Safe Haskell	Safe-Inferred
Language	Haskell2010

Polysemy.Conc.Effect.Sync

Description

Synopsis

data Sync d :: Effect where
- Block :: Sync d m d
- Wait :: TimeUnit u => u -> Sync d m (Maybe d)
- Try :: Sync d m (Maybe d)
- TakeBlock :: Sync d m d
- TakeWait :: TimeUnit u => u -> Sync d m (Maybe d)
- TakeTry :: Sync d m (Maybe d)
- PutBlock :: d -> Sync d m ()
- PutWait :: TimeUnit u => u -> d -> Sync d m Bool
- PutTry :: d -> Sync d m Bool
- Empty :: Sync d m Bool
type ScopedSync a = Scoped_ (Sync a)

Documentation

data Sync d :: Effect where Source #

Abstracts an MVar.

For documentation on the constructors, see the module Polysemy.Conc.Effect.Sync.

import Polysemy.Conc (Sync)
import qualified Polysemy.Conc.Effect.Sync as Sync

prog :: Member (Sync Int) r => Sem r Int
prog = do
  Sync.putTry 5
  Sync.takeBlock

Constructors

Block :: Sync d m d	Read the variable, waiting until a value is available.
Wait :: TimeUnit u => u -> Sync d m (Maybe d)	Read the variable, waiting until a value is available or the timeout has expired.
Try :: Sync d m (Maybe d)	Read the variable, returning `Nothing` immmediately if no value was available.
TakeBlock :: Sync d m d	Take the variable, waiting until a value is available.
TakeWait :: TimeUnit u => u -> Sync d m (Maybe d)	Take the variable, waiting until a value is available or the timeout has expired.
TakeTry :: Sync d m (Maybe d)	Take the variable, returning `Nothing` immmediately if no value was available.
PutBlock :: d -> Sync d m ()	Write the variable, waiting until it is writable.
PutWait :: TimeUnit u => u -> d -> Sync d m Bool	Write the variable, waiting until it is writable or the timeout has expired.
PutTry :: d -> Sync d m Bool	Write the variable, returning `False` immmediately if a value was available.
Empty :: Sync d m Bool	Indicate whether the variable is empty.

type ScopedSync a = Scoped_ (Sync a) Source #

Convenience alias.