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1 | /* |
2 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> | |
3 | * David Goulet <dgoulet@efficios.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License, version 2 only, as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
16 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | #ifndef _RELAY_INDEX_H | |
20 | #define _RELAY_INDEX_H | |
21 | ||
22 | #include <inttypes.h> | |
23 | #include <pthread.h> | |
24 | ||
25 | #include <common/hashtable/hashtable.h> | |
26 | #include <common/index/index.h> | |
27 | ||
28 | struct relay_index { | |
29 | /* FD on which to write the index data. */ | |
30 | int fd; | |
31 | /* | |
32 | * When destroying this object, this fd is checked and if valid, close it | |
33 | * so this is basically a lazy close of the previous fd corresponding to | |
34 | * the same stream id. This is used for the rotate file feature. | |
35 | */ | |
36 | int to_close_fd; | |
37 | ||
38 | /* Index packet data. This is the data that is written on disk. */ | |
39 | struct lttng_packet_index index_data; | |
40 | ||
41 | /* key1 = stream_id, key2 = net_seq_num */ | |
42 | struct lttng_ht_two_u64 key; | |
43 | struct lttng_ht_node_two_u64 index_n; | |
44 | struct rcu_head rcu_node; | |
45 | pthread_mutex_t mutex; | |
46 | }; | |
47 | ||
48 | struct relay_index *relay_index_create(uint64_t stream_id, | |
49 | uint64_t net_seq_num); | |
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50 | struct relay_index *relay_index_find(uint64_t stream_id, uint64_t net_seq_num); |
51 | void relay_index_add(struct relay_index *index, struct relay_index **_index); | |
52 | int relay_index_write(int fd, struct relay_index *index); | |
1c20f0e2 JD |
53 | void relay_index_free(struct relay_index *index); |
54 | void relay_index_free_safe(struct relay_index *index); | |
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55 | void relay_index_delete(struct relay_index *index); |
56 | void relay_index_destroy_by_stream_id(uint64_t stream_id); | |
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57 | |
58 | #endif /* _RELAY_INDEX_H */ |