Thanks Gregory! Probably the solution would be recreating the FFI in a way that doesn't need the StablePtr. Not sure how to do this though. I'm going to test other things, like HashTable, before trying this. And let's see how it goes.
~dsouza On Mon, Dec 20, 2010 at 2:40 PM, Gregory Collins <g...@gregorycollins.net>wrote: > Pointers are mapped to StablePtrs using.... *drumroll* a hash table, > so you can give up on getting acceptable performance out of this > combination IMO. > > G > > On Mon, Dec 20, 2010 at 5:06 PM, Diego Souza <dso...@bitforest.org> wrote: > > Hello Haskellers, > > I'm playing a bit with Data.Judy. However, I noticed that using StablePtr > > incurs in some performance problems, I don't have any numbers but as a > > example use Int and ByteString as values and you can notice the > difference > > without any benchmarking tool with the example that comes in the > > documentation. > > The question that I have is: is there any way to make it faster for types > > other than those that fits in word size? I understand that the way the > > binding to the C code has been done, stableptr is required. Am I wrong > > assuming this? I would be happy to submit a patch but I failed to find a > way > > to improve the performance. > > The second question is what is a common practice to avoid memory leaks > with > > StablePtr? I have zero experience programming with the Haskell FFI > > interface, so probably the most basic stuff would help me a lot in this > > case. > > > > Thanks in advance, > > -- > > ~dsouza > > yahoo!im: paravinicius > > gpg key fingerprint: 71B8 CE21 3A6E F894 5B1B 9ECE F88E 067F E891 651E > > gpg pub key: http://bitforest.org/~dsouza/pub/gpg-pubkey.txt > > authorized_keys: http://bitforest.org/~dsouza/pub/authorized_keys.txt > > > > _______________________________________________ > > Haskell-Cafe mailing list > > Haskell-Cafe@haskell.org > > http://www.haskell.org/mailman/listinfo/haskell-cafe > > > > > > > > -- > Gregory Collins <g...@gregorycollins.net> > -- ~dsouza yahoo!im: paravinicius gpg key fingerprint: 71B8 CE21 3A6E F894 5B1B 9ECE F88E 067F E891 651E gpg pub key: http://bitforest.org/~dsouza/pub/gpg-pubkey.txt authorized_keys: http://bitforest.org/~dsouza/pub/authorized_keys.txt
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