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56 lines
1.2 KiB
Clojure
56 lines
1.2 KiB
Clojure
;; This Source Code Form is subject to the terms of the Mozilla Public
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;; License, v. 2.0. If a copy of the MPL was not distributed with this
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;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
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;;
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;; Copyright (c) 2020 Andrey Antukh <niwi@niwi.nz>
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(ns app.util.async
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(:require
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[clojure.core.async :as a]
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[clojure.spec.alpha :as s])
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(:import
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java.util.concurrent.Executor))
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(defmacro go-try
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[& body]
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`(a/go
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(try
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~@body
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(catch Exception e# e#))))
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(defmacro <?
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[ch]
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`(let [r# (a/<! ~ch)]
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(if (instance? Exception r#)
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(throw r#)
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r#)))
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(defmacro thread-try
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[& body]
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`(a/thread
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(try
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~@body
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(catch Exception e#
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e#))))
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(s/def ::executor #(instance? Executor %))
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(defn thread-call
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[^Executor executor f]
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(let [c (a/chan 1)]
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(try
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(.execute executor
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(fn []
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(try
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(let [ret (try (f) (catch Exception e e))]
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(when-not (nil? ret)
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(a/>!! c ret)))
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(finally
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(a/close! c)))))
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c
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(catch java.util.concurrent.RejectedExecutionException e
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(a/offer! c e)
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(a/close! c)
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c))))
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