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std::shared...hared_until(3) C++ Standard Libary std::shared...hared_until(3) NAME std::shared_timed_mutex::try_lock_shared_until - std::shared_timed_mu- tex::try_lock_shared_until Synopsis template< class Clock, class Duration > bool try_lock_shared_until( const (since C++14) std::chrono::time_point<Clock,Duration>& timeout_time ); Tries to lock the mutex in shared mode. Blocks until specified time- out_time has been reached or the lock is acquired, whichever comes first. On success- ful lock acquisition returns true, otherwise returns false. If timeout_time has already passed, this function behaves like try_lock_shared(). Clock must meet the Clock requirements. The programs is ill-formed if std::chrono::is_clock_v<Clock> is false (since C++20). The standard recommends that the clock tied to timeout_time be used, in which case adjustments of the clock may be taken into account. Thus, the dura- tion of the block might, but might not, be less or more than timeout_time - Clock::now() at the time of the call, depending on the direction of the adjustment and whether it is honored by the implementation. The function also may block for longer than until after timeout_time has been reached due to scheduling or resource con- tention delays. As with try_lock_shared(), this function is allowed to fail spuri- ously and return false even if the mutex was not locked by any other thread at some point before timeout_time. Prior unlock() operation on the same mutex synchronizes-with (as de- fined in std::memory_order) this operation if it returns true. If try_lock_shared_until is called by a thread that already owns the mutex in any mode (shared or exclusive), the behavior is undefined. Parameters timeout_time - maximum time point to block until Return value true if the shared lock ownership was acquired successfully, other- wise false. Exceptions Any exception thrown by clock, time_point, or duration during the execution (clocks, time points, and durations provided by the standard library never throw) Example This section is incomplete Reason: no example See also tries to lock the mutex, returns if the mutex has been try_lock_until unavailable until specified time point has been reached (public member function) tries to lock the mutex for shared ownership, returns if the try_lock_shared mutex is not available (public member function) tries to lock the mutex for shared ownership, returns if the try_lock_shared_for mutex has been unavailable for the specified timeout duration (public member function) http://cppreference.com 2022.07.31 std::shared...hared_until(3)
NAME | Synopsis | Parameters | Return value | Exceptions | Example | See also
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