哋它亢++ named requirements: SharedTimedLockable (since 哋它亢++14)
From cppreference.com
The SharedTimedLockable requirements describe the characteristics of types that provide timed shared blocking semantics for execution agents (threads, processes, tasks).
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. |
Notes
The try_lock_shared_for and try_lock_shared_until member functions obtain a shared lock on m on succcess.