406 | (gpointer) &baddr); | |
407 | if (!bin) { | |
408 | /* | |
409 | * The build_id event comes after the bin has been | |
410 | * created. If it isn't found, just ignore this event. | |
411 | */ | |
412 | goto end; | |
413 | } | |
414 | ||
415 | ret = get_payload_build_id_field_value(err, event, "_build_id", | |
416 | &bin->build_id, &bin->build_id_len); | |
417 | if (ret) { | |
418 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
419 | __FILE__, __LINE__); | |
420 | ret = -1; | |
421 | goto end; | |
422 | } | |
423 | ||
424 | /* | |
425 | * Reset the is_elf_only flag in case it had been set | |
426 | * previously, because we might find separate debug info using | |
427 | * the new build id information. | |
428 | */ | |
429 | bin->is_elf_only = false; | |
430 | ||
431 | // TODO | |
432 | // bin_info_set_build_id(bin, build_id, build_id_len); | |
433 | ||
434 | end: | |
435 | return; | |
436 | } | |
437 | ||
438 | static | |
439 | void handle_statedump_debug_link_event(FILE *err, struct debug_info *debug_info, | |
440 | struct bt_ctf_event *event) | |
441 | { | |
442 | struct proc_debug_info_sources *proc_dbg_info_src; | |
443 | struct bin_info *bin = NULL; | |
444 | int64_t vpid; | |
445 | uint64_t baddr; | |
446 | const char *filename = NULL; | |
447 | uint32_t crc32; | |
448 | uint64_t tmp; | |
449 | int ret; | |
450 | ||
451 | ret = get_stream_event_context_int_field_value(err, event, | |
452 | "_vpid", &vpid); | |
453 | if (ret) { | |
454 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
455 | __FILE__, __LINE__); | |
456 | ret = -1; | |
457 | goto end; | |
458 | } | |
459 | ||
460 | ret = get_payload_unsigned_int_field_value(err, | |
461 | event, "_baddr", &baddr); | |
462 | if (ret) { | |
463 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
464 | __FILE__, __LINE__); | |
465 | ret = -1; | |
466 | goto end; | |
467 | } | |
468 | ||
469 | ret = get_payload_unsigned_int_field_value(err, event, "_crc32", &tmp); | |
470 | if (ret) { | |
471 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
472 | __FILE__, __LINE__); | |
473 | ret = -1; | |
474 | goto end; | |
475 | } | |
476 | crc32 = (uint32_t) tmp; | |
477 | ||
478 | ret = get_payload_string_field_value(err, | |
479 | event, "_filename", &filename); | |
480 | if (ret) { | |
481 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
482 | __FILE__, __LINE__); | |
483 | ret = -1; | |
484 | goto end; | |
485 | } | |
486 | ||
487 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
488 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
489 | if (!proc_dbg_info_src) { | |
490 | goto end; | |
491 | } | |
492 | ||
493 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
494 | (gpointer) &baddr); | |
495 | if (!bin) { | |
496 | /* | |
497 | * The debug_link event comes after the bin has been | |
498 | * created. If it isn't found, just ignore this event. | |
499 | */ | |
500 | goto end; | |
501 | } | |
502 | ||
503 | bin_info_set_debug_link(bin, filename, crc32); | |
504 | ||
505 | end: | |
506 | return; | |
507 | } | |
508 | ||
509 | static | |
510 | void handle_bin_info_event(FILE *err, struct debug_info *debug_info, | |
511 | struct bt_ctf_event *event, bool has_pic_field) | |
512 | { | |
513 | struct proc_debug_info_sources *proc_dbg_info_src; | |
514 | struct bin_info *bin; | |
515 | uint64_t baddr, memsz; | |
516 | int64_t vpid; | |
517 | const char *path; | |
518 | gpointer key = NULL; | |
519 | bool is_pic; | |
520 | int ret; | |
521 | ||
522 | ret = get_payload_unsigned_int_field_value(err, | |
523 | event, "_baddr", &baddr); | |
524 | if (ret) { | |
525 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
526 | __FILE__, __LINE__); | |
527 | ret = -1; | |
528 | goto end; | |
529 | } | |
530 | ||
531 | ret = get_payload_unsigned_int_field_value(err, | |
532 | event, "_memsz", &memsz); | |
533 | if (ret) { | |
534 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
535 | __FILE__, __LINE__); | |
536 | ret = -1; | |
537 | goto end; | |
538 | } | |
539 | ||
540 | ret = get_payload_string_field_value(err, | |
541 | event, "_path", &path); | |
542 | if (ret) { | |
543 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
544 | __FILE__, __LINE__); | |
545 | ret = -1; | |
546 | goto end; | |
547 | } | |
548 | ||
549 | if (has_pic_field) { | |
550 | uint64_t tmp; | |
551 | ||
552 | ret = get_payload_unsigned_int_field_value(err, | |
553 | event, "_is_pic", &tmp); | |
554 | if (ret) { | |
555 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
556 | __FILE__, __LINE__); | |
557 | ret = -1; | |
558 | goto end; | |
559 | } | |
560 | is_pic = (tmp == 1); | |
561 | } else { | |
562 | /* | |
563 | * dlopen has no is_pic field, because the shared | |
564 | * object is always PIC. | |
565 | */ | |
566 | is_pic = true; | |
567 | } | |
568 | ||
569 | ret = get_stream_event_context_int_field_value(err, event, "_vpid", | |
570 | &vpid); | |
571 | if (ret) { | |
572 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
573 | __FILE__, __LINE__); | |
574 | ret = -1; | |
575 | goto end; | |
576 | } | |
577 | ||
578 | if (!path) { | |
579 | goto end; | |
580 | } | |
581 | ||
582 | if (memsz == 0) { | |
583 | /* Ignore VDSO. */ | |
584 | goto end; | |
585 | } | |
586 | ||
587 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
588 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
589 | if (!proc_dbg_info_src) { | |
590 | goto end; | |
591 | } | |
592 | ||
593 | key = g_new0(uint64_t, 1); | |
594 | if (!key) { | |
595 | goto end; | |
596 | } | |
597 | ||
598 | *((uint64_t *) key) = baddr; | |
599 | ||
600 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
601 | key); | |
602 | if (bin) { | |
603 | goto end; | |
604 | } | |
605 | ||
9d325e17 PP |
606 | bin = bin_info_create(path, baddr, memsz, is_pic, |
607 | debug_info->comp->arg_debug_dir, | |
608 | debug_info->comp->arg_target_prefix); | |
4f45f9bb JD |
609 | if (!bin) { |
610 | goto end; | |
611 | } | |
612 | ||
613 | g_hash_table_insert(proc_dbg_info_src->baddr_to_bin_info, | |
614 | key, bin); | |
615 | /* Ownership passed to ht. */ | |
616 | key = NULL; | |
617 | ||
618 | end: | |
619 | g_free(key); | |
620 | return; | |
621 | } | |
622 | ||
623 | static inline | |
624 | void handle_statedump_bin_info_event(FILE *err, struct debug_info *debug_info, | |
625 | struct bt_ctf_event *event) | |
626 | { | |
627 | handle_bin_info_event(err, debug_info, event, true); | |
628 | } | |
629 | ||
630 | static inline | |
631 | void handle_lib_load_event(FILE *err, struct debug_info *debug_info, | |
632 | struct bt_ctf_event *event) | |
633 | { | |
634 | handle_bin_info_event(err, debug_info, event, false); | |
635 | } | |
636 | ||
637 | static inline | |
638 | void handle_lib_unload_event(FILE *err, struct debug_info *debug_info, | |
639 | struct bt_ctf_event *event) | |
640 | { | |
641 | struct proc_debug_info_sources *proc_dbg_info_src; | |
642 | uint64_t baddr; | |
643 | int64_t vpid; | |
644 | gpointer key_ptr = NULL; | |
645 | int ret; | |
646 | ||
647 | ret = get_payload_unsigned_int_field_value(err, | |
648 | event, "_baddr", &baddr); | |
649 | if (ret) { | |
650 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
651 | __FILE__, __LINE__); | |
652 | ret = -1; | |
653 | goto end; | |
654 | } | |
655 | ||
656 | ret = get_stream_event_context_int_field_value(err, event, "_vpid", | |
657 | &vpid); | |
658 | if (ret) { | |
659 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
660 | __FILE__, __LINE__); | |
661 | ret = -1; | |
662 | goto end; | |
663 | } | |
664 | ||
665 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
666 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
667 | if (!proc_dbg_info_src) { | |
668 | goto end; | |
669 | } | |
670 | ||
671 | key_ptr = (gpointer) &baddr; | |
672 | (void) g_hash_table_remove(proc_dbg_info_src->baddr_to_bin_info, | |
673 | key_ptr); | |
674 | end: | |
675 | return; | |
676 | } | |
677 | ||
678 | static | |
679 | void handle_statedump_start(FILE *err, struct debug_info *debug_info, | |
680 | struct bt_ctf_event *event) | |
681 | { | |
682 | struct proc_debug_info_sources *proc_dbg_info_src; | |
683 | int64_t vpid; | |
684 | int ret; | |
685 | ||
686 | ret = get_stream_event_context_int_field_value(err, event, | |
687 | "_vpid", &vpid); | |
688 | if (ret) { | |
689 | fprintf(err, "[error] %s in %s:%d\n", __func__, | |
690 | __FILE__, __LINE__); | |
691 | ret = -1; | |
692 | goto end; | |
693 | } | |
694 | ||
695 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
696 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
697 | if (!proc_dbg_info_src) { | |
698 | goto end; | |
699 | } | |
700 | ||
701 | g_hash_table_remove_all(proc_dbg_info_src->baddr_to_bin_info); | |
702 | g_hash_table_remove_all(proc_dbg_info_src->ip_to_debug_info_src); | |
703 | ||
704 | end: | |
705 | return; | |
706 | } | |
707 | ||
708 | BT_HIDDEN | |
709 | void debug_info_handle_event(FILE *err, struct bt_ctf_event *event, | |
710 | struct debug_info *debug_info) | |
711 | { | |
712 | struct bt_ctf_event_class *event_class; | |
713 | const char *event_name; | |
714 | GQuark q_event_name; | |
715 | ||
716 | if (!debug_info || !event) { | |
717 | goto end; | |
718 | } | |
719 | event_class = bt_ctf_event_get_class(event); | |
720 | if (!event_class) { | |
721 | goto end; | |
722 | } | |
723 | event_name = bt_ctf_event_class_get_name(event_class); | |
724 | if (!event_name) { | |
725 | goto end_put_class; | |
726 | } | |
727 | q_event_name = g_quark_try_string(event_name); | |
728 | ||
729 | if (q_event_name == debug_info->q_statedump_bin_info) { | |
730 | /* State dump */ | |
731 | handle_statedump_bin_info_event(err, debug_info, event); | |
732 | } else if (q_event_name == debug_info->q_dl_open || | |
733 | q_event_name == debug_info->q_lib_load) { | |
734 | /* | |
735 | * dl_open and lib_load events are both checked for since | |
736 | * only dl_open was produced as of lttng-ust 2.8. | |
737 | * | |
738 | * lib_load, which is produced from lttng-ust 2.9+, is a lot | |
739 | * more reliable since it will be emitted when other functions | |
740 | * of the dlopen family are called (e.g. dlmopen) and when | |
741 | * library are transitively loaded. | |
742 | */ | |
743 | handle_lib_load_event(err, debug_info, event); | |
744 | } else if (q_event_name == debug_info->q_statedump_start) { | |
745 | /* Start state dump */ | |
746 | handle_statedump_start(err, debug_info, event); | |
747 | } else if (q_event_name == debug_info->q_statedump_debug_link) { | |
748 | /* Debug link info */ | |
749 | handle_statedump_debug_link_event(err, debug_info, event); | |
750 | } else if (q_event_name == debug_info->q_statedump_build_id) { | |
751 | /* Build ID info */ | |
752 | handle_statedump_build_id_event(err, debug_info, event); | |
753 | } else if (q_event_name == debug_info-> q_lib_unload) { | |
754 | handle_lib_unload_event(err, debug_info, event); | |
755 | } | |
756 | ||
757 | end_put_class: | |
758 | bt_put(event_class); | |
759 | end: | |
760 | return; | |
761 | } |