Fork

---

• fork

examples/other/show-forking/Cargo.toml

[package]
name = "show-forking"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
fork = "0.1.22"

examples/other/show-forking/src/main.rs

use fork::{fork, Fork};

fn main() {
    println!("Before {}", std::process::id());

    match fork() {
        Ok(Fork::Parent(child)) => {
            println!(
                "In parent process {}, new child has pid: {}",
                std::process::id(),
                child
            );
        }
        Ok(Fork::Child) => {
            println!("In child process {}", std::process::id());
            std::process::exit(0);
        }
        Err(_) => println!("Fork failed"),
    }
    println!("Launched {}", std::process::id());

    println!("After  {}", std::process::id());
}

TODO: wait, waitpid?