std::shared_mutex::try_lock_shared
bool try_lock_shared(); | ? | (since C++17) |
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尝试将互斥锁在共享模式下。马上回来。关于成功锁定获取返回true，否则返回false...
此函数允许伪造失败并返回。false即使互斥锁不被任何其他线程单独锁定。
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...
如果调用线程已经在任何模式下拥有互斥对象，则该行为是未定义的。
参数
%280%29
返回值
true如果成功获取锁，则为false...
例外
%280%29
例
另见
lock | locks the mutex, blocks if the mutex is not available (public member function) |
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try_lock_shared | tries to lock the mutex for shared ownership, returns if the mutex is not available (public member function) |
unlock_shared | unlocks the mutex (shared ownership) (public member function) |
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