11.10 fasttrap Provider

The fasttrap provider performs dynamic instrumentation of arbitrary instructions in user-space threads. Unlike most other DTrace providers, the fasttrap provider is not designed for tracing system activity. Rather, this provider is intended as a way for DTrace consumers to inject information into the DTrace framework by activating the fasttrap probe.

For more information about enabling statically defined probes in user-space programs, see Chapter 13, Statically Defined Tracing of User Applications.