- RECURSIVE mutexes can EAGAIN if depth is exceeded.
- ERRORCHECK mutexes can EDEADLK if relocked or cyclic
- POSIX says mutexes by DEFAULT can be any of the above
- RECURSIVE mutexes can EAGAIN if depth is exceeded.
- ERRORCHECK mutexes can EDEADLK if relocked or cyclic
- POSIX says mutexes by DEFAULT can be any of the above