1. I see no attempt in your minimal pseudo-code to explain when & where & what you want the two subroutines to communicate?

    Should B communicate to A? Or A to B? Or both ways?

    And what should be communicated?

  2. You say "ALso Subroutine B need to stop at the completion of Subroutine A."

    Is that what you mean by communicate? Should A somehow tell B to stop what is it doing when A is about to end?

    What will B be doing when it is asked to end? Waiting for the communication? Or in the middle of something that can be abandoned?

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

    Unless you show us what you actually tried; and how it failed to meet your expectations, how can we suggest where the cause was because you implemented your approach incorrectly; or because the approach itself could never succeed?

As is, any attempt to answer your question will be based soley on speculation as to your meaning and goals. It could only be correct by luck.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

In reply to Re: How to create a parallel communication with 2 subroutine by BrowserUk
in thread How to create a parallel communication with 2 subroutine by romy_mathew

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