Difference between revisions of "cpp/named req/SharedTimedLockable"
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Latest revision as of 12:22, 8 November 2022
The SharedTimedLockable requirements describe the characteristics of types that provide timed shared blocking semantics for execution agents (threads, processes, tasks).
[edit] Requirements
For type L to be SharedTimedLockable, 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 | Requires | Return value |
|---|---|---|
| m.try_lock_shared_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_shared_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_shared_for and try_lock_shared_until member functions obtain a shared lock on m on succcess.
