#2189: hSetBuffering stdin NoBuffering doesn't work on Windows
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Reporter: FalconNL | Owner:
Type: bug | Status: new
Priority: high | Milestone: 6.10.2
Component: libraries/base | Version: 6.8.2
Severity: normal | Resolution:
Keywords: hsetbuffering buffering buffer | Difficulty: Unknown
Testcase: | Architecture: x86
Os: Windows |
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Comment (by simonmar):
First, I completely agree that we should be using the Win32 API directly
instead of the POSIX compatibility layer. It's that way for historical
reasons - I think it was easier to port the IO library to Windows in the
first place by using the POSIX layer. As you say, #806 would be helped by
that, but also the Windows side of #635, and #989.
The call sequence you posted only applies to the non-threaded RTS. With
the threaded RTS, everything is in the IO library. We still end up
calling `read()`, but directly from Haskell.
Incedentally, there ''is'' a way to get a `HANDLE` from a file descriptor:
`_get_osfhandle(fd)`. You might want to look at
`libraries\base\cbits\inputReady.c` for some serious console hackery.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2189#comment:13>
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