From 298023633fde5cd60926a2923a01d896550cbf84 Mon Sep 17 00:00:00 2001 From: "Miss Islington (bot)" <31488909+miss-islington@users.noreply.github.com> Date: Sat, 15 Jun 2019 09:02:57 -0700 Subject: [PATCH] bpo-36785: PEP 574 What's New entry (GH-13931) (cherry picked from commit c879ff247ae1b67a790ff98d2d59145302cd4e4e) Co-authored-by: Antoine Pitrou --- Doc/whatsnew/3.8.rst | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst index 21ad112547..1312a74330 100644 --- a/Doc/whatsnew/3.8.rst +++ b/Doc/whatsnew/3.8.rst @@ -54,7 +54,6 @@ For full details, see the :ref:`changelog `. Some notable items not yet covered here: - * :pep:`574` - Pickle protocol 5 with out-of-band data buffer support * :pep:`578` - Runtime audit hooks for potentially sensitive operations * ``python -m asyncio`` runs a natively async REPL * ... @@ -261,6 +260,23 @@ See :pep:`590` for a full description. (Contributed by Jeroen Demeyer and Mark Shannon in :issue:`36974`.) +Pickle protocol 5 with out-of-band data buffers +----------------------------------------------- + +When :mod:`pickle` is used to transfer large data between Python processes +in order to take advantage of multi-core or multi-machine processing, +it is important to optimize the transfer by reducing memory copies, and +possibly by applying custom techniques such as data-dependent compression. + +The :mod:`pickle` protocol 5 introduces support for out-of-band buffers +where :pep:`3118`-compatible data can be transmitted separately from the +main pickle stream, at the discretion of the communication layer. + +See :pep:`574` for a full description. + +(Contributed by Antoine Pitrou in :issue:`36785`.) + + Other Language Changes ====================== -- 2.50.1