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Devel::MAT::Tool::Reachability(3pm) User Contributed Perl Documentation Devel::MAT::Tool::Reachability(3pm)

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>

2023-03-26 perl v5.36.0