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std::shared_timed_mutex::try_lock_shared_until

STD：：共享[医]定时[医]互斥：：尝试[医]锁[医]共享[医]直到

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

尝试将互斥锁在共享模式下。块，直到指定timeout_time已到达或已获得锁，两者以第一位为准。关于成功锁定获取返回true，否则返回false...

如果timeout_time已传递，此函数的行为如下try_lock_shared()...

钟系在timeout_time使用，这意味着考虑到时钟的调整。因此，块的最大持续时间可能小于或超过timeout_time - Clock::now()在呼叫时，取决于调整的方向。该函数也可能阻塞时间超过之后。timeout_time由于调度或资源争用延迟已到达。

和...一样try_lock_shared()，则允许此函数伪造失败并返回。false即使互斥锁之前没有被任何其他线程锁定。timeout_time...

优先unlock()对同一个互斥体的操作同步性中定义的28名ASstd::memory_order%29如果返回此操作true...

如果try_lock_shared_until由已经拥有mutex在任何模式%28共享或独占%29中，行为都是未定义的。

参数

timeout_time-maximum time point to block until

返回值

true如果已成功获取共享锁所有权，则为false...

例外

任何由时钟、时间引发的异常[医]在执行%28时钟、时间点和标准库提供的持续时间期间，不要抛出%29。

例

另见

try_lock_untiltries to lock the mutex, returns if the mutex has beenunavailable until specified time point has been reached (public member function)
try_lock_sharedtries to lock the mutex for shared ownership, returns if the mutex is not available (public member function)
try_lock_shared_fortries to lock the mutex for shared ownership, returns if the mutex has beenunavailable for the specified timeout duration (public member function)

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