From: Steve Dower <steve.dower@microsoft.com>
Date: Mon, 18 Jul 2016 03:49:38 +0000 (-0700)
Subject: Issue #27533: Release GIL in nt._isdir
X-Git-Tag: v3.6.0a4~154^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b22a67737ea20f8646540903d32149ed7d5af3eb;p=python

Issue #27533: Release GIL in nt._isdir
---

diff --git a/Misc/NEWS b/Misc/NEWS
index 714bf6a257..ad0eafa70d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -28,6 +28,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #27533: Release GIL in nt._isdir
+
 - Issue #17711: Fixed unpickling by the persistent ID with protocol 0.
   Original patch by Alexandre Vassalotti.
 
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 3c3f80660c..ee600fc237 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -3878,10 +3878,12 @@ os__isdir_impl(PyObject *module, path_t *path)
 {
     DWORD attributes;
 
+    Py_BEGIN_ALLOW_THREADS
     if (!path->narrow)
         attributes = GetFileAttributesW(path->wide);
     else
         attributes = GetFileAttributesA(path->narrow);
+    Py_END_ALLOW_THREADS
 
     if (attributes == INVALID_FILE_ATTRIBUTES)
         Py_RETURN_FALSE;