[GHC] #7670: StablePtrs should be organized by generation for efficient minor collections

[GHC]

#7670: StablePtrs should be organized by generation for efficient minor
collections
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        Reporter:  ezyang            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  7.7
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by dfeuer):

 Another thing: we don't really want to have to allocate memory dynamically
 for the nursery hash table. Ideally, it would be backed by a fixed array
 to avoid memory management overhead. The non-nursery hash table can be a
 bit more expensive to maintain, since it only gets replaced during major
 collections.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7670#comment:18>
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