data exchange between two binary code
 

Dear Friends,

I like to execute two binary code simulteneously and exchange some data between them dynamically, they write exchanged data on disk.

my problem is tunig of codes so thay they access to disk is a suitable time, (e.g. they can paused by reading a parameter from command line and after entering parameter they continue, but performing this by hand is tedious) do you know a suitable (simple) software/way for this purpose?