event-rule: introduce event rule tracepoint
[lttng-tools.git] / include / lttng / lttng.h
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826d496d 1/*
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2 * lttng.h
3 *
4 * Linux Trace Toolkit Control Library Header File
5 *
ab5be9fa 6 * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
fac6795d 7 *
ab5be9fa 8 * SPDX-License-Identifier: LGPL-2.1-only
82a3637f 9 *
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10 */
11
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12#ifndef LTTNG_H
13#define LTTNG_H
fac6795d 14
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15/* Error codes that can be returned by API calls */
16#include <lttng/lttng-error.h>
17
1239a312 18/* Include every LTTng ABI/API available. */
a58c490f 19#include <lttng/action/action.h>
0c51e8f3 20#include <lttng/action/group.h>
a58c490f 21#include <lttng/action/notify.h>
bfb2ec6a 22#include <lttng/action/rotate-session.h>
757c48a2 23#include <lttng/action/snapshot-session.h>
58397d0d 24#include <lttng/action/start-session.h>
931bdbaa 25#include <lttng/action/stop-session.h>
260625bb 26#include <lttng/channel.h>
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27#include <lttng/clear-handle.h>
28#include <lttng/clear.h>
a58c490f 29#include <lttng/condition/buffer-usage.h>
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30#include <lttng/condition/condition.h>
31#include <lttng/condition/evaluation.h>
e8360425 32#include <lttng/condition/session-consumed-size.h>
c19092cd 33#include <lttng/condition/session-rotation.h>
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34#include <lttng/destruction-handle.h>
35#include <lttng/domain.h>
36#include <lttng/endpoint.h>
7a3dcaf6 37#include <lttng/event-rule/event-rule.h>
077192fd 38#include <lttng/event-rule/kprobe.h>
e6a39346 39#include <lttng/event-rule/syscall.h>
6d420eff 40#include <lttng/event-rule/tracepoint.h>
df08d338 41#include <lttng/event-rule/uprobe.h>
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42#include <lttng/event.h>
43#include <lttng/handle.h>
44#include <lttng/health.h>
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45#include <lttng/load.h>
46#include <lttng/location.h>
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47#include <lttng/notification/channel.h>
48#include <lttng/notification/notification.h>
259c2674 49#include <lttng/rotation.h>
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50#include <lttng/save.h>
51#include <lttng/session-descriptor.h>
52#include <lttng/session.h>
53#include <lttng/snapshot.h>
2d97a006 54#include <lttng/tracker.h>
260625bb 55#include <lttng/trigger/trigger.h>
11a49e7e 56#include <lttng/userspace-probe.h>
1239a312 57
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58#ifdef __cplusplus
59extern "C" {
60#endif
61
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62enum lttng_calibrate_type {
63 LTTNG_CALIBRATE_FUNCTION = 0,
54c90d10 64};
f3ed775e 65
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66/* Machine interface output type */
67enum lttng_mi_output_type {
68 LTTNG_MI_XML = 1 /* XML output */
69};
70
8d326ab9 71#define LTTNG_CALIBRATE_PADDING1 16
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72struct lttng_calibrate {
73 enum lttng_calibrate_type type;
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74
75 char padding[LTTNG_CALIBRATE_PADDING1];
54c90d10 76};
d0254c7c 77
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78/*
79 * Check if a session daemon is alive.
1e46a50f 80 *
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81 * Return 1 if alive or 0 if not. On error, returns a negative negative LTTng
82 * error code.
7d29a247 83 */
947308c4 84extern int lttng_session_daemon_alive(void);
f3ed775e 85
7d29a247 86/*
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87 * Set the tracing group for the *current* flow of execution.
88 *
06662f07 89 * On success, returns 0 else a negative LTTng error code.
7d29a247 90 */
b7384347 91extern int lttng_set_tracing_group(const char *name);
f3ed775e 92
d9800920 93/*
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94 * This call registers an "outside consumer" for a session and an lttng domain.
95 * No consumer will be spawned and all fds/commands will go through the socket
96 * path given (socket_path).
d9800920 97 *
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98 * NOTE that this is not recommended unless you absolutely know what you are
99 * doing.
100 *
101 * Return 0 on success else a negative LTTng error code.
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102 */
103extern int lttng_register_consumer(struct lttng_handle *handle,
104 const char *socket_path);
105
7d29a247 106/*
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107 * Start tracing for *all* domain(s) in the session.
108 *
109 * Return 0 on success else a negative LTTng error code.
7d29a247 110 */
6a4f824d 111extern int lttng_start_tracing(const char *session_name);
f3ed775e 112
7d29a247 113/*
06662f07 114 * Stop tracing for *all* domain(s) in the session.
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115 *
116 * This call will wait for data availability for each domain of the session so
117 * this can take an abritrary amount of time. However, when returning you have
06662f07 118 * the guarantee that the data is ready to be read and analyze. Use the
38ee087f 119 * _no_wait call below to avoid this behavior.
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120 *
121 * The session_name can't be NULL.
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122 *
123 * Return 0 on success else a negative LTTng error code.
7d29a247 124 */
6a4f824d 125extern int lttng_stop_tracing(const char *session_name);
f3ed775e 126
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127/*
128 * Behave exactly like lttng_stop_tracing but does not wait for data
129 * availability.
130 */
131extern int lttng_stop_tracing_no_wait(const char *session_name);
132
d0254c7c 133/*
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134 * Deprecated: As of LTTng 2.9, this function always returns
135 * -LTTNG_ERR_UND.
d0254c7c 136 */
cd80958d 137extern int lttng_calibrate(struct lttng_handle *handle,
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138 struct lttng_calibrate *calibrate);
139
00e2e675 140/*
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141 * Set URL for a consumer for a session and domain.
142 *
143 * Both data and control URL must be defined. If both URLs are the same, only
144 * the control URL is used even for network streaming.
00e2e675 145 *
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146 * Default port are 5342 and 5343 respectively for control and data which uses
147 * the TCP protocol.
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148 *
149 * URL format: proto://[HOST|IP][:PORT1[:PORT2]][/TRACE_PATH]
150 *
151 * Possible protocols are:
152 * > file://...
153 * Local filesystem full path.
154 *
155 * > net[6]://...
156 * This will use the default network transport layer which is TCP for both
157 * control (PORT1) and data port (PORT2).
158 *
159 * > tcp[6]://...
160 * TCP only streaming. For this one, both data and control URL must be given.
161 *
162 * Return 0 on success else a negative LTTng error code.
00e2e675 163 */
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164extern int lttng_set_consumer_url(struct lttng_handle *handle,
165 const char *control_url, const char *data_url);
00e2e675 166
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167/*
168 * For a given session name, this call checks if the data is ready to be read
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169 * or is still being extracted by the consumer(s) (pending) hence not ready to
170 * be used by any readers.
806e2684 171 *
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172 * Return 0 if there is _no_ data pending in the buffers thus having a
173 * guarantee that the data can be read safely. Else, return 1 if there is still
174 * traced data is pending. On error, a negative value is returned and readable
175 * by lttng_strerror().
806e2684 176 */
6d805429 177extern int lttng_data_pending(const char *session_name);
806e2684 178
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179/*
180 * Deprecated, replaced by lttng_regenerate_metadata.
181 */
182LTTNG_DEPRECATED()
183extern int lttng_metadata_regenerate(const char *session_name);
184
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185/*
186 * Trigger the regeneration of the metadata for a session.
187 * The new metadata overwrite the previous one locally or remotely (through
188 * the lttng-relayd). Only kernel, per-uid and non-live sessions are supported.
189 * Return 0 on success, a negative LTTng error code on error.
190 */
eded6438 191extern int lttng_regenerate_metadata(const char *session_name);
93ec662e 192
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193/*
194 * Trigger the regeneration of the statedump for a session. The new statedump
195 * information is appended to the currently active trace, the session needs to
196 * be active.
197 *
198 * Return 0 on success, a negative LTTng error code on error.
199 */
200extern int lttng_regenerate_statedump(const char *session_name);
201
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202#ifdef __cplusplus
203}
204#endif
205
73db5be4 206#endif /* LTTNG_H */
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