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package main
import (
"log"
"time"
)
func f() {
defer timeoutCheck("f slow", time.Now())
time.Sleep(time.Second)
}
func timeoutCheck(tag string, start time.Time) {
dis := time.Since(start).Seconds()
if dis > 1 {
log.Println(tag, dis, "s")
}
}
func main() {
f()
}
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原文地址：http://www.cnblogs.com/moxiaopeng/p/4736951.html
