[Haskell-cafe] Re: all threads are blocked by recvFrom

Simon Marlow simonmarhaskell at gmail.com
Tue Apr 1 13:15:12 EDT 2008

Vitaliy Akimov wrote:
> Hello, I have a problem with building multithreaded UDP server. If
> main thread is waiting for new request in recvFrom all other threads
> are blocked too. I've checked every variant with
> forkIO,forkOS,-threaded etc, nothing's helped.  After reading GHC docs
> I've understood this is happened becouse foreign function call from
> recvFrom (network library) is marked to be unsefe, so it's execution
> blocks every other thread.  How can I resolve it?

Sorry for the late reply.  This will be fixed in GHC 6.8.3:



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