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; | |
445e79d6 | 383 | uint64_t build_id_len; |
4f45f9bb JD |
384 | |
385 | ret = get_stream_event_context_int_field_value(err, | |
386 | event, "_vpid", &vpid); | |
387 | if (ret) { | |
4f45f9bb JD |
388 | goto end; |
389 | } | |
390 | ||
391 | ret = get_payload_unsigned_int_field_value(err, | |
392 | event, "_baddr", &baddr); | |
393 | if (ret) { | |
b4d4912f | 394 | BT_LOGE_STR("Failed to get unsigned int value for _vpid field."); |
4f45f9bb JD |
395 | goto end; |
396 | } | |
397 | ||
398 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
399 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
400 | if (!proc_dbg_info_src) { | |
401 | goto end; | |
402 | } | |
403 | ||
404 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
405 | (gpointer) &baddr); | |
406 | if (!bin) { | |
407 | /* | |
408 | * The build_id event comes after the bin has been | |
409 | * created. If it isn't found, just ignore this event. | |
410 | */ | |
411 | goto end; | |
412 | } | |
413 | ||
414 | ret = get_payload_build_id_field_value(err, event, "_build_id", | |
445e79d6 | 415 | &bin->build_id, &build_id_len); |
4f45f9bb | 416 | if (ret) { |
b4d4912f | 417 | BT_LOGE_STR("Failed to get _build_id field value."); |
4f45f9bb JD |
418 | goto end; |
419 | } | |
445e79d6 JG |
420 | if (build_id_len > SIZE_MAX) { |
421 | bin->build_id_len = (size_t) build_id_len; | |
422 | } | |
4f45f9bb JD |
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) { | |
4f45f9bb JD |
454 | goto end; |
455 | } | |
456 | ||
457 | ret = get_payload_unsigned_int_field_value(err, | |
458 | event, "_baddr", &baddr); | |
459 | if (ret) { | |
b4d4912f | 460 | BT_LOGE_STR("Failed to get unsigned int value for _baddr field."); |
4f45f9bb JD |
461 | ret = -1; |
462 | goto end; | |
463 | } | |
464 | ||
465 | ret = get_payload_unsigned_int_field_value(err, event, "_crc32", &tmp); | |
466 | if (ret) { | |
b4d4912f | 467 | BT_LOGE_STR("Failed to get unsigned int value for _crc32 field."); |
4f45f9bb JD |
468 | ret = -1; |
469 | goto end; | |
470 | } | |
471 | crc32 = (uint32_t) tmp; | |
472 | ||
473 | ret = get_payload_string_field_value(err, | |
474 | event, "_filename", &filename); | |
475 | if (ret) { | |
b4d4912f | 476 | BT_LOGE_STR("Failed to get string value for _filename field."); |
4f45f9bb JD |
477 | ret = -1; |
478 | goto end; | |
479 | } | |
480 | ||
481 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
482 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
483 | if (!proc_dbg_info_src) { | |
484 | goto end; | |
485 | } | |
486 | ||
487 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
488 | (gpointer) &baddr); | |
489 | if (!bin) { | |
490 | /* | |
491 | * The debug_link event comes after the bin has been | |
492 | * created. If it isn't found, just ignore this event. | |
493 | */ | |
494 | goto end; | |
495 | } | |
496 | ||
497 | bin_info_set_debug_link(bin, filename, crc32); | |
498 | ||
499 | end: | |
500 | return; | |
501 | } | |
502 | ||
503 | static | |
504 | void handle_bin_info_event(FILE *err, struct debug_info *debug_info, | |
505 | struct bt_ctf_event *event, bool has_pic_field) | |
506 | { | |
507 | struct proc_debug_info_sources *proc_dbg_info_src; | |
508 | struct bin_info *bin; | |
509 | uint64_t baddr, memsz; | |
510 | int64_t vpid; | |
511 | const char *path; | |
512 | gpointer key = NULL; | |
513 | bool is_pic; | |
514 | int ret; | |
515 | ||
516 | ret = get_payload_unsigned_int_field_value(err, | |
517 | event, "_baddr", &baddr); | |
518 | if (ret) { | |
b4d4912f | 519 | BT_LOGE_STR("Failed to get unsigned int value for _baddr field."); |
4f45f9bb JD |
520 | goto end; |
521 | } | |
522 | ||
523 | ret = get_payload_unsigned_int_field_value(err, | |
524 | event, "_memsz", &memsz); | |
525 | if (ret) { | |
b4d4912f | 526 | BT_LOGE_STR("Failed to get unsigned int value for _memsz field."); |
4f45f9bb JD |
527 | goto end; |
528 | } | |
529 | ||
65db8b88 JD |
530 | /* |
531 | * This field is not produced by the dlopen event emitted before | |
532 | * lttng-ust 2.9. | |
533 | */ | |
4f45f9bb JD |
534 | ret = get_payload_string_field_value(err, |
535 | event, "_path", &path); | |
65db8b88 | 536 | if (ret || !path) { |
4f45f9bb JD |
537 | goto end; |
538 | } | |
539 | ||
540 | if (has_pic_field) { | |
541 | uint64_t tmp; | |
542 | ||
543 | ret = get_payload_unsigned_int_field_value(err, | |
544 | event, "_is_pic", &tmp); | |
545 | if (ret) { | |
b4d4912f | 546 | BT_LOGE_STR("Failed to get unsigned int value for _is_pic field."); |
4f45f9bb JD |
547 | ret = -1; |
548 | goto end; | |
549 | } | |
550 | is_pic = (tmp == 1); | |
551 | } else { | |
552 | /* | |
553 | * dlopen has no is_pic field, because the shared | |
554 | * object is always PIC. | |
555 | */ | |
556 | is_pic = true; | |
557 | } | |
558 | ||
559 | ret = get_stream_event_context_int_field_value(err, event, "_vpid", | |
560 | &vpid); | |
561 | if (ret) { | |
4f45f9bb JD |
562 | goto end; |
563 | } | |
564 | ||
4f45f9bb JD |
565 | if (memsz == 0) { |
566 | /* Ignore VDSO. */ | |
567 | goto end; | |
568 | } | |
569 | ||
570 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
571 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
572 | if (!proc_dbg_info_src) { | |
573 | goto end; | |
574 | } | |
575 | ||
576 | key = g_new0(uint64_t, 1); | |
577 | if (!key) { | |
578 | goto end; | |
579 | } | |
580 | ||
581 | *((uint64_t *) key) = baddr; | |
582 | ||
583 | bin = g_hash_table_lookup(proc_dbg_info_src->baddr_to_bin_info, | |
584 | key); | |
585 | if (bin) { | |
586 | goto end; | |
587 | } | |
588 | ||
9d325e17 PP |
589 | bin = bin_info_create(path, baddr, memsz, is_pic, |
590 | debug_info->comp->arg_debug_dir, | |
591 | debug_info->comp->arg_target_prefix); | |
4f45f9bb JD |
592 | if (!bin) { |
593 | goto end; | |
594 | } | |
595 | ||
596 | g_hash_table_insert(proc_dbg_info_src->baddr_to_bin_info, | |
597 | key, bin); | |
598 | /* Ownership passed to ht. */ | |
599 | key = NULL; | |
600 | ||
601 | end: | |
602 | g_free(key); | |
603 | return; | |
604 | } | |
605 | ||
606 | static inline | |
607 | void handle_statedump_bin_info_event(FILE *err, struct debug_info *debug_info, | |
608 | struct bt_ctf_event *event) | |
609 | { | |
610 | handle_bin_info_event(err, debug_info, event, true); | |
611 | } | |
612 | ||
613 | static inline | |
614 | void handle_lib_load_event(FILE *err, struct debug_info *debug_info, | |
615 | struct bt_ctf_event *event) | |
616 | { | |
617 | handle_bin_info_event(err, debug_info, event, false); | |
618 | } | |
619 | ||
620 | static inline | |
621 | void handle_lib_unload_event(FILE *err, struct debug_info *debug_info, | |
622 | struct bt_ctf_event *event) | |
623 | { | |
624 | struct proc_debug_info_sources *proc_dbg_info_src; | |
625 | uint64_t baddr; | |
626 | int64_t vpid; | |
627 | gpointer key_ptr = NULL; | |
628 | int ret; | |
629 | ||
630 | ret = get_payload_unsigned_int_field_value(err, | |
631 | event, "_baddr", &baddr); | |
632 | if (ret) { | |
b4d4912f | 633 | BT_LOGE_STR("Failed to get unsigned int value for _baddr field."); |
4f45f9bb JD |
634 | ret = -1; |
635 | goto end; | |
636 | } | |
637 | ||
638 | ret = get_stream_event_context_int_field_value(err, event, "_vpid", | |
639 | &vpid); | |
640 | if (ret) { | |
4f45f9bb JD |
641 | goto end; |
642 | } | |
643 | ||
644 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
645 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
646 | if (!proc_dbg_info_src) { | |
647 | goto end; | |
648 | } | |
649 | ||
650 | key_ptr = (gpointer) &baddr; | |
651 | (void) g_hash_table_remove(proc_dbg_info_src->baddr_to_bin_info, | |
652 | key_ptr); | |
653 | end: | |
654 | return; | |
655 | } | |
656 | ||
657 | static | |
658 | void handle_statedump_start(FILE *err, struct debug_info *debug_info, | |
659 | struct bt_ctf_event *event) | |
660 | { | |
661 | struct proc_debug_info_sources *proc_dbg_info_src; | |
662 | int64_t vpid; | |
663 | int ret; | |
664 | ||
665 | ret = get_stream_event_context_int_field_value(err, event, | |
666 | "_vpid", &vpid); | |
667 | if (ret) { | |
4f45f9bb JD |
668 | goto end; |
669 | } | |
670 | ||
671 | proc_dbg_info_src = proc_debug_info_sources_ht_get_entry( | |
672 | debug_info->vpid_to_proc_dbg_info_src, vpid); | |
673 | if (!proc_dbg_info_src) { | |
674 | goto end; | |
675 | } | |
676 | ||
677 | g_hash_table_remove_all(proc_dbg_info_src->baddr_to_bin_info); | |
678 | g_hash_table_remove_all(proc_dbg_info_src->ip_to_debug_info_src); | |
679 | ||
680 | end: | |
681 | return; | |
682 | } | |
683 | ||
684 | BT_HIDDEN | |
685 | void debug_info_handle_event(FILE *err, struct bt_ctf_event *event, | |
686 | struct debug_info *debug_info) | |
687 | { | |
688 | struct bt_ctf_event_class *event_class; | |
689 | const char *event_name; | |
690 | GQuark q_event_name; | |
691 | ||
692 | if (!debug_info || !event) { | |
693 | goto end; | |
694 | } | |
695 | event_class = bt_ctf_event_get_class(event); | |
696 | if (!event_class) { | |
697 | goto end; | |
698 | } | |
699 | event_name = bt_ctf_event_class_get_name(event_class); | |
700 | if (!event_name) { | |
701 | goto end_put_class; | |
702 | } | |
703 | q_event_name = g_quark_try_string(event_name); | |
704 | ||
705 | if (q_event_name == debug_info->q_statedump_bin_info) { | |
706 | /* State dump */ | |
707 | handle_statedump_bin_info_event(err, debug_info, event); | |
708 | } else if (q_event_name == debug_info->q_dl_open || | |
709 | q_event_name == debug_info->q_lib_load) { | |
710 | /* | |
711 | * dl_open and lib_load events are both checked for since | |
712 | * only dl_open was produced as of lttng-ust 2.8. | |
713 | * | |
714 | * lib_load, which is produced from lttng-ust 2.9+, is a lot | |
715 | * more reliable since it will be emitted when other functions | |
716 | * of the dlopen family are called (e.g. dlmopen) and when | |
717 | * library are transitively loaded. | |
718 | */ | |
719 | handle_lib_load_event(err, debug_info, event); | |
720 | } else if (q_event_name == debug_info->q_statedump_start) { | |
721 | /* Start state dump */ | |
722 | handle_statedump_start(err, debug_info, event); | |
723 | } else if (q_event_name == debug_info->q_statedump_debug_link) { | |
724 | /* Debug link info */ | |
725 | handle_statedump_debug_link_event(err, debug_info, event); | |
726 | } else if (q_event_name == debug_info->q_statedump_build_id) { | |
727 | /* Build ID info */ | |
728 | handle_statedump_build_id_event(err, debug_info, event); | |
729 | } else if (q_event_name == debug_info-> q_lib_unload) { | |
730 | handle_lib_unload_event(err, debug_info, event); | |
731 | } | |
732 | ||
733 | end_put_class: | |
734 | bt_put(event_class); | |
735 | end: | |
736 | return; | |
737 | } |