示例代码: #include<iostream>#include<atomic>intmain(){std::atomic<int>value(0);intexpected =5;intnew_value =11;boolresult = value.compare_exchange_strong(expected, new_value);if(result) { std::cout <<"Update successful. New value: "<< value <<"\n"; }else{ std::cout <<"Update ...
std::atomic<int> atomicInt(0); std::atomic<bool> atomicBool(false); std::atomic<double> *atomicString = new std::atomic<double>(3.1415);is_lock_free函数:bool is_lock_free() const volatile noexcept; bool is_lock_free() const noexcept;...
std::atomic<bool> ready (false); 2.2、is_lock_free函数 is_lock_free函数是一个成员函数,用于检查当前atomic对象是否支持无锁操作。调用此成员函数不会启动任何数据竞争。 语法: bool is_lock_free() const volatile noexcept; bool is_lock_free() const noexcept; 返回值:如果当前atomic对象支持无锁操作...
exchange_weak(integral&,integral,memory_order,memory_order)volatile;boolcompare_exchange_weak(integral&...
bool compare_exchange_weak(T &, T, memory_order = memory_order_seq_cst) volatile; bool compare_exchange_weak(T &, T, memory_order = memory_order_seq_cst); bool compare_exchange_strong(T &, T, memory_order = memory_order_seq_cst) volatile; bool compare_exchange_strong(T &, T, mem...
bool compare_exchange_strong(T &, T, memory_order = memory_order_seq_cst);atomic() = default;constexpr atomic(T);atomic(const atomic &) = delete;atomic & operator=(const atomic &) = delete;atomic & operator=(const atomic &) volatile = delete;T operator=(T) volatile;T operator=(T)...
template < class T > struct atomic { bool is_lock_free() const volatile; bool is_lock_free() const; void store(T, memory_order = memory_order_seq_cst) volatile; void store(T, memory_order = memory_order_seq_cst); T load(memory_order = memory_order_seq_cst) const volatile; T ...
std::atomic_intx{0};intexpected_x=0;boolresult1=x.compare_exchange_strong(expected_x,10);std...
std::atomic_intx{0};intexpected_x=0;boolresult1=x.compare_exchange_strong(expected_x,10);std...
考虑使用compare_exchange_strong函数。更多内容：C++原子变量atomic详解 - 知乎 (zhihu.com)...