std::shared_lock<Mutex>:: try_lock_until

template < class Clock, class Duration > bool try_lock_until ( const std:: chrono :: time_point < Clock,Duration > & timeout_time ) ;		(since C++14)

Tries to lock the associated mutex in shared mode. Blocks until specified timeout_time has been reached or the lock is acquired, whichever comes first. On successful lock acquisition returns true , otherwise returns false . May block for longer than until timeout_time has been reached.

Effectively calls mutex ( ) - > try_lock_shared_until ( timeout_time ) .

std::system_error is thrown if there is no associated mutex or if the mutex is already locked.

Clock must meet the Clock requirements. The behavior is undefined if Mutex does not meet the SharedTimedLockable requirements. The program is ill-formed if std:: chrono :: is_clock_v < Clock > is false . (since C++20)

Parameters

timeout_time

-

maximum time point to block until

Return value

true if the ownership of the mutex has been acquired successfully, false otherwise.

Exceptions

• Any exceptions thrown by mutex ( ) - > try_lock_shared_for ( timeout_time ) .

• If there is no associated mutex, std::system_error with an error code of std::errc::operation_not_permitted .

• If the mutex is already locked, std::system_error with an error code of std::errc::resource_deadlock_would_occur .

Example

This section is incomplete Reason: no example

See also

lock	locks the associated mutex (public member function)
try_lock	tries to lock the associated mutex (public member function)
try_lock_for	tries to lock the associated mutex, for the specified duration (public member function)
unlock	unlocks the associated mutex (public member function)
try_lock_until	tries to lock (i.e., takes ownership of) the associated TimedLockable mutex, returns if the mutex has been unavailable until specified time point has been reached (public member function of std::unique_lock<Mutex> )