[GHC] #13529: eventlog to report more information about stopping threads because of FFI calls

[GHC]

#13529: eventlog to report more information about stopping threads because of FFI
calls
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        Reporter:  varosi            |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Profiling         |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:  x86_64
                                     |  (amd64)
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by varosi):

 I'm not aware of GHC architecture and cannot help with actual
 implementation much.

 If there are many foreign calls or we're using third-party libraries, like
 wxHaskell - it will be hard to place traceEvent everywhere. Automated
 adding of such traceEvent could be very helpful, i.e. automated
 instrumentation.

 About DWARF - there is no DWARF support under Windows, so this limit
 debugging capabilities.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13529#comment:2>
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