blob: 5b32bab469f7d897ee67a6e92c5c6bfae2869f6c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
|
module Control.Concurrent.Sema
( mapPool,
)
where
import qualified Control.Concurrent.MSem as Sem
-- | Simaphore-based throttled 'mapConcurrently'.
mapPool :: Traversable t => Int -> (a -> IO b) -> t a -> IO (t b)
mapPool n f xs = do
sima <- Sem.new n
mapConcurrently (Sem.with sima . f) xs
|
