Shared via Rust Playground

playground.rs

#[post("/tablet-reg-mode-status")]
fn reg_mode_status() -> Res<bool> {
	ok(REGISTER_MODE.load(Ordering::Relaxed))
}

#[post("/tablet-reg-mode-toggle")]
fn reg_mode_toggle(_me: Admin) -> Res<bool> {
    for {
	    let old = REGISTER_MODE.load(Ordering::SeqCst);
	    let new = !old;
	    if REGISTER_MODE.compare_and_swap(old, new, Ordering::SeqCst) {
	        break;
	    }
	}
	ok(reg)
}

use std::sync::atomic::{AtomicBool, Ordering};
lazy_static! {
    static ref REGISTER_MODE: AtomicBool = AtomicBool::new(false);
}