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