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Showing content from https://en.cppreference.com/w/cpp/language/../named_req/BasicLockable.html below:

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

The BasicLockable requirements describe the minimal characteristics of types that provide exclusive blocking semantics for execution agents (i.e. threads).

[edit] 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.

[edit]

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.

[edit] Standard library

The following standard library types satisfy BasicLockable requirements:

provides basic mutual exclusion facility
(class) [edit] provides mutual exclusion facility which can be locked recursively by the same thread
(class) [edit] provides mutual exclusion facility which can be locked recursively
by the same thread and implements locking with a timeout
(class) [edit] provides shared mutual exclusion facility
(class) [edit] provides shared mutual exclusion facility and implements locking with a timeout
(class) [edit] provides mutual exclusion facility which implements locking with a timeout
(class) [edit] [edit] See also

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