How to handle in software to solve this block diagram?

Hello everyone:

I have a block diagram as follow. Please help me to solve it.

Code:

---

          DATA
          /    \
          /      \
  BufferA    BufferB
          \    /
          \___/
    ________|
    |        |
    |    Operation
    |        |
 N  |        |
    |      Work
    |________|
            |
          Memory

---

My problem is: I have 2 buffers and they are filled with data consecutively. After one buffer is fulled, the data will be passed and processed in Operation and Work while the other buffer is being filled. It takes 5ms to finish filling each buffer. There may be one Work runs at a time or N Works run at once. Make sure Work and Operation finish the N loop before doing Memory.
I don't know how to handle this problem in C. Any of you may have any solution or suggestion, please tell me. I really appreciate!


CODE TAGS added by Hammer

I added code tags to help keep the layout of your diagram. Try editing your post to fix the slight problems with the format.

I do not fully understand your question. But you could define two pipes to put the data to. When a pipe is full, raise a signal or something like that (depends on your OS) and let the process which processes your data catch the signal and process the data.

Here's a lot of info on IPC and related subjects:
http://www.cs.cf.ac.uk/Dave/C/

Hi Shiro,

Thank you for responding. Your answer helps me to solve the first problem. My second problem is how to handle the loop N. Example, I have 1 Work runs at a time or 4 Works run in parallel. I don't know how to handle when the N loop is done so I can keep going to Memory operation. How to check if the N loop ends with a generic way. Thank you very much!

P.S. Thank you very much Hammer for editting my post.

For running more than one thing at a time, check out the threads information on the link Shiro gave you.