[GHC] #8158: Replace IO manager's IntMap with a mutable hash table

[GHC]

#8158: Replace IO manager's IntMap with a mutable hash table
-------------------------------+-------------------------------------------
        Reporter:  bos         |            Owner:  AndreasVoellmy
            Type:  feature     |           Status:  patch
  request                      |        Milestone:  7.8.1
        Priority:  high        |          Version:  7.7
       Component:              |         Keywords:
  libraries/base               |     Architecture:  Unknown/Multiple
      Resolution:              |       Difficulty:  Easy (less than 1 hour)
Operating System:              |       Blocked By:
  Unknown/Multiple             |  Related Tickets:
 Type of failure:  Other       |
       Test Case:              |
        Blocking:              |
-------------------------------+-------------------------------------------

Comment (by AndreasVoellmy):

 Replying to [comment:11 thoughtpolice]:
 >
 > Andreas - could you take a look please? Feel free to merge this yourself
 if you'd like, or otherwise just give the OK.

 Sorry - I've been out of touch for the past week. I'll be able to take a
 look at this at the end of the week and over the weekend. I'll run tests
 on my big multicore machine that I used for the mio paper.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8158#comment:14>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler