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 successful 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 program 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 duration of the block might be more or less 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 until after timeout_time has been reached due to process scheduling or resource contention delays. As with try_lock_shared(), this function is allowed to fail spuriously 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 defined in std::memory_order) this operation if it returns true. If try_lock_shared_until is called by a thread that already owns the mu- tex 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, otherwise false. Exceptions Any exception thrown by clock, time_point, or duration during the execu- tion (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, re- turns if the try_lock_shared mutex is not available (public member function) tries to lock the mutex for shared ownership, re- turns if the try_lock_shared_for mutex has been unavailable for the specified timeout duration (public member function) Category: * Todo no example http://cppreference.com 2024.06.10 std::shared...hared_until(3)
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