Add libconfig implementation and tests
[lttng-tools.git] / src / common / defaults.h
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9bda164d 1/*
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2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9bda164d 4 *
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5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License, version 2 only,
7 * as published by the Free Software Foundation.
9bda164d 8 *
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9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
d14d33bf 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
e848fc76 12 * more details.
9bda164d 13 *
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14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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17 */
18
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19#ifndef _DEFAULTS_H
20#define _DEFAULTS_H
e848fc76 21
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22#include <config.h>
23
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24/* Default unix group name for tracing. */
25#define DEFAULT_TRACING_GROUP "tracing"
26
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27/*
28 * This value is defined in the CTF specification (see
29 * git://git.efficios.com/ctf.git in the file
30 * common-trace-format-specification.txt.
31 */
32#define DEFAULT_METADATA_NAME "metadata"
33
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34/* Environment variable to set session daemon binary path. */
35#define DEFAULT_SESSIOND_PATH_ENV "LTTNG_SESSIOND_PATH"
36
37/* Default trace output directory name */
38#define DEFAULT_TRACE_DIR_NAME "lttng-traces"
39
f6a9efaa 40/* Default size of a hash table */
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41#define DEFAULT_HT_SIZE 4
42
43/* Default session daemon paths */
44#define DEFAULT_HOME_DIR "/tmp"
45#define DEFAULT_UST_SOCK_DIR DEFAULT_HOME_DIR "/ust-app-socks"
46#define DEFAULT_GLOBAL_APPS_PIPE DEFAULT_UST_SOCK_DIR "/global"
47#define DEFAULT_TRACE_OUTPUT DEFAULT_HOME_DIR "/lttng"
48
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49/* Default directory where the trace are written in per domain */
50#define DEFAULT_KERNEL_TRACE_DIR "/kernel"
51#define DEFAULT_UST_TRACE_DIR "/ust"
52
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53/* Subpath for per PID or UID sessions. */
54#define DEFAULT_UST_TRACE_PID_PATH "/pid"
55#define DEFAULT_UST_TRACE_UID_PATH "/uid/%d/%u-bit"
56
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57/*
58 * Default session name for the lttng command line. This default value will
59 * get the date and time appended (%Y%m%d-%H%M%S) to it.
60 */
07424f16 61#define DEFAULT_SESSION_NAME "auto"
a4b92340 62
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63/* Default consumer paths */
64#define DEFAULT_CONSUMERD_RUNDIR "%s"
65
66/* Kernel consumer path */
67#define DEFAULT_KCONSUMERD_PATH DEFAULT_CONSUMERD_RUNDIR "/kconsumerd"
68#define DEFAULT_KCONSUMERD_CMD_SOCK_PATH DEFAULT_KCONSUMERD_PATH "/command"
69#define DEFAULT_KCONSUMERD_ERR_SOCK_PATH DEFAULT_KCONSUMERD_PATH "/error"
70
71/* UST 64-bit consumer path */
72#define DEFAULT_USTCONSUMERD64_PATH DEFAULT_CONSUMERD_RUNDIR "/ustconsumerd64"
73#define DEFAULT_USTCONSUMERD64_CMD_SOCK_PATH DEFAULT_USTCONSUMERD64_PATH "/command"
74#define DEFAULT_USTCONSUMERD64_ERR_SOCK_PATH DEFAULT_USTCONSUMERD64_PATH "/error"
75
76/* UST 32-bit consumer path */
77#define DEFAULT_USTCONSUMERD32_PATH DEFAULT_CONSUMERD_RUNDIR "/ustconsumerd32"
78#define DEFAULT_USTCONSUMERD32_CMD_SOCK_PATH DEFAULT_USTCONSUMERD32_PATH "/command"
79#define DEFAULT_USTCONSUMERD32_ERR_SOCK_PATH DEFAULT_USTCONSUMERD32_PATH "/error"
80
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81/* Relayd path */
82#define DEFAULT_RELAYD_RUNDIR "%s"
83#define DEFAULT_RELAYD_PATH DEFAULT_RELAYD_RUNDIR "/relayd"
84
990570ed 85/* Default lttng run directory */
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86#define DEFAULT_LTTNG_HOME_ENV_VAR "LTTNG_HOME"
87#define DEFAULT_LTTNG_FALLBACK_HOME_ENV_VAR "HOME"
d386c872 88#define DEFAULT_LTTNG_RUNDIR CONFIG_LTTNG_SYSTEM_RUNDIR
60922cb0 89#define DEFAULT_LTTNG_HOME_RUNDIR "%s/.lttng"
35f90c40 90#define DEFAULT_LTTNG_SESSIOND_PIDFILE "lttng-sessiond.pid"
cd9290dd 91#define DEFAULT_LTTNG_SESSIOND_JULPORT_FILE "jul.port"
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92
93/* Default unix socket path */
60922cb0 94#define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/client-lttng-sessiond"
60922cb0 95#define DEFAULT_HOME_CLIENT_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/client-lttng-sessiond"
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96#define DEFAULT_GLOBAL_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/sessiond-health"
97#define DEFAULT_HOME_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/sessiond-health"
990570ed 98
5c635c72 99/* Default consumer health unix socket path */
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100#define DEFAULT_GLOBAL_USTCONSUMER32_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/ustconsumerd32/health"
101#define DEFAULT_HOME_USTCONSUMER32_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/ustconsumerd32/health"
102#define DEFAULT_GLOBAL_USTCONSUMER64_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/ustconsumerd64/health"
103#define DEFAULT_HOME_USTCONSUMER64_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/ustconsumerd64/health"
104#define DEFAULT_GLOBAL_KCONSUMER_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/kconsumerd/health"
105#define DEFAULT_HOME_KCONSUMER_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/kconsumerd/health"
5c635c72 106
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107/* Default relay health unix socket path */
108#define DEFAULT_GLOBAL_RELAY_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/relayd/health-%d"
109#define DEFAULT_HOME_RELAY_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/relayd/health-%d"
110
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111/* Default daemon configuration file path */
112#define DEFAULT_DAEMON_CONFIG_FILE "lttng.conf"
113#define DEFAULT_DAEMON_HOME_CONFIGPATH DEFAULT_LTTNG_HOME_RUNDIR "/" \
114 DEFAULT_DAEMON_CONFIG_FILE
115#define DEFAULT_DAEMON_SYSTEM_CONFIGPATH CONFIG_LTTNG_SYSTEM_CONFIGDIR \
116 "/lttng/" DEFAULT_DAEMON_CONFIG_FILE
117
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118#define DEFAULT_GLOBAL_APPS_UNIX_SOCK \
119 DEFAULT_LTTNG_RUNDIR "/" LTTNG_UST_SOCK_FILENAME
120#define DEFAULT_HOME_APPS_UNIX_SOCK \
121 DEFAULT_LTTNG_HOME_RUNDIR "/" LTTNG_UST_SOCK_FILENAME
122#define DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH \
123 "/" LTTNG_UST_WAIT_FILENAME
124#define DEFAULT_HOME_APPS_WAIT_SHM_PATH \
125 DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH "-%d"
126
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127/*
128 * Value taken from the hard limit allowed by the kernel when using setrlimit
129 * with RLIMIT_NOFILE on an Intel i7 CPU and Linux 3.0.3.
130 */
131#define DEFAULT_POLL_SIZE 65535
132
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133/*
134 * Format is %s_%d respectively channel name and CPU number. Eigth bytes
135 * are added here to add space for the CPU number. I guess 2^8 CPUs is more
136 * than enough. We might end up with quantum computing in a cell phone when
137 * reaching this limit.
138 */
139#define DEFAULT_STREAM_NAME_LEN LTTNG_SYMBOL_NAME_LEN + 8
140
f3ed775e 141/* Default channel attributes */
3817e7df 142#define DEFAULT_CHANNEL_NAME "channel0"
0475c50c 143/* Default JUL domain channel name. */
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144#define DEFAULT_JUL_CHANNEL_NAME "lttng_jul_channel"
145/* Default JUL tracepoint name. This is a wildcard for the JUL domain. */
146#define DEFAULT_JUL_EVENT_NAME "lttng_jul*"
0475c50c 147/* JUL default channel name. */
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148#define DEFAULT_CHANNEL_OVERWRITE 0
149#define DEFAULT_CHANNEL_TRACEFILE_SIZE 0
150#define DEFAULT_CHANNEL_TRACEFILE_COUNT 0
151
152/* Must always be a power of 2 */
153#define _DEFAULT_CHANNEL_SUBBUF_SIZE 4096 /* bytes */
154/* Must always be a power of 2 */
155#define _DEFAULT_CHANNEL_SUBBUF_NUM 4
156#define _DEFAULT_CHANNEL_SWITCH_TIMER 0 /* usec */
ecc48a90 157#define _DEFAULT_CHANNEL_LIVE_TIMER 0 /* usec */
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158#define _DEFAULT_CHANNEL_READ_TIMER 200000 /* usec */
159#define _DEFAULT_CHANNEL_OUTPUT LTTNG_EVENT_MMAP
160
161/* Metadata channel defaults. */
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162#define DEFAULT_METADATA_SUBBUF_SIZE 4096
163#define DEFAULT_METADATA_SUBBUF_NUM 2
331744e3 164#define DEFAULT_METADATA_CACHE_SIZE 4096
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165#define DEFAULT_METADATA_SWITCH_TIMER _DEFAULT_CHANNEL_SWITCH_TIMER
166#define DEFAULT_METADATA_READ_TIMER 0
167#define DEFAULT_METADATA_OUTPUT _DEFAULT_CHANNEL_OUTPUT
e6ddca71 168
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169/* Kernel has different defaults */
170
171/* DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
0a9c6494 172#define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE 262144 /* bytes */
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173/*
174 * DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2.
175 * Update help manually if override.
176 */
0a9c6494 177#define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM _DEFAULT_CHANNEL_SUBBUF_NUM
b389abbe 178/* See lttng-kernel.h enum lttng_kernel_output for channel output */
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179#define DEFAULT_KERNEL_CHANNEL_OUTPUT LTTNG_EVENT_SPLICE
180#define DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER _DEFAULT_CHANNEL_SWITCH_TIMER
181#define DEFAULT_KERNEL_CHANNEL_READ_TIMER _DEFAULT_CHANNEL_READ_TIMER
ecc48a90 182#define DEFAULT_KERNEL_CHANNEL_LIVE_TIMER _DEFAULT_CHANNEL_LIVE_TIMER
6bb9e85f 183
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184/* User space defaults */
185
186/* Must be a power of 2 */
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187#define DEFAULT_UST_PID_CHANNEL_SUBBUF_SIZE _DEFAULT_CHANNEL_SUBBUF_SIZE
188#define DEFAULT_UST_UID_CHANNEL_SUBBUF_SIZE 131072 /* bytes */
9f778c9a 189/* Must be a power of 2. Update help manuall if override. */
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190#define DEFAULT_UST_PID_CHANNEL_SUBBUF_NUM _DEFAULT_CHANNEL_SUBBUF_NUM
191#define DEFAULT_UST_UID_CHANNEL_SUBBUF_NUM _DEFAULT_CHANNEL_SUBBUF_NUM
28ca4a8b 192/* See lttng-ust.h enum lttng_ust_output */
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193#define DEFAULT_UST_PID_CHANNEL_OUTPUT _DEFAULT_CHANNEL_OUTPUT
194#define DEFAULT_UST_UID_CHANNEL_OUTPUT _DEFAULT_CHANNEL_OUTPUT
195/* Timers in usec. */
196#define DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER _DEFAULT_CHANNEL_SWITCH_TIMER
197#define DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER _DEFAULT_CHANNEL_SWITCH_TIMER
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198#define DEFAULT_UST_PID_CHANNEL_LIVE_TIMER _DEFAULT_CHANNEL_LIVE_TIMER
199#define DEFAULT_UST_UID_CHANNEL_LIVE_TIMER _DEFAULT_CHANNEL_LIVE_TIMER
0b0dd29a 200
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201#define DEFAULT_UST_PID_CHANNEL_READ_TIMER 0 /* usec */
202#define DEFAULT_UST_UID_CHANNEL_READ_TIMER 0 /* usec */
6bb9e85f 203
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204/*
205 * Default timeout value for the sem_timedwait() call. Blocking forever is not
206 * wanted so a timeout is used to control the data flow and not freeze the
207 * session daemon.
208 */
209#define DEFAULT_SEM_WAIT_TIMEOUT 30 /* in seconds */
210
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211/* Default network ports for trace streaming support */
212#define DEFAULT_NETWORK_CONTROL_PORT 5342
213#define DEFAULT_NETWORK_DATA_PORT 5343
d3e2ba59 214#define DEFAULT_NETWORK_VIEWER_PORT 5344
3a5713da 215
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216/* JUL registration TCP port. */
217#define DEFAULT_JUL_TCP_PORT 5345
218
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219/*
220 * If a thread stalls for this amount of time, it will be considered bogus (bad
221 * health).
222 */
223#define DEFAULT_HEALTH_CHECK_DELTA_S 20
224#define DEFAULT_HEALTH_CHECK_DELTA_NS 0
225
38ee087f 226/*
6d805429 227 * Wait period before retrying the lttng_data_pending command in the lttng
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228 * stop command of liblttng-ctl.
229 */
230#define DEFAULT_DATA_AVAILABILITY_WAIT_TIME 200000 /* usec */
231
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232/*
233 * Wait period before retrying the lttng_consumer_flushed_cache when
234 * the consumer receives metadata.
235 */
236#define DEFAULT_METADATA_AVAILABILITY_WAIT_TIME 200000 /* usec */
237
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238/*
239 * The usual value for the maximum TCP SYN retries time and TCP FIN timeout is
240 * 180 and 60 seconds on most Linux system and the default value since kernel
241 * 2.2 thus using the highest value. See tcp(7) for more details.
242 */
243#define DEFAULT_INET_TCP_TIMEOUT 180 /* sec */
244
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245/*
246 * Default receiving and sending timeout for an application socket.
247 */
248#define DEFAULT_APP_SOCKET_RW_TIMEOUT 5 /* sec */
249#define DEFAULT_APP_SOCKET_TIMEOUT_ENV "LTTNG_APP_SOCKET_TIMEOUT"
250
ffe60014 251#define DEFAULT_UST_STREAM_FD_NUM 2 /* Number of fd per UST stream. */
8b3bd7a3 252
da3c9ec1 253#define DEFAULT_SNAPSHOT_NAME "snapshot"
27babd3a 254#define DEFAULT_SNAPSHOT_MAX_SIZE 0 /* Unlimited. */
da3c9ec1 255
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256/* Suffix of an index file. */
257#define DEFAULT_INDEX_FILE_SUFFIX ".idx"
1c20f0e2 258#define DEFAULT_INDEX_DIR "index"
309167d2 259
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260extern size_t default_channel_subbuf_size;
261extern size_t default_metadata_subbuf_size;
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262extern size_t default_ust_pid_channel_subbuf_size;
263extern size_t default_ust_uid_channel_subbuf_size;
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264extern size_t default_kernel_channel_subbuf_size;
265
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266/*
267 * Returns the default subbuf size.
268 *
269 * This function depends on a value that is set at constructor time, so it is
270 * unsafe to call it from another constructor.
271 */
272static inline
273size_t default_get_channel_subbuf_size(void)
274{
275 return default_channel_subbuf_size;
276}
277
278/*
279 * Returns the default metadata subbuf size.
280 *
281 * This function depends on a value that is set at constructor time, so it is
282 * unsafe to call it from another constructor.
283 */
284static inline
285size_t default_get_metadata_subbuf_size(void)
286{
287 return default_metadata_subbuf_size;
288}
289
290/*
291 * Returns the default subbuf size for the kernel domain.
292 *
293 * This function depends on a value that is set at constructor time, so it is
294 * unsafe to call it from another constructor.
295 */
296static inline
297size_t default_get_kernel_channel_subbuf_size(void)
298{
299 return default_kernel_channel_subbuf_size;
300}
301
302/*
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303 * Returns the default subbuf size for the UST domain per PID.
304 *
305 * This function depends on a value that is set at constructor time, so it is
306 * unsafe to call it from another constructor.
307 */
308static inline
309size_t default_get_ust_pid_channel_subbuf_size(void)
310{
311 return default_ust_pid_channel_subbuf_size;
312}
313
314/*
315 * Returns the default subbuf size for the UST domain per UID.
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316 *
317 * This function depends on a value that is set at constructor time, so it is
318 * unsafe to call it from another constructor.
319 */
320static inline
0a9c6494 321size_t default_get_ust_uid_channel_subbuf_size(void)
8b3bd7a3 322{
0a9c6494 323 return default_ust_uid_channel_subbuf_size;
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324}
325
990570ed 326#endif /* _DEFAULTS_H */
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