realtime programming (c)
 

hi

we create a real-time program on a embedded linux system.
the program will run a few time by second

i would like to know if it's better to create global variable or create the variable in the main and pass it to the function?

thanks

Id make it global to save time restoring the stack when you bounce back from your rt routine. I'm assuming your rt routine is effectively an interrupt handler?

we have 3 program, two use interrupt handler but the last use only a sleep... this last program take some data of the others program and generate statistic...