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 it
   6  * under the terms of the GNU General Public License as published by the Free
   7  * Software Foundation; only version 2 of the License.
   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 with
  15  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  16  * Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #ifndef _DEFAULTS_H
  20 #define _DEFAULTS_H
  21
  22 /* Default size of a hash table */
  23 #define DEFAULT_HT_SIZE                         4
  24
  25 /* Default session daemon paths */
  26 #define DEFAULT_HOME_DIR                                                "/tmp"
  27 #define DEFAULT_UST_SOCK_DIR                    DEFAULT_HOME_DIR "/ust-app-socks"
  28 #define DEFAULT_GLOBAL_APPS_PIPE                DEFAULT_UST_SOCK_DIR "/global"
  29 #define DEFAULT_TRACE_OUTPUT                    DEFAULT_HOME_DIR "/lttng"
  30
  31 #define DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH       "/lttng-ust-apps-wait"
  32 #define DEFAULT_HOME_APPS_WAIT_SHM_PATH         "/lttng-ust-apps-wait-%u"
  33
  34 /* Default consumer paths */
  35 #define DEFAULT_CONSUMERD_RUNDIR                "%s"
  36
  37 /* Kernel consumer path */
  38 #define DEFAULT_KCONSUMERD_PATH                 DEFAULT_CONSUMERD_RUNDIR "/kconsumerd"
  39 #define DEFAULT_KCONSUMERD_CMD_SOCK_PATH        DEFAULT_KCONSUMERD_PATH "/command"
  40 #define DEFAULT_KCONSUMERD_ERR_SOCK_PATH        DEFAULT_KCONSUMERD_PATH "/error"
  41
  42 /* UST 64-bit consumer path */
  43 #define DEFAULT_USTCONSUMERD64_PATH             DEFAULT_CONSUMERD_RUNDIR "/ustconsumerd64"
  44 #define DEFAULT_USTCONSUMERD64_CMD_SOCK_PATH    DEFAULT_USTCONSUMERD64_PATH "/command"
  45 #define DEFAULT_USTCONSUMERD64_ERR_SOCK_PATH    DEFAULT_USTCONSUMERD64_PATH "/error"
  46
  47 /* UST 32-bit consumer path */
  48 #define DEFAULT_USTCONSUMERD32_PATH             DEFAULT_CONSUMERD_RUNDIR "/ustconsumerd32"
  49 #define DEFAULT_USTCONSUMERD32_CMD_SOCK_PATH    DEFAULT_USTCONSUMERD32_PATH "/command"
  50 #define DEFAULT_USTCONSUMERD32_ERR_SOCK_PATH    DEFAULT_USTCONSUMERD32_PATH "/error"
  51
  52
  53 /* Default lttng run directory */
  54 #define DEFAULT_LTTNG_RUNDIR                    "/var/run/lttng"
  55 #define DEFAULT_LTTNG_HOME_RUNDIR               "%s/.lttng"
  56
  57 /* Default unix socket path */
  58 #define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK         DEFAULT_LTTNG_RUNDIR "/client-lttng-sessiond"
  59 #define DEFAULT_GLOBAL_APPS_UNIX_SOCK           DEFAULT_LTTNG_RUNDIR "/apps-lttng-sessiond"
  60 #define DEFAULT_HOME_APPS_UNIX_SOCK             DEFAULT_LTTNG_HOME_RUNDIR "/apps-lttng-sessiond"
  61 #define DEFAULT_HOME_CLIENT_UNIX_SOCK           DEFAULT_LTTNG_HOME_RUNDIR "/client-lttng-sessiond"
  62
  63 /*
  64  * Value taken from the hard limit allowed by the kernel when using setrlimit
  65  * with RLIMIT_NOFILE on an Intel i7 CPU and Linux 3.0.3.
  66  */
  67 #define DEFAULT_POLL_SIZE 65535
  68
  69 /* Default channel attributes */
  70 #define DEFAULT_CHANNEL_NAME            "channel0"
  71 #define DEFAULT_CHANNEL_OVERWRITE       0       /* usec */
  72 /* DEFAULT_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
  73 #define DEFAULT_CHANNEL_SUBBUF_SIZE     4096    /* bytes */
  74 /* DEFAULT_CHANNEL_SUBBUF_NUM must always be a power of 2 */
  75 #define DEFAULT_CHANNEL_SUBBUF_NUM      8
  76 #define DEFAULT_CHANNEL_SWITCH_TIMER    0       /* usec */
  77 #define DEFAULT_CHANNEL_READ_TIMER              200     /* usec */
  78 #define DEFAULT_CHANNEL_OUTPUT          LTTNG_EVENT_MMAP
  79
  80 #define DEFAULT_METADATA_SUBBUF_SIZE    4096
  81 #define DEFAULT_METADATA_SUBBUF_NUM     2
  82
  83 /* Kernel has different defaults */
  84
  85 /* DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
  86 #define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE  262144    /* bytes */
  87 /* DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2 */
  88 #define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM   4
  89 /* See lttng-kernel.h enum lttng_kernel_output for channel output */
  90 #define DEFAULT_KERNEL_CHANNEL_OUTPUT       LTTNG_EVENT_SPLICE
  91
  92 /* User space defaults */
  93
  94 /* Must be a power of 2 */
  95 #define DEFAULT_UST_CHANNEL_SUBBUF_SIZE     4096    /* bytes */
  96 /* Must be a power of 2 */
  97 #define DEFAULT_UST_CHANNEL_SUBBUF_NUM      4
  98 /* See lttng-ust.h enum lttng_ust_output */
  99 #define DEFAULT_UST_CHANNEL_OUTPUT          LTTNG_EVENT_MMAP
 100
 101 /*
 102  * Default timeout value for the sem_timedwait() call. Blocking forever is not
 103  * wanted so a timeout is used to control the data flow and not freeze the
 104  * session daemon.
 105  */
 106 #define DEFAULT_SEM_WAIT_TIMEOUT            30    /* in seconds */
 107
 108 #endif /* _DEFAULTS_H */