From daaf8bdc7007ad8d567d01e23e05989142295fe1 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Fri, 6 Mar 2020 12:30:19 +1000
Subject: [PATCH] release the GIL during a DB request

---
 rspy/src/lib.rs | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/rspy/src/lib.rs b/rspy/src/lib.rs
index 78b222c88..8d74ed3c9 100644
--- a/rspy/src/lib.rs
+++ b/rspy/src/lib.rs
@@ -76,11 +76,12 @@ impl Backend {
 
     fn db_command(&mut self, py: Python, input: &PyBytes) -> PyResult<PyObject> {
         let in_bytes = input.as_bytes();
-        let out_string = self
-            .backend
-            .db_command(in_bytes)
-            .map_err(|e| DBError::py_err(e.localized_description(&self.backend.i18n())))?;
-
+        let out_res = py.allow_threads(move || {
+            self.backend
+                .db_command(in_bytes)
+                .map_err(|e| DBError::py_err(e.localized_description(&self.backend.i18n())))
+        });
+        let out_string = out_res?;
         let out_obj = PyBytes::new(py, out_string.as_bytes());
         Ok(out_obj.into())
     }