src/plugins/ctf/fs-src/lttng-index.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com>
   5  * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
   7  */
   8
   9 #ifndef LTTNG_INDEX_H
  10 #define LTTNG_INDEX_H
  11
  12 #include "compat/limits.h"
  13
  14 #define CTF_INDEX_MAGIC 0xC1F1DCC1
  15 #define CTF_INDEX_MAJOR 1
  16 #define CTF_INDEX_MINOR 1
  17
  18 /*
  19  * Header at the beginning of each index file.
  20  * All integer fields are stored in big endian.
  21  */
  22 struct ctf_packet_index_file_hdr {
  23         uint32_t magic;
  24         uint32_t index_major;
  25         uint32_t index_minor;
  26         /* size of struct ctf_packet_index, in bytes. */
  27         uint32_t packet_index_len;
  28 } __attribute__((__packed__));
  29
  30 /*
  31  * Packet index generated for each trace packet store in a trace file.
  32  * All integer fields are stored in big endian.
  33  */
  34 struct ctf_packet_index {
  35         uint64_t offset;                /* offset of the packet in the file, in bytes */
  36         uint64_t packet_size;           /* packet size, in bits */
  37         uint64_t content_size;          /* content size, in bits */
  38         uint64_t timestamp_begin;
  39         uint64_t timestamp_end;
  40         uint64_t events_discarded;
  41         uint64_t stream_id;
  42         /* CTF_INDEX 1.0 limit */
  43         uint64_t stream_instance_id;    /* ID of the channel instance */
  44         uint64_t packet_seq_num;        /* packet sequence number */
  45 } __attribute__((__packed__));
  46
  47 #endif /* LTTNG_INDEX_H */