wayland: implement wp-drm-lease-v1

src/utils/bindings.rs

@@ -0,0 +1,39 @@
+use {
+    crate::{
+        client::{Client, ClientId},
+        object::{Object, ObjectId},
+        utils::copyhashmap::{CopyHashMap, Locked},
+    },
+    std::rc::Rc,
+};
+
+pub struct Bindings<P> {
+    bindings: CopyHashMap<(ClientId, ObjectId), Rc<P>>,
+}
+
+impl<P> Default for Bindings<P> {
+    fn default() -> Self {
+        Self {
+            bindings: Default::default(),
+        }
+    }
+}
+
+impl<P: Object> Bindings<P> {
+    pub fn add(&self, client: &Client, obj: &Rc<P>) {
+        let prev = self.bindings.set((client.id, obj.id()), obj.clone());
+        assert!(prev.is_none());
+    }
+
+    pub fn remove(&self, client: &Client, obj: &P) {
+        self.bindings.remove(&(client.id, obj.id()));
+    }
+
+    pub fn clear(&self) {
+        self.bindings.clear();
+    }
+
+    pub fn lock(&self) -> Locked<(ClientId, ObjectId), Rc<P>> {
+        self.bindings.lock()
+    }
+}

src/utils/oserror.rs

@@ -163,7 +163,7 @@ static ERRORS: Lazy<&'static [Option<&'static str>]> = Lazy::new(|| {
     res.leak()
 });
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub struct OsError(pub c::c_int);
 
 impl From<Errno> for OsError {