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7591bab1 MD |
1 | #ifndef _CTF_TRACE_H |
2 | #define _CTF_TRACE_H | |
3 | ||
d3e2ba59 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> |
d3e2ba59 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 | ||
d3e2ba59 | 23 | #include <inttypes.h> |
7591bab1 | 24 | #include <urcu/ref.h> |
d3e2ba59 JD |
25 | |
26 | #include <common/hashtable/hashtable.h> | |
27 | ||
2a174661 | 28 | #include "session.h" |
58eb9381 | 29 | #include "stream.h" |
7591bab1 | 30 | #include "viewer-stream.h" |
d3e2ba59 JD |
31 | |
32 | struct ctf_trace { | |
7591bab1 MD |
33 | /* |
34 | * The ctf_trace reflock nests inside the stream reflock. | |
35 | */ | |
36 | pthread_mutex_t reflock; /* Protects refcounting */ | |
37 | struct urcu_ref ref; /* Every stream has a ref on the trace. */ | |
38 | struct relay_session *session; /* Back ref to trace session */ | |
39 | ||
40 | /* | |
41 | * The ctf_trace lock nests inside the session lock. | |
42 | */ | |
43 | pthread_mutex_t lock; | |
d3e2ba59 | 44 | uint64_t id; |
7591bab1 | 45 | struct relay_viewer_stream *viewer_metadata_stream; /* RCU protected */ |
2a174661 | 46 | |
7591bab1 MD |
47 | /* |
48 | * Relay streams associated with this ctf trace. | |
49 | * Updates are protected by the stream_list lock. | |
50 | * Traversals are protected by RCU. | |
51 | */ | |
2a174661 | 52 | struct cds_list_head stream_list; |
7591bab1 MD |
53 | pthread_mutex_t stream_list_lock; |
54 | ||
55 | /* | |
56 | * Node within session trace hash table. Node is indexed by | |
57 | * stream path name. | |
58 | */ | |
59 | struct lttng_ht_node_str node; | |
60 | struct rcu_head rcu_node; /* For call_rcu teardown. */ | |
d3e2ba59 JD |
61 | }; |
62 | ||
7591bab1 MD |
63 | struct ctf_trace *ctf_trace_get_by_path_or_create(struct relay_session *session, |
64 | char *path_name); | |
65 | bool ctf_trace_get(struct ctf_trace *trace); | |
66 | void ctf_trace_put(struct ctf_trace *trace); | |
2a174661 | 67 | |
7591bab1 | 68 | int ctf_trace_close(struct ctf_trace *trace); |
2a174661 | 69 | |
7591bab1 | 70 | struct relay_viewer_stream *ctf_trace_get_viewer_metadata_stream(struct ctf_trace *trace); |
d3e2ba59 JD |
71 | |
72 | #endif /* _CTF_TRACE_H */ |