/*
* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
* Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * 2015 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; only version 2 of the License.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2 only,
+ * as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _DEFAULTS_H
#define _DEFAULTS_H
+#include <pthread.h>
+#include <src/common/macros.h>
+
+/* Default unix group name for tracing. */
+#define DEFAULT_TRACING_GROUP "tracing"
+
+/*
+ * This value is defined in the CTF specification (see
+ * git://git.efficios.com/ctf.git in the file
+ * common-trace-format-specification.txt.
+ */
+#define DEFAULT_METADATA_NAME "metadata"
+
+/* Environment variable to set session daemon binary path. */
+#define DEFAULT_SESSIOND_PATH_ENV "LTTNG_SESSIOND_PATH"
+
+/* Environment variable to set man pager binary path. */
+#define DEFAULT_MAN_BIN_PATH_ENV "LTTNG_MAN_BIN_PATH"
+
+/* Default man pager binary path. */
+#define DEFAULT_MAN_BIN_PATH "/usr/bin/man"
+
+/* Default trace output directory name */
+#define DEFAULT_TRACE_DIR_NAME "lttng-traces"
+
/* Default size of a hash table */
-#define DEFAULT_HT_SIZE 4
+#define DEFAULT_HT_SIZE 4
+
+/* Default session daemon paths */
+#define DEFAULT_HOME_DIR "/tmp"
+#define DEFAULT_UST_SOCK_DIR DEFAULT_HOME_DIR "/ust-app-socks"
+#define DEFAULT_GLOBAL_APPS_PIPE DEFAULT_UST_SOCK_DIR "/global"
+#define DEFAULT_TRACE_OUTPUT DEFAULT_HOME_DIR "/lttng"
+
+/* Default directory where the trace are written in per domain */
+#define DEFAULT_KERNEL_TRACE_DIR "/kernel"
+#define DEFAULT_UST_TRACE_DIR "/ust"
+
+/* Subpath for per PID or UID sessions. */
+#define DEFAULT_UST_TRACE_PID_PATH "/pid"
+#define DEFAULT_UST_TRACE_UID_PATH "/uid/%d/%u-bit"
+
+/*
+ * Default session name for the lttng command line. This default value will
+ * get the date and time appended (%Y%m%d-%H%M%S) to it.
+ */
+#define DEFAULT_SESSION_NAME "auto"
+
+/* Default consumer paths */
+#define DEFAULT_CONSUMERD_RUNDIR "%s"
+
+/* Kernel consumer path */
+#define DEFAULT_KCONSUMERD_PATH DEFAULT_CONSUMERD_RUNDIR "/kconsumerd"
+#define DEFAULT_KCONSUMERD_CMD_SOCK_PATH DEFAULT_KCONSUMERD_PATH "/command"
+#define DEFAULT_KCONSUMERD_ERR_SOCK_PATH DEFAULT_KCONSUMERD_PATH "/error"
+
+/* UST 64-bit consumer path */
+#define DEFAULT_USTCONSUMERD64_PATH DEFAULT_CONSUMERD_RUNDIR "/ustconsumerd64"
+#define DEFAULT_USTCONSUMERD64_CMD_SOCK_PATH DEFAULT_USTCONSUMERD64_PATH "/command"
+#define DEFAULT_USTCONSUMERD64_ERR_SOCK_PATH DEFAULT_USTCONSUMERD64_PATH "/error"
+
+/* UST 32-bit consumer path */
+#define DEFAULT_USTCONSUMERD32_PATH DEFAULT_CONSUMERD_RUNDIR "/ustconsumerd32"
+#define DEFAULT_USTCONSUMERD32_CMD_SOCK_PATH DEFAULT_USTCONSUMERD32_PATH "/command"
+#define DEFAULT_USTCONSUMERD32_ERR_SOCK_PATH DEFAULT_USTCONSUMERD32_PATH "/error"
+
+/* Relayd path */
+#define DEFAULT_RELAYD_RUNDIR "%s"
+#define DEFAULT_RELAYD_PATH DEFAULT_RELAYD_RUNDIR "/relayd"
/* Default lttng run directory */
-#define DEFAULT_LTTNG_RUNDIR "/var/run/lttng"
-#define DEFAULT_LTTNG_HOME_RUNDIR "%s/.lttng"
+#define DEFAULT_LTTNG_HOME_ENV_VAR "LTTNG_HOME"
+#define DEFAULT_LTTNG_FALLBACK_HOME_ENV_VAR "HOME"
+#define DEFAULT_LTTNG_RUNDIR CONFIG_LTTNG_SYSTEM_RUNDIR
+#define DEFAULT_LTTNG_HOME_RUNDIR "%s/.lttng"
+#define DEFAULT_LTTNG_SESSIOND_PIDFILE "lttng-sessiond.pid"
+#define DEFAULT_LTTNG_SESSIOND_AGENTPORT_FILE "agent.port"
+#define DEFAULT_LTTNG_SESSIOND_LOCKFILE "lttng-sessiond.lck"
+
+/* Default probes list */
+#define DEFAULT_LTTNG_KMOD_PROBES "LTTNG_KMOD_PROBES"
+
+/* Default extra probes list */
+#define DEFAULT_LTTNG_EXTRA_KMOD_PROBES "LTTNG_EXTRA_KMOD_PROBES"
/* Default unix socket path */
-#define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/client-lttng-sessiond"
-#define DEFAULT_GLOBAL_APPS_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/apps-lttng-sessiond"
-#define DEFAULT_HOME_APPS_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/apps-lttng-sessiond"
-#define DEFAULT_HOME_CLIENT_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/client-lttng-sessiond"
+#define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/client-lttng-sessiond"
+#define DEFAULT_HOME_CLIENT_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/client-lttng-sessiond"
+#define DEFAULT_GLOBAL_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/sessiond-health"
+#define DEFAULT_HOME_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/sessiond-health"
+
+/* Default consumer health unix socket path */
+#define DEFAULT_GLOBAL_USTCONSUMER32_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/ustconsumerd32/health"
+#define DEFAULT_HOME_USTCONSUMER32_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/ustconsumerd32/health"
+#define DEFAULT_GLOBAL_USTCONSUMER64_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/ustconsumerd64/health"
+#define DEFAULT_HOME_USTCONSUMER64_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/ustconsumerd64/health"
+#define DEFAULT_GLOBAL_KCONSUMER_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/kconsumerd/health"
+#define DEFAULT_HOME_KCONSUMER_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/kconsumerd/health"
+
+/* Default relay health unix socket path */
+#define DEFAULT_GLOBAL_RELAY_HEALTH_UNIX_SOCK DEFAULT_LTTNG_RUNDIR "/relayd/health-%d"
+#define DEFAULT_HOME_RELAY_HEALTH_UNIX_SOCK DEFAULT_LTTNG_HOME_RUNDIR "/relayd/health-%d"
+
+/* Default daemon configuration file path */
+#define DEFAULT_SYSTEM_CONFIGPATH CONFIG_LTTNG_SYSTEM_CONFIGDIR \
+ "/lttng"
+
+#define DEFAULT_DAEMON_CONFIG_FILE "lttng.conf"
+#define DEFAULT_DAEMON_HOME_CONFIGPATH DEFAULT_LTTNG_HOME_RUNDIR "/" \
+ DEFAULT_DAEMON_CONFIG_FILE
+#define DEFAULT_DAEMON_SYSTEM_CONFIGPATH DEFAULT_SYSTEM_CONFIGPATH "/" \
+ DEFAULT_DAEMON_CONFIG_FILE
+
+/* Default session configuration file path */
+#define DEFAULT_SESSION_PATH "sessions"
+/* Auto load session in that directory. */
+#define DEFAULT_SESSION_CONFIG_AUTOLOAD "auto"
+#define DEFAULT_SESSION_HOME_CONFIGPATH DEFAULT_LTTNG_HOME_RUNDIR "/" \
+ DEFAULT_SESSION_PATH
+#define DEFAULT_SESSION_SYSTEM_CONFIGPATH DEFAULT_SYSTEM_CONFIGPATH "/" \
+ DEFAULT_SESSION_PATH
+#define DEFAULT_SESSION_CONFIG_FILE_EXTENSION ".lttng"
+#define DEFAULT_SESSION_CONFIG_XSD_FILENAME "session.xsd"
+#define DEFAULT_SESSION_CONFIG_XSD_PATH CONFIG_LTTNG_SYSTEM_DATADIR "/xml/lttng/"
+#define DEFAULT_SESSION_CONFIG_XSD_PATH_ENV "LTTNG_SESSION_CONFIG_XSD_PATH"
+
+#define DEFAULT_GLOBAL_APPS_UNIX_SOCK \
+ DEFAULT_LTTNG_RUNDIR "/" LTTNG_UST_SOCK_FILENAME
+#define DEFAULT_HOME_APPS_UNIX_SOCK \
+ DEFAULT_LTTNG_HOME_RUNDIR "/" LTTNG_UST_SOCK_FILENAME
+#define DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH \
+ "/" LTTNG_UST_WAIT_FILENAME
+#define DEFAULT_HOME_APPS_WAIT_SHM_PATH \
+ DEFAULT_GLOBAL_APPS_WAIT_SHM_PATH "-%d"
/*
* Value taken from the hard limit allowed by the kernel when using setrlimit
*/
#define DEFAULT_POLL_SIZE 65535
+/*
+ * Format is %s_%d respectively channel name and CPU number. Eigth bytes
+ * are added here to add space for the CPU number. I guess 2^8 CPUs is more
+ * than enough. We might end up with quantum computing in a cell phone when
+ * reaching this limit.
+ */
+#define DEFAULT_STREAM_NAME_LEN LTTNG_SYMBOL_NAME_LEN + 8
+
/* Default channel attributes */
#define DEFAULT_CHANNEL_NAME "channel0"
-#define DEFAULT_CHANNEL_OVERWRITE 0 /* usec */
-/* DEFAULT_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
-#define DEFAULT_CHANNEL_SUBBUF_SIZE 4096 /* bytes */
-/* DEFAULT_CHANNEL_SUBBUF_NUM must always be a power of 2 */
-#define DEFAULT_CHANNEL_SUBBUF_NUM 8
-#define DEFAULT_CHANNEL_SWITCH_TIMER 0 /* usec */
-#define DEFAULT_CHANNEL_READ_TIMER 200 /* usec */
-#define DEFAULT_CHANNEL_OUTPUT LTTNG_EVENT_MMAP
-
-#define DEFAULT_METADATA_SUBBUF_SIZE 4096
-#define DEFAULT_METADATA_SUBBUF_NUM 2
+/* Default JUL domain channel name. */
+#define DEFAULT_JUL_CHANNEL_NAME "lttng_jul_channel"
+/* Default JUL tracepoint name. This is a wildcard for the JUL domain. */
+#define DEFAULT_JUL_EVENT_COMPONENT "lttng_jul"
+#define DEFAULT_JUL_EVENT_NAME DEFAULT_JUL_EVENT_COMPONENT ":*"
+
+/* Default log4j domain channel name. */
+#define DEFAULT_LOG4J_CHANNEL_NAME "lttng_log4j_channel"
+/* Default log4j tracepoint name. This is a wildcard for the log4j domain. */
+#define DEFAULT_LOG4J_EVENT_COMPONENT "lttng_log4j"
+#define DEFAULT_LOG4J_EVENT_NAME DEFAULT_LOG4J_EVENT_COMPONENT ":*"
+
+/* Default Python domain channel name. */
+#define DEFAULT_PYTHON_CHANNEL_NAME "lttng_python_channel"
+/* Default Python tracepoint name. This is a wildcard for the python domain. */
+#define DEFAULT_PYTHON_EVENT_COMPONENT "lttng_python"
+#define DEFAULT_PYTHON_EVENT_NAME DEFAULT_PYTHON_EVENT_COMPONENT ":*"
+
+#define DEFAULT_CHANNEL_OVERWRITE -1
+#define DEFAULT_CHANNEL_TRACEFILE_SIZE CONFIG_DEFAULT_CHANNEL_TRACEFILE_SIZE
+#define DEFAULT_CHANNEL_TRACEFILE_COUNT CONFIG_DEFAULT_CHANNEL_TRACEFILE_COUNT
+
+#define _DEFAULT_CHANNEL_SUBBUF_SIZE CONFIG_DEFAULT_CHANNEL_SUBBUF_SIZE
+#define _DEFAULT_CHANNEL_OUTPUT LTTNG_EVENT_MMAP
+
+/* Metadata channel defaults. */
+#define DEFAULT_METADATA_SUBBUF_SIZE CONFIG_DEFAULT_METADATA_SUBBUF_SIZE
+#define DEFAULT_METADATA_SUBBUF_NUM CONFIG_DEFAULT_METADATA_SUBBUF_NUM
+#define DEFAULT_METADATA_CACHE_SIZE CONFIG_DEFAULT_METADATA_CACHE_SIZE
+#define DEFAULT_METADATA_SWITCH_TIMER CONFIG_DEFAULT_METADATA_SWITCH_TIMER
+#define DEFAULT_METADATA_READ_TIMER CONFIG_DEFAULT_METADATA_READ_TIMER
+#define DEFAULT_METADATA_OUTPUT _DEFAULT_CHANNEL_OUTPUT
/* Kernel has different defaults */
/* DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE must always be a power of 2 */
-#define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE 262144 /* bytes */
-/* DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2 */
-#define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM 4
+#define DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE CONFIG_DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE
+/*
+ * DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM must always be a power of 2.
+ * Update help manually if override.
+ */
+#define DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM CONFIG_DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM
/* See lttng-kernel.h enum lttng_kernel_output for channel output */
-#define DEFAULT_KERNEL_CHANNEL_OUTPUT LTTNG_EVENT_SPLICE
+#define DEFAULT_KERNEL_CHANNEL_OUTPUT LTTNG_EVENT_SPLICE
+#define DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER CONFIG_DEFAULT_KERNEL_CHANNEL_SWITCH_TIMER
+#define DEFAULT_KERNEL_CHANNEL_READ_TIMER CONFIG_DEFAULT_KERNEL_CHANNEL_READ_TIMER
+#define DEFAULT_KERNEL_CHANNEL_LIVE_TIMER CONFIG_DEFAULT_KERNEL_CHANNEL_LIVE_TIMER
/* User space defaults */
/* Must be a power of 2 */
-#define DEFAULT_UST_CHANNEL_SUBBUF_SIZE 4096 /* bytes */
-/* Must be a power of 2 */
-#define DEFAULT_UST_CHANNEL_SUBBUF_NUM 4
+#define DEFAULT_UST_PID_CHANNEL_SUBBUF_SIZE CONFIG_DEFAULT_UST_PID_CHANNEL_SUBBUF_SIZE
+#define DEFAULT_UST_UID_CHANNEL_SUBBUF_SIZE CONFIG_DEFAULT_UST_UID_CHANNEL_SUBBUF_SIZE
+/* Must be a power of 2. Update help manuall if override. */
+#define DEFAULT_UST_PID_CHANNEL_SUBBUF_NUM CONFIG_DEFAULT_UST_PID_CHANNEL_SUBBUF_NUM
+#define DEFAULT_UST_UID_CHANNEL_SUBBUF_NUM CONFIG_DEFAULT_UST_UID_CHANNEL_SUBBUF_NUM
/* See lttng-ust.h enum lttng_ust_output */
-#define DEFAULT_UST_CHANNEL_OUTPUT LTTNG_EVENT_MMAP
+#define DEFAULT_UST_PID_CHANNEL_OUTPUT _DEFAULT_CHANNEL_OUTPUT
+#define DEFAULT_UST_UID_CHANNEL_OUTPUT _DEFAULT_CHANNEL_OUTPUT
+/* Timers in usec. */
+#define DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER CONFIG_DEFAULT_UST_PID_CHANNEL_SWITCH_TIMER
+#define DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER CONFIG_DEFAULT_UST_UID_CHANNEL_SWITCH_TIMER
+#define DEFAULT_UST_PID_CHANNEL_LIVE_TIMER CONFIG_DEFAULT_UST_PID_CHANNEL_LIVE_TIMER
+#define DEFAULT_UST_UID_CHANNEL_LIVE_TIMER CONFIG_DEFAULT_UST_UID_CHANNEL_LIVE_TIMER
+
+#define DEFAULT_UST_PID_CHANNEL_READ_TIMER CONFIG_DEFAULT_UST_PID_CHANNEL_READ_TIMER
+#define DEFAULT_UST_UID_CHANNEL_READ_TIMER CONFIG_DEFAULT_UST_UID_CHANNEL_READ_TIMER
/*
* Default timeout value for the sem_timedwait() call. Blocking forever is not
*/
#define DEFAULT_SEM_WAIT_TIMEOUT 30 /* in seconds */
+/* Default bind addresses for network services. */
+#define DEFAULT_NETWORK_CONTROL_BIND_ADDRESS CONFIG_DEFAULT_NETWORK_CONTROL_BIND_ADDRESS
+#define DEFAULT_NETWORK_DATA_BIND_ADDRESS CONFIG_DEFAULT_NETWORK_DATA_BIND_ADDRESS
+#define DEFAULT_NETWORK_VIEWER_BIND_ADDRESS CONFIG_DEFAULT_NETWORK_VIEWER_BIND_ADDRESS
+#define DEFAULT_AGENT_BIND_ADDRESS CONFIG_DEFAULT_AGENT_BIND_ADDRESS
+
+/* Default network ports for trace streaming support. */
+#define DEFAULT_NETWORK_CONTROL_PORT CONFIG_DEFAULT_NETWORK_CONTROL_PORT
+#define DEFAULT_NETWORK_DATA_PORT CONFIG_DEFAULT_NETWORK_DATA_PORT
+#define DEFAULT_NETWORK_VIEWER_PORT CONFIG_DEFAULT_NETWORK_VIEWER_PORT
+
+/* Agent registration TCP port. */
+#define DEFAULT_AGENT_TCP_PORT CONFIG_DEFAULT_AGENT_TCP_PORT
+
+/*
+ * If a thread stalls for this amount of time, it will be considered bogus (bad
+ * health).
+ */
+#define DEFAULT_HEALTH_CHECK_DELTA_S 20
+#define DEFAULT_HEALTH_CHECK_DELTA_NS 0
+
+/*
+ * Wait period before retrying the lttng_data_pending command in the lttng
+ * stop command of liblttng-ctl.
+ */
+#define DEFAULT_DATA_AVAILABILITY_WAIT_TIME 200000 /* usec */
+
+/*
+ * Wait period before retrying the lttng_consumer_flushed_cache when
+ * the consumer receives metadata.
+ */
+#define DEFAULT_METADATA_AVAILABILITY_WAIT_TIME 200000 /* usec */
+
+/*
+ * The usual value for the maximum TCP SYN retries time and TCP FIN timeout is
+ * 180 and 60 seconds on most Linux system and the default value since kernel
+ * 2.2 thus using the highest value. See tcp(7) for more details.
+ */
+#define DEFAULT_INET_TCP_TIMEOUT 180 /* sec */
+
+/*
+ * Default receiving and sending timeout for an application socket.
+ */
+#define DEFAULT_APP_SOCKET_RW_TIMEOUT CONFIG_DEFAULT_APP_SOCKET_RW_TIMEOUT
+#define DEFAULT_APP_SOCKET_TIMEOUT_ENV "LTTNG_APP_SOCKET_TIMEOUT"
+
+#define DEFAULT_UST_STREAM_FD_NUM 2 /* Number of fd per UST stream. */
+
+#define DEFAULT_SNAPSHOT_NAME "snapshot"
+#define DEFAULT_SNAPSHOT_MAX_SIZE 0 /* Unlimited. */
+
+/* Suffix of an index file. */
+#define DEFAULT_INDEX_FILE_SUFFIX ".idx"
+#define DEFAULT_INDEX_DIR "index"
+
+/* Default lttng command live timer value in usec. */
+#define DEFAULT_LTTNG_LIVE_TIMER CONFIG_DEFAULT_LTTNG_LIVE_TIMER
+
+/* Default runas worker name */
+#define DEFAULT_RUN_AS_WORKER_NAME "lttng-runas"
+
+/* Default LTTng MI XML namespace. */
+#define DEFAULT_LTTNG_MI_NAMESPACE "http://lttng.org/xml/ns/lttng-mi"
+
+/* Default thread stack size; the default mandated by pthread_create(3) */
+#define DEFAULT_LTTNG_THREAD_STACK_SIZE 2097152
+
+/*
+ * Returns the default subbuf size.
+ *
+ * This function depends on a value that is set at constructor time, so it is
+ * unsafe to call it from another constructor.
+ */
+LTTNG_HIDDEN
+size_t default_get_channel_subbuf_size(void);
+
+/*
+ * Returns the default metadata subbuf size.
+ *
+ * This function depends on a value that is set at constructor time, so it is
+ * unsafe to call it from another constructor.
+ */
+LTTNG_HIDDEN
+size_t default_get_metadata_subbuf_size(void);
+
+/*
+ * Returns the default subbuf size for the kernel domain.
+ *
+ * This function depends on a value that is set at constructor time, so it is
+ * unsafe to call it from another constructor.
+ */
+LTTNG_HIDDEN
+size_t default_get_kernel_channel_subbuf_size(void);
+
+/*
+ * Returns the default subbuf size for the UST domain per PID.
+ *
+ * This function depends on a value that is set at constructor time, so it is
+ * unsafe to call it from another constructor.
+ */
+LTTNG_HIDDEN
+size_t default_get_ust_pid_channel_subbuf_size(void);
+
+/*
+ * Returns the default subbuf size for the UST domain per UID.
+ *
+ * This function depends on a value that is set at constructor time, so it is
+ * unsafe to call it from another constructor.
+ */
+LTTNG_HIDDEN
+size_t default_get_ust_uid_channel_subbuf_size(void);
+
+/*
+ * Get the default pthread_attr to use on thread creation.
+ *
+ * Some libc, such as musl, don't honor the limit set for the stack size and use
+ * their own empirically chosen static value. This function checks if the
+ * current stack size is smaller than the stack size limit and if so returns a
+ * pthread_attr_t pointer where the thread stack size is set to the soft stack
+ * size limit.
+ */
+LTTNG_HIDDEN
+pthread_attr_t *default_pthread_attr(void);
+
#endif /* _DEFAULTS_H */
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