From c790672cc244ac4caba1bda3572829a6c6862891 Mon Sep 17 00:00:00 2001
From: Ben Sima <ben@bsima.me>
Date: Sun, 27 Oct 2019 09:48:52 -0700
Subject: move everything to namespace directories

---
 lore/Control/Concurrent/Go.hs   | 100 ----------------------------------------
 lore/Control/Concurrent/Sima.hs |  12 -----
 2 files changed, 112 deletions(-)
 delete mode 100644 lore/Control/Concurrent/Go.hs
 delete mode 100644 lore/Control/Concurrent/Sima.hs

(limited to 'lore/Control/Concurrent')

diff --git a/lore/Control/Concurrent/Go.hs b/lore/Control/Concurrent/Go.hs
deleted file mode 100644
index 711611f..0000000
--- a/lore/Control/Concurrent/Go.hs
+++ /dev/null
@@ -1,100 +0,0 @@
--- based on
--- https://stackoverflow.com/questions/4522387/how-can-i-emulate-gos-channels-with-haskell
--- but this version encodes end-of-stream on the communication channel, as a Nothing
-
-module Control.Concurrent.Go
-  ( chan
-  , readCh
-  , (-<-)
-  , writeCh
-  , (->-)
-  , go
-  )
-where
-
-import           Control.Concurrent             ( forkIO
-                                                , ThreadId
-                                                , threadDelay
-                                                )
-import           Control.Concurrent.STM.TChan   ( newTChan
-                                                , readTChan
-                                                , writeTChan
-                                                , isEmptyTChan
-                                                , TChan
-                                                )
-import           Control.Monad                  ( forM_ )
-import           GHC.Conc                       ( atomically )
-
--- | Make a new channel.
-chan :: _
-chan = atomically . newTChan
-
--- | Take from a channel.
-readCh :: TChan a -> IO a
-readCh = atomically . readTChan
-
--- | Alias for 'readCh'.
---
--- >>> c <- chan
--- >>> writeCh c "val"
--- >>> -<- c
--- "val"
---
--- I don't think this looks terrible with do-notation:
---
--- >>> c <- chan
--- >>> writeCh c "val"
--- >>> result <- -<- c
--- >>> print result
--- "val"
-(-<-) :: TChan a -> IO a
-(-<-) = readCh
-
--- | Write to a channel.
-writeCh :: TChan a -> a -> IO ()
-writeCh ch v = atomically $ writeTChan ch v
-
--- | Alias for 'writeCh', but flipped to make it read better.
---
--- >>> c <- chan
--- >>> "val" ->- c
--- >>> readCh c
--- "val"
-(->-) :: TChan a -> a -> IO ()
-(->-) = flip writeCh
-
--- | Starts a background process.
-go :: IO () -> IO ThreadId
-go = forkIO
-
-
-{- Example: (TODO: move to module-level docs)
-
--- can I just implement forM/Traversable over the channel?
-forRange :: TChan (Maybe a) -> (a -> IO b) -> IO [b]
-forRange ch fn = helper fn [] where
-  -- helper :: (a -> IO b) -> [b] -> IO [b]
-  helper fn acc = do
-    jv <- readCh ch
-    case jv of
-      Nothing -> return $ reverse acc
-      Just v  -> do
-        b <- fn v
-        helper fn (b : acc)
-
-feedData :: (Num a, Enum a) => TChan (Maybe a) -> IO ()
-feedData ch = do
-  forM_ [1 .. 9999] (\x -> writeCh ch (Just x))
-  writeQ ch Nothing -- EOF value
-
-printData :: TChan (Maybe Int) -> IO ()
-printData c = do
-  forRange c (print :: Int -> IO ())
-  return ()
-
-main :: IO ()
-main = do
-  ch <- chan
-  go $ feedData ch
-  printData ch
--}
diff --git a/lore/Control/Concurrent/Sima.hs b/lore/Control/Concurrent/Sima.hs
deleted file mode 100644
index b69c0bb..0000000
--- a/lore/Control/Concurrent/Sima.hs
+++ /dev/null
@@ -1,12 +0,0 @@
-module Control.Concurrent.Sima
-    ( 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
-- 
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