resource-owners

PostgreSQL resource owner leaks occur when reference-counted resources like buffer pins or catcache references are not properly released. This skill diagnoses improper cleanup paths and incorrect resource-owner scoping to resolve leak warnings.

The callback-based resource management system in PostgreSQL 17 requires registering reference-counted resources through the ResourceOwner infrastructure. This skill provides guidance on implementing three-phase release discipline and callback-based resource registration for extensions and core subsystems.

Managing buffer pins and catcache references across subtransaction boundaries requires the ResourceOwner infrastructure to automate lifecycle cleanup. This skill ensures reference-counted resources are released at transaction, subtransaction, or portal boundaries to prevent memory leaks.

PostgreSQL 17 requires a three-phase release discipline for custom resource kinds managed through the ResourceOwner infrastructure. This skill applies the callback-based registration pattern needed to safely automate cleanup of new resource types in backend extensions.

DSM segments cause dangling pointers in PostgreSQL backend extensions when their reference counts are not tracked within the correct resource-owner scope. This skill automates the management and cleanup of DSM segments and other reference-counted resources to prevent such memory safety issues.