Method get_objects

crates/vm/src/gc_state.rs:330–353

Get tracked objects (for gc.get_objects) If generation is None, returns all tracked objects. If generation is Some(n), returns objects in generation n only.

(&self, generation: Option<i32>)

    /// If generation is None, returns all tracked objects.
    /// If generation is Some(n), returns objects in generation n only.
    pub fn get_objects(&self, generation: Option<i32>) -> Vec<PyObjectRef> {
        fn collect_from_list(
            list: &LinkedList<GcLink, PyObject>,
        ) -> impl Iterator<Item = PyObjectRef> + '_ {
            list.iter().filter_map(|obj| obj.try_to_owned())
        }

        match generation {
            None => {
                // Return all tracked objects from all generations + permanent
                let mut result = Vec::new();
                for gen_list in &self.generation_lists {
                    result.extend(collect_from_list(&gen_list.read()));
                }
                result.extend(collect_from_list(&self.permanent_list.read()));
                result
            }
            Some(g) if (0..=2).contains(&g) => {
                let guard = self.generation_lists[g as usize].read();
                collect_from_list(&guard).collect()
            }
            _ => Vec::new(),
        }
    }

    /// Check if automatic GC should run and run it if needed.
    /// Called after object allocation.