[GHC] #806: hGetBufNonBlocking doesn't work on Windows

[GHC]

#806: hGetBufNonBlocking doesn't work on Windows
----------------------------+-----------------------------------------------
 Reporter:  titto at kamus.it  |          Owner:  simonmar        
     Type:  bug             |         Status:  new             
 Priority:  normal          |      Milestone:  6.8             
Component:  libraries/base  |        Version:  6.4.2           
 Severity:  normal          |     Resolution:                  
 Keywords:                  |     Difficulty:  Moderate (1 day)
 Testcase:  hGetBuf001      |   Architecture:  x86             
       Os:  Windows         |  
----------------------------+-----------------------------------------------
Changes (by simonmar):

  * difficulty:  Unknown => Moderate (1 day)
  * milestone:  6.6.1 => 6.8
  * testcase:  => hGetBuf001
  * summary:  hGetBufNonBlocking doesn't work with -threaded on Windows =>
              hGetBufNonBlocking doesn't work on Windows

Comment:

 Changing the title of this bug: hGetBufNonBlocking doesn't work at all on
 Windows, -threaded or not.  The problem is that the I/O system doesn't
 have any non-blocking primitives, unlike on Unix where we use
 `O_NONBLOCK`.

 One way to fix this would be to start using overlapped I/O on Widnows,
 together with the IO manager thread to wait for blocking I/O operations.
 This would be a good thing, but it probably isn't going to happen for
 6.6.1.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/806>
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