Commit | Line | Data |
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d28fcdec PP |
1 | /* |
2 | * event-field-value.c | |
3 | * | |
4 | * Linux Trace Toolkit Control Library | |
5 | * | |
6 | * Copyright (C) 2020 Philippe Proulx <pproulx@efficios.com> | |
7 | * | |
8 | * SPDX-License-Identifier: LGPL-2.1-only | |
9 | * | |
10 | */ | |
11 | ||
12 | #define _LGPL_SOURCE | |
d28fcdec PP |
13 | #include <stddef.h> |
14 | #include <stdbool.h> | |
15 | ||
c9e313bc SM |
16 | #include <common/error.hpp> |
17 | #include <common/macros.hpp> | |
18 | #include <lttng/event-field-value-internal.hpp> | |
d28fcdec PP |
19 | |
20 | static | |
21 | struct lttng_event_field_value *create_empty_field_val( | |
22 | enum lttng_event_field_value_type type, size_t size) | |
23 | { | |
24 | struct lttng_event_field_value *field_val; | |
25 | ||
64803277 | 26 | field_val = zmalloc<lttng_event_field_value>(size); |
d28fcdec PP |
27 | if (!field_val) { |
28 | goto end; | |
29 | } | |
30 | ||
31 | field_val->type = type; | |
32 | ||
33 | end: | |
34 | return field_val; | |
35 | } | |
36 | ||
d28fcdec PP |
37 | struct lttng_event_field_value *lttng_event_field_value_uint_create( |
38 | uint64_t val) | |
39 | { | |
40 | struct lttng_event_field_value_uint *field_val; | |
41 | ||
0114db0e | 42 | field_val = lttng::utils::container_of(create_empty_field_val( |
d28fcdec PP |
43 | LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_INT, |
44 | sizeof(*field_val)), | |
0114db0e | 45 | <tng_event_field_value_uint::parent); |
d28fcdec PP |
46 | if (!field_val) { |
47 | goto error; | |
48 | } | |
49 | ||
50 | field_val->val = val; | |
51 | goto end; | |
52 | ||
53 | error: | |
54 | lttng_event_field_value_destroy(&field_val->parent); | |
55 | ||
56 | end: | |
57 | return &field_val->parent; | |
58 | } | |
59 | ||
d28fcdec PP |
60 | struct lttng_event_field_value *lttng_event_field_value_int_create( |
61 | int64_t val) | |
62 | { | |
63 | struct lttng_event_field_value_int *field_val; | |
64 | ||
0114db0e | 65 | field_val = lttng::utils::container_of(create_empty_field_val( |
d28fcdec PP |
66 | LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_INT, |
67 | sizeof(*field_val)), | |
0114db0e | 68 | <tng_event_field_value_int::parent); |
d28fcdec PP |
69 | if (!field_val) { |
70 | goto error; | |
71 | } | |
72 | ||
73 | field_val->val = val; | |
74 | goto end; | |
75 | ||
76 | error: | |
77 | lttng_event_field_value_destroy(&field_val->parent); | |
78 | ||
79 | end: | |
80 | return &field_val->parent; | |
81 | } | |
82 | ||
83 | static | |
84 | struct lttng_event_field_value_enum *create_enum_field_val( | |
85 | enum lttng_event_field_value_type type, size_t size) | |
86 | { | |
87 | struct lttng_event_field_value_enum *field_val; | |
88 | ||
0114db0e JG |
89 | field_val = lttng::utils::container_of(create_empty_field_val(type, size), |
90 | <tng_event_field_value_enum::parent); | |
d28fcdec PP |
91 | if (!field_val) { |
92 | goto error; | |
93 | } | |
94 | ||
95 | lttng_dynamic_pointer_array_init(&field_val->labels, free); | |
96 | goto end; | |
97 | ||
98 | error: | |
99 | lttng_event_field_value_destroy(&field_val->parent); | |
100 | ||
101 | end: | |
102 | return field_val; | |
103 | } | |
104 | ||
d28fcdec PP |
105 | struct lttng_event_field_value *lttng_event_field_value_enum_uint_create( |
106 | uint64_t val) | |
107 | { | |
108 | struct lttng_event_field_value_enum_uint *field_val; | |
109 | ||
0114db0e | 110 | field_val = lttng::utils::container_of(create_enum_field_val( |
d28fcdec PP |
111 | LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM, |
112 | sizeof(*field_val)), | |
0114db0e | 113 | <tng_event_field_value_enum_uint::parent); |
d28fcdec PP |
114 | if (!field_val) { |
115 | goto error; | |
116 | } | |
117 | ||
118 | field_val->val = val; | |
119 | goto end; | |
120 | ||
121 | error: | |
122 | lttng_event_field_value_destroy(&field_val->parent.parent); | |
123 | ||
124 | end: | |
125 | return &field_val->parent.parent; | |
126 | } | |
127 | ||
d28fcdec PP |
128 | struct lttng_event_field_value *lttng_event_field_value_enum_int_create( |
129 | int64_t val) | |
130 | { | |
131 | struct lttng_event_field_value_enum_int *field_val; | |
132 | ||
0114db0e | 133 | field_val = lttng::utils::container_of(create_enum_field_val( |
d28fcdec PP |
134 | LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM, |
135 | sizeof(*field_val)), | |
0114db0e | 136 | <tng_event_field_value_enum_int::parent); |
d28fcdec PP |
137 | if (!field_val) { |
138 | goto error; | |
139 | } | |
140 | ||
141 | field_val->val = val; | |
142 | goto end; | |
143 | ||
144 | error: | |
145 | lttng_event_field_value_destroy(&field_val->parent.parent); | |
146 | ||
147 | end: | |
148 | return &field_val->parent.parent; | |
149 | } | |
150 | ||
d28fcdec PP |
151 | struct lttng_event_field_value *lttng_event_field_value_real_create(double val) |
152 | { | |
0114db0e | 153 | struct lttng_event_field_value_real *field_val = lttng::utils::container_of( |
d28fcdec PP |
154 | create_empty_field_val( |
155 | LTTNG_EVENT_FIELD_VALUE_TYPE_REAL, | |
156 | sizeof(*field_val)), | |
0114db0e | 157 | <tng_event_field_value_real::parent); |
d28fcdec PP |
158 | |
159 | if (!field_val) { | |
160 | goto error; | |
161 | } | |
162 | ||
163 | field_val->val = val; | |
164 | goto end; | |
165 | ||
166 | error: | |
167 | lttng_event_field_value_destroy(&field_val->parent); | |
168 | ||
169 | end: | |
170 | return &field_val->parent; | |
171 | } | |
172 | ||
d28fcdec PP |
173 | struct lttng_event_field_value *lttng_event_field_value_string_create_with_size( |
174 | const char *val, size_t size) | |
175 | { | |
0114db0e | 176 | struct lttng_event_field_value_string *field_val = lttng::utils::container_of( |
d28fcdec PP |
177 | create_empty_field_val( |
178 | LTTNG_EVENT_FIELD_VALUE_TYPE_STRING, | |
179 | sizeof(*field_val)), | |
0114db0e | 180 | <tng_event_field_value_string::parent); |
d28fcdec PP |
181 | |
182 | if (!field_val) { | |
183 | goto error; | |
184 | } | |
185 | ||
ceaa850a MD |
186 | if (size) { |
187 | LTTNG_ASSERT(val); | |
188 | field_val->val = strndup(val, size); | |
189 | } else { | |
190 | /* | |
191 | * User code do not expect a NULL string pointer. Populate with | |
192 | * an empty string when length is 0. | |
193 | */ | |
194 | field_val->val = strdup(""); | |
195 | } | |
d28fcdec PP |
196 | if (!field_val->val) { |
197 | goto error; | |
198 | } | |
199 | ||
200 | goto end; | |
201 | ||
202 | error: | |
203 | lttng_event_field_value_destroy(&field_val->parent); | |
204 | ||
205 | end: | |
206 | return &field_val->parent; | |
207 | } | |
208 | ||
d28fcdec PP |
209 | struct lttng_event_field_value *lttng_event_field_value_string_create( |
210 | const char *val) | |
211 | { | |
a0377dfe | 212 | LTTNG_ASSERT(val); |
d28fcdec PP |
213 | return lttng_event_field_value_string_create_with_size(val, |
214 | strlen(val)); | |
215 | } | |
216 | ||
217 | static | |
218 | void destroy_field_val(void *field_val) | |
219 | { | |
a6bc4ca9 | 220 | lttng_event_field_value_destroy((lttng_event_field_value *) field_val); |
d28fcdec PP |
221 | } |
222 | ||
d28fcdec PP |
223 | struct lttng_event_field_value *lttng_event_field_value_array_create(void) |
224 | { | |
0114db0e | 225 | struct lttng_event_field_value_array *field_val = lttng::utils::container_of( |
d28fcdec PP |
226 | create_empty_field_val( |
227 | LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY, | |
228 | sizeof(*field_val)), | |
0114db0e | 229 | <tng_event_field_value_array::parent); |
d28fcdec PP |
230 | |
231 | if (!field_val) { | |
232 | goto error; | |
233 | } | |
234 | ||
235 | lttng_dynamic_pointer_array_init(&field_val->elems, destroy_field_val); | |
236 | goto end; | |
237 | ||
238 | error: | |
239 | lttng_event_field_value_destroy(&field_val->parent); | |
240 | ||
241 | end: | |
242 | return &field_val->parent; | |
243 | } | |
244 | ||
d28fcdec PP |
245 | void lttng_event_field_value_destroy(struct lttng_event_field_value *field_val) |
246 | { | |
247 | if (!field_val) { | |
248 | goto end; | |
249 | } | |
250 | ||
251 | switch (field_val->type) { | |
252 | case LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM: | |
253 | case LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM: | |
254 | { | |
255 | struct lttng_event_field_value_enum *enum_field_val = | |
0114db0e JG |
256 | lttng::utils::container_of(field_val, |
257 | <tng_event_field_value_enum::parent); | |
d28fcdec PP |
258 | |
259 | lttng_dynamic_pointer_array_reset(&enum_field_val->labels); | |
260 | break; | |
261 | } | |
262 | case LTTNG_EVENT_FIELD_VALUE_TYPE_STRING: | |
263 | { | |
264 | struct lttng_event_field_value_string *str_field_val = | |
0114db0e JG |
265 | lttng::utils::container_of(field_val, |
266 | <tng_event_field_value_string::parent); | |
d28fcdec PP |
267 | |
268 | free(str_field_val->val); | |
269 | break; | |
270 | } | |
271 | case LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY: | |
272 | { | |
273 | struct lttng_event_field_value_array *array_field_expr = | |
0114db0e JG |
274 | lttng::utils::container_of(field_val, |
275 | <tng_event_field_value_array::parent); | |
d28fcdec PP |
276 | |
277 | lttng_dynamic_pointer_array_reset(&array_field_expr->elems); | |
278 | break; | |
279 | } | |
280 | default: | |
281 | break; | |
282 | } | |
283 | ||
284 | free(field_val); | |
285 | ||
286 | end: | |
287 | return; | |
288 | } | |
289 | ||
d28fcdec PP |
290 | int lttng_event_field_value_enum_append_label_with_size( |
291 | struct lttng_event_field_value *field_val, | |
292 | const char *label, size_t size) | |
293 | { | |
294 | int ret; | |
295 | char *new_label; | |
296 | ||
a0377dfe FD |
297 | LTTNG_ASSERT(field_val); |
298 | LTTNG_ASSERT(label); | |
d28fcdec PP |
299 | new_label = strndup(label, size); |
300 | if (!new_label) { | |
301 | ret = -1; | |
302 | goto end; | |
303 | } | |
304 | ||
305 | ret = lttng_dynamic_pointer_array_add_pointer( | |
0114db0e JG |
306 | <tng::utils::container_of(field_val, |
307 | <tng_event_field_value_enum::parent)->labels, | |
d28fcdec PP |
308 | new_label); |
309 | if (ret == 0) { | |
310 | new_label = NULL; | |
311 | } | |
312 | ||
313 | end: | |
314 | free(new_label); | |
315 | return ret; | |
316 | } | |
317 | ||
d28fcdec PP |
318 | int lttng_event_field_value_enum_append_label( |
319 | struct lttng_event_field_value *field_val, | |
320 | const char *label) | |
321 | { | |
a0377dfe | 322 | LTTNG_ASSERT(label); |
d28fcdec PP |
323 | return lttng_event_field_value_enum_append_label_with_size(field_val, |
324 | label, strlen(label)); | |
325 | } | |
326 | ||
d28fcdec PP |
327 | int lttng_event_field_value_array_append( |
328 | struct lttng_event_field_value *array_field_val, | |
329 | struct lttng_event_field_value *field_val) | |
330 | { | |
a0377dfe FD |
331 | LTTNG_ASSERT(array_field_val); |
332 | LTTNG_ASSERT(field_val); | |
d28fcdec | 333 | return lttng_dynamic_pointer_array_add_pointer( |
0114db0e JG |
334 | <tng::utils::container_of(array_field_val, |
335 | <tng_event_field_value_array::parent)->elems, | |
d28fcdec PP |
336 | field_val); |
337 | } | |
338 | ||
d28fcdec PP |
339 | int lttng_event_field_value_array_append_unavailable( |
340 | struct lttng_event_field_value *array_field_val) | |
341 | { | |
a0377dfe | 342 | LTTNG_ASSERT(array_field_val); |
d28fcdec | 343 | return lttng_dynamic_pointer_array_add_pointer( |
0114db0e JG |
344 | <tng::utils::container_of(array_field_val, |
345 | <tng_event_field_value_array::parent)->elems, | |
d28fcdec PP |
346 | NULL); |
347 | } | |
348 | ||
349 | enum lttng_event_field_value_type lttng_event_field_value_get_type( | |
350 | const struct lttng_event_field_value *field_val) | |
351 | { | |
352 | enum lttng_event_field_value_type type; | |
353 | ||
354 | if (!field_val) { | |
355 | type = LTTNG_EVENT_FIELD_VALUE_TYPE_INVALID; | |
356 | goto end; | |
357 | } | |
358 | ||
359 | type = field_val->type; | |
360 | ||
361 | end: | |
362 | return type; | |
363 | } | |
364 | ||
365 | enum lttng_event_field_value_status | |
366 | lttng_event_field_value_unsigned_int_get_value( | |
367 | const struct lttng_event_field_value *field_val, uint64_t *val) | |
368 | { | |
369 | enum lttng_event_field_value_status status; | |
370 | ||
371 | if (!field_val || !val) { | |
372 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
373 | goto end; | |
374 | } | |
375 | ||
376 | switch (field_val->type) { | |
377 | case LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_INT: | |
0114db0e JG |
378 | *val = lttng::utils::container_of(field_val, |
379 | <tng_event_field_value_uint::parent)->val; | |
d28fcdec PP |
380 | break; |
381 | case LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM: | |
9918e00a | 382 | { |
0114db0e JG |
383 | const struct lttng_event_field_value_enum *field_val_enum = |
384 | lttng::utils::container_of( | |
385 | field_val, <tng_event_field_value_enum::parent); | |
386 | const struct lttng_event_field_value_enum_uint *field_val_enum_uint = | |
387 | lttng::utils::container_of(field_val_enum, | |
388 | <tng_event_field_value_enum_uint::parent); | |
9918e00a | 389 | *val = field_val_enum_uint->val; |
d28fcdec | 390 | break; |
9918e00a | 391 | } |
d28fcdec PP |
392 | default: |
393 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
394 | goto end; | |
395 | } | |
396 | ||
397 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK; | |
398 | ||
399 | end: | |
400 | return status; | |
401 | } | |
402 | ||
403 | enum lttng_event_field_value_status | |
404 | lttng_event_field_value_signed_int_get_value( | |
405 | const struct lttng_event_field_value *field_val, int64_t *val) | |
406 | { | |
407 | enum lttng_event_field_value_status status; | |
408 | ||
409 | if (!field_val || !val) { | |
410 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
411 | goto end; | |
412 | } | |
413 | ||
414 | switch (field_val->type) { | |
415 | case LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_INT: | |
0114db0e JG |
416 | *val = lttng::utils::container_of(field_val, |
417 | <tng_event_field_value_int::parent)->val; | |
d28fcdec PP |
418 | break; |
419 | case LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM: | |
9918e00a | 420 | { |
0114db0e | 421 | const struct lttng_event_field_value_enum *field_val_enum = lttng::utils::container_of( |
9918e00a | 422 | field_val, |
0114db0e JG |
423 | <tng_event_field_value_enum::parent); |
424 | const struct lttng_event_field_value_enum_int *field_val_enum_uint = | |
425 | lttng::utils::container_of(field_val_enum, | |
426 | <tng_event_field_value_enum_int::parent); | |
9918e00a | 427 | *val = field_val_enum_uint->val; |
d28fcdec | 428 | break; |
9918e00a | 429 | } |
d28fcdec PP |
430 | default: |
431 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
432 | goto end; | |
433 | } | |
434 | ||
435 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK; | |
436 | ||
437 | end: | |
438 | return status; | |
439 | } | |
440 | ||
441 | enum lttng_event_field_value_status | |
442 | lttng_event_field_value_real_get_value( | |
443 | const struct lttng_event_field_value *field_val, double *val) | |
444 | { | |
445 | enum lttng_event_field_value_status status; | |
446 | ||
447 | if (!field_val || field_val->type != LTTNG_EVENT_FIELD_VALUE_TYPE_REAL || | |
448 | !val) { | |
449 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
450 | goto end; | |
451 | } | |
452 | ||
0114db0e JG |
453 | *val = lttng::utils::container_of(field_val, |
454 | <tng_event_field_value_real::parent)->val; | |
d28fcdec PP |
455 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK; |
456 | ||
457 | end: | |
458 | return status; | |
459 | } | |
460 | ||
461 | static | |
462 | bool is_enum_field_val(const struct lttng_event_field_value *field_val) | |
463 | { | |
464 | return field_val->type == LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM || | |
465 | field_val->type == LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM; | |
466 | } | |
467 | ||
468 | enum lttng_event_field_value_status | |
469 | lttng_event_field_value_enum_get_label_count( | |
470 | const struct lttng_event_field_value *field_val, | |
471 | unsigned int *count) | |
472 | { | |
473 | enum lttng_event_field_value_status status; | |
474 | ||
475 | if (!field_val || !is_enum_field_val(field_val) || !count) { | |
476 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
477 | goto end; | |
478 | } | |
479 | ||
480 | *count = (unsigned int) lttng_dynamic_pointer_array_get_count( | |
0114db0e JG |
481 | <tng::utils::container_of(field_val, |
482 | <tng_event_field_value_enum::parent)->labels); | |
d28fcdec PP |
483 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK; |
484 | ||
485 | end: | |
486 | return status; | |
487 | } | |
488 | ||
489 | const char *lttng_event_field_value_enum_get_label_at_index( | |
490 | const struct lttng_event_field_value *field_val, | |
491 | unsigned int index) | |
492 | { | |
493 | const char *ret; | |
494 | const struct lttng_event_field_value_enum *enum_field_val; | |
495 | ||
496 | if (!field_val || !is_enum_field_val(field_val)) { | |
497 | ret = NULL; | |
498 | goto end; | |
499 | } | |
500 | ||
0114db0e JG |
501 | enum_field_val = lttng::utils::container_of(field_val, |
502 | <tng_event_field_value_enum::parent); | |
d28fcdec PP |
503 | |
504 | if (index >= lttng_dynamic_pointer_array_get_count(&enum_field_val->labels)) { | |
505 | ret = NULL; | |
506 | goto end; | |
507 | } | |
508 | ||
a6bc4ca9 | 509 | ret = (const char *) lttng_dynamic_pointer_array_get_pointer(&enum_field_val->labels, |
d28fcdec PP |
510 | index); |
511 | ||
512 | end: | |
513 | return ret; | |
514 | } | |
515 | ||
7c920b63 PP |
516 | enum lttng_event_field_value_status lttng_event_field_value_string_get_value( |
517 | const struct lttng_event_field_value *field_val, | |
518 | const char **value) | |
d28fcdec | 519 | { |
7c920b63 | 520 | enum lttng_event_field_value_status status; |
d28fcdec PP |
521 | |
522 | if (!field_val || field_val->type != LTTNG_EVENT_FIELD_VALUE_TYPE_STRING) { | |
7c920b63 | 523 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; |
d28fcdec PP |
524 | goto end; |
525 | } | |
526 | ||
0114db0e JG |
527 | *value = lttng::utils::container_of(field_val, |
528 | <tng_event_field_value_string::parent)->val; | |
7c920b63 | 529 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK; |
d28fcdec PP |
530 | |
531 | end: | |
7c920b63 | 532 | return status; |
d28fcdec PP |
533 | } |
534 | ||
535 | enum lttng_event_field_value_status lttng_event_field_value_array_get_length( | |
536 | const struct lttng_event_field_value *field_val, | |
537 | unsigned int *length) | |
538 | { | |
539 | enum lttng_event_field_value_status status; | |
540 | ||
541 | if (!field_val || field_val->type != LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY || | |
542 | !length) { | |
543 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
544 | goto end; | |
545 | } | |
546 | ||
547 | *length = (unsigned int) lttng_dynamic_pointer_array_get_count( | |
0114db0e JG |
548 | <tng::utils::container_of(field_val, |
549 | <tng_event_field_value_array::parent)->elems); | |
d28fcdec PP |
550 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK; |
551 | ||
552 | end: | |
553 | return status; | |
554 | } | |
555 | ||
556 | enum lttng_event_field_value_status | |
557 | lttng_event_field_value_array_get_element_at_index( | |
558 | const struct lttng_event_field_value *field_val, | |
559 | unsigned int index, | |
560 | const struct lttng_event_field_value **elem_field_val) | |
561 | { | |
562 | enum lttng_event_field_value_status status; | |
563 | const struct lttng_event_field_value_array *array_field_val; | |
564 | ||
565 | if (!field_val || field_val->type != LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY || | |
566 | !elem_field_val) { | |
567 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
568 | goto end; | |
569 | } | |
570 | ||
0114db0e JG |
571 | array_field_val = lttng::utils::container_of( |
572 | field_val, <tng_event_field_value_array::parent); | |
d28fcdec PP |
573 | |
574 | if (index >= lttng_dynamic_pointer_array_get_count(&array_field_val->elems)) { | |
575 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID; | |
576 | goto end; | |
577 | } | |
578 | ||
a6bc4ca9 | 579 | *elem_field_val = (lttng_event_field_value *) lttng_dynamic_pointer_array_get_pointer( |
d28fcdec PP |
580 | &array_field_val->elems, index); |
581 | if (*elem_field_val) { | |
582 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK; | |
583 | } else { | |
584 | status = LTTNG_EVENT_FIELD_VALUE_STATUS_UNAVAILABLE; | |
585 | } | |
586 | ||
587 | end: | |
588 | return status; | |
589 | } |