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

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

The TimedLockable requirements describe the characteristics of types that provide timed exclusive blocking semantics for execution agents (threads, processes, tasks).

[edit] Requirements

Lockable

For type L to be TimedLockable, given

rel_time, a value of a specialization of std::chrono::duration, and
abs_time, a value of a specialization of std::chrono::time_point,

the following conditions have to be satisfied for an object m of type L:

Expression Effects Return value m.try_lock_for(rel_time) Blocks for the provided duration rel_time or until a lock on m is acquired. true if the lock was acquired, false otherwise. m.try_lock_until(abs_time) Blocks until the provided time point abs_time is reached or a lock on m is acquired. true if the lock was acquired, false otherwise. [edit] Notes

The try_lock_for and try_lock_until member functions obtain a non-shared lock on m on success.

[edit] Standard library

The following standard library types satisfy TimedLockable:

provides mutual exclusion facility which implements locking with a timeout
(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 and implements locking with a timeout
(class) [edit] [edit] See also

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