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[lttng-tools.git] / include / lttng / lttng.h
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1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
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3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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17 */
18
19#ifndef _LIBLTTNGCTL_H
20#define _LIBLTTNGCTL_H
21
57167058 22#include <limits.h>
16421f6e 23#include <stdint.h>
8028d920 24#include <uuid/uuid.h>
57167058 25
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26/* Default unix group name for tracing.
27 */
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28#define DEFAULT_TRACING_GROUP "tracing"
29
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30/* Environment variable to set session daemon
31 * binary path.
32 */
33#define LTTNG_SESSIOND_PATH_ENV "LTTNG_SESSIOND_PATH"
34
96243366 35/* UUID string length (including \0) */
fac6795d 36#define UUID_STR_LEN 37
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37/* UUID short string version length (including \0) */
38#define UUID_SHORT_STR_LEN 9
fac6795d 39
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40/* Trace type for lttng_trace.
41 */
42enum lttng_trace_type {
43 KERNEL, USERSPACE,
44};
45
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46/* Simple structure representing a session.
47 */
48struct lttng_session {
49 char name[NAME_MAX];
96243366 50 uuid_t uuid;
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51};
52
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53/* Simple trace representation.
54 */
55struct lttng_trace {
56 char name[NAME_MAX];
57 pid_t pid;
58 enum lttng_trace_type type;
59};
60
894be886 61extern int lttng_create_session(char *name);
8028d920 62extern int lttng_destroy_session(uuid_t *uuid);
fac6795d 63extern int lttng_connect_sessiond(void);
87378cf5 64extern int lttng_disconnect_sessiond(void);
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65extern int lttng_set_tracing_group(const char *name);
66extern int lttng_check_session_daemon(void);
67extern const char *lttng_get_readable_code(int code);
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68extern int lttng_ust_list_apps(pid_t **pids);
69extern int lttng_list_sessions(struct lttng_session **sessions);
1657e9bb 70extern int lttng_list_traces(uuid_t *uuid, struct lttng_trace **traces);
96243366 71extern void lttng_set_current_session_uuid(uuid_t *uuid);
df0da139 72extern int lttng_ust_create_trace(pid_t pid);
ce3d728c 73extern int lttng_ust_start_trace(pid_t pid);
520ff687 74extern int lttng_ust_stop_trace(pid_t pid);
fac6795d 75
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76/*
77 * Kernel tracer control
78 */
79extern int lttng_kernel_enable_event(char *event_name);
80extern int lttng_kernel_disable_event(char *event_name);
81extern int lttng_kernel_create_session(void);
82extern int lttng_kernel_start_tracing(void);
83extern int lttng_kernel_stop_tracing(void);
20fe2104 84extern int lttng_kernel_create_channel(void);
a5c5a2bd 85extern int lttng_kernel_open_metadata(void);
1df4dedd 86
fac6795d 87#endif /* _LIBLTTNGCTL_H */
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