src/common/defaults.h

   1 /*
   2  * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
   3  *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   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.
   8  *
   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
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  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.
  17  */
  18
  19 #ifndef _DEFAULTS_H
  20 #define _DEFAULTS_H
  21
  22 #include <config.h>
  23
  24 /* Default unix group name for tracing. */
  25 #define DEFAULT_TRACING_GROUP                   "tracing"
  26
  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
  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
  40 /* Default size of a hash table */
  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
  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
  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
  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  */
  61 #define DEFAULT_SESSION_NAME                    "auto"
  62
  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
  81 /* Relayd path */
  82 #define DEFAULT_RELAYD_RUNDIR                   "%s"
  83 #define DEFAULT_RELAYD_PATH                     DEFAULT_RELAYD_RUNDIR "/relayd"
  84
  85 /* Default lttng run directory */
  86 #define DEFAULT_LTTNG_HOME_ENV_VAR              "LTTNG_HOME"
  87 #define DEFAULT_LTTNG_FALLBACK_HOME_ENV_VAR     "HOME"
  88 #define DEFAULT_LTTNG_RUNDIR                    CONFIG_LTTNG_SYSTEM_RUNDIR
  89 #define DEFAULT_LTTNG_HOME_RUNDIR               "%s/.lttng"
  90 #define DEFAULT_LTTNG_SESSIOND_PIDFILE          "lttng-sessiond.pid"
  91 #define DEFAULT_LTTNG_SESSIOND_JULPORT_FILE     "jul.port"
  92
  93 /* Default unix socket path */
  94 #define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK         DEFAULT_LTTNG_RUNDIR "/client-lttng-sessiond"
  95 #define DEFAULT_HOME_CLIENT_UNIX_SOCK           DEFAULT_LTTNG_HOME_RUNDIR "/client-lttng-sessiond"
  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"
  98
  99 /* Default consumer health unix socket path */
 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"
 106
 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
 111 #define DEFAULT_GLOBAL_APPS_UNIX_SOCK \
 112         DEFAULT_LTTNG_RUNDIR "/" LTTNG_UST_SOCK_FILENAME
 113 #define DEFAULT_HOME_APPS_UNIX_SOCK \
 114         DEFAULT_LTTNG_HOME_RUNDIR "/" LTTNG_UST_SOCK_FILENAME
 115 #define DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH \
 116         "/" LTTNG_UST_WAIT_FILENAME
 117 #define DEFAULT_HOME_APPS_WAIT_SHM_PATH \
 118         DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH "-%d"
 119
 120 /*
 121  * Value taken from the hard limit allowed by the kernel when using setrlimit
 122  * with RLIMIT_NOFILE on an Intel i7 CPU and Linux 3.0.3.
 123  */
 124 #define DEFAULT_POLL_SIZE 65535
 125
 126 /*
 127  * Format is %s_%d respectively channel name and CPU number. Eigth bytes
 128  * are added here to add space for the CPU number. I guess 2^8 CPUs is more
 129  * than enough. We might end up with quantum computing in a cell phone when
 130  * reaching this limit.
 131  */
 132 #define DEFAULT_STREAM_NAME_LEN        LTTNG_SYMBOL_NAME_LEN + 8
 133
 134 /* Default channel attributes */
 135 #define DEFAULT_CHANNEL_NAME            "channel0"
 136 /* Default JUL domain channel name. */
 137 #define DEFAULT_JUL_CHANNEL_NAME        "lttng_jul_channel"
 138 /* Default JUL tracepoint name. This is a wildcard for the JUL domain. */
 139 #define DEFAULT_JUL_EVENT_NAME          "lttng_jul*"
 140 /* JUL default channel name. */
 141 #define DEFAULT_CHANNEL_OVERWRITE       0
 142 #define DEFAULT_CHANNEL_TRACEFILE_SIZE  0
 143 #define DEFAULT_CHANNEL_TRACEFILE_COUNT 0
 144
 145 /* Must always be a power of 2 */
 146 #define _DEFAULT_CHANNEL_SUBBUF_SIZE    4096    /* bytes */
 147 /* Must always be a power of 2 */
 148 #define _DEFAULT_CHANNEL_SUBBUF_NUM             4
 149 #define _DEFAULT_CHANNEL_SWITCH_TIMER   0       /* usec */
 150 #define _DEFAULT_CHANNEL_LIVE_TIMER     0       /* usec */
 151 #define _DEFAULT_CHANNEL_READ_TIMER             200000  /* usec */
 152 #define _DEFAULT_CHANNEL_OUTPUT                 LTTNG_EVENT_MMAP
 153
 154 /* Metadata channel defaults. */
 155 #define DEFAULT_METADATA_SUBBUF_SIZE    4096
 156 #define DEFAULT_METADATA_SUBBUF_NUM     2
 157 #define DEFAULT_METADATA_CACHE_SIZE     4096
 158 #define DEFAULT_METADATA_SWITCH_TIMER   _DEFAULT_CHANNEL_SWITCH_TIMER
 159 #define DEFAULT_METADATA_READ_TIMER             0
 160 #define DEFAULT_METADATA_OUTPUT                 _DEFAULT_CHANNEL_OUTPUT
 161
 162 /* Kernel has different defaults */
 163
 164 /* DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
 165 #define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE              262144    /* bytes */
 166 /*
 167  * DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2.
 168  * Update help manually if override.
 169  */
 170 #define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM               _DEFAULT_CHANNEL_SUBBUF_NUM
 171 /* See lttng-kernel.h enum lttng_kernel_output for channel output */
 172 #define DEFAULT_KERNEL_CHANNEL_OUTPUT                   LTTNG_EVENT_SPLICE
 173 #define DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER             _DEFAULT_CHANNEL_SWITCH_TIMER
 174 #define DEFAULT_KERNEL_CHANNEL_READ_TIMER               _DEFAULT_CHANNEL_READ_TIMER
 175 #define DEFAULT_KERNEL_CHANNEL_LIVE_TIMER               _DEFAULT_CHANNEL_LIVE_TIMER
 176
 177 /* User space defaults */
 178
 179 /* Must be a power of 2 */
 180 #define DEFAULT_UST_PID_CHANNEL_SUBBUF_SIZE             _DEFAULT_CHANNEL_SUBBUF_SIZE
 181 #define DEFAULT_UST_UID_CHANNEL_SUBBUF_SIZE             131072  /* bytes */
 182 /* Must be a power of 2. Update help manuall if override. */
 183 #define DEFAULT_UST_PID_CHANNEL_SUBBUF_NUM              _DEFAULT_CHANNEL_SUBBUF_NUM
 184 #define DEFAULT_UST_UID_CHANNEL_SUBBUF_NUM              _DEFAULT_CHANNEL_SUBBUF_NUM
 185 /* See lttng-ust.h enum lttng_ust_output */
 186 #define DEFAULT_UST_PID_CHANNEL_OUTPUT                  _DEFAULT_CHANNEL_OUTPUT
 187 #define DEFAULT_UST_UID_CHANNEL_OUTPUT                  _DEFAULT_CHANNEL_OUTPUT
 188 /* Timers in usec. */
 189 #define DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER    _DEFAULT_CHANNEL_SWITCH_TIMER
 190 #define DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER    _DEFAULT_CHANNEL_SWITCH_TIMER
 191 #define DEFAULT_UST_PID_CHANNEL_LIVE_TIMER      _DEFAULT_CHANNEL_LIVE_TIMER
 192 #define DEFAULT_UST_UID_CHANNEL_LIVE_TIMER      _DEFAULT_CHANNEL_LIVE_TIMER
 193
 194 #define DEFAULT_UST_PID_CHANNEL_READ_TIMER      0  /* usec */
 195 #define DEFAULT_UST_UID_CHANNEL_READ_TIMER      0  /* usec */
 196
 197 /*
 198  * Default timeout value for the sem_timedwait() call. Blocking forever is not
 199  * wanted so a timeout is used to control the data flow and not freeze the
 200  * session daemon.
 201  */
 202 #define DEFAULT_SEM_WAIT_TIMEOUT            30    /* in seconds */
 203
 204 /* Default network ports for trace streaming support */
 205 #define DEFAULT_NETWORK_CONTROL_PORT        5342
 206 #define DEFAULT_NETWORK_DATA_PORT           5343
 207 #define DEFAULT_NETWORK_VIEWER_PORT         5344
 208
 209 /* JUL registration TCP port. */
 210 #define DEFAULT_JUL_TCP_PORT                5345
 211
 212 /*
 213  * If a thread stalls for this amount of time, it will be considered bogus (bad
 214  * health).
 215  */
 216 #define DEFAULT_HEALTH_CHECK_DELTA_S        20
 217 #define DEFAULT_HEALTH_CHECK_DELTA_NS       0
 218
 219 /*
 220  * Wait period before retrying the lttng_data_pending command in the lttng
 221  * stop command of liblttng-ctl.
 222  */
 223 #define DEFAULT_DATA_AVAILABILITY_WAIT_TIME 200000  /* usec */
 224
 225 /*
 226  * Wait period before retrying the lttng_consumer_flushed_cache when
 227  * the consumer receives metadata.
 228  */
 229 #define DEFAULT_METADATA_AVAILABILITY_WAIT_TIME 200000  /* usec */
 230
 231 /*
 232  * The usual value for the maximum TCP SYN retries time and TCP FIN timeout is
 233  * 180 and 60 seconds on most Linux system and the default value since kernel
 234  * 2.2 thus using the highest value. See tcp(7) for more details.
 235  */
 236 #define DEFAULT_INET_TCP_TIMEOUT                        180     /* sec */
 237
 238 /*
 239  * Default receiving and sending timeout for an application socket.
 240  */
 241 #define DEFAULT_APP_SOCKET_RW_TIMEOUT       5  /* sec */
 242 #define DEFAULT_APP_SOCKET_TIMEOUT_ENV      "LTTNG_APP_SOCKET_TIMEOUT"
 243
 244 #define DEFAULT_UST_STREAM_FD_NUM                       2 /* Number of fd per UST stream. */
 245
 246 #define DEFAULT_SNAPSHOT_NAME                           "snapshot"
 247 #define DEFAULT_SNAPSHOT_MAX_SIZE                       0 /* Unlimited. */
 248
 249 /* Suffix of an index file. */
 250 #define DEFAULT_INDEX_FILE_SUFFIX                       ".idx"
 251 #define DEFAULT_INDEX_DIR                                       "index"
 252
 253 extern size_t default_channel_subbuf_size;
 254 extern size_t default_metadata_subbuf_size;
 255 extern size_t default_ust_pid_channel_subbuf_size;
 256 extern size_t default_ust_uid_channel_subbuf_size;
 257 extern size_t default_kernel_channel_subbuf_size;
 258
 259 /*
 260  * Returns the default subbuf size.
 261  *
 262  * This function depends on a value that is set at constructor time, so it is
 263  * unsafe to call it from another constructor.
 264  */
 265 static inline
 266 size_t default_get_channel_subbuf_size(void)
 267 {
 268         return default_channel_subbuf_size;
 269 }
 270
 271 /*
 272  * Returns the default metadata subbuf size.
 273  *
 274  * This function depends on a value that is set at constructor time, so it is
 275  * unsafe to call it from another constructor.
 276  */
 277 static inline
 278 size_t default_get_metadata_subbuf_size(void)
 279 {
 280         return default_metadata_subbuf_size;
 281 }
 282
 283 /*
 284  * Returns the default subbuf size for the kernel domain.
 285  *
 286  * This function depends on a value that is set at constructor time, so it is
 287  * unsafe to call it from another constructor.
 288  */
 289 static inline
 290 size_t default_get_kernel_channel_subbuf_size(void)
 291 {
 292         return default_kernel_channel_subbuf_size;
 293 }
 294
 295 /*
 296  * Returns the default subbuf size for the UST domain per PID.
 297  *
 298  * This function depends on a value that is set at constructor time, so it is
 299  * unsafe to call it from another constructor.
 300  */
 301 static inline
 302 size_t default_get_ust_pid_channel_subbuf_size(void)
 303 {
 304         return default_ust_pid_channel_subbuf_size;
 305 }
 306
 307 /*
 308  * Returns the default subbuf size for the UST domain per UID.
 309  *
 310  * This function depends on a value that is set at constructor time, so it is
 311  * unsafe to call it from another constructor.
 312  */
 313 static inline
 314 size_t default_get_ust_uid_channel_subbuf_size(void)
 315 {
 316         return default_ust_uid_channel_subbuf_size;
 317 }
 318
 319 #endif /* _DEFAULTS_H */