On Sun, May 27, 2007 at 12:22:54PM +0200, Joachim Breitner wrote: > Hi, > > Am Samstag, den 26.05.2007, 14:29 +0200 schrieb Tomasz Zielonka: > > On Fri, May 25, 2007 at 07:57:45PM +0200, Joachim Breitner wrote: > > > I???m writing a TCP server app ATM. It has one thread per client. Some of > > > the clients want to be notified if the internal state changes, while > > > others are happily chatting with the server, possible modifying the > > > internal state. What I need now is a way for the chatting thread to > > > signal ???anyone interested??? that the state has changed. > > > > Did you consider using STM for thread synchronisation and communication? > > STM uses change notifications (or something similar) internally to > > implement the "retry" operation. I might be just what you need, but more > > high level. Of course it is not "I" that you might need, but "It" - the STM :-) Writing "I" instead of "It" is one of the most frequent errors I make when writing in english - perhaps a sign of egocentrism...?
> No, I haven???t done anything with STM yet. Maybe I???ll look into that. If your threads just wait until the server state satisfies some condition, then STM should fit naturally. Best regards Tomek _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
