From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 1B9432A925 for ; Mon, 13 May 2019 18:11:32 -0400 (EDT) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing.freelists.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id d5xoO5GTQ2pi for ; Mon, 13 May 2019 18:11:32 -0400 (EDT) Received: from smtp51.i.mail.ru (smtp51.i.mail.ru [94.100.177.111]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTPS id CBCCF2A82B for ; Mon, 13 May 2019 18:11:31 -0400 (EDT) Date: Tue, 14 May 2019 01:11:29 +0300 From: Konstantin Osipov Subject: [tarantool-patches] Re: [PATCH v2 small 1/1] small: introduce static allocator Message-ID: <20190513221129.GA11045@atlas> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: tarantool-patches-bounce@freelists.org Errors-to: tarantool-patches-bounce@freelists.org Reply-To: tarantool-patches@freelists.org List-Help: List-Unsubscribe: List-software: Ecartis version 1.0.0 List-Id: tarantool-patches List-Subscribe: List-Owner: List-post: List-Archive: To: Vladislav Shpilevoy Cc: tarantool-patches@freelists.org * Vladislav Shpilevoy [19/05/14 00:58]: OK to push. > Currently Tarantool has a global thread local array of 4 static > buffers, each 1028 bytes. It provides an API tt_static_buf() > allowing to return them one by one in a cycle. But sometimes it > is needed to obtain a bit bigger buffer, or on the contrary - > many smaller buffers. For example, to store a UDP packet - > ~1.5Kb, or a small array of integers, probably not fitting into > 1028 bytes. > > This patch introduces a cyclic allocator having static thread > local buffer with fixed size 4096 * 3 bytes, and provides an API > to slice it by any smaller sizes. When the buffer is done, it is > recycled. > > This allocator will allow to drop tt_static buffers and lots of > other static thread local buffers scattered over Tarantool source > code. > --- > Branch: https://github.com/tarantool/small/tree/gerold103/static-allocator -- Konstantin Osipov, Moscow, Russia, +7 903 626 22 32