DOKK / manpages / debian 12 / libdevel-mat-perl / Devel::MAT::Tool::Inrefs.3pm.en
Devel::MAT::Tool::Inrefs(3pm) User Contributed Perl Documentation Devel::MAT::Tool::Inrefs(3pm)

"Devel::MAT::Tool::Inrefs" - annotate which SVs are referred to by others

This "Devel::MAT" tool annotates each SV with back-references from other SVs that refer to it. It follows the "outrefs" method of every heap SV and annotates the referred SVs with back-references pointing back to the SVs that refer to them.

This tool adds the following SV methods.

   @refs = $sv->inrefs

Returns a list of Reference objects for each of the SVs that refer to this one. This is formed by the inverse mapping along the SV graph from "outrefs".

   @refs = $sv->inrefs_strong
   @refs = $sv->inrefs_weak
   @refs = $sv->inrefs_direct
   @refs = $sv->inrefs_indirect
   @refs = $sv->inrefs_inferred

Returns lists of Reference objects filtered by type, analogous to the various "outrefs_*" methods.

   pmat> inrefs defstash
   s  the hash  GLOB(%*) at 0x556e47243e40

Shows the incoming references that refer to a given SV.

Takes the following named options:

Include weak direct references in the output (by default only strong direct ones will be included).
Include both weak and indirect references in the output.

Paul Evans <leonerd@leonerd.org.uk>

2023-03-26 perl v5.36.0