15  * as 2 for dlib multi-thread support.
20 void _Mtxinit(_Rmtx *m)  in _Mtxinit()  argument
24     RT_ASSERT(m != RT_NULL);  in _Mtxinit()
26     mutex = (rt_mutex_t)m;  in _Mtxinit()
30 void _Mtxdst(_Rmtx *m)  in _Mtxdst()  argument
34     RT_ASSERT(m != RT_NULL);  in _Mtxdst()
36     mutex = (rt_mutex_t)m;  in _Mtxdst()
40 void _Mtxlock(_Rmtx *m)  in _Mtxlock()  argument
44     RT_ASSERT(m != RT_NULL);  in _Mtxlock()
46     mutex = (rt_mutex_t)m;  in _Mtxlock()
50 void _Mtxunlock(_Rmtx *m)  in _Mtxunlock()  argument
54     RT_ASSERT(m != RT_NULL);  in _Mtxunlock()
56     mutex = (rt_mutex_t)m;  in _Mtxunlock()