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single/
single.rs

1fn main() {
2    match std::env::args().nth(1).as_deref() {
3        Some("--wait-parent") => {
4            // std::thread::sleep(std::time::Duration::from_secs(5));
5
6            println!("Waiting parent...");
7            let status = wait_parent::wait_parent();
8
9            println!("Parent exited with {:?}", status);
10            // std::fs::write("status.txt", format!("{:?}", status)).unwrap();
11
12            const STATUS_CONTROL_C_EXIT: i32 = 0xC000013Au32 as i32;
13            match status.and_then(|s| s.code()) {
14                Some(0 | STATUS_CONTROL_C_EXIT) => (),
15                Some(_) | None => {
16                    // std::process::Command::new(std::env::current_exe().unwrap())
17                    //     .spawn()
18                    //     .unwrap();
19
20                    std::thread::sleep(std::time::Duration::from_secs(5));
21                    println!("Child exiting...");
22                }
23            }
24        }
25        Some(_) => unreachable!(),
26        None => {
27            println!("Spwaning child...");
28            std::process::Command::new(std::env::current_exe().unwrap())
29                .arg("--wait-parent")
30                .spawn()
31                .unwrap();
32
33            std::thread::sleep(std::time::Duration::from_secs(3));
34
35            // panic!();
36        }
37    }
38}