25 May
2010
25 May
'10
7:31 a.m.
On Tuesday 25 May 2010 12:35:38, Benjamin Edwards wrote:
Having read this<http://haskell.org/ghc/docs/6.12.1/html/libraries/base-4.2.0.0/Cont rol-Concurrent.html>page a bit more I think I understand why the prgram was blocking, but if I compile with -threaded surely the readChan function shouldn't prevent the producer from producing?
I'm afraid that is not so, "The downside of having lightweight threads is that only one can run at a time" and I compiled the original with -threaded and got: $ ./chanTest +RTS -N2 chanTest: thread blocked indefinitely in an MVar operation