For a fortran program are there any extensions (or even possible with Fortran standard) that can pause a program during execution and wait for a signal from an external source to resume execution.
My assumption is that the EXECUTE_COMMAND_LINE could work for running a separate program, but I would ideally like to have two separate programs that run in parallel and pause to communicate with each other when there is a needed information exchange. I could do binary files that one program waits for the other to update, but is there any way to send an electronic signal or even pass arrays within memory (RAM) or does that only work with subordinate programs compiled as dll?