Commit | Line | Data |
---|---|---|
58eb9381 DG |
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 | #define _GNU_SOURCE | |
20 | #include <common/common.h> | |
21 | ||
22 | #include "connection.h" | |
23 | #include "stream.h" | |
24 | ||
25 | static void rcu_free_connection(struct rcu_head *head) | |
26 | { | |
27 | struct relay_connection *conn = | |
28 | caa_container_of(head, struct relay_connection, rcu_node); | |
29 | ||
30 | lttcomm_destroy_sock(conn->sock); | |
31 | free(conn); | |
32 | } | |
33 | ||
34 | struct relay_connection *connection_find_by_sock(struct lttng_ht *ht, int sock) | |
35 | { | |
36 | struct lttng_ht_node_ulong *node; | |
37 | struct lttng_ht_iter iter; | |
38 | struct relay_connection *conn = NULL; | |
39 | ||
40 | assert(ht); | |
41 | assert(sock >= 0); | |
42 | ||
43 | lttng_ht_lookup(ht, (void *)((unsigned long) sock), &iter); | |
44 | node = lttng_ht_iter_get_node_ulong(&iter); | |
45 | if (!node) { | |
46 | DBG2("Relay connection by sock %d not found", sock); | |
47 | goto end; | |
48 | } | |
49 | conn = caa_container_of(node, struct relay_connection, sock_n); | |
50 | ||
51 | end: | |
52 | return conn; | |
53 | } | |
54 | ||
55 | void connection_delete(struct lttng_ht *ht, struct relay_connection *conn) | |
56 | { | |
57 | int ret; | |
58 | struct lttng_ht_iter iter; | |
59 | ||
60 | assert(ht); | |
61 | assert(conn); | |
62 | ||
63 | iter.iter.node = &conn->sock_n.node; | |
64 | ret = lttng_ht_del(ht, &iter); | |
65 | assert(!ret); | |
66 | } | |
67 | ||
68 | void connection_destroy(struct relay_connection *conn) | |
69 | { | |
70 | struct relay_stream *stream, *tmp_stream; | |
71 | ||
72 | assert(conn); | |
73 | ||
74 | /* Clean up recv list of this connection if any. */ | |
75 | cds_list_for_each_entry_safe(stream, tmp_stream, &conn->recv_head, | |
76 | recv_list) { | |
77 | cds_list_del(&stream->recv_list); | |
78 | } | |
79 | ||
80 | call_rcu(&conn->rcu_node, rcu_free_connection); | |
81 | } | |
82 | ||
83 | struct relay_connection *connection_create(void) | |
84 | { | |
85 | struct relay_connection *conn; | |
86 | ||
87 | conn = zmalloc(sizeof(*conn)); | |
88 | if (!conn) { | |
89 | PERROR("zmalloc relay connection"); | |
90 | goto error; | |
91 | } | |
92 | ||
93 | error: | |
94 | return conn; | |
95 | } | |
96 | ||
97 | void connection_init(struct relay_connection *conn) | |
98 | { | |
99 | assert(conn); | |
100 | assert(conn->sock); | |
101 | ||
102 | CDS_INIT_LIST_HEAD(&conn->recv_head); | |
103 | lttng_ht_node_init_ulong(&conn->sock_n, (unsigned long) conn->sock->fd); | |
104 | } | |
105 | ||
106 | void connection_free(struct relay_connection *conn) | |
107 | { | |
108 | assert(conn); | |
109 | ||
110 | free(conn); | |
111 | } |