pub unsafe extern "C" fn rocksdb_comparator_create( state: *mut c_void, destroy: extern "C" fn(_: *mut c_void), compare: extern "C" fn(arg: *mut c_void, a: *const c_char, alen: size_t, b: *const c_char, blen: size_t) -> c_int, name_fn: extern "C" fn(_: *mut c_void) -> *const c_char) -> DBComparator
