process_raw_handle.rs

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#![warn(rust_2018_idioms)]

#![cfg(feature = "full")]

#![cfg(windows)]

use tokio::process::Command;

use windows_sys::Win32::System::Threading::GetProcessId;

#[tokio::test]

async fn obtain_raw_handle() {

    let mut cmd = Command::new("cmd");

    cmd.kill_on_drop(true);

    cmd.arg("/c");

    cmd.arg("pause");

    let child = cmd.spawn().unwrap();

    let orig_id = child.id().expect("missing id");

    assert!(orig_id > 0);

    let handle = child.raw_handle().expect("process stopped");

    let handled_id = unsafe { GetProcessId(handle as _) };

    assert_eq!(handled_id, orig_id);