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Oracle® Solaris 11.4 DTrace (Dynamic Tracing) Guide

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Updated: September 2020
 
 
Chapter 4

DTrace Actions and Subroutines

You can use D function calls such as trace and printf to invoke two different kinds of services provided by DTrace: actions that trace data or modify state external to DTrace, and subroutines that affect only internal DTrace state. This chapter defines the actions and subroutines and describes their syntax and semantics.