Commit | Line | Data |
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44c440bc | 1 | /* |
0235b0db | 2 | * SPDX-License-Identifier: MIT |
44c440bc | 3 | * |
0235b0db MJ |
4 | * Copyright 2016-2018 Philippe Proulx <pproulx@efficios.com> |
5 | * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
44c440bc PP |
6 | */ |
7 | ||
4164020e | 8 | #define BT_COMP_LOG_SELF_COMP (ctx->self_comp) |
50f6fce8 | 9 | #define BT_COMP_LOG_SELF_COMP_CLASS (ctx->self_comp_class) |
4164020e SM |
10 | #define BT_LOG_OUTPUT_LEVEL (ctx->log_level) |
11 | #define BT_LOG_TAG "PLUGIN/CTF/META/RESOLVE" | |
d9c39b0a | 12 | #include "logging/comp-logging.h" |
44c440bc | 13 | |
3fadfbc0 | 14 | #include <babeltrace2/babeltrace.h> |
91d81473 | 15 | #include "common/macros.h" |
578e048b MJ |
16 | #include "common/assert.h" |
17 | #include "common/common.h" | |
44c440bc | 18 | #include <glib.h> |
c4f23e30 | 19 | #include <stdbool.h> |
44c440bc PP |
20 | #include <stdint.h> |
21 | #include <string.h> | |
22 | #include <inttypes.h> | |
23 | #include <limits.h> | |
24 | #include <stdlib.h> | |
25 | #include <glib.h> | |
26 | ||
087cd0f5 SM |
27 | #include "ctf-meta-visitors.hpp" |
28 | #include "logging.hpp" | |
44c440bc | 29 | |
4164020e | 30 | using field_class_stack_t = GPtrArray; |
44c440bc PP |
31 | |
32 | /* | |
33 | * A stack frame. | |
34 | * | |
5cd6d0e5 PP |
35 | * `fc` contains a compound field class (structure, variant, array, |
36 | * or sequence) and `index` indicates the index of the field class in | |
37 | * the upper frame (-1 for array and sequence field classes). `name` | |
38 | * indicates the name of the field class in the upper frame (empty | |
39 | * string for array and sequence field classes). | |
44c440bc | 40 | */ |
4164020e SM |
41 | struct field_class_stack_frame |
42 | { | |
43 | struct ctf_field_class *fc; | |
44 | int64_t index; | |
44c440bc PP |
45 | }; |
46 | ||
47 | /* | |
48 | * The current context of the resolving engine. | |
49 | */ | |
4164020e SM |
50 | struct resolve_context |
51 | { | |
52 | bt_logging_level log_level; | |
53 | ||
54 | /* Weak, exactly one of these must be set */ | |
55 | bt_self_component *self_comp; | |
56 | bt_self_component_class *self_comp_class; | |
57 | ||
58 | struct ctf_trace_class *tc; | |
59 | struct ctf_stream_class *sc; | |
60 | struct ctf_event_class *ec; | |
61 | ||
62 | struct | |
63 | { | |
64 | struct ctf_field_class *packet_header; | |
65 | struct ctf_field_class *packet_context; | |
66 | struct ctf_field_class *event_header; | |
67 | struct ctf_field_class *event_common_context; | |
68 | struct ctf_field_class *event_spec_context; | |
69 | struct ctf_field_class *event_payload; | |
70 | } scopes; | |
71 | ||
72 | /* Root scope being visited */ | |
73 | enum ctf_scope root_scope; | |
74 | field_class_stack_t *field_class_stack; | |
75 | struct ctf_field_class *cur_fc; | |
44c440bc PP |
76 | }; |
77 | ||
78 | /* TSDL dynamic scope prefixes as defined in CTF Section 7.3.2 */ | |
79 | static const char * const absolute_path_prefixes[] = { | |
4164020e SM |
80 | /* CTF_SCOPE_PACKET_HEADER */ "trace.packet.header.", |
81 | /* CTF_SCOPE_PACKET_CONTEXT */ "stream.packet.context.", | |
82 | /* CTF_SCOPE_EVENT_HEADER */ "stream.event.header.", | |
83 | /* CTF_SCOPE_EVENT_COMMON_CONTEXT */ "stream.event.context.", | |
84 | /* CTF_SCOPE_EVENT_SPECIFIC_CONTEXT */ "event.context.", | |
85 | /* CTF_SCOPE_EVENT_PAYLOAD */ "event.fields.", | |
44c440bc PP |
86 | }; |
87 | ||
88 | /* Number of path tokens used for the absolute prefixes */ | |
89 | static const uint64_t absolute_path_prefix_ptoken_counts[] = { | |
4164020e SM |
90 | /* CTF_SCOPE_PACKET_HEADER */ 3, |
91 | /* CTF_SCOPE_PACKET_CONTEXT */ 3, | |
92 | /* CTF_SCOPE_EVENT_HEADER */ 3, | |
93 | /* CTF_SCOPE_EVENT_COMMON_CONTEXT */ 3, | |
94 | /* CTF_SCOPE_EVENT_SPECIFIC_CONTEXT */ 2, | |
95 | /* CTF_SCOPE_EVENT_PAYLOAD */ 2, | |
44c440bc PP |
96 | }; |
97 | ||
4164020e | 98 | static void destroy_field_class_stack_frame(struct field_class_stack_frame *frame) |
44c440bc | 99 | { |
4164020e SM |
100 | if (!frame) { |
101 | return; | |
102 | } | |
44c440bc | 103 | |
4164020e | 104 | g_free(frame); |
44c440bc PP |
105 | } |
106 | ||
107 | /* | |
5cd6d0e5 | 108 | * Creates a class stack. |
44c440bc | 109 | */ |
4164020e | 110 | static field_class_stack_t *field_class_stack_create(void) |
44c440bc | 111 | { |
4164020e | 112 | return g_ptr_array_new_with_free_func((GDestroyNotify) destroy_field_class_stack_frame); |
44c440bc PP |
113 | } |
114 | ||
115 | /* | |
5cd6d0e5 | 116 | * Destroys a class stack. |
44c440bc | 117 | */ |
4164020e | 118 | static void field_class_stack_destroy(field_class_stack_t *stack) |
44c440bc | 119 | { |
4164020e SM |
120 | if (stack) { |
121 | g_ptr_array_free(stack, TRUE); | |
122 | } | |
44c440bc PP |
123 | } |
124 | ||
125 | /* | |
5cd6d0e5 | 126 | * Pushes a field class onto a class stack. |
44c440bc | 127 | */ |
4164020e SM |
128 | static int field_class_stack_push(field_class_stack_t *stack, struct ctf_field_class *fc, |
129 | struct resolve_context *ctx) | |
44c440bc | 130 | { |
4164020e SM |
131 | int ret = 0; |
132 | struct field_class_stack_frame *frame = NULL; | |
133 | ||
134 | if (!stack || !fc) { | |
135 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
136 | "Invalid parameter: stack or field class is `NULL`."); | |
137 | ret = -1; | |
138 | goto end; | |
139 | } | |
140 | ||
141 | frame = g_new0(struct field_class_stack_frame, 1); | |
142 | if (!frame) { | |
143 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Failed to allocate one field class stack frame."); | |
144 | ret = -1; | |
145 | goto end; | |
146 | } | |
147 | ||
148 | BT_COMP_LOGD("Pushing field class on context's stack: " | |
149 | "fc-addr=%p, stack-size-before=%u", | |
150 | fc, stack->len); | |
151 | frame->fc = fc; | |
152 | g_ptr_array_add(stack, frame); | |
44c440bc PP |
153 | |
154 | end: | |
4164020e | 155 | return ret; |
44c440bc PP |
156 | } |
157 | ||
158 | /* | |
159 | * Checks whether or not `stack` is empty. | |
160 | */ | |
4164020e | 161 | static bool field_class_stack_empty(field_class_stack_t *stack) |
44c440bc | 162 | { |
4164020e | 163 | return stack->len == 0; |
44c440bc PP |
164 | } |
165 | ||
166 | /* | |
167 | * Returns the number of frames in `stack`. | |
168 | */ | |
4164020e | 169 | static size_t field_class_stack_size(field_class_stack_t *stack) |
44c440bc | 170 | { |
4164020e | 171 | return stack->len; |
44c440bc PP |
172 | } |
173 | ||
174 | /* | |
175 | * Returns the top frame of `stack`. | |
176 | */ | |
4164020e | 177 | static struct field_class_stack_frame *field_class_stack_peek(field_class_stack_t *stack) |
44c440bc | 178 | { |
4164020e SM |
179 | BT_ASSERT(stack); |
180 | BT_ASSERT(!field_class_stack_empty(stack)); | |
44c440bc | 181 | |
4164020e | 182 | return (field_class_stack_frame *) g_ptr_array_index(stack, stack->len - 1); |
44c440bc PP |
183 | } |
184 | ||
185 | /* | |
186 | * Returns the frame at index `index` in `stack`. | |
187 | */ | |
4164020e SM |
188 | static struct field_class_stack_frame *field_class_stack_at(field_class_stack_t *stack, |
189 | size_t index) | |
44c440bc | 190 | { |
4164020e SM |
191 | BT_ASSERT(stack); |
192 | BT_ASSERT(index < stack->len); | |
44c440bc | 193 | |
4164020e | 194 | return (field_class_stack_frame *) g_ptr_array_index(stack, index); |
44c440bc PP |
195 | } |
196 | ||
197 | /* | |
198 | * Removes the top frame of `stack`. | |
199 | */ | |
4164020e | 200 | static void field_class_stack_pop(field_class_stack_t *stack, struct resolve_context *ctx) |
44c440bc | 201 | { |
4164020e SM |
202 | if (!field_class_stack_empty(stack)) { |
203 | /* | |
204 | * This will call the frame's destructor and free it, as | |
205 | * well as put its contained field class. | |
206 | */ | |
207 | BT_COMP_LOGD("Popping context's stack: stack-size-before=%u", stack->len); | |
208 | g_ptr_array_set_size(stack, stack->len - 1); | |
209 | } | |
44c440bc PP |
210 | } |
211 | ||
212 | /* | |
5cd6d0e5 | 213 | * Returns the scope field class of `scope` in the context `ctx`. |
44c440bc | 214 | */ |
4164020e SM |
215 | static struct ctf_field_class *borrow_class_from_ctx(struct resolve_context *ctx, |
216 | enum ctf_scope scope) | |
44c440bc | 217 | { |
4164020e SM |
218 | switch (scope) { |
219 | case CTF_SCOPE_PACKET_HEADER: | |
220 | return ctx->scopes.packet_header; | |
221 | case CTF_SCOPE_PACKET_CONTEXT: | |
222 | return ctx->scopes.packet_context; | |
223 | case CTF_SCOPE_EVENT_HEADER: | |
224 | return ctx->scopes.event_header; | |
225 | case CTF_SCOPE_EVENT_COMMON_CONTEXT: | |
226 | return ctx->scopes.event_common_context; | |
227 | case CTF_SCOPE_EVENT_SPECIFIC_CONTEXT: | |
228 | return ctx->scopes.event_spec_context; | |
229 | case CTF_SCOPE_EVENT_PAYLOAD: | |
230 | return ctx->scopes.event_payload; | |
231 | default: | |
232 | bt_common_abort(); | |
233 | } | |
234 | ||
235 | return NULL; | |
44c440bc PP |
236 | } |
237 | ||
238 | /* | |
239 | * Returns the CTF scope from a path string. May return -1 if the path | |
240 | * is found to be relative. | |
241 | */ | |
4164020e SM |
242 | static enum ctf_scope get_root_scope_from_absolute_pathstr(const char *pathstr, |
243 | struct resolve_context *ctx) | |
44c440bc | 244 | { |
4164020e SM |
245 | enum ctf_scope scope; |
246 | enum ctf_scope ret = CTF_SCOPE_PACKET_UNKNOWN; | |
247 | const size_t prefixes_count = sizeof(absolute_path_prefixes) / sizeof(*absolute_path_prefixes); | |
248 | ||
249 | for (scope = CTF_SCOPE_PACKET_HEADER; scope < CTF_SCOPE_PACKET_HEADER + prefixes_count; | |
250 | scope = (ctf_scope) (scope + 1)) { | |
251 | /* | |
252 | * Check if path string starts with a known absolute | |
253 | * path prefix. | |
254 | * | |
255 | * Refer to CTF 7.3.2 STATIC AND DYNAMIC SCOPES. | |
256 | */ | |
257 | if (strncmp(pathstr, absolute_path_prefixes[scope], | |
258 | strlen(absolute_path_prefixes[scope]))) { | |
259 | /* Prefix does not match: try the next one */ | |
260 | BT_COMP_LOGD("Prefix does not match: trying the next one: " | |
261 | "path=\"%s\", path-prefix=\"%s\", scope=%s", | |
262 | pathstr, absolute_path_prefixes[scope], ctf_scope_string(scope)); | |
263 | continue; | |
264 | } | |
265 | ||
266 | /* Found it! */ | |
267 | ret = scope; | |
268 | BT_COMP_LOGD("Found root scope from absolute path: " | |
269 | "path=\"%s\", scope=%s", | |
270 | pathstr, ctf_scope_string(scope)); | |
271 | goto end; | |
272 | } | |
44c440bc PP |
273 | |
274 | end: | |
4164020e | 275 | return ret; |
44c440bc PP |
276 | } |
277 | ||
278 | /* | |
279 | * Destroys a path token. | |
280 | */ | |
4164020e | 281 | static void ptokens_destroy_func(gpointer ptoken, gpointer data) |
44c440bc | 282 | { |
4164020e | 283 | g_string_free((GString *) ptoken, TRUE); |
44c440bc PP |
284 | } |
285 | ||
286 | /* | |
287 | * Destroys a path token list. | |
288 | */ | |
4164020e | 289 | static void ptokens_destroy(GList *ptokens) |
44c440bc | 290 | { |
4164020e SM |
291 | if (!ptokens) { |
292 | return; | |
293 | } | |
44c440bc | 294 | |
4164020e SM |
295 | g_list_foreach(ptokens, ptokens_destroy_func, NULL); |
296 | g_list_free(ptokens); | |
44c440bc PP |
297 | } |
298 | ||
299 | /* | |
300 | * Returns the string contained in a path token. | |
301 | */ | |
4164020e | 302 | static const char *ptoken_get_string(GList *ptoken) |
44c440bc | 303 | { |
4164020e | 304 | GString *tokenstr = (GString *) ptoken->data; |
44c440bc | 305 | |
4164020e | 306 | return tokenstr->str; |
44c440bc PP |
307 | } |
308 | ||
309 | /* | |
310 | * Converts a path string to a path token list, that is, splits the | |
311 | * individual words of a path string into a list of individual | |
312 | * strings. | |
313 | */ | |
4164020e | 314 | static GList *pathstr_to_ptokens(const char *pathstr, struct resolve_context *ctx) |
44c440bc | 315 | { |
4164020e SM |
316 | const char *at = pathstr; |
317 | const char *last = at; | |
318 | GList *ptokens = NULL; | |
44c440bc | 319 | |
4164020e SM |
320 | for (;;) { |
321 | if (*at == '.' || *at == '\0') { | |
322 | GString *tokenstr; | |
44c440bc | 323 | |
4164020e SM |
324 | if (at == last) { |
325 | /* Error: empty token */ | |
326 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Empty path token: path=\"%s\", pos=%u", | |
327 | pathstr, (unsigned int) (at - pathstr)); | |
328 | goto error; | |
329 | } | |
44c440bc | 330 | |
4164020e SM |
331 | tokenstr = g_string_new(NULL); |
332 | g_string_append_len(tokenstr, last, at - last); | |
333 | ptokens = g_list_append(ptokens, tokenstr); | |
334 | last = at + 1; | |
335 | } | |
44c440bc | 336 | |
4164020e SM |
337 | if (*at == '\0') { |
338 | break; | |
339 | } | |
44c440bc | 340 | |
4164020e SM |
341 | at++; |
342 | } | |
44c440bc | 343 | |
4164020e | 344 | return ptokens; |
44c440bc PP |
345 | |
346 | error: | |
4164020e SM |
347 | ptokens_destroy(ptokens); |
348 | return NULL; | |
44c440bc PP |
349 | } |
350 | ||
351 | /* | |
352 | * Converts a path token list to a field path object. The path token | |
5cd6d0e5 | 353 | * list is relative from `fc`. The index of the source looking for its |
45c51519 PP |
354 | * target within `fc` is indicated by `src_index`. This can be |
355 | * `INT64_MAX` if the source is contained in `fc`. | |
44c440bc PP |
356 | * |
357 | * `field_path` is an output parameter owned by the caller that must be | |
358 | * filled here. | |
359 | */ | |
4164020e SM |
360 | static int ptokens_to_field_path(GList *ptokens, struct ctf_field_path *field_path, |
361 | struct ctf_field_class *fc, int64_t src_index, | |
362 | struct resolve_context *ctx) | |
44c440bc | 363 | { |
4164020e SM |
364 | int ret = 0; |
365 | GList *cur_ptoken = ptokens; | |
366 | bool first_level_done = false; | |
367 | ||
368 | /* Locate target */ | |
369 | while (cur_ptoken) { | |
370 | int64_t child_index; | |
371 | struct ctf_field_class *child_fc; | |
372 | const char *ft_name = ptoken_get_string(cur_ptoken); | |
373 | ||
374 | BT_COMP_LOGD("Current path token: token=\"%s\"", ft_name); | |
375 | ||
376 | /* Find to which index corresponds the current path token */ | |
377 | if (fc->type == CTF_FIELD_CLASS_TYPE_ARRAY || fc->type == CTF_FIELD_CLASS_TYPE_SEQUENCE) { | |
378 | child_index = -1; | |
379 | } else { | |
380 | child_index = | |
381 | ctf_field_class_compound_get_field_class_index_from_orig_name(fc, ft_name); | |
382 | if (child_index < 0) { | |
383 | /* | |
384 | * Error: field name does not exist or | |
385 | * wrong current class. | |
386 | */ | |
387 | BT_COMP_LOGD("Cannot get index of field class: " | |
388 | "field-name=\"%s\", " | |
389 | "src-index=%" PRId64 ", " | |
390 | "child-index=%" PRId64 ", " | |
391 | "first-level-done=%d", | |
392 | ft_name, src_index, child_index, first_level_done); | |
393 | ret = -1; | |
394 | goto end; | |
395 | } else if (child_index > src_index && !first_level_done) { | |
396 | BT_COMP_LOGD("Child field class is located after source field class: " | |
397 | "field-name=\"%s\", " | |
398 | "src-index=%" PRId64 ", " | |
399 | "child-index=%" PRId64 ", " | |
400 | "first-level-done=%d", | |
401 | ft_name, src_index, child_index, first_level_done); | |
402 | ret = -1; | |
403 | goto end; | |
404 | } | |
405 | ||
406 | /* Next path token */ | |
407 | cur_ptoken = g_list_next(cur_ptoken); | |
408 | first_level_done = true; | |
409 | } | |
410 | ||
411 | /* Create new field path entry */ | |
412 | ctf_field_path_append_index(field_path, child_index); | |
413 | ||
414 | /* Get child field class */ | |
415 | child_fc = ctf_field_class_compound_borrow_field_class_by_index(fc, child_index); | |
416 | BT_ASSERT(child_fc); | |
417 | ||
418 | /* Move child class to current class */ | |
419 | fc = child_fc; | |
420 | } | |
44c440bc PP |
421 | |
422 | end: | |
4164020e | 423 | return ret; |
44c440bc PP |
424 | } |
425 | ||
426 | /* | |
427 | * Converts a known absolute path token list to a field path object | |
428 | * within the resolving context `ctx`. | |
429 | * | |
430 | * `field_path` is an output parameter owned by the caller that must be | |
431 | * filled here. | |
432 | */ | |
4164020e SM |
433 | static int absolute_ptokens_to_field_path(GList *ptokens, struct ctf_field_path *field_path, |
434 | struct resolve_context *ctx) | |
44c440bc | 435 | { |
4164020e SM |
436 | int ret = 0; |
437 | GList *cur_ptoken; | |
438 | struct ctf_field_class *fc; | |
439 | ||
440 | /* | |
441 | * Make sure we're not referring to a scope within a translated | |
442 | * object. | |
443 | */ | |
444 | switch (field_path->root) { | |
445 | case CTF_SCOPE_PACKET_HEADER: | |
446 | if (ctx->tc->is_translated) { | |
447 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Trace class is already translated: " | |
448 | "root-scope=%s", | |
449 | ctf_scope_string(field_path->root)); | |
450 | ret = -1; | |
451 | goto end; | |
452 | } | |
453 | ||
454 | break; | |
455 | case CTF_SCOPE_PACKET_CONTEXT: | |
456 | case CTF_SCOPE_EVENT_HEADER: | |
457 | case CTF_SCOPE_EVENT_COMMON_CONTEXT: | |
458 | if (!ctx->sc) { | |
459 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("No current stream class: " | |
460 | "root-scope=%s", | |
461 | ctf_scope_string(field_path->root)); | |
462 | ret = -1; | |
463 | goto end; | |
464 | } | |
465 | ||
466 | if (ctx->sc->is_translated) { | |
467 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Stream class is already translated: " | |
468 | "root-scope=%s", | |
469 | ctf_scope_string(field_path->root)); | |
470 | ret = -1; | |
471 | goto end; | |
472 | } | |
473 | ||
474 | break; | |
475 | case CTF_SCOPE_EVENT_SPECIFIC_CONTEXT: | |
476 | case CTF_SCOPE_EVENT_PAYLOAD: | |
477 | if (!ctx->ec) { | |
478 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("No current event class: " | |
479 | "root-scope=%s", | |
480 | ctf_scope_string(field_path->root)); | |
481 | ret = -1; | |
482 | goto end; | |
483 | } | |
484 | ||
485 | if (ctx->ec->is_translated) { | |
486 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Event class is already translated: " | |
487 | "root-scope=%s", | |
488 | ctf_scope_string(field_path->root)); | |
489 | ret = -1; | |
490 | goto end; | |
491 | } | |
492 | ||
493 | break; | |
494 | ||
495 | default: | |
496 | bt_common_abort(); | |
497 | } | |
498 | ||
499 | /* Skip absolute path tokens */ | |
500 | cur_ptoken = g_list_nth(ptokens, absolute_path_prefix_ptoken_counts[field_path->root]); | |
501 | ||
502 | /* Start with root class */ | |
503 | fc = borrow_class_from_ctx(ctx, field_path->root); | |
504 | if (!fc) { | |
505 | /* Error: root class is not available */ | |
506 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Root field class is not available: " | |
507 | "root-scope=%s", | |
508 | ctf_scope_string(field_path->root)); | |
509 | ret = -1; | |
510 | goto end; | |
511 | } | |
512 | ||
513 | /* Locate target */ | |
514 | ret = ptokens_to_field_path(cur_ptoken, field_path, fc, INT64_MAX, ctx); | |
44c440bc PP |
515 | |
516 | end: | |
4164020e | 517 | return ret; |
44c440bc PP |
518 | } |
519 | ||
520 | /* | |
521 | * Converts a known relative path token list to a field path object | |
522 | * within the resolving context `ctx`. | |
523 | * | |
524 | * `field_path` is an output parameter owned by the caller that must be | |
525 | * filled here. | |
526 | */ | |
4164020e SM |
527 | static int relative_ptokens_to_field_path(GList *ptokens, struct ctf_field_path *field_path, |
528 | struct resolve_context *ctx) | |
44c440bc | 529 | { |
4164020e SM |
530 | int ret = 0; |
531 | int64_t parent_pos_in_stack; | |
532 | struct ctf_field_path tail_field_path; | |
533 | ||
534 | ctf_field_path_init(&tail_field_path); | |
535 | parent_pos_in_stack = field_class_stack_size(ctx->field_class_stack) - 1; | |
536 | ||
537 | while (parent_pos_in_stack >= 0) { | |
538 | struct ctf_field_class *parent_class = | |
539 | field_class_stack_at(ctx->field_class_stack, parent_pos_in_stack)->fc; | |
540 | int64_t cur_index = | |
541 | field_class_stack_at(ctx->field_class_stack, parent_pos_in_stack)->index; | |
542 | ||
543 | BT_COMP_LOGD("Locating target field class from current parent field class: " | |
544 | "parent-pos=%" PRId64 ", parent-fc-addr=%p, " | |
545 | "cur-index=%" PRId64, | |
546 | parent_pos_in_stack, parent_class, cur_index); | |
547 | ||
548 | /* Locate target from current parent class */ | |
549 | ret = ptokens_to_field_path(ptokens, &tail_field_path, parent_class, cur_index, ctx); | |
550 | if (ret) { | |
551 | /* Not found... yet */ | |
552 | BT_COMP_LOGD_STR("Not found at this point."); | |
553 | ctf_field_path_clear(&tail_field_path); | |
554 | } else { | |
555 | /* Found: stitch tail field path to head field path */ | |
556 | uint64_t i = 0; | |
557 | size_t tail_field_path_len = tail_field_path.path->len; | |
558 | ||
559 | while (BT_TRUE) { | |
560 | struct ctf_field_class *cur_class = | |
561 | field_class_stack_at(ctx->field_class_stack, i)->fc; | |
562 | int64_t index = field_class_stack_at(ctx->field_class_stack, i)->index; | |
563 | ||
564 | if (cur_class == parent_class) { | |
565 | break; | |
566 | } | |
567 | ||
568 | ctf_field_path_append_index(field_path, index); | |
569 | i++; | |
570 | } | |
571 | ||
572 | for (i = 0; i < tail_field_path_len; i++) { | |
573 | int64_t index = ctf_field_path_borrow_index_by_index(&tail_field_path, i); | |
574 | ||
575 | ctf_field_path_append_index(field_path, (int64_t) index); | |
576 | } | |
577 | break; | |
578 | } | |
579 | ||
580 | parent_pos_in_stack--; | |
581 | } | |
582 | ||
583 | if (parent_pos_in_stack < 0) { | |
584 | /* Not found */ | |
585 | ret = -1; | |
586 | } | |
587 | ||
588 | ctf_field_path_fini(&tail_field_path); | |
589 | return ret; | |
44c440bc PP |
590 | } |
591 | ||
592 | /* | |
593 | * Converts a path string to a field path object within the resolving | |
594 | * context `ctx`. | |
595 | */ | |
4164020e SM |
596 | static int pathstr_to_field_path(const char *pathstr, struct ctf_field_path *field_path, |
597 | struct resolve_context *ctx) | |
44c440bc | 598 | { |
4164020e SM |
599 | int ret = 0; |
600 | enum ctf_scope root_scope; | |
601 | GList *ptokens = NULL; | |
602 | ||
603 | /* Convert path string to path tokens */ | |
604 | ptokens = pathstr_to_ptokens(pathstr, ctx); | |
605 | if (!ptokens) { | |
606 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot convert path string to path tokens: " | |
607 | "path=\"%s\"", | |
608 | pathstr); | |
609 | ret = -1; | |
610 | goto end; | |
611 | } | |
612 | ||
613 | /* Absolute or relative path? */ | |
614 | root_scope = get_root_scope_from_absolute_pathstr(pathstr, ctx); | |
615 | ||
616 | if (root_scope == CTF_SCOPE_PACKET_UNKNOWN) { | |
617 | /* Relative path: start with current root scope */ | |
618 | field_path->root = ctx->root_scope; | |
619 | BT_COMP_LOGD("Detected relative path: starting with current root scope: " | |
620 | "scope=%s", | |
621 | ctf_scope_string(field_path->root)); | |
622 | ret = relative_ptokens_to_field_path(ptokens, field_path, ctx); | |
623 | if (ret) { | |
624 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
625 | "Cannot get relative field path of path string: " | |
626 | "path=\"%s\", start-scope=%s, end-scope=%s", | |
627 | pathstr, ctf_scope_string(ctx->root_scope), ctf_scope_string(field_path->root)); | |
628 | goto end; | |
629 | } | |
630 | } else { | |
631 | /* Absolute path: use found root scope */ | |
632 | field_path->root = root_scope; | |
633 | BT_COMP_LOGD("Detected absolute path: using root scope: " | |
634 | "scope=%s", | |
635 | ctf_scope_string(field_path->root)); | |
636 | ret = absolute_ptokens_to_field_path(ptokens, field_path, ctx); | |
637 | if (ret) { | |
638 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
639 | "Cannot get absolute field path of path string: " | |
640 | "path=\"%s\", root-scope=%s", | |
641 | pathstr, ctf_scope_string(root_scope)); | |
642 | goto end; | |
643 | } | |
644 | } | |
645 | ||
646 | if (BT_LOG_ON_TRACE && ret == 0) { | |
647 | GString *field_path_pretty = ctf_field_path_string(field_path); | |
ceda1ae6 | 648 | const char *field_path_pretty_str = field_path_pretty ? field_path_pretty->str : "(null)"; |
4164020e SM |
649 | |
650 | BT_COMP_LOGD("Found field path: path=\"%s\", field-path=\"%s\"", pathstr, | |
651 | field_path_pretty_str); | |
652 | ||
653 | if (field_path_pretty) { | |
654 | g_string_free(field_path_pretty, TRUE); | |
655 | } | |
656 | } | |
44c440bc PP |
657 | |
658 | end: | |
4164020e SM |
659 | ptokens_destroy(ptokens); |
660 | return ret; | |
44c440bc PP |
661 | } |
662 | ||
663 | /* | |
5cd6d0e5 | 664 | * Retrieves a field class by following the field path `field_path` in |
44c440bc PP |
665 | * the resolving context `ctx`. |
666 | */ | |
4164020e SM |
667 | static struct ctf_field_class *field_path_to_field_class(struct ctf_field_path *field_path, |
668 | struct resolve_context *ctx) | |
44c440bc | 669 | { |
4164020e SM |
670 | uint64_t i; |
671 | struct ctf_field_class *fc; | |
672 | ||
673 | /* Start with root class */ | |
674 | fc = borrow_class_from_ctx(ctx, field_path->root); | |
675 | if (!fc) { | |
676 | /* Error: root class is not available */ | |
677 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Root field class is not available: root-scope=%s", | |
678 | ctf_scope_string(field_path->root)); | |
679 | goto end; | |
680 | } | |
681 | ||
682 | /* Locate target */ | |
683 | for (i = 0; i < field_path->path->len; i++) { | |
684 | struct ctf_field_class *child_fc; | |
685 | int64_t child_index = ctf_field_path_borrow_index_by_index(field_path, i); | |
686 | ||
687 | /* Get child field class */ | |
688 | child_fc = ctf_field_class_compound_borrow_field_class_by_index(fc, child_index); | |
689 | BT_ASSERT(child_fc); | |
690 | ||
691 | /* Move child class to current class */ | |
692 | fc = child_fc; | |
693 | } | |
44c440bc PP |
694 | |
695 | end: | |
4164020e | 696 | return fc; |
44c440bc PP |
697 | } |
698 | ||
699 | /* | |
5cd6d0e5 | 700 | * Fills the equivalent field path object of the context class stack. |
44c440bc | 701 | */ |
4164020e | 702 | static void get_ctx_stack_field_path(struct resolve_context *ctx, struct ctf_field_path *field_path) |
44c440bc | 703 | { |
4164020e | 704 | uint64_t i; |
44c440bc | 705 | |
4164020e SM |
706 | BT_ASSERT(field_path); |
707 | field_path->root = ctx->root_scope; | |
708 | ctf_field_path_clear(field_path); | |
44c440bc | 709 | |
4164020e SM |
710 | for (i = 0; i < field_class_stack_size(ctx->field_class_stack); i++) { |
711 | struct field_class_stack_frame *frame = field_class_stack_at(ctx->field_class_stack, i); | |
44c440bc | 712 | |
4164020e SM |
713 | ctf_field_path_append_index(field_path, frame->index); |
714 | } | |
44c440bc PP |
715 | } |
716 | ||
717 | /* | |
718 | * Returns the index of the lowest common ancestor of two field path | |
719 | * objects having the same root scope. | |
720 | */ | |
4164020e SM |
721 | static int64_t get_field_paths_lca_index(struct ctf_field_path *field_path1, |
722 | struct ctf_field_path *field_path2, | |
723 | struct resolve_context *ctx) | |
44c440bc | 724 | { |
4164020e SM |
725 | int64_t lca_index = 0; |
726 | uint64_t field_path1_len, field_path2_len; | |
727 | ||
728 | if (BT_LOG_ON_TRACE) { | |
729 | GString *field_path1_pretty = ctf_field_path_string(field_path1); | |
730 | GString *field_path2_pretty = ctf_field_path_string(field_path2); | |
731 | const char *field_path1_pretty_str = field_path1_pretty ? field_path1_pretty->str : NULL; | |
732 | const char *field_path2_pretty_str = field_path2_pretty ? field_path2_pretty->str : NULL; | |
733 | ||
734 | BT_COMP_LOGD("Finding lowest common ancestor (LCA) between two field paths: " | |
735 | "field-path-1=\"%s\", field-path-2=\"%s\"", | |
736 | field_path1_pretty_str, field_path2_pretty_str); | |
737 | ||
738 | if (field_path1_pretty) { | |
739 | g_string_free(field_path1_pretty, TRUE); | |
740 | } | |
741 | ||
742 | if (field_path2_pretty) { | |
743 | g_string_free(field_path2_pretty, TRUE); | |
744 | } | |
745 | } | |
746 | ||
747 | /* | |
748 | * Start from both roots and find the first mismatch. | |
749 | */ | |
750 | BT_ASSERT(field_path1->root == field_path2->root); | |
751 | field_path1_len = field_path1->path->len; | |
752 | field_path2_len = field_path2->path->len; | |
753 | ||
754 | while (true) { | |
755 | int64_t target_index, ctx_index; | |
756 | ||
757 | if (lca_index == (int64_t) field_path2_len || lca_index == (int64_t) field_path1_len) { | |
758 | /* | |
759 | * This means that both field paths never split. | |
760 | * This is invalid because the target cannot be | |
761 | * an ancestor of the source. | |
762 | */ | |
763 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
764 | "Source field class is an ancestor of target field class or vice versa: " | |
765 | "lca-index=%" PRId64 ", " | |
766 | "field-path-1-len=%" PRIu64 ", " | |
767 | "field-path-2-len=%" PRIu64, | |
768 | lca_index, field_path1_len, field_path2_len); | |
769 | lca_index = -1; | |
770 | break; | |
771 | } | |
772 | ||
773 | target_index = ctf_field_path_borrow_index_by_index(field_path1, lca_index); | |
774 | ctx_index = ctf_field_path_borrow_index_by_index(field_path2, lca_index); | |
775 | ||
776 | if (target_index != ctx_index) { | |
777 | /* LCA index is the previous */ | |
778 | break; | |
779 | } | |
780 | ||
781 | lca_index++; | |
782 | } | |
783 | ||
784 | BT_COMP_LOGD("Found LCA: lca-index=%" PRId64, lca_index); | |
785 | return lca_index; | |
44c440bc PP |
786 | } |
787 | ||
788 | /* | |
789 | * Validates a target field path. | |
790 | */ | |
4164020e SM |
791 | static int validate_target_field_path(struct ctf_field_path *target_field_path, |
792 | struct ctf_field_class *target_fc, | |
793 | struct resolve_context *ctx) | |
44c440bc | 794 | { |
4164020e SM |
795 | int ret = 0; |
796 | struct ctf_field_path ctx_field_path; | |
797 | uint64_t target_field_path_len = target_field_path->path->len; | |
798 | int64_t lca_index; | |
799 | ||
800 | /* Get context field path */ | |
801 | ctf_field_path_init(&ctx_field_path); | |
802 | get_ctx_stack_field_path(ctx, &ctx_field_path); | |
803 | ||
804 | /* | |
805 | * Make sure the target is not a root. | |
806 | */ | |
807 | if (target_field_path_len == 0) { | |
808 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
809 | "Target field path's length is 0 (targeting the root)."); | |
810 | ret = -1; | |
811 | goto end; | |
812 | } | |
813 | ||
814 | /* | |
815 | * Make sure the root of the target field path is not located | |
816 | * after the context field path's root. | |
817 | */ | |
818 | if (target_field_path->root > ctx_field_path.root) { | |
819 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
820 | "Target field class is located after source field class: " | |
821 | "target-root=%s, source-root=%s", | |
822 | ctf_scope_string(target_field_path->root), ctf_scope_string(ctx_field_path.root)); | |
823 | ret = -1; | |
824 | goto end; | |
825 | } | |
826 | ||
827 | if (target_field_path->root == ctx_field_path.root) { | |
828 | int64_t target_index, ctx_index; | |
829 | ||
830 | /* | |
831 | * Find the index of the lowest common ancestor of both field | |
832 | * paths. | |
833 | */ | |
834 | lca_index = get_field_paths_lca_index(target_field_path, &ctx_field_path, ctx); | |
835 | if (lca_index < 0) { | |
836 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot get least common ancestor."); | |
837 | ret = -1; | |
838 | goto end; | |
839 | } | |
840 | ||
841 | /* | |
842 | * Make sure the target field path is located before the | |
843 | * context field path. | |
844 | */ | |
845 | target_index = | |
846 | ctf_field_path_borrow_index_by_index(target_field_path, (uint64_t) lca_index); | |
847 | ctx_index = ctf_field_path_borrow_index_by_index(&ctx_field_path, (uint64_t) lca_index); | |
848 | ||
849 | if (target_index >= ctx_index) { | |
850 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
851 | "Target field class's index is greater than or equal to source field class's index in LCA: " | |
852 | "lca-index=%" PRId64 ", " | |
853 | "target-index=%" PRId64 ", " | |
854 | "source-index=%" PRId64, | |
855 | lca_index, target_index, ctx_index); | |
856 | ret = -1; | |
857 | goto end; | |
858 | } | |
859 | } | |
860 | ||
861 | /* | |
862 | * Make sure the target class has the right class and properties. | |
863 | */ | |
864 | switch (ctx->cur_fc->type) { | |
865 | case CTF_FIELD_CLASS_TYPE_VARIANT: | |
866 | if (target_fc->type != CTF_FIELD_CLASS_TYPE_ENUM) { | |
867 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
868 | "Variant field class's tag field class is not an enumeration field class: " | |
869 | "tag-fc-addr=%p, tag-fc-id=%d", | |
870 | target_fc, target_fc->type); | |
871 | ret = -1; | |
872 | goto end; | |
873 | } | |
874 | break; | |
875 | case CTF_FIELD_CLASS_TYPE_SEQUENCE: | |
876 | { | |
4164020e SM |
877 | if (target_fc->type != CTF_FIELD_CLASS_TYPE_INT && |
878 | target_fc->type != CTF_FIELD_CLASS_TYPE_ENUM) { | |
879 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
880 | "Sequence field class's length field class is not an unsigned integer field class: " | |
881 | "length-fc-addr=%p, length-fc-id=%d", | |
882 | target_fc, target_fc->type); | |
883 | ret = -1; | |
884 | goto end; | |
885 | } | |
886 | ||
ab003dc0 SM |
887 | ctf_field_class_int *int_fc = ctf_field_class_as_int(target_fc); |
888 | ||
4164020e SM |
889 | if (int_fc->is_signed) { |
890 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
891 | "Sequence field class's length field class is not an unsigned integer field class: " | |
892 | "length-fc-addr=%p, length-fc-id=%d", | |
893 | target_fc, target_fc->type); | |
894 | ret = -1; | |
895 | goto end; | |
896 | } | |
897 | break; | |
898 | } | |
899 | default: | |
900 | bt_common_abort(); | |
901 | } | |
44c440bc PP |
902 | |
903 | end: | |
4164020e SM |
904 | ctf_field_path_fini(&ctx_field_path); |
905 | return ret; | |
44c440bc PP |
906 | } |
907 | ||
908 | /* | |
5cd6d0e5 | 909 | * Resolves a variant or sequence field class `fc`. |
44c440bc | 910 | */ |
4164020e SM |
911 | static int resolve_sequence_or_variant_field_class(struct ctf_field_class *fc, |
912 | struct resolve_context *ctx) | |
44c440bc | 913 | { |
4164020e SM |
914 | int ret = 0; |
915 | const char *pathstr; | |
916 | struct ctf_field_path target_field_path; | |
917 | struct ctf_field_class *target_fc = NULL; | |
918 | GString *target_field_path_pretty = NULL; | |
919 | const char *target_field_path_pretty_str; | |
920 | ||
921 | ctf_field_path_init(&target_field_path); | |
922 | ||
923 | /* Get path string */ | |
924 | switch (fc->type) { | |
925 | case CTF_FIELD_CLASS_TYPE_SEQUENCE: | |
926 | { | |
927 | struct ctf_field_class_sequence *seq_fc = ctf_field_class_as_sequence(fc); | |
928 | pathstr = seq_fc->length_ref->str; | |
929 | break; | |
930 | } | |
931 | case CTF_FIELD_CLASS_TYPE_VARIANT: | |
932 | { | |
933 | struct ctf_field_class_variant *var_fc = ctf_field_class_as_variant(fc); | |
934 | pathstr = var_fc->tag_ref->str; | |
935 | break; | |
936 | } | |
937 | default: | |
938 | bt_common_abort(); | |
939 | } | |
940 | ||
941 | if (!pathstr) { | |
942 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot get path string."); | |
943 | ret = -1; | |
944 | goto end; | |
945 | } | |
946 | ||
947 | /* Get target field path out of path string */ | |
948 | ret = pathstr_to_field_path(pathstr, &target_field_path, ctx); | |
949 | if (ret) { | |
950 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot get target field path for path string: " | |
951 | "path=\"%s\"", | |
952 | pathstr); | |
953 | goto end; | |
954 | } | |
955 | ||
956 | target_field_path_pretty = ctf_field_path_string(&target_field_path); | |
957 | target_field_path_pretty_str = target_field_path_pretty ? target_field_path_pretty->str : NULL; | |
958 | ||
959 | /* Get target field class */ | |
960 | target_fc = field_path_to_field_class(&target_field_path, ctx); | |
961 | if (!target_fc) { | |
962 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot get target field class for path string: " | |
963 | "path=\"%s\", target-field-path=\"%s\"", | |
964 | pathstr, target_field_path_pretty_str); | |
965 | ret = -1; | |
966 | goto end; | |
967 | } | |
968 | ||
969 | ret = validate_target_field_path(&target_field_path, target_fc, ctx); | |
970 | if (ret) { | |
971 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Invalid target field path for path string: " | |
972 | "path=\"%s\", target-field-path=\"%s\"", | |
973 | pathstr, target_field_path_pretty_str); | |
974 | goto end; | |
975 | } | |
976 | ||
977 | /* Set target field path and target field class */ | |
978 | switch (fc->type) { | |
979 | case CTF_FIELD_CLASS_TYPE_SEQUENCE: | |
980 | { | |
981 | ctf_field_class_sequence *seq_fc = ctf_field_class_as_sequence(fc); | |
982 | ||
983 | ctf_field_path_copy_content(&seq_fc->length_path, &target_field_path); | |
984 | seq_fc->length_fc = ctf_field_class_as_int(target_fc); | |
985 | break; | |
986 | } | |
987 | case CTF_FIELD_CLASS_TYPE_VARIANT: | |
988 | { | |
989 | ctf_field_class_variant *var_fc = ctf_field_class_as_variant(fc); | |
990 | ||
991 | ctf_field_path_copy_content(&var_fc->tag_path, &target_field_path); | |
992 | ctf_field_class_variant_set_tag_field_class(var_fc, ctf_field_class_as_enum(target_fc)); | |
993 | break; | |
994 | } | |
995 | default: | |
996 | bt_common_abort(); | |
997 | } | |
44c440bc PP |
998 | |
999 | end: | |
4164020e SM |
1000 | if (target_field_path_pretty) { |
1001 | g_string_free(target_field_path_pretty, TRUE); | |
1002 | } | |
44c440bc | 1003 | |
4164020e SM |
1004 | ctf_field_path_fini(&target_field_path); |
1005 | return ret; | |
44c440bc PP |
1006 | } |
1007 | ||
1008 | /* | |
5cd6d0e5 | 1009 | * Resolves a field class `fc`. |
44c440bc | 1010 | */ |
4164020e | 1011 | static int resolve_field_class(struct ctf_field_class *fc, struct resolve_context *ctx) |
44c440bc | 1012 | { |
4164020e SM |
1013 | int ret = 0; |
1014 | ||
1015 | if (!fc) { | |
1016 | /* Field class is not available; still valid */ | |
1017 | goto end; | |
1018 | } | |
1019 | ||
1020 | ctx->cur_fc = fc; | |
1021 | ||
1022 | /* Resolve sequence/variant field class */ | |
1023 | switch (fc->type) { | |
1024 | case CTF_FIELD_CLASS_TYPE_SEQUENCE: | |
1025 | case CTF_FIELD_CLASS_TYPE_VARIANT: | |
1026 | ret = resolve_sequence_or_variant_field_class(fc, ctx); | |
1027 | if (ret) { | |
1028 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
1029 | "Cannot resolve sequence field class's length or variant field class's tag: " | |
1030 | "ret=%d, fc-addr=%p", | |
1031 | ret, fc); | |
1032 | goto end; | |
1033 | } | |
1034 | ||
1035 | break; | |
1036 | default: | |
1037 | break; | |
1038 | } | |
1039 | ||
1040 | /* Recurse into compound classes */ | |
1041 | switch (fc->type) { | |
1042 | case CTF_FIELD_CLASS_TYPE_STRUCT: | |
1043 | case CTF_FIELD_CLASS_TYPE_VARIANT: | |
1044 | case CTF_FIELD_CLASS_TYPE_SEQUENCE: | |
1045 | case CTF_FIELD_CLASS_TYPE_ARRAY: | |
1046 | { | |
1047 | uint64_t i; | |
1048 | uint64_t field_count = ctf_field_class_compound_get_field_class_count(fc); | |
1049 | ||
1050 | ret = field_class_stack_push(ctx->field_class_stack, fc, ctx); | |
1051 | if (ret) { | |
1052 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot push field class on context's stack: " | |
1053 | "fc-addr=%p", | |
1054 | fc); | |
1055 | goto end; | |
1056 | } | |
1057 | ||
1058 | for (i = 0; i < field_count; i++) { | |
1059 | struct ctf_field_class *child_fc = | |
1060 | ctf_field_class_compound_borrow_field_class_by_index(fc, i); | |
1061 | ||
1062 | BT_ASSERT(child_fc); | |
1063 | ||
1064 | if (fc->type == CTF_FIELD_CLASS_TYPE_ARRAY || | |
1065 | fc->type == CTF_FIELD_CLASS_TYPE_SEQUENCE) { | |
1066 | field_class_stack_peek(ctx->field_class_stack)->index = -1; | |
1067 | } else { | |
1068 | field_class_stack_peek(ctx->field_class_stack)->index = (int64_t) i; | |
1069 | } | |
1070 | ||
1071 | BT_COMP_LOGD("Resolving field class's child field class: " | |
1072 | "parent-fc-addr=%p, child-fc-addr=%p, " | |
1073 | "index=%" PRIu64 ", count=%" PRIu64, | |
1074 | fc, child_fc, i, field_count); | |
1075 | ret = resolve_field_class(child_fc, ctx); | |
1076 | if (ret) { | |
1077 | goto end; | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | field_class_stack_pop(ctx->field_class_stack, ctx); | |
1082 | break; | |
1083 | } | |
1084 | default: | |
1085 | break; | |
1086 | } | |
44c440bc PP |
1087 | |
1088 | end: | |
4164020e | 1089 | return ret; |
44c440bc PP |
1090 | } |
1091 | ||
1092 | /* | |
5cd6d0e5 | 1093 | * Resolves the root field class corresponding to the scope `root_scope`. |
44c440bc | 1094 | */ |
4164020e | 1095 | static int resolve_root_class(enum ctf_scope root_scope, struct resolve_context *ctx) |
44c440bc | 1096 | { |
4164020e | 1097 | int ret; |
44c440bc | 1098 | |
4164020e SM |
1099 | BT_ASSERT(field_class_stack_size(ctx->field_class_stack) == 0); |
1100 | ctx->root_scope = root_scope; | |
1101 | ret = resolve_field_class(borrow_class_from_ctx(ctx, root_scope), ctx); | |
1102 | ctx->root_scope = CTF_SCOPE_PACKET_UNKNOWN; | |
1103 | return ret; | |
44c440bc PP |
1104 | } |
1105 | ||
4164020e SM |
1106 | static int resolve_event_class_field_classes(struct resolve_context *ctx, |
1107 | struct ctf_event_class *ec) | |
44c440bc | 1108 | { |
4164020e SM |
1109 | int ret = 0; |
1110 | ||
1111 | BT_ASSERT(!ctx->scopes.event_spec_context); | |
1112 | BT_ASSERT(!ctx->scopes.event_payload); | |
1113 | ||
1114 | if (ec->is_translated) { | |
1115 | goto end; | |
1116 | } | |
1117 | ||
1118 | ctx->ec = ec; | |
1119 | ctx->scopes.event_spec_context = ec->spec_context_fc; | |
1120 | ret = resolve_root_class(CTF_SCOPE_EVENT_COMMON_CONTEXT, ctx); | |
1121 | if (ret) { | |
1122 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
1123 | "Cannot resolve event specific context field class: " | |
1124 | "ret=%d", | |
1125 | ret); | |
1126 | goto end; | |
1127 | } | |
1128 | ||
1129 | ctx->scopes.event_payload = ec->payload_fc; | |
1130 | ret = resolve_root_class(CTF_SCOPE_EVENT_PAYLOAD, ctx); | |
1131 | if (ret) { | |
1132 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot resolve event payload field class: " | |
1133 | "ret=%d", | |
1134 | ret); | |
1135 | goto end; | |
1136 | } | |
44c440bc PP |
1137 | |
1138 | end: | |
4164020e SM |
1139 | ctx->scopes.event_spec_context = NULL; |
1140 | ctx->scopes.event_payload = NULL; | |
1141 | ctx->ec = NULL; | |
1142 | return ret; | |
44c440bc PP |
1143 | } |
1144 | ||
4164020e SM |
1145 | static int resolve_stream_class_field_classes(struct resolve_context *ctx, |
1146 | struct ctf_stream_class *sc) | |
44c440bc | 1147 | { |
4164020e SM |
1148 | int ret = 0; |
1149 | uint64_t i; | |
1150 | ||
1151 | BT_ASSERT(!ctx->scopes.packet_context); | |
1152 | BT_ASSERT(!ctx->scopes.event_header); | |
1153 | BT_ASSERT(!ctx->scopes.event_common_context); | |
1154 | ctx->sc = sc; | |
1155 | ||
1156 | if (!sc->is_translated) { | |
1157 | ctx->scopes.packet_context = sc->packet_context_fc; | |
1158 | ret = resolve_root_class(CTF_SCOPE_PACKET_CONTEXT, ctx); | |
1159 | if (ret) { | |
1160 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot resolve packet context field class: " | |
1161 | "ret=%d", | |
1162 | ret); | |
1163 | goto end; | |
1164 | } | |
1165 | ||
1166 | ctx->scopes.event_header = sc->event_header_fc; | |
1167 | ret = resolve_root_class(CTF_SCOPE_EVENT_HEADER, ctx); | |
1168 | if (ret) { | |
1169 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot resolve event header field class: " | |
1170 | "ret=%d", | |
1171 | ret); | |
1172 | goto end; | |
1173 | } | |
1174 | ||
1175 | ctx->scopes.event_common_context = sc->event_common_context_fc; | |
1176 | ret = resolve_root_class(CTF_SCOPE_EVENT_COMMON_CONTEXT, ctx); | |
1177 | if (ret) { | |
1178 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( | |
1179 | "Cannot resolve event common context field class: " | |
1180 | "ret=%d", | |
1181 | ret); | |
1182 | goto end; | |
1183 | } | |
1184 | } | |
1185 | ||
1186 | ctx->scopes.packet_context = sc->packet_context_fc; | |
1187 | ctx->scopes.event_header = sc->event_header_fc; | |
1188 | ctx->scopes.event_common_context = sc->event_common_context_fc; | |
1189 | ||
1190 | for (i = 0; i < sc->event_classes->len; i++) { | |
1191 | ctf_event_class *ec = (ctf_event_class *) sc->event_classes->pdata[i]; | |
1192 | ||
1193 | ret = resolve_event_class_field_classes(ctx, ec); | |
1194 | if (ret) { | |
1195 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot resolve event class's field classes: " | |
1196 | "ec-id=%" PRIu64 ", ec-name=\"%s\"", | |
1197 | ec->id, ec->name->str); | |
1198 | goto end; | |
1199 | } | |
1200 | } | |
44c440bc PP |
1201 | |
1202 | end: | |
4164020e SM |
1203 | ctx->scopes.packet_context = NULL; |
1204 | ctx->scopes.event_header = NULL; | |
1205 | ctx->scopes.event_common_context = NULL; | |
1206 | ctx->sc = NULL; | |
1207 | return ret; | |
44c440bc PP |
1208 | } |
1209 | ||
1210 | BT_HIDDEN | |
0746848c | 1211 | int ctf_trace_class_resolve_field_classes(struct ctf_trace_class *tc, |
4164020e | 1212 | struct meta_log_config *log_cfg) |
44c440bc | 1213 | { |
4164020e SM |
1214 | int ret = 0; |
1215 | uint64_t i; | |
1216 | ||
1217 | resolve_context local_ctx {}; | |
1218 | local_ctx.log_level = log_cfg->log_level; | |
1219 | local_ctx.self_comp = log_cfg->self_comp; | |
1220 | local_ctx.self_comp_class = log_cfg->self_comp_class; | |
1221 | local_ctx.tc = tc; | |
1222 | local_ctx.scopes.packet_header = tc->packet_header_fc; | |
1223 | local_ctx.root_scope = CTF_SCOPE_PACKET_HEADER; | |
1224 | ||
1225 | struct resolve_context *ctx = &local_ctx; | |
1226 | ||
1227 | /* Initialize class stack */ | |
1228 | ctx->field_class_stack = field_class_stack_create(); | |
1229 | if (!ctx->field_class_stack) { | |
1230 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot create field class stack."); | |
1231 | ret = -1; | |
1232 | goto end; | |
1233 | } | |
1234 | ||
1235 | if (!tc->is_translated) { | |
1236 | ctx->scopes.packet_header = tc->packet_header_fc; | |
1237 | ret = resolve_root_class(CTF_SCOPE_PACKET_HEADER, ctx); | |
1238 | if (ret) { | |
1239 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot resolve packet header field class: " | |
1240 | "ret=%d", | |
1241 | ret); | |
1242 | goto end; | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | ctx->scopes.packet_header = tc->packet_header_fc; | |
1247 | ||
1248 | for (i = 0; i < tc->stream_classes->len; i++) { | |
1249 | ctf_stream_class *sc = (ctf_stream_class *) tc->stream_classes->pdata[i]; | |
1250 | ||
1251 | ret = resolve_stream_class_field_classes(ctx, sc); | |
1252 | if (ret) { | |
1253 | _BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE("Cannot resolve stream class's field classes: " | |
1254 | "sc-id=%" PRIu64, | |
1255 | sc->id); | |
1256 | goto end; | |
1257 | } | |
1258 | } | |
44c440bc PP |
1259 | |
1260 | end: | |
4164020e SM |
1261 | field_class_stack_destroy(ctx->field_class_stack); |
1262 | return ret; | |
44c440bc | 1263 | } |