| acquire | Control.Concurrent.Classy.Lock, Control.Concurrent.Classy |
| acquireRead | Control.Concurrent.Classy.RWLock, Control.Concurrent.Classy |
| acquireWrite | Control.Concurrent.Classy.RWLock, Control.Concurrent.Classy |
| Async | Control.Concurrent.Classy.Async |
| async | Control.Concurrent.Classy.Async |
| asyncBound | Control.Concurrent.Classy.Async |
| asyncBoundN | Control.Concurrent.Classy.Async |
| asyncN | Control.Concurrent.Classy.Async |
| asyncOn | Control.Concurrent.Classy.Async |
| asyncOnN | Control.Concurrent.Classy.Async |
| asyncOnWithUnmask | Control.Concurrent.Classy.Async |
| asyncOnWithUnmaskN | Control.Concurrent.Classy.Async |
| asyncThreadId | Control.Concurrent.Classy.Async |
| asyncWithUnmask | Control.Concurrent.Classy.Async |
| asyncWithUnmaskN | Control.Concurrent.Classy.Async |
| atomically | Control.Monad.Conc.Class, Control.Concurrent.Classy |
| atomicModifyCRef | Control.Concurrent.Classy.CRef, Control.Concurrent.Classy |
| atomicModifyCRef' | Control.Concurrent.Classy.CRef, Control.Concurrent.Classy |
| atomicModifyIORef | Control.Monad.Conc.Class, Control.Concurrent.Classy.IORef, Control.Concurrent.Classy |
| atomicModifyIORef' | Control.Concurrent.Classy.IORef, Control.Concurrent.Classy |
| atomicWriteCRef | Control.Concurrent.Classy.CRef, Control.Concurrent.Classy |
| atomicWriteIORef | Control.Monad.Conc.Class, Control.Concurrent.Classy.IORef, Control.Concurrent.Classy |