diff --git a/src/xrt/auxiliary/util/u_hashmap.cpp b/src/xrt/auxiliary/util/u_hashmap.cpp
index 325f1cd65..7d65135ca 100644
--- a/src/xrt/auxiliary/util/u_hashmap.cpp
+++ b/src/xrt/auxiliary/util/u_hashmap.cpp
@@ -73,6 +73,12 @@ u_hashmap_int_erase(struct u_hashmap_int *hmi, uint64_t key)
 	return 0;
 }
 
+bool
+u_hashmap_int_empty(const struct u_hashmap_int *hmi)
+{
+	return hmi->map.empty();
+}
+
 extern "C" void
 u_hashmap_int_clear_and_call_for_each(struct u_hashmap_int *hmi,
                                       u_hashmap_int_callback cb,
diff --git a/src/xrt/auxiliary/util/u_hashmap.h b/src/xrt/auxiliary/util/u_hashmap.h
index a123e1b26..f9afcf0b5 100644
--- a/src/xrt/auxiliary/util/u_hashmap.h
+++ b/src/xrt/auxiliary/util/u_hashmap.h
@@ -41,6 +41,12 @@ u_hashmap_int_insert(struct u_hashmap_int *hmi, uint64_t key, void *value);
 int
 u_hashmap_int_erase(struct u_hashmap_int *hmi, uint64_t key);
 
+/*!
+ * Is the hash map empty?
+ */
+bool
+u_hashmap_int_empty(const struct u_hashmap_int *hmi);
+
 /*!
  * First clear the hashmap and then call the given callback with each item that
  * was in the hashmap.