并行运行 shell 函数的多个实例[重复]

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。

有没有办法使myfunc调用并行，以便我们可以让 while 循环生成多个正在运行的实例myfunc??

注意：不知何故，这个脚本应该等到所有实例myfunc处决已完成。

我认为你可以按如下方式更新你的脚本：

#!/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."