[lttng-tools.git] / src / common / index / ctf-index.h

/*
 * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
 *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *                      David Goulet <dgoulet@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef LTTNG_INDEX_H
#define LTTNG_INDEX_H

#include <common/compat/endian.h>
#include <common/macros.h>

#include <stdint.h>
#include <limits.h>
#include <stddef.h>

#define CTF_INDEX_MAGIC 0xC1F1DCC1
#define CTF_INDEX_MAJOR 1
#define CTF_INDEX_MINOR 1

/*
 * Header at the beginning of each index file.
 * All integer fields are stored in big endian.
 */
struct ctf_packet_index_file_hdr {
	uint32_t magic;
	uint32_t index_major;
	uint32_t index_minor;
	/* struct packet_index_len, in bytes */
	uint32_t packet_index_len;
} __attribute__((__packed__));

/*
 * Packet index generated for each trace packet stored in a trace file.
 * All integer fields are stored in big endian.
 */
struct ctf_packet_index {
	uint64_t offset;		/* offset of the packet in the file, in bytes */
	uint64_t packet_size;		/* packet size, in bits */
	uint64_t content_size;		/* content size, in bits */
	uint64_t timestamp_begin;
	uint64_t timestamp_end;
	uint64_t events_discarded;
	uint64_t stream_id;		/* ID of the channel */
	/* CTF_INDEX 1.0 limit */
	uint64_t stream_instance_id;	/* ID of the channel instance */
	uint64_t packet_seq_num;	/* packet sequence number */
} __attribute__((__packed__));

static inline size_t ctf_packet_index_len(uint32_t major, uint32_t minor)
{
	if (major == 1) {
		switch (minor) {
		case 0:
			return offsetof(struct ctf_packet_index, stream_id)
				+ member_sizeof(struct ctf_packet_index,
						stream_id);
		case 1:
			return offsetof(struct ctf_packet_index, packet_seq_num)
				+ member_sizeof(struct ctf_packet_index,
						packet_seq_num);
		default:
			abort();
		}
	}
	abort();
}

static inline uint32_t lttng_to_index_major(uint32_t lttng_major,
		uint32_t lttng_minor __attribute__((unused)))
{
	if (lttng_major == 2) {
		return 1;
	}
	abort();
}

static inline uint32_t lttng_to_index_minor(uint32_t lttng_major,
		uint32_t lttng_minor)
{
	if (lttng_major == 2) {
		if (lttng_minor < 8) {
			return 0;
		} else {
			return 1;
		}
	}
	abort();
}

static inline void ctf_packet_index_file_hdr_init(
		struct ctf_packet_index_file_hdr *hdr,
		uint32_t idx_major, uint32_t idx_minor)
{
	memset(hdr, 0, sizeof(*hdr));
	hdr->magic = htobe32(CTF_INDEX_MAGIC);
	hdr->index_major = htobe32(idx_major);
	hdr->index_minor = htobe32(idx_minor);
	hdr->packet_index_len = htobe32(
			ctf_packet_index_len(idx_major, idx_minor));
}

#endif /* LTTNG_INDEX_H */
Commit	Line	Data
309167d2 JD	1	/*
309167d2 JD	2	* Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
c404302f	3	* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
309167d2 JD	4	* David Goulet <dgoulet@efficios.com>
309167d2 JD	5	*
c404302f JD	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
309167d2	12	*
c404302f JD	13	* The above copyright notice and this permission notice shall be included in
c404302f JD	14	* all copies or substantial portions of the Software.
309167d2	15	*
c404302f JD	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	19	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	22	* SOFTWARE.
309167d2 JD	23	*/
	24
	25	#ifndef LTTNG_INDEX_H
	26	#define LTTNG_INDEX_H
	27
6be28242 JG	28	#include <common/compat/endian.h>
	29	#include <common/macros.h>
	30
	31	#include <stdint.h>
309167d2	32	#include <limits.h>
6be28242	33	#include <stddef.h>
309167d2	34
50adc264 JD	35	#define CTF_INDEX_MAGIC 0xC1F1DCC1
50adc264 JD	36	#define CTF_INDEX_MAJOR 1
234cd636	37	#define CTF_INDEX_MINOR 1
309167d2 JD	38
	39	/*
	40	* Header at the beginning of each index file.
	41	* All integer fields are stored in big endian.
	42	*/
50adc264 JD	43	struct ctf_packet_index_file_hdr {
50adc264 JD	44	uint32_t magic;
309167d2 JD	45	uint32_t index_major;
309167d2 JD	46	uint32_t index_minor;
50adc264 JD	47	/* struct packet_index_len, in bytes */
50adc264 JD	48	uint32_t packet_index_len;
309167d2 JD	49	} __attribute__((__packed__));
	50
	51	/*
7591bab1	52	* Packet index generated for each trace packet stored in a trace file.
309167d2 JD	53	* All integer fields are stored in big endian.
309167d2 JD	54	*/
50adc264	55	struct ctf_packet_index {
309167d2 JD	56	uint64_t offset; /* offset of the packet in the file, in bytes */
	57	uint64_t packet_size; /* packet size, in bits */
	58	uint64_t content_size; /* content size, in bits */
	59	uint64_t timestamp_begin;
	60	uint64_t timestamp_end;
	61	uint64_t events_discarded;
234cd636 JD	62	uint64_t stream_id; /* ID of the channel */
	63	/* CTF_INDEX 1.0 limit */
	64	uint64_t stream_instance_id; /* ID of the channel instance */
	65	uint64_t packet_seq_num; /* packet sequence number */
309167d2 JD	66	} __attribute__((__packed__));
309167d2 JD	67
f8f3885c MD	68	static inline size_t ctf_packet_index_len(uint32_t major, uint32_t minor)
	69	{
	70	if (major == 1) {
	71	switch (minor) {
	72	case 0:
	73	return offsetof(struct ctf_packet_index, stream_id)
	74	+ member_sizeof(struct ctf_packet_index,
	75	stream_id);
	76	case 1:
	77	return offsetof(struct ctf_packet_index, packet_seq_num)
	78	+ member_sizeof(struct ctf_packet_index,
	79	packet_seq_num);
	80	default:
	81	abort();
	82	}
	83	}
	84	abort();
	85	}
	86
	87	static inline uint32_t lttng_to_index_major(uint32_t lttng_major,
5e943e75	88	uint32_t lttng_minor __attribute__((unused)))
f8f3885c MD	89	{
	90	if (lttng_major == 2) {
	91	return 1;
	92	}
	93	abort();
	94	}
	95
	96	static inline uint32_t lttng_to_index_minor(uint32_t lttng_major,
	97	uint32_t lttng_minor)
	98	{
	99	if (lttng_major == 2) {
	100	if (lttng_minor < 8) {
	101	return 0;
	102	} else {
	103	return 1;
	104	}
	105	}
	106	abort();
	107	}
	108
6be28242 JG	109	static inline void ctf_packet_index_file_hdr_init(
	110	struct ctf_packet_index_file_hdr *hdr,
	111	uint32_t idx_major, uint32_t idx_minor)
	112	{
	113	memset(hdr, 0, sizeof(*hdr));
	114	hdr->magic = htobe32(CTF_INDEX_MAGIC);
	115	hdr->index_major = htobe32(idx_major);
	116	hdr->index_minor = htobe32(idx_minor);
	117	hdr->packet_index_len = htobe32(
	118	ctf_packet_index_len(idx_major, idx_minor));
	119	}
	120
309167d2	121	#endif /* LTTNG_INDEX_H */