[GHC] #9261: -S prints incorrect number of bound tasks

[GHC]

#9261: -S prints incorrect number of bound tasks
-------------------------------------+-------------------------------------
        Reporter:  edsko             |                   Owner:  thomie
            Type:  bug               |                  Status:  closed
        Priority:  low               |               Milestone:  7.12.1
       Component:  Runtime System    |                 Version:  7.8.2
      Resolution:  fixed             |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:  #8124             |                Blocking:
                                     |  Differential Revisions:  Phab:D746
-------------------------------------+-------------------------------------
Changes (by thomie):

 * status:  patch => closed
 * resolution:   => fixed
 * related:   => #8124


Comment:

 The code seems correct to me, so I'm closing this. But if you think you
 really do see weird numbers reported, of course reopen.

 Note that if your code doesn't explicitly call `hs_thread_done` (#8124),
 the number of bound tasks never decreases. So `taskCount` would be the sum
 of the total number of bound tasks and the total number of worker tasks
 ever created in that case.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9261#comment:7>
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