projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | volatile enum ust_loglevel ust_loglevel; |
| 28 | ||
| 29 | void init_usterr(void) | |
| 30 | { | |
| 31 | char *ust_debug; | |
| 32 | ||
| 33 | if (ust_loglevel == UST_LOGLEVEL_UNKNOWN) { | |
| 69400ac4 | 34 | ust_debug = getenv("LTTNG_UST_DEBUG"); |
| 5e96a467 MD |
35 | if (ust_debug) |
| 36 | ust_loglevel = UST_LOGLEVEL_DEBUG; | |
| 37 | else | |
| 38 | ust_loglevel = UST_LOGLEVEL_NORMAL; | |
| 39 | } | |
| 40 | } | |
| c1fca457 MD |
41 | |
| 42 | struct ltt_transport *ltt_transport_find(const char *name) | |
| 43 | { | |
| 44 | struct ltt_transport *transport; | |
| 45 | ||
| 46 | cds_list_for_each_entry(transport, <t_transport_list, node) { | |
| 47 | if (!strcmp(transport->name, name)) | |
| 48 | return transport; | |
| 49 | } | |
| 50 | return NULL; | |
| 51 | } | |
| 52 | ||
| 53 | /** | |
| 54 | * ltt_transport_register - LTT transport registration | |
| 55 | * @transport: transport structure | |
| 56 | * | |
| 57 | * Registers a transport which can be used as output to extract the data out of | |
| 58 | * LTTng. Called with ust_lock held. | |
| 59 | */ | |
| 60 | void ltt_transport_register(struct ltt_transport *transport) | |
| 61 | { | |
| 62 | cds_list_add_tail(&transport->node, <t_transport_list); | |
| 63 | } | |
| 64 | ||
| 65 | /** | |
| 66 | * ltt_transport_unregister - LTT transport unregistration | |
| 67 | * @transport: transport structure | |
| 68 | * Called with ust_lock held. | |
| 69 | */ | |
| 70 | void ltt_transport_unregister(struct ltt_transport *transport) | |
| 71 | { | |
| 72 | cds_list_del(&transport->node); | |
| 73 | } |