Comments (2)
implemented in b.38
from missionary.
The main motivation for this change is to allow relieved pipelines to work with multiple writer threads. Previously, the following implementation of watch
could fail during concurrent writes. As of now, the later thread will be blocked briefly while the earlier thread performs the transfer.
(def watch
(let [w (fn [! _ _ _] (! nil))]
(fn [!x]
(->> (fn [!]
(add-watch !x ! w)
#(remove-watch !x !))
(m/observe)
(m/relieve)
(m/reductions
(fn ([] @!x)
([_ _] @!x)))))))
from missionary.
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from missionary.