From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id B338846F7E for ; Wed, 25 Oct 2023 13:25:51 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 9965E68CAEF; Wed, 25 Oct 2023 16:25:48 +0300 (EEST) Received: from mail0.khirnov.net (red.khirnov.net [176.97.15.12]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id EBD6068CA93 for ; Wed, 25 Oct 2023 16:25:41 +0300 (EEST) Received: from localhost (localhost [IPv6:::1]) by mail0.khirnov.net (Postfix) with ESMTP id AF4112405ED; Wed, 25 Oct 2023 15:25:41 +0200 (CEST) Received: from mail0.khirnov.net ([IPv6:::1]) by localhost (mail0.khirnov.net [IPv6:::1]) (amavis, port 10024) with ESMTP id 5Fnqw_AFcHxx; Wed, 25 Oct 2023 15:25:41 +0200 (CEST) Received: from lain.khirnov.net (lain.khirnov.net [IPv6:2001:67c:1138:4306::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "lain.khirnov.net", Issuer "smtp.khirnov.net SMTP CA" (verified OK)) by mail0.khirnov.net (Postfix) with ESMTPS id 1B6C7240498; Wed, 25 Oct 2023 15:25:41 +0200 (CEST) Received: by lain.khirnov.net (Postfix, from userid 1000) id 066921601B9; Wed, 25 Oct 2023 15:25:41 +0200 (CEST) From: Anton Khirnov To: FFmpeg development discussions and patches In-Reply-To: References: Mail-Followup-To: FFmpeg development discussions and patches , Andreas Rheinhardt Date: Wed, 25 Oct 2023 15:25:40 +0200 Message-ID: <169824034099.11195.3689927113051682835@lain.khirnov.net> User-Agent: alot/0.8.1 MIME-Version: 1.0 Subject: Re: [FFmpeg-devel] [PATCH 35/42] avcodec/threadprogress: Add new API for frame-threaded progress X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Andreas Rheinhardt Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Quoting Andreas Rheinhardt (2023-09-19 21:57:27) > The API is very similar by the ProgressFrame API, with the exception > that it no longer has an included AVFrame. Instead one can wait > on anything via a ThreadProgress. One just has to ensure that > the lifetime of the object containing the ThreadProgress is long > enough (the corresponding problem for ProgressFrames is solved > by allocating the progress and giving each thread a reference > to it). This will typically be solved by putting a ThreadProgress > in a refcounted structure that is shared between threads. > It will be put to the test in the following commits. > > An alternative to the check for whether the owner exists > (meaning "do we use frame-threading?") would be to initialize > the progress to INT_MAX in case frame threading is not in use. > This would probably be preferable on arches where atomic reads > are cheap (like x86), but are there ones where it is not? > > One could also (guarded by e.g. an ASSERT_LEVEL check) actually > track the progress for non-framethreading, too, in order to > track errors even in single-threaded mode. > > Signed-off-by: Andreas Rheinhardt > --- > libavcodec/pthread_frame.c | 50 +++++++++++++++++++++++++++++++++++++ > libavcodec/threadprogress.h | 37 +++++++++++++++++++++++++++ > 2 files changed, 87 insertions(+) > create mode 100644 libavcodec/threadprogress.h Again, I'd prefer to do without owner. -- Anton Khirnov _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".