std::atomic<int> a(0); // 创建并初始化a为0 在英语口语交流中,我们通常会这样描述std::atomic的构造函数:“Thestd::atomicclass provides a default constructor for creating an atomic object without initialization. It also provides a cons
initialization (2) constexpr atomic (T val) noexcept; copy [deleted] (3) atomic (const atomic&) = delete; 默认构造函数,由默认构造函数创建的 std::atomic 对象处于未初始化(uninitialized)状态,对处于未初始化(uninitialized)状态 std::atomic对象可以由 atomic_init 函数进行初始化。 初始化构造函数,由...
std::atomic 是模板类，⼀个模板类型为 T 的原⼦对象中封装了⼀个类型为 T 的值。template <class T> struct atomic;原⼦类型对象的主要特点就是从不同线程访问不会导致数据竞争(data race)。因此从不同线程访问某个原⼦对象是良性 (well-defined) ⾏为，⽽通常对于⾮原⼦类型⽽⾔，并发...
问std::atomic的默认值是多少？EN一、背景介绍： 函数指针始终不太灵活，它只能指向全局或静态函数，...
此功能是为了与C兼容而提供的。如果不需要兼容性,std::atomic可以通过它们的非默认构造函数初始化。 例 另见 ATOMIC_VAR_INIT (C++11) constant initialization of an atomic variable of static storage duration (function macro) (constructor) constructs an atomic object (public member function of std::atomic...
ATOMIC_VAR_INIT (C++11)(deprecated in C++20) constant initialization of an atomic variable of static storage duration (function macro) (constructor) constructs an atomic object (public member function ofstd::atomic<T>) C documentationforatomic_init...
Original: initialization syntax. The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. Member-Funktionen (constructor) konstruiert eine atomare Objekt Original: constructs an atomic object The text has been mach...
3)Initializes the underlyingshared_ptr<T>to a copy ofdesired. As with anystd::atomictype, initialization is not an atomic operation. 4)Atomic types are not copy/move constructible. atomic<shared_ptr<T>>::operator= voidoperator=(constatomic&)=delete; ...
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initialization (2) constexpr atomic (T val) noexcept; copy [deleted] (3) atomic (const atomic&) = delete; 默认构造函数,由默认构造函数创建的 std::atomic 对象处于未初始化(uninitialized)状态,对处于未初始化(uninitialized)状态 std::atomic对象可以由 atomic_init 函数进行初始化。 初始化构造函数,由...