[GHC] #8684: hWaitForInput cannot be interrupted by async exceptions on unix

[GHC]

#8684: hWaitForInput cannot be interrupted by async exceptions on unix
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        Reporter:  nh2               |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Core Libraries    |              Version:  7.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:  13497, 13525      |             Blocking:
 Related Tickets:  #12912, #13525    |  Differential Rev(s):  Phab:D42
       Wiki Page:                    |
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Comment (by simonmar):

 I think the table above is a bit wrong. The relevant bit of code is

 {{{
 #if defined(linux_HOST_OS) && defined(THREADED_RTS) && HAVE_SYS_TIMERFD_H
 #define USE_PTHREAD_FOR_ITIMER
 #endif
 }}}

 which means we should have (I re-ordered the lines a bit)

 {{{
 - POSIX (method selected in `posix/Itimer.c`)
   - Linux, threaded, >= 2.6.25     -> pthread with timerfd
   - Linux, threaded, <  2.6.25     -> timer_create() if it exists,
 otherwise setitimer()
   - Linux, non-threaded RTS        -> timer_create() if it exists,
 otherwise setitimer()
   - Darwin                         -> pthread without timerfd
   - iOS                            -> pthread without timerfd
 - Windows (`win32/Ticker.c`)
   - Windows                        -> CreateTimerQueueTimer()
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8684#comment:31>
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