Re: Proposed change to ForeignPtr

George Russell <ger@tzi.de> writes:

However in the case I cited it isn't particularly important to execute the callback at once. If calling Haskell at arbitrary times is unimplementable, could there instead be some way of some way like "wrapper" of exporting a Haskell function[args] -> IO () so that the resulting C function, when executed, merely registers the Haskell action to be executed as soon as the Haskell RTS finds it convenient, rather than at once?

This was the originally proposed solution for re-entrant finalisers in nhc98 and Hugs. The problem is that, certainly for nhc98, it is nigh impossible for the RTS to identify a "convenient" later moment at which to run the delayed finaliser. Regards, Malcolm