C++ named requirements: Lockable (since C++11) (original) (raw)
The Lockable requirements extends the BasicLockable requirements to include attempted locking.
[edit] Requirements
For type **L** to be Lockable, it must meet the above condition as well as the following:
| Expression | Effects | Return value |
|---|---|---|
| m.try_lock() | Attempts to acquire the lock for the current execution agent (thread, process, task) without blocking. If an exception is thrown, no lock is obtained. | true if the lock was acquired, false otherwise |
[edit] Notes
The try_lock member functions obtains a non-shared lock on m on success.
[edit] Standard library
The following standard library types satisfy Lockable requirements:
| mutex(C++11) | provides basic mutual exclusion facility (class) [edit] |
|---|---|
| recursive_mutex(C++11) | provides mutual exclusion facility which can be locked recursively by the same thread (class) [edit] |
| recursive_timed_mutex(C++11) | provides mutual exclusion facility which can be locked recursivelyby the same thread and implements locking with a timeout (class) [edit] |
| shared_mutex(C++17) | provides shared mutual exclusion facility (class) [edit] |
| shared_timed_mutex(C++14) | provides shared mutual exclusion facility and implements locking with a timeout (class) [edit] |
| timed_mutex(C++11) | provides mutual exclusion facility which implements locking with a timeout (class) [edit] |