On 21 November 2005 10:16, Joel Reymont wrote:
Is Wolfgang still around?
Would you guys be willing to guide me through this? I could then possibly become the next Mac OSX expert :-).
I have the disassembler dumps, etc. I do not know how to approach this problem. I read up a bit on the GHC internals, STG, code generation, etc.
If anyone is interested, this turned out to be a bug in the Network.BSD module, namely that getHostByName isn't thread safe because it is based on the C library function gethostbyname(), which returns data in a single static area. Workarounds are: - do your own mutual exclusion locking around getHostByName and any function that calls it (eg. connectTo). - use Network.Alt (http://www.cs.helsinki.fi/u/ekarttun/network-alt/), which has a thread-safe implementation of getHostByName. - wait for 6.4.2, which will contain a fix for this bug (we don't have a fix committed yet, Einar Karttunen has kindly offered to look into it). Cheers, Simon