Issue #22054: Add os.get_blocking() and os.set_blocking() functions to get and

set the blocking mode of a file descriptor (False if the O_NONBLOCK flag is
set, True otherwise). These functions are not available on Windows.

1 files changed, 8 insertions, 1 deletions

diff --git a/Include/fileutils.h b/Include/fileutils.h
index e9bad80b87..f2a43f75c4 100644
--- a/Include/fileutils.h
+++ b/Include/fileutils.h
@@ -70,7 +70,14 @@ PyAPI_FUNC(int) _Py_set_inheritable(int fd, int inheritable,
                                     int *atomic_flag_works);
 
 PyAPI_FUNC(int) _Py_dup(int fd);
-#endif
+
+#ifndef MS_WINDOWS
+PyAPI_FUNC(int) _Py_get_blocking(int fd);
+
+PyAPI_FUNC(int) _Py_set_blocking(int fd, int blocking);
+#endif   /* !MS_WINDOWS */
+
+#endif   /* Py_LIMITED_API */
 
 #ifdef __cplusplus
 }