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[79.124.17.100]) by mx.google.com with ESMTP id 38si1782612wrv.191.2017.03.06.11.56.16; Mon, 06 Mar 2017 11:56:17 -0800 (PST) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=gmail.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id E880A688261; Mon, 6 Mar 2017 21:56:01 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-pf0-f195.google.com (mail-pf0-f195.google.com [209.85.192.195]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id A55726809D3 for ; Mon, 6 Mar 2017 21:55:55 +0200 (EET) Received: by mail-pf0-f195.google.com with SMTP id v190so7669748pfb.0 for ; Mon, 06 Mar 2017 11:56:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=hFazvm1M0h86BTqFoFImhKV/81VEGvP+M90cWjWfUyI=; b=hTC2QZBCtp93DEEfCcV3zkTO/T9Tt03yRpZ5zYqYOezg7CQXHqRf/BPRWTc3Wj6kI5 5xMhd2n1rNnUrn1xhr2sCriJKGiuk3JPO4kmohZ0iC5MeNwEb17lSWOXUCxh0e36620P xt7+zM6uygysFuGLWBbYbBBAsAxs2VhX1bD6nIaZ+DGO5skQ0lJo3zTdHRsSb9OkMvAT 6obL51fWUX8iNXoYaOB+Zrekm4gcJw31+ZND24iaWkL/1627NpjXkf1HDnp7KEM7B7M+ CvX8rK/fn5g7Hx235bvNjgZ5q+D6RRO4JjIy7Wvq3q3AaKZE0xlpPDWuAmN/ggP6ngx8 KYCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=hFazvm1M0h86BTqFoFImhKV/81VEGvP+M90cWjWfUyI=; b=oFnnxPxYLcYpCTkRrSboMGMgrNvCROh1+/9+Tc+TBdhgb99USk3LLL+LzFiniiktdJ it81Ln8hvgnPkwLmxJ2n7Mhwx6d/H/sz6Qz2BhaX8U8KbRprEwmUiwM+DjhTOkMz/xN9 j6DDTNCNSZZX8iFdkYweBRd+xyK+wH7c9uA0kYSRrPSJvbDIddWIJgoyziakzagFVBue nzXnGBEtH2LQ4463J+j2qKFNOVCoeNj5Nzgx6ZQW6NjYJMDltfiOU4PNZBMMB1u7dF91 LWj4KL8i1QRBTIdzX9BI+WPzs+aQBZl3CHfK2NHmhqSbAtwj2mMKIZasHl/4va/GPH/V YQjw== X-Gm-Message-State: AMke39k91VGPwVHhZeg58307Czryrr7DIO3jrJwHTsfD0uo/t6JJMBVbWAzVhIH16x4gUQ== X-Received: by 10.98.12.148 with SMTP id 20mr23267312pfm.116.1488829688730; Mon, 06 Mar 2017 11:48:08 -0800 (PST) Received: from localhost.localdomain ([114.120.237.152]) by smtp.gmail.com with ESMTPSA id p4sm41362446pgd.50.2017.03.06.11.48.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 06 Mar 2017 11:48:08 -0800 (PST) From: Muhammad Faiz To: ffmpeg-devel@ffmpeg.org Date: Tue, 7 Mar 2017 02:47:38 +0700 Message-Id: <20170306194739.1870-3-mfcc64@gmail.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170306194739.1870-1-mfcc64@gmail.com> References: <20170306194739.1870-1-mfcc64@gmail.com> Subject: [FFmpeg-devel] [PATCH 3/4] avfilter/allfilters: make avfilter_register_all thread safe X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 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: Muhammad Faiz MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Muhammad Faiz --- libavfilter/allfilters.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 15a74c4..2042b35 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -19,6 +19,8 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include + #include "avfilter.h" #include "config.h" #include "opencl_allkernels.h" @@ -39,11 +41,14 @@ void avfilter_register_all(void) { - static int initialized; + static atomic_int initialized; + static atomic_int ready; - if (initialized) + if (atomic_exchange_explicit(&initialized, 1, memory_order_relaxed)) { + while (!atomic_load_explicit(&ready, memory_order_relaxed)) + ; return; - initialized = 1; + } REGISTER_FILTER(ABENCH, abench, af); REGISTER_FILTER(ACOMPRESSOR, acompressor, af); @@ -379,4 +384,6 @@ void avfilter_register_all(void) REGISTER_FILTER_UNCONDITIONAL(af_afifo); REGISTER_FILTER_UNCONDITIONAL(vf_fifo); ff_opencl_register_filter_kernel_code_all(); + + atomic_store_explicit(&ready, 1, memory_order_relaxed); }