| 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 ctf_packet_index index_data; |
| 40 | |
| 41 | /* key1 = stream_id, key2 = net_seq_num */ |
| 42 | struct lttng_ht_node_two_u64 index_n; |
| 43 | struct rcu_head rcu_node; |
| 44 | pthread_mutex_t mutex; |
| 45 | }; |
| 46 | |
| 47 | struct relay_index *relay_index_create(uint64_t stream_id, |
| 48 | uint64_t net_seq_num); |
| 49 | struct relay_index *relay_index_find(uint64_t stream_id, uint64_t net_seq_num); |
| 50 | void relay_index_add(struct relay_index *index, struct relay_index **_index); |
| 51 | int relay_index_write(int fd, struct relay_index *index); |
| 52 | void relay_index_free(struct relay_index *index); |
| 53 | void relay_index_free_safe(struct relay_index *index); |
| 54 | void relay_index_delete(struct relay_index *index); |
| 55 | void relay_index_destroy_by_stream_id(uint64_t stream_id); |
| 56 | |
| 57 | #endif /* _RELAY_INDEX_H */ |