Harden Structure against memory leak
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The extensions implementation of packstream `Structure` could leak memory when being part of a reference cycle. In reality this doesn't matter because the driver never constructs cyclic `Structure`s. Every packstream value is a tree in terms of references (both directions: packing and unpacking). This change is meant to harden the extensions against introducing effective memory leaks in the driver should the driver's usage of `Structure` change in the future.
robsdedude
changed the title
Structure against memory leak
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The extensions implementation of packstream
Structurecould leak memory when being part of a reference cycle. In reality this doesn't matter because the driver never constructs cyclicStructures. Every packstream value is a tree in terms of references (both directions: packing and unpacking).This change is meant to harden the extensions against introducing effective memory leaks in the driver should the driver's usage of
Structurechange in the future.See also https://pyo3.rs/v0.22.0/class/protocols#garbage-collector-integration