diff options
| author | Ben Sima <ben@bsima.me> | 2019-11-02 15:33:13 -0700 |
|---|---|---|
| committer | Ben Sima <ben@bsima.me> | 2019-11-02 15:33:13 -0700 |
| commit | 9d114cfc773171b0a95bd4d2c39f1bb0eb783c8d (patch) | |
| tree | 20766a760ed0141cf39153565e8552f6739c632d /Com/Simatime/Sema.hs | |
| parent | d2a37f5de160160eadbacd7b8dc2567f78a0543d (diff) | |
rename everything back to caps to appease ghc
Diffstat (limited to 'Com/Simatime/Sema.hs')
| -rw-r--r-- | Com/Simatime/Sema.hs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Com/Simatime/Sema.hs b/Com/Simatime/Sema.hs new file mode 100644 index 0000000..f0f75da --- /dev/null +++ b/Com/Simatime/Sema.hs @@ -0,0 +1,12 @@ +module Com.Simatime.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 |