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5e96a467 MD |
1 | /* |
2 | * ust-core.c | |
3 | * | |
4 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; only | |
9 | * version 2.1 of the License. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with this library; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
4318ae1b | 21 | #include <lttng/usterr-signal-safe.h> |
c1fca457 | 22 | #include <lttng/ust-events.h> |
5e96a467 MD |
23 | #include <stdlib.h> |
24 | ||
c1fca457 MD |
25 | CDS_LIST_HEAD(ltt_transport_list); |
26 | ||
5e96a467 MD |
27 | void init_usterr(void) |
28 | { | |
29 | char *ust_debug; | |
30 | ||
31 | if (ust_loglevel == UST_LOGLEVEL_UNKNOWN) { | |
69400ac4 | 32 | ust_debug = getenv("LTTNG_UST_DEBUG"); |
5e96a467 MD |
33 | if (ust_debug) |
34 | ust_loglevel = UST_LOGLEVEL_DEBUG; | |
35 | else | |
36 | ust_loglevel = UST_LOGLEVEL_NORMAL; | |
37 | } | |
38 | } | |
c1fca457 MD |
39 | |
40 | struct ltt_transport *ltt_transport_find(const char *name) | |
41 | { | |
42 | struct ltt_transport *transport; | |
43 | ||
44 | cds_list_for_each_entry(transport, <t_transport_list, node) { | |
45 | if (!strcmp(transport->name, name)) | |
46 | return transport; | |
47 | } | |
48 | return NULL; | |
49 | } | |
50 | ||
51 | /** | |
52 | * ltt_transport_register - LTT transport registration | |
53 | * @transport: transport structure | |
54 | * | |
55 | * Registers a transport which can be used as output to extract the data out of | |
56 | * LTTng. Called with ust_lock held. | |
57 | */ | |
58 | void ltt_transport_register(struct ltt_transport *transport) | |
59 | { | |
60 | cds_list_add_tail(&transport->node, <t_transport_list); | |
61 | } | |
62 | ||
63 | /** | |
64 | * ltt_transport_unregister - LTT transport unregistration | |
65 | * @transport: transport structure | |
66 | * Called with ust_lock held. | |
67 | */ | |
68 | void ltt_transport_unregister(struct ltt_transport *transport) | |
69 | { | |
70 | cds_list_del(&transport->node); | |
71 | } |