Question

How can I start a new process in C? I tried with fork(), but I wish to call some functions in the new process. I have done some googling but couldn’t find proper information on what’s better: fork(), vfork(), exec() or clone(). If you permit another quick question, how can I start new thread?

Answer 1

Check the example on Wikipedia; basically, after you fork you have to check the pid to understand if you are in the parent or child process.

if (pid == 0) { // child process
    call_child_function();
} else { //parent process
    call_parent_function();
}