Finalizers: the Legend that Won't Die
Malcolm.Wallace at cs.york.ac.uk
Thu Feb 27 12:45:24 EST 2003
George Russell <ger at tzi.de> writes:
> Is it safe to run runFinalizers anywhere except in the main IO trunk?
This is the first question that occurred to me too.
> x = seq (unsafePerformIO runFinalizers) y
> finalizer = [... something involving x ...]
> Otherwise you always have the risk of coming a cropper on blackholed values,
> don't you?
But isn't this just the same as any other program that contains a
blackhole fault? i.e. the program is logically incorrect. What is
more, the runtime system will probably tell you "Blackhole detected!"
or "<<loop>>" or something, which is helpful.
So I don't see why this sort of program would become particularly
more common than it currently is, if the runFinalizers() procedure
is added to the FFI spec.
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