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Synopsis |
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Documentation |
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type FileOffset = COff |
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myfdRead :: Fd -> Ptr CChar -> ByteCount -> IO (Either Errno ByteCount) |
Alas, GHC provides no function to read from Fd to an allocated buffer.
The library function fdRead is not appropriate as it returns a string
already. I'd rather get data from a buffer.
Furthermore, fdRead (at least in GHC) allocates a new buffer each
time it is called. This is a waste. Yet another problem with fdRead
is in raising an exception on any IOError or even EOF. I'd rather
avoid exceptions altogether.
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myfdSeek :: Fd -> SeekMode -> FileOffset -> IO (Either Errno FileOffset) |
The following fseek procedure throws no exceptions.
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newtype Errno |
Haskell representation for errno values.
The implementation is deliberately exposed, to allow users to add
their own definitions of Errno values.
| Constructors | | Instances | |
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select'read'pending :: [Fd] -> IO (Either Errno [Fd]) |
poll if file descriptors have something to read
Return the list of read-pending descriptors
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Produced by Haddock version 2.7.2 |