anthropics / tokio Conditional Complexity

anthropics / tokio

Conditional Complexity

The distribution of complexity of units (measured with McCabe index).

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

Learn more...

To learn more about conditional complexity and techniques for reducing this type of complexity, Sokrates recommends the following resources:

Simplifying Conditional Expressions, sourcemaking.com
Cyclomatic Complexity, wikipedia.org

Conditional Complexity Overall

There are 1,935 units with 18,789 lines of code in units (29.8% of code).

0 very complex units (0 lines of code)
0 complex units (0 lines of code)
6 medium complex units (617 lines of code)
63 simple units (2,659 lines of code)
1,866 very simple units (15,513 lines of code)

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

3D view of all units

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 50 most complex units

Unit	# lines	McCabe index	# params
fn poll_notified() in tokio/src/sync/notify.rs	186	21	2
fn run() in tokio/src/runtime/blocking/pool.rs	81	18	2
fn poll_acquire() in tokio/src/sync/batch_semaphore.rs	103	16	5
fn recv_ref() in tokio/src/sync/broadcast.rs	73	14	3
fn parse_knobs() in tokio-macros/src/entry.rs	112	13	3
fn with_worker_pool() in benches/rt_quiesce.rs	62	11	3
fn poll_recv() in tokio/src/sync/oneshot.rs	61	10	2
fn block_on() in tokio/src/runtime/scheduler/current_thread/mod.rs	63	10	2
fn poll_read_to_end() in tokio/src/io/util/read_to_end.rs	62	10	3
fn poll_write_vectored() in tokio/src/io/util/buf_writer.rs	52	10	3
fn do_register() in tokio/src/sync/task/atomic_waker.rs	65	9	2
fn add_permits_locked() in tokio/src/sync/batch_semaphore.rs	57	9	3
fn proptest_log_histogram_invariants() in tokio/src/runtime/metrics/histogram/h2_histogram.rs	50	9	1
fn run_task() in tokio/src/runtime/scheduler/multi_thread/worker.rs	104	9	3
fn clean_pattern() in tokio-macros/src/select.rs	51	8	1
fn is_test_attribute() in tokio-macros/src/entry.rs	24	8	1
fn drop_notified() in tokio/src/sync/notify.rs	39	8	1
fn complete() in tokio/src/runtime/task/harness.rs	31	8	1
fn run_monitor() in tokio/src/runtime/stall_detection.rs	80	8	3
fn spawn_task() in tokio/src/runtime/blocking/pool.rs	55	8	3
fn quiesce_park_hook() in tokio/src/runtime/scheduler/current_thread/mod.rs	36	8	4
fn poll() in tokio/src/runtime/io/scheduled_io.rs	78	8	2
fn poll_next_entry() in tokio-stream/src/stream_map.rs	32	8	2
fn action() in tokio-test/src/io.rs	39	8	1
fn poll_write() in tokio-test/src/io.rs	72	8	3
fn poll_next() in tokio-util/src/codec/framed_impl.rs	78	8	2
fn build_config() in tokio-macros/src/entry.rs	96	7	4
fn close() in tokio/src/sync/oneshot.rs	21	7	1
fn inner_notify_waiters() in tokio/src/sync/notify.rs	58	7	3
fn run() in tokio/src/runtime/scheduler/multi_thread/worker.rs	52	7	2
fn park() in tokio/src/runtime/scheduler/multi_thread/worker.rs	22	7	2
fn drop() in tokio/src/runtime/io/driver/uring.rs	24	7	1
fn poll_write() in tokio/src/fs/file.rs	55	7	3
fn poll_write_vectored() in tokio/src/fs/file.rs	55	7	3
fn contention_resubscribe() in benches/sync_watch.rs	43	7	1
fn many_signals() in benches/signal.rs	41	7	1
fn contention_impl() in benches/sync_broadcast.rs	37	7	1
fn spawn_blocking_concurrency() in benches/spawn_blocking.rs	37	7	1
fn poll_idx() in tokio-util/src/time/delay_queue.rs	25	7	2
fn drop() in tokio/src/task/task_local.rs	11	6	1
fn find_block() in tokio/src/sync/mpsc/list.rs	34	6	2
fn is_maybe_closed() in tokio/src/sync/mpsc/list.rs	25	6	3
fn notify_rx)() in tokio/src/sync/broadcast.rs	47	6	0
fn signal_enable() in tokio/src/signal/unix.rs	28	6	2
fn poll() in tokio/src/process/unix/reap.rs	22	6	2
fn eq() in tokio/src/runtime/task/trace/symbol.rs	16	6	2
fn test_level_for() in tokio/src/runtime/time/wheel/mod.rs	31	6	0
fn test_level_for() in tokio/src/runtime/time_alt/wheel/mod.rs	31	6	0
fn format_trace() in tokio/src/runtime/stall_detection.rs	42	6	3
fn next_task() in tokio/src/runtime/scheduler/multi_thread/worker.rs	34	6	2