From 74e7cf3f4664204927b2bd3dd9facc2ac7649715 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Charles-Fran=C3=A7ois=20Natali?= <cf.natali@gmail.com>
Date: Thu, 5 Dec 2013 22:47:19 +0100
Subject: [PATCH] Issue #19850: asyncio: Set SA_RESTART when registering a
 signal handler to limit EINTR occurrences.

---
 Lib/asyncio/unix_events.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py
index b611efd17d1..eb3fb9f91c0 100644
--- a/Lib/asyncio/unix_events.py
+++ b/Lib/asyncio/unix_events.py
@@ -74,6 +74,8 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop):
 
         try:
             signal.signal(sig, self._handle_signal)
+            # Set SA_RESTART to limit EINTR occurrences.
+            signal.siginterrupt(sig, False)
         except OSError as exc:
             del self._signal_handlers[sig]
             if not self._signal_handlers: