plugins/ctf/common/metadata/ctf-meta-translate.c

   1 /*
   2  * Copyright 2018 - Philippe Proulx <pproulx@efficios.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  */
  14
  15 #define BT_LOG_TAG "PLUGIN-CTF-METADATA-META-TRANSLATE"
  16 #include "logging.h"
  17
  18 #include <babeltrace/babeltrace.h>
  19 #include <babeltrace/babeltrace-internal.h>
  20 #include <babeltrace/assert-internal.h>
  21 #include <glib.h>
  22 #include <stdint.h>
  23 #include <string.h>
  24 #include <inttypes.h>
  25
  26 #include "ctf-meta-visitors.h"
  27
  28 static inline
  29 struct bt_field_class *ctf_field_class_to_ir(struct ctf_field_class *fc,
  30                 struct ctf_trace_class *tc,
  31                 struct ctf_stream_class *sc,
  32                 struct ctf_event_class *ec);
  33
  34 static inline
  35 void ctf_field_class_int_set_props(struct ctf_field_class_int *fc,
  36                 struct bt_field_class *ir_fc)
  37 {
  38         int ret;
  39
  40         ret = bt_field_class_integer_set_field_value_range(ir_fc, fc->base.size);
  41         BT_ASSERT(ret == 0);
  42         ret = bt_field_class_integer_set_preferred_display_base(ir_fc,
  43                 fc->disp_base);
  44         BT_ASSERT(ret == 0);
  45 }
  46
  47 static inline
  48 struct bt_field_class *ctf_field_class_int_to_ir(struct ctf_field_class_int *fc)
  49 {
  50         struct bt_field_class *ir_fc;
  51
  52         if (fc->is_signed) {
  53                 ir_fc = bt_field_class_signed_integer_create();
  54         } else {
  55                 ir_fc = bt_field_class_unsigned_integer_create();
  56         }
  57
  58         BT_ASSERT(ir_fc);
  59         ctf_field_class_int_set_props(fc, ir_fc);
  60         return ir_fc;
  61 }
  62
  63 static inline
  64 struct bt_field_class *ctf_field_class_enum_to_ir(struct ctf_field_class_enum *fc)
  65 {
  66         int ret;
  67         struct bt_field_class *ir_fc;
  68         uint64_t i;
  69
  70         if (fc->base.is_signed) {
  71                 ir_fc = bt_field_class_signed_enumeration_create();
  72         } else {
  73                 ir_fc = bt_field_class_unsigned_enumeration_create();
  74         }
  75
  76         BT_ASSERT(ir_fc);
  77         ctf_field_class_int_set_props((void *) fc, ir_fc);
  78
  79         for (i = 0; i < fc->mappings->len; i++) {
  80                 struct ctf_field_class_enum_mapping *mapping =
  81                         ctf_field_class_enum_borrow_mapping_by_index(fc, i);
  82
  83                 if (fc->base.is_signed) {
  84                         ret = bt_field_class_signed_enumeration_map_range(
  85                                 ir_fc, mapping->label->str,
  86                                 mapping->range.lower.i, mapping->range.upper.i);
  87                 } else {
  88                         ret = bt_field_class_unsigned_enumeration_map_range(
  89                                 ir_fc, mapping->label->str,
  90                                 mapping->range.lower.u, mapping->range.upper.u);
  91                 }
  92
  93                 BT_ASSERT(ret == 0);
  94         }
  95
  96         return ir_fc;
  97 }
  98
  99 static inline
 100 struct bt_field_class *ctf_field_class_float_to_ir(
 101                 struct ctf_field_class_float *fc)
 102 {
 103         struct bt_field_class *ir_fc;
 104         int ret;
 105
 106         ir_fc = bt_field_class_real_create();
 107         BT_ASSERT(ir_fc);
 108
 109         if (fc->base.size == 32) {
 110                 ret = bt_field_class_real_set_is_single_precision(ir_fc,
 111                         BT_TRUE);
 112                 BT_ASSERT(ret == 0);
 113         }
 114
 115         return ir_fc;
 116 }
 117
 118 static inline
 119 struct bt_field_class *ctf_field_class_string_to_ir(
 120                 struct ctf_field_class_string *fc)
 121 {
 122         struct bt_field_class *ir_fc = bt_field_class_string_create();
 123
 124         BT_ASSERT(ir_fc);
 125         return ir_fc;
 126 }
 127
 128 static inline
 129 struct bt_field_class *ctf_field_class_struct_to_ir(
 130                 struct ctf_field_class_struct *fc,
 131                 struct ctf_trace_class *tc,
 132                 struct ctf_stream_class *sc,
 133                 struct ctf_event_class *ec)
 134 {
 135         int ret;
 136         struct bt_field_class *ir_fc = bt_field_class_structure_create();
 137         uint64_t i;
 138
 139         BT_ASSERT(ir_fc);
 140
 141         for (i = 0; i < fc->members->len; i++) {
 142                 struct ctf_named_field_class *named_fc =
 143                         ctf_field_class_struct_borrow_member_by_index(fc, i);
 144                 struct bt_field_class *member_ir_fc;
 145
 146                 if (!named_fc->fc->in_ir) {
 147                         continue;
 148                 }
 149
 150                 member_ir_fc = ctf_field_class_to_ir(named_fc->fc, tc, sc, ec);
 151                 BT_ASSERT(member_ir_fc);
 152                 ret = bt_field_class_structure_append_member(ir_fc,
 153                         named_fc->name->str, member_ir_fc);
 154                 BT_ASSERT(ret == 0);
 155                 bt_put(member_ir_fc);
 156         }
 157
 158         return ir_fc;
 159 }
 160
 161 static inline
 162 struct bt_field_class *borrow_ir_ft_from_field_path(
 163                 struct ctf_field_path *field_path,
 164                 struct ctf_trace_class *tc,
 165                 struct ctf_stream_class *sc,
 166                 struct ctf_event_class *ec)
 167 {
 168         struct bt_field_class *ir_fc = NULL;
 169         struct ctf_field_class *fc = ctf_field_path_borrow_field_class(
 170                 field_path, tc, sc, ec);
 171
 172         BT_ASSERT(fc);
 173
 174         if (fc->in_ir) {
 175                 ir_fc = fc->ir_fc;
 176         }
 177
 178         return ir_fc;
 179 }
 180
 181 static inline
 182 struct bt_field_class *ctf_field_class_variant_to_ir(
 183                 struct ctf_field_class_variant *fc,
 184                 struct ctf_trace_class *tc,
 185                 struct ctf_stream_class *sc,
 186                 struct ctf_event_class *ec)
 187 {
 188         int ret;
 189         struct bt_field_class *ir_fc = bt_field_class_variant_create();
 190         uint64_t i;
 191
 192         BT_ASSERT(ir_fc);
 193         ret = bt_field_class_variant_set_selector_field_class(ir_fc,
 194                 borrow_ir_ft_from_field_path(&fc->tag_path, tc, sc, ec));
 195         BT_ASSERT(ret == 0);
 196
 197         for (i = 0; i < fc->options->len; i++) {
 198                 struct ctf_named_field_class *named_fc =
 199                         ctf_field_class_variant_borrow_option_by_index(fc, i);
 200                 struct bt_field_class *option_ir_fc;
 201
 202                 BT_ASSERT(named_fc->fc->in_ir);
 203                 option_ir_fc = ctf_field_class_to_ir(named_fc->fc, tc, sc, ec);
 204                 BT_ASSERT(option_ir_fc);
 205                 ret = bt_field_class_variant_append_option(ir_fc,
 206                         named_fc->name->str, option_ir_fc);
 207                 BT_ASSERT(ret == 0);
 208                 bt_put(option_ir_fc);
 209         }
 210
 211         return ir_fc;
 212 }
 213
 214 static inline
 215 struct bt_field_class *ctf_field_class_array_to_ir(
 216                 struct ctf_field_class_array *fc,
 217                 struct ctf_trace_class *tc,
 218                 struct ctf_stream_class *sc,
 219                 struct ctf_event_class *ec)
 220 {
 221         struct bt_field_class *ir_fc;
 222         struct bt_field_class *elem_ir_fc;
 223
 224         if (fc->base.is_text) {
 225                 ir_fc = bt_field_class_string_create();
 226                 BT_ASSERT(ir_fc);
 227                 goto end;
 228         }
 229
 230         elem_ir_fc = ctf_field_class_to_ir(fc->base.elem_fc, tc, sc, ec);
 231         BT_ASSERT(elem_ir_fc);
 232         ir_fc = bt_field_class_static_array_create(elem_ir_fc, fc->length);
 233         BT_ASSERT(ir_fc);
 234         bt_put(elem_ir_fc);
 235
 236 end:
 237         return ir_fc;
 238 }
 239
 240 static inline
 241 struct bt_field_class *ctf_field_class_sequence_to_ir(
 242                 struct ctf_field_class_sequence *fc,
 243                 struct ctf_trace_class *tc,
 244                 struct ctf_stream_class *sc,
 245                 struct ctf_event_class *ec)
 246 {
 247         int ret;
 248         struct bt_field_class *ir_fc;
 249         struct bt_field_class *elem_ir_fc;
 250
 251         if (fc->base.is_text) {
 252                 ir_fc = bt_field_class_string_create();
 253                 BT_ASSERT(ir_fc);
 254                 goto end;
 255         }
 256
 257         elem_ir_fc = ctf_field_class_to_ir(fc->base.elem_fc, tc, sc, ec);
 258         BT_ASSERT(elem_ir_fc);
 259         ir_fc = bt_field_class_dynamic_array_create(elem_ir_fc);
 260         BT_ASSERT(ir_fc);
 261         bt_put(elem_ir_fc);
 262         BT_ASSERT(ir_fc);
 263         ret = bt_field_class_dynamic_array_set_length_field_class(ir_fc,
 264                 borrow_ir_ft_from_field_path(&fc->length_path, tc, sc, ec));
 265         BT_ASSERT(ret == 0);
 266
 267 end:
 268         return ir_fc;
 269 }
 270
 271 static inline
 272 struct bt_field_class *ctf_field_class_to_ir(struct ctf_field_class *fc,
 273                 struct ctf_trace_class *tc,
 274                 struct ctf_stream_class *sc,
 275                 struct ctf_event_class *ec)
 276 {
 277         struct bt_field_class *ir_fc = NULL;
 278
 279         BT_ASSERT(fc);
 280         BT_ASSERT(fc->in_ir);
 281
 282         switch (fc->id) {
 283         case CTF_FIELD_CLASS_ID_INT:
 284                 ir_fc = ctf_field_class_int_to_ir((void *) fc);
 285                 break;
 286         case CTF_FIELD_CLASS_ID_ENUM:
 287                 ir_fc = ctf_field_class_enum_to_ir((void *) fc);
 288                 break;
 289         case CTF_FIELD_CLASS_ID_FLOAT:
 290                 ir_fc = ctf_field_class_float_to_ir((void *) fc);
 291                 break;
 292         case CTF_FIELD_CLASS_ID_STRING:
 293                 ir_fc = ctf_field_class_string_to_ir((void *) fc);
 294                 break;
 295         case CTF_FIELD_CLASS_ID_STRUCT:
 296                 ir_fc = ctf_field_class_struct_to_ir((void *) fc, tc, sc, ec);
 297                 break;
 298         case CTF_FIELD_CLASS_ID_ARRAY:
 299                 ir_fc = ctf_field_class_array_to_ir((void *) fc, tc, sc, ec);
 300                 break;
 301         case CTF_FIELD_CLASS_ID_SEQUENCE:
 302                 ir_fc = ctf_field_class_sequence_to_ir((void *) fc, tc, sc, ec);
 303                 break;
 304         case CTF_FIELD_CLASS_ID_VARIANT:
 305                 ir_fc = ctf_field_class_variant_to_ir((void *) fc, tc, sc, ec);
 306                 break;
 307         default:
 308                 abort();
 309         }
 310
 311         fc->ir_fc = ir_fc;
 312         return ir_fc;
 313 }
 314
 315 static inline
 316 bool ctf_field_class_struct_has_immediate_member_in_ir(
 317                 struct ctf_field_class_struct *fc)
 318 {
 319         uint64_t i;
 320         bool has_immediate_member_in_ir = false;
 321
 322         for (i = 0; i < fc->members->len; i++) {
 323                 struct ctf_named_field_class *named_fc =
 324                         ctf_field_class_struct_borrow_member_by_index(fc, i);
 325
 326                 if (named_fc->fc->in_ir) {
 327                         has_immediate_member_in_ir = true;
 328                         goto end;
 329                 }
 330         }
 331
 332 end:
 333         return has_immediate_member_in_ir;
 334 }
 335
 336 static inline
 337 struct bt_field_class *scope_ctf_field_class_to_ir(struct ctf_field_class *fc,
 338         struct ctf_trace_class *tc,
 339         struct ctf_stream_class *sc,
 340         struct ctf_event_class *ec)
 341 {
 342         struct bt_field_class *ir_fc = NULL;
 343
 344         if (!fc) {
 345                 goto end;
 346         }
 347
 348         BT_ASSERT(fc->id == CTF_FIELD_CLASS_ID_STRUCT);
 349
 350         if (!ctf_field_class_struct_has_immediate_member_in_ir((void *) fc)) {
 351                 /*
 352                  * Nothing for IR in this scope: typical for packet
 353                  * header, packet context, and event header.
 354                  */
 355                 goto end;
 356         }
 357
 358         ir_fc = ctf_field_class_to_ir(fc, tc, sc, ec);
 359
 360 end:
 361         return ir_fc;
 362 }
 363
 364 static inline
 365 struct ctf_field_class_int *borrow_named_int_field_class(
 366                 struct ctf_field_class_struct *struct_fc, const char *name)
 367 {
 368         struct ctf_named_field_class *named_fc = NULL;
 369         struct ctf_field_class_int *int_fc = NULL;
 370
 371         if (!struct_fc) {
 372                 goto end;
 373         }
 374
 375         named_fc = ctf_field_class_struct_borrow_member_by_name(struct_fc, name);
 376         if (!named_fc) {
 377                 goto end;
 378         }
 379
 380         if (named_fc->fc->id != CTF_FIELD_CLASS_ID_INT &&
 381                         named_fc->fc->id != CTF_FIELD_CLASS_ID_ENUM) {
 382                 goto end;
 383         }
 384
 385         int_fc = (void *) named_fc->fc;
 386
 387 end:
 388         return int_fc;
 389 }
 390
 391 static inline
 392 struct bt_event_class *ctf_event_class_to_ir(struct ctf_event_class *ec,
 393                 struct bt_stream_class *ir_sc, struct ctf_trace_class *tc,
 394                 struct ctf_stream_class *sc)
 395 {
 396         int ret;
 397         struct bt_event_class *ir_ec = NULL;
 398
 399         if (ec->is_translated) {
 400                 ir_ec = bt_stream_class_borrow_event_class_by_id(
 401                         ir_sc, ec->id);
 402                 BT_ASSERT(ir_ec);
 403                 goto end;
 404         }
 405
 406         ir_ec = bt_event_class_create_with_id(ir_sc, ec->id);
 407         BT_ASSERT(ir_ec);
 408         bt_put(ir_ec);
 409
 410         if (ec->spec_context_fc) {
 411                 struct bt_field_class *ir_fc = scope_ctf_field_class_to_ir(
 412                         ec->spec_context_fc, tc, sc, ec);
 413
 414                 if (ir_fc) {
 415                         ret = bt_event_class_set_specific_context_field_class(
 416                                 ir_ec, ir_fc);
 417                         BT_ASSERT(ret == 0);
 418                         bt_put(ir_fc);
 419                 }
 420         }
 421
 422         if (ec->payload_fc) {
 423                 struct bt_field_class *ir_fc = scope_ctf_field_class_to_ir(
 424                         ec->payload_fc, tc, sc, ec);
 425
 426                 if (ir_fc) {
 427                         ret = bt_event_class_set_payload_field_class(ir_ec,
 428                                 ir_fc);
 429                         BT_ASSERT(ret == 0);
 430                         bt_put(ir_fc);
 431                 }
 432         }
 433
 434         if (ec->name->len > 0) {
 435                 ret = bt_event_class_set_name(ir_ec, ec->name->str);
 436                 BT_ASSERT(ret == 0);
 437         }
 438
 439         if (ec->emf_uri->len > 0) {
 440                 ret = bt_event_class_set_emf_uri(ir_ec, ec->emf_uri->str);
 441                 BT_ASSERT(ret == 0);
 442         }
 443
 444         if (ec->log_level != -1) {
 445                 ret = bt_event_class_set_log_level(ir_ec, ec->log_level);
 446                 BT_ASSERT(ret == 0);
 447         }
 448
 449         ec->is_translated = true;
 450         ec->ir_ec = ir_ec;
 451
 452 end:
 453         return ir_ec;
 454 }
 455
 456
 457 static inline
 458 struct bt_stream_class *ctf_stream_class_to_ir(struct ctf_stream_class *sc,
 459                 struct bt_trace *ir_trace, struct ctf_trace_class *tc)
 460 {
 461         int ret;
 462         struct bt_stream_class *ir_sc = NULL;
 463         struct ctf_field_class_int *int_fc;
 464
 465         if (sc->is_translated) {
 466                 ir_sc = bt_trace_borrow_stream_class_by_id(ir_trace, sc->id);
 467                 BT_ASSERT(ir_sc);
 468                 goto end;
 469         }
 470
 471         ir_sc = bt_stream_class_create_with_id(ir_trace, sc->id);
 472         BT_ASSERT(ir_sc);
 473         bt_put(ir_sc);
 474
 475         if (sc->packet_context_fc) {
 476                 struct bt_field_class *ir_fc = scope_ctf_field_class_to_ir(
 477                         sc->packet_context_fc, tc, sc, NULL);
 478
 479                 if (ir_fc) {
 480                         ret = bt_stream_class_set_packet_context_field_class(
 481                                 ir_sc, ir_fc);
 482                         BT_ASSERT(ret == 0);
 483                         bt_put(ir_fc);
 484                 }
 485         }
 486
 487         if (sc->event_header_fc) {
 488                 struct bt_field_class *ir_fc = scope_ctf_field_class_to_ir(
 489                         sc->event_header_fc, tc, sc, NULL);
 490
 491                 if (ir_fc) {
 492                         ret = bt_stream_class_set_event_header_field_class(ir_sc,
 493                                 ir_fc);
 494                         BT_ASSERT(ret == 0);
 495                         bt_put(ir_fc);
 496                 }
 497         }
 498
 499         if (sc->event_common_context_fc) {
 500                 struct bt_field_class *ir_fc = scope_ctf_field_class_to_ir(
 501                         sc->event_common_context_fc, tc, sc, NULL);
 502
 503                 if (ir_fc) {
 504                         ret = bt_stream_class_set_event_common_context_field_class(
 505                                 ir_sc, ir_fc);
 506                         BT_ASSERT(ret == 0);
 507                         bt_put(ir_fc);
 508                 }
 509         }
 510
 511         ret = bt_stream_class_set_assigns_automatic_event_class_id(ir_sc,
 512                 BT_FALSE);
 513         BT_ASSERT(ret == 0);
 514         ret = bt_stream_class_set_assigns_automatic_stream_id(ir_sc, BT_FALSE);
 515         BT_ASSERT(ret == 0);
 516
 517         if (sc->default_clock_class) {
 518                 ret = bt_stream_class_set_default_clock_class(ir_sc,
 519                         sc->default_clock_class);
 520                 BT_ASSERT(ret == 0);
 521         }
 522
 523         int_fc = borrow_named_int_field_class((void *) sc->packet_context_fc,
 524                 "events_discarded");
 525         if (int_fc) {
 526                 if (int_fc->meaning == CTF_FIELD_CLASS_MEANING_DISC_EV_REC_COUNTER_SNAPSHOT) {
 527                         ret = bt_stream_class_set_packets_have_discarded_event_counter_snapshot(
 528                                 ir_sc, BT_TRUE);
 529                         BT_ASSERT(ret == 0);
 530                 }
 531         }
 532
 533         int_fc = borrow_named_int_field_class((void *) sc->packet_context_fc,
 534                 "packet_seq_num");
 535         if (int_fc) {
 536                 if (int_fc->meaning == CTF_FIELD_CLASS_MEANING_PACKET_COUNTER_SNAPSHOT) {
 537                         ret = bt_stream_class_set_packets_have_packet_counter_snapshot(
 538                                 ir_sc, BT_TRUE);
 539                         BT_ASSERT(ret == 0);
 540                 }
 541         }
 542
 543         int_fc = borrow_named_int_field_class((void *) sc->packet_context_fc,
 544                 "timestamp_begin");
 545         if (int_fc) {
 546                 if (int_fc->meaning == CTF_FIELD_CLASS_MEANING_PACKET_BEGINNING_TIME) {
 547                         ret = bt_stream_class_set_packets_have_default_beginning_clock_value(
 548                                 ir_sc, BT_TRUE);
 549                         BT_ASSERT(ret == 0);
 550                 }
 551         }
 552
 553         int_fc = borrow_named_int_field_class((void *) sc->packet_context_fc,
 554                 "timestamp_end");
 555         if (int_fc) {
 556                 if (int_fc->meaning == CTF_FIELD_CLASS_MEANING_PACKET_END_TIME) {
 557                         ret = bt_stream_class_set_packets_have_default_end_clock_value(
 558                                 ir_sc, BT_TRUE);
 559                         BT_ASSERT(ret == 0);
 560                 }
 561         }
 562
 563         sc->is_translated = true;
 564         sc->ir_sc = ir_sc;
 565
 566 end:
 567         return ir_sc;
 568 }
 569
 570 static inline
 571 int ctf_trace_class_to_ir(struct bt_trace *ir_trace,
 572                 struct ctf_trace_class *tc)
 573 {
 574         int ret = 0;
 575         uint64_t i;
 576
 577         if (tc->is_translated) {
 578                 goto end;
 579         }
 580
 581         if (tc->packet_header_fc) {
 582                 struct bt_field_class *ir_fc = scope_ctf_field_class_to_ir(
 583                         tc->packet_header_fc, tc, NULL, NULL);
 584
 585                 if (ir_fc) {
 586                         ret = bt_trace_set_packet_header_field_class(ir_trace,
 587                                 ir_fc);
 588                         BT_ASSERT(ret == 0);
 589                         bt_put(ir_fc);
 590                 }
 591         }
 592
 593         if (tc->name->len > 0) {
 594                 ret = bt_trace_set_name(ir_trace, tc->name->str);
 595                 if (ret) {
 596                         goto end;
 597                 }
 598         }
 599
 600         if (tc->is_uuid_set) {
 601                 ret = bt_trace_set_uuid(ir_trace, tc->uuid);
 602                 if (ret) {
 603                         goto end;
 604                 }
 605         }
 606
 607         for (i = 0; i < tc->env_entries->len; i++) {
 608                 struct ctf_trace_class_env_entry *env_entry =
 609                         ctf_trace_class_borrow_env_entry_by_index(tc, i);
 610
 611                 switch (env_entry->type) {
 612                 case CTF_TRACE_CLASS_ENV_ENTRY_TYPE_INT:
 613                         ret = bt_trace_set_environment_entry_integer(
 614                                 ir_trace, env_entry->name->str,
 615                                 env_entry->value.i);
 616                         break;
 617                 case CTF_TRACE_CLASS_ENV_ENTRY_TYPE_STR:
 618                         ret = bt_trace_set_environment_entry_string(
 619                                 ir_trace, env_entry->name->str,
 620                                 env_entry->value.str->str);
 621                         break;
 622                 default:
 623                         abort();
 624                 }
 625
 626                 if (ret) {
 627                         goto end;
 628                 }
 629         }
 630
 631         ret = bt_trace_set_assigns_automatic_stream_class_id(ir_trace,
 632                 BT_FALSE);
 633         if (ret) {
 634                 goto end;
 635         }
 636
 637         tc->is_translated = true;
 638         tc->ir_tc = ir_trace;
 639
 640 end:
 641         return ret;
 642 }
 643
 644 BT_HIDDEN
 645 int ctf_trace_class_translate(struct bt_trace *ir_trace,
 646                 struct ctf_trace_class *tc)
 647 {
 648         int ret = 0;
 649         uint64_t i;
 650
 651         ret = ctf_trace_class_to_ir(ir_trace, tc);
 652         if (ret) {
 653                 goto end;
 654         }
 655
 656         for (i = 0; i < tc->stream_classes->len; i++) {
 657                 uint64_t j;
 658                 struct ctf_stream_class *sc = tc->stream_classes->pdata[i];
 659                 struct bt_stream_class *ir_sc;
 660
 661                 ir_sc = ctf_stream_class_to_ir(sc, ir_trace, tc);
 662                 if (!ir_sc) {
 663                         ret = -1;
 664                         goto end;
 665                 }
 666
 667                 for (j = 0; j < sc->event_classes->len; j++) {
 668                         struct ctf_event_class *ec = sc->event_classes->pdata[j];
 669                         struct bt_event_class *ir_ec;
 670
 671                         ir_ec = ctf_event_class_to_ir(ec, ir_sc, tc, sc);
 672                         if (!ir_ec) {
 673                                 ret = -1;
 674                                 goto end;
 675                         }
 676                 }
 677         }
 678
 679 end:
 680         return ret;
 681 }