Commit | Line | Data |
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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 | ||
b4565e8b PP |
28 | #define BT_LOG_TAG "PLUGIN-CTF-LTTNG-UTILS-DEBUG-INFO-FLT" |
29 | #include "logging.h" | |
30 | ||
4f45f9bb JD |
31 | #include <assert.h> |
32 | #include <glib.h> | |
33 | #include "debug-info.h" | |
34 | #include "bin-info.h" | |
35 | #include "utils.h" | |
36 | #include "copy.h" | |
37 | ||
38 | struct proc_debug_info_sources { | |
39 | /* | |
40 | * Hash table: base address (pointer to uint64_t) to bin info; owned by | |
41 | * proc_debug_info_sources. | |
42 | */ | |
43 | GHashTable *baddr_to_bin_info; | |
44 | ||
45 | /* | |
46 | * Hash table: IP (pointer to uint64_t) to (struct debug_info_source *); | |
47 | * owned by proc_debug_info_sources. | |
48 | */ | |
49 | GHashTable *ip_to_debug_info_src; | |
50 | }; | |
51 | ||
52 | struct debug_info { | |
9d325e17 PP |
53 | struct debug_info_component *comp; |
54 | ||
4f45f9bb JD |
55 | /* |
56 | * Hash table of VPIDs (pointer to int64_t) to | |
57 | * (struct ctf_proc_debug_infos*); owned by debug_info. | |
58 | */ | |
59 | GHashTable *vpid_to_proc_dbg_info_src; | |
60 | GQuark q_statedump_bin_info; | |
61 | GQuark q_statedump_debug_link; | |
62 | GQuark q_statedump_build_id; | |
63 | GQuark q_statedump_start; | |
64 | GQuark q_dl_open; | |
65 | GQuark q_lib_load; | |
66 | GQuark q_lib_unload; | |
67 | }; | |
68 | ||
69 | static | |
70 | int debug_info_init(struct debug_info *info) | |
71 | { | |
72 | info->q_statedump_bin_info = g_quark_from_string( | |
73 | "lttng_ust_statedump:bin_info"); | |
74 | info->q_statedump_debug_link = g_quark_from_string( | |
75 | "lttng_ust_statedump:debug_link)"); | |
76 | info->q_statedump_build_id = g_quark_from_string( | |
77 | "lttng_ust_statedump:build_id"); | |
78 | info->q_statedump_start = g_quark_from_string( | |
79 | "lttng_ust_statedump:start"); | |
80 | info->q_dl_open = g_quark_from_string("lttng_ust_dl:dlopen"); | |
81 | info->q_lib_load = g_quark_from_string("lttng_ust_lib:load"); | |
82 | info->q_lib_unload = g_quark_from_string("lttng_ust_lib:unload"); | |
83 | ||
84 | return bin_info_init(); | |
85 | } | |
86 | ||
87 | static | |
88 | void debug_info_source_destroy(struct debug_info_source *debug_info_src) | |
89 | { | |
90 | if (!debug_info_src) { | |
91 | return; | |
92 | } | |
93 | ||
94 | free(debug_info_src->func); | |
95 | free(debug_info_src->src_path); | |
96 | free(debug_info_src->bin_path); | |
97 | free(debug_info_src->bin_loc); | |
98 | g_free(debug_info_src); | |
99 | } | |
100 | ||
101 | static | |
102 | struct debug_info_source *debug_info_source_create_from_bin(struct bin_info *bin, | |
103 | uint64_t ip) | |
104 | { | |
105 | int ret; | |
106 | struct debug_info_source *debug_info_src = NULL; | |
107 | struct source_location *src_loc = NULL; | |
108 | ||
109 | debug_info_src = g_new0(struct debug_info_source, 1); | |
110 | ||
111 | if (!debug_info_src) { | |
112 | goto end; | |
113 | } | |
114 | ||
115 | /* Lookup function name */ | |
116 | ret = bin_info_lookup_function_name(bin, ip, &debug_info_src->func); | |
117 | if (ret) { | |
118 | goto error; | |
119 | } | |
120 | ||
121 | /* Can't retrieve src_loc from ELF, or could not find binary, skip. */ | |
122 | if (!bin->is_elf_only || !debug_info_src->func) { | |
123 | /* Lookup source location */ | |
124 | ret = bin_info_lookup_source_location(bin, ip, &src_loc); | |
b4565e8b | 125 | BT_LOGD("Failed to lookup source location: ret=%d", ret); |
4f45f9bb JD |
126 | } |
127 | ||
128 | if (src_loc) { | |
129 | debug_info_src->line_no = src_loc->line_no; | |
130 | ||
131 | if (src_loc->filename) { | |
132 | debug_info_src->src_path = strdup(src_loc->filename); | |
133 | if (!debug_info_src->src_path) { | |
134 | goto error; | |
135 | } | |
136 | ||
137 | debug_info_src->short_src_path = get_filename_from_path( | |
138 | debug_info_src->src_path); | |
139 | } | |
140 | ||
141 | source_location_destroy(src_loc); | |
142 | } | |
143 | ||
144 | if (bin->elf_path) { | |
145 | debug_info_src->bin_path = strdup(bin->elf_path); | |
146 | if (!debug_info_src->bin_path) { | |
147 | goto error; | |
148 | } | |
149 | ||
150 | debug_info_src->short_bin_path = get_filename_from_path( | |
151 | debug_info_src->bin_path); | |
152 | ||
153 | ret = bin_info_get_bin_loc(bin, ip, &(debug_info_src->bin_loc)); | |
154 | if (ret) { | |
155 | goto error; | |
156 | } | |
157 | } | |
158 | ||
159 | end: | |
160 | return debug_info_src; | |
161 | ||
162 | error: | |
163 | debug_info_source_destroy(debug_info_src); | |
164 | return NULL; | |
165 | } | |
166 | ||
167 | static | |
168 | void proc_debug_info_sources_destroy( | |
169 | struct proc_debug_info_sources *proc_dbg_info_src) | |
170 | { | |
171 | if (!proc_dbg_info_src) { | |
172 | return; | |
173 | } | |
174 | ||
175 | if (proc_dbg_info_src->baddr_to_bin_info) { | |
176 | g_hash_table_destroy(proc_dbg_info_src->baddr_to_bin_info); | |
177 | } | |
178 | ||
179 | if (proc_dbg_info_src->ip_to_debug_info_src) { | |
180 | g_hash_table_destroy(proc_dbg_info_src->ip_to_debug_info_src); | |
181 | } | |
182 | ||
183 | g_free(proc_dbg_info_src); | |
184 | } | |
185 | ||
186 | static | |
187 | struct proc_debug_info_sources *proc_debug_info_sources_create(void) | |
188 | { | |
189 | struct proc_debug_info_sources *proc_dbg_info_src = NULL; | |
190 | ||
191 | proc_dbg_info_src = g_new0(struct proc_debug_info_sources, 1); | |
192 | if (!proc_dbg_info_src) { | |
193 | goto end; | |
194 | } | |
195 | ||
196 | proc_dbg_info_src->baddr_to_bin_info = g_hash_table_new_full( | |
197 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
198 | (GDestroyNotify) bin_info_destroy); | |
199 | if (!proc_dbg_info_src->baddr_to_bin_info) { | |
200 | goto error; | |
201 | } | |
202 | ||
203 | proc_dbg_info_src->ip_to_debug_info_src = g_hash_table_new_full( | |
204 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
205 | (GDestroyNotify) debug_info_source_destroy); | |
206 | if (!proc_dbg_info_src->ip_to_debug_info_src) { | |
207 | goto error; | |
208 | } | |
209 | ||
210 | end: | |
211 | return proc_dbg_info_src; | |
212 | ||
213 | error: | |
214 | proc_debug_info_sources_destroy(proc_dbg_info_src); | |
215 | return NULL; | |
216 | } | |
217 | ||
218 | static | |
219 | struct proc_debug_info_sources *proc_debug_info_sources_ht_get_entry( | |
220 | GHashTable *ht, int64_t vpid) | |
221 | { | |
222 | gpointer key = g_new0(int64_t, 1); | |
223 | struct proc_debug_info_sources *proc_dbg_info_src = NULL; | |
224 | ||
225 | if (!key) { | |
226 | goto end; | |
227 | } | |
228 | ||
229 | *((int64_t *) key) = vpid; | |
230 | ||
231 | /* Exists? Return it */ | |
232 | proc_dbg_info_src = g_hash_table_lookup(ht, key); | |
233 | if (proc_dbg_info_src) { | |
234 | goto end; | |
235 | } | |
236 | ||
237 | /* Otherwise, create and return it */ | |
238 | proc_dbg_info_src = proc_debug_info_sources_create(); | |
239 | if (!proc_dbg_info_src) { | |
240 | goto end; | |
241 | } | |
242 | ||
243 | g_hash_table_insert(ht, key, proc_dbg_info_src); | |
244 | /* Ownership passed to ht */ | |
245 | key = NULL; | |
246 | end: | |
247 | g_free(key); | |
248 | return proc_dbg_info_src; | |
249 | } | |
250 | ||
251 | static | |
252 | struct debug_info_source *proc_debug_info_sources_get_entry( | |
253 | struct proc_debug_info_sources *proc_dbg_info_src, uint64_t ip) | |
254 | { | |
255 | struct debug_info_source *debug_info_src = NULL; | |
256 | gpointer key = g_new0(uint64_t, 1); | |
257 | GHashTableIter iter; | |
258 | gpointer baddr, value; | |
259 | ||
260 | if (!key) { | |
261 | goto end; | |
262 | } | |
263 | ||
264 | *((uint64_t *) key) = ip; | |
265 | ||
266 | /* Look in IP to debug infos hash table first. */ | |
267 | debug_info_src = g_hash_table_lookup( | |
268 | proc_dbg_info_src->ip_to_debug_info_src, | |
269 | key); | |
270 | if (debug_info_src) { | |
271 | goto end; | |
272 | } | |
273 | ||
274 | /* Check in all bin_infos. */ | |
275 | g_hash_table_iter_init(&iter, proc_dbg_info_src->baddr_to_bin_info); | |
276 | ||
277 | while (g_hash_table_iter_next(&iter, &baddr, &value)) | |
278 | { | |
279 | struct bin_info *bin = value; | |
280 | ||
281 | if (!bin_info_has_address(value, ip)) { | |
282 | continue; | |
283 | } | |
284 | ||
285 | /* | |
286 | * Found; add it to cache. | |
287 | * | |
288 | * FIXME: this should be bounded in size (and implement | |
289 | * a caching policy), and entries should be prunned when | |
290 | * libraries are unmapped. | |
291 | */ | |
292 | debug_info_src = debug_info_source_create_from_bin(bin, ip); | |
293 | if (debug_info_src) { | |
294 | g_hash_table_insert( | |
295 | proc_dbg_info_src->ip_to_debug_info_src, | |
296 | key, debug_info_src); | |
297 | /* Ownership passed to ht. */ | |
298 | key = NULL; | |
299 | } | |
300 | break; | |
301 | } | |
302 | ||
303 | end: | |
304 | free(key); | |
305 | return debug_info_src; | |
306 | } | |
307 | ||
308 | BT_HIDDEN | |
309 | struct debug_info_source *debug_info_query(struct debug_info *debug_info, | |
310 | int64_t vpid, uint64_t ip) | |
311 | { | |
312 | struct debug_info_source *dbg_info_src = NULL; | |
313 | struct proc_debug_info_sources *proc_dbg_info_src; | |
314 | ||
315 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
316 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
317 | if (!proc_dbg_info_src) { | |
318 | goto end; | |
319 | } | |
320 | ||
321 | dbg_info_src = proc_debug_info_sources_get_entry(proc_dbg_info_src, ip); | |
322 | ||
323 | end: | |
324 | return dbg_info_src; | |
325 | } | |
326 | ||
327 | BT_HIDDEN | |
9d325e17 | 328 | struct debug_info *debug_info_create(struct debug_info_component *comp) |
4f45f9bb JD |
329 | { |
330 | int ret; | |
331 | struct debug_info *debug_info; | |
332 | ||
333 | debug_info = g_new0(struct debug_info, 1); | |
334 | if (!debug_info) { | |
335 | goto end; | |
336 | } | |
337 | ||
338 | debug_info->vpid_to_proc_dbg_info_src = g_hash_table_new_full( | |
339 | g_int64_hash, g_int64_equal, (GDestroyNotify) g_free, | |
340 | (GDestroyNotify) proc_debug_info_sources_destroy); | |
341 | if (!debug_info->vpid_to_proc_dbg_info_src) { | |
342 | goto error; | |
343 | } | |
344 | ||
9d325e17 | 345 | debug_info->comp = comp; |
4f45f9bb JD |
346 | ret = debug_info_init(debug_info); |
347 | if (ret) { | |
348 | goto error; | |
349 | } | |
350 | ||
351 | end: | |
352 | return debug_info; | |
353 | error: | |
354 | g_free(debug_info); | |
355 | return NULL; | |
356 | } | |
357 | ||
358 | BT_HIDDEN | |
359 | void debug_info_destroy(struct debug_info *debug_info) | |
360 | { | |
361 | if (!debug_info) { | |
362 | goto end; | |
363 | } | |
364 | ||
365 | if (debug_info->vpid_to_proc_dbg_info_src) { | |
366 | g_hash_table_destroy(debug_info->vpid_to_proc_dbg_info_src); | |
367 | } | |
368 | ||
369 | g_free(debug_info); | |
370 | end: | |
371 | return; | |
372 | } | |
373 | ||
374 | static | |
375 | void handle_statedump_build_id_event(FILE *err, struct debug_info *debug_info, | |
376 | struct bt_ctf_event *event) | |
377 | { | |
378 | struct proc_debug_info_sources *proc_dbg_info_src; | |
379 | struct bin_info *bin = NULL; | |
380 | int ret; | |
381 | int64_t vpid; | |
382 | uint64_t baddr; | |
383 | ||
384 | ret = get_stream_event_context_int_field_value(err, | |
385 | event, "_vpid", &vpid); | |
386 | if (ret) { | |
4f45f9bb JD |
387 | goto end; |
388 | } | |
389 | ||
390 | ret = get_payload_unsigned_int_field_value(err, | |
391 | event, "_baddr", &baddr); | |
392 | if (ret) { | |
b4d4912f | 393 | BT_LOGE_STR("Failed to get unsigned int value for _vpid field."); |
4f45f9bb JD |
394 | goto end; |
395 | } | |
396 | ||
397 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
398 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
399 | if (!proc_dbg_info_src) { | |
400 | goto end; | |
401 | } | |
402 | ||
403 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
404 | (gpointer) &baddr); | |
405 | if (!bin) { | |
406 | /* | |
407 | * The build_id event comes after the bin has been | |
408 | * created. If it isn't found, just ignore this event. | |
409 | */ | |
410 | goto end; | |
411 | } | |
412 | ||
413 | ret = get_payload_build_id_field_value(err, event, "_build_id", | |
414 | &bin->build_id, &bin->build_id_len); | |
415 | if (ret) { | |
b4d4912f | 416 | BT_LOGE_STR("Failed to get _build_id field value."); |
4f45f9bb JD |
417 | goto end; |
418 | } | |
419 | ||
420 | /* | |
421 | * Reset the is_elf_only flag in case it had been set | |
422 | * previously, because we might find separate debug info using | |
423 | * the new build id information. | |
424 | */ | |
425 | bin->is_elf_only = false; | |
426 | ||
427 | // TODO | |
428 | // bin_info_set_build_id(bin, build_id, build_id_len); | |
429 | ||
430 | end: | |
431 | return; | |
432 | } | |
433 | ||
434 | static | |
435 | void handle_statedump_debug_link_event(FILE *err, struct debug_info *debug_info, | |
436 | struct bt_ctf_event *event) | |
437 | { | |
438 | struct proc_debug_info_sources *proc_dbg_info_src; | |
439 | struct bin_info *bin = NULL; | |
440 | int64_t vpid; | |
441 | uint64_t baddr; | |
442 | const char *filename = NULL; | |
443 | uint32_t crc32; | |
444 | uint64_t tmp; | |
445 | int ret; | |
446 | ||
447 | ret = get_stream_event_context_int_field_value(err, event, | |
448 | "_vpid", &vpid); | |
449 | if (ret) { | |
4f45f9bb JD |
450 | goto end; |
451 | } | |
452 | ||
453 | ret = get_payload_unsigned_int_field_value(err, | |
454 | event, "_baddr", &baddr); | |
455 | if (ret) { | |
b4d4912f | 456 | BT_LOGE_STR("Failed to get unsigned int value for _baddr field."); |
4f45f9bb JD |
457 | ret = -1; |
458 | goto end; | |
459 | } | |
460 | ||
461 | ret = get_payload_unsigned_int_field_value(err, event, "_crc32", &tmp); | |
462 | if (ret) { | |
b4d4912f | 463 | BT_LOGE_STR("Failed to get unsigned int value for _crc32 field."); |
4f45f9bb JD |
464 | ret = -1; |
465 | goto end; | |
466 | } | |
467 | crc32 = (uint32_t) tmp; | |
468 | ||
469 | ret = get_payload_string_field_value(err, | |
470 | event, "_filename", &filename); | |
471 | if (ret) { | |
b4d4912f | 472 | BT_LOGE_STR("Failed to get string value for _filename field."); |
4f45f9bb JD |
473 | ret = -1; |
474 | goto end; | |
475 | } | |
476 | ||
477 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
478 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
479 | if (!proc_dbg_info_src) { | |
480 | goto end; | |
481 | } | |
482 | ||
483 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
484 | (gpointer) &baddr); | |
485 | if (!bin) { | |
486 | /* | |
487 | * The debug_link event comes after the bin has been | |
488 | * created. If it isn't found, just ignore this event. | |
489 | */ | |
490 | goto end; | |
491 | } | |
492 | ||
493 | bin_info_set_debug_link(bin, filename, crc32); | |
494 | ||
495 | end: | |
496 | return; | |
497 | } | |
498 | ||
499 | static | |
500 | void handle_bin_info_event(FILE *err, struct debug_info *debug_info, | |
501 | struct bt_ctf_event *event, bool has_pic_field) | |
502 | { | |
503 | struct proc_debug_info_sources *proc_dbg_info_src; | |
504 | struct bin_info *bin; | |
505 | uint64_t baddr, memsz; | |
506 | int64_t vpid; | |
507 | const char *path; | |
508 | gpointer key = NULL; | |
509 | bool is_pic; | |
510 | int ret; | |
511 | ||
512 | ret = get_payload_unsigned_int_field_value(err, | |
513 | event, "_baddr", &baddr); | |
514 | if (ret) { | |
b4d4912f | 515 | BT_LOGE_STR("Failed to get unsigned int value for _baddr field."); |
4f45f9bb JD |
516 | goto end; |
517 | } | |
518 | ||
519 | ret = get_payload_unsigned_int_field_value(err, | |
520 | event, "_memsz", &memsz); | |
521 | if (ret) { | |
b4d4912f | 522 | BT_LOGE_STR("Failed to get unsigned int value for _memsz field."); |
4f45f9bb JD |
523 | goto end; |
524 | } | |
525 | ||
65db8b88 JD |
526 | /* |
527 | * This field is not produced by the dlopen event emitted before | |
528 | * lttng-ust 2.9. | |
529 | */ | |
4f45f9bb JD |
530 | ret = get_payload_string_field_value(err, |
531 | event, "_path", &path); | |
65db8b88 | 532 | if (ret || !path) { |
4f45f9bb JD |
533 | goto end; |
534 | } | |
535 | ||
536 | if (has_pic_field) { | |
537 | uint64_t tmp; | |
538 | ||
539 | ret = get_payload_unsigned_int_field_value(err, | |
540 | event, "_is_pic", &tmp); | |
541 | if (ret) { | |
b4d4912f | 542 | BT_LOGE_STR("Failed to get unsigned int value for _is_pic field."); |
4f45f9bb JD |
543 | ret = -1; |
544 | goto end; | |
545 | } | |
546 | is_pic = (tmp == 1); | |
547 | } else { | |
548 | /* | |
549 | * dlopen has no is_pic field, because the shared | |
550 | * object is always PIC. | |
551 | */ | |
552 | is_pic = true; | |
553 | } | |
554 | ||
555 | ret = get_stream_event_context_int_field_value(err, event, "_vpid", | |
556 | &vpid); | |
557 | if (ret) { | |
4f45f9bb JD |
558 | goto end; |
559 | } | |
560 | ||
4f45f9bb JD |
561 | if (memsz == 0) { |
562 | /* Ignore VDSO. */ | |
563 | goto end; | |
564 | } | |
565 | ||
566 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
567 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
568 | if (!proc_dbg_info_src) { | |
569 | goto end; | |
570 | } | |
571 | ||
572 | key = g_new0(uint64_t, 1); | |
573 | if (!key) { | |
574 | goto end; | |
575 | } | |
576 | ||
577 | *((uint64_t *) key) = baddr; | |
578 | ||
579 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
580 | key); | |
581 | if (bin) { | |
582 | goto end; | |
583 | } | |
584 | ||
9d325e17 PP |
585 | bin = bin_info_create(path, baddr, memsz, is_pic, |
586 | debug_info->comp->arg_debug_dir, | |
587 | debug_info->comp->arg_target_prefix); | |
4f45f9bb JD |
588 | if (!bin) { |
589 | goto end; | |
590 | } | |
591 | ||
592 | g_hash_table_insert(proc_dbg_info_src->baddr_to_bin_info, | |
593 | key, bin); | |
594 | /* Ownership passed to ht. */ | |
595 | key = NULL; | |
596 | ||
597 | end: | |
598 | g_free(key); | |
599 | return; | |
600 | } | |
601 | ||
602 | static inline | |
603 | void handle_statedump_bin_info_event(FILE *err, struct debug_info *debug_info, | |
604 | struct bt_ctf_event *event) | |
605 | { | |
606 | handle_bin_info_event(err, debug_info, event, true); | |
607 | } | |
608 | ||
609 | static inline | |
610 | void handle_lib_load_event(FILE *err, struct debug_info *debug_info, | |
611 | struct bt_ctf_event *event) | |
612 | { | |
613 | handle_bin_info_event(err, debug_info, event, false); | |
614 | } | |
615 | ||
616 | static inline | |
617 | void handle_lib_unload_event(FILE *err, struct debug_info *debug_info, | |
618 | struct bt_ctf_event *event) | |
619 | { | |
620 | struct proc_debug_info_sources *proc_dbg_info_src; | |
621 | uint64_t baddr; | |
622 | int64_t vpid; | |
623 | gpointer key_ptr = NULL; | |
624 | int ret; | |
625 | ||
626 | ret = get_payload_unsigned_int_field_value(err, | |
627 | event, "_baddr", &baddr); | |
628 | if (ret) { | |
b4d4912f | 629 | BT_LOGE_STR("Failed to get unsigned int value for _baddr field."); |
4f45f9bb JD |
630 | ret = -1; |
631 | goto end; | |
632 | } | |
633 | ||
634 | ret = get_stream_event_context_int_field_value(err, event, "_vpid", | |
635 | &vpid); | |
636 | if (ret) { | |
4f45f9bb JD |
637 | goto end; |
638 | } | |
639 | ||
640 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
641 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
642 | if (!proc_dbg_info_src) { | |
643 | goto end; | |
644 | } | |
645 | ||
646 | key_ptr = (gpointer) &baddr; | |
647 | (void) g_hash_table_remove(proc_dbg_info_src->baddr_to_bin_info, | |
648 | key_ptr); | |
649 | end: | |
650 | return; | |
651 | } | |
652 | ||
653 | static | |
654 | void handle_statedump_start(FILE *err, struct debug_info *debug_info, | |
655 | struct bt_ctf_event *event) | |
656 | { | |
657 | struct proc_debug_info_sources *proc_dbg_info_src; | |
658 | int64_t vpid; | |
659 | int ret; | |
660 | ||
661 | ret = get_stream_event_context_int_field_value(err, event, | |
662 | "_vpid", &vpid); | |
663 | if (ret) { | |
4f45f9bb JD |
664 | goto end; |
665 | } | |
666 | ||
667 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
668 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
669 | if (!proc_dbg_info_src) { | |
670 | goto end; | |
671 | } | |
672 | ||
673 | g_hash_table_remove_all(proc_dbg_info_src->baddr_to_bin_info); | |
674 | g_hash_table_remove_all(proc_dbg_info_src->ip_to_debug_info_src); | |
675 | ||
676 | end: | |
677 | return; | |
678 | } | |
679 | ||
680 | BT_HIDDEN | |
681 | void debug_info_handle_event(FILE *err, struct bt_ctf_event *event, | |
682 | struct debug_info *debug_info) | |
683 | { | |
684 | struct bt_ctf_event_class *event_class; | |
685 | const char *event_name; | |
686 | GQuark q_event_name; | |
687 | ||
688 | if (!debug_info || !event) { | |
689 | goto end; | |
690 | } | |
691 | event_class = bt_ctf_event_get_class(event); | |
692 | if (!event_class) { | |
693 | goto end; | |
694 | } | |
695 | event_name = bt_ctf_event_class_get_name(event_class); | |
696 | if (!event_name) { | |
697 | goto end_put_class; | |
698 | } | |
699 | q_event_name = g_quark_try_string(event_name); | |
700 | ||
701 | if (q_event_name == debug_info->q_statedump_bin_info) { | |
702 | /* State dump */ | |
703 | handle_statedump_bin_info_event(err, debug_info, event); | |
704 | } else if (q_event_name == debug_info->q_dl_open || | |
705 | q_event_name == debug_info->q_lib_load) { | |
706 | /* | |
707 | * dl_open and lib_load events are both checked for since | |
708 | * only dl_open was produced as of lttng-ust 2.8. | |
709 | * | |
710 | * lib_load, which is produced from lttng-ust 2.9+, is a lot | |
711 | * more reliable since it will be emitted when other functions | |
712 | * of the dlopen family are called (e.g. dlmopen) and when | |
713 | * library are transitively loaded. | |
714 | */ | |
715 | handle_lib_load_event(err, debug_info, event); | |
716 | } else if (q_event_name == debug_info->q_statedump_start) { | |
717 | /* Start state dump */ | |
718 | handle_statedump_start(err, debug_info, event); | |
719 | } else if (q_event_name == debug_info->q_statedump_debug_link) { | |
720 | /* Debug link info */ | |
721 | handle_statedump_debug_link_event(err, debug_info, event); | |
722 | } else if (q_event_name == debug_info->q_statedump_build_id) { | |
723 | /* Build ID info */ | |
724 | handle_statedump_build_id_event(err, debug_info, event); | |
725 | } else if (q_event_name == debug_info-> q_lib_unload) { | |
726 | handle_lib_unload_event(err, debug_info, event); | |
727 | } | |
728 | ||
729 | end_put_class: | |
730 | bt_put(event_class); | |
731 | end: | |
732 | return; | |
733 | } |