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1. tryWithRead :: RWLock -> IO a -> IO (Maybe a)

   concurrent-extra	Control.Concurrent.ReadWriteLock

   A non-blocking withRead. First tries to acquire the lock. If that fails, Nothing is returned. If it succeeds, the computation is performed. When the computation terminates, whether normally or by raising an exception, the lock is released and Just the result of the computation is returned.

2. waitRead :: RWLock -> IO ()

   concurrent-extra	Control.Concurrent.ReadWriteLock

   • When the state is "write", waitRead blocks until a call to releaseWrite in another thread changes the state to "free".
   • When the state is "free" or "read" waitRead returns immediately.
   waitRead does not alter the state of the lock. Note that waitRead is just a convenience function defined as:

   waitRead l = mask_ $ acquireRead l >> releaseRead l
   

3. withRead :: RWLock -> IO a -> IO a

   concurrent-extra	Control.Concurrent.ReadWriteLock

   A convenience function wich first acquires read access and then performs the computation. When the computation terminates, whether normally or by raising an exception, the read lock is released.

4. outputThreads :: OutputHandle -> TMVar Integer

   concurrent-output	System.Console.Concurrent.Internal

   No documentation available.

5. registerOutputThread :: IO ()

   concurrent-output	System.Console.Concurrent.Internal

   No documentation available.

6. unregisterOutputThread :: IO ()

   concurrent-output	System.Console.Concurrent.Internal

   No documentation available.

7. AlreadyExists :: Text -> Keyspace -> Table -> Error

   cql	Database.CQL.Protocol

   No documentation available.

8. OcReady :: OpCode

   cql	Database.CQL.Protocol

   No documentation available.

9. RsReady :: Maybe UUID -> [Text] -> Ready -> Response k a b

   cql	Database.CQL.Protocol

   No documentation available.

10. AlreadyExists :: Text -> Keyspace -> Table -> Error

    cql	Database.CQL.Protocol.Internal

    No documentation available.

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