Access.Control.Concurrent.QSem

Documentation

module Control.Concurrent.QSem

class Access io => QSemAccess io where

Methods

newQSem' :: Int -> io QSem

Build a new QSem with a supplied initial quantity. The initial quantity must be at least 0.

waitQSem' :: QSem -> io ()

Wait for a unit to become available

signalQSem' :: QSem -> io ()

Signal that a unit of the QSem is available

Instances

QSemAccess IO