linux - 并行运行多个 shell 函数实例

Question

这个问题在这里已经有了答案:





How do you run multiple programs in parallel from a bash script?

(16 个回答)


6 个月前关闭。




我有一个 shell 脚本，如下所示。

#!/bin/bash

myfunc() {
   #do something (call a rest service)
   sleep 300
   status=$(get status of the operation performed above)
   while [ "$status" != "succeeded" ]; do
       #do something (call a rest service)
       sleep 300
       status=$(get status of the operation performed above)
   done
}

a=0

while [ $a -lt 1000 ]
do
   a=`expr $a + 1`
   myfunc
done

在最好的情况下，上面的脚本至少需要 5*1000=5000秒完成运行。
有没有办法让 myfunc调用 parallel 以便我们可以让 while 循环产生 myfunc 的多个正在运行的实例??
注意:不知何故，这个脚本应该等到 myfunc 的所有实例处决完成。

Answer 1

我认为您可以按如下方式更新您的脚本:

#!/bin/bash

myfunc() {
   job_id=$1
   echo "Started job ${job_id}..."

   #do something (call a rest service)
   sleep 300
   status=$(get status of the operation performed above)
   while [ "$status" != "succeeded" ]; do
       #do something (call a rest service)
       sleep 300
       status=$(get status of the operation performed above)
   done

   echo "Terminated job ${job_id}."
}

a=0

while [ $a -lt 1000 ]
do
   echo $a
   a=(($a + 1))
   myfunc $a &
done

wait
echo "Parallel execution terminated."