[Haskell-cafe] Re: I/O system brokenness with named pipes

Simon Marlow simonmarhaskell at gmail.com
Wed Apr 16 19:02:59 EDT 2008

Donn Cave wrote:

> I have run into this problem, with Network.Socket (socket).  If I 
> remember right,
> ktrace showed me what was happening.  This isn't my favorite thing about 
> Haskell.
> Is there even a means provided to set it back to blocking?

There isn't a way right now to open a file using a blocking FD, however 
the IO library does support using blocking FDs (the std handles are left 
in blocking mode to avoid causing problems with pipes).  We could 
certainly add an interface to let you open files in blocking mode - just 
submit a feature request via GHC's Trac and we'll try to get around to 
it (or better still, send us a patch... the code is in 


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