Conversion between STRef RealWorld and IORef

John Lato jwlato at gmail.com
Wed Dec 3 18:13:28 UTC 2014


AFAIUI wrapping in an IORef constructor then calling mkWeakIORef simply to
add a finalizer should be fine.

On Tue Dec 02 2014 at 5:12:24 AM Wolfgang Jeltsch <
g9ks157k at acme.softbase.org> wrote:

> Hi,
>
> my STRefs have the RealWorld parameter. For now, I do not unpack the
> STRefs, but wrap them with the IORef constructor and use mkWeakIORef on
> the resulting IORef. I guess this should be sane. Is there any reason
> why this should not work?
>
> All the best,
> Wolfgang
>
> Am Montag, den 01.12.2014, 21:21 +0000 schrieb John Lato:
> > Really a function like mkWeakIORef should be exposed for STRef's. I
> > know there's supposed to be a patch to normalize various weak'ish
> > things (ekmett?), maybe that function could be added at the same
> > time.
> >
> > Until then, I would suggesy unpacking the STRef to get at the
> > underlying MutVar#, and copy the IORef code (which IIRC also works on
> > MutVar#) to write the function yourself.
> >
> > John L.
> >
> > On 07:56, Mon, Dec 1, 2014 Wolfgang Jeltsch
> > <g9ks157k at acme.softbase.org> wrote:
> >         Hi,
> >
> >         I need to convert values of types STRef RealWorld a to IORef a
> >         in order
> >         to attach finalizers to them. For now, I am using GHC.IORef
> >         for this. Is
> >         there a better way to achieve what I want?
> >
> >         All the best,
> >         Wolfgang
> >
> >         _______________________________________________
> >         Libraries mailing list
> >         Libraries at haskell.org
> >         http://www.haskell.org/mailman/listinfo/libraries
>
> _______________________________________________
> Libraries mailing list
> Libraries at haskell.org
> http://www.haskell.org/mailman/listinfo/libraries
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.haskell.org/pipermail/libraries/attachments/20141203/fbe24c5b/attachment.html>


More information about the Libraries mailing list