[FFmpeg-devel] [PATCH] lavc/utils: remove unnecessary locking

[Rostislav Pehlivanov]

Its already done by lockmgr.

Signed-off-by: Rostislav Pehlivanov <atomnuker at gmail.com>
---
 libavcodec/utils.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index baf09119fe..796d24dcbb 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -115,7 +115,6 @@ static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
 #endif
 
 
-static atomic_bool ff_avcodec_locked;
 static atomic_int entangled_thread_counter = ATOMIC_VAR_INIT(0);
 static void *codec_mutex;
 static void *avformat_mutex;
@@ -1943,7 +1942,6 @@ int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
 
 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
 {
-    _Bool exp = 0;
     if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
         return 0;
 
@@ -1959,21 +1957,17 @@ int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
                atomic_load(&entangled_thread_counter));
         if (!lockmgr_cb)
             av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
-        atomic_store(&ff_avcodec_locked, 1);
         ff_unlock_avcodec(codec);
         return AVERROR(EINVAL);
     }
-    av_assert0(atomic_compare_exchange_strong(&ff_avcodec_locked, &exp, 1));
     return 0;
 }
 
 int ff_unlock_avcodec(const AVCodec *codec)
 {
-    _Bool exp = 1;
     if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
         return 0;
 
-    av_assert0(atomic_compare_exchange_strong(&ff_avcodec_locked, &exp, 0));
     atomic_fetch_add(&entangled_thread_counter, -1);
     if (lockmgr_cb) {
         if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE))
-- 
2.15.1.424.g9478a66081