-- ToDo: we don't have a non-blocking primitve read on Win32
readRawBufferNoBlock :: String -> FD -> Bool -> RawBuffer -> Int -> CInt -> IO CInt
-readRawBufferNoBlock = readRawBufferNoBlock
+readRawBufferNoBlock = readRawBuffer
-- Async versions of the read/write primitives, for the non-threaded RTS
RawDevice ->
mkFileHandle fd is_socket filepath ha_type binary
- _ ->
- ioException (IOError Nothing UnsupportedOperation "openFd"
- "unknown file type" Nothing)
-
fdToHandle :: FD -> IO Handle
fdToHandle fd = do
mode <- fdGetMode fd
-- On Windows, if this is a read/write handle and we are in text mode,
-- turn off buffering. We don't correctly handle the case of switching
-- from read mode to write mode on a buffered text-mode handle, see bug
- -- #679.
+ -- \#679.
bmode <- case ha_type of
ReadWriteHandle | not binary -> return NoBuffering
_other -> return bmode
dupHandleTo other_side hto_ h_ = do
flushBuffer h_
- new_fd <- throwErrnoIfMinus1 "dupHandleTo" $
- c_dup2 (fromIntegral (haFD h_)) (fromIntegral (haFD hto_))
- dupHandle_ other_side h_ new_fd
+ -- Windows' dup2 does not return the new descriptor, unlike Unix
+ throwErrnoIfMinus1 "dupHandleTo" $
+ c_dup2 (fromIntegral (haFD h_)) (fromIntegral (haFD hto_))
+ dupHandle_ other_side h_ (haFD hto_)
dupHandle_ other_side h_ new_fd = do
buffer <- allocateBuffer dEFAULT_BUFFER_SIZE (initBufferState (haType h_))