Method check_valid

crates/stdlib/src/mmap.rs:910–918

(&self, vm: &VirtualMachine)

        }

        fn check_valid(&self, vm: &VirtualMachine) -> PyResult<PyMutexGuard<'_, Option<MmapObj>>> {
            let m = self.mmap.lock();

            if m.is_none() {
                return Err(vm.new_value_error("mmap closed or invalid"));
            }

            Ok(m)
        }

        /// TODO: impl resize
        #[allow(dead_code)]