1 files changed, 21 insertions, 0 deletions
diff --git a/src/rpc/layout/tracker.rs b/src/rpc/layout/tracker.rs
new file mode 100644
index 00000000..778121e4
--- /dev/null
+++ b/src/rpc/layout/tracker.rs
@@ -0,0 +1,21 @@
+use super::*;
+
+impl UpdateTracker {
+	fn merge(&mut self, other: &UpdateTracker) {
+		for (k, v) in other.0.iter() {
+			if let Some(v_mut) = self.0.get_mut(k) {
+				*v_mut = std::cmp::max(*v_mut, *v);
+			} else {
+				self.0.insert(*k, *v);
+			}
+		}
+	}
+}
+
+impl UpdateTrackers {
+	pub(crate) fn merge(&mut self, other: &UpdateTrackers) {
+		self.ack_map.merge(&other.ack_map);
+		self.sync_map.merge(&other.sync_map);
+		self.sync_ack_map.merge(&other.sync_ack_map);
+	}
+}