Devel::MAT::Tool::Reachability(3)

NAME
"Devel::MAT::Tool::Reachability" - analyse how SVs are reachable

DESCRIPTION
This "Devel::MAT" tool determines which SVs are reachable via any known roots and which are not. For reachable SVs, they are classified into several broad categories:

•   SVs that directly make up the symbol table.

•   SVs that form the padlist of functions or store the names of lexical variables.

•   SVs that hold the value of lexical variables.

•   User data stored in package globals, lexical variables, or referenced recursively via structures stored in them.

•   Miscellaneous other SVs that are used to implement the internals of the interpreter.

SV METHODS
This tool adds the following SV methods.

  reachable
   $r = $sv->reachable;

Returns true if the SV is reachable from a known root.

AUTHOR
Paul Evans <leonerd@leonerd.org.uk>