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{ "id": 15015, "url": "https://patchwork.libcamera.org/api/patches/15015/?format=api", "web_url": "https://patchwork.libcamera.org/patch/15015/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20211203164619.1541033-3-hiroh@chromium.org>", "date": "2021-12-03T16:46:14", "name": "[libcamera-devel,2/7] libcamera: base: thread: Protect exitCode by mutex in exit()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "4b6e5151b237637fecb5d516e5724bdb6b518c8b", "submitter": { "id": 63, "url": "https://patchwork.libcamera.org/api/people/63/?format=api", "name": "Hirokazu Honda", "email": "hiroh@chromium.org" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/15015/mbox/", "series": [ { "id": 2812, "url": "https://patchwork.libcamera.org/api/series/2812/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=2812", "date": "2021-12-03T16:46:12", "name": "Apply clang thread safety annotation libcamera-core and v4l2", "version": 1, "mbox": "https://patchwork.libcamera.org/series/2812/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/15015/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/15015/checks/", "tags": {}, "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "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 51614BF415\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri, 3 Dec 2021 16:46:33 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id A38B660839;\n\tFri, 3 Dec 2021 17:46:32 +0100 (CET)", "from mail-pl1-x635.google.com (mail-pl1-x635.google.com\n\t[IPv6:2607:f8b0:4864:20::635])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 4BD3760822\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 3 Dec 2021 17:46:30 +0100 (CET)", "by mail-pl1-x635.google.com with SMTP id y8so2520197plg.1\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 03 Dec 2021 08:46:30 -0800 (PST)", "from hiroh2.tok.corp.google.com\n\t([2401:fa00:8f:203:cd78:3a5f:d792:6177])\n\tby smtp.gmail.com with ESMTPSA id\n\th18sm4123149pfh.172.2021.12.03.08.46.26\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tFri, 03 Dec 2021 08:46:27 -0800 (PST)" ], "Authentication-Results": "lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=chromium.org header.i=@chromium.org\n\theader.b=\"btAo1BcM\"; 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\n\tFri, 03 Dec 2021 08:46:28 -0800 (PST)", "From": "Hirokazu Honda <hiroh@chromium.org>", "To": "libcamera-devel@lists.libcamera.org", "Date": "Sat, 4 Dec 2021 01:46:14 +0900", "Message-Id": "<20211203164619.1541033-3-hiroh@chromium.org>", "X-Mailer": "git-send-email 2.34.0.384.gca35af8252-goog", "In-Reply-To": "<20211203164619.1541033-1-hiroh@chromium.org>", "References": "<20211203164619.1541033-1-hiroh@chromium.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Subject": "[libcamera-devel] [PATCH 2/7] libcamera: base: thread: Protect\n\texitCode by mutex in exit()", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "This fixes the bug that Thread::exit() accesses data_->exitCode\nwithout acquiring a lock.\n\nSigned-off-by: Hirokazu Honda <hiroh@chromium.org>\n---\n src/libcamera/base/thread.cpp | 4 +++-\n 1 file changed, 3 insertions(+), 1 deletion(-)", "diff": "diff --git a/src/libcamera/base/thread.cpp b/src/libcamera/base/thread.cpp\nindex 6bda9d14..abd33a83 100644\n--- a/src/libcamera/base/thread.cpp\n+++ b/src/libcamera/base/thread.cpp\n@@ -390,9 +390,11 @@ void Thread::finishThread()\n *\n * \\context This function is \\threadsafe.\n */\n-void Thread::exit(int code)\n+void Thread::exitint code)\n {\n+\tdata_->mutex_.lock();\n \tdata_->exitCode_ = code;\n+\tdata_->mutex_.unlock();\n \tdata_->exit_.store(true, std::memory_order_release);\n \n \tEventDispatcher *dispatcher = data_->dispatcher_.load(std::memory_order_relaxed);\n", "prefixes": [ "libcamera-devel", "2/7" ] }