{"id":23013,"url":"https://patchwork.libcamera.org/api/covers/23013/?format=json","web_url":"https://patchwork.libcamera.org/cover/23013/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20250325180821.1456154-1-barnabas.pocze@ideasonboard.com>","date":"2025-03-25T18:08:12","name":"[RFC,v3,0/9] libcamera: process: Remove `ProcessManager` singleton","submitter":{"id":216,"url":"https://patchwork.libcamera.org/api/people/216/?format=json","name":"Barnabás Pőcze","email":"barnabas.pocze@ideasonboard.com"},"mbox":"https://patchwork.libcamera.org/cover/23013/mbox/","series":[{"id":5079,"url":"https://patchwork.libcamera.org/api/series/5079/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5079","date":"2025-03-25T18:08:12","name":"libcamera: process: Remove `ProcessManager` singleton","version":3,"mbox":"https://patchwork.libcamera.org/series/5079/mbox/"}],"comments":"https://patchwork.libcamera.org/api/covers/23013/comments/","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 9D3D5C0DA4\n\tfor ;\n\tTue, 25 Mar 2025 18:08:44 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 76D3E68955;\n\tTue, 25 Mar 2025 19:08:43 +0100 (CET)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 71451600EB\n\tfor ;\n\tTue, 25 Mar 2025 19:08:42 +0100 (CET)","from pb-laptop.local (185.221.143.221.nat.pool.zt.hu\n\t[185.221.143.221])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id BB571353\n\tfor ;\n\tTue, 25 Mar 2025 19:06:54 +0100 (CET)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"eRbDRwKM\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1742926015;\n\tbh=X27O+WutmeChIIGp9Pko5lndhtxUQnFRgna62PUaS20=;\n\th=From:To:Subject:Date:From;\n\tb=eRbDRwKMMAR//3cIcW53tSdfmema5y2ssH+jUf/oFl0UEPXS9F7jH9et4+cZykBVh\n\tzR5CWEplpzM9jMWrPiopc8swk7yDztK6SaTnd33r7M354fjxU+UtYyDFDycO3bra4K\n\tDlVA3S/X16INoqtqUwuemwHj7CacJ0//Y3K+u4JM=","From":"=?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= ","To":"libcamera-devel@lists.libcamera.org","Subject":"[RFC PATCH v3 0/9] libcamera: process: Remove `ProcessManager`\n\tsingleton","Date":"Tue, 25 Mar 2025 19:08:12 +0100","Message-ID":"<20250325180821.1456154-1-barnabas.pocze@ideasonboard.com>","X-Mailer":"git-send-email 2.49.0","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"The main goal is to remove the need for the ProcessManager singleton. That\nis achieved by using pidfd + clone3(), which raises the minimum\nkernel version to 5.4. There are also additional misc. changes.\n\nv2: https://patchwork.libcamera.org/patch/22609/\nv1: https://patchwork.libcamera.org/patch/22522/\n\nBarnabás Pőcze (9):\n libcamera: process: Disable copy/move\n libcamera: process: Misc. cleanup around `execv()`\n libcamera: process: Use `pid_` member to decide if running\n libcamera: process: Return error if already running\n libcamera: process: Ensure that file descriptors are nonnegative\n libcamera: process: Use span instead of vector\n libcamera: process: Move `closeAllFdsExcept()`\n libcamera: process: Use `close_range()` when available\n libcamera: process: Remove `ProcessManager` singleton\n\n include/libcamera/internal/camera_manager.h | 1 -\n include/libcamera/internal/process.h | 42 +--\n meson.build | 6 +-\n src/libcamera/ipc_pipe_unixsocket.cpp | 9 +-\n src/libcamera/process.cpp | 303 ++++++--------------\n test/ipc/unixsocket_ipc.cpp | 2 -\n test/log/log_process.cpp | 2 -\n test/process/process_test.cpp | 7 +-\n 8 files changed, 112 insertions(+), 260 deletions(-)\n\n--\n2.49.0"}