FASTTRAP(4D) 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)