C++ named requirements: BasicLockable (since C++11)

The BasicLockable

Requirements

For type L to be BasicLockable, the following conditions have to be satisfied for an object m of type L

Expression	Preconditions	Effects
m.lock()		Blocks until a lock can be acquired for the current execution agent (thread, process, task). If an exception is thrown, no lock is acquired.
m.unlock()	The current execution agent holds a non-shared lock on m.	Releases the non-shared lock held by the execution agent. Throws no exceptions.

Non-shared locks

A lock on an object is said to be non-shared lock if it is acquired by a call to lock, try_lock, try_lock_for, or try_lock_until member function.

Standard library

The following standard library types satisfy BasicLockable requirements:

mutex (C++11)	provides basic mutual exclusion facility (class)
recursive_mutex (C++11)	provides mutual exclusion facility which can be locked recursively by the same thread (class)
recursive_timed_mutex (C++11)	provides mutual exclusion facility which can be locked recursively by the same thread and implements locking with a timeout (class)
shared_mutex (C++17)	provides shared mutual exclusion facility (class)
shared_timed_mutex (C++14)	provides shared mutual exclusion facility and implements locking with a timeout (class)
timed_mutex (C++11)	provides mutual exclusion facility which implements locking with a timeout (class)

See also

• Thread support library
• Mutex
• Lockable
• TimedLockable