src/plugins/ctf/fs-sink/fs-sink-stream.cpp

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2019 Philippe Proulx <pproulx@efficios.com>
   5  */
   6
   7 #include <glib.h>
   8 #include <stdio.h>
   9
  10 #include <babeltrace2/babeltrace.h>
  11
  12 #define BT_COMP_LOG_SELF_COMP (stream->trace->fs_sink->self_comp)
  13 #define BT_LOG_OUTPUT_LEVEL   (stream->log_level)
  14 #define BT_LOG_TAG            "PLUGIN/SINK.CTF.FS/STREAM"
  15 #include "logging/comp-logging.h"
  16
  17 #include "common/assert.h"
  18 #include "compat/endian.h"
  19 #include "ctfser/ctfser.h"
  20
  21 #include "fs-sink-stream.hpp"
  22 #include "fs-sink-trace.hpp"
  23 #include "fs-sink.hpp"
  24 #include "translate-trace-ir-to-ctf-ir.hpp"
  25
  26 void fs_sink_stream_destroy(struct fs_sink_stream *stream)
  27 {
  28     if (!stream) {
  29         goto end;
  30     }
  31
  32     bt_ctfser_fini(&stream->ctfser);
  33
  34     if (stream->file_name) {
  35         g_string_free(stream->file_name, TRUE);
  36         stream->file_name = NULL;
  37     }
  38
  39     bt_packet_put_ref(stream->packet_state.packet);
  40     g_free(stream);
  41
  42 end:
  43     return;
  44 }
  45
  46 static bool stream_file_name_exists(struct fs_sink_trace *trace, const char *name)
  47 {
  48     bool exists = false;
  49     GHashTableIter iter;
  50     gpointer key, value;
  51
  52     g_hash_table_iter_init(&iter, trace->streams);
  53
  54     while (g_hash_table_iter_next(&iter, &key, &value)) {
  55         struct fs_sink_stream *stream = (fs_sink_stream *) value;
  56
  57         if (strcmp(name, stream->file_name->str) == 0) {
  58             exists = true;
  59             goto end;
  60         }
  61     }
  62
  63 end:
  64     return exists;
  65 }
  66
  67 static GString *sanitize_stream_file_name(const char *file_name)
  68 {
  69     GString *san_file_name = g_string_new(NULL);
  70     const char *ch;
  71     gchar *basename;
  72
  73     BT_ASSERT(san_file_name);
  74     BT_ASSERT(file_name);
  75     basename = g_path_get_basename(file_name);
  76
  77     for (ch = basename; *ch != '\0'; ch++) {
  78         if (*ch == '/') {
  79             g_string_append_c(san_file_name, '_');
  80         } else {
  81             g_string_append_c(san_file_name, *ch);
  82         }
  83     }
  84
  85     /* Do not allow `.` and `..` either */
  86     if (strcmp(san_file_name->str, ".") == 0 || strcmp(san_file_name->str, "..") == 0) {
  87         g_string_assign(san_file_name, "stream");
  88     }
  89
  90     g_free(basename);
  91     return san_file_name;
  92 }
  93
  94 static GString *make_unique_stream_file_name(struct fs_sink_trace *trace, const char *base)
  95 {
  96     GString *san_base = sanitize_stream_file_name(base);
  97     GString *name = g_string_new(san_base->str);
  98     unsigned int suffix = 0;
  99
 100     BT_ASSERT(name);
 101
 102     while (stream_file_name_exists(trace, name->str) || strcmp(name->str, "metadata") == 0) {
 103         g_string_printf(name, "%s-%u", san_base->str, suffix);
 104         suffix++;
 105     }
 106
 107     g_string_free(san_base, TRUE);
 108     return name;
 109 }
 110
 111 static void set_stream_file_name(struct fs_sink_stream *stream)
 112 {
 113     const char *base_name = bt_stream_get_name(stream->ir_stream);
 114
 115     if (!base_name) {
 116         base_name = "stream";
 117     }
 118
 119     BT_ASSERT(!stream->file_name);
 120     stream->file_name = make_unique_stream_file_name(stream->trace, base_name);
 121 }
 122
 123 struct fs_sink_stream *fs_sink_stream_create(struct fs_sink_trace *trace,
 124                                              const bt_stream *ir_stream)
 125 {
 126     struct fs_sink_stream *stream = g_new0(struct fs_sink_stream, 1);
 127     int ret;
 128     GString *path = g_string_new(trace->path->str);
 129
 130     if (!stream) {
 131         goto end;
 132     }
 133
 134     stream->log_level = trace->log_level;
 135     stream->trace = trace;
 136     stream->ir_stream = ir_stream;
 137     stream->packet_state.beginning_cs = UINT64_C(-1);
 138     stream->packet_state.end_cs = UINT64_C(-1);
 139     stream->prev_packet_state.end_cs = UINT64_C(-1);
 140     stream->prev_packet_state.discarded_events_counter = UINT64_C(-1);
 141     stream->prev_packet_state.seq_num = UINT64_C(-1);
 142     ret = try_translate_stream_class_trace_ir_to_ctf_ir(
 143         trace->fs_sink, trace->trace, bt_stream_borrow_class_const(ir_stream), &stream->sc);
 144     if (ret) {
 145         goto error;
 146     }
 147
 148     set_stream_file_name(stream);
 149     g_string_append_printf(path, "/%s", stream->file_name->str);
 150     ret = bt_ctfser_init(&stream->ctfser, path->str, stream->log_level);
 151     if (ret) {
 152         goto error;
 153     }
 154
 155     g_hash_table_insert(trace->streams, (gpointer) ir_stream, stream);
 156     goto end;
 157
 158 error:
 159     fs_sink_stream_destroy(stream);
 160     stream = NULL;
 161
 162 end:
 163     if (path) {
 164         g_string_free(path, TRUE);
 165     }
 166
 167     return stream;
 168 }
 169
 170 static int write_field(struct fs_sink_stream *stream, struct fs_sink_ctf_field_class *fc,
 171                        const bt_field *field);
 172
 173 static inline int write_bool_field(struct fs_sink_stream *stream,
 174                                    struct fs_sink_ctf_field_class_bool *fc, const bt_field *field)
 175 {
 176     /*
 177      * CTF 1.8 has no boolean field class type, so this component
 178      * translates this boolean field to an 8-bit unsigned integer
 179      * field which has the value 0 (false) or 1 (true).
 180      */
 181     return bt_ctfser_write_unsigned_int(&stream->ctfser, bt_field_bool_get_value(field) ? 1 : 0,
 182                                         fc->base.base.alignment, fc->base.size, BYTE_ORDER);
 183 }
 184
 185 static inline int write_bit_array_field(struct fs_sink_stream *stream,
 186                                         struct fs_sink_ctf_field_class_bit_array *fc,
 187                                         const bt_field *field)
 188 {
 189     /*
 190      * CTF 1.8 has no bit array field class type, so this component
 191      * translates this bit array field to an unsigned integer field.
 192      */
 193     return bt_ctfser_write_unsigned_int(&stream->ctfser,
 194                                         bt_field_bit_array_get_value_as_integer(field),
 195                                         fc->base.alignment, fc->size, BYTE_ORDER);
 196 }
 197
 198 static inline int write_int_field(struct fs_sink_stream *stream,
 199                                   struct fs_sink_ctf_field_class_int *fc, const bt_field *field)
 200 {
 201     int ret;
 202
 203     if (fc->is_signed) {
 204         ret = bt_ctfser_write_signed_int(&stream->ctfser, bt_field_integer_signed_get_value(field),
 205                                          fc->base.base.alignment, fc->base.size, BYTE_ORDER);
 206     } else {
 207         ret = bt_ctfser_write_unsigned_int(&stream->ctfser,
 208                                            bt_field_integer_unsigned_get_value(field),
 209                                            fc->base.base.alignment, fc->base.size, BYTE_ORDER);
 210     }
 211
 212     return ret;
 213 }
 214
 215 static inline int write_float_field(struct fs_sink_stream *stream,
 216                                     struct fs_sink_ctf_field_class_float *fc, const bt_field *field)
 217 {
 218     int ret;
 219     double val;
 220
 221     if (fc->base.size == 32) {
 222         val = (double) bt_field_real_single_precision_get_value(field);
 223         ret = bt_ctfser_write_float32(&stream->ctfser, val, fc->base.base.alignment, BYTE_ORDER);
 224     } else {
 225         val = bt_field_real_double_precision_get_value(field);
 226         ret = bt_ctfser_write_float64(&stream->ctfser, val, fc->base.base.alignment, BYTE_ORDER);
 227     }
 228
 229     return ret;
 230 }
 231
 232 static inline int write_string_field(struct fs_sink_stream *stream, const bt_field *field)
 233 {
 234     return bt_ctfser_write_string(&stream->ctfser, bt_field_string_get_value(field));
 235 }
 236
 237 static inline int write_array_base_field_elements(struct fs_sink_stream *stream,
 238                                                   struct fs_sink_ctf_field_class_array_base *fc,
 239                                                   const bt_field *field)
 240 {
 241     uint64_t i;
 242     uint64_t len = bt_field_array_get_length(field);
 243     int ret = 0;
 244
 245     for (i = 0; i < len; i++) {
 246         const bt_field *elem_field = bt_field_array_borrow_element_field_by_index_const(field, i);
 247         ret = write_field(stream, fc->elem_fc, elem_field);
 248         if (G_UNLIKELY(ret)) {
 249             goto end;
 250         }
 251     }
 252
 253 end:
 254     return ret;
 255 }
 256
 257 static inline int write_sequence_field(struct fs_sink_stream *stream,
 258                                        struct fs_sink_ctf_field_class_sequence *fc,
 259                                        const bt_field *field)
 260 {
 261     int ret;
 262
 263     if (fc->length_is_before) {
 264         ret = bt_ctfser_write_unsigned_int(&stream->ctfser, bt_field_array_get_length(field), 8, 32,
 265                                            BYTE_ORDER);
 266         if (G_UNLIKELY(ret)) {
 267             goto end;
 268         }
 269     }
 270
 271     ret = write_array_base_field_elements(stream, &fc->base, field);
 272
 273 end:
 274     return ret;
 275 }
 276
 277 static inline int write_struct_field(struct fs_sink_stream *stream,
 278                                      struct fs_sink_ctf_field_class_struct *fc,
 279                                      const bt_field *field, bool align_struct)
 280 {
 281     int ret = 0;
 282     uint64_t i;
 283
 284     if (G_LIKELY(align_struct)) {
 285         ret = bt_ctfser_align_offset_in_current_packet(&stream->ctfser, fc->base.alignment);
 286         if (G_UNLIKELY(ret)) {
 287             goto end;
 288         }
 289     }
 290
 291     for (i = 0; i < fc->members->len; i++) {
 292         const bt_field *memb_field =
 293             bt_field_structure_borrow_member_field_by_index_const(field, i);
 294         struct fs_sink_ctf_field_class *member_fc =
 295             fs_sink_ctf_field_class_struct_borrow_member_by_index(fc, i)->fc;
 296
 297         ret = write_field(stream, member_fc, memb_field);
 298         if (G_UNLIKELY(ret)) {
 299             goto end;
 300         }
 301     }
 302
 303 end:
 304     return ret;
 305 }
 306
 307 static inline int write_option_field(struct fs_sink_stream *stream,
 308                                      struct fs_sink_ctf_field_class_option *fc,
 309                                      const bt_field *field)
 310 {
 311     int ret;
 312     const bt_field *content_field = bt_field_option_borrow_field_const(field);
 313
 314     ret = bt_ctfser_write_unsigned_int(&stream->ctfser, content_field ? 1 : 0, 8, 8, BYTE_ORDER);
 315     if (G_UNLIKELY(ret)) {
 316         goto end;
 317     }
 318
 319     /*
 320      * CTF 1.8 has no option field class type, so this component
 321      * translates the option field class to a variant field class
 322      * where the options are:
 323      *
 324      * * An empty structure field class (field occupies 0 bits).
 325      * * The optional field class itself.
 326      *
 327      * If `content_field` is `NULL`, do not write anything (empty
 328      * structure).
 329      */
 330     if (content_field) {
 331         ret = write_field(stream, fc->content_fc, content_field);
 332     }
 333
 334 end:
 335     return ret;
 336 }
 337
 338 static inline int write_variant_field(struct fs_sink_stream *stream,
 339                                       struct fs_sink_ctf_field_class_variant *fc,
 340                                       const bt_field *field)
 341 {
 342     uint64_t opt_index = bt_field_variant_get_selected_option_index(field);
 343     int ret;
 344
 345     if (fc->tag_is_before) {
 346         ret = bt_ctfser_write_unsigned_int(&stream->ctfser, opt_index, 8, 16, BYTE_ORDER);
 347         if (G_UNLIKELY(ret)) {
 348             goto end;
 349         }
 350     }
 351
 352     ret = write_field(stream,
 353                       fs_sink_ctf_field_class_variant_borrow_option_by_index(fc, opt_index)->fc,
 354                       bt_field_variant_borrow_selected_option_field_const(field));
 355
 356 end:
 357     return ret;
 358 }
 359
 360 static int write_field(struct fs_sink_stream *stream, struct fs_sink_ctf_field_class *fc,
 361                        const bt_field *field)
 362 {
 363     int ret;
 364
 365     switch (fc->type) {
 366     case FS_SINK_CTF_FIELD_CLASS_TYPE_BOOL:
 367         ret = write_bool_field(stream, fs_sink_ctf_field_class_as_bool(fc), field);
 368         break;
 369     case FS_SINK_CTF_FIELD_CLASS_TYPE_BIT_ARRAY:
 370         ret = write_bit_array_field(stream, fs_sink_ctf_field_class_as_bit_array(fc), field);
 371         break;
 372     case FS_SINK_CTF_FIELD_CLASS_TYPE_INT:
 373         ret = write_int_field(stream, fs_sink_ctf_field_class_as_int(fc), field);
 374         break;
 375     case FS_SINK_CTF_FIELD_CLASS_TYPE_FLOAT:
 376         ret = write_float_field(stream, fs_sink_ctf_field_class_as_float(fc), field);
 377         break;
 378     case FS_SINK_CTF_FIELD_CLASS_TYPE_STRING:
 379         ret = write_string_field(stream, field);
 380         break;
 381     case FS_SINK_CTF_FIELD_CLASS_TYPE_STRUCT:
 382         ret = write_struct_field(stream, fs_sink_ctf_field_class_as_struct(fc), field, true);
 383         break;
 384     case FS_SINK_CTF_FIELD_CLASS_TYPE_ARRAY:
 385         ret = write_array_base_field_elements(stream, fs_sink_ctf_field_class_as_array_base(fc),
 386                                               field);
 387         break;
 388     case FS_SINK_CTF_FIELD_CLASS_TYPE_SEQUENCE:
 389         ret = write_sequence_field(stream, fs_sink_ctf_field_class_as_sequence(fc), field);
 390         break;
 391     case FS_SINK_CTF_FIELD_CLASS_TYPE_OPTION:
 392         ret = write_option_field(stream, fs_sink_ctf_field_class_as_option(fc), field);
 393         break;
 394     case FS_SINK_CTF_FIELD_CLASS_TYPE_VARIANT:
 395         ret = write_variant_field(stream, fs_sink_ctf_field_class_as_variant(fc), field);
 396         break;
 397     default:
 398         bt_common_abort();
 399     }
 400
 401     return ret;
 402 }
 403
 404 static inline int write_event_header(struct fs_sink_stream *stream, const bt_clock_snapshot *cs,
 405                                      struct fs_sink_ctf_event_class *ec)
 406 {
 407     int ret;
 408
 409     /* Event class ID */
 410     ret = bt_ctfser_write_byte_aligned_unsigned_int(
 411         &stream->ctfser, bt_event_class_get_id(ec->ir_ec), 8, 64, BYTE_ORDER);
 412     if (G_UNLIKELY(ret)) {
 413         goto end;
 414     }
 415
 416     /* Time */
 417     if (stream->sc->default_clock_class) {
 418         BT_ASSERT_DBG(cs);
 419         ret = bt_ctfser_write_byte_aligned_unsigned_int(
 420             &stream->ctfser, bt_clock_snapshot_get_value(cs), 8, 64, BYTE_ORDER);
 421         if (G_UNLIKELY(ret)) {
 422             goto end;
 423         }
 424     }
 425
 426 end:
 427     return ret;
 428 }
 429
 430 int fs_sink_stream_write_event(struct fs_sink_stream *stream, const bt_clock_snapshot *cs,
 431                                const bt_event *event, struct fs_sink_ctf_event_class *ec)
 432 {
 433     int ret;
 434     const bt_field *field;
 435
 436     /* Header */
 437     ret = write_event_header(stream, cs, ec);
 438     if (G_UNLIKELY(ret)) {
 439         goto end;
 440     }
 441
 442     /* Common context */
 443     if (stream->sc->event_common_context_fc) {
 444         field = bt_event_borrow_common_context_field_const(event);
 445         BT_ASSERT_DBG(field);
 446         ret = write_struct_field(
 447             stream, fs_sink_ctf_field_class_as_struct(stream->sc->event_common_context_fc), field,
 448             true);
 449         if (G_UNLIKELY(ret)) {
 450             goto end;
 451         }
 452     }
 453
 454     /* Specific context */
 455     if (ec->spec_context_fc) {
 456         field = bt_event_borrow_specific_context_field_const(event);
 457         BT_ASSERT_DBG(field);
 458         ret = write_struct_field(stream, fs_sink_ctf_field_class_as_struct(ec->spec_context_fc),
 459                                  field, true);
 460         if (G_UNLIKELY(ret)) {
 461             goto end;
 462         }
 463     }
 464
 465     /* Specific context */
 466     if (ec->payload_fc) {
 467         field = bt_event_borrow_payload_field_const(event);
 468         BT_ASSERT_DBG(field);
 469         ret = write_struct_field(stream, fs_sink_ctf_field_class_as_struct(ec->payload_fc), field,
 470                                  true);
 471         if (G_UNLIKELY(ret)) {
 472             goto end;
 473         }
 474     }
 475
 476 end:
 477     return ret;
 478 }
 479
 480 static int write_packet_context(struct fs_sink_stream *stream)
 481 {
 482     int ret;
 483
 484     /* Packet total size */
 485     ret = bt_ctfser_write_byte_aligned_unsigned_int(
 486         &stream->ctfser, stream->packet_state.total_size, 8, 64, BYTE_ORDER);
 487     if (ret) {
 488         goto end;
 489     }
 490
 491     /* Packet content size */
 492     ret = bt_ctfser_write_byte_aligned_unsigned_int(
 493         &stream->ctfser, stream->packet_state.content_size, 8, 64, BYTE_ORDER);
 494     if (ret) {
 495         goto end;
 496     }
 497
 498     if (stream->sc->packets_have_ts_begin) {
 499         /* Beginning time */
 500         ret = bt_ctfser_write_byte_aligned_unsigned_int(
 501             &stream->ctfser, stream->packet_state.beginning_cs, 8, 64, BYTE_ORDER);
 502         if (ret) {
 503             goto end;
 504         }
 505     }
 506
 507     if (stream->sc->packets_have_ts_end) {
 508         /* End time */
 509         ret = bt_ctfser_write_byte_aligned_unsigned_int(
 510             &stream->ctfser, stream->packet_state.end_cs, 8, 64, BYTE_ORDER);
 511         if (ret) {
 512             goto end;
 513         }
 514     }
 515
 516     if (stream->sc->has_discarded_events) {
 517         /* Discarded event counter */
 518         ret = bt_ctfser_write_byte_aligned_unsigned_int(
 519             &stream->ctfser, stream->packet_state.discarded_events_counter, 8, 64, BYTE_ORDER);
 520         if (ret) {
 521             goto end;
 522         }
 523     }
 524
 525     /* Sequence number */
 526     ret = bt_ctfser_write_byte_aligned_unsigned_int(&stream->ctfser, stream->packet_state.seq_num,
 527                                                     8, 64, BYTE_ORDER);
 528     if (ret) {
 529         goto end;
 530     }
 531
 532     /* Other members */
 533     if (stream->sc->packet_context_fc) {
 534         const bt_field *packet_context_field;
 535
 536         BT_ASSERT(stream->packet_state.packet);
 537         packet_context_field = bt_packet_borrow_context_field_const(stream->packet_state.packet);
 538         BT_ASSERT(packet_context_field);
 539         ret = write_struct_field(stream,
 540                                  fs_sink_ctf_field_class_as_struct(stream->sc->packet_context_fc),
 541                                  packet_context_field, false);
 542         if (ret) {
 543             goto end;
 544         }
 545     }
 546
 547 end:
 548     return ret;
 549 }
 550
 551 int fs_sink_stream_open_packet(struct fs_sink_stream *stream, const bt_clock_snapshot *cs,
 552                                const bt_packet *packet)
 553 {
 554     int ret;
 555     uint64_t i;
 556
 557     BT_ASSERT(!stream->packet_state.is_open);
 558     bt_packet_put_ref(stream->packet_state.packet);
 559     stream->packet_state.packet = packet;
 560     bt_packet_get_ref(stream->packet_state.packet);
 561     if (cs) {
 562         stream->packet_state.beginning_cs = bt_clock_snapshot_get_value(cs);
 563     }
 564
 565     /* Open packet */
 566     ret = bt_ctfser_open_packet(&stream->ctfser);
 567     if (ret) {
 568         /* bt_ctfser_open_packet() logs errors */
 569         goto end;
 570     }
 571
 572     /* Packet header: magic */
 573     ret = bt_ctfser_write_byte_aligned_unsigned_int(&stream->ctfser, UINT64_C(0xc1fc1fc1), 8, 32,
 574                                                     BYTE_ORDER);
 575     if (ret) {
 576         BT_COMP_LOGE("Error writing packet header magic: stream-file-name=%s",
 577                      stream->file_name->str);
 578         goto end;
 579     }
 580
 581     /* Packet header: UUID */
 582     for (i = 0; i < BT_UUID_LEN; i++) {
 583         ret = bt_ctfser_write_byte_aligned_unsigned_int(
 584             &stream->ctfser, (uint64_t) stream->sc->trace->uuid[i], 8, 8, BYTE_ORDER);
 585         if (ret) {
 586             BT_COMP_LOGE("Error writing packet header UUID: stream-file-name=%s",
 587                          stream->file_name->str);
 588             goto end;
 589         }
 590     }
 591
 592     /* Packet header: stream class ID */
 593     ret = bt_ctfser_write_byte_aligned_unsigned_int(
 594         &stream->ctfser, bt_stream_class_get_id(stream->sc->ir_sc), 8, 64, BYTE_ORDER);
 595     if (ret) {
 596         BT_COMP_LOGE("Error writing packet header stream class id: "
 597                      "stream-file-name=%s, stream-class-id=%" PRIu64,
 598                      stream->file_name->str, bt_stream_class_get_id(stream->sc->ir_sc));
 599         goto end;
 600     }
 601
 602     /* Packet header: stream ID */
 603     ret = bt_ctfser_write_byte_aligned_unsigned_int(
 604         &stream->ctfser, bt_stream_get_id(stream->ir_stream), 8, 64, BYTE_ORDER);
 605     if (ret) {
 606         BT_COMP_LOGE("Error writing packet header stream id: "
 607                      "stream-file-name=%s, stream-id=%" PRIu64,
 608                      stream->file_name->str, bt_stream_get_id(stream->ir_stream));
 609         goto end;
 610     }
 611
 612     /* Save packet context's offset to rewrite it later */
 613     stream->packet_state.context_offset_bits =
 614         bt_ctfser_get_offset_in_current_packet_bits(&stream->ctfser);
 615
 616     /* Write packet context just to advance to content (first event) */
 617     ret = write_packet_context(stream);
 618     if (ret) {
 619         goto end;
 620     }
 621
 622     stream->packet_state.is_open = true;
 623
 624 end:
 625     return ret;
 626 }
 627
 628 int fs_sink_stream_close_packet(struct fs_sink_stream *stream, const bt_clock_snapshot *cs)
 629 {
 630     int ret;
 631
 632     BT_ASSERT(stream->packet_state.is_open);
 633
 634     if (cs) {
 635         stream->packet_state.end_cs = bt_clock_snapshot_get_value(cs);
 636     }
 637
 638     stream->packet_state.content_size =
 639         bt_ctfser_get_offset_in_current_packet_bits(&stream->ctfser);
 640     stream->packet_state.total_size = (stream->packet_state.content_size + 7) & ~UINT64_C(7);
 641
 642     /* Rewrite packet context */
 643     bt_ctfser_set_offset_in_current_packet_bits(&stream->ctfser,
 644                                                 stream->packet_state.context_offset_bits);
 645     ret = write_packet_context(stream);
 646     if (ret) {
 647         goto end;
 648     }
 649
 650     /* Close packet */
 651     bt_ctfser_close_current_packet(&stream->ctfser, stream->packet_state.total_size / 8);
 652
 653     /* Partially copy current packet state to previous packet state */
 654     stream->prev_packet_state.end_cs = stream->packet_state.end_cs;
 655     stream->prev_packet_state.discarded_events_counter =
 656         stream->packet_state.discarded_events_counter;
 657     stream->prev_packet_state.seq_num = stream->packet_state.seq_num;
 658
 659     /* Reset current packet state */
 660     stream->packet_state.beginning_cs = UINT64_C(-1);
 661     stream->packet_state.end_cs = UINT64_C(-1);
 662     stream->packet_state.content_size = 0;
 663     stream->packet_state.total_size = 0;
 664     stream->packet_state.seq_num += 1;
 665     stream->packet_state.context_offset_bits = 0;
 666     stream->packet_state.is_open = false;
 667     BT_PACKET_PUT_REF_AND_RESET(stream->packet_state.packet);
 668
 669 end:
 670     return ret;
 671 }