gh-94637: Release GIL in SSLContext.set_default_verify_paths (GH-94658)

diff --git a/Misc/NEWS.d/next/Library/2022-07-07-15-46-55.gh-issue-94637.IYEiUM.rst b/Misc/NEWS.d/next/Library/2022-07-07-15-46-55.gh-issue-94637.IYEiUM.rst
new file mode 100644 (file)
index 0000000..20cbbcd
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2022-07-07-15-46-55.gh-issue-94637.IYEiUM.rst
@@ -0,0 +1,3 @@
+:meth:`SSLContext.set_default_verify_paths` now releases the GIL around
+``SSL_CTX_set_default_verify_paths`` call. The function call performs I/O
+and CPU intensive work.

diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 8ff15d18fb637ec864a69c81deb3e29da7a2e595..78c02c1cd82fb532eead181603c878a005e3e7c9 100644 (file)
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -4302,7 +4302,11 @@ static PyObject *
 _ssl__SSLContext_set_default_verify_paths_impl(PySSLContext *self)
 /*[clinic end generated code: output=0bee74e6e09deaaa input=35f3408021463d74]*/
 {
-    if (!SSL_CTX_set_default_verify_paths(self->ctx)) {
+    int rc;
+    Py_BEGIN_ALLOW_THREADS
+    rc = SSL_CTX_set_default_verify_paths(self->ctx);
+    Py_END_ALLOW_THREADS
+    if (!rc) {
         _setSSLError(get_state_ctx(self), NULL, 0, __FILE__, __LINE__);
         return NULL;
     }