diff --git a/libs/ardour/ardour/session_event.h b/libs/ardour/ardour/session_event.h
index 417c8427d0..956495cb9e 100644
--- a/libs/ardour/ardour/session_event.h
+++ b/libs/ardour/ardour/session_event.h
@@ -148,6 +148,7 @@ public:
 	static bool has_per_thread_pool ();
 	static void create_per_thread_pool (const std::string& n, uint32_t nitems);
 	static void init_event_pool ();
+	static guint pool_available ();
 
 	CrossThreadPool* event_pool() const { return own_pool; }
 
diff --git a/libs/ardour/session_events.cc b/libs/ardour/session_events.cc
index d52c88e2bc..1225022175 100644
--- a/libs/ardour/session_events.cc
+++ b/libs/ardour/session_events.cc
@@ -43,6 +43,15 @@ SessionEvent::init_event_pool ()
 	pool = new PerThreadPool;
 }
 
+guint
+SessionEvent::pool_available ()
+{
+	if (!pool || !pool->per_thread_pool (false)) {
+		return 0;
+	}
+	return pool->per_thread_pool()->available ();
+}
+
 bool
 SessionEvent::has_per_thread_pool ()
 {