REF clean up process

lib/XMonad/Internal/Process.hs

@@ -3,7 +3,7 @@
 
 module XMonad.Internal.Process
   ( waitUntilExit
-  , killHandle
+  -- , killHandle
   -- , spawnPipe'
   -- , spawnPipe
   -- , spawnPipeArgs
@@ -21,14 +21,14 @@ import           Control.Exception
 import           Control.Monad
 import           Control.Monad.IO.Class
 
-import           Data.Maybe
+-- import           Data.Maybe
 
 import qualified RIO.Text               as T
 
 import           System.Directory
 import           System.Exit
 import           System.IO
-import           System.Posix.Signals
+-- import           System.Posix.Signals
 import           System.Process
 
 import           XMonad.Core            hiding (spawn)
@@ -42,17 +42,9 @@ import           XMonad.Core            hiding (spawn)
 waitUntilExit :: Show t => t -> IO ()
 waitUntilExit pid = do
   res <- doesDirectoryExist $ "/proc/" ++ show pid
-  when res $ threadDelay 100000 >> waitUntilExit pid
-
-killHandle :: ProcessHandle -> IO ()
-killHandle ph = do
-  ec <- getProcessExitCode ph
-  unless (isJust ec) $ do
-    pid <- getPid ph
-    forM_ pid $ signalProcess sigTERM
-    -- this may fail if the process exits instantly and the handle
-    -- is destroyed by the time we get to this line (I think?)
-    void (try $ waitForProcess ph :: IO (Either IOException ExitCode))
+  when res $ do
+    threadDelay 100000
+    waitUntilExit pid
 
 withDefaultSignalHandlers :: IO a -> IO a
 withDefaultSignalHandlers =
@@ -81,16 +73,3 @@ spawn = io . void . createProcess' . shell'
 
 spawnAt :: MonadIO m => FilePath -> String -> m ()
 spawnAt fp cmd = io $ void $ createProcess' $ (shell' cmd) { cwd = Just fp }
-
--- spawnPipe' :: CreateProcess -> IO (Handle, ProcessHandle)
--- spawnPipe' cp = do
---   -- ASSUME creating a pipe will always succeed in making a Just Handle
---   (Just h, _, _, p) <- createProcess' $ cp { std_in = CreatePipe }
---   hSetBuffering h LineBuffering
---   return (h, p)
-
--- spawnPipe :: String -> IO (Handle, ProcessHandle)
--- spawnPipe = spawnPipe' . shell
-
--- spawnPipeArgs :: FilePath -> [String] -> IO (Handle, ProcessHandle)
--- spawnPipeArgs cmd = spawnPipe' . proc cmd