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@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 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

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