Please Suggest a option for parallel communication between 2 subroutine.

I need to start a 2nd subroutine operation at middle of subroutine A and want to run parallel with subroutine A. ALso Subroutine B need to stop at the completion of Subroutine A.

I tried to fork the process in Subroutine A and called the subroutine B from the child but didn't worked. 

Sub A {

1.
2.
3. &sub B();
4.
5.}

Sub B {
1.
2.
3.
4.
5.
}

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In reply to How to create a parallel communication with 2 subroutine by romy_mathew

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