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 |
b3647fb8 JG |
9 | #include <inttypes.h> |
10 | #include <limits.h> | |
d0b96690 | 11 | #include <stdarg.h> |
b3647fb8 | 12 | #include <stdint.h> |
d0b96690 | 13 | #include <stdio.h> |
b3647fb8 | 14 | #include <string.h> |
d0b96690 | 15 | #include <unistd.h> |
b3647fb8 JG |
16 | #include <vector> |
17 | ||
c9e313bc | 18 | #include <common/common.hpp> |
b3647fb8 | 19 | #include <common/exception.hpp> |
c9e313bc | 20 | #include <common/time.hpp> |
b3647fb8 | 21 | #include <common/uuid.hpp> |
d0b96690 | 22 | |
c9e313bc | 23 | #include "ust-app.hpp" |
b3647fb8 JG |
24 | #include "ust-clock.hpp" |
25 | #include "ust-registry.hpp" | |
8c645bb0 | 26 | |
da860cab | 27 | static |
aeeb48c6 | 28 | int _lttng_field_statedump(ust_registry_session *session, |
b623cb6a | 29 | const struct lttng_ust_ctl_field *fields, size_t nr_fields, |
da860cab MD |
30 | size_t *iter_field, size_t nesting); |
31 | ||
d0b96690 DG |
32 | static inline |
33 | int get_count_order(unsigned int count) | |
34 | { | |
35 | int order; | |
36 | ||
78ddfe55 | 37 | order = lttng_fls(count) - 1; |
46b4dda6 | 38 | if (count & (count - 1)) { |
d0b96690 | 39 | order++; |
46b4dda6 | 40 | } |
a0377dfe | 41 | LTTNG_ASSERT(order >= 0); |
d0b96690 DG |
42 | return order; |
43 | } | |
44 | ||
45 | /* | |
46 | * Returns offset where to write in metadata array, or negative error value on error. | |
47 | */ | |
48 | static | |
aeeb48c6 | 49 | ssize_t metadata_reserve(ust_registry_session *session, size_t len) |
d0b96690 | 50 | { |
aeeb48c6 | 51 | size_t new_len = session->_metadata_len + len; |
d0b96690 | 52 | size_t new_alloc_len = new_len; |
aeeb48c6 | 53 | size_t old_alloc_len = session->_metadata_alloc_len; |
d0b96690 DG |
54 | ssize_t ret; |
55 | ||
56 | if (new_alloc_len > (UINT32_MAX >> 1)) | |
57 | return -EINVAL; | |
58 | if ((old_alloc_len << 1) > (UINT32_MAX >> 1)) | |
59 | return -EINVAL; | |
60 | ||
61 | if (new_alloc_len > old_alloc_len) { | |
62 | char *newptr; | |
63 | ||
64 | new_alloc_len = | |
8957eb48 | 65 | std::max<size_t>(1U << get_count_order(new_alloc_len), old_alloc_len << 1); |
aeeb48c6 | 66 | newptr = (char *) realloc(session->_metadata, new_alloc_len); |
d0b96690 DG |
67 | if (!newptr) |
68 | return -ENOMEM; | |
aeeb48c6 | 69 | session->_metadata = newptr; |
d0b96690 | 70 | /* We zero directly the memory from start of allocation. */ |
aeeb48c6 JG |
71 | memset(&session->_metadata[old_alloc_len], 0, new_alloc_len - old_alloc_len); |
72 | session->_metadata_alloc_len = new_alloc_len; | |
d0b96690 | 73 | } |
aeeb48c6 JG |
74 | ret = session->_metadata_len; |
75 | session->_metadata_len += len; | |
d0b96690 DG |
76 | return ret; |
77 | } | |
78 | ||
d7ba1388 | 79 | static |
aeeb48c6 | 80 | int metadata_file_append(ust_registry_session *session, |
d7ba1388 MD |
81 | const char *str, size_t len) |
82 | { | |
83 | ssize_t written; | |
84 | ||
aeeb48c6 | 85 | if (session->_metadata_fd < 0) { |
d7ba1388 MD |
86 | return 0; |
87 | } | |
88 | /* Write to metadata file */ | |
aeeb48c6 | 89 | written = lttng_write(session->_metadata_fd, str, len); |
d7ba1388 MD |
90 | if (written != len) { |
91 | return -1; | |
92 | } | |
93 | return 0; | |
94 | } | |
95 | ||
d0b96690 DG |
96 | /* |
97 | * We have exclusive access to our metadata buffer (protected by the | |
98 | * ust_lock), so we can do racy operations such as looking for | |
99 | * remaining space left in packet and write, since mutual exclusion | |
100 | * protects us from concurrent writes. | |
101 | */ | |
d22ad5f8 | 102 | static ATTR_FORMAT_PRINTF(2, 3) |
aeeb48c6 | 103 | int lttng_metadata_printf(ust_registry_session *session, |
d0b96690 DG |
104 | const char *fmt, ...) |
105 | { | |
106 | char *str = NULL; | |
107 | size_t len; | |
108 | va_list ap; | |
109 | ssize_t offset; | |
110 | int ret; | |
111 | ||
112 | va_start(ap, fmt); | |
113 | ret = vasprintf(&str, fmt, ap); | |
114 | va_end(ap); | |
115 | if (ret < 0) | |
116 | return -ENOMEM; | |
117 | ||
118 | len = strlen(str); | |
119 | offset = metadata_reserve(session, len); | |
120 | if (offset < 0) { | |
121 | ret = offset; | |
122 | goto end; | |
123 | } | |
aeeb48c6 | 124 | memcpy(&session->_metadata[offset], str, len); |
d7ba1388 MD |
125 | ret = metadata_file_append(session, str, len); |
126 | if (ret) { | |
127 | PERROR("Error appending to metadata file"); | |
128 | goto end; | |
129 | } | |
d0b96690 DG |
130 | DBG3("Append to metadata: \"%s\"", str); |
131 | ret = 0; | |
132 | ||
133 | end: | |
134 | free(str); | |
135 | return ret; | |
136 | } | |
137 | ||
da860cab | 138 | static |
aeeb48c6 | 139 | int print_tabs(ust_registry_session *session, size_t nesting) |
da860cab MD |
140 | { |
141 | size_t i; | |
142 | ||
143 | for (i = 0; i < nesting; i++) { | |
144 | int ret; | |
145 | ||
146 | ret = lttng_metadata_printf(session, " "); | |
147 | if (ret) { | |
148 | return ret; | |
149 | } | |
150 | } | |
151 | return 0; | |
152 | } | |
153 | ||
a1f68b22 MD |
154 | static |
155 | void sanitize_ctf_identifier(char *out, const char *in) | |
156 | { | |
157 | size_t i; | |
158 | ||
fc4b93fa | 159 | for (i = 0; i < LTTNG_UST_ABI_SYM_NAME_LEN; i++) { |
a1f68b22 MD |
160 | switch (in[i]) { |
161 | case '.': | |
162 | case '$': | |
163 | case ':': | |
164 | out[i] = '_'; | |
165 | break; | |
166 | default: | |
167 | out[i] = in[i]; | |
168 | } | |
169 | } | |
170 | } | |
171 | ||
8de88061 | 172 | static |
aeeb48c6 | 173 | int print_escaped_ctf_string(ust_registry_session *session, const char *string) |
8de88061 | 174 | { |
35c829f8 | 175 | int ret = 0; |
8de88061 JR |
176 | size_t i; |
177 | char cur; | |
178 | ||
179 | i = 0; | |
180 | cur = string[i]; | |
181 | while (cur != '\0') { | |
182 | switch (cur) { | |
183 | case '\n': | |
184 | ret = lttng_metadata_printf(session, "%s", "\\n"); | |
185 | break; | |
186 | case '\\': | |
187 | case '"': | |
188 | ret = lttng_metadata_printf(session, "%c", '\\'); | |
189 | if (ret) { | |
190 | goto error; | |
191 | } | |
192 | /* We still print the current char */ | |
193 | /* Fallthrough */ | |
194 | default: | |
195 | ret = lttng_metadata_printf(session, "%c", cur); | |
196 | break; | |
197 | } | |
198 | ||
199 | if (ret) { | |
200 | goto error; | |
201 | } | |
202 | ||
203 | cur = string[++i]; | |
204 | } | |
205 | error: | |
206 | return ret; | |
207 | } | |
208 | ||
10b56aef MD |
209 | /* Called with session registry mutex held. */ |
210 | static | |
aeeb48c6 | 211 | int ust_metadata_enum_statedump(ust_registry_session *session, |
10b56aef MD |
212 | const char *enum_name, |
213 | uint64_t enum_id, | |
b623cb6a | 214 | const struct lttng_ust_ctl_integer_type *container_type, |
da860cab | 215 | const char *field_name, size_t *iter_field, size_t nesting) |
10b56aef MD |
216 | { |
217 | struct ust_registry_enum *reg_enum; | |
b623cb6a | 218 | const struct lttng_ust_ctl_enum_entry *entries; |
10b56aef MD |
219 | size_t nr_entries; |
220 | int ret = 0; | |
221 | size_t i; | |
fc4b93fa | 222 | char identifier[LTTNG_UST_ABI_SYM_NAME_LEN]; |
10b56aef MD |
223 | |
224 | rcu_read_lock(); | |
225 | reg_enum = ust_registry_lookup_enum_by_id(session, enum_name, enum_id); | |
226 | rcu_read_unlock(); | |
227 | /* reg_enum can still be used because session registry mutex is held. */ | |
228 | if (!reg_enum) { | |
229 | ret = -ENOENT; | |
230 | goto end; | |
231 | } | |
232 | entries = reg_enum->entries; | |
233 | nr_entries = reg_enum->nr_entries; | |
234 | ||
da860cab MD |
235 | ret = print_tabs(session, nesting); |
236 | if (ret) { | |
237 | goto end; | |
238 | } | |
10b56aef | 239 | ret = lttng_metadata_printf(session, |
da860cab | 240 | "enum : integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u; } {\n", |
10b56aef MD |
241 | container_type->size, |
242 | container_type->alignment, | |
243 | container_type->signedness, | |
b623cb6a | 244 | (container_type->encoding == lttng_ust_ctl_encode_none) |
10b56aef | 245 | ? "none" |
b623cb6a | 246 | : (container_type->encoding == lttng_ust_ctl_encode_UTF8) |
10b56aef MD |
247 | ? "UTF8" |
248 | : "ASCII", | |
249 | container_type->base); | |
250 | if (ret) { | |
251 | goto end; | |
252 | } | |
1ddb0e8a | 253 | nesting++; |
10b56aef MD |
254 | /* Dump all entries */ |
255 | for (i = 0; i < nr_entries; i++) { | |
b623cb6a | 256 | const struct lttng_ust_ctl_enum_entry *entry = &entries[i]; |
10b56aef MD |
257 | int j, len; |
258 | ||
a1f68b22 MD |
259 | ret = print_tabs(session, nesting); |
260 | if (ret) { | |
261 | goto end; | |
262 | } | |
10b56aef | 263 | ret = lttng_metadata_printf(session, |
a1f68b22 | 264 | "\""); |
10b56aef MD |
265 | if (ret) { |
266 | goto end; | |
267 | } | |
268 | len = strlen(entry->string); | |
269 | /* Escape the character '"' */ | |
270 | for (j = 0; j < len; j++) { | |
271 | char c = entry->string[j]; | |
272 | ||
273 | switch (c) { | |
274 | case '"': | |
275 | ret = lttng_metadata_printf(session, | |
276 | "\\\""); | |
277 | break; | |
278 | case '\\': | |
279 | ret = lttng_metadata_printf(session, | |
280 | "\\\\"); | |
281 | break; | |
282 | default: | |
283 | ret = lttng_metadata_printf(session, | |
284 | "%c", c); | |
285 | break; | |
286 | } | |
287 | if (ret) { | |
288 | goto end; | |
289 | } | |
290 | } | |
e85e3723 | 291 | ret = lttng_metadata_printf(session, "\""); |
10b56aef MD |
292 | if (ret) { |
293 | goto end; | |
294 | } | |
3b016e58 | 295 | |
9d27cec7 | 296 | if (entry->u.extra.options & |
b623cb6a | 297 | LTTNG_UST_CTL_UST_ENUM_ENTRY_OPTION_IS_AUTO) { |
e85e3723 PP |
298 | ret = lttng_metadata_printf(session, ",\n"); |
299 | if (ret) { | |
300 | goto end; | |
301 | } | |
10b56aef MD |
302 | } else { |
303 | ret = lttng_metadata_printf(session, | |
e85e3723 PP |
304 | " = "); |
305 | if (ret) { | |
306 | goto end; | |
307 | } | |
3b016e58 | 308 | |
e85e3723 | 309 | if (entry->start.signedness) { |
3b016e58 | 310 | ret = lttng_metadata_printf(session, |
d22ad5f8 | 311 | "%" PRId64, entry->start.value); |
3b016e58 MD |
312 | } else { |
313 | ret = lttng_metadata_printf(session, | |
d22ad5f8 | 314 | "%" PRIu64, entry->start.value); |
e85e3723 PP |
315 | } |
316 | if (ret) { | |
317 | goto end; | |
318 | } | |
319 | ||
320 | if (entry->start.signedness == entry->end.signedness && | |
321 | entry->start.value == | |
322 | entry->end.value) { | |
323 | ret = lttng_metadata_printf(session, ",\n"); | |
324 | } else { | |
325 | if (entry->end.signedness) { | |
326 | ret = lttng_metadata_printf(session, | |
d22ad5f8 SM |
327 | " ... %" PRId64 ",\n", |
328 | entry->end.value); | |
e85e3723 PP |
329 | } else { |
330 | ret = lttng_metadata_printf(session, | |
d22ad5f8 | 331 | " ... %" PRIu64 ",\n", |
e85e3723 PP |
332 | entry->end.value); |
333 | } | |
334 | } | |
335 | if (ret) { | |
336 | goto end; | |
3b016e58 | 337 | } |
10b56aef MD |
338 | } |
339 | } | |
1ddb0e8a | 340 | nesting--; |
a1f68b22 MD |
341 | sanitize_ctf_identifier(identifier, field_name); |
342 | ret = print_tabs(session, nesting); | |
343 | if (ret) { | |
344 | goto end; | |
345 | } | |
346 | ret = lttng_metadata_printf(session, "} _%s;\n", | |
347 | identifier); | |
da860cab MD |
348 | end: |
349 | (*iter_field)++; | |
350 | return ret; | |
351 | } | |
352 | ||
da860cab | 353 | static |
aeeb48c6 | 354 | int _lttng_variant_statedump(ust_registry_session *session, |
0d32d1a9 MD |
355 | uint32_t nr_choices, const char *tag_name, |
356 | uint32_t alignment, | |
b623cb6a | 357 | const struct lttng_ust_ctl_field *fields, size_t nr_fields, |
da860cab MD |
358 | size_t *iter_field, size_t nesting) |
359 | { | |
b623cb6a | 360 | const struct lttng_ust_ctl_field *variant = &fields[*iter_field]; |
0d32d1a9 | 361 | uint32_t i; |
da860cab | 362 | int ret; |
fc4b93fa | 363 | char identifier[LTTNG_UST_ABI_SYM_NAME_LEN]; |
da860cab | 364 | |
da860cab | 365 | (*iter_field)++; |
0d32d1a9 MD |
366 | sanitize_ctf_identifier(identifier, tag_name); |
367 | if (alignment) { | |
368 | ret = print_tabs(session, nesting); | |
369 | if (ret) { | |
370 | goto end; | |
371 | } | |
372 | ret = lttng_metadata_printf(session, | |
373 | "struct { } align(%u) _%s_padding;\n", | |
374 | alignment * CHAR_BIT, | |
375 | variant->name); | |
376 | if (ret) { | |
377 | goto end; | |
378 | } | |
379 | } | |
a1f68b22 MD |
380 | ret = print_tabs(session, nesting); |
381 | if (ret) { | |
382 | goto end; | |
383 | } | |
da860cab | 384 | ret = lttng_metadata_printf(session, |
a1f68b22 MD |
385 | "variant <_%s> {\n", |
386 | identifier); | |
da860cab MD |
387 | if (ret) { |
388 | goto end; | |
389 | } | |
390 | ||
391 | for (i = 0; i < nr_choices; i++) { | |
392 | if (*iter_field >= nr_fields) { | |
393 | ret = -EOVERFLOW; | |
394 | goto end; | |
395 | } | |
396 | ret = _lttng_field_statedump(session, | |
397 | fields, nr_fields, | |
398 | iter_field, nesting + 1); | |
dc6403f3 JG |
399 | if (ret) { |
400 | goto end; | |
401 | } | |
da860cab | 402 | } |
a1f68b22 MD |
403 | sanitize_ctf_identifier(identifier, variant->name); |
404 | ret = print_tabs(session, nesting); | |
850c5d4a JR |
405 | if (ret) { |
406 | goto end; | |
407 | } | |
da860cab | 408 | ret = lttng_metadata_printf(session, |
a1f68b22 MD |
409 | "} _%s;\n", |
410 | identifier); | |
da860cab MD |
411 | if (ret) { |
412 | goto end; | |
413 | } | |
10b56aef MD |
414 | end: |
415 | return ret; | |
416 | } | |
417 | ||
d0b96690 | 418 | static |
aeeb48c6 | 419 | int _lttng_field_statedump(ust_registry_session *session, |
b623cb6a | 420 | const struct lttng_ust_ctl_field *fields, size_t nr_fields, |
da860cab | 421 | size_t *iter_field, size_t nesting) |
d0b96690 DG |
422 | { |
423 | int ret = 0; | |
424 | const char *bo_be = " byte_order = be;"; | |
425 | const char *bo_le = " byte_order = le;"; | |
426 | const char *bo_native = ""; | |
427 | const char *bo_reverse; | |
b623cb6a | 428 | const struct lttng_ust_ctl_field *field; |
d0b96690 | 429 | |
da860cab MD |
430 | if (*iter_field >= nr_fields) { |
431 | ret = -EOVERFLOW; | |
432 | goto end; | |
433 | } | |
434 | field = &fields[*iter_field]; | |
435 | ||
aeeb48c6 | 436 | if (session->_byte_order == BIG_ENDIAN) { |
d0b96690 | 437 | bo_reverse = bo_le; |
da860cab | 438 | } else { |
d0b96690 | 439 | bo_reverse = bo_be; |
da860cab | 440 | } |
d0b96690 DG |
441 | |
442 | switch (field->type.atype) { | |
b623cb6a | 443 | case lttng_ust_ctl_atype_integer: |
da860cab MD |
444 | ret = print_tabs(session, nesting); |
445 | if (ret) { | |
446 | goto end; | |
447 | } | |
d0b96690 | 448 | ret = lttng_metadata_printf(session, |
da860cab | 449 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s;\n", |
0d32d1a9 MD |
450 | field->type.u.integer.size, |
451 | field->type.u.integer.alignment, | |
452 | field->type.u.integer.signedness, | |
b623cb6a | 453 | (field->type.u.integer.encoding == lttng_ust_ctl_encode_none) |
d0b96690 | 454 | ? "none" |
b623cb6a | 455 | : (field->type.u.integer.encoding == lttng_ust_ctl_encode_UTF8) |
d0b96690 DG |
456 | ? "UTF8" |
457 | : "ASCII", | |
0d32d1a9 MD |
458 | field->type.u.integer.base, |
459 | field->type.u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
d0b96690 | 460 | field->name); |
da860cab | 461 | (*iter_field)++; |
d0b96690 | 462 | break; |
b623cb6a | 463 | case lttng_ust_ctl_atype_enum: |
10b56aef | 464 | ret = ust_metadata_enum_statedump(session, |
0d32d1a9 MD |
465 | field->type.u.legacy.basic.enumeration.name, |
466 | field->type.u.legacy.basic.enumeration.id, | |
467 | &field->type.u.legacy.basic.enumeration.container_type, | |
da860cab | 468 | field->name, iter_field, nesting); |
10b56aef | 469 | break; |
b623cb6a | 470 | case lttng_ust_ctl_atype_float: |
da860cab MD |
471 | ret = print_tabs(session, nesting); |
472 | if (ret) { | |
473 | goto end; | |
474 | } | |
d0b96690 | 475 | ret = lttng_metadata_printf(session, |
da860cab | 476 | "floating_point { exp_dig = %u; mant_dig = %u; align = %u;%s } _%s;\n", |
0d32d1a9 MD |
477 | field->type.u._float.exp_dig, |
478 | field->type.u._float.mant_dig, | |
479 | field->type.u._float.alignment, | |
480 | field->type.u._float.reverse_byte_order ? bo_reverse : bo_native, | |
d0b96690 | 481 | field->name); |
da860cab | 482 | (*iter_field)++; |
d0b96690 | 483 | break; |
b623cb6a | 484 | case lttng_ust_ctl_atype_array: |
d0b96690 | 485 | { |
b623cb6a | 486 | const struct lttng_ust_ctl_basic_type *elem_type; |
d0b96690 | 487 | |
da860cab MD |
488 | ret = print_tabs(session, nesting); |
489 | if (ret) { | |
490 | goto end; | |
491 | } | |
0d32d1a9 MD |
492 | elem_type = &field->type.u.legacy.array.elem_type; |
493 | /* Only integers are currently supported in arrays. */ | |
b623cb6a | 494 | if (elem_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
495 | ret = -EINVAL; |
496 | goto end; | |
497 | } | |
d0b96690 | 498 | ret = lttng_metadata_printf(session, |
da860cab | 499 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n", |
d0b96690 DG |
500 | elem_type->u.basic.integer.size, |
501 | elem_type->u.basic.integer.alignment, | |
502 | elem_type->u.basic.integer.signedness, | |
b623cb6a | 503 | (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none) |
d0b96690 | 504 | ? "none" |
b623cb6a | 505 | : (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8) |
d0b96690 DG |
506 | ? "UTF8" |
507 | : "ASCII", | |
508 | elem_type->u.basic.integer.base, | |
509 | elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
0d32d1a9 MD |
510 | field->name, field->type.u.legacy.array.length); |
511 | (*iter_field)++; | |
512 | break; | |
513 | } | |
b623cb6a | 514 | case lttng_ust_ctl_atype_array_nestable: |
0d32d1a9 MD |
515 | { |
516 | uint32_t array_length; | |
b623cb6a MJ |
517 | const struct lttng_ust_ctl_field *array_nestable; |
518 | const struct lttng_ust_ctl_type *elem_type; | |
0d32d1a9 MD |
519 | |
520 | array_length = field->type.u.array_nestable.length; | |
521 | (*iter_field)++; | |
522 | ||
523 | if (*iter_field >= nr_fields) { | |
524 | ret = -EOVERFLOW; | |
525 | goto end; | |
526 | } | |
527 | array_nestable = &fields[*iter_field]; | |
528 | elem_type = &array_nestable->type; | |
529 | ||
530 | /* Only integers are currently supported in arrays. */ | |
b623cb6a | 531 | if (elem_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
532 | ret = -EINVAL; |
533 | goto end; | |
534 | } | |
535 | ||
536 | if (field->type.u.array_nestable.alignment) { | |
537 | ret = print_tabs(session, nesting); | |
538 | if (ret) { | |
539 | goto end; | |
540 | } | |
541 | ret = lttng_metadata_printf(session, | |
542 | "struct { } align(%u) _%s_padding;\n", | |
543 | field->type.u.array_nestable.alignment * CHAR_BIT, | |
544 | field->name); | |
545 | if (ret) { | |
546 | goto end; | |
547 | } | |
548 | } | |
549 | ||
550 | ret = print_tabs(session, nesting); | |
551 | if (ret) { | |
552 | goto end; | |
553 | } | |
554 | ret = lttng_metadata_printf(session, | |
555 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n", | |
556 | elem_type->u.integer.size, | |
557 | elem_type->u.integer.alignment, | |
558 | elem_type->u.integer.signedness, | |
b623cb6a | 559 | (elem_type->u.integer.encoding == lttng_ust_ctl_encode_none) |
0d32d1a9 | 560 | ? "none" |
b623cb6a | 561 | : (elem_type->u.integer.encoding == lttng_ust_ctl_encode_UTF8) |
0d32d1a9 MD |
562 | ? "UTF8" |
563 | : "ASCII", | |
564 | elem_type->u.integer.base, | |
565 | elem_type->u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
566 | field->name, array_length); | |
da860cab | 567 | (*iter_field)++; |
d0b96690 DG |
568 | break; |
569 | } | |
b623cb6a | 570 | case lttng_ust_ctl_atype_sequence: |
d0b96690 | 571 | { |
b623cb6a MJ |
572 | const struct lttng_ust_ctl_basic_type *elem_type; |
573 | const struct lttng_ust_ctl_basic_type *length_type; | |
d0b96690 | 574 | |
0d32d1a9 MD |
575 | elem_type = &field->type.u.legacy.sequence.elem_type; |
576 | length_type = &field->type.u.legacy.sequence.length_type; | |
da860cab MD |
577 | ret = print_tabs(session, nesting); |
578 | if (ret) { | |
579 | goto end; | |
580 | } | |
0d32d1a9 MD |
581 | |
582 | /* Only integers are currently supported in sequences. */ | |
b623cb6a | 583 | if (elem_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
584 | ret = -EINVAL; |
585 | goto end; | |
586 | } | |
587 | ||
d0b96690 | 588 | ret = lttng_metadata_printf(session, |
da860cab | 589 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } __%s_length;\n", |
d0b96690 DG |
590 | length_type->u.basic.integer.size, |
591 | (unsigned int) length_type->u.basic.integer.alignment, | |
592 | length_type->u.basic.integer.signedness, | |
b623cb6a | 593 | (length_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none) |
d0b96690 | 594 | ? "none" |
b623cb6a | 595 | : ((length_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8) |
d0b96690 DG |
596 | ? "UTF8" |
597 | : "ASCII"), | |
598 | length_type->u.basic.integer.base, | |
599 | length_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
600 | field->name); | |
da860cab MD |
601 | if (ret) { |
602 | goto end; | |
603 | } | |
d0b96690 | 604 | |
da860cab MD |
605 | ret = print_tabs(session, nesting); |
606 | if (ret) { | |
607 | goto end; | |
608 | } | |
d0b96690 | 609 | ret = lttng_metadata_printf(session, |
da860cab | 610 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ __%s_length ];\n", |
d0b96690 DG |
611 | elem_type->u.basic.integer.size, |
612 | (unsigned int) elem_type->u.basic.integer.alignment, | |
613 | elem_type->u.basic.integer.signedness, | |
b623cb6a | 614 | (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none) |
d0b96690 | 615 | ? "none" |
b623cb6a | 616 | : ((elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8) |
d0b96690 DG |
617 | ? "UTF8" |
618 | : "ASCII"), | |
619 | elem_type->u.basic.integer.base, | |
620 | elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native, | |
621 | field->name, | |
622 | field->name); | |
da860cab | 623 | (*iter_field)++; |
d0b96690 DG |
624 | break; |
625 | } | |
b623cb6a | 626 | case lttng_ust_ctl_atype_sequence_nestable: |
0d32d1a9 | 627 | { |
b623cb6a MJ |
628 | const struct lttng_ust_ctl_field *sequence_nestable; |
629 | const struct lttng_ust_ctl_type *elem_type; | |
0d32d1a9 MD |
630 | |
631 | (*iter_field)++; | |
632 | if (*iter_field >= nr_fields) { | |
633 | ret = -EOVERFLOW; | |
634 | goto end; | |
635 | } | |
636 | sequence_nestable = &fields[*iter_field]; | |
637 | elem_type = &sequence_nestable->type; | |
638 | ||
639 | /* Only integers are currently supported in sequences. */ | |
b623cb6a | 640 | if (elem_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
641 | ret = -EINVAL; |
642 | goto end; | |
643 | } | |
644 | ||
645 | if (field->type.u.sequence_nestable.alignment) { | |
646 | ret = print_tabs(session, nesting); | |
647 | if (ret) { | |
648 | goto end; | |
649 | } | |
650 | ret = lttng_metadata_printf(session, | |
651 | "struct { } align(%u) _%s_padding;\n", | |
652 | field->type.u.sequence_nestable.alignment * CHAR_BIT, | |
653 | field->name); | |
654 | if (ret) { | |
655 | goto end; | |
656 | } | |
657 | } | |
d0b96690 | 658 | |
0d32d1a9 MD |
659 | ret = print_tabs(session, nesting); |
660 | if (ret) { | |
661 | goto end; | |
662 | } | |
663 | ret = lttng_metadata_printf(session, | |
664 | "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ _%s ];\n", | |
665 | elem_type->u.integer.size, | |
666 | (unsigned int) elem_type->u.integer.alignment, | |
667 | elem_type->u.integer.signedness, | |
b623cb6a | 668 | (elem_type->u.integer.encoding == lttng_ust_ctl_encode_none) |
0d32d1a9 | 669 | ? "none" |
b623cb6a | 670 | : ((elem_type->u.integer.encoding == lttng_ust_ctl_encode_UTF8) |
0d32d1a9 MD |
671 | ? "UTF8" |
672 | : "ASCII"), | |
673 | elem_type->u.integer.base, | |
674 | elem_type->u.integer.reverse_byte_order ? bo_reverse : bo_native, | |
675 | field->name, | |
676 | field->type.u.sequence_nestable.length_name); | |
677 | (*iter_field)++; | |
678 | break; | |
679 | } | |
b623cb6a | 680 | case lttng_ust_ctl_atype_string: |
d0b96690 | 681 | /* Default encoding is UTF8 */ |
da860cab MD |
682 | ret = print_tabs(session, nesting); |
683 | if (ret) { | |
684 | goto end; | |
685 | } | |
d0b96690 | 686 | ret = lttng_metadata_printf(session, |
da860cab | 687 | "string%s _%s;\n", |
b623cb6a | 688 | field->type.u.string.encoding == lttng_ust_ctl_encode_ASCII ? |
d0b96690 DG |
689 | " { encoding = ASCII; }" : "", |
690 | field->name); | |
da860cab MD |
691 | (*iter_field)++; |
692 | break; | |
b623cb6a | 693 | case lttng_ust_ctl_atype_variant: |
0d32d1a9 MD |
694 | ret = _lttng_variant_statedump(session, |
695 | field->type.u.legacy.variant.nr_choices, | |
696 | field->type.u.legacy.variant.tag_name, | |
697 | 0, | |
698 | fields, nr_fields, iter_field, nesting); | |
699 | if (ret) { | |
700 | goto end; | |
701 | } | |
702 | break; | |
b623cb6a | 703 | case lttng_ust_ctl_atype_variant_nestable: |
0d32d1a9 MD |
704 | ret = _lttng_variant_statedump(session, |
705 | field->type.u.variant_nestable.nr_choices, | |
706 | field->type.u.variant_nestable.tag_name, | |
707 | field->type.u.variant_nestable.alignment, | |
708 | fields, nr_fields, iter_field, nesting); | |
da860cab MD |
709 | if (ret) { |
710 | goto end; | |
711 | } | |
712 | break; | |
b623cb6a | 713 | case lttng_ust_ctl_atype_struct: |
0d32d1a9 MD |
714 | if (field->type.u.legacy._struct.nr_fields != 0) { |
715 | /* Currently only 0-length structures are supported. */ | |
716 | ret = -EINVAL; | |
717 | goto end; | |
718 | } | |
da860cab MD |
719 | ret = print_tabs(session, nesting); |
720 | if (ret) { | |
721 | goto end; | |
722 | } | |
723 | ret = lttng_metadata_printf(session, | |
724 | "struct {} _%s;\n", | |
725 | field->name); | |
726 | (*iter_field)++; | |
d0b96690 | 727 | break; |
b623cb6a | 728 | case lttng_ust_ctl_atype_struct_nestable: |
0d32d1a9 MD |
729 | if (field->type.u.struct_nestable.nr_fields != 0) { |
730 | /* Currently only 0-length structures are supported. */ | |
731 | ret = -EINVAL; | |
732 | goto end; | |
733 | } | |
734 | ret = print_tabs(session, nesting); | |
735 | if (ret) { | |
736 | goto end; | |
737 | } | |
738 | if (field->type.u.struct_nestable.alignment) { | |
739 | ret = lttng_metadata_printf(session, | |
740 | "struct {} align(%u) _%s;\n", | |
741 | field->type.u.struct_nestable.alignment * CHAR_BIT, | |
742 | field->name); | |
743 | if (ret) { | |
744 | goto end; | |
745 | } | |
746 | } else { | |
747 | ret = lttng_metadata_printf(session, | |
748 | "struct {} _%s;\n", | |
749 | field->name); | |
750 | } | |
751 | (*iter_field)++; | |
752 | break; | |
b623cb6a | 753 | case lttng_ust_ctl_atype_enum_nestable: |
0d32d1a9 | 754 | { |
b623cb6a MJ |
755 | const struct lttng_ust_ctl_field *container_field; |
756 | const struct lttng_ust_ctl_type *container_type; | |
0d32d1a9 MD |
757 | |
758 | (*iter_field)++; | |
759 | if (*iter_field >= nr_fields) { | |
760 | ret = -EOVERFLOW; | |
761 | goto end; | |
762 | } | |
763 | container_field = &fields[*iter_field]; | |
764 | container_type = &container_field->type; | |
765 | ||
766 | /* Only integers are supported as container types. */ | |
b623cb6a | 767 | if (container_type->atype != lttng_ust_ctl_atype_integer) { |
0d32d1a9 MD |
768 | ret = -EINVAL; |
769 | goto end; | |
770 | } | |
771 | ret = ust_metadata_enum_statedump(session, | |
772 | field->type.u.enum_nestable.name, | |
773 | field->type.u.enum_nestable.id, | |
774 | &container_type->u.integer, | |
775 | field->name, iter_field, nesting); | |
776 | break; | |
777 | } | |
d0b96690 | 778 | default: |
da860cab | 779 | ret = -EINVAL; |
d0b96690 | 780 | } |
da860cab | 781 | end: |
d0b96690 DG |
782 | return ret; |
783 | } | |
784 | ||
785 | static | |
aeeb48c6 | 786 | int _lttng_context_metadata_statedump(ust_registry_session *session, |
d0b96690 | 787 | size_t nr_ctx_fields, |
b623cb6a | 788 | struct lttng_ust_ctl_field *ctx) |
d0b96690 DG |
789 | { |
790 | int ret = 0; | |
da860cab | 791 | size_t i = 0; |
d0b96690 DG |
792 | |
793 | if (!ctx) | |
794 | return 0; | |
da860cab MD |
795 | for (;;) { |
796 | if (i >= nr_ctx_fields) { | |
797 | break; | |
798 | } | |
799 | ret = _lttng_field_statedump(session, ctx, | |
800 | nr_ctx_fields, &i, 2); | |
801 | if (ret) { | |
802 | break; | |
803 | } | |
d0b96690 DG |
804 | } |
805 | return ret; | |
806 | } | |
807 | ||
808 | static | |
aeeb48c6 | 809 | int _lttng_fields_metadata_statedump(ust_registry_session *session, |
d0b96690 DG |
810 | struct ust_registry_event *event) |
811 | { | |
812 | int ret = 0; | |
da860cab | 813 | size_t i = 0; |
d0b96690 | 814 | |
da860cab MD |
815 | for (;;) { |
816 | if (i >= event->nr_fields) { | |
817 | break; | |
818 | } | |
819 | ret = _lttng_field_statedump(session, event->fields, | |
820 | event->nr_fields, &i, 2); | |
821 | if (ret) { | |
822 | break; | |
823 | } | |
d0b96690 DG |
824 | } |
825 | return ret; | |
826 | } | |
827 | ||
828 | /* | |
829 | * Should be called with session registry mutex held. | |
830 | */ | |
aeeb48c6 | 831 | int ust_metadata_event_statedump(ust_registry_session *session, |
d0b96690 DG |
832 | struct ust_registry_channel *chan, |
833 | struct ust_registry_event *event) | |
834 | { | |
835 | int ret = 0; | |
836 | ||
837 | /* Don't dump metadata events */ | |
838 | if (chan->chan_id == -1U) | |
839 | return 0; | |
840 | ||
bacc39bb SM |
841 | /* |
842 | * We don't want to output an event's metadata before its parent | |
843 | * stream's metadata. If the stream's metadata hasn't been output yet, | |
844 | * skip this event. Its metadata will be output when we output the | |
845 | * stream's metadata. | |
846 | */ | |
847 | if (!chan->metadata_dumped || event->metadata_dumped) { | |
848 | return 0; | |
849 | } | |
850 | ||
d0b96690 DG |
851 | ret = lttng_metadata_printf(session, |
852 | "event {\n" | |
853 | " name = \"%s\";\n" | |
854 | " id = %u;\n" | |
855 | " stream_id = %u;\n", | |
856 | event->name, | |
857 | event->id, | |
858 | chan->chan_id); | |
0d32d1a9 | 859 | if (ret) { |
d0b96690 | 860 | goto end; |
0d32d1a9 | 861 | } |
d0b96690 DG |
862 | |
863 | ret = lttng_metadata_printf(session, | |
864 | " loglevel = %d;\n", | |
2106efa0 | 865 | event->loglevel_value); |
0d32d1a9 | 866 | if (ret) { |
d0b96690 | 867 | goto end; |
0d32d1a9 | 868 | } |
d0b96690 DG |
869 | |
870 | if (event->model_emf_uri) { | |
871 | ret = lttng_metadata_printf(session, | |
872 | " model.emf.uri = \"%s\";\n", | |
873 | event->model_emf_uri); | |
0d32d1a9 | 874 | if (ret) { |
d0b96690 | 875 | goto end; |
0d32d1a9 | 876 | } |
d0b96690 DG |
877 | } |
878 | ||
d0b96690 DG |
879 | ret = lttng_metadata_printf(session, |
880 | " fields := struct {\n" | |
881 | ); | |
0d32d1a9 | 882 | if (ret) { |
d0b96690 | 883 | goto end; |
0d32d1a9 | 884 | } |
d0b96690 DG |
885 | |
886 | ret = _lttng_fields_metadata_statedump(session, event); | |
0d32d1a9 | 887 | if (ret) { |
d0b96690 | 888 | goto end; |
0d32d1a9 | 889 | } |
d0b96690 DG |
890 | |
891 | ret = lttng_metadata_printf(session, | |
892 | " };\n" | |
893 | "};\n\n"); | |
0d32d1a9 | 894 | if (ret) { |
d0b96690 | 895 | goto end; |
0d32d1a9 | 896 | } |
7972aab2 | 897 | event->metadata_dumped = 1; |
d0b96690 DG |
898 | |
899 | end: | |
900 | return ret; | |
901 | } | |
902 | ||
903 | /* | |
904 | * Should be called with session registry mutex held. | |
60f1b42d JG |
905 | * |
906 | * RCU read lock must be held by the caller. | |
d0b96690 | 907 | */ |
aeeb48c6 | 908 | int ust_metadata_channel_statedump(ust_registry_session *session, |
d0b96690 DG |
909 | struct ust_registry_channel *chan) |
910 | { | |
e4589ae2 | 911 | int ret; |
d0b96690 | 912 | |
60f1b42d JG |
913 | ASSERT_RCU_READ_LOCKED(); |
914 | ||
d0b96690 DG |
915 | /* Don't dump metadata events */ |
916 | if (chan->chan_id == -1U) | |
917 | return 0; | |
918 | ||
919 | if (!chan->header_type) | |
920 | return -EINVAL; | |
921 | ||
922 | ret = lttng_metadata_printf(session, | |
923 | "stream {\n" | |
924 | " id = %u;\n" | |
925 | " event.header := %s;\n" | |
926 | " packet.context := struct packet_context;\n", | |
927 | chan->chan_id, | |
b623cb6a | 928 | chan->header_type == LTTNG_UST_CTL_CHANNEL_HEADER_COMPACT ? |
d0b96690 DG |
929 | "struct event_header_compact" : |
930 | "struct event_header_large"); | |
0d32d1a9 | 931 | if (ret) { |
e4589ae2 | 932 | return ret; |
0d32d1a9 | 933 | } |
d0b96690 DG |
934 | |
935 | if (chan->ctx_fields) { | |
936 | ret = lttng_metadata_printf(session, | |
937 | " event.context := struct {\n"); | |
0d32d1a9 | 938 | if (ret) { |
e4589ae2 | 939 | return ret; |
0d32d1a9 | 940 | } |
d0b96690 DG |
941 | } |
942 | ret = _lttng_context_metadata_statedump(session, | |
943 | chan->nr_ctx_fields, | |
944 | chan->ctx_fields); | |
0d32d1a9 | 945 | if (ret) { |
e4589ae2 | 946 | return ret; |
0d32d1a9 | 947 | } |
d0b96690 DG |
948 | if (chan->ctx_fields) { |
949 | ret = lttng_metadata_printf(session, | |
950 | " };\n"); | |
0d32d1a9 | 951 | if (ret) { |
e4589ae2 | 952 | return ret; |
0d32d1a9 | 953 | } |
d0b96690 DG |
954 | } |
955 | ||
956 | ret = lttng_metadata_printf(session, | |
957 | "};\n\n"); | |
e4589ae2 SM |
958 | if (ret) { |
959 | return ret; | |
960 | } | |
961 | ||
7972aab2 DG |
962 | /* Flag success of metadata dump. */ |
963 | chan->metadata_dumped = 1; | |
d0b96690 | 964 | |
bacc39bb SM |
965 | /* |
966 | * Output the metadata of any existing event. | |
967 | * | |
968 | * Sort the events by id. This is not necessary, but it's nice to have | |
969 | * a more predictable order in the metadata file. | |
970 | */ | |
971 | std::vector<ust_registry_event *> events; | |
972 | { | |
973 | cds_lfht_iter event_iter; | |
974 | ust_registry_event *event; | |
975 | cds_lfht_for_each_entry(chan->events->ht, &event_iter, event, | |
976 | node.node) { | |
977 | events.push_back(event); | |
978 | } | |
979 | } | |
980 | ||
981 | std::sort(events.begin(), events.end(), | |
982 | [] (ust_registry_event *a, ust_registry_event *b) { | |
983 | return a->id < b->id; | |
984 | }); | |
985 | ||
986 | for (ust_registry_event *event : events) { | |
987 | ust_metadata_event_statedump(session, chan, event); | |
988 | } | |
989 | ||
e4589ae2 | 990 | return 0; |
d0b96690 DG |
991 | } |
992 | ||
993 | static | |
aeeb48c6 | 994 | int _lttng_stream_packet_context_declare(ust_registry_session *session) |
d0b96690 DG |
995 | { |
996 | return lttng_metadata_printf(session, | |
997 | "struct packet_context {\n" | |
998 | " uint64_clock_monotonic_t timestamp_begin;\n" | |
999 | " uint64_clock_monotonic_t timestamp_end;\n" | |
1000 | " uint64_t content_size;\n" | |
1001 | " uint64_t packet_size;\n" | |
0793bcc6 | 1002 | " uint64_t packet_seq_num;\n" |
d0b96690 DG |
1003 | " unsigned long events_discarded;\n" |
1004 | " uint32_t cpu_id;\n" | |
1005 | "};\n\n" | |
1006 | ); | |
1007 | } | |
1008 | ||
1009 | /* | |
1010 | * Compact header: | |
1011 | * id: range: 0 - 30. | |
1012 | * id 31 is reserved to indicate an extended header. | |
1013 | * | |
1014 | * Large header: | |
1015 | * id: range: 0 - 65534. | |
1016 | * id 65535 is reserved to indicate an extended header. | |
1017 | */ | |
1018 | static | |
aeeb48c6 | 1019 | int _lttng_event_header_declare(ust_registry_session *session) |
d0b96690 DG |
1020 | { |
1021 | return lttng_metadata_printf(session, | |
1022 | "struct event_header_compact {\n" | |
1023 | " enum : uint5_t { compact = 0 ... 30, extended = 31 } id;\n" | |
1024 | " variant <id> {\n" | |
1025 | " struct {\n" | |
1026 | " uint27_clock_monotonic_t timestamp;\n" | |
1027 | " } compact;\n" | |
1028 | " struct {\n" | |
1029 | " uint32_t id;\n" | |
1030 | " uint64_clock_monotonic_t timestamp;\n" | |
1031 | " } extended;\n" | |
1032 | " } v;\n" | |
1033 | "} align(%u);\n" | |
1034 | "\n" | |
1035 | "struct event_header_large {\n" | |
1036 | " enum : uint16_t { compact = 0 ... 65534, extended = 65535 } id;\n" | |
1037 | " variant <id> {\n" | |
1038 | " struct {\n" | |
1039 | " uint32_clock_monotonic_t timestamp;\n" | |
1040 | " } compact;\n" | |
1041 | " struct {\n" | |
1042 | " uint32_t id;\n" | |
1043 | " uint64_clock_monotonic_t timestamp;\n" | |
1044 | " } extended;\n" | |
1045 | " } v;\n" | |
1046 | "} align(%u);\n\n", | |
aeeb48c6 JG |
1047 | session->_uint32_t_alignment, |
1048 | session->_uint16_t_alignment | |
d0b96690 DG |
1049 | ); |
1050 | } | |
1051 | ||
8de88061 | 1052 | static |
aeeb48c6 | 1053 | int print_metadata_session_information(ust_registry_session *registry) |
8de88061 JR |
1054 | { |
1055 | int ret; | |
1056 | struct ltt_session *session = NULL; | |
1057 | char creation_datetime[ISO8601_STR_LEN]; | |
1058 | ||
1059 | rcu_read_lock(); | |
aeeb48c6 | 1060 | session = session_find_by_id(registry->_tracing_id); |
8de88061 JR |
1061 | if (!session) { |
1062 | ret = -1; | |
1063 | goto error; | |
1064 | } | |
1065 | ||
1066 | /* Print the trace name */ | |
1067 | ret = lttng_metadata_printf(registry, " trace_name = \""); | |
1068 | if (ret) { | |
1069 | goto error; | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | * This is necessary since the creation time is present in the session | |
1074 | * name when it is generated. | |
1075 | */ | |
1076 | if (session->has_auto_generated_name) { | |
1077 | ret = print_escaped_ctf_string(registry, DEFAULT_SESSION_NAME); | |
1078 | } else { | |
1079 | ret = print_escaped_ctf_string(registry, session->name); | |
1080 | } | |
1081 | if (ret) { | |
1082 | goto error; | |
1083 | } | |
1084 | ||
1085 | ret = lttng_metadata_printf(registry, "\";\n"); | |
1086 | if (ret) { | |
1087 | goto error; | |
1088 | } | |
1089 | ||
1090 | /* Prepare creation time */ | |
1091 | ret = time_to_iso8601_str(session->creation_time, creation_datetime, | |
1092 | sizeof(creation_datetime)); | |
1093 | if (ret) { | |
1094 | goto error; | |
1095 | } | |
1096 | ||
1097 | /* Output the reste of the information */ | |
1098 | ret = lttng_metadata_printf(registry, | |
1099 | " trace_creation_datetime = \"%s\";\n" | |
1100 | " hostname = \"%s\";\n", | |
1101 | creation_datetime, session->hostname); | |
1102 | if (ret) { | |
1103 | goto error; | |
1104 | } | |
1105 | ||
1106 | error: | |
1107 | if (session) { | |
1108 | session_put(session); | |
1109 | } | |
1110 | rcu_read_unlock(); | |
1111 | return ret; | |
1112 | } | |
1113 | ||
1114 | static | |
aeeb48c6 | 1115 | int print_metadata_app_information(ust_registry_session *registry) |
8de88061 | 1116 | { |
aeeb48c6 JG |
1117 | if (registry->get_buffering_scheme() != LTTNG_BUFFER_PER_PID) { |
1118 | return 0; | |
8de88061 JR |
1119 | } |
1120 | ||
aeeb48c6 JG |
1121 | const auto *per_pid_session = static_cast<const ust_registry_session_per_pid *>(registry); |
1122 | ||
1123 | char datetime[ISO8601_STR_LEN]; | |
1124 | int ret = time_to_iso8601_str( | |
1125 | per_pid_session->_app_creation_time, datetime, sizeof(datetime)); | |
8de88061 | 1126 | if (ret) { |
aeeb48c6 | 1127 | return ret; |
8de88061 JR |
1128 | } |
1129 | ||
1130 | ret = lttng_metadata_printf(registry, | |
aeeb48c6 JG |
1131 | " tracer_patchlevel = %u;\n" |
1132 | " vpid = %d;\n" | |
1133 | " procname = \"%s\";\n" | |
1134 | " vpid_datetime = \"%s\";\n", | |
1135 | per_pid_session->_tracer_patch_level_version, (int) per_pid_session->_vpid, | |
1136 | per_pid_session->_procname.c_str(), datetime); | |
8de88061 JR |
1137 | return ret; |
1138 | } | |
1139 | ||
d0b96690 DG |
1140 | /* |
1141 | * Should be called with session registry mutex held. | |
1142 | */ | |
aeeb48c6 | 1143 | int ust_metadata_session_statedump(ust_registry_session *session) |
d0b96690 | 1144 | { |
d0b96690 | 1145 | int ret = 0; |
b3647fb8 | 1146 | char trace_uuid_str[LTTNG_UUID_STR_LEN]; |
d0b96690 | 1147 | |
a0377dfe | 1148 | LTTNG_ASSERT(session); |
7972aab2 | 1149 | |
b3647fb8 | 1150 | lttng_uuid_to_str(session->_uuid, trace_uuid_str); |
d0b96690 | 1151 | |
d7ba1388 MD |
1152 | /* For crash ABI */ |
1153 | ret = lttng_metadata_printf(session, | |
1154 | "/* CTF %u.%u */\n\n", | |
1155 | CTF_SPEC_MAJOR, | |
1156 | CTF_SPEC_MINOR); | |
1157 | if (ret) { | |
1158 | goto end; | |
1159 | } | |
1160 | ||
d0b96690 DG |
1161 | ret = lttng_metadata_printf(session, |
1162 | "typealias integer { size = 8; align = %u; signed = false; } := uint8_t;\n" | |
1163 | "typealias integer { size = 16; align = %u; signed = false; } := uint16_t;\n" | |
1164 | "typealias integer { size = 32; align = %u; signed = false; } := uint32_t;\n" | |
1165 | "typealias integer { size = 64; align = %u; signed = false; } := uint64_t;\n" | |
1166 | "typealias integer { size = %u; align = %u; signed = false; } := unsigned long;\n" | |
1167 | "typealias integer { size = 5; align = 1; signed = false; } := uint5_t;\n" | |
1168 | "typealias integer { size = 27; align = 1; signed = false; } := uint27_t;\n" | |
1169 | "\n" | |
1170 | "trace {\n" | |
1171 | " major = %u;\n" | |
1172 | " minor = %u;\n" | |
1173 | " uuid = \"%s\";\n" | |
1174 | " byte_order = %s;\n" | |
1175 | " packet.header := struct {\n" | |
1176 | " uint32_t magic;\n" | |
1177 | " uint8_t uuid[16];\n" | |
1178 | " uint32_t stream_id;\n" | |
0793bcc6 | 1179 | " uint64_t stream_instance_id;\n" |
d0b96690 DG |
1180 | " };\n" |
1181 | "};\n\n", | |
aeeb48c6 JG |
1182 | session->_uint8_t_alignment, |
1183 | session->_uint16_t_alignment, | |
1184 | session->_uint32_t_alignment, | |
1185 | session->_uint64_t_alignment, | |
1186 | session->_bits_per_long, | |
1187 | session->_long_alignment, | |
d0b96690 DG |
1188 | CTF_SPEC_MAJOR, |
1189 | CTF_SPEC_MINOR, | |
b3647fb8 | 1190 | trace_uuid_str, |
aeeb48c6 | 1191 | session->_byte_order == BIG_ENDIAN ? "be" : "le" |
d0b96690 | 1192 | ); |
0d32d1a9 | 1193 | if (ret) { |
d0b96690 | 1194 | goto end; |
0d32d1a9 | 1195 | } |
d0b96690 | 1196 | |
d0b96690 DG |
1197 | ret = lttng_metadata_printf(session, |
1198 | "env {\n" | |
d0b96690 DG |
1199 | " domain = \"ust\";\n" |
1200 | " tracer_name = \"lttng-ust\";\n" | |
1201 | " tracer_major = %u;\n" | |
8de88061 JR |
1202 | " tracer_minor = %u;\n" |
1203 | " tracer_buffering_scheme = \"%s\";\n" | |
1204 | " tracer_buffering_id = %u;\n" | |
1205 | " architecture_bit_width = %u;\n", | |
aeeb48c6 JG |
1206 | session->_app_tracer_version_major, session->_app_tracer_version_minor, |
1207 | session->get_buffering_scheme() == LTTNG_BUFFER_PER_PID ? "pid" : "uid", | |
1208 | session->get_buffering_scheme() == LTTNG_BUFFER_PER_PID ? | |
1209 | (int) static_cast<ust_registry_session_per_pid *>(session)->_vpid : | |
1210 | (int) static_cast<ust_registry_session_per_uid *>(session)->_tracing_uid, | |
1211 | session->_bits_per_long); | |
8de88061 JR |
1212 | if (ret) { |
1213 | goto end; | |
1214 | } | |
1215 | ||
1216 | ret = print_metadata_session_information(session); | |
1217 | if (ret) { | |
d0b96690 | 1218 | goto end; |
8de88061 | 1219 | } |
d0b96690 DG |
1220 | |
1221 | /* | |
1222 | * If per-application registry, we can output extra information | |
1223 | * about the application. | |
1224 | */ | |
aeeb48c6 | 1225 | ret = print_metadata_app_information(session); |
8de88061 JR |
1226 | if (ret) { |
1227 | goto end; | |
d0b96690 DG |
1228 | } |
1229 | ||
1230 | ret = lttng_metadata_printf(session, | |
1231 | "};\n\n" | |
1232 | ); | |
0d32d1a9 | 1233 | if (ret) { |
d0b96690 | 1234 | goto end; |
0d32d1a9 | 1235 | } |
d0b96690 | 1236 | |
b3647fb8 JG |
1237 | try { |
1238 | const lttng::ust::clock_attributes_sample clock; | |
d0b96690 | 1239 | |
d0b96690 | 1240 | ret = lttng_metadata_printf(session, |
b3647fb8 JG |
1241 | "clock {\n" |
1242 | " name = \"%s\";\n", | |
1243 | clock._name.c_str()); | |
0d32d1a9 | 1244 | if (ret) { |
d0b96690 | 1245 | goto end; |
0d32d1a9 | 1246 | } |
d0b96690 | 1247 | |
b3647fb8 JG |
1248 | if (clock._uuid) { |
1249 | char clock_uuid_str[LTTNG_UUID_STR_LEN]; | |
d0b96690 | 1250 | |
b3647fb8 JG |
1251 | lttng_uuid_to_str(*clock._uuid, clock_uuid_str); |
1252 | ret = lttng_metadata_printf( | |
1253 | session, " uuid = \"%s\";\n", clock_uuid_str); | |
1254 | if (ret) { | |
1255 | goto end; | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | ret = lttng_metadata_printf(session, | |
1260 | " description = \"%s\";\n" | |
1261 | " freq = %" PRIu64 "; /* Frequency, in Hz */\n" | |
1262 | " /* clock value offset from Epoch is: offset * (1/freq) */\n" | |
1263 | " offset = %" PRId64 ";\n" | |
1264 | "};\n\n", | |
1265 | clock._description.c_str(), clock._frequency, clock._offset); | |
1266 | if (ret) { | |
1267 | goto end; | |
1268 | } | |
1269 | ||
1270 | ret = lttng_metadata_printf(session, | |
1271 | "typealias integer {\n" | |
1272 | " size = 27; align = 1; signed = false;\n" | |
1273 | " map = clock.%s.value;\n" | |
1274 | "} := uint27_clock_monotonic_t;\n" | |
1275 | "\n" | |
1276 | "typealias integer {\n" | |
1277 | " size = 32; align = %u; signed = false;\n" | |
1278 | " map = clock.%s.value;\n" | |
1279 | "} := uint32_clock_monotonic_t;\n" | |
1280 | "\n" | |
1281 | "typealias integer {\n" | |
1282 | " size = 64; align = %u; signed = false;\n" | |
1283 | " map = clock.%s.value;\n" | |
1284 | "} := uint64_clock_monotonic_t;\n\n", | |
1285 | clock._name.c_str(), session->_uint32_t_alignment, | |
1286 | clock._name.c_str(), session->_uint64_t_alignment, | |
1287 | clock._name.c_str()); | |
1288 | if (ret) { | |
1289 | goto end; | |
1290 | } | |
1291 | } catch (const std::exception &ex) { | |
1292 | ERR("Failed to serialize clock description: %s", ex.what()); | |
1293 | ret = -1; | |
d0b96690 | 1294 | goto end; |
0d32d1a9 | 1295 | } |
d0b96690 DG |
1296 | |
1297 | ret = _lttng_stream_packet_context_declare(session); | |
0d32d1a9 | 1298 | if (ret) { |
d0b96690 | 1299 | goto end; |
0d32d1a9 | 1300 | } |
d0b96690 DG |
1301 | |
1302 | ret = _lttng_event_header_declare(session); | |
0d32d1a9 | 1303 | if (ret) { |
d0b96690 | 1304 | goto end; |
0d32d1a9 | 1305 | } |
d0b96690 DG |
1306 | |
1307 | end: | |
1308 | return ret; | |
1309 | } |