For example, I can easily define entry points for arbitrary functions. At run time I can choose which entry point to call and benchmark that entry point using existing performance benchmarking tools like the very powerful and comprehensive "perf" tool on linux. This provides a very powerful way to analyze the performance for free and in a convenient manner with little instrumentation. I do not want the main entry point to be clobbered for such things. Ideally I would just use a simple annotation for any arbitrary function to convert it into an entry point that can be chosen at runtime. I am just giving a general idea here without going into specifics.
-harendra On 12 November 2017 at 21:58, Shea Levy <s...@shealevy.com> wrote: > What would you be able to achieve with this that you couldn't achieve > with branching in a fixed custom main function? > > Thanks, > Shea > > Harendra Kumar <harendra.ku...@gmail.com> writes: > > > Hi, > > > > GHC allows choosing a main function at link time using the "-main-is" > > option. I was wondering if there is a possibility to choose the main > > function at runtime. Or even better, if something equivalent to "ghc -e" > > is somehow possible in a linked binary executable. If not, are there any > > plans to achieve something like that in future? Are there any > theoretical, > > practical obstacles to that? > > > > Thanks, > > Harendra > > _______________________________________________ > > ghc-devs mailing list > > ghc-devs@haskell.org > > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs >
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