From 0237265e8287141c40faa8719da3a2d21d511d0d Mon Sep 17 00:00:00 2001 From: Andrew Svetlov Date: Sat, 15 Jun 2019 14:05:35 +0300 Subject: [PATCH] Use threadpool for reading from file in sendfile fallback mode (#14076) --- Lib/asyncio/base_events.py | 2 +- .../next/Library/2019-06-14-13-30-47.bpo-37280.Fxur0F.rst | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) create mode 100644 Misc/NEWS.d/next/Library/2019-06-14-13-30-47.bpo-37280.Fxur0F.rst diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py index 90de8587a3..14b80bdda9 100644 --- a/Lib/asyncio/base_events.py +++ b/Lib/asyncio/base_events.py @@ -1141,7 +1141,7 @@ class BaseEventLoop(events.AbstractEventLoop): if blocksize <= 0: return total_sent view = memoryview(buf)[:blocksize] - read = file.readinto(view) + read = await self.run_in_executor(None, file.readinto, view) if not read: return total_sent # EOF await proto.drain() diff --git a/Misc/NEWS.d/next/Library/2019-06-14-13-30-47.bpo-37280.Fxur0F.rst b/Misc/NEWS.d/next/Library/2019-06-14-13-30-47.bpo-37280.Fxur0F.rst new file mode 100644 index 0000000000..7cdc56a72c --- /dev/null +++ b/Misc/NEWS.d/next/Library/2019-06-14-13-30-47.bpo-37280.Fxur0F.rst @@ -0,0 +1 @@ +Use threadpool for reading from file for sendfile fallback mode. -- 2.50.1