Port: Use LTTNG_NAME_MAX instead of NAME_MAX
[lttng-tools.git] / include / lttng / domain.h
1 /*
2 * Copyright (C) 2014 - David Goulet <dgoulet@efficios.com>
3 *
4 * This library is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License, version 2.1 only,
6 * as published by the Free Software Foundation.
7 *
8 * This library is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
11 * for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this library; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16 */
17
18 #ifndef LTTNG_DOMAIN_H
19 #define LTTNG_DOMAIN_H
20
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24
25 #include <lttng/constant.h>
26
27 /*
28 * Domain types: the different possible tracers.
29 */
30 enum lttng_domain_type {
31 LTTNG_DOMAIN_KERNEL = 1, /* Linux Kernel tracer. */
32 LTTNG_DOMAIN_UST = 2, /* Global Userspace tracer. */
33 LTTNG_DOMAIN_JUL = 3, /* Java Util Logging. */
34 LTTNG_DOMAIN_LOG4J = 4, /* Java Log4j Framework. */
35 LTTNG_DOMAIN_PYTHON = 5, /* Python logging Framework. */
36 };
37
38 /* Buffer type for a specific domain. */
39 enum lttng_buffer_type {
40 LTTNG_BUFFER_PER_PID, /* Only supported by UST being the default. */
41 LTTNG_BUFFER_PER_UID, /* Only supported by UST. */
42 LTTNG_BUFFER_GLOBAL, /* Only supported by the Kernel. */
43 };
44
45 /*
46 * The structures should be initialized to zero before use.
47 */
48 #define LTTNG_DOMAIN_PADDING1 12
49 #define LTTNG_DOMAIN_PADDING2 LTTNG_SYMBOL_NAME_LEN + 32
50 struct lttng_domain {
51 enum lttng_domain_type type;
52 enum lttng_buffer_type buf_type;
53 char padding[LTTNG_DOMAIN_PADDING1];
54
55 union {
56 pid_t pid;
57 char exec_name[LTTNG_NAME_MAX];
58 char padding[LTTNG_DOMAIN_PADDING2];
59 } attr;
60 };
61
62 /*
63 * List the registered domain(s) of a session.
64 *
65 * Session name CAN NOT be NULL.
66 *
67 * Return the size (number of entries) of the "lttng_domain" array. Caller
68 * must free domains. On error, a negative LTTng error code is returned.
69 */
70 extern int lttng_list_domains(const char *session_name,
71 struct lttng_domain **domains);
72
73 #ifdef __cplusplus
74 }
75 #endif
76
77 #endif /* LTTNG_DOMAIN_H */
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