-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Tiny library for joinable computations / threads with results.
--   
--   Spawn a concurrent <a>IO</a> computation and later demand its result.
--   Tiny API and implementation.
@package spawn
@version 0.2

module Control.Concurrent.Spawn

-- | Spawn a concurrent computation. Produces an action which demands the
--   result. Any exception from the original computation is re-thrown when
--   and where the result is demanded.
spawn :: IO a -> IO (IO a)

-- | Two ways a computation of type <tt><a>IO</a> a</tt> can end.
type Result a = Either SomeException a

-- | Spawn a concurrent computation. Produces an action which demands a
--   <tt><a>Result</a></tt>.
spawnTry :: IO a -> IO (IO (Result a))

-- | Given <i>n</i>, produces a function to wrap <tt><a>IO</a></tt>
--   actions. No more than <i>n</i> wrapped actions will be in progress at
--   one time.
pool :: Int -> IO (IO a -> IO a)