execute a function in a detached process and exit

run_forked.rs

// fork = "0.1"
use fork::{self, Fork};
use std::process;

/// no error handling, no logging, just one shot to run in a forked process
fn run_forked<R>(f: fn() -> R) -> bool
{
    match fork::fork() {
        Ok(Fork::Parent(_)) => {
            // we're in the parent process, must have forked successfully
            return true;
        },
        Ok(Fork::Child) => {
            // we're in the child process
            fork::setsid().unwrap();  // YOLO: just panic
            f();
            process::exit(0);
        },
        Err(_) => {
            // failed to fork
            return false;
        }
    }
}