The following list includes all of the built-in variables for the DTrace framework.
int64_t arg0, ..., arg9
The first ten input arguments to a probe represented as raw 64-bit integers. If fewer than ten arguments are passed to the current probe, the remaining variables return zero.
args[]
The typed arguments to the current probe, if any. The args[] array is accessed using an integer index, but each element is defined
to be the type corresponding to the given probe argument. For example, if
the args[] array is referenced by a
read
(
2
)
system call probe, args[0] is of
type int, args[1] is of type void
*, and args[2] is of type size_t.
uintptr_t caller
The program counter location of the current thread just before entering the current probe.
chipid_t chip
The CPU chip identifier for the current physical chip. See Chapter 26, sched Provider, in Solaris Dynamic Tracing Guide for more information.
processorid_t cpu
The CPU identifier for the current CPU. See Chapter 26, sched Provider, in Solaris Dynamic Tracing Guide for more information.
cpuinfo_t *curcpu
The CPU information for the current CPU. See Chapter 26, sched Provider, in Solaris Dynamic Tracing Guide for more information.
lwpsinfo_t *curlwpsinfo
The lightweight process (LWP) state of the LWP associated with the current thread. This structure is described in further detail in the proc ( 4 ) man page.
psinfo_t *curpsinfo
The process state of the process associated with the current thread. This structure is described in further detail in the This structure is described in further detail in the proc ( 4 ) man page.
kthread_t *curthread
The address of the operating system kernel's internal data
structure for the current thread, the kthread_t. The kthread_t is defined in <sys/thread.h>
. Refer
to Solaris Internals for more information on this variable
and other operating system data structures.
string cwd
The name of the current working directory of the process associated with the current thread.
uint_t epid
The enabled probe ID (EPID) for the current probe. This integer uniquely identifiers a particular probe that is enabled with a specific predicate and set of actions.
int errno
The error value returned by the last system call executed by this thread.
string execname
The name that was passed to exec ( 2 ) to execute the current process.
gid_t gid
The real group ID of the current process.
uint_t id
The probe ID for the current probe. This ID is the system-wide
unique identifier for the probe as published by DTrace and listed in the output
of dtrace
l.
uint_t ipl
The interrupt priority level (IPL) on the current CPU at the time that the probe fires. Refer to Solaris Internals for more information on interrupt levels and interrupt handling in the Solaris operating system kernel.
lgrp_id_t lgrp
The locality group ID for the latency group of which the current CPU is a member. See Chapter 26, sched Provider, in Solaris Dynamic Tracing Guide for more information on CPU management in DTrace. See Chapter 4, Locality Group APIs, in Programming Interfaces Guide for more information about locality groups.
pid_t pid
The process ID of the current process.
pid_t ppid
The parent process ID of the current process.
string probefunc
The function name portion of the current probe's description.
string probemod
The module name portion of the current probe's description.
string probename
The name portion of the current probe's description.
string probeprov
The provider name portion of the current probe's description.
psetid_t pset
The processor set ID for the processor set that contains the current CPU. See Chapter 26, sched Provider, in Solaris Dynamic Tracing Guide for more information.
string root
The name of the root directory of the process associated with the current thread.
uint_t stackdepth
The current thread's stack frame depth at probe firing time.
id_t tid
The thread ID of the current thread. For threads that are associated with user processes, this value is equal to the result of a call to pthread_self ( 3C ) .
uint64_t timestamp
The current value of a nanosecond timestamp counter. This counter increments from an arbitrary point in the past and should only be used for relative computations.
uid_t uid
The real user ID of the current process.
uint64_t uregs[]
The current thread's saved user-mode register values at probe
firing time. Use of the uregs[] array is discussed in Chapter 33, User Process Tracing, in Solaris
Dynamic Tracing Guide
.
uint64_t vtimestamp
The current value of a nanosecond timestamp counter. The counter is virtualized to the amount of time that the current thread has been running on a CPU. The counter does not include the time that is spent in DTrace predicates and actions. This counter increments from an arbitrary point in the past and should only be used for relative time computations.
uint64_t walltimestamp
The current number of nanoseconds since 00:00 Universal Coordinated Time, January 1, 1970.