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Devel-MAT-0.24
River stage one • 3 direct dependents • 3 total dependents
29 ++
/ Devel::MAT::Tool::Reachability

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>