Commit | Line | Data |
---|---|---|
d0b96690 | 1 | /* |
d0b96690 DG |
2 | * Copyright (C) 2010-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
3 | * | |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
d0b96690 | 5 | * |
d0b96690 DG |
6 | */ |
7 | ||
6c1c0768 | 8 | #define _LGPL_SOURCE |
d0b96690 DG |
9 | #include <stdint.h> |
10 | #include <string.h> | |
11 | #include <stdarg.h> | |
12 | #include <stdio.h> | |
13 | #include <limits.h> | |
14 | #include <unistd.h> | |
15 | #include <inttypes.h> | |
c9e313bc SM |
16 | #include <common/common.hpp> |
17 | #include <common/time.hpp> | |
d0b96690 | 18 | |
c9e313bc SM |
19 | #include "ust-registry.hpp" |
20 | #include "ust-clock.hpp" | |
21 | #include "ust-app.hpp" | |
d0b96690 | 22 | |
8c645bb0 MD |
23 | #define NR_CLOCK_OFFSET_SAMPLES 10 |
24 | ||
25 | struct offset_sample { | |
c2636b57 | 26 | int64_t offset; /* correlation offset */ |
8c645bb0 MD |
27 | uint64_t measure_delta; /* lower is better */ |
28 | }; | |
29 | ||
da860cab MD |
30 | static |
31 | int _lttng_field_statedump(struct ust_registry_session *session, | |
b623cb6a | 32 | const struct lttng_ust_ctl_field *fields, size_t nr_fields, |
da860cab MD |
33 | size_t *iter_field, size_t nesting); |
34 | ||
d0b96690 DG |
35 | static inline |
36 | int get_count_order(unsigned int count) | |
37 | { | |
38 | int order; | |
39 | ||
78ddfe55 | 40 | order = lttng_fls(count) - 1; |
46b4dda6 | 41 | if (count & (count - 1)) { |
d0b96690 | 42 | order++; |
46b4dda6 | 43 | } |
a0377dfe | 44 | LTTNG_ASSERT(order >= 0); |
d0b96690 DG |
45 | return order; |
46 | } | |
47 | ||
48 | /* | |
49 | * Returns offset where to write in metadata array, or negative error value on error. | |
50 | */ | |
51 | static | |
52 | ssize_t metadata_reserve(struct ust_registry_session *session, size_t len) | |
53 | { | |
54 | size_t new_len = session->metadata_len + len; | |
55 | size_t new_alloc_len = new_len; | |
56 | size_t old_alloc_len = session->metadata_alloc_len; | |
57 | ssize_t ret; | |
58 | ||
59 | if (new_alloc_len > (UINT32_MAX >> 1)) | |
60 | return -EINVAL; | |
61 | if ((old_alloc_len << 1) > (UINT32_MAX >> 1)) | |
62 | return -EINVAL; | |
63 | ||
64 | if (new_alloc_len > old_alloc_len) { | |
65 | char *newptr; | |
66 | ||
67 | new_alloc_len = | |
8957eb48 | 68 | std::max<size_t>(1U << get_count_order(new_alloc_len), old_alloc_len << 1); |
7966af57 | 69 | newptr = (char *) realloc(session->metadata, new_alloc_len); |
d0b96690 DG |
70 | if (!newptr) |
71 | return -ENOMEM; | |
72 | session->metadata = newptr; | |
73 | /* We zero directly the memory from start of allocation. */ | |
74 | memset(&session->metadata[old_alloc_len], 0, new_alloc_len - old_alloc_len); | |
75 | session->metadata_alloc_len = new_alloc_len; | |
76 | } | |
77 | ret = session->metadata_len; | |
78 | session->metadata_len += len; | |
79 | return ret; | |
80 | } | |
81 | ||
d7ba1388 MD |
82 | static |
83 | int metadata_file_append(struct ust_registry_session *session, | |
84 | const char *str, size_t len) | |
85 | { | |
86 | ssize_t written; | |
87 | ||
88 | if (session->metadata_fd < 0) { | |
89 | return 0; | |
90 | } | |
91 | /* Write to metadata file */ | |
92 | written = lttng_write(session->metadata_fd, str, len); | |
93 | if (written != len) { | |
94 | return -1; | |
95 | } | |
96 | return 0; | |
97 | } | |
98 | ||
d0b96690 DG |
99 | /* |
100 | * We have exclusive access to our metadata buffer (protected by the | |
101 | * ust_lock), so we can do racy operations such as looking for | |
102 | * remaining space left in packet and write, since mutual exclusion | |
103 | * protects us from concurrent writes. | |
104 | */ | |
d22ad5f8 | 105 | static ATTR_FORMAT_PRINTF(2, 3) |
d0b96690 DG |
106 | int lttng_metadata_printf(struct ust_registry_session *session, |
107 | const char *fmt, ...) | |
108 | { | |
109 | char *str = NULL; | |
110 | size_t len; | |
111 | va_list ap; | |
112 | ssize_t offset; | |
113 | int ret; | |
114 | ||
115 | va_start(ap, fmt); | |
116 | ret = vasprintf(&str, fmt, ap); | |
117 | va_end(ap); | |
118 | if (ret < 0) | |
119 | return -ENOMEM; | |
120 | ||
121 | len = strlen(str); | |
122 | offset = metadata_reserve(session, len); | |
123 | if (offset < 0) { | |
124 | ret = offset; | |
125 | goto end; | |
126 | } | |
127 | memcpy(&session->metadata[offset], str, len); | |
d7ba1388 MD |
128 | ret = metadata_file_append(session, str, len); |
129 | if (ret) { | |
130 | PERROR("Error appending to metadata file"); | |
131 | goto end; | |
132 | } | |
d0b96690 DG |
133 | DBG3("Append to metadata: \"%s\"", str); |
134 | ret = 0; | |
135 | ||
136 | end: | |
137 | free(str); | |
138 | return ret; | |
139 | } | |
140 | ||
da860cab MD |
141 | static |
142 | int print_tabs(struct ust_registry_session *session, size_t nesting) | |
143 | { | |
144 | size_t i; | |
145 | ||
146 | for (i = 0; i < nesting; i++) { | |
147 | int ret; | |
148 | ||
149 | ret = lttng_metadata_printf(session, " "); | |
150 | if (ret) { | |
151 | return ret; | |
152 | } | |
153 | } | |
154 | return 0; | |
155 | } | |
156 | ||
a1f68b22 MD |
157 | static |
158 | void sanitize_ctf_identifier(char *out, const char *in) | |
159 | { | |
160 | size_t i; | |
161 | ||
fc4b93fa | 162 | for (i = 0; i < LTTNG_UST_ABI_SYM_NAME_LEN; i++) { |
a1f68b22 MD |
163 | switch (in[i]) { |
164 | case '.': | |
165 | case '$': | |
166 | case ':': | |
167 | out[i] = '_'; | |
168 | break; | |
169 | default: | |
170 | out[i] = in[i]; | |
171 | } | |
172 | } | |
173 | } | |
174 | ||
8de88061 JR |
175 | static |
176 | int print_escaped_ctf_string(struct ust_registry_session *session, const char *string) | |
177 | { | |
35c829f8 | 178 | int ret = 0; |
8de88061 JR |
179 | size_t i; |
180 | char cur; | |
181 | ||
182 | i = 0; | |
183 | cur = string[i]; | |
184 | while (cur != '\0') { | |
185 | switch (cur) { | |
186 | case '\n': | |
187 | ret = lttng_metadata_printf(session, "%s", "\\n"); | |
188 | break; | |
189 | case '\\': | |
190 | case '"': | |
191 | ret = lttng_metadata_printf(session, "%c", '\\'); | |
192 | if (ret) { | |
193 | goto error; | |
194 | } | |
195 | /* We still print the current char */ | |
196 | /* Fallthrough */ | |
197 | default: | |
198 | ret = lttng_metadata_printf(session, "%c", cur); | |
199 | break; | |
200 | } | |
201 | ||
202 | if (ret) { | |
203 | goto error; | |
204 | } | |
205 | ||
206 | cur = string[++i]; | |
207 | } | |
208 | error: | |
209 | return ret; | |
210 | } | |
211 | ||
10b56aef MD |
212 | /* Called with session registry mutex held. */ |
213 | static | |
214 | int ust_metadata_enum_statedump(struct ust_registry_session *session, | |
215 | const char *enum_name, | |
216 | uint64_t enum_id, | |
b623cb6a | 217 | const struct lttng_ust_ctl_integer_type *container_type, |
da860cab | 218 | const char *field_name, size_t *iter_field, size_t nesting) |
10b56aef MD |
219 | { |
220 | struct ust_registry_enum *reg_enum; | |
b623cb6a | 221 | const struct lttng_ust_ctl_enum_entry *entries; |
10b56aef MD |
222 | size_t nr_entries; |
223 | int ret = 0; | |
224 | size_t i; | |
fc4b93fa | 225 | char identifier[LTTNG_UST_ABI_SYM_NAME_LEN]; |
10b56aef MD |
226 | |
227 | rcu_read_lock(); | |
228 | reg_enum = ust_registry_lookup_enum_by_id(session, enum_name, enum_id); | |
229 | rcu_read_unlock(); | |
230 | /* reg_enum can still be used because session registry mutex is held. */ | |
231 | if (!reg_enum) { | |
232 | ret = -ENOENT; | |
233 | goto end; | |
234 | } | |
235 | entries = reg_enum->entries; | |
236 | nr_entries = reg_enum->nr_entries; | |
237 | ||
da860cab MD |
238 | ret = print_tabs(session, nesting); |
239 | if (ret) { | |
240 | goto end; | |
241 | } | |
10b56aef | 242 | ret = lttng_metadata_printf(session, |
da860cab | 243 | "enum : integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u; } {\n", |
10b56aef MD |
244 | container_type->size, |
245 | container_type->alignment, | |
246 | container_type->signedness, | |
b623cb6a | 247 | (container_type->encoding == lttng_ust_ctl_encode_none) |
10b56aef | 248 | ? "none" |
b623cb6a | 249 | : (container_type->encoding == lttng_ust_ctl_encode_UTF8) |
10b56aef MD |
250 | ? "UTF8" |
251 | : "ASCII", | |
252 | container_type->base); | |
253 | if (ret) { | |
254 | goto end; | |
255 | } | |
1ddb0e8a | 256 | nesting++; |
10b56aef MD |
257 | /* Dump all entries */ |
258 | for (i = 0; i < nr_entries; i++) { | |
b623cb6a | 259 | const struct lttng_ust_ctl_enum_entry *entry = &entries[i]; |
10b56aef MD |
260 | int j, len; |
261 | ||
a1f68b22 MD |
262 | ret = print_tabs(session, nesting); |
263 | if (ret) { | |
264 | goto end; | |
265 | } | |
10b56aef | 266 | ret = lttng_metadata_printf(session, |
a1f68b22 | 267 | "\""); |
10b56aef MD |
268 | if (ret) { |
269 | goto end; | |
270 | } | |
271 | len = strlen(entry->string); | |
272 | /* Escape the character '"' */ | |
273 | for (j = 0; j < len; j++) { | |
274 | char c = entry->string[j]; | |
275 | ||
276 | switch (c) { | |
277 | case '"': | |
278 | ret = lttng_metadata_printf(session, | |
279 | "\\\""); | |
280 | break; | |
281 | case '\\': | |
282 | ret = lttng_metadata_printf(session, | |
283 | "\\\\"); | |
284 | break; | |
285 | default: | |
286 | ret = lttng_metadata_printf(session, | |
287 | "%c", c); | |
288 | break; | |
289 | } | |
290 | if (ret) { | |
291 | goto end; | |
292 | } | |
293 | } | |
e85e3723 | 294 | ret = lttng_metadata_printf(session, "\""); |
10b56aef MD |
295 | if (ret) { |
296 | goto end; | |
297 | } | |
3b016e58 | 298 | |
9d27cec7 | 299 | if (entry->u.extra.options & |
b623cb6a | 300 | LTTNG_UST_CTL_UST_ENUM_ENTRY_OPTION_IS_AUTO) { |
e85e3723 PP |
301 | ret = lttng_metadata_printf(session, ",\n"); |
302 | if (ret) { | |
303 | goto end; | |
304 | } | |
10b56aef MD |
305 | } else { |
306 | ret = lttng_metadata_printf(session, | |
e85e3723 PP |
307 | " = "); |
308 | if (ret) { | |
309 | goto end; | |
310 | } | |
3b016e58 | 311 | |
e85e3723 | 312 | if (entry->start.signedness) { |
3b016e58 | 313 | ret = lttng_metadata_printf(session, |
d22ad5f8 | 314 | "%" PRId64, entry->start.value); |
3b016e58 MD |
315 | } else { |
316 | ret = lttng_metadata_printf(session, | |
d22ad5f8 | 317 | "%" PRIu64, entry->start.value); |
e85e3723 PP |
318 | } |
319 | if (ret) { | |
320 | goto end; | |
321 | } | |
322 | ||
323 | if (entry->start.signedness == entry->end.signedness && | |
324 | entry->start.value == | |
325 | entry->end.value) { | |
326 | ret = lttng_metadata_printf(session, ",\n"); | |
327 | } else { | |
328 | if (entry->end.signedness) { | |
329 | ret = lttng_metadata_printf(session, | |
d22ad5f8 SM |
330 | " ... %" PRId64 ",\n", |
331 | entry->end.value); | |
e85e3723 PP |
332 | } else { |
333 | ret = lttng_metadata_printf(session, | |
d22ad5f8 | 334 | " ... %" PRIu64 ",\n", |
e85e3723 PP |
335 | entry->end.value); |
336 | } | |
337 | } | |
338 | if (ret) { | |
339 | goto end; | |
3b016e58 | 340 | } |
10b56aef MD |
341 | } |
342 | } | |
1ddb0e8a | 343 | nesting--; |
a1f68b22 MD |
344 | sanitize_ctf_identifier(identifier, field_name); |
345 | ret = print_tabs(session, nesting); | |
346 | if (ret) { | |
347 | goto end; | |
348 | } | |
349 | ret = lttng_metadata_printf(session, "} _%s;\n", | |
350 | identifier); | |
da860cab MD |
351 | end: |
352 | (*iter_field)++; | |
353 | return ret; | |
354 | } | |
355 | ||
da860cab MD |
356 | static |
357 | int _lttng_variant_statedump(struct ust_registry_session *session, | |
0d32d1a9 MD |
358 | uint32_t nr_choices, const char *tag_name, |
359 | uint32_t alignment, | |
b623cb6a | 360 | const struct lttng_ust_ctl_field *fields, size_t nr_fields, |
da860cab MD |
361 | size_t *iter_field, size_t nesting) |
362 | { | |
b623cb6a | 363 | const struct lttng_ust_ctl_field *variant = &fields[*iter_field]; |
0d32d1a9 | 364 | uint32_t i; |
da860cab | 365 | int ret; |
fc4b93fa | 366 | char identifier[LTTNG_UST_ABI_SYM_NAME_LEN]; |
da860cab | 367 | |
da860cab | 368 | (*iter_field)++; |
0d32d1a9 MD |
369 | sanitize_ctf_identifier(identifier, tag_name); |
370 | if (alignment) { | |
371 | ret = print_tabs(session, nesting); | |
372 | if (ret) { | |
373 | goto end; | |
374 | } | |
375 | ret = lttng_metadata_printf(session, | |
376 | "struct { } align(%u) _%s_padding;\n", | |
377 | alignment * CHAR_BIT, | |
378 | variant->name); | |
379 | if (ret) { | |
380 | goto end; | |
381 | } | |
382 | } | |
a1f68b22 MD |
383 | ret = print_tabs(session, nesting); |
384 | if (ret) { | |
385 | goto end; | |
386 | } | |
da860cab | 387 | ret = lttng_metadata_printf(session, |
a1f68b22 MD |
388 | "variant <_%s> {\n", |
389 | identifier); | |
da860cab MD |
390 | if (ret) { |
391 | goto end; | |
392 | } | |
393 | ||
394 | for (i = 0; i < nr_choices; i++) { | |
395 | if (*iter_field >= nr_fields) { | |
396 | ret = -EOVERFLOW; | |
397 | goto end; | |
398 | } | |
399 | ret = _lttng_field_statedump(session, | |
400 | fields, nr_fields, | |
401 | iter_field, nesting + 1); | |
dc6403f3 JG |
402 | if (ret) { |
403 | goto end; | |
404 | } | |
da860cab | 405 | } |
a1f68b22 MD |
406 | sanitize_ctf_identifier(identifier, variant->name); |
407 | ret = print_tabs(session, nesting); | |
850c5d4a JR |
408 | if (ret) { |
409 | goto end; | |
410 | } | |
da860cab | 411 | ret = lttng_metadata_printf(session, |
a1f68b22 MD |
412 | "} _%s;\n", |
413 | identifier); | |
da860cab MD |
414 | if (ret) { |
415 | goto end; | |
416 | } | |
10b56aef MD |
417 | end: |
418 | return ret; | |
419 | } | |
420 | ||
d0b96690 DG |
421 | static |
422 | int _lttng_field_statedump(struct ust_registry_session *session, | |
b623cb6a | 423 | const struct lttng_ust_ctl_field *fields, size_t nr_fields, |
da860cab | 424 | size_t *iter_field, size_t nesting) |
d0b96690 DG |
425 | { |
426 | int ret = 0; | |
427 | const char *bo_be = " byte_order = be;"; | |
428 | const char *bo_le = " byte_order = le;"; | |
429 | const char *bo_native = ""; | |
430 | const char *bo_reverse; | |
b623cb6a | 431 | const struct lttng_ust_ctl_field *field; |
d0b96690 | 432 | |
da860cab MD |
433 | if (*iter_field >= nr_fields) { |
434 | ret = -EOVERFLOW; | |
435 | goto end; | |
436 | } | |
437 | field = &fields[*iter_field]; | |
438 | ||
439 | if (session->byte_order == BIG_ENDIAN) { | |
d0b96690 | 440 | bo_reverse = bo_le; |
da860cab | 441 | } else { |
d0b96690 | 442 | bo_reverse = bo_be; |
da860cab | 443 | } |
d0b96690 DG |
444 | |
445 | switch (field->type.atype) { | |
b623cb6a | 446 | case lttng_ust_ctl_atype_integer: |
da860cab MD |
447 | ret = print_tabs(session, nesting); |
448 | if (ret) { | |
449 | goto end; | |
450 | } | |
d0b96690 | 451 | ret = lttng_metadata_printf(session, |
da860cab | 452 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s;\n", |
0d32d1a9 MD |
453 | field->type.u.integer.size, |
454 | field->type.u.integer.alignment, | |
455 | field->type.u.integer.signedness, | |
b623cb6a | 456 | (field->type.u.integer.encoding == lttng_ust_ctl_encode_none) |
d0b96690 | 457 | ? "none" |
b623cb6a | 458 | : (field->type.u.integer.encoding == lttng_ust_ctl_encode_UTF8) |
d0b96690 DG |
459 | ? "UTF8" |
460 | : "ASCII", | |
0d32d1a9 MD |
461 | field->type.u.integer.base, |
462 | field->type.u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
d0b96690 | 463 | field->name); |
da860cab | 464 | (*iter_field)++; |
d0b96690 | 465 | break; |
b623cb6a | 466 | case lttng_ust_ctl_atype_enum: |
10b56aef | 467 | ret = ust_metadata_enum_statedump(session, |
0d32d1a9 MD |
468 | field->type.u.legacy.basic.enumeration.name, |
469 | field->type.u.legacy.basic.enumeration.id, | |
470 | &field->type.u.legacy.basic.enumeration.container_type, | |
da860cab | 471 | field->name, iter_field, nesting); |
10b56aef | 472 | break; |
b623cb6a | 473 | case lttng_ust_ctl_atype_float: |
da860cab MD |
474 | ret = print_tabs(session, nesting); |
475 | if (ret) { | |
476 | goto end; | |
477 | } | |
d0b96690 | 478 | ret = lttng_metadata_printf(session, |
da860cab | 479 | "floating_point { exp_dig = %u; mant_dig = %u; align = %u;%s } _%s;\n", |
0d32d1a9 MD |
480 | field->type.u._float.exp_dig, |
481 | field->type.u._float.mant_dig, | |
482 | field->type.u._float.alignment, | |
483 | field->type.u._float.reverse_byte_order ? bo_reverse : bo_native, | |
d0b96690 | 484 | field->name); |
da860cab | 485 | (*iter_field)++; |
d0b96690 | 486 | break; |
b623cb6a | 487 | case lttng_ust_ctl_atype_array: |
d0b96690 | 488 | { |
b623cb6a | 489 | const struct lttng_ust_ctl_basic_type *elem_type; |
d0b96690 | 490 | |
da860cab MD |
491 | ret = print_tabs(session, nesting); |
492 | if (ret) { | |
493 | goto end; | |
494 | } | |
0d32d1a9 MD |
495 | elem_type = &field->type.u.legacy.array.elem_type; |
496 | /* Only integers are currently supported in arrays. */ | |
b623cb6a | 497 | if (elem_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
498 | ret = -EINVAL; |
499 | goto end; | |
500 | } | |
d0b96690 | 501 | ret = lttng_metadata_printf(session, |
da860cab | 502 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n", |
d0b96690 DG |
503 | elem_type->u.basic.integer.size, |
504 | elem_type->u.basic.integer.alignment, | |
505 | elem_type->u.basic.integer.signedness, | |
b623cb6a | 506 | (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none) |
d0b96690 | 507 | ? "none" |
b623cb6a | 508 | : (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8) |
d0b96690 DG |
509 | ? "UTF8" |
510 | : "ASCII", | |
511 | elem_type->u.basic.integer.base, | |
512 | elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
0d32d1a9 MD |
513 | field->name, field->type.u.legacy.array.length); |
514 | (*iter_field)++; | |
515 | break; | |
516 | } | |
b623cb6a | 517 | case lttng_ust_ctl_atype_array_nestable: |
0d32d1a9 MD |
518 | { |
519 | uint32_t array_length; | |
b623cb6a MJ |
520 | const struct lttng_ust_ctl_field *array_nestable; |
521 | const struct lttng_ust_ctl_type *elem_type; | |
0d32d1a9 MD |
522 | |
523 | array_length = field->type.u.array_nestable.length; | |
524 | (*iter_field)++; | |
525 | ||
526 | if (*iter_field >= nr_fields) { | |
527 | ret = -EOVERFLOW; | |
528 | goto end; | |
529 | } | |
530 | array_nestable = &fields[*iter_field]; | |
531 | elem_type = &array_nestable->type; | |
532 | ||
533 | /* Only integers are currently supported in arrays. */ | |
b623cb6a | 534 | if (elem_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
535 | ret = -EINVAL; |
536 | goto end; | |
537 | } | |
538 | ||
539 | if (field->type.u.array_nestable.alignment) { | |
540 | ret = print_tabs(session, nesting); | |
541 | if (ret) { | |
542 | goto end; | |
543 | } | |
544 | ret = lttng_metadata_printf(session, | |
545 | "struct { } align(%u) _%s_padding;\n", | |
546 | field->type.u.array_nestable.alignment * CHAR_BIT, | |
547 | field->name); | |
548 | if (ret) { | |
549 | goto end; | |
550 | } | |
551 | } | |
552 | ||
553 | ret = print_tabs(session, nesting); | |
554 | if (ret) { | |
555 | goto end; | |
556 | } | |
557 | ret = lttng_metadata_printf(session, | |
558 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n", | |
559 | elem_type->u.integer.size, | |
560 | elem_type->u.integer.alignment, | |
561 | elem_type->u.integer.signedness, | |
b623cb6a | 562 | (elem_type->u.integer.encoding == lttng_ust_ctl_encode_none) |
0d32d1a9 | 563 | ? "none" |
b623cb6a | 564 | : (elem_type->u.integer.encoding == lttng_ust_ctl_encode_UTF8) |
0d32d1a9 MD |
565 | ? "UTF8" |
566 | : "ASCII", | |
567 | elem_type->u.integer.base, | |
568 | elem_type->u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
569 | field->name, array_length); | |
da860cab | 570 | (*iter_field)++; |
d0b96690 DG |
571 | break; |
572 | } | |
b623cb6a | 573 | case lttng_ust_ctl_atype_sequence: |
d0b96690 | 574 | { |
b623cb6a MJ |
575 | const struct lttng_ust_ctl_basic_type *elem_type; |
576 | const struct lttng_ust_ctl_basic_type *length_type; | |
d0b96690 | 577 | |
0d32d1a9 MD |
578 | elem_type = &field->type.u.legacy.sequence.elem_type; |
579 | length_type = &field->type.u.legacy.sequence.length_type; | |
da860cab MD |
580 | ret = print_tabs(session, nesting); |
581 | if (ret) { | |
582 | goto end; | |
583 | } | |
0d32d1a9 MD |
584 | |
585 | /* Only integers are currently supported in sequences. */ | |
b623cb6a | 586 | if (elem_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
587 | ret = -EINVAL; |
588 | goto end; | |
589 | } | |
590 | ||
d0b96690 | 591 | ret = lttng_metadata_printf(session, |
da860cab | 592 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } __%s_length;\n", |
d0b96690 DG |
593 | length_type->u.basic.integer.size, |
594 | (unsigned int) length_type->u.basic.integer.alignment, | |
595 | length_type->u.basic.integer.signedness, | |
b623cb6a | 596 | (length_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none) |
d0b96690 | 597 | ? "none" |
b623cb6a | 598 | : ((length_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8) |
d0b96690 DG |
599 | ? "UTF8" |
600 | : "ASCII"), | |
601 | length_type->u.basic.integer.base, | |
602 | length_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
603 | field->name); | |
da860cab MD |
604 | if (ret) { |
605 | goto end; | |
606 | } | |
d0b96690 | 607 | |
da860cab MD |
608 | ret = print_tabs(session, nesting); |
609 | if (ret) { | |
610 | goto end; | |
611 | } | |
d0b96690 | 612 | ret = lttng_metadata_printf(session, |
da860cab | 613 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ __%s_length ];\n", |
d0b96690 DG |
614 | elem_type->u.basic.integer.size, |
615 | (unsigned int) elem_type->u.basic.integer.alignment, | |
616 | elem_type->u.basic.integer.signedness, | |
b623cb6a | 617 | (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none) |
d0b96690 | 618 | ? "none" |
b623cb6a | 619 | : ((elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8) |
d0b96690 DG |
620 | ? "UTF8" |
621 | : "ASCII"), | |
622 | elem_type->u.basic.integer.base, | |
623 | elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
624 | field->name, | |
625 | field->name); | |
da860cab | 626 | (*iter_field)++; |
d0b96690 DG |
627 | break; |
628 | } | |
b623cb6a | 629 | case lttng_ust_ctl_atype_sequence_nestable: |
0d32d1a9 | 630 | { |
b623cb6a MJ |
631 | const struct lttng_ust_ctl_field *sequence_nestable; |
632 | const struct lttng_ust_ctl_type *elem_type; | |
0d32d1a9 MD |
633 | |
634 | (*iter_field)++; | |
635 | if (*iter_field >= nr_fields) { | |
636 | ret = -EOVERFLOW; | |
637 | goto end; | |
638 | } | |
639 | sequence_nestable = &fields[*iter_field]; | |
640 | elem_type = &sequence_nestable->type; | |
641 | ||
642 | /* Only integers are currently supported in sequences. */ | |
b623cb6a | 643 | if (elem_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
644 | ret = -EINVAL; |
645 | goto end; | |
646 | } | |
647 | ||
648 | if (field->type.u.sequence_nestable.alignment) { | |
649 | ret = print_tabs(session, nesting); | |
650 | if (ret) { | |
651 | goto end; | |
652 | } | |
653 | ret = lttng_metadata_printf(session, | |
654 | "struct { } align(%u) _%s_padding;\n", | |
655 | field->type.u.sequence_nestable.alignment * CHAR_BIT, | |
656 | field->name); | |
657 | if (ret) { | |
658 | goto end; | |
659 | } | |
660 | } | |
d0b96690 | 661 | |
0d32d1a9 MD |
662 | ret = print_tabs(session, nesting); |
663 | if (ret) { | |
664 | goto end; | |
665 | } | |
666 | ret = lttng_metadata_printf(session, | |
667 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ _%s ];\n", | |
668 | elem_type->u.integer.size, | |
669 | (unsigned int) elem_type->u.integer.alignment, | |
670 | elem_type->u.integer.signedness, | |
b623cb6a | 671 | (elem_type->u.integer.encoding == lttng_ust_ctl_encode_none) |
0d32d1a9 | 672 | ? "none" |
b623cb6a | 673 | : ((elem_type->u.integer.encoding == lttng_ust_ctl_encode_UTF8) |
0d32d1a9 MD |
674 | ? "UTF8" |
675 | : "ASCII"), | |
676 | elem_type->u.integer.base, | |
677 | elem_type->u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
678 | field->name, | |
679 | field->type.u.sequence_nestable.length_name); | |
680 | (*iter_field)++; | |
681 | break; | |
682 | } | |
b623cb6a | 683 | case lttng_ust_ctl_atype_string: |
d0b96690 | 684 | /* Default encoding is UTF8 */ |
da860cab MD |
685 | ret = print_tabs(session, nesting); |
686 | if (ret) { | |
687 | goto end; | |
688 | } | |
d0b96690 | 689 | ret = lttng_metadata_printf(session, |
da860cab | 690 | "string%s _%s;\n", |
b623cb6a | 691 | field->type.u.string.encoding == lttng_ust_ctl_encode_ASCII ? |
d0b96690 DG |
692 | " { encoding = ASCII; }" : "", |
693 | field->name); | |
da860cab MD |
694 | (*iter_field)++; |
695 | break; | |
b623cb6a | 696 | case lttng_ust_ctl_atype_variant: |
0d32d1a9 MD |
697 | ret = _lttng_variant_statedump(session, |
698 | field->type.u.legacy.variant.nr_choices, | |
699 | field->type.u.legacy.variant.tag_name, | |
700 | 0, | |
701 | fields, nr_fields, iter_field, nesting); | |
702 | if (ret) { | |
703 | goto end; | |
704 | } | |
705 | break; | |
b623cb6a | 706 | case lttng_ust_ctl_atype_variant_nestable: |
0d32d1a9 MD |
707 | ret = _lttng_variant_statedump(session, |
708 | field->type.u.variant_nestable.nr_choices, | |
709 | field->type.u.variant_nestable.tag_name, | |
710 | field->type.u.variant_nestable.alignment, | |
711 | fields, nr_fields, iter_field, nesting); | |
da860cab MD |
712 | if (ret) { |
713 | goto end; | |
714 | } | |
715 | break; | |
b623cb6a | 716 | case lttng_ust_ctl_atype_struct: |
0d32d1a9 MD |
717 | if (field->type.u.legacy._struct.nr_fields != 0) { |
718 | /* Currently only 0-length structures are supported. */ | |
719 | ret = -EINVAL; | |
720 | goto end; | |
721 | } | |
da860cab MD |
722 | ret = print_tabs(session, nesting); |
723 | if (ret) { | |
724 | goto end; | |
725 | } | |
726 | ret = lttng_metadata_printf(session, | |
727 | "struct {} _%s;\n", | |
728 | field->name); | |
729 | (*iter_field)++; | |
d0b96690 | 730 | break; |
b623cb6a | 731 | case lttng_ust_ctl_atype_struct_nestable: |
0d32d1a9 MD |
732 | if (field->type.u.struct_nestable.nr_fields != 0) { |
733 | /* Currently only 0-length structures are supported. */ | |
734 | ret = -EINVAL; | |
735 | goto end; | |
736 | } | |
737 | ret = print_tabs(session, nesting); | |
738 | if (ret) { | |
739 | goto end; | |
740 | } | |
741 | if (field->type.u.struct_nestable.alignment) { | |
742 | ret = lttng_metadata_printf(session, | |
743 | "struct {} align(%u) _%s;\n", | |
744 | field->type.u.struct_nestable.alignment * CHAR_BIT, | |
745 | field->name); | |
746 | if (ret) { | |
747 | goto end; | |
748 | } | |
749 | } else { | |
750 | ret = lttng_metadata_printf(session, | |
751 | "struct {} _%s;\n", | |
752 | field->name); | |
753 | } | |
754 | (*iter_field)++; | |
755 | break; | |
b623cb6a | 756 | case lttng_ust_ctl_atype_enum_nestable: |
0d32d1a9 | 757 | { |
b623cb6a MJ |
758 | const struct lttng_ust_ctl_field *container_field; |
759 | const struct lttng_ust_ctl_type *container_type; | |
0d32d1a9 MD |
760 | |
761 | (*iter_field)++; | |
762 | if (*iter_field >= nr_fields) { | |
763 | ret = -EOVERFLOW; | |
764 | goto end; | |
765 | } | |
766 | container_field = &fields[*iter_field]; | |
767 | container_type = &container_field->type; | |
768 | ||
769 | /* Only integers are supported as container types. */ | |
b623cb6a | 770 | if (container_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
771 | ret = -EINVAL; |
772 | goto end; | |
773 | } | |
774 | ret = ust_metadata_enum_statedump(session, | |
775 | field->type.u.enum_nestable.name, | |
776 | field->type.u.enum_nestable.id, | |
777 | &container_type->u.integer, | |
778 | field->name, iter_field, nesting); | |
779 | break; | |
780 | } | |
d0b96690 | 781 | default: |
da860cab | 782 | ret = -EINVAL; |
d0b96690 | 783 | } |
da860cab | 784 | end: |
d0b96690 DG |
785 | return ret; |
786 | } | |
787 | ||
788 | static | |
789 | int _lttng_context_metadata_statedump(struct ust_registry_session *session, | |
790 | size_t nr_ctx_fields, | |
b623cb6a | 791 | struct lttng_ust_ctl_field *ctx) |
d0b96690 DG |
792 | { |
793 | int ret = 0; | |
da860cab | 794 | size_t i = 0; |
d0b96690 DG |
795 | |
796 | if (!ctx) | |
797 | return 0; | |
da860cab MD |
798 | for (;;) { |
799 | if (i >= nr_ctx_fields) { | |
800 | break; | |
801 | } | |
802 | ret = _lttng_field_statedump(session, ctx, | |
803 | nr_ctx_fields, &i, 2); | |
804 | if (ret) { | |
805 | break; | |
806 | } | |
d0b96690 DG |
807 | } |
808 | return ret; | |
809 | } | |
810 | ||
811 | static | |
812 | int _lttng_fields_metadata_statedump(struct ust_registry_session *session, | |
813 | struct ust_registry_event *event) | |
814 | { | |
815 | int ret = 0; | |
da860cab | 816 | size_t i = 0; |
d0b96690 | 817 | |
da860cab MD |
818 | for (;;) { |
819 | if (i >= event->nr_fields) { | |
820 | break; | |
821 | } | |
822 | ret = _lttng_field_statedump(session, event->fields, | |
823 | event->nr_fields, &i, 2); | |
824 | if (ret) { | |
825 | break; | |
826 | } | |
d0b96690 DG |
827 | } |
828 | return ret; | |
829 | } | |
830 | ||
831 | /* | |
832 | * Should be called with session registry mutex held. | |
833 | */ | |
834 | int ust_metadata_event_statedump(struct ust_registry_session *session, | |
835 | struct ust_registry_channel *chan, | |
836 | struct ust_registry_event *event) | |
837 | { | |
838 | int ret = 0; | |
839 | ||
840 | /* Don't dump metadata events */ | |
841 | if (chan->chan_id == -1U) | |
842 | return 0; | |
843 | ||
844 | ret = lttng_metadata_printf(session, | |
845 | "event {\n" | |
846 | " name = \"%s\";\n" | |
847 | " id = %u;\n" | |
848 | " stream_id = %u;\n", | |
849 | event->name, | |
850 | event->id, | |
851 | chan->chan_id); | |
0d32d1a9 | 852 | if (ret) { |
d0b96690 | 853 | goto end; |
0d32d1a9 | 854 | } |
d0b96690 DG |
855 | |
856 | ret = lttng_metadata_printf(session, | |
857 | " loglevel = %d;\n", | |
2106efa0 | 858 | event->loglevel_value); |
0d32d1a9 | 859 | if (ret) { |
d0b96690 | 860 | goto end; |
0d32d1a9 | 861 | } |
d0b96690 DG |
862 | |
863 | if (event->model_emf_uri) { | |
864 | ret = lttng_metadata_printf(session, | |
865 | " model.emf.uri = \"%s\";\n", | |
866 | event->model_emf_uri); | |
0d32d1a9 | 867 | if (ret) { |
d0b96690 | 868 | goto end; |
0d32d1a9 | 869 | } |
d0b96690 DG |
870 | } |
871 | ||
d0b96690 DG |
872 | ret = lttng_metadata_printf(session, |
873 | " fields := struct {\n" | |
874 | ); | |
0d32d1a9 | 875 | if (ret) { |
d0b96690 | 876 | goto end; |
0d32d1a9 | 877 | } |
d0b96690 DG |
878 | |
879 | ret = _lttng_fields_metadata_statedump(session, event); | |
0d32d1a9 | 880 | if (ret) { |
d0b96690 | 881 | goto end; |
0d32d1a9 | 882 | } |
d0b96690 DG |
883 | |
884 | ret = lttng_metadata_printf(session, | |
885 | " };\n" | |
886 | "};\n\n"); | |
0d32d1a9 | 887 | if (ret) { |
d0b96690 | 888 | goto end; |
0d32d1a9 | 889 | } |
7972aab2 | 890 | event->metadata_dumped = 1; |
d0b96690 DG |
891 | |
892 | end: | |
893 | return ret; | |
894 | } | |
895 | ||
896 | /* | |
897 | * Should be called with session registry mutex held. | |
898 | */ | |
899 | int ust_metadata_channel_statedump(struct ust_registry_session *session, | |
900 | struct ust_registry_channel *chan) | |
901 | { | |
e4589ae2 | 902 | int ret; |
d0b96690 DG |
903 | |
904 | /* Don't dump metadata events */ | |
905 | if (chan->chan_id == -1U) | |
906 | return 0; | |
907 | ||
908 | if (!chan->header_type) | |
909 | return -EINVAL; | |
910 | ||
911 | ret = lttng_metadata_printf(session, | |
912 | "stream {\n" | |
913 | " id = %u;\n" | |
914 | " event.header := %s;\n" | |
915 | " packet.context := struct packet_context;\n", | |
916 | chan->chan_id, | |
b623cb6a | 917 | chan->header_type == LTTNG_UST_CTL_CHANNEL_HEADER_COMPACT ? |
d0b96690 DG |
918 | "struct event_header_compact" : |
919 | "struct event_header_large"); | |
0d32d1a9 | 920 | if (ret) { |
e4589ae2 | 921 | return ret; |
0d32d1a9 | 922 | } |
d0b96690 DG |
923 | |
924 | if (chan->ctx_fields) { | |
925 | ret = lttng_metadata_printf(session, | |
926 | " event.context := struct {\n"); | |
0d32d1a9 | 927 | if (ret) { |
e4589ae2 | 928 | return ret; |
0d32d1a9 | 929 | } |
d0b96690 DG |
930 | } |
931 | ret = _lttng_context_metadata_statedump(session, | |
932 | chan->nr_ctx_fields, | |
933 | chan->ctx_fields); | |
0d32d1a9 | 934 | if (ret) { |
e4589ae2 | 935 | return ret; |
0d32d1a9 | 936 | } |
d0b96690 DG |
937 | if (chan->ctx_fields) { |
938 | ret = lttng_metadata_printf(session, | |
939 | " };\n"); | |
0d32d1a9 | 940 | if (ret) { |
e4589ae2 | 941 | return ret; |
0d32d1a9 | 942 | } |
d0b96690 DG |
943 | } |
944 | ||
945 | ret = lttng_metadata_printf(session, | |
946 | "};\n\n"); | |
e4589ae2 SM |
947 | if (ret) { |
948 | return ret; | |
949 | } | |
950 | ||
7972aab2 DG |
951 | /* Flag success of metadata dump. */ |
952 | chan->metadata_dumped = 1; | |
d0b96690 | 953 | |
e4589ae2 | 954 | return 0; |
d0b96690 DG |
955 | } |
956 | ||
957 | static | |
958 | int _lttng_stream_packet_context_declare(struct ust_registry_session *session) | |
959 | { | |
960 | return lttng_metadata_printf(session, | |
961 | "struct packet_context {\n" | |
962 | " uint64_clock_monotonic_t timestamp_begin;\n" | |
963 | " uint64_clock_monotonic_t timestamp_end;\n" | |
964 | " uint64_t content_size;\n" | |
965 | " uint64_t packet_size;\n" | |
0793bcc6 | 966 | " uint64_t packet_seq_num;\n" |
d0b96690 DG |
967 | " unsigned long events_discarded;\n" |
968 | " uint32_t cpu_id;\n" | |
969 | "};\n\n" | |
970 | ); | |
971 | } | |
972 | ||
973 | /* | |
974 | * Compact header: | |
975 | * id: range: 0 - 30. | |
976 | * id 31 is reserved to indicate an extended header. | |
977 | * | |
978 | * Large header: | |
979 | * id: range: 0 - 65534. | |
980 | * id 65535 is reserved to indicate an extended header. | |
981 | */ | |
982 | static | |
983 | int _lttng_event_header_declare(struct ust_registry_session *session) | |
984 | { | |
985 | return lttng_metadata_printf(session, | |
986 | "struct event_header_compact {\n" | |
987 | " enum : uint5_t { compact = 0 ... 30, extended = 31 } id;\n" | |
988 | " variant <id> {\n" | |
989 | " struct {\n" | |
990 | " uint27_clock_monotonic_t timestamp;\n" | |
991 | " } compact;\n" | |
992 | " struct {\n" | |
993 | " uint32_t id;\n" | |
994 | " uint64_clock_monotonic_t timestamp;\n" | |
995 | " } extended;\n" | |
996 | " } v;\n" | |
997 | "} align(%u);\n" | |
998 | "\n" | |
999 | "struct event_header_large {\n" | |
1000 | " enum : uint16_t { compact = 0 ... 65534, extended = 65535 } id;\n" | |
1001 | " variant <id> {\n" | |
1002 | " struct {\n" | |
1003 | " uint32_clock_monotonic_t timestamp;\n" | |
1004 | " } compact;\n" | |
1005 | " struct {\n" | |
1006 | " uint32_t id;\n" | |
1007 | " uint64_clock_monotonic_t timestamp;\n" | |
1008 | " } extended;\n" | |
1009 | " } v;\n" | |
1010 | "} align(%u);\n\n", | |
1011 | session->uint32_t_alignment, | |
1012 | session->uint16_t_alignment | |
1013 | ); | |
1014 | } | |
1015 | ||
dc113ec7 MD |
1016 | /* |
1017 | * The offset between monotonic and realtime clock can be negative if | |
1018 | * the system sets the REALTIME clock to 0 after boot. | |
dc113ec7 | 1019 | */ |
d0b96690 | 1020 | static |
8c645bb0 | 1021 | int measure_single_clock_offset(struct offset_sample *sample) |
d0b96690 | 1022 | { |
dc113ec7 | 1023 | uint64_t monotonic_avg, monotonic[2], measure_delta, realtime; |
fc0bb9fa | 1024 | uint64_t tcf = trace_clock_freq(); |
d0b96690 DG |
1025 | struct timespec rts = { 0, 0 }; |
1026 | int ret; | |
1027 | ||
1028 | monotonic[0] = trace_clock_read64(); | |
389fbf04 | 1029 | ret = lttng_clock_gettime(CLOCK_REALTIME, &rts); |
8c645bb0 MD |
1030 | if (ret < 0) { |
1031 | return ret; | |
1032 | } | |
d0b96690 | 1033 | monotonic[1] = trace_clock_read64(); |
8c645bb0 MD |
1034 | measure_delta = monotonic[1] - monotonic[0]; |
1035 | if (measure_delta > sample->measure_delta) { | |
1036 | /* | |
1037 | * Discard value if it took longer to read than the best | |
1038 | * sample so far. | |
1039 | */ | |
1040 | return 0; | |
1041 | } | |
dc113ec7 | 1042 | monotonic_avg = (monotonic[0] + monotonic[1]) >> 1; |
6e1b0543 MD |
1043 | realtime = (uint64_t) rts.tv_sec * tcf; |
1044 | if (tcf == NSEC_PER_SEC) { | |
1045 | realtime += rts.tv_nsec; | |
1046 | } else { | |
1047 | realtime += (uint64_t) rts.tv_nsec * tcf / NSEC_PER_SEC; | |
fc0bb9fa | 1048 | } |
c2636b57 | 1049 | sample->offset = (int64_t) realtime - monotonic_avg; |
8c645bb0 MD |
1050 | sample->measure_delta = measure_delta; |
1051 | return 0; | |
d0b96690 DG |
1052 | } |
1053 | ||
8c645bb0 MD |
1054 | /* |
1055 | * Approximation of NTP time of day to clock monotonic correlation, | |
1056 | * taken at start of trace. Keep the measurement that took the less time | |
1057 | * to complete, thus removing imprecision caused by preemption. | |
c2636b57 | 1058 | * May return a negative offset. |
8c645bb0 MD |
1059 | */ |
1060 | static | |
c2636b57 | 1061 | int64_t measure_clock_offset(void) |
8c645bb0 MD |
1062 | { |
1063 | int i; | |
1064 | struct offset_sample offset_best_sample = { | |
1065 | .offset = 0, | |
1066 | .measure_delta = UINT64_MAX, | |
1067 | }; | |
1068 | ||
1069 | for (i = 0; i < NR_CLOCK_OFFSET_SAMPLES; i++) { | |
1070 | if (measure_single_clock_offset(&offset_best_sample)) { | |
1071 | return 0; | |
1072 | } | |
1073 | } | |
1074 | return offset_best_sample.offset; | |
1075 | } | |
d0b96690 | 1076 | |
8de88061 JR |
1077 | static |
1078 | int print_metadata_session_information(struct ust_registry_session *registry) | |
1079 | { | |
1080 | int ret; | |
1081 | struct ltt_session *session = NULL; | |
1082 | char creation_datetime[ISO8601_STR_LEN]; | |
1083 | ||
1084 | rcu_read_lock(); | |
1085 | session = session_find_by_id(registry->tracing_id); | |
1086 | if (!session) { | |
1087 | ret = -1; | |
1088 | goto error; | |
1089 | } | |
1090 | ||
1091 | /* Print the trace name */ | |
1092 | ret = lttng_metadata_printf(registry, " trace_name = \""); | |
1093 | if (ret) { | |
1094 | goto error; | |
1095 | } | |
1096 | ||
1097 | /* | |
1098 | * This is necessary since the creation time is present in the session | |
1099 | * name when it is generated. | |
1100 | */ | |
1101 | if (session->has_auto_generated_name) { | |
1102 | ret = print_escaped_ctf_string(registry, DEFAULT_SESSION_NAME); | |
1103 | } else { | |
1104 | ret = print_escaped_ctf_string(registry, session->name); | |
1105 | } | |
1106 | if (ret) { | |
1107 | goto error; | |
1108 | } | |
1109 | ||
1110 | ret = lttng_metadata_printf(registry, "\";\n"); | |
1111 | if (ret) { | |
1112 | goto error; | |
1113 | } | |
1114 | ||
1115 | /* Prepare creation time */ | |
1116 | ret = time_to_iso8601_str(session->creation_time, creation_datetime, | |
1117 | sizeof(creation_datetime)); | |
1118 | if (ret) { | |
1119 | goto error; | |
1120 | } | |
1121 | ||
1122 | /* Output the reste of the information */ | |
1123 | ret = lttng_metadata_printf(registry, | |
1124 | " trace_creation_datetime = \"%s\";\n" | |
1125 | " hostname = \"%s\";\n", | |
1126 | creation_datetime, session->hostname); | |
1127 | if (ret) { | |
1128 | goto error; | |
1129 | } | |
1130 | ||
1131 | error: | |
1132 | if (session) { | |
1133 | session_put(session); | |
1134 | } | |
1135 | rcu_read_unlock(); | |
1136 | return ret; | |
1137 | } | |
1138 | ||
1139 | static | |
1140 | int print_metadata_app_information(struct ust_registry_session *registry, | |
1141 | struct ust_app *app) | |
1142 | { | |
1143 | int ret; | |
1144 | char datetime[ISO8601_STR_LEN]; | |
1145 | ||
1146 | if (!app) { | |
1147 | ret = 0; | |
1148 | goto end; | |
1149 | } | |
1150 | ||
1151 | ret = time_to_iso8601_str( | |
1152 | app->registration_time, datetime, sizeof(datetime)); | |
1153 | if (ret) { | |
1154 | goto end; | |
1155 | } | |
1156 | ||
1157 | ret = lttng_metadata_printf(registry, | |
1158 | " tracer_patchlevel = %u;\n" | |
1159 | " vpid = %d;\n" | |
1160 | " procname = \"%s\";\n" | |
1161 | " vpid_datetime = \"%s\";\n", | |
1162 | app->version.patchlevel, (int) app->pid, app->name, | |
1163 | datetime); | |
1164 | ||
1165 | end: | |
1166 | return ret; | |
1167 | } | |
1168 | ||
d0b96690 DG |
1169 | /* |
1170 | * Should be called with session registry mutex held. | |
1171 | */ | |
1172 | int ust_metadata_session_statedump(struct ust_registry_session *session, | |
af6142cf MD |
1173 | struct ust_app *app, |
1174 | uint32_t major, | |
1175 | uint32_t minor) | |
d0b96690 | 1176 | { |
c70636a7 MJ |
1177 | char uuid_s[LTTNG_UUID_STR_LEN], |
1178 | clock_uuid_s[LTTNG_UUID_STR_LEN]; | |
d0b96690 | 1179 | int ret = 0; |
d0b96690 | 1180 | |
a0377dfe | 1181 | LTTNG_ASSERT(session); |
7972aab2 | 1182 | |
c8e0c5f5 | 1183 | lttng_uuid_to_str(session->uuid, uuid_s); |
d0b96690 | 1184 | |
d7ba1388 MD |
1185 | /* For crash ABI */ |
1186 | ret = lttng_metadata_printf(session, | |
1187 | "/* CTF %u.%u */\n\n", | |
1188 | CTF_SPEC_MAJOR, | |
1189 | CTF_SPEC_MINOR); | |
1190 | if (ret) { | |
1191 | goto end; | |
1192 | } | |
1193 | ||
d0b96690 DG |
1194 | ret = lttng_metadata_printf(session, |
1195 | "typealias integer { size = 8; align = %u; signed = false; } := uint8_t;\n" | |
1196 | "typealias integer { size = 16; align = %u; signed = false; } := uint16_t;\n" | |
1197 | "typealias integer { size = 32; align = %u; signed = false; } := uint32_t;\n" | |
1198 | "typealias integer { size = 64; align = %u; signed = false; } := uint64_t;\n" | |
1199 | "typealias integer { size = %u; align = %u; signed = false; } := unsigned long;\n" | |
1200 | "typealias integer { size = 5; align = 1; signed = false; } := uint5_t;\n" | |
1201 | "typealias integer { size = 27; align = 1; signed = false; } := uint27_t;\n" | |
1202 | "\n" | |
1203 | "trace {\n" | |
1204 | " major = %u;\n" | |
1205 | " minor = %u;\n" | |
1206 | " uuid = \"%s\";\n" | |
1207 | " byte_order = %s;\n" | |
1208 | " packet.header := struct {\n" | |
1209 | " uint32_t magic;\n" | |
1210 | " uint8_t uuid[16];\n" | |
1211 | " uint32_t stream_id;\n" | |
0793bcc6 | 1212 | " uint64_t stream_instance_id;\n" |
d0b96690 DG |
1213 | " };\n" |
1214 | "};\n\n", | |
1215 | session->uint8_t_alignment, | |
1216 | session->uint16_t_alignment, | |
1217 | session->uint32_t_alignment, | |
1218 | session->uint64_t_alignment, | |
1219 | session->bits_per_long, | |
1220 | session->long_alignment, | |
1221 | CTF_SPEC_MAJOR, | |
1222 | CTF_SPEC_MINOR, | |
1223 | uuid_s, | |
1224 | session->byte_order == BIG_ENDIAN ? "be" : "le" | |
1225 | ); | |
0d32d1a9 | 1226 | if (ret) { |
d0b96690 | 1227 | goto end; |
0d32d1a9 | 1228 | } |
d0b96690 | 1229 | |
d0b96690 DG |
1230 | ret = lttng_metadata_printf(session, |
1231 | "env {\n" | |
d0b96690 DG |
1232 | " domain = \"ust\";\n" |
1233 | " tracer_name = \"lttng-ust\";\n" | |
1234 | " tracer_major = %u;\n" | |
8de88061 JR |
1235 | " tracer_minor = %u;\n" |
1236 | " tracer_buffering_scheme = \"%s\";\n" | |
1237 | " tracer_buffering_id = %u;\n" | |
1238 | " architecture_bit_width = %u;\n", | |
af6142cf | 1239 | major, |
8de88061 JR |
1240 | minor, |
1241 | app ? "pid" : "uid", | |
1242 | app ? (int) app->pid : (int) session->tracing_uid, | |
1243 | session->bits_per_long); | |
1244 | if (ret) { | |
1245 | goto end; | |
1246 | } | |
1247 | ||
1248 | ret = print_metadata_session_information(session); | |
1249 | if (ret) { | |
d0b96690 | 1250 | goto end; |
8de88061 | 1251 | } |
d0b96690 DG |
1252 | |
1253 | /* | |
1254 | * If per-application registry, we can output extra information | |
1255 | * about the application. | |
1256 | */ | |
8de88061 JR |
1257 | ret = print_metadata_app_information(session, app); |
1258 | if (ret) { | |
1259 | goto end; | |
d0b96690 DG |
1260 | } |
1261 | ||
1262 | ret = lttng_metadata_printf(session, | |
1263 | "};\n\n" | |
1264 | ); | |
0d32d1a9 | 1265 | if (ret) { |
d0b96690 | 1266 | goto end; |
0d32d1a9 | 1267 | } |
d0b96690 DG |
1268 | |
1269 | ret = lttng_metadata_printf(session, | |
1270 | "clock {\n" | |
fc0bb9fa MD |
1271 | " name = \"%s\";\n", |
1272 | trace_clock_name() | |
d0b96690 | 1273 | ); |
0d32d1a9 | 1274 | if (ret) { |
d0b96690 | 1275 | goto end; |
0d32d1a9 | 1276 | } |
d0b96690 DG |
1277 | |
1278 | if (!trace_clock_uuid(clock_uuid_s)) { | |
1279 | ret = lttng_metadata_printf(session, | |
1280 | " uuid = \"%s\";\n", | |
1281 | clock_uuid_s | |
1282 | ); | |
0d32d1a9 | 1283 | if (ret) { |
d0b96690 | 1284 | goto end; |
0d32d1a9 | 1285 | } |
d0b96690 DG |
1286 | } |
1287 | ||
1288 | ret = lttng_metadata_printf(session, | |
fc0bb9fa | 1289 | " description = \"%s\";\n" |
d0b96690 DG |
1290 | " freq = %" PRIu64 "; /* Frequency, in Hz */\n" |
1291 | " /* clock value offset from Epoch is: offset * (1/freq) */\n" | |
c2636b57 | 1292 | " offset = %" PRId64 ";\n" |
d0b96690 | 1293 | "};\n\n", |
fc0bb9fa | 1294 | trace_clock_description(), |
d0b96690 DG |
1295 | trace_clock_freq(), |
1296 | measure_clock_offset() | |
1297 | ); | |
0d32d1a9 | 1298 | if (ret) { |
d0b96690 | 1299 | goto end; |
0d32d1a9 | 1300 | } |
d0b96690 DG |
1301 | |
1302 | ret = lttng_metadata_printf(session, | |
1303 | "typealias integer {\n" | |
1304 | " size = 27; align = 1; signed = false;\n" | |
fc0bb9fa | 1305 | " map = clock.%s.value;\n" |
d0b96690 DG |
1306 | "} := uint27_clock_monotonic_t;\n" |
1307 | "\n" | |
1308 | "typealias integer {\n" | |
1309 | " size = 32; align = %u; signed = false;\n" | |
fc0bb9fa | 1310 | " map = clock.%s.value;\n" |
d0b96690 DG |
1311 | "} := uint32_clock_monotonic_t;\n" |
1312 | "\n" | |
1313 | "typealias integer {\n" | |
1314 | " size = 64; align = %u; signed = false;\n" | |
fc0bb9fa | 1315 | " map = clock.%s.value;\n" |
d0b96690 | 1316 | "} := uint64_clock_monotonic_t;\n\n", |
fc0bb9fa | 1317 | trace_clock_name(), |
d0b96690 | 1318 | session->uint32_t_alignment, |
fc0bb9fa MD |
1319 | trace_clock_name(), |
1320 | session->uint64_t_alignment, | |
1321 | trace_clock_name() | |
d0b96690 | 1322 | ); |
0d32d1a9 | 1323 | if (ret) { |
d0b96690 | 1324 | goto end; |
0d32d1a9 | 1325 | } |
d0b96690 DG |
1326 | |
1327 | ret = _lttng_stream_packet_context_declare(session); | |
0d32d1a9 | 1328 | if (ret) { |
d0b96690 | 1329 | goto end; |
0d32d1a9 | 1330 | } |
d0b96690 DG |
1331 | |
1332 | ret = _lttng_event_header_declare(session); | |
0d32d1a9 | 1333 | if (ret) { |
d0b96690 | 1334 | goto end; |
0d32d1a9 | 1335 | } |
d0b96690 DG |
1336 | |
1337 | end: | |
1338 | return ret; | |
1339 | } |