src/plugins/lttng-utils/debug-info/trace-ir-metadata-copy.c

   1 /*
   2  * Babeltrace - Trace IR metadata object copy
   3  *
   4  * Copyright (c) 2015 EfficiOS Inc. and Linux Foundation
   5  * Copyright (c) 2018 Philippe Proulx <pproulx@efficios.com>
   6  * Copyright (c) 2019 Francis Deslauriers <francis.deslauriers@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26
  27 #define BT_COMP_LOG_SELF_COMP self_comp
  28 #define BT_LOG_OUTPUT_LEVEL log_level
  29 #define BT_LOG_TAG "PLUGIN/FLT.LTTNG-UTILS.DEBUG-INFO/TRACE-IR-META-COPY"
  30 #include "logging/comp-logging.h"
  31
  32 #include <inttypes.h>
  33 #include <stdint.h>
  34
  35 #include "common/assert.h"
  36
  37 #include "trace-ir-metadata-copy.h"
  38 #include "trace-ir-metadata-field-class-copy.h"
  39 #include "utils.h"
  40
  41 BT_HIDDEN
  42 int copy_trace_class_content(const bt_trace_class *in_trace_class,
  43                 bt_trace_class *out_trace_class, bt_logging_level log_level,
  44                 bt_self_component *self_comp)
  45 {
  46         BT_COMP_LOGD("Copying content of trace class: in-tc-addr=%p, out-tc-addr=%p",
  47                         in_trace_class, out_trace_class);
  48
  49         /*
  50          * Safe to use the same value object because it's frozen at this
  51          * point.
  52          */
  53         bt_trace_class_set_user_attributes(out_trace_class,
  54                 bt_trace_class_borrow_user_attributes_const(in_trace_class));
  55
  56         /* Use the same stream class ids as in the origin trace class. */
  57         bt_trace_class_set_assigns_automatic_stream_class_id(out_trace_class,
  58                         BT_FALSE);
  59         BT_COMP_LOGD("Copied content of trace class: in-tc-addr=%p, out-tc-addr=%p",
  60                         in_trace_class, out_trace_class);
  61         return 0;
  62 }
  63
  64 static
  65 int copy_clock_class_content(const bt_clock_class *in_clock_class,
  66                 bt_clock_class *out_clock_class, bt_logging_level log_level,
  67                 bt_self_component *self_comp)
  68 {
  69         const char *clock_class_name, *clock_class_description;
  70         int64_t seconds;
  71         uint64_t cycles;
  72         bt_uuid in_uuid;
  73         int ret = 0;
  74
  75         BT_COMP_LOGD("Copying content of clock class: in-cc-addr=%p, out-cc-addr=%p",
  76                         in_clock_class, out_clock_class);
  77
  78         clock_class_name = bt_clock_class_get_name(in_clock_class);
  79
  80         if (clock_class_name) {
  81                 if (bt_clock_class_set_name(out_clock_class, clock_class_name)
  82                                 != BT_CLOCK_CLASS_SET_NAME_STATUS_OK) {
  83                         BT_COMP_LOGE("Error setting clock class' name cc-addr=%p, name=%p",
  84                                 out_clock_class, clock_class_name);
  85                         out_clock_class = NULL;
  86                         ret = -1;
  87                         goto error;
  88                 }
  89         }
  90
  91         /*
  92          * Safe to use the same value object because it's frozen at this
  93          * point.
  94          */
  95         bt_clock_class_set_user_attributes(out_clock_class,
  96                 bt_clock_class_borrow_user_attributes_const(in_clock_class));
  97
  98         clock_class_description = bt_clock_class_get_description(in_clock_class);
  99
 100         if (clock_class_description) {
 101                 if (bt_clock_class_set_description(out_clock_class,
 102                                 clock_class_description) !=
 103                                 BT_CLOCK_CLASS_SET_DESCRIPTION_STATUS_OK) {
 104                         BT_COMP_LOGE("Error setting clock class' description cc-addr=%p, "
 105                                 "name=%p", out_clock_class, clock_class_description);
 106                         out_clock_class = NULL;
 107                         ret = -1;
 108                         goto error;
 109                 }
 110         }
 111
 112         in_uuid = bt_clock_class_get_uuid(in_clock_class);
 113         if (in_uuid) {
 114                 bt_clock_class_set_uuid(out_clock_class, in_uuid);
 115         }
 116
 117         bt_clock_class_set_frequency(out_clock_class,
 118                         bt_clock_class_get_frequency(in_clock_class));
 119         bt_clock_class_set_precision(out_clock_class,
 120                         bt_clock_class_get_precision(in_clock_class));
 121         bt_clock_class_get_offset(in_clock_class, &seconds, &cycles);
 122         bt_clock_class_set_offset(out_clock_class, seconds, cycles);
 123         bt_clock_class_set_origin_is_unix_epoch(out_clock_class,
 124                         bt_clock_class_origin_is_unix_epoch(in_clock_class));
 125
 126         BT_COMP_LOGD("Copied content of clock class: in-cc-addr=%p, out-cc-addr=%p",
 127                         in_clock_class, out_clock_class);
 128
 129 error:
 130         return ret;
 131 }
 132
 133 static
 134 bt_clock_class *borrow_mapped_clock_class(
 135                 struct trace_ir_metadata_maps *md_maps,
 136                 const bt_clock_class *in_clock_class)
 137 {
 138         BT_ASSERT(md_maps);
 139         BT_ASSERT(in_clock_class);
 140
 141         return g_hash_table_lookup(md_maps->clock_class_map,
 142                         (gpointer) in_clock_class);
 143 }
 144
 145 static
 146 bt_clock_class *create_new_mapped_clock_class(
 147                 bt_self_component *self_comp,
 148                 struct trace_ir_metadata_maps *md_maps,
 149                 const bt_clock_class *in_clock_class)
 150 {
 151         bt_clock_class *out_clock_class;
 152         int ret;
 153         bt_logging_level log_level = md_maps->log_level;
 154
 155         BT_COMP_LOGD("Creating new mapped clock class: in-cc-addr=%p",
 156                         in_clock_class);
 157
 158         BT_ASSERT(md_maps);
 159         BT_ASSERT(in_clock_class);
 160
 161         BT_ASSERT(!borrow_mapped_clock_class(md_maps, in_clock_class));
 162
 163         out_clock_class = bt_clock_class_create(self_comp);
 164         if (!out_clock_class) {
 165                 BT_COMP_LOGE_STR("Cannot create clock class");
 166                 goto end;
 167         }
 168         /* If not, create a new one and add it to the mapping. */
 169         ret = copy_clock_class_content(in_clock_class, out_clock_class,
 170                 log_level, self_comp);
 171         if (ret) {
 172                 BT_COMP_LOGE_STR("Cannot copy clock class");
 173                 goto end;
 174         }
 175
 176         g_hash_table_insert(md_maps->clock_class_map,
 177                         (gpointer) in_clock_class, out_clock_class);
 178
 179         BT_COMP_LOGD("Created new mapped clock class: in-cc-addr=%p, out-cc-addr=%p",
 180                         in_clock_class, out_clock_class);
 181 end:
 182         return out_clock_class;
 183 }
 184
 185 BT_HIDDEN
 186 int copy_stream_class_content(struct trace_ir_maps *ir_maps,
 187                 const bt_stream_class *in_stream_class,
 188                 bt_stream_class *out_stream_class)
 189 {
 190         struct trace_ir_metadata_maps *md_maps;
 191         const bt_clock_class *in_clock_class;
 192         bt_clock_class *out_clock_class;
 193         const bt_field_class *in_packet_context_fc, *in_common_context_fc;
 194         bt_field_class *out_packet_context_fc, *out_common_context_fc;
 195         const char *in_name;
 196         int ret = 0;
 197         bt_logging_level log_level = ir_maps->log_level;
 198         bt_self_component *self_comp = ir_maps->self_comp;
 199
 200         BT_COMP_LOGD("Copying content of stream class: in-sc-addr=%p, out-sc-addr=%p",
 201                         in_stream_class, out_stream_class);
 202
 203         md_maps = borrow_metadata_maps_from_input_stream_class(ir_maps, in_stream_class);
 204         in_clock_class = bt_stream_class_borrow_default_clock_class_const(
 205                                 in_stream_class);
 206
 207         if (in_clock_class) {
 208                 /* Copy the clock class. */
 209                 out_clock_class =
 210                         borrow_mapped_clock_class(md_maps, in_clock_class);
 211                 if (!out_clock_class) {
 212                         out_clock_class = create_new_mapped_clock_class(
 213                                         ir_maps->self_comp, md_maps,
 214                                         in_clock_class);
 215                 }
 216                 bt_stream_class_set_default_clock_class(out_stream_class,
 217                                 out_clock_class);
 218
 219         }
 220
 221         /*
 222          * Safe to use the same value object because it's frozen at this
 223          * point.
 224          */
 225         bt_stream_class_set_user_attributes(out_stream_class,
 226                 bt_stream_class_borrow_user_attributes_const(in_stream_class));
 227
 228         bt_stream_class_set_supports_packets(
 229                 out_stream_class,
 230                 bt_stream_class_supports_packets(in_stream_class),
 231                 bt_stream_class_packets_have_beginning_default_clock_snapshot(
 232                         in_stream_class),
 233                 bt_stream_class_packets_have_end_default_clock_snapshot(
 234                         in_stream_class));
 235         bt_stream_class_set_supports_discarded_events(
 236                 out_stream_class,
 237                 bt_stream_class_supports_discarded_events(in_stream_class),
 238                 bt_stream_class_discarded_events_have_default_clock_snapshots(
 239                         in_stream_class));
 240         bt_stream_class_set_supports_discarded_packets(
 241                 out_stream_class,
 242                 bt_stream_class_supports_discarded_packets(in_stream_class),
 243                 bt_stream_class_discarded_packets_have_default_clock_snapshots(
 244                         in_stream_class));
 245
 246         in_name = bt_stream_class_get_name(in_stream_class);
 247         if (in_name) {
 248                 if (bt_stream_class_set_name(out_stream_class, in_name) !=
 249                                 BT_STREAM_CLASS_SET_NAME_STATUS_OK) {
 250                         BT_COMP_LOGE("Error set stream class name: out-sc-addr=%p, "
 251                                 "name=%s", out_stream_class, in_name);
 252                         ret = -1;
 253                         goto error;
 254                 }
 255         }
 256
 257         bt_stream_class_set_assigns_automatic_stream_id(out_stream_class,
 258                         BT_FALSE);
 259         bt_stream_class_set_assigns_automatic_event_class_id(out_stream_class,
 260                         BT_FALSE);
 261
 262         /*
 263          * Add the input packet context field class to the context to
 264          * resolution in the further steps.
 265          */
 266         in_packet_context_fc =
 267                 bt_stream_class_borrow_packet_context_field_class_const(
 268                                 in_stream_class);
 269         md_maps->fc_resolving_ctx->packet_context =
 270                 in_packet_context_fc;
 271
 272         if (in_packet_context_fc) {
 273                 /* Copy packet context. */
 274                 out_packet_context_fc = create_field_class_copy(
 275                                 md_maps, in_packet_context_fc);
 276
 277                 ret = copy_field_class_content(md_maps,
 278                         in_packet_context_fc, out_packet_context_fc);
 279                 if (ret) {
 280                         ret = -1;
 281                         goto error;
 282                 }
 283
 284                 if (bt_stream_class_set_packet_context_field_class(
 285                                 out_stream_class, out_packet_context_fc) !=
 286                                 BT_STREAM_CLASS_SET_FIELD_CLASS_STATUS_OK) {
 287                         BT_COMP_LOGE("Error setting stream class' packet context "
 288                                 "field class: sc-addr=%p, packet-fc-addr=%p",
 289                                 out_stream_class, out_packet_context_fc);
 290                         ret = -1;
 291                         goto error;
 292                 }
 293         }
 294
 295         /*
 296          * Add the input common context field class to the context to
 297          * resolution in the further steps.
 298          */
 299         in_common_context_fc =
 300                 bt_stream_class_borrow_event_common_context_field_class_const(
 301                                 in_stream_class);
 302         md_maps->fc_resolving_ctx->event_common_context =
 303                 in_common_context_fc;
 304
 305         if (in_common_context_fc) {
 306                 /* Copy common context. */
 307                 /* TODO: I find it a bit awkward to have this special function
 308                  * here to add the debug-info field class. I would like to
 309                  * abstract that.*/
 310                 out_common_context_fc = create_field_class_copy(
 311                                 md_maps, in_common_context_fc);
 312
 313                 ret = copy_event_common_context_field_class_content(
 314                                 md_maps, ir_maps->debug_info_field_class_name,
 315                                 in_common_context_fc, out_common_context_fc);
 316                 if (ret) {
 317                         goto error;
 318                 }
 319
 320                 if (bt_stream_class_set_event_common_context_field_class(
 321                                 out_stream_class, out_common_context_fc) !=
 322                                 BT_STREAM_CLASS_SET_FIELD_CLASS_STATUS_OK) {
 323                         BT_COMP_LOGE("Error setting stream class' packet context "
 324                                 "field class: sc-addr=%p, packet-fc-addr=%p",
 325                                 out_stream_class, out_common_context_fc);
 326                         ret = -1;
 327                         goto error;
 328                 }
 329         }
 330
 331         /* Set packet snapshot boolean fields. */
 332         BT_COMP_LOGD("Copied content of stream class: in-sc-addr=%p, out-sc-addr=%p",
 333                         in_stream_class, out_stream_class);
 334 error:
 335         return ret;
 336 }
 337
 338 BT_HIDDEN
 339 int copy_event_class_content(struct trace_ir_maps *ir_maps,
 340                 const bt_event_class *in_event_class,
 341                 bt_event_class *out_event_class)
 342 {
 343         struct trace_ir_metadata_maps *md_maps;
 344         const char *in_event_class_name, *in_emf_uri;
 345         bt_property_availability prop_avail;
 346         bt_event_class_log_level ec_log_level;
 347         bt_field_class *out_specific_context_fc, *out_payload_fc;
 348         const bt_field_class *in_event_specific_context, *in_event_payload;
 349         int ret = 0;
 350         bt_logging_level log_level = ir_maps->log_level;
 351         bt_self_component *self_comp = ir_maps->self_comp;
 352
 353         BT_COMP_LOGD("Copying content of event class: in-ec-addr=%p, out-ec-addr=%p",
 354                         in_event_class, out_event_class);
 355
 356         /* Copy event class name. */
 357         in_event_class_name = bt_event_class_get_name(in_event_class);
 358         if (in_event_class_name) {
 359                 if (bt_event_class_set_name(out_event_class,
 360                                 in_event_class_name) !=
 361                                 BT_EVENT_CLASS_SET_NAME_STATUS_OK) {
 362                         BT_COMP_LOGE("Error setting event class' name: ec-addr=%p, "
 363                                 "name=%s", out_event_class, in_event_class_name);
 364                         ret = -1;
 365                         goto error;
 366                 }
 367         }
 368
 369         /*
 370          * Safe to use the same value object because it's frozen at this
 371          * point.
 372          */
 373         bt_event_class_set_user_attributes(out_event_class,
 374                 bt_event_class_borrow_user_attributes_const(in_event_class));
 375
 376         /* Copy event class loglevel. */
 377         prop_avail = bt_event_class_get_log_level(in_event_class,
 378                 &ec_log_level);
 379         if (prop_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE) {
 380                 bt_event_class_set_log_level(out_event_class,
 381                                 ec_log_level);
 382         }
 383
 384         /* Copy event class emf uri. */
 385         in_emf_uri = bt_event_class_get_emf_uri(in_event_class);
 386         if (in_emf_uri) {
 387                 if (bt_event_class_set_emf_uri(out_event_class, in_emf_uri) !=
 388                                 BT_EVENT_CLASS_SET_EMF_URI_STATUS_OK) {
 389                         BT_COMP_LOGE("Error setting event class' emf uri: ec-addr=%p, "
 390                                 "emf uri=%s", out_event_class, in_emf_uri);
 391                         ret = -1;
 392                         goto error;
 393                 }
 394         }
 395
 396         md_maps = borrow_metadata_maps_from_input_event_class(ir_maps, in_event_class);
 397         /*
 398          * Add the input event class' specific ctx to te
 399          * context.
 400          */
 401         in_event_specific_context =
 402                 bt_event_class_borrow_specific_context_field_class_const(
 403                                 in_event_class);
 404
 405         md_maps->fc_resolving_ctx->event_specific_context =
 406                 in_event_specific_context;
 407
 408         if (in_event_specific_context) {
 409                 /* Copy the specific context of this event class. */
 410                 out_specific_context_fc = create_field_class_copy(md_maps,
 411                                 in_event_specific_context);
 412
 413                 ret = copy_field_class_content(md_maps,
 414                                 in_event_specific_context, out_specific_context_fc);
 415                 if (ret) {
 416                         goto error;
 417                 }
 418                 /*
 419                  * Add the output specific context to the output event
 420                  * class.
 421                  */
 422                 if (bt_event_class_set_specific_context_field_class(
 423                                 out_event_class, out_specific_context_fc) !=
 424                                 BT_EVENT_CLASS_SET_FIELD_CLASS_STATUS_OK) {
 425                         BT_COMP_LOGE("Error setting event class' specific context "
 426                                 "field class: ec-addr=%p, ctx-fc-addr=%p",
 427                                 out_event_class, out_specific_context_fc);
 428                         ret = -1;
 429                         goto error;
 430                 }
 431         }
 432
 433         /*
 434          * Add the input event class' payload field class to
 435          * the context.
 436          */
 437         in_event_payload = bt_event_class_borrow_payload_field_class_const(
 438                                 in_event_class);
 439
 440         md_maps->fc_resolving_ctx->event_payload = in_event_payload;
 441
 442         if (in_event_payload) {
 443         /* Copy the payload of this event class. */
 444                 out_payload_fc = create_field_class_copy(md_maps,
 445                                 in_event_payload);
 446                 ret = copy_field_class_content(md_maps,
 447                                 in_event_payload, out_payload_fc);
 448                 if (ret) {
 449                         goto error;
 450                 }
 451
 452                 /* Add the output payload to the output event class. */
 453                 if (bt_event_class_set_payload_field_class(
 454                                 out_event_class, out_payload_fc) !=
 455                                 BT_EVENT_CLASS_SET_FIELD_CLASS_STATUS_OK) {
 456                         BT_COMP_LOGE("Error setting event class' payload "
 457                                 "field class: ec-addr=%p, payload-fc-addr=%p",
 458                                 out_event_class, out_payload_fc);
 459                         ret = -1;
 460                         goto error;
 461                 }
 462         }
 463
 464         BT_COMP_LOGD("Copied content of event class: in-ec-addr=%p, out-ec-addr=%p",
 465                         in_event_class, out_event_class);
 466 error:
 467         return ret;
 468 }
 469
 470 BT_HIDDEN
 471 int copy_event_common_context_field_class_content(
 472                 struct trace_ir_metadata_maps *md_maps,
 473                 const char *debug_info_fc_name,
 474                 const bt_field_class *in_field_class,
 475                 bt_field_class *out_field_class)
 476 {
 477         bt_field_class *debug_field_class = NULL, *bin_field_class = NULL,
 478                        *func_field_class = NULL, *src_field_class = NULL;
 479         int ret = 0;
 480         bt_logging_level log_level = md_maps->log_level;
 481         bt_self_component *self_comp = md_maps->self_comp;
 482
 483         BT_COMP_LOGD("Copying content of event common context field class: "
 484                 "in-fc-addr=%p, out-fc-addr=%p", in_field_class, out_field_class);
 485
 486         /* Copy the content of the input common context. */
 487         ret = copy_field_class_content(md_maps, in_field_class, out_field_class);
 488         if (ret) {
 489                 goto error;
 490         }
 491
 492         /*
 493          * If this event common context has the necessary fields to compute the
 494          * debug information append the debug-info field class to the event
 495          * common context.
 496          */
 497         if (is_event_common_ctx_dbg_info_compatible(in_field_class, debug_info_fc_name)) {
 498                 /*
 499                  * The struct field and 3 sub-fields are not stored in the
 500                  * field class map because they don't have input equivalent.
 501                  * We need to put our reference each of these field classes
 502                  * once they are added to their respective containing field
 503                  * classes.
 504                  */
 505                 debug_field_class = bt_field_class_structure_create(
 506                                 md_maps->output_trace_class);
 507                 if (!debug_field_class) {
 508                         BT_COMP_LOGE_STR("Failed to create debug_info structure.");
 509                         ret = -1;
 510                         goto error;
 511                 }
 512
 513                 bin_field_class = bt_field_class_string_create(
 514                                 md_maps->output_trace_class);
 515                 if (!bin_field_class) {
 516                         BT_COMP_LOGE_STR("Failed to create string for field=bin.");
 517                         ret = -1;
 518                         goto error;
 519                 }
 520
 521                 func_field_class = bt_field_class_string_create(
 522                                 md_maps->output_trace_class);
 523                 if (!func_field_class) {
 524                         BT_COMP_LOGE_STR("Failed to create string for field=func.");
 525                         ret = -1;
 526                         goto error;
 527                 }
 528
 529                 src_field_class = bt_field_class_string_create(
 530                                 md_maps->output_trace_class);
 531                 if (!src_field_class) {
 532                         BT_COMP_LOGE_STR("Failed to create string for field=src.");
 533                         ret = -1;
 534                         goto error;
 535                 }
 536
 537                 if (bt_field_class_structure_append_member(
 538                                 debug_field_class, "bin", bin_field_class) !=
 539                                 BT_FIELD_CLASS_STRUCTURE_APPEND_MEMBER_STATUS_OK) {
 540                         BT_COMP_LOGE_STR("Failed to add a field to debug_info "
 541                                         "struct: field=bin.");
 542                         ret = -1;
 543                         goto error;
 544                 }
 545                 BT_FIELD_CLASS_PUT_REF_AND_RESET(bin_field_class);
 546
 547                 if (bt_field_class_structure_append_member(
 548                                 debug_field_class, "func", func_field_class) !=
 549                                 BT_FIELD_CLASS_STRUCTURE_APPEND_MEMBER_STATUS_OK) {
 550                         BT_COMP_LOGE_STR("Failed to add a field to debug_info "
 551                                         "struct: field=func.");
 552                         ret = -1;
 553                         goto error;
 554                 }
 555                 BT_FIELD_CLASS_PUT_REF_AND_RESET(func_field_class);
 556
 557                 if (bt_field_class_structure_append_member(
 558                                 debug_field_class, "src", src_field_class) !=
 559                                 BT_FIELD_CLASS_STRUCTURE_APPEND_MEMBER_STATUS_OK) {
 560                         BT_COMP_LOGE_STR("Failed to add a field to debug_info "
 561                                         "struct: field=src.");
 562                         ret = -1;
 563                         goto error;
 564                 }
 565                 BT_FIELD_CLASS_PUT_REF_AND_RESET(src_field_class);
 566
 567                 /*Add the filled debug-info field class to the common context. */
 568                 if (bt_field_class_structure_append_member(out_field_class,
 569                                 debug_info_fc_name, debug_field_class) !=
 570                                 BT_FIELD_CLASS_STRUCTURE_APPEND_MEMBER_STATUS_OK) {
 571                         BT_COMP_LOGE_STR("Failed to add debug_info field to "
 572                                         "event common context.");
 573                         ret = -1;
 574                         goto error;
 575                 }
 576                 BT_FIELD_CLASS_PUT_REF_AND_RESET(debug_field_class);
 577         }
 578         BT_COMP_LOGD("Copied content of event common context field class: "
 579                 "in-fc-addr=%p, out-fc-addr=%p", in_field_class, out_field_class);
 580         goto end;
 581
 582 error:
 583         if (debug_field_class) {
 584                 bt_field_class_put_ref(debug_field_class);
 585         }
 586         if (bin_field_class) {
 587                 bt_field_class_put_ref(bin_field_class);
 588         }
 589         if (func_field_class) {
 590                 bt_field_class_put_ref(func_field_class);
 591         }
 592         if (src_field_class) {
 593                 bt_field_class_put_ref(src_field_class);
 594         }
 595 end:
 596         return ret;
 597 }
 598
 599 BT_HIDDEN
 600 bt_field_class *create_field_class_copy(struct trace_ir_metadata_maps *md_maps,
 601                 const bt_field_class *in_field_class)
 602 {
 603         return create_field_class_copy_internal(md_maps, in_field_class);
 604 }
 605
 606 BT_HIDDEN
 607 int copy_field_class_content(struct trace_ir_metadata_maps *md_maps,
 608                 const bt_field_class *in_field_class,
 609                 bt_field_class *out_field_class)
 610 {
 611         return copy_field_class_content_internal(md_maps, in_field_class,
 612                         out_field_class);
 613 }