| 1 | /* |
| 2 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> |
| 3 | * David Goulet <dgoulet@efficios.com> |
| 4 | * 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License, version 2 only, as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 13 | * more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along with |
| 16 | * this program; if not, write to the Free Software Foundation, Inc., 51 |
| 17 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | */ |
| 19 | |
| 20 | #ifndef _INDEX_H |
| 21 | #define _INDEX_H |
| 22 | |
| 23 | #include <inttypes.h> |
| 24 | #include <urcu/ref.h> |
| 25 | |
| 26 | #include <common/trace-chunk.h> |
| 27 | #include "ctf-index.h" |
| 28 | |
| 29 | struct lttng_index_file { |
| 30 | int fd; |
| 31 | uint32_t major; |
| 32 | uint32_t minor; |
| 33 | uint32_t element_len; |
| 34 | struct lttng_trace_chunk *trace_chunk; |
| 35 | struct urcu_ref ref; |
| 36 | }; |
| 37 | |
| 38 | /* |
| 39 | * create and open have refcount of 1. Use put to decrement the |
| 40 | * refcount. Destroys when reaching 0. Use "get" to increment refcount. |
| 41 | */ |
| 42 | enum lttng_trace_chunk_status lttng_index_file_create_from_trace_chunk( |
| 43 | struct lttng_trace_chunk *chunk, |
| 44 | const char *channel_path, const char *stream_name, |
| 45 | uint64_t stream_file_size, uint64_t stream_count, |
| 46 | uint32_t index_major, uint32_t index_minor, |
| 47 | bool unlink_existing_file, struct lttng_index_file **file); |
| 48 | |
| 49 | enum lttng_trace_chunk_status lttng_index_file_create_from_trace_chunk_read_only( |
| 50 | struct lttng_trace_chunk *chunk, |
| 51 | const char *channel_path, const char *stream_name, |
| 52 | uint64_t stream_file_size, uint64_t stream_file_index, |
| 53 | uint32_t index_major, uint32_t index_minor, |
| 54 | bool expect_no_file, struct lttng_index_file **file); |
| 55 | |
| 56 | int lttng_index_file_write(const struct lttng_index_file *index_file, |
| 57 | const struct ctf_packet_index *element); |
| 58 | int lttng_index_file_read(const struct lttng_index_file *index_file, |
| 59 | struct ctf_packet_index *element); |
| 60 | |
| 61 | void lttng_index_file_get(struct lttng_index_file *index_file); |
| 62 | void lttng_index_file_put(struct lttng_index_file *index_file); |
| 63 | |
| 64 | #endif /* _INDEX_H */ |