Orandja register

An asyncronous, in memory, software level register.

Usage

orandja_register = { git = "https://github.com/Orandja/register" }

//create a register of max 5 strings
let reg = std::sync::Arc::new(Register::<String>::new(5));

// Registering "Hello", "World". Give indexes
let index_1 = reg.register("Hello".into()).unwrap(); // index_1 == 0
let index_2 = reg.register("World".into()).unwrap(); // index_2 == 1

// deregister "Hello"
let _deregister: Option<String> = reg.deregister(&index_1).unwrap();

// pass register to thread
let reg_clone = reg.clone();
thread::spawn(move || {
    // hold a read lock to "World"
    // until drop(hold). `reg` is unable to register/deregister
    let hold = reg_clone.hold(&index_2).unwrap();
    assert_eq!(Some("World".to_string()), *hold2);
    thread::sleep_ms(20);
    drop(hold); // unnesesary, just to demonstrate
});

thread::sleep_ms(10);
// Wait until thread drop hold2
// deregister index_2
reg.deregister(&index_2).unwrap();