[GHC] #11965: USE_PTHREAD_FOR_ITIMER causes unnecessary wake-ups

[GHC]

#11965: USE_PTHREAD_FOR_ITIMER causes unnecessary wake-ups
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:
               Type:  bug            |            Status:  new
           Priority:  high           |         Milestone:
          Component:  Runtime        |           Version:  7.10.3
  System                             |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Runtime
  Unknown/Multiple                   |  performance bug
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:  #1623
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 The `USE_PTHREAD_FOR_ITIMER` path appears to regress #1623 as it has no
 ability to disarm the timer when the ticker is in the `STOPPED` state.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11965>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler