projects / lttng-tools.git / blame
| 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 | #ifndef _CONNECTION_H | |
| 20 | #define _CONNECTION_H | |
| 21 | ||
| 22 | #include <limits.h> | |
| 23 | #include <inttypes.h> | |
| 24 | #include <pthread.h> | |
| 25 | #include <urcu.h> | |
| ed4bd02e | 26 | #include <urcu/wfqueue.h> |
| 58eb9381 DG |
27 | #include <urcu/list.h> |
| 28 | ||
| 29 | #include <common/hashtable/hashtable.h> | |
| 30 | #include <common/sessiond-comm/sessiond-comm.h> | |
| 31 | ||
| 32 | #include "session.h" | |
| 33 | ||
| 34 | enum connection_type { | |
| 35 | RELAY_DATA = 1, | |
| 36 | RELAY_CONTROL = 2, | |
| 37 | RELAY_VIEWER_COMMAND = 3, | |
| 38 | RELAY_VIEWER_NOTIFICATION = 4, | |
| 39 | }; | |
| 40 | ||
| 41 | /* | |
| 42 | * Internal structure to map a socket with the corresponding session. | |
| 43 | * A hashtable indexed on the socket FD is used for the lookups. | |
| 44 | */ | |
| 45 | struct relay_connection { | |
| 46 | struct lttcomm_sock *sock; | |
| 47 | struct relay_session *session; | |
| c3b7390b | 48 | struct relay_viewer_session *viewer_session; |
| 58eb9381 DG |
49 | struct cds_wfq_node qnode; |
| 50 | struct lttng_ht_node_ulong sock_n; | |
| 51 | struct rcu_head rcu_node; | |
| 52 | enum connection_type type; | |
| 53 | /* Protocol version to use for this connection. */ | |
| 54 | uint32_t major; | |
| 55 | uint32_t minor; | |
| 56 | uint64_t session_id; | |
| cd2ef1ef DG |
57 | |
| 58 | /* | |
| 59 | * This contains streams that are received on that connection. It's used to | |
| 60 | * store them until we get the streams sent command where they are removed | |
| 61 | * and flagged ready for the viewer. This is ONLY used by the control | |
| 62 | * thread thus any action on it should happen in that thread. | |
| 63 | */ | |
| 58eb9381 DG |
64 | struct cds_list_head recv_head; |
| 65 | unsigned int version_check_done:1; | |
| 66 | ||
| 67 | /* Pointer to the sessions HT that this connection can use. */ | |
| 68 | struct lttng_ht *sessions_ht; | |
| 69 | }; | |
| 70 | ||
| 71 | struct relay_connection *connection_find_by_sock(struct lttng_ht *ht, | |
| 72 | int sock); | |
| 73 | struct relay_connection *connection_create(void); | |
| 74 | void connection_init(struct relay_connection *conn); | |
| 75 | void connection_delete(struct lttng_ht *ht, struct relay_connection *conn); | |
| 76 | void connection_destroy(struct relay_connection *conn); | |
| 77 | void connection_free(struct relay_connection *conn); | |
| 78 | ||
| 79 | #endif /* _CONNECTION_H */ |