cppreference.com 创建账户 页面 讨论 变换 查看 编辑 历史 std::timed_mutex C++ 并发支持库 std::timed_mutex 在标头<mutex>定义 classtimed_mutex; (C++11 起) timed_mutex类是一种同步原语,能用于保护数据免受多个线程同时访问。 以类似mutex的行为,timed_mutex提供独占非递归所有权语义。另外,timed_mutex通...
zero(),那么函数表现同 try_lock()。 由于调度或资源争议延迟,此函数可能阻塞长于 timeout_duration。 标准推荐用 std::steady_clock 度量时长。如果实现用 std::system_clock 代替,那么等待时间可能会对时钟调整敏感。 与try_lock() 相同,此函数可以虚假失败并返回 false,即使在 timeout_duration 中的某...
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classtimed_mutex; (since C++11) Thetimed_mutexclass is a synchronization primitive that can be used to protect shared data from being simultaneously accessed by multiple threads. In a manner similar tomutex,timed_mutexoffers exclusive, non-recursive ownership semantics. In addition,timed_mutexprovides...
timed_mutex(consttimed_mutex&)=delete; (2)(since C++11) 1)Constructs the mutex. The mutex is in unlocked state after the call. 2)Copy constructor is deleted. Parameters (none) Exceptions std::system_errorif the construction is unsuccessful. ...
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timed_mutex::try_lock_for - C++ Referencewww.cplusplus.com/reference/mutex/timed_mutex/try_lock_for/ main.cpp // timed_mutex::try_lock_for example#include<iostream> // std::cout#include<chrono> // std::chrono::milliseconds#include<thread> // std::thread#include<mutex> // std::ti...
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若lock 为已占有 mutex 的线程调用,则行为未定义:例如,程序可能死锁。鼓励能检测非法使用的实现抛出以 resource_deadlock_would_occur 为错误条件的 std::system_error ,而不是死锁。 同一互斥上先前的 unlock() 操作同步于(定义于 std::memory_order )此操作。