Just an addendum to my last post - without the .start you can test it better;
(defmacro with-thread [nm & body]
`(let [thread# (Thread. (fn [] (do ~...@body)))]
(if ~nm (.setName thread# ~nm))
;(.start thread#)
thread#))
(def th (with-thread "foo" (println "HasdfasdfasdfasdfasdfasdfasdfasdfI")))
(.start th)
nil
HasdfasdfasdfasdfasdfasdfasdfasdfI
(.getName th)
"foo"
- Adrian.
On Mon, Oct 19, 2009 at 7:18 AM, Adrian Cuthbertson
<adrian.cuthbert...@gmail.com> wrote:
> The following seems to do it;
>
> (defmacro with-thread [nm & body]
> `(let [thread# (Thread. (fn [] (do ~...@body)))]
> (if ~nm (.setName thread# ~nm))
> (.start thread#)
> thread#))
>
> (with-thread "foo" (println "HasdfasdfasdfasdfasdfasdfasdfasdfI"))
> #<Thread Thread[foo,5,main]>
> user=> HasdfasdfasdfasdfasdfasdfasdfasdfI
>
> Also, macroexpand-1 really helps when writing macros. You can see
> exactly how it's being expanded and it's then somewhat easier to
> debug;
>
> (macroexpand-1 '(with-thread nil (println
> "HasdfasdfasdfasdfasdfasdfasdfasdfI"))
> (clojure.core/let [thread__112__auto__ (java.lang.Thread.
> (clojure.core/fn [] (do (println
> "HasdfasdfasdfasdfasdfasdfasdfasdfI"))))] (if nil (.setName
> thread__112__auto__ nil)) (.start thread__112__auto__)
> thread__112__auto__)
>
> Regards, Adrian.
>
> On Mon, Oct 19, 2009 at 6:39 AM, Gorsal <s...@tewebs.com> wrote:
>>
>> So now that the future is working, I'm attempting to print from an
>> actual java thread. Like this
>>
>> (defmacro with-thread [nm & body]
>> `(let [thread# (Thread. #(fn [] (do ~...@body)))]
>> ~@(if nm `((.setName thread# ~nm)))
>> (.start thread#)
>> thread#))
>>
>> (with-thread nil (println "HasdfasdfasdfasdfasdfasdfasdfasdfI"))
>>
>> Except no output! Eeek!!! What am i doing wrong?
>> >>
>>
>
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