FASTTRAP(4D) Devices FASTTRAP(4D)
NAME
fasttrap - DTrace user instruction tracing provider
DESCRIPTION
The
fasttrap driver is a DTrace dynamic tracing provider that
performs dynamic instrumentation of arbitrary instructions in illumos
processes. The
fasttrap driver implements the DTrace
fasttrap and
pid providers.
The
fasttrap driver is not a public interface and you access
instrumentation offered by this provider through DTrace. Refer to the
Dynamic Tracing Guide for a description of the public documented
interfaces available for the DTrace facility and the probes offered
by the
fasttrap provider.
SPARC ONLY
The
fasttrap provider provides a DTrace probe that fires each time a
user process executes an instruction. The
pid provider allows for the
dynamic creation of DTrace probes corresponding to instruction
locations inside any user process specified using a process ID and an
instruction address or symbol name. Together these providers permit
DTrace users to perform instrumentation of user processes and to
trace the interactions between processes and the operating system.
See the chapter entitled "User Process Tracing" in the
Dynamic Tracing Guide for information on how to use these providers to
instrument processes.
ATTRIBUTES
See
attributes(7) for a description of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Private |
+--------------------+-----------------+
SEE ALSO
dtrace(4D),
attributes(7),
dtrace(8) Dynamic Tracing Guide:
https://illumos.org/books/dtrace/
December 10, 2017 FASTTRAP(4D)
