[FFmpeg-devel] [PATCH] threadprogress: reorder instructions to silence tsan warning.

From: "Ronald S. Bultje" <rsbultje@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Cc: "Ronald S. Bultje" <rsbultje@gmail.com>
Subject: [FFmpeg-devel] [PATCH] threadprogress: reorder instructions to silence tsan warning.
Date: Thu,  6 Feb 2025 16:42:51 -0500
Message-ID: <20250206214257.37158-1-rsbultje@gmail.com> (raw)

Fixes #11456.
---
 libavcodec/threadprogress.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavcodec/threadprogress.c b/libavcodec/threadprogress.c
index 62c4fd898b..aa72ff80e7 100644
--- a/libavcodec/threadprogress.c
+++ b/libavcodec/threadprogress.c
@@ -55,9 +55,8 @@ void ff_thread_progress_report(ThreadProgress *pro, int n)
     if (atomic_load_explicit(&pro->progress, memory_order_relaxed) >= n)
         return;
 
-    atomic_store_explicit(&pro->progress, n, memory_order_release);
-
     ff_mutex_lock(&pro->progress_mutex);
+    atomic_store_explicit(&pro->progress, n, memory_order_release);
     ff_cond_broadcast(&pro->progress_cond);
     ff_mutex_unlock(&pro->progress_mutex);
 }
-- 
2.48.0

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