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

3 Jul 2014

      #9261: -S prints incorrect number of bound tasks
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       Reporter:  edsko             |             Owner:
           Type:  bug               |            Status:  new
       Priority:  low               |         Milestone:
      Component:  Compiler          |           Version:  7.8.2
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:                    |
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 In `Stats.c` we have:

 {{{
             statsPrintf("  TASKS: %d (%d bound, %d peak workers (%d
 total), using -N%d)\n",
                         taskCount, taskCount - workerCount,
                         peakWorkerCount, workerCount,
                         n_capabilities);
 }}}

 but I think `taskCount - workerCount` must be wrong, because `taskCount`
 is the _current_ number of tasks, while `workerAcount` is the _total_
 number of workers (accumulating). I think it should be:

 {{{
             statsPrintf("  TASKS: %d (%d bound, %d peak workers (%d
 total), using -N%d)\n",
                         taskCount, taskCount - currentWorkerCount,
                         peakWorkerCount, workerCount,
                         n_capabilities);
 }}}

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9261
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