Hi all,
do you have any idea how I can define a variable, global or inside a
function, used to store for example the FutureTask objects resulted from
ExecutorService submit(fn) call,I want to put all futures in a collection
and later call 'get' on each of them. bellow is a sample of that code:
(defn sample-fc
[]
(def futures '())
(dotimes [i 3]
(def f (. thread-pool (submit (fn [] ("task result !!!")))))
(cons f futures)
)
"shutdown the pool"
(. thread-pool shutdown)
(. thread-pool awaitTermination (. Long MAX_VALUE) (. TimeUnit SECONDS))
"go through all futures an call get on them"
(doseq [f futures]
(println (. f get))
)
)
when I do 'dosync' futures collection is empty, even if (def f (.
thread-pool (submit (fn [] ("task result !!!"))))) is a a non empty object
of type FutureTask(java.util.concurrent package).
Do you know how to define 'futures' variable such that to keep all returned
future ?
thanks,
Sorin
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