std::shared_timed_mutex::try_lock_shared_for
template< class Rep, class Period > bool try_lock_shared_for( const std::chrono::duration<Rep,Period>& timeout_duration ); | | (since C++14) |
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尝试将互斥锁在共享模式下。块,直到指定timeout_duration已过或已获得共享锁,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_duration小于或等于timeout_duration.zero(),该函数的行为类似于try_lock_shared()...
用一个稳定的时钟来测量持续时间。此函数的阻塞时间可能超过timeout_duration由于调度或资源争用延迟。
和...一样try_lock_shared(),则允许此函数伪造失败并返回。false期间,即使互斥锁没有被任何其他线程锁定。timeout_duration...
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_for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_duration | - | maximum duration to block for |
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返回值
true如果成功获取锁,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_shared | tries to lock the mutex for shared ownership, returns if the mutex is not available (public member function) |
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try_lock_shared_until | tries to lock the mutex for shared ownership, returns if the mutex has beenunavailable until specified time point has been reached (public member function) |
try_lock_for | tries to lock the mutex, returns if the mutex has beenunavailable for the specified timeout duration (public member function) |
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