如何在Clojure中看到我的STM回滚的数量？ [英] How can I see the number of rollbacks in my STM in Clojure?

问题描述

如何查看Clojure中我的STM回滚的次数？

How can I see the number of rollbacks in my STM in Clojure?

推荐答案

你愿意欺骗：

(defmacro spy-dosync [& body]
  `(let [retries# (atom -1)
         result# (dosync
                   (swap! retries# inc)
                   ~@body)]
     (println "retries count:" @retries#)
     result#))

然后用spy-dosync替换dosync。

and then replace your dosync by a spy-dosync.

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