utils: Adding additional helpers

src/utils/ids.rs

@@ -0,0 +1,41 @@
+// TODO: Remove once desktop is back
+#![allow(unused)]
+
+macro_rules! id_gen {
+    ($func_name:ident, $id_name:ident, $ids_name:ident) => {
+        static $id_name: std::sync::atomic::AtomicUsize = std::sync::atomic::AtomicUsize::new(0);
+        lazy_static::lazy_static! {
+            static ref $ids_name: std::sync::Mutex<std::collections::HashSet<usize>> =
+                std::sync::Mutex::new(std::collections::HashSet::new());
+        }
+
+        fn $func_name() -> usize {
+            let mut ids = $ids_name.lock().unwrap();
+            if ids.len() == usize::MAX {
+                panic!("Out of ids");
+            }
+
+            let id = loop {
+                let new_id = $id_name.fetch_update(
+                    std::sync::atomic::Ordering::SeqCst,
+                    std::sync::atomic::Ordering::SeqCst,
+                    |mut id| {
+                        while ids.iter().any(|k| *k == id) {
+                            id += 1;
+                        }
+                        id += 1;
+                        Some(id)
+                    },
+                );
+                if let Ok(id) = new_id {
+                    break id;
+                }
+            };
+
+            ids.insert(id);
+            id
+        }
+    };
+}
+
+pub(crate) use id_gen;