39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
// TODO: Remove once desktop is back
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#![allow(unused)]
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macro_rules! id_gen {
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($func_name:ident, $id_name:ident, $ids_name:ident) => {
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static $id_name: std::sync::atomic::AtomicUsize = std::sync::atomic::AtomicUsize::new(0);
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static $ids_name: std::sync::LazyLock<std::sync::Mutex<std::collections::HashSet<usize>>> =
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std::sync::LazyLock::new(|| std::sync::Mutex::new(std::collections::HashSet::new()));
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fn $func_name() -> usize {
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let mut ids = $ids_name.lock().unwrap();
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if ids.len() == usize::MAX {
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panic!("Out of ids");
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}
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let id = loop {
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let new_id = $id_name.fetch_update(
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std::sync::atomic::Ordering::SeqCst,
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std::sync::atomic::Ordering::SeqCst,
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|mut id| {
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while ids.iter().any(|k| *k == id) {
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id += 1;
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}
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id += 1;
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Some(id)
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},
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);
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if let Ok(id) = new_id {
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break id;
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}
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};
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ids.insert(id);
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id
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}
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};
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}
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pub(crate) use id_gen;
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