projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| 7591bab1 MD |
1 | #ifndef _RELAY_INDEX_H |
| 2 | #define _RELAY_INDEX_H | |
| 3 | ||
| 1c20f0e2 JD |
4 | /* |
| 5 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> | |
| 6 | * David Goulet <dgoulet@efficios.com> | |
| 7591bab1 | 7 | * 2015 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 1c20f0e2 JD |
8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it | |
| 10 | * under the terms of the GNU General Public License, version 2 only, as | |
| 11 | * published by the Free Software Foundation. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
| 14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 16 | * more details. | |
| 17 | * | |
| 18 | * You should have received a copy of the GNU General Public License along with | |
| 19 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
| 20 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 21 | */ | |
| 22 | ||
| 1c20f0e2 JD |
23 | #include <inttypes.h> |
| 24 | #include <pthread.h> | |
| 25 | ||
| 26 | #include <common/hashtable/hashtable.h> | |
| 27 | #include <common/index/index.h> | |
| 28 | ||
| 7591bab1 MD |
29 | #include "stream-fd.h" |
| 30 | ||
| 31 | struct relay_stream; | |
| 32 | ||
| 1c20f0e2 | 33 | struct relay_index { |
| 1c20f0e2 | 34 | /* |
| 7591bab1 | 35 | * index lock nests inside stream lock. |
| 1c20f0e2 | 36 | */ |
| 7591bab1 MD |
37 | pthread_mutex_t reflock; /* Protects refcounting. */ |
| 38 | struct urcu_ref ref; /* Reference from getters. */ | |
| 39 | struct relay_stream *stream; /* Back ref to stream */ | |
| 40 | ||
| 41 | pthread_mutex_t lock; | |
| 42 | /* | |
| 43 | * FD on which to write the index data. May differ from | |
| 44 | * stream->index_fd due to tracefile rotation. | |
| 45 | */ | |
| 46 | struct stream_fd *index_fd; | |
| 1c20f0e2 JD |
47 | |
| 48 | /* Index packet data. This is the data that is written on disk. */ | |
| 50adc264 | 49 | struct ctf_packet_index index_data; |
| 1c20f0e2 | 50 | |
| 7591bab1 MD |
51 | bool has_index_data; |
| 52 | bool flushed; | |
| 53 | bool in_hash_table; | |
| 54 | ||
| 55 | /* | |
| 56 | * Node within indexes_ht that corresponds to this struct | |
| 57 | * relay_index. Indexed by net_seq_num, which is unique for this | |
| 58 | * index across the stream. | |
| 59 | */ | |
| 60 | struct lttng_ht_node_u64 index_n; | |
| 61 | struct rcu_head rcu_node; /* For call_rcu teardown. */ | |
| 1c20f0e2 JD |
62 | }; |
| 63 | ||
| 7591bab1 | 64 | struct relay_index *relay_index_get_by_id_or_create(struct relay_stream *stream, |
| 1c20f0e2 | 65 | uint64_t net_seq_num); |
| 7591bab1 MD |
66 | void relay_index_put(struct relay_index *index); |
| 67 | int relay_index_set_fd(struct relay_index *index, struct stream_fd *index_fd, | |
| 68 | uint64_t data_offset); | |
| 69 | int relay_index_set_data(struct relay_index *index, | |
| 70 | const struct ctf_packet_index *data); | |
| 71 | int relay_index_try_flush(struct relay_index *index); | |
| 72 | ||
| 73 | void relay_index_close_all(struct relay_stream *stream); | |
| 3d07a857 MD |
74 | void relay_index_close_partial_fd(struct relay_stream *stream); |
| 75 | uint64_t relay_index_find_last(struct relay_stream *stream); | |
| 1c20f0e2 JD |
76 | |
| 77 | #endif /* _RELAY_INDEX_H */ |