From a666b3a78cf84185647db4e132fe3b39fc5dd0e2 Mon Sep 17 00:00:00 2001
From: Hanbin Lee <hanbin973@gmail.com>
Date: Wed, 8 Jan 2025 14:38:55 -0500
Subject: [PATCH] add GIL release for statistics

---
 python/_tskitmodule.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/python/_tskitmodule.c b/python/_tskitmodule.c
index 8663bd8695..65036e2df1 100644
--- a/python/_tskitmodule.c
+++ b/python/_tskitmodule.c
@@ -9715,9 +9715,11 @@ TreeSequence_weighted_stat_vector_method(
     if (result_array == NULL) {
         goto out;
     }
+	Py_BEGIN_ALLOW_THREADS
     err = method(self->tree_sequence, w_shape[1], PyArray_DATA(weights_array),
         num_windows, PyArray_DATA(windows_array), num_focal_nodes,
         PyArray_DATA(focal_nodes_array), PyArray_DATA(result_array), options);
+	Py_END_ALLOW_THREADS
     if (err != 0) {
         handle_library_error(err);
         goto out;