@@ -570,11 +570,12 @@ void ff_thread_report_progress(ThreadFrame *f, int n, int field)
p = f->owner[field]->internal->thread_ctx;
- pthread_mutex_lock(&p->progress_mutex);
if (atomic_load_explicit(&p->debug_threads, memory_order_relaxed))
av_log(f->owner[field], AV_LOG_DEBUG,
"%p finished %d field %d\n", progress, n, field);
+ pthread_mutex_lock(&p->progress_mutex);
+
atomic_store_explicit(&progress[field], n, memory_order_release);
pthread_cond_broadcast(&p->progress_cond);
@@ -592,10 +593,11 @@ void ff_thread_await_progress(ThreadFrame *f, int n, int field)
p = f->owner[field]->internal->thread_ctx;
- pthread_mutex_lock(&p->progress_mutex);
if (atomic_load_explicit(&p->debug_threads, memory_order_relaxed))
av_log(f->owner[field], AV_LOG_DEBUG,
"thread awaiting %d field %d from %p\n", n, field, progress);
+
+ pthread_mutex_lock(&p->progress_mutex);
while (atomic_load_explicit(&progress[field], memory_order_relaxed) < n)
pthread_cond_wait(&p->progress_cond, &p->progress_mutex);
pthread_mutex_unlock(&p->progress_mutex);
The patch does not fix the tsan warning it was intended to fix. Reverting the patch moves the av_log() back to the outside of the lock. Signed-off-by: Wan-Teh Chang <wtc@google.com> --- libavcodec/pthread_frame.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)