On 11/25/2017 3:07 PM, Clément Bœsch wrote:
> On Sat, Nov 25, 2017 at 05:01:56PM +0000, Rostislav Pehlivanov wrote:
> [...]
>> -volatile int ff_avcodec_locked;
>> +static atomic_bool ff_avcodec_locked;
>> static atomic_int entangled_thread_counter = ATOMIC_VAR_INIT(0);
>> static void *codec_mutex;
>> static void *avformat_mutex;
>> @@ -1937,6 +1937,7 @@ int av_lockmgr_register(int (*cb)(void **mutex, enum
>> AVLockOp op))
>>
>> int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
>> {
>
>> + _Bool exp = 1;
>
> why _Bool instead of atomic_bool?
See http://en.cppreference.com/w/c/atomic/atomic_compare_exchange
The variable passed as argument for *expected needs to be of the
non-atomic type of the variable passed for *obj.
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