Method get_version_for_current_state

crates/vm/src/builtins/function.rs:627–638

Returns the current version, assigning a fresh one if previously invalidated. Returns 0 if the version counter has overflowed. `_PyFunction_GetVersionForCurrentState`

(&self)

    /// Returns 0 if the version counter has overflowed.
    /// `_PyFunction_GetVersionForCurrentState`
    pub fn get_version_for_current_state(&self) -> u32 {
        let v = self.func_version.load(Relaxed);
        if v != 0 {
            return v;
        }
        let new_v = next_func_version();
        if new_v == 0 {
            return 0;
        }
        self.func_version.store(new_v, Relaxed);
        new_v
    }

    /// function_kind(SIMPLE_FUNCTION) equivalent for CALL specialization.
    /// Returns true if: CO_OPTIMIZED, no VARARGS, no VARKEYWORDS, no kwonly args.