2 * SPDX-License-Identifier: MIT
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>
13 #include "compat/limits.h"
15 #define CTF_INDEX_MAGIC 0xC1F1DCC1
16 #define CTF_INDEX_MAJOR 1
17 #define CTF_INDEX_MINOR 1
18 #define CTF_INDEX_1_0_SIZE offsetof(struct ctf_packet_index, stream_instance_id)
21 * Header at the beginning of each index file.
22 * All integer fields are stored in big endian.
24 struct ctf_packet_index_file_hdr
{
28 /* size of struct ctf_packet_index, in bytes. */
29 uint32_t packet_index_len
;
30 } __attribute__((__packed__
));
33 * Packet index generated for each trace packet store in a trace file.
34 * All integer fields are stored in big endian.
36 struct ctf_packet_index
{
37 uint64_t offset
; /* offset of the packet in the file, in bytes */
38 uint64_t packet_size
; /* packet size, in bits */
39 uint64_t content_size
; /* content size, in bits */
40 uint64_t timestamp_begin
;
41 uint64_t timestamp_end
;
42 uint64_t events_discarded
;
44 /* CTF_INDEX 1.0 limit */
45 uint64_t stream_instance_id
; /* ID of the channel instance */
46 uint64_t packet_seq_num
; /* packet sequence number */
47 } __attribute__((__packed__
));
49 #endif /* LTTNG_INDEX_H */