Concurrency Reference

kostroutine

• kostroutine fn(args...) schedules a function on runtime worker threads.

• waitAll() blocks until all scheduled routines finish.

Channels

Create channels:

• chan() for unbounded channels

• chan(n) for buffered channels (n must be > 0)

Channel operations:

• send(ch, value)

• recv(ch)

• close(ch)

• trySend(ch, value) returns bool

• tryRecv(ch, fallback) returns received value or fallback

select

Supported case forms:

• case recv(ch) as v:

• case send(ch, v):

• case timeout(ms):

• default:

Current behavior:

• deterministic selection (first ready case in source order)

• timeout(ms) requires non-negative int milliseconds