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> | |
16 | #include <common/common.h> | |
395d6b02 | 17 | #include <common/time.h> |
d0b96690 DG |
18 | |
19 | #include "ust-registry.h" | |
20 | #include "ust-clock.h" | |
21 | #include "ust-app.h" | |
22 | ||
23 | #ifndef max_t | |
24 | #define max_t(type, a, b) ((type) ((a) > (b) ? (a) : (b))) | |
25 | #endif | |
26 | ||
8c645bb0 MD |
27 | #define NR_CLOCK_OFFSET_SAMPLES 10 |
28 | ||
29 | struct offset_sample { | |
c2636b57 | 30 | int64_t offset; /* correlation offset */ |
8c645bb0 MD |
31 | uint64_t measure_delta; /* lower is better */ |
32 | }; | |
33 | ||
da860cab MD |
34 | static |
35 | int _lttng_field_statedump(struct ust_registry_session *session, | |
36 | const struct ustctl_field *fields, size_t nr_fields, | |
37 | size_t *iter_field, size_t nesting); | |
38 | ||
d0b96690 DG |
39 | static inline |
40 | int get_count_order(unsigned int count) | |
41 | { | |
42 | int order; | |
43 | ||
78ddfe55 | 44 | order = lttng_fls(count) - 1; |
46b4dda6 | 45 | if (count & (count - 1)) { |
d0b96690 | 46 | order++; |
46b4dda6 JG |
47 | } |
48 | assert(order >= 0); | |
d0b96690 DG |
49 | return order; |
50 | } | |
51 | ||
52 | /* | |
53 | * Returns offset where to write in metadata array, or negative error value on error. | |
54 | */ | |
55 | static | |
56 | ssize_t metadata_reserve(struct ust_registry_session *session, size_t len) | |
57 | { | |
58 | size_t new_len = session->metadata_len + len; | |
59 | size_t new_alloc_len = new_len; | |
60 | size_t old_alloc_len = session->metadata_alloc_len; | |
61 | ssize_t ret; | |
62 | ||
63 | if (new_alloc_len > (UINT32_MAX >> 1)) | |
64 | return -EINVAL; | |
65 | if ((old_alloc_len << 1) > (UINT32_MAX >> 1)) | |
66 | return -EINVAL; | |
67 | ||
68 | if (new_alloc_len > old_alloc_len) { | |
69 | char *newptr; | |
70 | ||
71 | new_alloc_len = | |
72 | max_t(size_t, 1U << get_count_order(new_alloc_len), old_alloc_len << 1); | |
73 | newptr = realloc(session->metadata, new_alloc_len); | |
74 | if (!newptr) | |
75 | return -ENOMEM; | |
76 | session->metadata = newptr; | |
77 | /* We zero directly the memory from start of allocation. */ | |
78 | memset(&session->metadata[old_alloc_len], 0, new_alloc_len - old_alloc_len); | |
79 | session->metadata_alloc_len = new_alloc_len; | |
80 | } | |
81 | ret = session->metadata_len; | |
82 | session->metadata_len += len; | |
83 | return ret; | |
84 | } | |
85 | ||
d7ba1388 MD |
86 | static |
87 | int metadata_file_append(struct ust_registry_session *session, | |
88 | const char *str, size_t len) | |
89 | { | |
90 | ssize_t written; | |
91 | ||
92 | if (session->metadata_fd < 0) { | |
93 | return 0; | |
94 | } | |
95 | /* Write to metadata file */ | |
96 | written = lttng_write(session->metadata_fd, str, len); | |
97 | if (written != len) { | |
98 | return -1; | |
99 | } | |
100 | return 0; | |
101 | } | |
102 | ||
d0b96690 DG |
103 | /* |
104 | * We have exclusive access to our metadata buffer (protected by the | |
105 | * ust_lock), so we can do racy operations such as looking for | |
106 | * remaining space left in packet and write, since mutual exclusion | |
107 | * protects us from concurrent writes. | |
108 | */ | |
109 | static | |
110 | int lttng_metadata_printf(struct ust_registry_session *session, | |
111 | const char *fmt, ...) | |
112 | { | |
113 | char *str = NULL; | |
114 | size_t len; | |
115 | va_list ap; | |
116 | ssize_t offset; | |
117 | int ret; | |
118 | ||
119 | va_start(ap, fmt); | |
120 | ret = vasprintf(&str, fmt, ap); | |
121 | va_end(ap); | |
122 | if (ret < 0) | |
123 | return -ENOMEM; | |
124 | ||
125 | len = strlen(str); | |
126 | offset = metadata_reserve(session, len); | |
127 | if (offset < 0) { | |
128 | ret = offset; | |
129 | goto end; | |
130 | } | |
131 | memcpy(&session->metadata[offset], str, len); | |
d7ba1388 MD |
132 | ret = metadata_file_append(session, str, len); |
133 | if (ret) { | |
134 | PERROR("Error appending to metadata file"); | |
135 | goto end; | |
136 | } | |
d0b96690 DG |
137 | DBG3("Append to metadata: \"%s\"", str); |
138 | ret = 0; | |
139 | ||
140 | end: | |
141 | free(str); | |
142 | return ret; | |
143 | } | |
144 | ||
da860cab MD |
145 | static |
146 | int print_tabs(struct ust_registry_session *session, size_t nesting) | |
147 | { | |
148 | size_t i; | |
149 | ||
150 | for (i = 0; i < nesting; i++) { | |
151 | int ret; | |
152 | ||
153 | ret = lttng_metadata_printf(session, " "); | |
154 | if (ret) { | |
155 | return ret; | |
156 | } | |
157 | } | |
158 | return 0; | |
159 | } | |
160 | ||
a1f68b22 MD |
161 | static |
162 | void sanitize_ctf_identifier(char *out, const char *in) | |
163 | { | |
164 | size_t i; | |
165 | ||
166 | for (i = 0; i < LTTNG_UST_SYM_NAME_LEN; i++) { | |
167 | switch (in[i]) { | |
168 | case '.': | |
169 | case '$': | |
170 | case ':': | |
171 | out[i] = '_'; | |
172 | break; | |
173 | default: | |
174 | out[i] = in[i]; | |
175 | } | |
176 | } | |
177 | } | |
178 | ||
8de88061 JR |
179 | static |
180 | int print_escaped_ctf_string(struct ust_registry_session *session, const char *string) | |
181 | { | |
35c829f8 | 182 | int ret = 0; |
8de88061 JR |
183 | size_t i; |
184 | char cur; | |
185 | ||
186 | i = 0; | |
187 | cur = string[i]; | |
188 | while (cur != '\0') { | |
189 | switch (cur) { | |
190 | case '\n': | |
191 | ret = lttng_metadata_printf(session, "%s", "\\n"); | |
192 | break; | |
193 | case '\\': | |
194 | case '"': | |
195 | ret = lttng_metadata_printf(session, "%c", '\\'); | |
196 | if (ret) { | |
197 | goto error; | |
198 | } | |
199 | /* We still print the current char */ | |
200 | /* Fallthrough */ | |
201 | default: | |
202 | ret = lttng_metadata_printf(session, "%c", cur); | |
203 | break; | |
204 | } | |
205 | ||
206 | if (ret) { | |
207 | goto error; | |
208 | } | |
209 | ||
210 | cur = string[++i]; | |
211 | } | |
212 | error: | |
213 | return ret; | |
214 | } | |
215 | ||
10b56aef MD |
216 | /* Called with session registry mutex held. */ |
217 | static | |
218 | int ust_metadata_enum_statedump(struct ust_registry_session *session, | |
219 | const char *enum_name, | |
220 | uint64_t enum_id, | |
221 | const struct ustctl_integer_type *container_type, | |
da860cab | 222 | const char *field_name, size_t *iter_field, size_t nesting) |
10b56aef MD |
223 | { |
224 | struct ust_registry_enum *reg_enum; | |
225 | const struct ustctl_enum_entry *entries; | |
226 | size_t nr_entries; | |
227 | int ret = 0; | |
228 | size_t i; | |
a1f68b22 | 229 | char identifier[LTTNG_UST_SYM_NAME_LEN]; |
10b56aef MD |
230 | |
231 | rcu_read_lock(); | |
232 | reg_enum = ust_registry_lookup_enum_by_id(session, enum_name, enum_id); | |
233 | rcu_read_unlock(); | |
234 | /* reg_enum can still be used because session registry mutex is held. */ | |
235 | if (!reg_enum) { | |
236 | ret = -ENOENT; | |
237 | goto end; | |
238 | } | |
239 | entries = reg_enum->entries; | |
240 | nr_entries = reg_enum->nr_entries; | |
241 | ||
da860cab MD |
242 | ret = print_tabs(session, nesting); |
243 | if (ret) { | |
244 | goto end; | |
245 | } | |
10b56aef | 246 | ret = lttng_metadata_printf(session, |
da860cab | 247 | "enum : integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u; } {\n", |
10b56aef MD |
248 | container_type->size, |
249 | container_type->alignment, | |
250 | container_type->signedness, | |
251 | (container_type->encoding == ustctl_encode_none) | |
252 | ? "none" | |
253 | : (container_type->encoding == ustctl_encode_UTF8) | |
254 | ? "UTF8" | |
255 | : "ASCII", | |
256 | container_type->base); | |
257 | if (ret) { | |
258 | goto end; | |
259 | } | |
1ddb0e8a | 260 | nesting++; |
10b56aef MD |
261 | /* Dump all entries */ |
262 | for (i = 0; i < nr_entries; i++) { | |
263 | const struct ustctl_enum_entry *entry = &entries[i]; | |
264 | int j, len; | |
265 | ||
a1f68b22 MD |
266 | ret = print_tabs(session, nesting); |
267 | if (ret) { | |
268 | goto end; | |
269 | } | |
10b56aef | 270 | ret = lttng_metadata_printf(session, |
a1f68b22 | 271 | "\""); |
10b56aef MD |
272 | if (ret) { |
273 | goto end; | |
274 | } | |
275 | len = strlen(entry->string); | |
276 | /* Escape the character '"' */ | |
277 | for (j = 0; j < len; j++) { | |
278 | char c = entry->string[j]; | |
279 | ||
280 | switch (c) { | |
281 | case '"': | |
282 | ret = lttng_metadata_printf(session, | |
283 | "\\\""); | |
284 | break; | |
285 | case '\\': | |
286 | ret = lttng_metadata_printf(session, | |
287 | "\\\\"); | |
288 | break; | |
289 | default: | |
290 | ret = lttng_metadata_printf(session, | |
291 | "%c", c); | |
292 | break; | |
293 | } | |
294 | if (ret) { | |
295 | goto end; | |
296 | } | |
297 | } | |
e85e3723 | 298 | ret = lttng_metadata_printf(session, "\""); |
10b56aef MD |
299 | if (ret) { |
300 | goto end; | |
301 | } | |
3b016e58 | 302 | |
9d27cec7 PP |
303 | if (entry->u.extra.options & |
304 | USTCTL_UST_ENUM_ENTRY_OPTION_IS_AUTO) { | |
e85e3723 PP |
305 | ret = lttng_metadata_printf(session, ",\n"); |
306 | if (ret) { | |
307 | goto end; | |
308 | } | |
10b56aef MD |
309 | } else { |
310 | ret = lttng_metadata_printf(session, | |
e85e3723 PP |
311 | " = "); |
312 | if (ret) { | |
313 | goto end; | |
314 | } | |
3b016e58 | 315 | |
e85e3723 | 316 | if (entry->start.signedness) { |
3b016e58 | 317 | ret = lttng_metadata_printf(session, |
e85e3723 | 318 | "%lld", (long long) entry->start.value); |
3b016e58 MD |
319 | } else { |
320 | ret = lttng_metadata_printf(session, | |
e85e3723 PP |
321 | "%llu", entry->start.value); |
322 | } | |
323 | if (ret) { | |
324 | goto end; | |
325 | } | |
326 | ||
327 | if (entry->start.signedness == entry->end.signedness && | |
328 | entry->start.value == | |
329 | entry->end.value) { | |
330 | ret = lttng_metadata_printf(session, ",\n"); | |
331 | } else { | |
332 | if (entry->end.signedness) { | |
333 | ret = lttng_metadata_printf(session, | |
334 | " ... %lld,\n", | |
335 | (long long) entry->end.value); | |
336 | } else { | |
337 | ret = lttng_metadata_printf(session, | |
338 | " ... %llu,\n", | |
339 | entry->end.value); | |
340 | } | |
341 | } | |
342 | if (ret) { | |
343 | goto end; | |
3b016e58 | 344 | } |
10b56aef MD |
345 | } |
346 | } | |
1ddb0e8a | 347 | nesting--; |
a1f68b22 MD |
348 | sanitize_ctf_identifier(identifier, field_name); |
349 | ret = print_tabs(session, nesting); | |
350 | if (ret) { | |
351 | goto end; | |
352 | } | |
353 | ret = lttng_metadata_printf(session, "} _%s;\n", | |
354 | identifier); | |
da860cab MD |
355 | end: |
356 | (*iter_field)++; | |
357 | return ret; | |
358 | } | |
359 | ||
da860cab MD |
360 | static |
361 | int _lttng_variant_statedump(struct ust_registry_session *session, | |
0d32d1a9 MD |
362 | uint32_t nr_choices, const char *tag_name, |
363 | uint32_t alignment, | |
da860cab MD |
364 | const struct ustctl_field *fields, size_t nr_fields, |
365 | size_t *iter_field, size_t nesting) | |
366 | { | |
367 | const struct ustctl_field *variant = &fields[*iter_field]; | |
0d32d1a9 | 368 | uint32_t i; |
da860cab | 369 | int ret; |
a1f68b22 | 370 | char identifier[LTTNG_UST_SYM_NAME_LEN]; |
da860cab MD |
371 | |
372 | if (variant->type.atype != ustctl_atype_variant) { | |
373 | ret = -EINVAL; | |
374 | goto end; | |
375 | } | |
da860cab | 376 | (*iter_field)++; |
0d32d1a9 MD |
377 | sanitize_ctf_identifier(identifier, tag_name); |
378 | if (alignment) { | |
379 | ret = print_tabs(session, nesting); | |
380 | if (ret) { | |
381 | goto end; | |
382 | } | |
383 | ret = lttng_metadata_printf(session, | |
384 | "struct { } align(%u) _%s_padding;\n", | |
385 | alignment * CHAR_BIT, | |
386 | variant->name); | |
387 | if (ret) { | |
388 | goto end; | |
389 | } | |
390 | } | |
a1f68b22 MD |
391 | ret = print_tabs(session, nesting); |
392 | if (ret) { | |
393 | goto end; | |
394 | } | |
da860cab | 395 | ret = lttng_metadata_printf(session, |
a1f68b22 MD |
396 | "variant <_%s> {\n", |
397 | identifier); | |
da860cab MD |
398 | if (ret) { |
399 | goto end; | |
400 | } | |
401 | ||
402 | for (i = 0; i < nr_choices; i++) { | |
403 | if (*iter_field >= nr_fields) { | |
404 | ret = -EOVERFLOW; | |
405 | goto end; | |
406 | } | |
407 | ret = _lttng_field_statedump(session, | |
408 | fields, nr_fields, | |
409 | iter_field, nesting + 1); | |
dc6403f3 JG |
410 | if (ret) { |
411 | goto end; | |
412 | } | |
da860cab | 413 | } |
a1f68b22 MD |
414 | sanitize_ctf_identifier(identifier, variant->name); |
415 | ret = print_tabs(session, nesting); | |
850c5d4a JR |
416 | if (ret) { |
417 | goto end; | |
418 | } | |
da860cab | 419 | ret = lttng_metadata_printf(session, |
a1f68b22 MD |
420 | "} _%s;\n", |
421 | identifier); | |
da860cab MD |
422 | if (ret) { |
423 | goto end; | |
424 | } | |
10b56aef MD |
425 | end: |
426 | return ret; | |
427 | } | |
428 | ||
d0b96690 DG |
429 | static |
430 | int _lttng_field_statedump(struct ust_registry_session *session, | |
da860cab MD |
431 | const struct ustctl_field *fields, size_t nr_fields, |
432 | size_t *iter_field, size_t nesting) | |
d0b96690 DG |
433 | { |
434 | int ret = 0; | |
435 | const char *bo_be = " byte_order = be;"; | |
436 | const char *bo_le = " byte_order = le;"; | |
437 | const char *bo_native = ""; | |
438 | const char *bo_reverse; | |
da860cab | 439 | const struct ustctl_field *field; |
d0b96690 | 440 | |
da860cab MD |
441 | if (*iter_field >= nr_fields) { |
442 | ret = -EOVERFLOW; | |
443 | goto end; | |
444 | } | |
445 | field = &fields[*iter_field]; | |
446 | ||
447 | if (session->byte_order == BIG_ENDIAN) { | |
d0b96690 | 448 | bo_reverse = bo_le; |
da860cab | 449 | } else { |
d0b96690 | 450 | bo_reverse = bo_be; |
da860cab | 451 | } |
d0b96690 DG |
452 | |
453 | switch (field->type.atype) { | |
454 | case ustctl_atype_integer: | |
da860cab MD |
455 | ret = print_tabs(session, nesting); |
456 | if (ret) { | |
457 | goto end; | |
458 | } | |
d0b96690 | 459 | ret = lttng_metadata_printf(session, |
da860cab | 460 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s;\n", |
0d32d1a9 MD |
461 | field->type.u.integer.size, |
462 | field->type.u.integer.alignment, | |
463 | field->type.u.integer.signedness, | |
464 | (field->type.u.integer.encoding == ustctl_encode_none) | |
d0b96690 | 465 | ? "none" |
0d32d1a9 | 466 | : (field->type.u.integer.encoding == ustctl_encode_UTF8) |
d0b96690 DG |
467 | ? "UTF8" |
468 | : "ASCII", | |
0d32d1a9 MD |
469 | field->type.u.integer.base, |
470 | field->type.u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
d0b96690 | 471 | field->name); |
da860cab | 472 | (*iter_field)++; |
d0b96690 | 473 | break; |
10b56aef MD |
474 | case ustctl_atype_enum: |
475 | ret = ust_metadata_enum_statedump(session, | |
0d32d1a9 MD |
476 | field->type.u.legacy.basic.enumeration.name, |
477 | field->type.u.legacy.basic.enumeration.id, | |
478 | &field->type.u.legacy.basic.enumeration.container_type, | |
da860cab | 479 | field->name, iter_field, nesting); |
10b56aef | 480 | break; |
d0b96690 | 481 | case ustctl_atype_float: |
da860cab MD |
482 | ret = print_tabs(session, nesting); |
483 | if (ret) { | |
484 | goto end; | |
485 | } | |
d0b96690 | 486 | ret = lttng_metadata_printf(session, |
da860cab | 487 | "floating_point { exp_dig = %u; mant_dig = %u; align = %u;%s } _%s;\n", |
0d32d1a9 MD |
488 | field->type.u._float.exp_dig, |
489 | field->type.u._float.mant_dig, | |
490 | field->type.u._float.alignment, | |
491 | field->type.u._float.reverse_byte_order ? bo_reverse : bo_native, | |
d0b96690 | 492 | field->name); |
da860cab | 493 | (*iter_field)++; |
d0b96690 | 494 | break; |
d0b96690 DG |
495 | case ustctl_atype_array: |
496 | { | |
497 | const struct ustctl_basic_type *elem_type; | |
498 | ||
da860cab MD |
499 | ret = print_tabs(session, nesting); |
500 | if (ret) { | |
501 | goto end; | |
502 | } | |
0d32d1a9 MD |
503 | elem_type = &field->type.u.legacy.array.elem_type; |
504 | /* Only integers are currently supported in arrays. */ | |
505 | if (elem_type->atype != ustctl_atype_integer) { | |
506 | ret = -EINVAL; | |
507 | goto end; | |
508 | } | |
d0b96690 | 509 | ret = lttng_metadata_printf(session, |
da860cab | 510 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n", |
d0b96690 DG |
511 | elem_type->u.basic.integer.size, |
512 | elem_type->u.basic.integer.alignment, | |
513 | elem_type->u.basic.integer.signedness, | |
514 | (elem_type->u.basic.integer.encoding == ustctl_encode_none) | |
515 | ? "none" | |
516 | : (elem_type->u.basic.integer.encoding == ustctl_encode_UTF8) | |
517 | ? "UTF8" | |
518 | : "ASCII", | |
519 | elem_type->u.basic.integer.base, | |
520 | elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
0d32d1a9 MD |
521 | field->name, field->type.u.legacy.array.length); |
522 | (*iter_field)++; | |
523 | break; | |
524 | } | |
525 | case ustctl_atype_array_nestable: | |
526 | { | |
527 | uint32_t array_length; | |
528 | const struct ustctl_field *array_nestable; | |
529 | const struct ustctl_type *elem_type; | |
530 | ||
531 | array_length = field->type.u.array_nestable.length; | |
532 | (*iter_field)++; | |
533 | ||
534 | if (*iter_field >= nr_fields) { | |
535 | ret = -EOVERFLOW; | |
536 | goto end; | |
537 | } | |
538 | array_nestable = &fields[*iter_field]; | |
539 | elem_type = &array_nestable->type; | |
540 | ||
541 | /* Only integers are currently supported in arrays. */ | |
542 | if (elem_type->atype != ustctl_atype_integer) { | |
543 | ret = -EINVAL; | |
544 | goto end; | |
545 | } | |
546 | ||
547 | if (field->type.u.array_nestable.alignment) { | |
548 | ret = print_tabs(session, nesting); | |
549 | if (ret) { | |
550 | goto end; | |
551 | } | |
552 | ret = lttng_metadata_printf(session, | |
553 | "struct { } align(%u) _%s_padding;\n", | |
554 | field->type.u.array_nestable.alignment * CHAR_BIT, | |
555 | field->name); | |
556 | if (ret) { | |
557 | goto end; | |
558 | } | |
559 | } | |
560 | ||
561 | ret = print_tabs(session, nesting); | |
562 | if (ret) { | |
563 | goto end; | |
564 | } | |
565 | ret = lttng_metadata_printf(session, | |
566 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n", | |
567 | elem_type->u.integer.size, | |
568 | elem_type->u.integer.alignment, | |
569 | elem_type->u.integer.signedness, | |
570 | (elem_type->u.integer.encoding == ustctl_encode_none) | |
571 | ? "none" | |
572 | : (elem_type->u.integer.encoding == ustctl_encode_UTF8) | |
573 | ? "UTF8" | |
574 | : "ASCII", | |
575 | elem_type->u.integer.base, | |
576 | elem_type->u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
577 | field->name, array_length); | |
da860cab | 578 | (*iter_field)++; |
d0b96690 DG |
579 | break; |
580 | } | |
581 | case ustctl_atype_sequence: | |
582 | { | |
583 | const struct ustctl_basic_type *elem_type; | |
584 | const struct ustctl_basic_type *length_type; | |
585 | ||
0d32d1a9 MD |
586 | elem_type = &field->type.u.legacy.sequence.elem_type; |
587 | length_type = &field->type.u.legacy.sequence.length_type; | |
da860cab MD |
588 | ret = print_tabs(session, nesting); |
589 | if (ret) { | |
590 | goto end; | |
591 | } | |
0d32d1a9 MD |
592 | |
593 | /* Only integers are currently supported in sequences. */ | |
594 | if (elem_type->atype != ustctl_atype_integer) { | |
595 | ret = -EINVAL; | |
596 | goto end; | |
597 | } | |
598 | ||
d0b96690 | 599 | ret = lttng_metadata_printf(session, |
da860cab | 600 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } __%s_length;\n", |
d0b96690 DG |
601 | length_type->u.basic.integer.size, |
602 | (unsigned int) length_type->u.basic.integer.alignment, | |
603 | length_type->u.basic.integer.signedness, | |
604 | (length_type->u.basic.integer.encoding == ustctl_encode_none) | |
605 | ? "none" | |
606 | : ((length_type->u.basic.integer.encoding == ustctl_encode_UTF8) | |
607 | ? "UTF8" | |
608 | : "ASCII"), | |
609 | length_type->u.basic.integer.base, | |
610 | length_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
611 | field->name); | |
da860cab MD |
612 | if (ret) { |
613 | goto end; | |
614 | } | |
d0b96690 | 615 | |
da860cab MD |
616 | ret = print_tabs(session, nesting); |
617 | if (ret) { | |
618 | goto end; | |
619 | } | |
d0b96690 | 620 | ret = lttng_metadata_printf(session, |
da860cab | 621 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ __%s_length ];\n", |
d0b96690 DG |
622 | elem_type->u.basic.integer.size, |
623 | (unsigned int) elem_type->u.basic.integer.alignment, | |
624 | elem_type->u.basic.integer.signedness, | |
625 | (elem_type->u.basic.integer.encoding == ustctl_encode_none) | |
626 | ? "none" | |
627 | : ((elem_type->u.basic.integer.encoding == ustctl_encode_UTF8) | |
628 | ? "UTF8" | |
629 | : "ASCII"), | |
630 | elem_type->u.basic.integer.base, | |
631 | elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
632 | field->name, | |
633 | field->name); | |
da860cab | 634 | (*iter_field)++; |
d0b96690 DG |
635 | break; |
636 | } | |
0d32d1a9 MD |
637 | case ustctl_atype_sequence_nestable: |
638 | { | |
639 | const struct ustctl_field *sequence_nestable; | |
640 | const struct ustctl_type *elem_type; | |
641 | ||
642 | (*iter_field)++; | |
643 | if (*iter_field >= nr_fields) { | |
644 | ret = -EOVERFLOW; | |
645 | goto end; | |
646 | } | |
647 | sequence_nestable = &fields[*iter_field]; | |
648 | elem_type = &sequence_nestable->type; | |
649 | ||
650 | /* Only integers are currently supported in sequences. */ | |
651 | if (elem_type->atype != ustctl_atype_integer) { | |
652 | ret = -EINVAL; | |
653 | goto end; | |
654 | } | |
655 | ||
656 | if (field->type.u.sequence_nestable.alignment) { | |
657 | ret = print_tabs(session, nesting); | |
658 | if (ret) { | |
659 | goto end; | |
660 | } | |
661 | ret = lttng_metadata_printf(session, | |
662 | "struct { } align(%u) _%s_padding;\n", | |
663 | field->type.u.sequence_nestable.alignment * CHAR_BIT, | |
664 | field->name); | |
665 | if (ret) { | |
666 | goto end; | |
667 | } | |
668 | } | |
d0b96690 | 669 | |
0d32d1a9 MD |
670 | ret = print_tabs(session, nesting); |
671 | if (ret) { | |
672 | goto end; | |
673 | } | |
674 | ret = lttng_metadata_printf(session, | |
675 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ _%s ];\n", | |
676 | elem_type->u.integer.size, | |
677 | (unsigned int) elem_type->u.integer.alignment, | |
678 | elem_type->u.integer.signedness, | |
679 | (elem_type->u.integer.encoding == ustctl_encode_none) | |
680 | ? "none" | |
681 | : ((elem_type->u.integer.encoding == ustctl_encode_UTF8) | |
682 | ? "UTF8" | |
683 | : "ASCII"), | |
684 | elem_type->u.integer.base, | |
685 | elem_type->u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
686 | field->name, | |
687 | field->type.u.sequence_nestable.length_name); | |
688 | (*iter_field)++; | |
689 | break; | |
690 | } | |
d0b96690 DG |
691 | case ustctl_atype_string: |
692 | /* Default encoding is UTF8 */ | |
da860cab MD |
693 | ret = print_tabs(session, nesting); |
694 | if (ret) { | |
695 | goto end; | |
696 | } | |
d0b96690 | 697 | ret = lttng_metadata_printf(session, |
da860cab | 698 | "string%s _%s;\n", |
0d32d1a9 | 699 | field->type.u.string.encoding == ustctl_encode_ASCII ? |
d0b96690 DG |
700 | " { encoding = ASCII; }" : "", |
701 | field->name); | |
da860cab MD |
702 | (*iter_field)++; |
703 | break; | |
704 | case ustctl_atype_variant: | |
0d32d1a9 MD |
705 | ret = _lttng_variant_statedump(session, |
706 | field->type.u.legacy.variant.nr_choices, | |
707 | field->type.u.legacy.variant.tag_name, | |
708 | 0, | |
709 | fields, nr_fields, iter_field, nesting); | |
710 | if (ret) { | |
711 | goto end; | |
712 | } | |
713 | break; | |
714 | case ustctl_atype_variant_nestable: | |
715 | ret = _lttng_variant_statedump(session, | |
716 | field->type.u.variant_nestable.nr_choices, | |
717 | field->type.u.variant_nestable.tag_name, | |
718 | field->type.u.variant_nestable.alignment, | |
719 | fields, nr_fields, iter_field, nesting); | |
da860cab MD |
720 | if (ret) { |
721 | goto end; | |
722 | } | |
723 | break; | |
724 | case ustctl_atype_struct: | |
0d32d1a9 MD |
725 | if (field->type.u.legacy._struct.nr_fields != 0) { |
726 | /* Currently only 0-length structures are supported. */ | |
727 | ret = -EINVAL; | |
728 | goto end; | |
729 | } | |
da860cab MD |
730 | ret = print_tabs(session, nesting); |
731 | if (ret) { | |
732 | goto end; | |
733 | } | |
734 | ret = lttng_metadata_printf(session, | |
735 | "struct {} _%s;\n", | |
736 | field->name); | |
737 | (*iter_field)++; | |
d0b96690 | 738 | break; |
0d32d1a9 MD |
739 | case ustctl_atype_struct_nestable: |
740 | if (field->type.u.struct_nestable.nr_fields != 0) { | |
741 | /* Currently only 0-length structures are supported. */ | |
742 | ret = -EINVAL; | |
743 | goto end; | |
744 | } | |
745 | ret = print_tabs(session, nesting); | |
746 | if (ret) { | |
747 | goto end; | |
748 | } | |
749 | if (field->type.u.struct_nestable.alignment) { | |
750 | ret = lttng_metadata_printf(session, | |
751 | "struct {} align(%u) _%s;\n", | |
752 | field->type.u.struct_nestable.alignment * CHAR_BIT, | |
753 | field->name); | |
754 | if (ret) { | |
755 | goto end; | |
756 | } | |
757 | } else { | |
758 | ret = lttng_metadata_printf(session, | |
759 | "struct {} _%s;\n", | |
760 | field->name); | |
761 | } | |
762 | (*iter_field)++; | |
763 | break; | |
764 | case ustctl_atype_enum_nestable: | |
765 | { | |
766 | const struct ustctl_field *container_field; | |
767 | const struct ustctl_type *container_type; | |
768 | ||
769 | (*iter_field)++; | |
770 | if (*iter_field >= nr_fields) { | |
771 | ret = -EOVERFLOW; | |
772 | goto end; | |
773 | } | |
774 | container_field = &fields[*iter_field]; | |
775 | container_type = &container_field->type; | |
776 | ||
777 | /* Only integers are supported as container types. */ | |
778 | if (container_type->atype != ustctl_atype_integer) { | |
779 | ret = -EINVAL; | |
780 | goto end; | |
781 | } | |
782 | ret = ust_metadata_enum_statedump(session, | |
783 | field->type.u.enum_nestable.name, | |
784 | field->type.u.enum_nestable.id, | |
785 | &container_type->u.integer, | |
786 | field->name, iter_field, nesting); | |
787 | break; | |
788 | } | |
d0b96690 | 789 | default: |
da860cab | 790 | ret = -EINVAL; |
d0b96690 | 791 | } |
da860cab | 792 | end: |
d0b96690 DG |
793 | return ret; |
794 | } | |
795 | ||
796 | static | |
797 | int _lttng_context_metadata_statedump(struct ust_registry_session *session, | |
798 | size_t nr_ctx_fields, | |
799 | struct ustctl_field *ctx) | |
800 | { | |
801 | int ret = 0; | |
da860cab | 802 | size_t i = 0; |
d0b96690 DG |
803 | |
804 | if (!ctx) | |
805 | return 0; | |
da860cab MD |
806 | for (;;) { |
807 | if (i >= nr_ctx_fields) { | |
808 | break; | |
809 | } | |
810 | ret = _lttng_field_statedump(session, ctx, | |
811 | nr_ctx_fields, &i, 2); | |
812 | if (ret) { | |
813 | break; | |
814 | } | |
d0b96690 DG |
815 | } |
816 | return ret; | |
817 | } | |
818 | ||
819 | static | |
820 | int _lttng_fields_metadata_statedump(struct ust_registry_session *session, | |
821 | struct ust_registry_event *event) | |
822 | { | |
823 | int ret = 0; | |
da860cab | 824 | size_t i = 0; |
d0b96690 | 825 | |
da860cab MD |
826 | for (;;) { |
827 | if (i >= event->nr_fields) { | |
828 | break; | |
829 | } | |
830 | ret = _lttng_field_statedump(session, event->fields, | |
831 | event->nr_fields, &i, 2); | |
832 | if (ret) { | |
833 | break; | |
834 | } | |
d0b96690 DG |
835 | } |
836 | return ret; | |
837 | } | |
838 | ||
839 | /* | |
840 | * Should be called with session registry mutex held. | |
841 | */ | |
842 | int ust_metadata_event_statedump(struct ust_registry_session *session, | |
843 | struct ust_registry_channel *chan, | |
844 | struct ust_registry_event *event) | |
845 | { | |
846 | int ret = 0; | |
847 | ||
848 | /* Don't dump metadata events */ | |
849 | if (chan->chan_id == -1U) | |
850 | return 0; | |
851 | ||
852 | ret = lttng_metadata_printf(session, | |
853 | "event {\n" | |
854 | " name = \"%s\";\n" | |
855 | " id = %u;\n" | |
856 | " stream_id = %u;\n", | |
857 | event->name, | |
858 | event->id, | |
859 | chan->chan_id); | |
0d32d1a9 | 860 | if (ret) { |
d0b96690 | 861 | goto end; |
0d32d1a9 | 862 | } |
d0b96690 DG |
863 | |
864 | ret = lttng_metadata_printf(session, | |
865 | " loglevel = %d;\n", | |
2106efa0 | 866 | event->loglevel_value); |
0d32d1a9 | 867 | if (ret) { |
d0b96690 | 868 | goto end; |
0d32d1a9 | 869 | } |
d0b96690 DG |
870 | |
871 | if (event->model_emf_uri) { | |
872 | ret = lttng_metadata_printf(session, | |
873 | " model.emf.uri = \"%s\";\n", | |
874 | event->model_emf_uri); | |
0d32d1a9 | 875 | if (ret) { |
d0b96690 | 876 | goto end; |
0d32d1a9 | 877 | } |
d0b96690 DG |
878 | } |
879 | ||
d0b96690 DG |
880 | ret = lttng_metadata_printf(session, |
881 | " fields := struct {\n" | |
882 | ); | |
0d32d1a9 | 883 | if (ret) { |
d0b96690 | 884 | goto end; |
0d32d1a9 | 885 | } |
d0b96690 DG |
886 | |
887 | ret = _lttng_fields_metadata_statedump(session, event); | |
0d32d1a9 | 888 | if (ret) { |
d0b96690 | 889 | goto end; |
0d32d1a9 | 890 | } |
d0b96690 DG |
891 | |
892 | ret = lttng_metadata_printf(session, | |
893 | " };\n" | |
894 | "};\n\n"); | |
0d32d1a9 | 895 | if (ret) { |
d0b96690 | 896 | goto end; |
0d32d1a9 | 897 | } |
7972aab2 | 898 | event->metadata_dumped = 1; |
d0b96690 DG |
899 | |
900 | end: | |
901 | return ret; | |
902 | } | |
903 | ||
904 | /* | |
905 | * Should be called with session registry mutex held. | |
906 | */ | |
907 | int ust_metadata_channel_statedump(struct ust_registry_session *session, | |
908 | struct ust_registry_channel *chan) | |
909 | { | |
910 | int ret = 0; | |
911 | ||
912 | /* Don't dump metadata events */ | |
913 | if (chan->chan_id == -1U) | |
914 | return 0; | |
915 | ||
916 | if (!chan->header_type) | |
917 | return -EINVAL; | |
918 | ||
919 | ret = lttng_metadata_printf(session, | |
920 | "stream {\n" | |
921 | " id = %u;\n" | |
922 | " event.header := %s;\n" | |
923 | " packet.context := struct packet_context;\n", | |
924 | chan->chan_id, | |
925 | chan->header_type == USTCTL_CHANNEL_HEADER_COMPACT ? | |
926 | "struct event_header_compact" : | |
927 | "struct event_header_large"); | |
0d32d1a9 | 928 | if (ret) { |
d0b96690 | 929 | goto end; |
0d32d1a9 | 930 | } |
d0b96690 DG |
931 | |
932 | if (chan->ctx_fields) { | |
933 | ret = lttng_metadata_printf(session, | |
934 | " event.context := struct {\n"); | |
0d32d1a9 | 935 | if (ret) { |
d0b96690 | 936 | goto end; |
0d32d1a9 | 937 | } |
d0b96690 DG |
938 | } |
939 | ret = _lttng_context_metadata_statedump(session, | |
940 | chan->nr_ctx_fields, | |
941 | chan->ctx_fields); | |
0d32d1a9 | 942 | if (ret) { |
d0b96690 | 943 | goto end; |
0d32d1a9 | 944 | } |
d0b96690 DG |
945 | if (chan->ctx_fields) { |
946 | ret = lttng_metadata_printf(session, | |
947 | " };\n"); | |
0d32d1a9 | 948 | if (ret) { |
d0b96690 | 949 | goto end; |
0d32d1a9 | 950 | } |
d0b96690 DG |
951 | } |
952 | ||
953 | ret = lttng_metadata_printf(session, | |
954 | "};\n\n"); | |
7972aab2 DG |
955 | /* Flag success of metadata dump. */ |
956 | chan->metadata_dumped = 1; | |
d0b96690 DG |
957 | |
958 | end: | |
959 | return ret; | |
960 | } | |
961 | ||
962 | static | |
963 | int _lttng_stream_packet_context_declare(struct ust_registry_session *session) | |
964 | { | |
965 | return lttng_metadata_printf(session, | |
966 | "struct packet_context {\n" | |
967 | " uint64_clock_monotonic_t timestamp_begin;\n" | |
968 | " uint64_clock_monotonic_t timestamp_end;\n" | |
969 | " uint64_t content_size;\n" | |
970 | " uint64_t packet_size;\n" | |
0793bcc6 | 971 | " uint64_t packet_seq_num;\n" |
d0b96690 DG |
972 | " unsigned long events_discarded;\n" |
973 | " uint32_t cpu_id;\n" | |
974 | "};\n\n" | |
975 | ); | |
976 | } | |
977 | ||
978 | /* | |
979 | * Compact header: | |
980 | * id: range: 0 - 30. | |
981 | * id 31 is reserved to indicate an extended header. | |
982 | * | |
983 | * Large header: | |
984 | * id: range: 0 - 65534. | |
985 | * id 65535 is reserved to indicate an extended header. | |
986 | */ | |
987 | static | |
988 | int _lttng_event_header_declare(struct ust_registry_session *session) | |
989 | { | |
990 | return lttng_metadata_printf(session, | |
991 | "struct event_header_compact {\n" | |
992 | " enum : uint5_t { compact = 0 ... 30, extended = 31 } id;\n" | |
993 | " variant <id> {\n" | |
994 | " struct {\n" | |
995 | " uint27_clock_monotonic_t timestamp;\n" | |
996 | " } compact;\n" | |
997 | " struct {\n" | |
998 | " uint32_t id;\n" | |
999 | " uint64_clock_monotonic_t timestamp;\n" | |
1000 | " } extended;\n" | |
1001 | " } v;\n" | |
1002 | "} align(%u);\n" | |
1003 | "\n" | |
1004 | "struct event_header_large {\n" | |
1005 | " enum : uint16_t { compact = 0 ... 65534, extended = 65535 } id;\n" | |
1006 | " variant <id> {\n" | |
1007 | " struct {\n" | |
1008 | " uint32_clock_monotonic_t timestamp;\n" | |
1009 | " } compact;\n" | |
1010 | " struct {\n" | |
1011 | " uint32_t id;\n" | |
1012 | " uint64_clock_monotonic_t timestamp;\n" | |
1013 | " } extended;\n" | |
1014 | " } v;\n" | |
1015 | "} align(%u);\n\n", | |
1016 | session->uint32_t_alignment, | |
1017 | session->uint16_t_alignment | |
1018 | ); | |
1019 | } | |
1020 | ||
dc113ec7 MD |
1021 | /* |
1022 | * The offset between monotonic and realtime clock can be negative if | |
1023 | * the system sets the REALTIME clock to 0 after boot. | |
dc113ec7 | 1024 | */ |
d0b96690 | 1025 | static |
8c645bb0 | 1026 | int measure_single_clock_offset(struct offset_sample *sample) |
d0b96690 | 1027 | { |
dc113ec7 | 1028 | uint64_t monotonic_avg, monotonic[2], measure_delta, realtime; |
fc0bb9fa | 1029 | uint64_t tcf = trace_clock_freq(); |
d0b96690 DG |
1030 | struct timespec rts = { 0, 0 }; |
1031 | int ret; | |
1032 | ||
1033 | monotonic[0] = trace_clock_read64(); | |
389fbf04 | 1034 | ret = lttng_clock_gettime(CLOCK_REALTIME, &rts); |
8c645bb0 MD |
1035 | if (ret < 0) { |
1036 | return ret; | |
1037 | } | |
d0b96690 | 1038 | monotonic[1] = trace_clock_read64(); |
8c645bb0 MD |
1039 | measure_delta = monotonic[1] - monotonic[0]; |
1040 | if (measure_delta > sample->measure_delta) { | |
1041 | /* | |
1042 | * Discard value if it took longer to read than the best | |
1043 | * sample so far. | |
1044 | */ | |
1045 | return 0; | |
1046 | } | |
dc113ec7 | 1047 | monotonic_avg = (monotonic[0] + monotonic[1]) >> 1; |
6e1b0543 MD |
1048 | realtime = (uint64_t) rts.tv_sec * tcf; |
1049 | if (tcf == NSEC_PER_SEC) { | |
1050 | realtime += rts.tv_nsec; | |
1051 | } else { | |
1052 | realtime += (uint64_t) rts.tv_nsec * tcf / NSEC_PER_SEC; | |
fc0bb9fa | 1053 | } |
c2636b57 | 1054 | sample->offset = (int64_t) realtime - monotonic_avg; |
8c645bb0 MD |
1055 | sample->measure_delta = measure_delta; |
1056 | return 0; | |
d0b96690 DG |
1057 | } |
1058 | ||
8c645bb0 MD |
1059 | /* |
1060 | * Approximation of NTP time of day to clock monotonic correlation, | |
1061 | * taken at start of trace. Keep the measurement that took the less time | |
1062 | * to complete, thus removing imprecision caused by preemption. | |
c2636b57 | 1063 | * May return a negative offset. |
8c645bb0 MD |
1064 | */ |
1065 | static | |
c2636b57 | 1066 | int64_t measure_clock_offset(void) |
8c645bb0 MD |
1067 | { |
1068 | int i; | |
1069 | struct offset_sample offset_best_sample = { | |
1070 | .offset = 0, | |
1071 | .measure_delta = UINT64_MAX, | |
1072 | }; | |
1073 | ||
1074 | for (i = 0; i < NR_CLOCK_OFFSET_SAMPLES; i++) { | |
1075 | if (measure_single_clock_offset(&offset_best_sample)) { | |
1076 | return 0; | |
1077 | } | |
1078 | } | |
1079 | return offset_best_sample.offset; | |
1080 | } | |
d0b96690 | 1081 | |
8de88061 JR |
1082 | static |
1083 | int print_metadata_session_information(struct ust_registry_session *registry) | |
1084 | { | |
1085 | int ret; | |
1086 | struct ltt_session *session = NULL; | |
1087 | char creation_datetime[ISO8601_STR_LEN]; | |
1088 | ||
1089 | rcu_read_lock(); | |
1090 | session = session_find_by_id(registry->tracing_id); | |
1091 | if (!session) { | |
1092 | ret = -1; | |
1093 | goto error; | |
1094 | } | |
1095 | ||
1096 | /* Print the trace name */ | |
1097 | ret = lttng_metadata_printf(registry, " trace_name = \""); | |
1098 | if (ret) { | |
1099 | goto error; | |
1100 | } | |
1101 | ||
1102 | /* | |
1103 | * This is necessary since the creation time is present in the session | |
1104 | * name when it is generated. | |
1105 | */ | |
1106 | if (session->has_auto_generated_name) { | |
1107 | ret = print_escaped_ctf_string(registry, DEFAULT_SESSION_NAME); | |
1108 | } else { | |
1109 | ret = print_escaped_ctf_string(registry, session->name); | |
1110 | } | |
1111 | if (ret) { | |
1112 | goto error; | |
1113 | } | |
1114 | ||
1115 | ret = lttng_metadata_printf(registry, "\";\n"); | |
1116 | if (ret) { | |
1117 | goto error; | |
1118 | } | |
1119 | ||
1120 | /* Prepare creation time */ | |
1121 | ret = time_to_iso8601_str(session->creation_time, creation_datetime, | |
1122 | sizeof(creation_datetime)); | |
1123 | if (ret) { | |
1124 | goto error; | |
1125 | } | |
1126 | ||
1127 | /* Output the reste of the information */ | |
1128 | ret = lttng_metadata_printf(registry, | |
1129 | " trace_creation_datetime = \"%s\";\n" | |
1130 | " hostname = \"%s\";\n", | |
1131 | creation_datetime, session->hostname); | |
1132 | if (ret) { | |
1133 | goto error; | |
1134 | } | |
1135 | ||
1136 | error: | |
1137 | if (session) { | |
1138 | session_put(session); | |
1139 | } | |
1140 | rcu_read_unlock(); | |
1141 | return ret; | |
1142 | } | |
1143 | ||
1144 | static | |
1145 | int print_metadata_app_information(struct ust_registry_session *registry, | |
1146 | struct ust_app *app) | |
1147 | { | |
1148 | int ret; | |
1149 | char datetime[ISO8601_STR_LEN]; | |
1150 | ||
1151 | if (!app) { | |
1152 | ret = 0; | |
1153 | goto end; | |
1154 | } | |
1155 | ||
1156 | ret = time_to_iso8601_str( | |
1157 | app->registration_time, datetime, sizeof(datetime)); | |
1158 | if (ret) { | |
1159 | goto end; | |
1160 | } | |
1161 | ||
1162 | ret = lttng_metadata_printf(registry, | |
1163 | " tracer_patchlevel = %u;\n" | |
1164 | " vpid = %d;\n" | |
1165 | " procname = \"%s\";\n" | |
1166 | " vpid_datetime = \"%s\";\n", | |
1167 | app->version.patchlevel, (int) app->pid, app->name, | |
1168 | datetime); | |
1169 | ||
1170 | end: | |
1171 | return ret; | |
1172 | } | |
1173 | ||
d0b96690 DG |
1174 | /* |
1175 | * Should be called with session registry mutex held. | |
1176 | */ | |
1177 | int ust_metadata_session_statedump(struct ust_registry_session *session, | |
af6142cf MD |
1178 | struct ust_app *app, |
1179 | uint32_t major, | |
1180 | uint32_t minor) | |
d0b96690 | 1181 | { |
c70636a7 MJ |
1182 | char uuid_s[LTTNG_UUID_STR_LEN], |
1183 | clock_uuid_s[LTTNG_UUID_STR_LEN]; | |
d0b96690 | 1184 | int ret = 0; |
d0b96690 | 1185 | |
7972aab2 | 1186 | assert(session); |
7972aab2 | 1187 | |
c8e0c5f5 | 1188 | lttng_uuid_to_str(session->uuid, uuid_s); |
d0b96690 | 1189 | |
d7ba1388 MD |
1190 | /* For crash ABI */ |
1191 | ret = lttng_metadata_printf(session, | |
1192 | "/* CTF %u.%u */\n\n", | |
1193 | CTF_SPEC_MAJOR, | |
1194 | CTF_SPEC_MINOR); | |
1195 | if (ret) { | |
1196 | goto end; | |
1197 | } | |
1198 | ||
d0b96690 DG |
1199 | ret = lttng_metadata_printf(session, |
1200 | "typealias integer { size = 8; align = %u; signed = false; } := uint8_t;\n" | |
1201 | "typealias integer { size = 16; align = %u; signed = false; } := uint16_t;\n" | |
1202 | "typealias integer { size = 32; align = %u; signed = false; } := uint32_t;\n" | |
1203 | "typealias integer { size = 64; align = %u; signed = false; } := uint64_t;\n" | |
1204 | "typealias integer { size = %u; align = %u; signed = false; } := unsigned long;\n" | |
1205 | "typealias integer { size = 5; align = 1; signed = false; } := uint5_t;\n" | |
1206 | "typealias integer { size = 27; align = 1; signed = false; } := uint27_t;\n" | |
1207 | "\n" | |
1208 | "trace {\n" | |
1209 | " major = %u;\n" | |
1210 | " minor = %u;\n" | |
1211 | " uuid = \"%s\";\n" | |
1212 | " byte_order = %s;\n" | |
1213 | " packet.header := struct {\n" | |
1214 | " uint32_t magic;\n" | |
1215 | " uint8_t uuid[16];\n" | |
1216 | " uint32_t stream_id;\n" | |
0793bcc6 | 1217 | " uint64_t stream_instance_id;\n" |
d0b96690 DG |
1218 | " };\n" |
1219 | "};\n\n", | |
1220 | session->uint8_t_alignment, | |
1221 | session->uint16_t_alignment, | |
1222 | session->uint32_t_alignment, | |
1223 | session->uint64_t_alignment, | |
1224 | session->bits_per_long, | |
1225 | session->long_alignment, | |
1226 | CTF_SPEC_MAJOR, | |
1227 | CTF_SPEC_MINOR, | |
1228 | uuid_s, | |
1229 | session->byte_order == BIG_ENDIAN ? "be" : "le" | |
1230 | ); | |
0d32d1a9 | 1231 | if (ret) { |
d0b96690 | 1232 | goto end; |
0d32d1a9 | 1233 | } |
d0b96690 | 1234 | |
d0b96690 DG |
1235 | ret = lttng_metadata_printf(session, |
1236 | "env {\n" | |
d0b96690 DG |
1237 | " domain = \"ust\";\n" |
1238 | " tracer_name = \"lttng-ust\";\n" | |
1239 | " tracer_major = %u;\n" | |
8de88061 JR |
1240 | " tracer_minor = %u;\n" |
1241 | " tracer_buffering_scheme = \"%s\";\n" | |
1242 | " tracer_buffering_id = %u;\n" | |
1243 | " architecture_bit_width = %u;\n", | |
af6142cf | 1244 | major, |
8de88061 JR |
1245 | minor, |
1246 | app ? "pid" : "uid", | |
1247 | app ? (int) app->pid : (int) session->tracing_uid, | |
1248 | session->bits_per_long); | |
1249 | if (ret) { | |
1250 | goto end; | |
1251 | } | |
1252 | ||
1253 | ret = print_metadata_session_information(session); | |
1254 | if (ret) { | |
d0b96690 | 1255 | goto end; |
8de88061 | 1256 | } |
d0b96690 DG |
1257 | |
1258 | /* | |
1259 | * If per-application registry, we can output extra information | |
1260 | * about the application. | |
1261 | */ | |
8de88061 JR |
1262 | ret = print_metadata_app_information(session, app); |
1263 | if (ret) { | |
1264 | goto end; | |
d0b96690 DG |
1265 | } |
1266 | ||
1267 | ret = lttng_metadata_printf(session, | |
1268 | "};\n\n" | |
1269 | ); | |
0d32d1a9 | 1270 | if (ret) { |
d0b96690 | 1271 | goto end; |
0d32d1a9 | 1272 | } |
d0b96690 DG |
1273 | |
1274 | ret = lttng_metadata_printf(session, | |
1275 | "clock {\n" | |
fc0bb9fa MD |
1276 | " name = \"%s\";\n", |
1277 | trace_clock_name() | |
d0b96690 | 1278 | ); |
0d32d1a9 | 1279 | if (ret) { |
d0b96690 | 1280 | goto end; |
0d32d1a9 | 1281 | } |
d0b96690 DG |
1282 | |
1283 | if (!trace_clock_uuid(clock_uuid_s)) { | |
1284 | ret = lttng_metadata_printf(session, | |
1285 | " uuid = \"%s\";\n", | |
1286 | clock_uuid_s | |
1287 | ); | |
0d32d1a9 | 1288 | if (ret) { |
d0b96690 | 1289 | goto end; |
0d32d1a9 | 1290 | } |
d0b96690 DG |
1291 | } |
1292 | ||
1293 | ret = lttng_metadata_printf(session, | |
fc0bb9fa | 1294 | " description = \"%s\";\n" |
d0b96690 DG |
1295 | " freq = %" PRIu64 "; /* Frequency, in Hz */\n" |
1296 | " /* clock value offset from Epoch is: offset * (1/freq) */\n" | |
c2636b57 | 1297 | " offset = %" PRId64 ";\n" |
d0b96690 | 1298 | "};\n\n", |
fc0bb9fa | 1299 | trace_clock_description(), |
d0b96690 DG |
1300 | trace_clock_freq(), |
1301 | measure_clock_offset() | |
1302 | ); | |
0d32d1a9 | 1303 | if (ret) { |
d0b96690 | 1304 | goto end; |
0d32d1a9 | 1305 | } |
d0b96690 DG |
1306 | |
1307 | ret = lttng_metadata_printf(session, | |
1308 | "typealias integer {\n" | |
1309 | " size = 27; align = 1; signed = false;\n" | |
fc0bb9fa | 1310 | " map = clock.%s.value;\n" |
d0b96690 DG |
1311 | "} := uint27_clock_monotonic_t;\n" |
1312 | "\n" | |
1313 | "typealias integer {\n" | |
1314 | " size = 32; align = %u; signed = false;\n" | |
fc0bb9fa | 1315 | " map = clock.%s.value;\n" |
d0b96690 DG |
1316 | "} := uint32_clock_monotonic_t;\n" |
1317 | "\n" | |
1318 | "typealias integer {\n" | |
1319 | " size = 64; align = %u; signed = false;\n" | |
fc0bb9fa | 1320 | " map = clock.%s.value;\n" |
d0b96690 | 1321 | "} := uint64_clock_monotonic_t;\n\n", |
fc0bb9fa | 1322 | trace_clock_name(), |
d0b96690 | 1323 | session->uint32_t_alignment, |
fc0bb9fa MD |
1324 | trace_clock_name(), |
1325 | session->uint64_t_alignment, | |
1326 | trace_clock_name() | |
d0b96690 | 1327 | ); |
0d32d1a9 | 1328 | if (ret) { |
d0b96690 | 1329 | goto end; |
0d32d1a9 | 1330 | } |
d0b96690 DG |
1331 | |
1332 | ret = _lttng_stream_packet_context_declare(session); | |
0d32d1a9 | 1333 | if (ret) { |
d0b96690 | 1334 | goto end; |
0d32d1a9 | 1335 | } |
d0b96690 DG |
1336 | |
1337 | ret = _lttng_event_header_declare(session); | |
0d32d1a9 | 1338 | if (ret) { |
d0b96690 | 1339 | goto end; |
0d32d1a9 | 1340 | } |
d0b96690 DG |
1341 | |
1342 | end: | |
1343 | return ret; | |
1344 | } |