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std::shared_lock::try_lock_until

STD：：共享[医]锁：：试一试[医]锁[医]直到

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

尝试将关联的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.可能会阻塞更长的时间直到timeout_time已经联系到了。

有效呼叫mutex()->try_lock_shared_until(timeout_time)...

std::system_error如果没有关联的互斥对象，或者互斥对象已经锁定，则引发。

参数

timeout_time-maximum time point to block until

返回值

true如果互斥体的所有权已经成功获得，false否则。

例外

  • 引发的任何异常mutex()->try_lock_shared_for(timeout_time)

  • 如果没有关联的互斥，std::system_error错误代码为std::errc::operation_not_permitted

  • 如果互斥锁已经锁定，std::system_error错误代码为std::errc::resource_deadlock_would_occur

例

另见

locklocks the associated mutex (public member function)
try_locktries to lock the associated mutex (public member function)
try_lock_fortries to lock the associated mutex, for the specified duration (public member function)
unlockunlocks the associated mutex (public member function)
try_lock_untiltries to lock 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)

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