diff options
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/internal.h | 1 | ||||
| -rw-r--r-- | libavcodec/utils.c | 12 |
2 files changed, 7 insertions, 6 deletions
diff --git a/libavcodec/internal.h b/libavcodec/internal.h index 6deaf1d204..30cb9a0de1 100644 --- a/libavcodec/internal.h +++ b/libavcodec/internal.h @@ -241,6 +241,7 @@ int ff_init_buffer_info(AVCodecContext *s, AVFrame *frame); void ff_color_frame(AVFrame *frame, const int color[4]); +extern volatile int ff_avcodec_locked; int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec); int ff_unlock_avcodec(const AVCodec *codec); diff --git a/libavcodec/utils.c b/libavcodec/utils.c index baf09119fe..873f39f9bd 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -115,7 +115,7 @@ static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL; #endif -static atomic_bool ff_avcodec_locked; +volatile int ff_avcodec_locked; static atomic_int entangled_thread_counter = ATOMIC_VAR_INIT(0); static void *codec_mutex; static void *avformat_mutex; @@ -1943,7 +1943,6 @@ 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 +1958,22 @@ 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_avcodec_locked = 1; ff_unlock_avcodec(codec); return AVERROR(EINVAL); } - av_assert0(atomic_compare_exchange_strong(&ff_avcodec_locked, &exp, 1)); + av_assert0(!ff_avcodec_locked); + ff_avcodec_locked = 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)); + av_assert0(ff_avcodec_locked); + ff_avcodec_locked = 0; atomic_fetch_add(&entangled_thread_counter, -1); if (lockmgr_cb) { if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE)) |