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