{"id":15733,"url":"https://patchwork.libcamera.org/api/patches/15733/?format=json","web_url":"https://patchwork.libcamera.org/patch/15733/","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":"<20220427145150.4710-1-ecurtin@redhat.com>","date":"2022-04-27T14:51:50","name":"[libcamera-devel] libcamera: base: Make MutexLocker(Mutex &mutex) non-blocking","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"a9f049c8682ed44fba6e6b214c3957d7608c8bdb","submitter":{"id":101,"url":"https://patchwork.libcamera.org/api/people/101/?format=json","name":"Eric Curtin","email":"ecurtin@redhat.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/15733/mbox/","series":[{"id":3076,"url":"https://patchwork.libcamera.org/api/series/3076/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=3076","date":"2022-04-27T14:51:50","name":"[libcamera-devel] libcamera: base: Make MutexLocker(Mutex &mutex) non-blocking","version":1,"mbox":"https://patchwork.libcamera.org/series/3076/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/15733/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/15733/checks/","tags":{},"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 6F587C3256\n\tfor ;\n\tWed, 27 Apr 2022 14:52:07 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id B765865644;\n\tWed, 27 Apr 2022 16:52:06 +0200 (CEST)","from us-smtp-delivery-124.mimecast.com\n\t(us-smtp-delivery-124.mimecast.com [170.10.129.124])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 03CE46042F\n\tfor ;\n\tWed, 27 Apr 2022 16:52:04 +0200 (CEST)","from mail-wm1-f72.google.com (mail-wm1-f72.google.com\n\t[209.85.128.72]) by relay.mimecast.com with ESMTP with STARTTLS\n\t(version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id\n\tus-mta-357-SfDrhK4sPZKdJLM1-mP9rw-1; 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\n\tWed, 27 Apr 2022 07:52:00 -0700 (PDT)","by 2002:a05:600c:2f0f:b0:393:fbd1:cc94 with SMTP id\n\tr15-20020a05600c2f0f00b00393fbd1cc94mr6761012wmn.162.1651071120310; \n\tWed, 27 Apr 2022 07:52:00 -0700 (PDT)"],"X-Google-Smtp-Source":"ABdhPJz+brjsiqgzmAohThmiXm6RiNEh03urpLOVTdjulSWdqa2jLoDSalylcLyOc4ncBdQNPx+DXg==","To":"libcamera-devel@lists.libcamera.org","Date":"Wed, 27 Apr 2022 15:51:50 +0100","Message-Id":"<20220427145150.4710-1-ecurtin@redhat.com>","X-Mailer":"git-send-email 2.35.1","MIME-Version":"1.0","X-Mimecast-Spam-Score":"0","X-Mimecast-Originator":"redhat.com","Content-Transfer-Encoding":"8bit","Content-Type":"text/plain; charset=\"US-ASCII\"; x-default=true","Subject":"[libcamera-devel] [PATCH] libcamera: base: Make MutexLocker(Mutex\n\t&mutex) non-blocking","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","From":"Eric Curtin via libcamera-devel ","Reply-To":"Eric Curtin ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Camera::acquire claims to be non-blocking, in order to achieve this,\nstd::unique_lock constructor must be called with\ntry_to_lock so it doesn't block if a lock cannot be obtained.\n\nBug: https://bugs.libcamera.org/show_bug.cgi?id=127\nSigned-off-by: Eric Curtin \n---\n include/libcamera/base/mutex.h | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)","diff":"diff --git a/include/libcamera/base/mutex.h b/include/libcamera/base/mutex.h\nindex 2d23e49e..c4a5f791 100644\n--- a/include/libcamera/base/mutex.h\n+++ b/include/libcamera/base/mutex.h\n@@ -45,7 +45,7 @@ class LIBCAMERA_TSA_SCOPED_CAPABILITY MutexLocker final\n {\n public:\n \texplicit MutexLocker(Mutex &mutex) LIBCAMERA_TSA_ACQUIRE(mutex)\n-\t\t: lock_(mutex.mutex_)\n+\t\t: lock_(mutex.mutex_, std::try_to_lock)\n \t{\n \t}\n \n","prefixes":["libcamera-devel"]}