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