bpo-23846: Fix ProactorEventLoop._write_to_self() (GH-11566)
asyncio.ProactorEventLoop now catchs and logs send errors when the
self-pipe is full: BaseProactorEventLoop._write_to_self() now catchs
and logs OSError exceptions, as done by
BaseSelectorEventLoop._write_to_self().
diff --git a/Lib/asyncio/proactor_events.py b/Lib/asyncio/proactor_events.py
index 3a1826e..a849be1 100644
--- a/Lib/asyncio/proactor_events.py
+++ b/Lib/asyncio/proactor_events.py
@@ -636,7 +636,13 @@
f.add_done_callback(self._loop_self_reading)
def _write_to_self(self):
- self._csock.send(b'\0')
+ try:
+ self._csock.send(b'\0')
+ except OSError:
+ if self._debug:
+ logger.debug("Fail to write a null byte into the "
+ "self-pipe socket",
+ exc_info=True)
def _start_serving(self, protocol_factory, sock,
sslcontext=None, server=None, backlog=100,
diff --git a/Misc/NEWS.d/next/Library/2019-01-15-13-31-30.bpo-23846.LT_qL8.rst b/Misc/NEWS.d/next/Library/2019-01-15-13-31-30.bpo-23846.LT_qL8.rst
new file mode 100644
index 0000000..788f092
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2019-01-15-13-31-30.bpo-23846.LT_qL8.rst
@@ -0,0 +1,2 @@
+:class:`asyncio.ProactorEventLoop` now catchs and logs send errors when the
+self-pipe is full.