C++ named requirements: TimedLockable (since C++11)
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The TimedLockable requirements describe the characteristics of types that provide timed exclusive blocking semantics for execution agents (threads, processes, tasks).
Requirements
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. |
Notes
The
try_lock_for
and
try_lock_until
member functions obtain a non-shared lock on
m
on success.
Standard library
The following standard library types satisfy TimedLockable :
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(C++11)
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provides mutual exclusion facility which implements locking with a timeout
(class) |
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(C++11)
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provides mutual exclusion facility which can be locked recursively
by the same thread and implements locking with a timeout (class) |
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(C++14)
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provides shared mutual exclusion facility and implements locking with a timeout
(class) |