atomic::load : 读取包含的值 // atomic::load/store example#include<iostream> // std::cout#include<atomic> // std::atomic, std::memory_order_relaxed#include<thread> // std::threadstd::atomic<int>foo(0);// std::atomic<int> foo1(foo); // error// std::atomic<int> foo1(foo.load...
atomic_char/ std::atomic<char> atomic_schar/ std::atomic<signed char> atomic_uchar/ std::atomic<unsigned char> atomic_int/ std::atomic<int> atomic_uint/ std::atomic<unsigned> atomic_short/ std::atomic<short> atomic_ushort/ std::atomic<unsigned short> atomic_long/ std::atomic<long> ato...
std::atomic_char std::atomic<char> std::atomic_schar std::atomic<signed char> std::atomic_uchar std::atomic<unsigned char> std::atomic_short std::atomic<short> std::atomic_ushort std::atomic<unsigned short> std::atomic_int std::atomic<int> std::atomic_uint std::atomic<unsign...
#include <atomic> int main(int argc,char**argv) { std::atomic<int> x(10); std::cout << std::boolalpha << "std::atomic<int> is_lock_free ?\n" << x.is_lock_free() << std::endl; return 0; }输出:std::atomic<int> is_lock_free ? trueload...
std::atomic_bool std::atomic<bool> std::atomic_char std::atomic<char> std::atomic_schar std::atomic<signed char> std::atomic_uchar std::atomic<unsigned char> std::atomic_short std::atomic<short> std::atomic_ushort std::atomic<unsigned short> std::atomic_int std::atomic<int...
atomic_flag类型 atomic_flag是一种简单的原子布尔类型, 只支持两种操作:test_and_set和clear.结合std:...
那么这时候，cpp的atomic实际上等于什么都没做。当然了，经常的，仅仅一条甚至七八条指令的原子性也是不...
atomic,本意为原子,官方 (我不确定是不是官方,反正继续解释就对了) 对其的解释是 原子操作是最小的且不可并行化的操作。 这就意味着即使是多线程,也要像同步进行一样同步操作atomic对象,从而省去了mutex上锁、解锁的时间消耗。 std::atomic常用成员函数 ...
对std::shared_ptr和std::weak_ptr的部分特化std::atomic>和std::atomic>。 对于整型类型的特化: 当与以下整型类型之一实例化时,std::atomic提供适用于整型类型的额外 原子操作,如fetch_add,fetch_sub,fetch_and,fetch_or,fetch_xor: 字符类型char,char8_t(自 C++20 起),char16_t,char32_t和wchar_t; ...
atomic & operator=(const atomic &) volatile = delete;T operator=(T) volatile;T operator=(T);};另外，C++11 标准库 std::atomic 提供了针对整形(integral)和指针类型的特化实现，分别定义如下：针对整形(integal)的特化，其中 integal 代表了如下类型char, signed char, unsigned char, short, unsigned ...