Is there a way for me to allow two programs run concurrently?
One program updates the text in a file every so often. The other program is suppose to print a certain message based on what is in the text file. Since I want it to be as accurate as possible, I want the second program to be interrupted as soon as the first program changes the text file, so that the second file prints the most up to date message. Is there an interrupt that is offered by either software or hardware?