#4514: IO manager can deadlock if a file descriptor is closed behind its back
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Reporter: adept | Owner: bos
Type: bug | Status: patch
Priority: normal | Component: Runtime System
Version: 7.0.1 | Keywords:
Testcase: | Blockedby:
Os: Linux | Blocking:
Architecture: Unknown/Multiple | Failure: Incorrect result at runtime
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Comment(by bos):
I think we might need to change the type of {{{threadWait}}} (and hence
{{{threadWaitRead}}} and {{{threadWaitWrite}}}), so that it either takes a
parameter indicating what exception to throw, or returns a value that the
caller can inspect to see what kind of exception ''it'' should throw. The
former seems safer to me.
We could use this for two cases:
* we close a file descriptor behind a waiter's back
* a back end's {{{poll}}} method returns the equivalent of {{{POLLHUP}}}
(and maybe {{{POLLERR}}})
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4514#comment:22>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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