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...
若timeout_duration小于或等于timeout_duration.zero(),则函数表现同try_lock()。 由于调度或资源争议延迟,此函数可能阻塞长于timeout_duration。 同try_lock(),允许此函数虚假地失败并返回false,即使在timeout_duration中某点互斥不为任何线程所锁定。
timed_mutex::try_lock_for timed_mutex::try_lock_until timed_mutex::unlock Native handle timed_mutex::native_handlevoid lock(); (since C++11) Locks the mutex. If another thread has already locked the mutex, a call to lock will block execution until the lock is acquired. ...
timed_mutex::lock timed_mutex::try_lock timed_mutex::try_lock_for timed_mutex::try_lock_until timed_mutex::unlock Native handle timed_mutex::native_handlenative_handle_type native_handle(); (since C++11) (not always present) Returns the underlying implementation-defined native handle object. ...
但是,要想学会使用 std::lock_guard 和 std::unique_lock ,必须先了解基本的 std::mutex。 头文件: #include <mutex> 在头文件当中提供了四种互斥量: std::mutex 与 std::timed_mutex 先从最基本的 std::mutex 入手,其余互斥量皆是其变种。需要了解4个公共方法: ...
The timed_mutex class is a synchronization primitive that can be used to protect shared data from being simultaneously accessed by multiple threads. In a manner similar to mutex, timed_mutex offers exclusive, non-recursive ownership semantics. In addition, timed_mutex provides the ability to attem...
--- CPP Reference void ChangeValueAdopt(BrainBox& skylake, BrainBox& coffeelake) { std::lock(skylake.c_mutex, coffeelake.c_mutex); std::unique_lock<std::mutex> locker1(skylake.c_mutex, std::adopt_lock); std::unique_lock<std::mutex> locker2(coffeelake.c_mutex, std::adopt_lock); ...
API Reference Document std::timed_mutex::timed_mutexC++ Thread support library std::timed_mutex timed_mutex(); (1) (since C++11) timed_mutex( const timed_mutex& ) = delete; (2) (since C++11) 1) Constructs the mutex. The mutex is in unlocked state after the call....
(2)lock和unlock的数量必须相等:看起来std::recursive_mutex很不错,但是使用的时候也需要多注意,否则会出错。 (3)性能的问题,std::recursive_mutex的性能会比较差一些,可用接口autobegin =std::chrono::system_clock::now();测试。 ——> > > std::time_mutex和std::recursive_timed_mutex:这两种互斥量类型...
std::mutex:最基本的mutex类。 std::recursive_mutex:递归mutex类,能多次锁定而不死锁。 std::time_mutex:定时mutex类,可以锁定一定的时间。 std::recursive_timed_mutex:定时递归mutex类。 ——> > > std::mutex:std::mutex是C++中最基本的互斥量,提供了独占所有权的特性,std::mutex提供了以下成员函数: ...