Thar she blows. This works: * **(let [agt (agent nil)] * * * * **(send-off agt * * **(fn [] (println "FINAL > " * * **(with-out-str (**some-function-that-blocks-on-read**))))* * **nil* * **) * * **)* * * * **(println "foobar")*
Danke Schon Tim On Tue, Aug 24, 2010 at 10:17 AM, Mark Rathwell <mark.rathw...@gmail.com>wrote: > > It's not send and send-off that are blocking, it is your (println > "Final"... send expects a function, so it is waiting for "(println..." to > return some function to apply to the agent. > > > On Tue, Aug 24, 2010 at 9:16 AM, Timothy Washington <twash...@gmail.com>wrote: > >> Ok, I have a dumb question here. Using Clojure's concurrency semantics, >> I'm trying to see how to spawn a thread that runs and blocks on input from >> the standard-in. Vars, atoms, agents and refs all seem to deal with >> coordinated / uncoordinated access to blocks of data. >> >> I need i) to call a function (in a thread) that runs and blocks on >> standard input. Then ii) run a thread that spits data to the standard in. I >> tried create an agent with nil data, then sending an update function to the >> agent; but no dice. >> >> *(let [agt (agent nil)] * >> * (send agt ** **;; both send and send-off still block execution - >> (println "foobar") never gets called * >> * (println "FINAL > " * >> * (with-out-str (some-function-that-blocks-on-read )))* >> * nil * >> * ) * >> *)* >> * * >> *(println "foobar") * >> >> >> I want to avoid using Java threads if at all possible. >> >> Hmmm >> Tim >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com<clojure%2bunsubscr...@googlegroups.com> >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com<clojure%2bunsubscr...@googlegroups.com> > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
