distributed-process-0.3.0: Cloud Haskell: Erlang-style concurrency in Haskell

Safe HaskellNone

Control.Distributed.Process.Internal.CQueue

Description

Concurrent queue for single reader, single writer

Synopsis

Documentation

data CQueue a Source

data BlockSpec Source

Constructors

NonBlocking 
Blocking 
Timeout Int 

newCQueue :: IO (CQueue a)Source

enqueue :: CQueue a -> a -> IO ()Source

dequeueSource

Arguments

:: forall a b .  
=> CQueue a

Queue

-> BlockSpec

Blocking behaviour

-> [a -> Maybe b]

List of matches

-> IO (Maybe b)

Nothing only on timeout

Dequeue an element

The timeout (if any) is applied only to waiting for incoming messages, not to checking messages that have already arrived