Posix.Poll

Documentation

uninterruptiblePoll :: Ptr PollFd -> CNfds -> IO (Either Errno CInt)

The timeout argument is omitted since it is nonsense to choose anything other than 0 when using the unsafe FFI.

uninterruptiblePollMutablePrimArray :: MutablePrimArray RealWorld PollFd -> CNfds -> IO (Either Errno CInt)

data PollFd

Constructors

PollFd

Fields

• descriptor :: !Fd

  The fd field of struct pollfd

• request :: !(Event Request)

  The events field of struct pollfd

• response :: !(Event Response)

  The revents field of struct pollfd

Instances

Storable PollFd

Defined in Posix.Poll.Types

Methods

sizeOf :: PollFd -> Int

alignment :: PollFd -> Int

peekElemOff :: Ptr PollFd -> Int -> IO PollFd

pokeElemOff :: Ptr PollFd -> Int -> PollFd -> IO ()

peekByteOff :: Ptr b -> Int -> IO PollFd

pokeByteOff :: Ptr b -> Int -> PollFd -> IO ()

peek :: Ptr PollFd -> IO PollFd

poke :: Ptr PollFd -> PollFd -> IO ()

Prim PollFd

Defined in Posix.Poll.Types

Methods

sizeOf# :: PollFd -> Int#

alignment# :: PollFd -> Int#

indexByteArray# :: ByteArray# -> Int# -> PollFd

readByteArray# :: MutableByteArray# s -> Int# -> State# s -> (#State# s, PollFd#)

writeByteArray# :: MutableByteArray# s -> Int# -> PollFd -> State# s -> State# s

setByteArray# :: MutableByteArray# s -> Int# -> Int# -> PollFd -> State# s -> State# s

indexOffAddr# :: Addr# -> Int# -> PollFd

readOffAddr# :: Addr# -> Int# -> State# s -> (#State# s, PollFd#)

writeOffAddr# :: Addr# -> Int# -> PollFd -> State# s -> State# s

setOffAddr# :: Addr# -> Int# -> Int# -> PollFd -> State# s -> State# s

data Exchange

Constructors

Request

Response

input :: Event e

The POLLIN event.

output :: Event e

The POLLOUT event.

error :: Event Response

The POLLERR event.

hangup :: Event Response

The POLLHUP event.

invalid :: Event Response

The POLLNVAL event.

isSubeventOf :: Event e -> Event e -> Bool

Is the first argument a subset of the second argument?