| 1 | /* |
| 2 | * Copyright (C) 2013 Julien Desfossez <jdesfossez@efficios.com> |
| 3 | * Copyright (C) 2013 David Goulet <dgoulet@efficios.com> |
| 4 | * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0-only |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | #ifndef _INDEX_H |
| 11 | #define _INDEX_H |
| 12 | |
| 13 | #include "ctf-index.hpp" |
| 14 | |
| 15 | #include <common/fs-handle.hpp> |
| 16 | #include <common/trace-chunk.hpp> |
| 17 | |
| 18 | #include <inttypes.h> |
| 19 | #include <urcu/ref.h> |
| 20 | |
| 21 | struct lttng_index_file { |
| 22 | struct fs_handle *file; |
| 23 | uint32_t major; |
| 24 | uint32_t minor; |
| 25 | uint32_t element_len; |
| 26 | struct lttng_trace_chunk *trace_chunk; |
| 27 | struct urcu_ref ref; |
| 28 | }; |
| 29 | |
| 30 | /* |
| 31 | * create and open have refcount of 1. Use put to decrement the |
| 32 | * refcount. Destroys when reaching 0. Use "get" to increment refcount. |
| 33 | */ |
| 34 | enum lttng_trace_chunk_status |
| 35 | lttng_index_file_create_from_trace_chunk(struct lttng_trace_chunk *chunk, |
| 36 | const char *channel_path, |
| 37 | const char *stream_name, |
| 38 | uint64_t stream_file_size, |
| 39 | uint64_t stream_count, |
| 40 | uint32_t index_major, |
| 41 | uint32_t index_minor, |
| 42 | bool unlink_existing_file, |
| 43 | struct lttng_index_file **file); |
| 44 | |
| 45 | enum lttng_trace_chunk_status |
| 46 | lttng_index_file_create_from_trace_chunk_read_only(struct lttng_trace_chunk *chunk, |
| 47 | const char *channel_path, |
| 48 | const char *stream_name, |
| 49 | uint64_t stream_file_size, |
| 50 | uint64_t stream_file_index, |
| 51 | uint32_t index_major, |
| 52 | uint32_t index_minor, |
| 53 | bool expect_no_file, |
| 54 | 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 */ |