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.

$r = $sv->reachable

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

AUTHOR

Paul Evans <leonerd@leonerd.org.uk>