: Cannot implement with language itself. Need compiler support. Used C++ N STL
: Partially implemented with C++ N
: Fully implemented with C++ N
: Not yet implemented
| Features | Standard | Implemented in |
|---|---|---|
| Classes | ||
| mutex |  |
 |
| timed_mutex | |
|
| recursive_mutex | |
|
| recursive_timed_mutex | |
|
| lock_guard | |
|
| unique_lock | |
|
| scoped_lock |  |
|
| defer_lock_t try_to_lock_t adopt_lock_t |
|
|
| once_flag | |
|
| Constants | ||
| defer_lock try_to_lock adopt_lock |
|
|
| Functions | ||
| try_lock | |
|
| lock | |
|
| call_once | |
|
| ss::swap(ss::unique_lock) | |
|