当使用“lein run”运行时，关闭挂钩不触发。 [英] shutdown hook doesn't fire when running with "lein run"

问题描述

我有以下代码：

 （ns test-hook.core）
 
（defn -main [] 
（.addShutdownHook（Runtime / getRuntime）（Thread。＃（printlnshutdown）））
（printlnstart）
 （doseq [i（range 1 6）] 
（Thread / sleep 1000）
（println i）））
  

和以下project.clj

 （defproject test- hook1.0.0-SNAPSHOT
：aot：all 
：main test-hook.core 
：descriptionFIXME：write description
：dependencies [[org.clojure / clojure1.2.0]]）
  

当我运行lein run钩子仅在正常程序执行时执行，而不是在接收SIGINT（Ctrl-C）

时运行相同的代码，在lein外部成功执行关闭钩子，即使接收到SIGINT 。

如何使用Ctrl-C运行时执行关闭挂接？

  lein trampoline run 
  

似乎适合我。

AFAIKlein trampoline不嵌套JVM，因此您的Ctrl-C不会被leiningen捕获，而是由您的代码捕获。

I have the following code:

(ns test-hook.core)

(defn -main []
  (.addShutdownHook (Runtime/getRuntime) (Thread. #(println "shutdown")))
  (println "start")
  (doseq [i (range 1 6)]
    (Thread/sleep 1000)
    (println i)))

and the following project.clj

(defproject test-hook "1.0.0-SNAPSHOT"
  :aot :all
  :main test-hook.core
  :description "FIXME: write description"
  :dependencies [[org.clojure/clojure "1.2.0"]])

when I run it with "lein run" the shutdown hook only gets executed on normal program execution, not when receiving SIGINT (Ctrl-C)

the same code when ran outside of lein successfully executes the shutdown hook even when receiving SIGINT.

how can I have the shutdown hook executed when running from lein and aborting with Ctrl-C?

解决方案

Have you tried running it with trampoline?

lein trampoline run

Seems to work for me.

AFAIK "lein trampoline" doesn't nest the JVM, so your Ctrl-C isn't caught by leiningen, but by your code.

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